test(core): simplify process layer wiring

Co-authored-by: Aiden Cline <aidenpcline@gmail.com>

.github/CODEOWNERS

@@ -1,5 +1,3 @@
 # web + desktop packages
-packages/app/      @adamdotdevin
-packages/tauri/    @adamdotdevin
-packages/desktop/src-tauri/  @brendonovich
-packages/desktop/  @adamdotdevin
+packages/app/      @Hona @Brendonovich
+packages/desktop/  @Hona @Brendonovich

.github/workflows/nix-hashes.yml

@@ -56,14 +56,24 @@ jobs:
           BUILD_LOG=$(mktemp)
           trap 'rm -f "$BUILD_LOG"' EXIT
 
-          # Build with fakeHash to trigger hash mismatch and reveal correct hash
-          nix build ".#packages.${SYSTEM}.node_modules_updater" --no-link 2>&1 | tee "$BUILD_LOG" || true
+          HASH=""
+          MAX_ATTEMPTS=3
+          for ((ATTEMPT = 1; ATTEMPT <= MAX_ATTEMPTS; ATTEMPT++)); do
+            # Build with fakeHash to trigger hash mismatch and reveal correct hash
+            nix build ".#packages.${SYSTEM}.node_modules_updater" --no-link 2>&1 | tee "$BUILD_LOG" || true
 
-          # Extract hash from build log with portability
-          HASH="$(nix run --inputs-from . nixpkgs#gnugrep -- -oP 'got:\s*\Ksha256-[A-Za-z0-9+/=]+' "$BUILD_LOG" | tail -n1 || true)"
+            HASH="$(nix run --inputs-from . nixpkgs#gnugrep -- -oP 'got:\s*\Ksha256-[A-Za-z0-9+/=]+' "$BUILD_LOG" | tail -n1 || true)"
+
+            [ -n "$HASH" ] && break
+
+            if [ "$ATTEMPT" -lt "$MAX_ATTEMPTS" ]; then
+              echo "::warning::Attempt ${ATTEMPT}/${MAX_ATTEMPTS} produced no hash for ${SYSTEM}; retrying in $((ATTEMPT * 10))s"
+              sleep $((ATTEMPT * 10))
+            fi
+          done
 
           if [ -z "$HASH" ]; then
-            echo "::error::Failed to compute hash for ${SYSTEM}"
+            echo "::error::Failed to compute hash for ${SYSTEM} after ${MAX_ATTEMPTS} attempts"
             cat "$BUILD_LOG"
             exit 1
           fi

.github/workflows/publish.yml

@@ -90,6 +90,7 @@ jobs:
         id: build
         run: |
           ./packages/opencode/script/build.ts ${{ (github.ref_name == 'beta' && '--sourcemaps') || '' }}
+          ./packages/cli/script/build.ts ${{ (github.ref_name == 'beta' && '--sourcemaps') || '' }}
         env:
           OPENCODE_VERSION: ${{ needs.version.outputs.version }}
           OPENCODE_RELEASE: ${{ needs.version.outputs.release }}
@@ -107,6 +108,12 @@ jobs:
         with:
           name: opencode-cli-windows
           path: packages/opencode/dist/opencode-windows*
+
+      - uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
+        with:
+          name: opencode-preview-cli
+          path: packages/cli/dist/cli-*
+
     outputs:
       version: ${{ needs.version.outputs.version }}
 
@@ -327,9 +334,9 @@ jobs:
           VITE_SENTRY_ENVIRONMENT: ${{ (github.ref_name == 'beta' && 'beta') || 'production' }}
           VITE_SENTRY_RELEASE: desktop@${{ needs.version.outputs.version }}
 
-      - name: Package and publish
+      - name: Package
         if: needs.version.outputs.release
-        run: npx electron-builder ${{ matrix.settings.platform_flag }} --publish always --config electron-builder.config.ts
+        run: npx electron-builder ${{ matrix.settings.platform_flag }} --publish never --config electron-builder.config.ts
         working-directory: packages/desktop
         timeout-minutes: 60
         env:
@@ -349,11 +356,9 @@ jobs:
         env:
           OPENCODE_CHANNEL: ${{ (github.ref_name == 'beta' && 'beta') || 'prod' }}
 
-      - name: Create and upload macOS .app.tar.gz
+      - name: Create macOS .app.tar.gz
         if: runner.os == 'macOS' && needs.version.outputs.release
         working-directory: packages/desktop/dist
-        env:
-          GH_TOKEN: ${{ steps.committer.outputs.token }}
         run: |
           if [[ "${{ matrix.settings.target }}" == "x86_64-apple-darwin" ]]; then
             APP_DIR="mac"
@@ -371,7 +376,6 @@ jobs:
             exit 1
           fi
           tar -czf "$OUT_NAME" -C "$(dirname "$APP_PATH")" "$(basename "$APP_PATH")"
-          gh release upload "v${{ needs.version.outputs.version }}" "$OUT_NAME" --clobber --repo "${{ needs.version.outputs.repo }}"
 
       - name: Verify signed Windows Electron artifacts
         if: runner.os == 'Windows'
@@ -446,12 +450,24 @@ jobs:
           name: opencode-cli-signed-windows
           path: packages/opencode/dist
 
+      - uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4.3.0
+        with:
+          name: opencode-preview-cli
+          path: packages/cli/dist
+
       - uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4.3.0
         if: needs.version.outputs.release
         with:
           pattern: latest-yml-*
           path: /tmp/latest-yml
 
+      - uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4.3.0
+        if: needs.version.outputs.release
+        with:
+          pattern: opencode-desktop-*
+          path: /tmp/desktop
+          merge-multiple: true
+
       - name: Setup git committer
         id: committer
         uses: ./.github/actions/setup-git-committer
@@ -478,6 +494,19 @@ jobs:
           git config --global user.name "opencode"
           ssh-keyscan -H aur.archlinux.org >> ~/.ssh/known_hosts || true
 
+      - name: Upload desktop release assets
+        if: needs.version.outputs.release
+        env:
+          GH_TOKEN: ${{ steps.committer.outputs.token }}
+        run: |
+          shopt -s nullglob
+          files=(/tmp/desktop/*.{exe,blockmap,dmg,zip,AppImage,deb,rpm} /tmp/desktop/*.app.tar.gz)
+          if (( ${#files[@]} == 0 )); then
+            echo "No desktop release assets found"
+            exit 1
+          fi
+          gh release upload "v${{ needs.version.outputs.version }}" "${files[@]}" --clobber --repo "${{ needs.version.outputs.repo }}"
+
       - run: ./script/publish.ts
         env:
           OPENCODE_VERSION: ${{ needs.version.outputs.version }}

.github/workflows/sync-zed-extension.yml

@@ -1,35 +0,0 @@
-name: "sync-zed-extension"
-
-on:
-  workflow_dispatch:
-  release:
-    types: [published]
-
-jobs:
-  zed:
-    name: Release Zed Extension
-    runs-on: blacksmith-4vcpu-ubuntu-2404
-    steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
-        with:
-          fetch-depth: 0
-
-      - uses: ./.github/actions/setup-bun
-
-      - name: Get version tag
-        id: get_tag
-        run: |
-          if [ "${{ github.event_name }}" = "release" ]; then
-            TAG="${{ github.event.release.tag_name }}"
-          else
-            TAG=$(git tag --list 'v[0-9]*.*' --sort=-version:refname | head -n 1)
-          fi
-          echo "tag=${TAG}" >> $GITHUB_OUTPUT
-          echo "Using tag: ${TAG}"
-
-      - name: Sync Zed extension
-        run: |
-          ./script/sync-zed.ts ${{ steps.get_tag.outputs.tag }}
-        env:
-          ZED_EXTENSIONS_PAT: ${{ secrets.ZED_EXTENSIONS_PAT }}
-          ZED_PR_PAT: ${{ secrets.ZED_PR_PAT }}

.github/workflows/test.yml

@@ -64,7 +64,8 @@ jobs:
             turbo-${{ runner.os }}-
 
       - name: Run unit tests
-        run: bun turbo test:ci
+        timeout-minutes: 20
+        run: bun turbo test --output-logs=errors-only --log-order=grouped --log-prefix=task
         env:
           OPENCODE_EXPERIMENTAL_DISABLE_FILEWATCHER: ${{ runner.os == 'Windows' && 'true' || 'false' }}
 
@@ -73,26 +74,6 @@ jobs:
         working-directory: packages/opencode
         run: bun run test:httpapi
 
-      - name: Publish unit reports
-        if: always()
-        uses: mikepenz/action-junit-report@bccf2e31636835cf0874589931c4116687171386 # v6.4.0
-        with:
-          report_paths: packages/*/.artifacts/unit/junit.xml
-          check_name: "unit results (${{ matrix.settings.name }})"
-          detailed_summary: true
-          include_time_in_summary: true
-          fail_on_failure: false
-
-      - name: Upload unit artifacts
-        if: always()
-        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
-        with:
-          name: unit-${{ matrix.settings.name }}-${{ github.run_attempt }}
-          include-hidden-files: true
-          if-no-files-found: ignore
-          retention-days: 7
-          path: packages/*/.artifacts/unit/junit.xml
-
   e2e:
     name: e2e (${{ matrix.settings.name }})
     strategy:
@@ -150,7 +131,6 @@ jobs:
         run: bun --cwd packages/app test:e2e:local
         env:
           CI: true
-          PLAYWRIGHT_JUNIT_OUTPUT: e2e/junit-${{ matrix.settings.name }}.xml
         timeout-minutes: 30
 
       - name: Upload Playwright artifacts
@@ -161,6 +141,5 @@ jobs:
           if-no-files-found: ignore
           retention-days: 7
           path: |
-            packages/app/e2e/junit-*.xml
             packages/app/e2e/test-results
             packages/app/e2e/playwright-report

.gitignore

@@ -15,6 +15,8 @@ ts-dist
 .turbo
 **/.serena
 .serena/
+**/.omo
+.omo/
 /result
 refs
 Session.vim

.opencode/agent/triage.md

@@ -1,7 +1,7 @@
 ---
 mode: primary
 hidden: true
-model: opencode/gpt-5.4-nano
+model: opencode/gpt-5.4-mini
 color: "#44BA81"
 tools:
   "*": false

.opencode/command/translate.md

@@ -1,6 +1,6 @@
 ---
 description: translate English to other languages
-model: opencode/claude-opus-4-7
+model: opencode/claude-opus-4-8
 ---
 
 run git diff and translate changed english doc and UI copy files to other international languages. Translate all languages in parallel to save time.

.opencode/opencode.jsonc

@@ -2,8 +2,15 @@
   "$schema": "https://opencode.ai/config.json",
   "provider": {},
   "permission": {},
-  "reference": {
-    "effect": "github.com/Effect-TS/effect-smol",
+  "references": {
+    "effect": {
+      "repository": "github.com/Effect-TS/effect-smol",
+      "description": "Use for Effect v4 and effect-smol implementation details",
+    },
+    "opencode-local": {
+      "path": "~/.local/share/opencode",
+      "description": "Contains opencode logs and data",
+    },
   },
   "mcp": {},
   "tools": {

AGENTS.md

@@ -2,6 +2,12 @@
 - The default branch in this repo is `dev`.
 - Local `main` ref may not exist; use `dev` or `origin/dev` for diffs.
 
+## Branch Names
+
+Use a short branch name of at most three words, separated by hyphens. Do not use slashes or type prefixes such as `feat/` or `fix/`.
+
+Examples: `session-recovery`, `fix-scroll-state`, `regenerate-sdk`.
+
 ## Commits and PR Titles
 
 Use conventional commit-style messages and PR titles: `type(scope): summary`.
@@ -138,3 +144,15 @@ const table = sqliteTable("session", {
 ## Type Checking
 
 - Always run `bun typecheck` from package directories (e.g., `packages/opencode`), never `tsc` directly.
+
+## V2 Session Core
+
+- Keep durable prompt admission separate from model execution. `SessionV2.prompt(...)` admits one durable `session_input` row before scheduling advisory `SessionExecution.wake(sessionID)` unless `resume: false` requests admit-only behavior. The serialized runner promotes admitted inputs into visible user messages at safe boundaries.
+- Reusing a Session ID adopts the existing Session. Reusing a prompt message ID reconciles an exact retry only when Session, prompt, and delivery mode match; conflicting reuse fails. Historical projected prompts lazily synthesize promoted inbox records during exact retry.
+- Keep `SessionExecution` process-global and Session-ID based. Its local implementation owns the process-local Session coordinator and discovers placement through `SessionStore` plus `LocationServiceMap.get(session.location)` only when a drain starts; no layer should take a Session ID. V2 interruption targets the active process-local ownership chain for that Session; idle or missing interruption is a no-op.
+- Keep `SessionRunner`, model resolution, tool registry, permissions, and filesystem Location-scoped. Omitted `Location.workspaceID` means implicit-local placement; explicit workspace identity remains reserved for future placement semantics.
+- Preserve one explicit `llm.stream(request)` call per provider turn and reload projected history before durable continuation. Do not bridge through legacy `SessionPrompt.loop(...)` or delegate orchestration to an in-memory tool loop.
+- Keep local Session drains process-local until clustering is implemented. `SessionRunCoordinator` joins explicit same-Session resumes, coalesces prompt wakeups, and allows different Sessions to run concurrently. Advisory wakes drain eligible durable inbox rows only; post-crash activity recovery requires a separate explicit design before it may retry provider work.
+- Keep delivery vocabulary explicit. Prompts steer by default and coalesce into the active activity at the next safe provider-turn boundary. Explicit `queue` inputs open FIFO future activities one at a time after the active activity settles.
+- Keep EventV2 replay owner claims separate from clustered Session execution ownership.
+- Keep the System Context algebra, registry, and built-ins in `src/system-context`; keep Context Source producers with their observed domains, and keep Session History selection plus Context Epoch persistence Session-owned.

CONTEXT.md

@@ -0,0 +1,129 @@
+# OpenCode Session Runtime
+
+OpenCode sessions preserve durable conversational history while assembling the runtime context an agent needs to act correctly in its current environment.
+
+## Language
+
+**System Context**:
+The structured collection of contextual facts presented to the model as initial instructions and chronological updates.
+_Avoid_: System prompt
+
+**Session History**:
+The projected chronological conversation selected for a provider turn after applying the active compaction and **Context Epoch** cutoffs.
+_Avoid_: Session Context
+
+**Context Source**:
+One independently observed typed value within the **System Context**, represented by a stable key, JSON codec, infallible loader, pure baseline/update renderers, and an optional removal renderer for dynamic sources.
+_Avoid_: Prompt fragment
+
+**System Context Registry**:
+The Location-scoped registry of ordered, scoped producers that contribute to the current **System Context**.
+
+**Mid-Conversation System Message**:
+A durable chronological instruction that tells the model the newly effective state of a changed **Context Source**.
+_Avoid_: System update, system notification, raw text diff
+
+**Context Epoch**:
+The span during which one effective agent's initially rendered **System Context** remains immutable, ending at compaction or another baseline-replacing transition.
+
+**Baseline System Context**:
+The full **System Context** rendered at the start of a **Context Epoch**.
+_Avoid_: Live system prompt
+
+**Context Snapshot**:
+The overwriteable model-hidden JSON state used to compare each **Context Source** with the value last admitted to a provider turn.
+
+**Unavailable Context**:
+An expected temporary inability to observe a **Context Source** value; the runtime retains its prior effective state and emits no update, or omits it until first successfully loaded.
+
+**Safe Provider-Turn Boundary**:
+The point immediately before a provider call, after durable input promotion and any required tool settlement, where context changes may be admitted chronologically.
+
+**Model Tool Output**:
+The bounded projection of a Core-executed tool result persisted in Session history and replayed to the model. A tool may shape this projection semantically, but the Tool Registry enforces the final size limit.
+
+**Managed Tool Output File**:
+A temporary file created under OpenCode's shared tool-output directory to retain complete output that was too large for Session history.
+
+**Model Request Options**:
+Provider-semantic model settings selected from the Catalog and active Session variant before the LLM protocol adapter encodes them for a provider request.
+_Avoid_: Request body, wire options
+
+**Generation Controls**:
+Provider-neutral sampling and output controls, partitioned from provider semantics and compatibility wire fields when model metadata enters the Catalog.
+
+**PTY Environment**:
+The host-supplied environment overlay applied by the server when creating a PTY, observed for the request Location and resolved PTY working directory.
+
+## Relationships
+
+- A **System Context** is an opaque carrier composed from zero or more **Context Sources**.
+- **Session History** contains projected conversational messages and admitted **Mid-Conversation System Messages**; the active **Baseline System Context** remains separate provider-request state.
+- The **System Context Registry** uses stable-keyed scoped contributions to assemble the current **System Context**; contributor removal naturally removes its sources at the next **Safe Provider-Turn Boundary**.
+- A changed **Context Source** may produce one **Mid-Conversation System Message** containing its newly effective state.
+- A **Mid-Conversation System Message** persists the exact combined rendered text sent to the model.
+- The current **Context Snapshot** advances atomically with the corresponding durable **Mid-Conversation System Message**.
+- A **Context Snapshot** stores one codec-encoded JSON value and, for removable dynamic sources, a pre-rendered removal message per stable **Context Source** key.
+- Changes from multiple **Context Sources** admitted at one safe boundary combine into one **Mid-Conversation System Message**.
+- Context changes are sampled and admitted lazily at a **Safe Provider-Turn Boundary**, never pushed asynchronously when their source changes.
+- At a **Safe Provider-Turn Boundary**, newly promoted user input or settled tool results precede any combined **Mid-Conversation System Message**.
+- The first provider turn renders the latest complete **Baseline System Context** and initializes its **Context Snapshot** without emitting a redundant **Mid-Conversation System Message**; unavailable initial context blocks the turn instead of persisting an incomplete baseline.
+- Initial **System Context** preparation precedes the first durable input promotion so an unavailable baseline leaves that input pending and retryable; ordinary reconciliation remains after promotion.
+- Compaction starts a new **Context Epoch** with a freshly rendered **Baseline System Context** and **Context Snapshot**; prior **Mid-Conversation System Messages** remain durable audit history but leave projected model history.
+- A newly registered core or plugin-defined **Context Source** absent from the current snapshot emits its baseline rendering once at the next **Safe Provider-Turn Boundary**.
+- **Context Source** keys are stable and namespaced; duplicate keys fail composition. `SystemContext.combine(...)` preserves caller order; the **System Context Registry** evaluates producers concurrently and combines them in stable contribution-key order so rendered context remains deterministic.
+- Each **Context Source** loader returns one coherent typed value. `SystemContext.make(...)` hides that value type so differently typed sources compose uniformly. Its codec compares and stores that value; its pure renderers produce model-visible baseline, update, and removal text only when needed.
+- `SystemContext.initialize(...)` observes a composed **System Context** once and produces a fresh **Baseline System Context** with its **Context Snapshot**.
+- `SystemContext.reconcile(...)` observes a composed **System Context** once and returns exactly one next action: unchanged, updated, replacement ready, or replacement blocked.
+- `SystemContext.replace(...)` represents an explicit baseline-replacing transition such as compaction or model/provider switch; it either produces a fresh generation or reports that replacement is blocked by unavailable admitted context.
+- Context Epoch preparation retries until stable after optimistic revision mismatches so concurrent replacement requests cannot terminate an otherwise valid safe-boundary run.
+- **Unavailable Context** uses stale-while-revalidate semantics and is distinct from a successfully loaded absence, which may emit removal text.
+- Ordinary **Context Source** loaders return values directly; loaders that intentionally use stale-while-revalidate may explicitly return **Unavailable Context**.
+- Nested project instruction discovery after successful reads remains a follow-up; when implemented, discovered instructions must be admitted durably at the next **Safe Provider-Turn Boundary**.
+- Location-scoped services naturally re-resolve effective context when a moved session next runs in its destination location.
+- Moving a Session clears its active **Context Epoch**, so the destination must initialize a complete baseline before another prompt can promote.
+- Context Epoch initialization is fenced against the authoritative Session Location, so an old-Location runner cannot recreate source context after a concurrent move.
+- Instruction discovery, source identity, persistence, and file loading belong to the instruction service; the **System Context** abstraction only composes effectful producers and renders loaded values.
+- The first instruction-service slice observes global and upward project `AGENTS.md` files as one ordered aggregate **Context Source** at each **Safe Provider-Turn Boundary**.
+- Built-in and instruction context producers register through the **System Context Registry** with stable contribution keys. Plugin-defined context registration and hot-reload lifecycle remain a follow-up built on the same scoped registry seam.
+- Selected-agent available-skill guidance is a **Context Source** composed with Location-wide registry sources immediately before Context Epoch admission. It lists only names and descriptions permitted for that agent; skill bodies and locations are exposed only through the permission-checked `skill` tool.
+- Switching the selected agent requests **Context Epoch** replacement. A switch admitted after the current **Safe Provider-Turn Boundary** applies to the next provider turn while leaving the already-prepared baseline durable. Epoch creation is fenced against the authoritative effective agent, and retries re-observe the current agent.
+- A cross-agent replacement must complete before another provider turn; unavailable admitted context blocks that replacement instead of exposing the previous agent's privileged baseline.
+- Local tool authorization and pending permission requests retain the effective agent of the provider turn that issued the call; a later agent switch cannot change that call's policy.
+- Context source changes never wake idle sessions; the next naturally scheduled **Safe Provider-Turn Boundary** loads and compares current values lazily.
+- Once admitted, a **Mid-Conversation System Message** remains durable even if the following provider attempt fails and is replayed unchanged on retry.
+- **Mid-Conversation System Messages** remain durable Session-message history; normal user-facing transcript surfaces may hide them.
+- The date **Context Source** initially preserves host-local calendar-date behavior; a configured user timezone may replace that default later.
+- A **Context Epoch** begins with one immutable **Baseline System Context**.
+- A **Context Epoch** durably records the effective agent that owns its **Baseline System Context**.
+- A **Baseline System Context** is stored durably and reused verbatim across process restarts within its **Context Epoch**.
+- A **Baseline System Context** durably preserves the exact joined text used for the active provider-cache prefix.
+- Compaction or a model/provider switch starts a new **Context Epoch** because the baseline can be replaced without preserving the prior provider cache.
+- A model/provider switch always starts a new **Context Epoch** while preserving chronological conversation history.
+- **Model Request Options** remain provider-semantic through Catalog resolution. The Session runner maps them into the LLM package's provider-option namespace; the selected protocol adapter alone owns provider wire encoding.
+- **Generation Controls**, protocol-semantic **Model Request Options**, and compatibility request body fields are separate Catalog domains. A shared ingestion adapter partitions legacy and models.dev AI-SDK-shaped options before routing.
+- The **PTY Environment** is a server concern rather than a Core PTY concern. PTY creation merges caller values, then the host overlay, then Core-forced terminal invariants such as `TERM` and `OPENCODE_TERMINAL`.
+- A **PTY Environment** adapter observes plugins in the request Location while passing the resolved PTY working directory to the hook; standalone servers use an empty adapter.
+- A **Mid-Conversation System Message** lowers to the provider's native chronological instruction role when supported and to a wrapped chronological fallback otherwise.
+- When the effective aggregate instruction set changes, its **Mid-Conversation System Message** includes the complete current ordered set and supersedes the prior aggregate value; when no ambient instructions remain, the message states that previously loaded instructions no longer apply.
+- Ambient project instruction discovery honors `OPENCODE_DISABLE_PROJECT_CONFIG`; global instructions remain eligible.
+- Oversized textual **Model Tool Output** retains a bounded preview in Session history while its complete text moves to managed tool-output storage. Arbitrary structured-result size is a separate concern.
+- One tool settlement receives one aggregate textual limit, using the configured maximum lines or UTF-8 bytes, whichever is reached first. The limit is provider-independent; token pressure belongs to context assembly and compaction.
+- Generic truncation preserves the beginning and end of textual output. Tools may apply a more meaningful strategy before the Tool Registry enforces the final limit.
+- A truncated **Model Tool Output** identifies its complete text both in the bounded model-visible preview and as a typed managed output path. Managed output paths do not modify the tool's validated structured result.
+- A **Managed Tool Output File** is temporary and may expire after its retention period. The bounded **Model Tool Output**, not the file, is the durable replayable record.
+- Failure to retain a **Managed Tool Output File** does not change a successful tool operation into a failed one. The Session records an explicitly lossy bounded output without a path, while operators receive diagnostics for the storage failure.
+- Once a tool operation succeeds, bounding its **Model Tool Output** and publishing its one durable settlement form an interruption-safe completion region. Raw oversized success is never published before a later correction.
+- When a structured-only result would exceed the **Model Tool Output** limit, its validated structured value remains unchanged for Session consumers while model replay uses a bounded textual JSON preview and optional managed output path.
+- Existing tool-managed output paths survive generic bounding. A fallback file retains exactly the complete projected text received by the Tool Registry and never claims to reconstruct output already discarded by tool-specific shaping.
+- **Managed Tool Output Files** use globally unique names in one shared flat directory. Their absolute paths are readable and searchable by ordinary tools; other absolute paths remain outside Location-scoped filesystem authority.
+- Provider-executed tool results remain provider-native transcript facts outside generic Tool Registry bounding. Their context control requires provider-aware pruning or compaction because some providers require exact structured round-trip payloads.
+
+## Example dialogue
+
+> **Dev:** "The date changed while the session was active. Should the **Mid-Conversation System Message** say what the old date was?"
+> **Domain expert:** "No. Emit the newly effective date so the agent can act on the current **System Context**."
+
+## Flagged ambiguities
+
+- Legacy `experimental.chat.system.transform` can mutate the assembled baseline system prompt arbitrarily, but V2 plugins do not yet expose an equivalent hook. Decide separately whether to port it, replace dynamic uses with plugin-defined **Context Sources**, or narrow its semantics.

bunfig.toml

@@ -2,7 +2,7 @@
 exact = true
 # Only install newly resolved package versions published at least 3 days ago.
 minimumReleaseAge = 259200
-minimumReleaseAgeExcludes = ["@opentui/core", "@opentui/core-darwin-arm64", "@opentui/core-darwin-x64", "@opentui/core-linux-arm64", "@opentui/core-linux-x64", "@opentui/core-win32-arm64", "@opentui/core-win32-x64", "@opentui/keymap", "@opentui/solid", "gitlab-ai-provider"]
+minimumReleaseAgeExcludes = ["@ai-sdk/amazon-bedrock", "@ai-sdk/anthropic", "@opentui/core", "@opentui/core-darwin-arm64", "@opentui/core-darwin-x64", "@opentui/core-linux-arm64", "@opentui/core-linux-arm64-musl", "@opentui/core-linux-x64", "@opentui/core-linux-x64-musl", "@opentui/core-win32-arm64", "@opentui/core-win32-x64", "@opentui/keymap", "@opentui/solid", "opentui-spinner", "gitlab-ai-provider", "opencode-gitlab-auth", "@ff-labs/fff-node", "@ff-labs/fff-bun", "@ff-labs/fff-bin-darwin-arm64", "@ff-labs/fff-bin-darwin-x64", "@ff-labs/fff-bin-linux-arm64-gnu", "@ff-labs/fff-bin-linux-arm64-musl", "@ff-labs/fff-bin-linux-x64-gnu", "@ff-labs/fff-bin-linux-x64-musl", "@ff-labs/fff-bin-win32-arm64", "@ff-labs/fff-bin-win32-x64", "@pierre/diffs", "@pierre/theming", "app-builder-lib", "dmg-builder", "electron-builder", "electron-publish"]
 
 [test]
 root = "./do-not-run-tests-from-root"

infra/stats.ts

@@ -165,7 +165,7 @@ export const app = new sst.cloudflare.x.SolidStart("Stats", {
   domain: `stats.${domain}`,
   link: [database, EMAILOCTOPUS_API_KEY],
   environment: {
-    PUBLIC_URL: `https://stats.${domain}/stats`,
+    PUBLIC_URL: `https://${domain}/data`,
   },
 })
 

nix/hashes.json

@@ -1,8 +1,8 @@
 {
   "nodeModules": {
-    "x86_64-linux": "sha256-fzplLKjzYefVCRhAgfCWWIa3me2JiI2d9kDBACnz4fA=",
-    "aarch64-linux": "sha256-gccipj2CAau/lZ7KTQhdeU8n6fcXDuUt4X4XbNufCko=",
-    "aarch64-darwin": "sha256-r0QEetxKUf6HrtMOozyvb4jjEJjVtp+DE8aiKKhRrVI=",
-    "x86_64-darwin": "sha256-bU+5WudkiIflFgoqgLSf30iqeNNLuEbScI5oMFPu9eM="
+    "x86_64-linux": "sha256-LOxTad/iCquvJyonFOcz6/rDTPNDmwyBnykhWZJ5GC4=",
+    "aarch64-linux": "sha256-iO+0vYhp+2x6ACmh5lQJ/2Ac4uZTqRZE/KhG3u0o6D8=",
+    "aarch64-darwin": "sha256-tpBydRbrJ+4QxmkGUt/BhME8q6ysCW/CXrsNshYgqDU=",
+    "x86_64-darwin": "sha256-QQcI6SK7WJ7dSkX6xZuSQPoUdwfoCaimVgoHCnrO0wY="
   }
 }

package.json

@@ -15,7 +15,7 @@
     "lint": "oxlint",
     "typecheck": "bun turbo typecheck",
     "upgrade-opentui": "bun run script/upgrade-opentui.ts",
-    "postinstall": "bun run --cwd packages/opencode fix-node-pty",
+    "postinstall": "bun run --cwd packages/core fix-node-pty",
     "prepare": "husky",
     "random": "echo 'Random script'",
     "sso": "aws sso login --sso-session=opencode --no-browser",
@@ -37,10 +37,13 @@
       "@types/bun": "1.3.13",
       "@types/cross-spawn": "6.0.6",
       "@octokit/rest": "22.0.0",
+      "@hono/standard-validator": "0.2.0",
       "@hono/zod-validator": "0.4.2",
-      "@opentui/core": "0.3.1",
-      "@opentui/keymap": "0.3.1",
-      "@opentui/solid": "0.3.1",
+      "@opentui/core": "0.3.4",
+      "@opentui/keymap": "0.3.4",
+      "@opentui/solid": "0.3.4",
+      "@tanstack/solid-virtual": "3.13.28",
+      "@shikijs/stream": "4.2.0",
       "ulid": "3.0.1",
       "@kobalte/core": "0.13.11",
       "@types/luxon": "3.7.1",
@@ -50,8 +53,8 @@
       "@tsconfig/bun": "1.0.9",
       "@cloudflare/workers-types": "4.20251008.0",
       "@openauthjs/openauth": "0.0.0-20250322224806",
-      "@pierre/diffs": "1.1.0-beta.18",
-      "opentui-spinner": "0.0.6",
+      "@pierre/diffs": "1.2.10",
+      "opentui-spinner": "0.0.7",
       "@solid-primitives/storage": "4.3.3",
       "@tailwindcss/vite": "4.1.11",
       "diff": "8.0.2",
@@ -75,10 +78,9 @@
       "zod": "4.1.8",
       "remeda": "2.26.0",
       "sst": "4.13.1",
-      "shiki": "3.20.0",
+      "shiki": "4.2.0",
       "solid-list": "0.3.0",
       "tailwindcss": "4.1.11",
-      "virtua": "0.49.1",
       "vite": "7.1.4",
       "@solidjs/meta": "0.29.4",
       "@solidjs/router": "0.15.4",
@@ -139,14 +141,18 @@
     "@types/node": "catalog:"
   },
   "patchedDependencies": {
-    "@npmcli/agent@4.0.0": "patches/@npmcli%2Fagent@4.0.0.patch",
+    "@ff-labs/fff-bun@0.9.3": "patches/@ff-labs%2Ffff-bun@0.9.3.patch",
+    "@npmcli/agent@4.0.2": "patches/@npmcli%2Fagent@4.0.2.patch",
     "@silvia-odwyer/photon-node@0.3.4": "patches/@silvia-odwyer%2Fphoton-node@0.3.4.patch",
     "@standard-community/standard-openapi@0.2.9": "patches/@standard-community%2Fstandard-openapi@0.2.9.patch",
     "solid-js@1.9.10": "patches/solid-js@1.9.10.patch",
-    "virtua@0.49.1": "patches/virtua@0.49.1.patch",
     "@ai-sdk/xai@3.0.82": "patches/@ai-sdk%2Fxai@3.0.82.patch",
     "gcp-metadata@8.1.2": "patches/gcp-metadata@8.1.2.patch",
     "pacote@21.5.0": "patches/pacote@21.5.0.patch",
-    "@ai-sdk/google@3.0.73": "patches/@ai-sdk%2Fgoogle@3.0.73.patch"
+    "@ai-sdk/google@3.0.73": "patches/@ai-sdk%2Fgoogle@3.0.73.patch",
+    "@tanstack/solid-virtual@3.13.28": "patches/@tanstack%2Fsolid-virtual@3.13.28.patch",
+    "@pierre/trees@1.0.0-beta.4": "patches/@pierre%2Ftrees@1.0.0-beta.4.patch",
+    "@modelcontextprotocol/sdk@1.29.0": "patches/@modelcontextprotocol%2Fsdk@1.29.0.patch",
+    "@tanstack/virtual-core@3.17.0": "patches/@tanstack%2Fvirtual-core@3.17.0.patch"
   }
 }

packages/app/AGENTS.md

@@ -1,3 +1,8 @@
+## Priorities
+
+- Prioritise, in this order: stability, simplicity, performance.
+- Before changing session or timeline code, record a production benchmark baseline and compare it after the change.
+
 ## Debugging
 
 - NEVER try to restart the app, or the server process, EVER.

packages/app/e2e/performance/AGENTS.md

@@ -0,0 +1,13 @@
+- Prioritize stability, then simplicity, then measurement overhead.
+- Use Playwright for scenario control, isolation, and completion checks.
+- Use Chrome Performance traces for generic browser profiling.
+- Use Electron `contentTracing` for packaged multi-process profiling.
+- Keep custom probes only for product-specific measurements.
+- Do not duplicate measurements across the harness, probes, and traces.
+- Run benchmarks serially to avoid cross-test contention.
+- Run benchmarks against production builds.
+- Keep detailed profiling opt-in when it changes workload behavior.
+- Preserve raw diagnostic data or use lossless representations.
+- Do not enforce machine-dependent performance thresholds.
+- Assert scenario completion and metric collection only.
+- Keep normal test discovery free of manual benchmarks.

packages/app/e2e/performance/README.md

@@ -0,0 +1,77 @@
+# Manual app performance suite
+
+The app's high-volume performance diagnostics live under `packages/app/e2e/performance` and are excluded from normal local and CI Playwright discovery. The benchmark config builds the app and serves the production bundle before running scenarios serially.
+
+Run the suite explicitly from `packages/app`:
+
+```sh
+bun run test:bench
+```
+
+PowerShell:
+
+```powershell
+$env:PLAYWRIGHT_WORKERS = "1"
+bun run test:bench
+```
+
+The suite contains:
+
+- cold and hot session-tab timing
+- cached session repaint and mutation tracing
+- streaming timeline throughput, RAF-gap, long-task, geometry, and remount diagnostics
+
+All benchmarks import the shared `benchmark` fixture. Pages created through Playwright's `page` fixture automatically capture main-frame navigation history and emit a Chrome trace when `OPENCODE_PERFORMANCE_TRACE_DIR` is set. Benchmarks that need isolated browser contexts use `withBenchmarkPage`, which owns the context and the same diagnostics lifecycle.
+
+New benchmarks should look like normal Playwright tests:
+
+```ts
+import { benchmark, expect } from "../benchmark"
+
+benchmark("measures one interaction", async ({ page, report }) => {
+  // Only scenario-specific setup and interaction belong here.
+  report({ durationMs: 42 })
+})
+```
+
+The fixture requires every benchmark to call `report()`, automatically names and closes traces, captures navigation history, attaches that history when a test fails, and emits metrics as a consistent `BENCHMARK` JSON line.
+
+```text
+BENCHMARK {"name":"...","context":{"project":"chromium","platform":"darwin"},"metrics":{...}}
+```
+
+Every observed page also emits `BENCHMARK_PAGE` with the same run ID, navigation history, and optional trace path before the final status-bearing `BENCHMARK` record. Chrome traces are browser-wide page-lifetime diagnostics; scenario metrics use narrower explicitly named observation windows.
+
+This follows the stack's own guidance: [Electron recommends repeated Chrome DevTools and Chrome Tracing measurement](https://www.electronjs.org/docs/latest/tutorial/performance), [Chrome DevTools recommends Performance recordings for runtime work](https://developer.chrome.com/docs/devtools/performance), and [Playwright uses traces for test debugging rather than renderer profiling](https://playwright.dev/docs/trace-viewer).
+
+These Playwright benchmarks profile the shared app renderer in Chromium. A future packaged Electron benchmark that needs main-process and multi-process attribution should use Electron's official [`contentTracing`](https://www.electronjs.org/docs/latest/api/content-tracing/) API rather than extending this renderer harness with bespoke process instrumentation.
+
+CPU and high-volume visual profiling are disabled by default. Set `TIMELINE_CPU_PROFILE=1` to enable both, or additionally set `TIMELINE_VISUAL_PROFILE=0` for CPU-only profiling.
+
+The streaming scenario's 30x CPU throttle is a deterministic stress profile, not a simulated end-user device.
+
+Benchmarks do not assert machine-dependent performance budgets. Streaming processes 160 deltas by default and reports renderer-observed completion time, throughput, RAF callback-gap distributions, frame-budget equivalents, and long tasks through final geometry settlement. Delta count and delivery batch are included in result context when overridden. These are main-thread callback diagnostics, not compositor presentation or dropped-frame measurements. Visual-only and geometry metrics are `null` when their probes are disabled. Tab metrics describe sampled DOM observations. Assertions verify scenario and metric collection completion. Repeated repaint states are run-length grouped, but every original observation timestamp is retained alongside raw mutation batches and layout shifts.
+
+Committed smoke and regression tests continue to own correctness coverage for pagination, tab paint, context resize, collapse state, and composer spacing.
+
+## Chrome traces
+
+Set `OPENCODE_PERFORMANCE_TRACE_DIR` to emit a standard Chrome DevTools trace for every benchmark page automatically:
+
+```sh
+OPENCODE_PERFORMANCE_TRACE_DIR=/tmp/opencode-performance-traces \
+bunx playwright test --config e2e/performance/playwright.config.ts \
+  timeline/session-tab-switch-benchmark.spec.ts
+```
+
+The emitted JSON is a standard Chrome trace and can be loaded directly into the Chrome DevTools Performance panel. `devtools-tracing` can optionally inspect it from the command line without adding package scripts or dependencies:
+
+Trace capture mirrors [Puppeteer's official tracing defaults and lifecycle](https://pptr.dev/api/puppeteer.tracing), using Chrome's `ReturnAsStream` transfer mode and failing when Chromium reports trace data loss.
+
+```sh
+bunx devtools-tracing stats <trace-path-from-BENCHMARK_PAGE>
+```
+
+INP analysis requires a trace with a supported navigation/interaction insight. Selector statistics require a trace captured with `OPENCODE_PERFORMANCE_SELECTOR_TRACE=1`.
+
+`e2e/performance/playwright.uncapped.config.ts` disables Chromium frame-rate limiting for explicit uncapped diagnostics. Native product benchmarks should use the default Playwright configuration.

packages/app/e2e/performance/benchmark.ts

@@ -0,0 +1,144 @@
+import { expect, test as base, type Browser, type Page, type TestInfo } from "@playwright/test"
+import { startChromeTrace } from "./chrome-trace"
+
+type BenchmarkFixtures = {
+  report: (metrics: Record<string, unknown>, context?: Record<string, unknown>) => void
+  reportState: { payload?: { metrics: Record<string, unknown>; context: Record<string, unknown> } }
+  benchmarkResult: void
+}
+
+export type PerformancePageDiagnostics = {
+  navigations: string[]
+  stop: () => Promise<string | undefined>
+}
+
+const pages = new WeakMap<Page, PerformancePageDiagnostics>()
+
+export const benchmark = base.extend<BenchmarkFixtures>({
+  reportState: async ({}, use) => use({}),
+  report: async ({ reportState }, use) => {
+    await use((metrics, context = {}) => {
+      if (reportState.payload) throw new Error("Benchmark reported metrics more than once")
+      reportState.payload = { metrics, context }
+    })
+  },
+  benchmarkResult: [
+    async ({ reportState }, use, testInfo) => {
+      await use()
+      const missing = !reportState.payload
+      console.log(
+        `BENCHMARK ${JSON.stringify({
+          schemaVersion: 2,
+          runID: process.env.OPENCODE_PERFORMANCE_RUN_ID,
+          name: benchmarkName(testInfo),
+          status: missing ? "failed" : testInfo.status,
+          expectedStatus: testInfo.expectedStatus,
+          retry: testInfo.retry,
+          repeatEachIndex: testInfo.repeatEachIndex,
+          context: {
+            project: testInfo.project.name,
+            platform: process.platform,
+            ...reportState.payload?.context,
+          },
+          metrics: reportState.payload?.metrics ?? null,
+          error: missing ? "Benchmark did not report metrics" : undefined,
+        })}`,
+      )
+      if (missing && testInfo.status === testInfo.expectedStatus)
+        throw new Error(`Benchmark did not report metrics: ${benchmarkName(testInfo)}`)
+    },
+    { auto: true },
+  ],
+  page: async ({ page }, use, testInfo) => {
+    const name = benchmarkName(testInfo)
+    const diagnostics = await observePerformancePage(page, name)
+    try {
+      await use(page)
+    } finally {
+      try {
+        await reportPerformancePage(name, diagnostics, testInfo)
+      } finally {
+        if (testInfo.status !== testInfo.expectedStatus) {
+          await testInfo.attach("performance-navigations", {
+            body: JSON.stringify(diagnostics.navigations, null, 2),
+            contentType: "application/json",
+          })
+        }
+      }
+    }
+  },
+})
+
+function benchmarkName(testInfo: TestInfo) {
+  return testInfo.titlePath.slice(1).join(" > ")
+}
+
+export { expect }
+
+async function observePerformancePage(page: Page, name: string) {
+  const navigations: string[] = []
+  const onNavigation = (frame: ReturnType<Page["mainFrame"]>) => {
+    if (frame === page.mainFrame()) navigations.push(frame.url())
+  }
+  page.on("framenavigated", onNavigation)
+  const stopTrace = await startChromeTrace(page, name).catch((error) => {
+    page.off("framenavigated", onNavigation)
+    throw error
+  })
+  let stopping: Promise<string | undefined> | undefined
+  const diagnostics: PerformancePageDiagnostics = {
+    navigations,
+    stop() {
+      page.off("framenavigated", onNavigation)
+      return (stopping ??= stopTrace?.() ?? Promise.resolve(undefined))
+    },
+  }
+  pages.set(page, diagnostics)
+  return diagnostics
+}
+
+export async function withBenchmarkPage<T>(
+  browser: Browser,
+  name: string,
+  run: (page: Page) => Promise<T>,
+  testInfo?: TestInfo,
+) {
+  const context = await browser.newContext()
+  try {
+    const page = await context.newPage()
+    const diagnostics = await observePerformancePage(page, name)
+    try {
+      return await run(page)
+    } finally {
+      await reportPerformancePage(name, diagnostics, testInfo)
+    }
+  } finally {
+    await context.close()
+  }
+}
+
+async function reportPerformancePage(name: string, diagnostics: PerformancePageDiagnostics, testInfo?: TestInfo) {
+  const trace = await diagnostics.stop()
+  console.log(
+    `BENCHMARK_PAGE ${JSON.stringify({
+      schemaVersion: 2,
+      runID: process.env.OPENCODE_PERFORMANCE_RUN_ID,
+      name,
+      test: testInfo ? benchmarkName(testInfo) : undefined,
+      retry: testInfo?.retry,
+      repeatEachIndex: testInfo?.repeatEachIndex,
+      context: {
+        platform: process.platform,
+        trace,
+        selectorTrace: process.env.OPENCODE_PERFORMANCE_SELECTOR_TRACE === "1",
+      },
+      navigations: diagnostics.navigations,
+    })}`,
+  )
+}
+
+export function benchmarkDiagnostics(page: Page) {
+  const diagnostics = pages.get(page)
+  if (!diagnostics) throw new Error("Performance diagnostics are not installed for this page")
+  return diagnostics
+}

packages/app/e2e/performance/chrome-trace.ts

@@ -0,0 +1,95 @@
+import type { CDPSession, Page } from "@playwright/test"
+import path from "node:path"
+import { mkdir, open, rename } from "node:fs/promises"
+import { Buffer } from "node:buffer"
+import { createHash, randomUUID } from "node:crypto"
+
+const categories = [
+  "-*",
+  "devtools.timeline",
+  "v8.execute",
+  "disabled-by-default-devtools.timeline",
+  "disabled-by-default-devtools.timeline.frame",
+  "toplevel",
+  "blink.console",
+  "blink.user_timing",
+  "latencyInfo",
+  "disabled-by-default-devtools.timeline.stack",
+  "disabled-by-default-v8.cpu_profiler",
+]
+
+export async function startChromeTrace(page: Page, name: string) {
+  const directory = process.env.OPENCODE_PERFORMANCE_TRACE_DIR
+  if (!directory) return
+
+  const selectors = process.env.OPENCODE_PERFORMANCE_SELECTOR_TRACE === "1"
+  const file = await prepareChromeTrace(directory, name, selectors)
+  const session = await page.context().newCDPSession(page)
+  try {
+    await session.send("Tracing.start", {
+      transferMode: "ReturnAsStream",
+      traceConfig: {
+        excludedCategories: categories
+          .filter((category) => category.startsWith("-"))
+          .map((category) => category.slice(1)),
+        includedCategories: [
+          ...categories.filter((category) => !category.startsWith("-")),
+          ...(selectors
+            ? ["disabled-by-default-blink.debug", "disabled-by-default-devtools.timeline.invalidationTracking"]
+            : []),
+        ],
+      },
+    })
+  } catch (error) {
+    await Promise.allSettled([session.detach()])
+    throw error
+  }
+  let stopping: Promise<string> | undefined
+
+  return () =>
+    (stopping ??= (async () => {
+      try {
+        const complete = new Promise<{ stream?: string; dataLossOccurred: boolean }>((resolve) =>
+          session.once("Tracing.tracingComplete", resolve),
+        )
+        await session.send("Tracing.end")
+        const result = await complete
+        if (!result.stream) throw new Error(`Chrome trace stream missing: ${file}`)
+        const partial = `${file}.partial`
+        await writeProtocolStream(session, result.stream, partial)
+        if (result.dataLossOccurred) throw new Error(`Chrome trace lost data; partial capture retained: ${partial}`)
+        await rename(partial, file)
+        return file
+      } finally {
+        await Promise.allSettled([session.detach()])
+      }
+    })())
+}
+
+export async function prepareChromeTrace(
+  directory: string,
+  name: string,
+  selectors: boolean,
+  nonce = randomUUID().slice(0, 8),
+) {
+  await mkdir(directory, { recursive: true })
+  const run = process.env.OPENCODE_PERFORMANCE_RUN_ID ?? "manual"
+  const hash = createHash("sha256").update(name).digest("hex").slice(0, 8)
+  return path.join(
+    directory,
+    `${run}-${name.replace(/[^a-zA-Z0-9_-]/g, "-")}-${hash}-${nonce}${selectors ? "-selectors" : ""}.json`,
+  )
+}
+
+async function writeProtocolStream(session: CDPSession, handle: string, file: string) {
+  const output = await open(file, "wx")
+  try {
+    while (true) {
+      const chunk = await session.send("IO.read", { handle })
+      await output.write(chunk.base64Encoded ? Buffer.from(chunk.data, "base64") : chunk.data)
+      if (chunk.eof) break
+    }
+  } finally {
+    await Promise.allSettled([output.close(), session.send("IO.close", { handle })])
+  }
+}

packages/app/e2e/performance/playwright.config.ts

@@ -0,0 +1,20 @@
+import config from "../../playwright.config"
+
+const port = Number(process.env.PLAYWRIGHT_PORT ?? 3000)
+process.env.PLAYWRIGHT_SERVER_PORT = String(port)
+process.env.OPENCODE_PERFORMANCE_RUN_ID ??= `${new Date().toISOString().replace(/[:.]/g, "-")}-${process.pid}`
+
+export default {
+  ...config,
+  testDir: ".",
+  testIgnore: "unit/**",
+  outputDir: "../test-results/performance",
+  fullyParallel: false,
+  workers: 1,
+  reporter: [["html", { outputFolder: "../playwright-report/performance", open: "never" }], ["line"]],
+  webServer: {
+    ...config.webServer,
+    command: `bun run build && bun run serve -- --host 0.0.0.0 --port ${port} --strictPort`,
+    reuseExistingServer: false,
+  },
+}

packages/app/e2e/performance/playwright.uncapped.config.ts

@@ -0,0 +1,13 @@
+import config from "./playwright.config"
+
+export default {
+  ...config,
+  outputDir: "../test-results/performance-uncapped",
+  reporter: [["html", { outputFolder: "../playwright-report/performance-uncapped", open: "never" }], ["line"]],
+  use: {
+    ...config.use,
+    launchOptions: {
+      args: ["--disable-frame-rate-limit", "--disable-gpu-vsync"],
+    },
+  },
+}

packages/app/e2e/performance/timeline/session-tab-flash.spec.ts

@@ -0,0 +1,49 @@
+import { benchmark, expect } from "../benchmark"
+import { expectSessionTitle } from "../../utils/waits"
+import { fixture } from "./session-timeline-stress.fixture"
+import {
+  collectCachedRepaintTrace,
+  compressCachedRepaintTrace,
+  installCachedRepaintProbe,
+  waitForCachedRepaintWindow,
+} from "./session-tab-repaint-probe"
+import { waitForStableTimeline } from "./session-tab-switch-probe"
+import {
+  installStressSessionTabs,
+  installTimelineSettings,
+  mockStressTimeline,
+  stressSessionHref,
+} from "./timeline-test-helpers"
+
+benchmark("samples cached session repaint after the click", async ({ page, report }) => {
+  benchmark.setTimeout(120_000)
+  await mockStressTimeline(page)
+  await installStressSessionTabs(page)
+  await installTimelineSettings(page)
+  await page.goto(stressSessionHref(fixture.targetID))
+  await expectSessionTitle(page, fixture.expected.targetTitle)
+  await waitForStableTimeline(page, fixture.expected.targetMessageIDs.at(-1)!)
+  await page
+    .locator(`[data-slot="titlebar-tabs"] a[href="${stressSessionHref(fixture.sourceID)}"]`)
+    .first()
+    .click()
+  await expectSessionTitle(page, fixture.expected.sourceTitle)
+  await waitForStableTimeline(page, fixture.expected.sourceMessageIDs.at(-1)!)
+
+  await installCachedRepaintProbe(page, {
+    targetHref: stressSessionHref(fixture.targetID),
+    destination: fixture.messages[fixture.targetID].map((message) => message.info.id),
+    source: fixture.messages[fixture.sourceID].map((message) => message.info.id),
+    last: fixture.expected.targetMessageIDs.at(-1)!,
+    windowMs: 1_000,
+  })
+
+  await page
+    .locator(`[data-slot="titlebar-tabs"] a[href="${stressSessionHref(fixture.targetID)}"]`)
+    .first()
+    .click()
+  await Promise.all([expectSessionTitle(page, fixture.expected.targetTitle), waitForCachedRepaintWindow(page, 1_000)])
+  const result = await collectCachedRepaintTrace(page)
+  report(compressCachedRepaintTrace(result))
+  expect(result.samples.length).toBeGreaterThan(0)
+})

packages/app/e2e/performance/timeline/session-tab-repaint-probe.ts

@@ -0,0 +1,251 @@
+import type { Page } from "@playwright/test"
+
+type CachedRepaintTrace = {
+  timeOriginEpochMs: number
+  startedAtPerformanceMs: number
+  samples: {
+    observedAtMs: number
+    root: number | undefined
+    scrollTop: number
+    scrollHeight: number
+    bottomErrorPx: number | undefined
+    last: boolean
+    rows: { key: string | undefined; node: number; top: number; bottom: number }[]
+    mounted: number
+    center: string | undefined
+    destination: string[]
+    source: string[]
+  }[]
+  mutations: { observedAtMs: number; changed: { type: string; node: number }[] }[]
+  shifts: { occurredAtMs: number; value: number }[]
+  windowMs: number
+  running: boolean
+  stop: () => void
+}
+
+export async function installCachedRepaintProbe(
+  page: Page,
+  input: { targetHref: string; destination: string[]; source: string[]; last: string; windowMs: number },
+) {
+  await page.evaluate(({ targetHref, destination, source, last, windowMs }) => {
+    const destinationIDs = new Set(destination)
+    const sourceIDs = new Set(source)
+    const nodeIDs = new WeakMap<Node, number>()
+    let nextNodeID = 1
+    const id = (node: Node) => {
+      const current = nodeIDs.get(node)
+      if (current) return current
+      nodeIDs.set(node, nextNodeID)
+      return nextNodeID++
+    }
+    const state: CachedRepaintTrace = {
+      timeOriginEpochMs: performance.timeOrigin,
+      startedAtPerformanceMs: 0,
+      samples: [],
+      mutations: [],
+      shifts: [],
+      windowMs,
+      running: false,
+      stop: () => {},
+    }
+    const recordShifts = (entries: PerformanceEntry[]) => {
+      if (!state.running) return
+      state.shifts.push(
+        ...entries
+          .map((entry) => {
+            if (
+              entry.startTime < state.startedAtPerformanceMs ||
+              entry.startTime > state.startedAtPerformanceMs + state.windowMs
+            )
+              return
+            return {
+              occurredAtMs: entry.startTime - state.startedAtPerformanceMs,
+              value: (entry as PerformanceEntry & { value: number }).value,
+            }
+          })
+          .filter((entry): entry is { occurredAtMs: number; value: number } => entry !== undefined),
+      )
+    }
+    const shiftObserver = new PerformanceObserver((entries) => recordShifts(entries.getEntries()))
+    shiftObserver.observe({ type: "layout-shift" })
+    const recordMutations = (entries: MutationRecord[]) => {
+      if (!state.running) return
+      const observedAtMs = performance.now() - state.startedAtPerformanceMs
+      if (observedAtMs > state.windowMs) return
+      const changed = entries.flatMap((entry) => [
+        ...[...entry.addedNodes].map((node) => ({ type: "add", node: id(node) })),
+        ...[...entry.removedNodes].map((node) => ({ type: "remove", node: id(node) })),
+      ])
+      if (changed.length) state.mutations.push({ observedAtMs, changed })
+    }
+    const mutationObserver = new MutationObserver(recordMutations)
+    mutationObserver.observe(document.documentElement, { childList: true, subtree: true })
+    state.stop = () => {
+      recordShifts(shiftObserver.takeRecords())
+      recordMutations(mutationObserver.takeRecords())
+      state.running = false
+      shiftObserver.disconnect()
+      mutationObserver.disconnect()
+    }
+    const sample = () => {
+      if (!state.running) return
+      setTimeout(() => {
+        if (!state.running) return
+        const observedAtMs = performance.now() - state.startedAtPerformanceMs
+        if (observedAtMs > state.windowMs) return
+        const root = [...document.querySelectorAll<HTMLElement>(".scroll-view__viewport")].find((element) =>
+          element.querySelector("[data-timeline-row]"),
+        )
+        if (root) {
+          const view = root.getBoundingClientRect()
+          const rows = [...root.querySelectorAll<HTMLElement>("[data-timeline-key]")]
+            .map((element) => ({
+              key: element.dataset.timelineKey,
+              node: id(element),
+              rect: element.getBoundingClientRect(),
+            }))
+            .filter((item) => item.rect.bottom > view.top && item.rect.top < view.bottom)
+            .map((item) => ({
+              key: item.key,
+              node: item.node,
+              top: item.rect.top - view.top,
+              bottom: item.rect.bottom - view.top,
+            }))
+          const messages = [...root.querySelectorAll<HTMLElement>("[data-message-id]")]
+            .filter((element) => {
+              const rect = element.getBoundingClientRect()
+              return rect.bottom > view.top && rect.top < view.bottom
+            })
+            .map((element) => element.dataset.messageId!)
+          const spacer = root.querySelector<HTMLElement>('[data-timeline-row="bottom-spacer"]')?.getBoundingClientRect()
+          state.samples.push({
+            observedAtMs,
+            root: id(root),
+            scrollTop: root.scrollTop,
+            scrollHeight: root.scrollHeight,
+            bottomErrorPx: spacer ? spacer.bottom - view.bottom : undefined,
+            last: messages.includes(last),
+            rows,
+            mounted: root.querySelectorAll("[data-timeline-key]").length,
+            center: document
+              .elementFromPoint(view.left + view.width / 2, view.top + view.height / 2)
+              ?.textContent?.slice(0, 80),
+            destination: messages.filter((messageID) => destinationIDs.has(messageID)),
+            source: messages.filter((messageID) => sourceIDs.has(messageID)),
+          })
+        } else {
+          state.samples.push({
+            observedAtMs,
+            root: undefined,
+            scrollTop: 0,
+            scrollHeight: 0,
+            bottomErrorPx: undefined,
+            last: false,
+            rows: [],
+            mounted: 0,
+            center: document.elementFromPoint(innerWidth / 2, innerHeight / 2)?.textContent?.slice(0, 80),
+            destination: [],
+            source: [],
+          })
+        }
+        requestAnimationFrame(sample)
+      }, 0)
+    }
+    document.addEventListener(
+      "click",
+      (event) => {
+        const link = event.target instanceof Element ? event.target.closest("a") : undefined
+        if (link?.getAttribute("href") !== targetHref) return
+        state.startedAtPerformanceMs = performance.now()
+        state.running = true
+        requestAnimationFrame(sample)
+      },
+      { capture: true, once: true },
+    )
+    ;(window as Window & { __cachedFlash?: CachedRepaintTrace }).__cachedFlash = state
+  }, input)
+}
+
+export function layoutShiftSample(entry: Pick<PerformanceEntry, "startTime"> & { value: number }, started: number) {
+  if (entry.startTime < started) return
+  return { occurredAtMs: entry.startTime - started, value: entry.value }
+}
+
+export async function waitForCachedRepaintWindow(page: Page, durationMs: number) {
+  await page.waitForFunction((durationMs) => {
+    const state = (window as Window & { __cachedFlash?: CachedRepaintTrace }).__cachedFlash
+    return !!state?.running && performance.now() - state.startedAtPerformanceMs >= durationMs
+  }, durationMs)
+}
+
+export async function collectCachedRepaintTrace(page: Page) {
+  return page.evaluate(() => {
+    const state = (window as Window & { __cachedFlash?: CachedRepaintTrace }).__cachedFlash!
+    state.stop()
+    return state
+  })
+}
+
+export function summarizeCachedRepaintTrace(trace: CachedRepaintTrace) {
+  const roots = trace.samples.map((sample) => sample.root)
+  const bottomErrors = trace.samples.flatMap((sample) =>
+    sample.bottomErrorPx === undefined ? [] : [Math.abs(sample.bottomErrorPx)],
+  )
+  const category = (sample: CachedRepaintTrace["samples"][number]) => {
+    if (sample.source.length) return "source"
+    if (sample.root === undefined || sample.rows.length === 0) return "blank"
+    if (!sample.destination.length) return "unknown"
+    if (sample.last && Math.abs(sample.bottomErrorPx ?? Infinity) <= 1) return "correct"
+    return "wrongDestination"
+  }
+  return {
+    samples: trace.samples.length,
+    durationMs: trace.samples.at(-1)?.observedAtMs ?? 0,
+    firstSampleObservedMs: trace.samples[0]?.observedAtMs,
+    firstSampleCorrect: trace.samples[0] ? category(trace.samples[0]) === "correct" : false,
+    blankSamples: trace.samples.filter((sample) => category(sample) === "blank").length,
+    sourceSamples: trace.samples.filter((sample) => category(sample) === "source").length,
+    wrongDestinationSamples: trace.samples.filter((sample) => category(sample) === "wrongDestination").length,
+    unknownSamples: trace.samples.filter((sample) => category(sample) === "unknown").length,
+    rootChanges: roots.slice(1).filter((root, index) => root !== roots[index]).length,
+    mountedMin: trace.samples.length ? Math.min(...trace.samples.map((sample) => sample.mounted)) : 0,
+    mountedMax: Math.max(...trace.samples.map((sample) => sample.mounted)),
+    maxBottomErrorPx: Math.max(0, ...bottomErrors),
+    mutationBatches: trace.mutations.length,
+    addedNodes: trace.mutations.reduce(
+      (sum, batch) => sum + batch.changed.filter((change) => change.type === "add").length,
+      0,
+    ),
+    removedNodes: trace.mutations.reduce(
+      (sum, batch) => sum + batch.changed.filter((change) => change.type === "remove").length,
+      0,
+    ),
+    layoutShiftValueSum: trace.shifts.reduce((sum, shift) => sum + shift.value, 0),
+    maxLayoutShiftValue: Math.max(0, ...trace.shifts.map((shift) => shift.value)),
+  }
+}
+
+export function compressCachedRepaintTrace(trace: CachedRepaintTrace) {
+  const samples: {
+    observedAtMs: number[]
+    state: Omit<CachedRepaintTrace["samples"][number], "observedAtMs">
+  }[] = []
+  for (const sample of trace.samples) {
+    const { observedAtMs, ...state } = sample
+    const previous = samples.at(-1)
+    if (previous && JSON.stringify(previous.state) === JSON.stringify(state)) {
+      previous.observedAtMs.push(observedAtMs)
+      continue
+    }
+    samples.push({ observedAtMs: [observedAtMs], state })
+  }
+  return {
+    timeOriginEpochMs: trace.timeOriginEpochMs,
+    startedAtPerformanceMs: trace.startedAtPerformanceMs,
+    windowMs: trace.windowMs,
+    summary: summarizeCachedRepaintTrace(trace),
+    samples,
+    mutations: trace.mutations,
+    shifts: trace.shifts,
+  }
+}

packages/app/e2e/performance/timeline/session-tab-switch-benchmark.spec.ts

@@ -0,0 +1,79 @@
+import type { Page } from "@playwright/test"
+import { expectSessionTitle } from "../../utils/waits"
+import { benchmark, expect, withBenchmarkPage } from "../benchmark"
+import { fixture } from "./session-timeline-stress.fixture"
+import { installStressSessionTabs, mockStressTimeline, stressSessionHref } from "./timeline-test-helpers"
+import { measureSessionSwitch, waitForStableTimeline } from "./session-tab-switch-probe"
+
+type Result = Awaited<ReturnType<typeof measureSessionSwitch>>
+
+benchmark("benchmarks cold and hot session tab switching", async ({ browser, report }, testInfo) => {
+  benchmark.setTimeout(180_000)
+  const results = { cold: [] as Result[], hot: [] as Result[] }
+  for (const mode of ["cold", "hot"] as const) {
+    for (let run = 0; run < 5; run++) {
+      results[mode].push(
+        await withBenchmarkPage(browser, `session-tab-switch-${mode}-${run}`, (page) => trial(page, mode), testInfo),
+      )
+    }
+  }
+  report({ results, summary: summarize(results) })
+})
+
+async function trial(page: Page, mode: "cold" | "hot") {
+  await mockStressTimeline(page)
+  await installStressSessionTabs(page)
+  if (mode === "hot") {
+    await page.goto(stressSessionHref(fixture.targetID))
+    await expectSessionTitle(page, fixture.expected.targetTitle)
+    await waitForStableTimeline(page, fixture.expected.targetMessageIDs.at(-1)!)
+    await switchSession(page, fixture.sourceID, fixture.expected.sourceTitle)
+  } else {
+    await page.goto(stressSessionHref(fixture.sourceID))
+    await expectSessionTitle(page, fixture.expected.sourceTitle)
+  }
+  await waitForStableTimeline(page, fixture.expected.sourceMessageIDs.at(-1)!)
+
+  const destinationIDs = fixture.messages[fixture.targetID].map((message) => message.info.id)
+  const sourceIDs = fixture.messages[fixture.sourceID].map((message) => message.info.id)
+  const lastID = fixture.expected.targetMessageIDs.at(-1)!
+  const href = stressSessionHref(fixture.targetID)
+  const result = await measureSessionSwitch(page, {
+    destinationIDs,
+    sourceIDs,
+    lastID,
+    href,
+    switch: () => switchSession(page, fixture.targetID, fixture.expected.targetTitle),
+  })
+  return result
+}
+
+function summarize(results: Record<"cold" | "hot", Result[]>) {
+  const stats = (values: (number | null)[]) => {
+    const sorted = values.filter((value): value is number => value !== null).sort((a, b) => a - b)
+    return {
+      min: sorted[0] ?? null,
+      median: sorted[Math.floor(sorted.length / 2)] ?? null,
+      max: sorted.at(-1) ?? null,
+      missing: values.length - sorted.length,
+    }
+  }
+  return Object.fromEntries(
+    Object.entries(results).map(([mode, values]) => [
+      mode,
+      {
+        firstDestinationObservedMs: stats(values.map((value) => value.firstDestinationObservedMs)),
+        firstCorrectObservedMs: stats(values.map((value) => value.firstCorrectObservedMs)),
+        stableObservedMs: stats(values.map((value) => value.stableObservedMs)),
+      },
+    ]),
+  )
+}
+
+async function switchSession(page: Page, sessionID: string, title: string) {
+  const href = stressSessionHref(sessionID)
+  const tab = page.locator(`[data-slot="titlebar-tabs"] a[href="${href}"]`).first()
+  await expect(tab).toBeVisible()
+  await tab.click()
+  await expectSessionTitle(page, title)
+}

packages/app/e2e/performance/timeline/session-tab-switch-metrics.ts

@@ -0,0 +1,46 @@
+export type SessionSwitchSample = {
+  observedAtMs: number
+  destination: string[]
+  source: string[]
+  hasVisibleRows: boolean
+  last: boolean
+  bottomErrorPx?: number
+}
+
+export function classifySessionSwitch(samples: SessionSwitchSample[]) {
+  const firstDestination = samples.findIndex((sample) => sample.destination.length > 0)
+  const firstCorrect = samples.findIndex(isCorrectDestination)
+  const stable = samples.findIndex((_, index) => isStableSessionSwitch(samples.slice(index, index + 3)))
+  return {
+    firstDestinationObservedMs: samples[firstDestination]?.observedAtMs ?? null,
+    firstCorrectObservedMs: samples[firstCorrect]?.observedAtMs ?? null,
+    stableObservedMs: samples[stable + 2]?.observedAtMs ?? null,
+    wrongDestinationSamples: samples
+      .slice(firstDestination)
+      .filter((sample) => sample.destination.length > 0 && !sample.last).length,
+    blankSamples: samples.filter((sample) => !sample.hasVisibleRows).length,
+    unknownSamples: samples.filter(
+      (sample) => sample.hasVisibleRows && sample.destination.length === 0 && sample.source.length === 0,
+    ).length,
+    sourceSamples: samples.filter((sample) => sample.source.length > 0).length,
+  }
+}
+
+export function isCorrectDestination(sample: SessionSwitchSample) {
+  return (
+    sample.destination.length > 0 &&
+    sample.source.length === 0 &&
+    sample.last &&
+    Math.abs(sample.bottomErrorPx ?? Infinity) <= 1
+  )
+}
+
+export function isStableSessionSwitch(samples: SessionSwitchSample[]) {
+  return samples.length === 3 && samples.every(isCorrectDestination)
+}
+
+export function isStableDestination(samples: Pick<SessionSwitchSample, "last" | "bottomErrorPx">[]) {
+  return (
+    samples.length === 3 && samples.every((sample) => sample.last && Math.abs(sample.bottomErrorPx ?? Infinity) <= 1)
+  )
+}

packages/app/e2e/performance/timeline/session-tab-switch-probe.ts

@@ -0,0 +1,152 @@
+import { expect, type Page } from "@playwright/test"
+import { classifySessionSwitch, isStableDestination, type SessionSwitchSample } from "./session-tab-switch-metrics"
+
+type SessionSwitchProbe = {
+  samples: SessionSwitchSample[]
+  stop: () => void
+}
+
+async function installSessionSwitchProbe(
+  page: Page,
+  input: { destinationIDs: string[]; sourceIDs: string[]; lastID: string; href: string },
+) {
+  await page.evaluate(({ destinationIDs, sourceIDs, lastID, href }) => {
+    const destination = new Set(destinationIDs)
+    const source = new Set(sourceIDs)
+    const samples: SessionSwitchSample[] = []
+    let started: number | undefined
+    let running = true
+    const sample = () => {
+      if (!running || started === undefined) return
+      setTimeout(() => {
+        if (!running || started === undefined) return
+        const observedAtMs = performance.now() - started
+        const root = [...document.querySelectorAll<HTMLElement>(".scroll-view__viewport")].find((element) =>
+          element.querySelector("[data-timeline-row]"),
+        )
+        if (root) {
+          const view = root.getBoundingClientRect()
+          const visible = [...root.querySelectorAll<HTMLElement>("[data-message-id]")]
+            .filter((element) => {
+              const rect = element.getBoundingClientRect()
+              return rect.bottom > view.top && rect.top < view.bottom
+            })
+            .map((element) => element.dataset.messageId!)
+          const hasVisibleRows = [...root.querySelectorAll<HTMLElement>("[data-timeline-key]")].some((element) => {
+            const rect = element.getBoundingClientRect()
+            return rect.bottom > view.top && rect.top < view.bottom
+          })
+          const spacer = root.querySelector<HTMLElement>('[data-timeline-row="bottom-spacer"]')?.getBoundingClientRect()
+          samples.push({
+            observedAtMs,
+            destination: visible.filter((id) => destination.has(id)),
+            source: visible.filter((id) => source.has(id)),
+            hasVisibleRows,
+            last: visible.includes(lastID),
+            bottomErrorPx: spacer ? spacer.bottom - view.bottom : undefined,
+          })
+        } else {
+          samples.push({ observedAtMs, destination: [], source: [], hasVisibleRows: false, last: false })
+        }
+        requestAnimationFrame(sample)
+      }, 0)
+    }
+    document.addEventListener(
+      "click",
+      (event) => {
+        const link = event.target instanceof Element ? event.target.closest("a") : undefined
+        if (link?.getAttribute("href") !== href) return
+        started = performance.now()
+        requestAnimationFrame(sample)
+      },
+      { capture: true, once: true },
+    )
+    ;(window as Window & { __sessionSwitchProbe?: SessionSwitchProbe }).__sessionSwitchProbe = {
+      samples,
+      stop: () => {
+        running = false
+      },
+    }
+  }, input)
+}
+
+async function waitForStableSessionSwitch(page: Page) {
+  await page.waitForFunction(() => {
+    const samples = (window as Window & { __sessionSwitchProbe?: SessionSwitchProbe }).__sessionSwitchProbe?.samples
+    if (!samples) return false
+    return samples.some((_, index) => {
+      const stable = samples.slice(index, index + 3)
+      return (
+        stable.length === 3 &&
+        stable.every(
+          (sample) =>
+            sample.destination.length > 0 &&
+            sample.source.length === 0 &&
+            sample.last &&
+            Math.abs(sample.bottomErrorPx ?? Infinity) <= 1,
+        )
+      )
+    })
+  })
+}
+
+async function collectSessionSwitchResult(page: Page) {
+  const samples = await page.evaluate(() => {
+    const probe = (window as Window & { __sessionSwitchProbe?: SessionSwitchProbe }).__sessionSwitchProbe!
+    probe.stop()
+    return probe.samples
+  })
+  return classifySessionSwitch(samples)
+}
+
+export async function measureSessionSwitch(
+  page: Page,
+  input: { destinationIDs: string[]; sourceIDs: string[]; lastID: string; href: string; switch: () => Promise<void> },
+) {
+  const { switch: run, ...probe } = input
+  await installSessionSwitchProbe(page, probe)
+  await run()
+  await waitForStableSessionSwitch(page)
+  return collectSessionSwitchResult(page)
+}
+
+export async function waitForStableTimeline(page: Page, lastID: string) {
+  const samples: Pick<SessionSwitchSample, "last" | "bottomErrorPx">[] = []
+  await expect
+    .poll(
+      async () => {
+        samples.push(
+          await page.evaluate(
+            (lastID) =>
+              new Promise<Pick<SessionSwitchSample, "last" | "bottomErrorPx">>((resolve) => {
+                requestAnimationFrame(() =>
+                  setTimeout(() => {
+                    const root = [...document.querySelectorAll<HTMLElement>(".scroll-view__viewport")].find((element) =>
+                      element.querySelector("[data-timeline-row]"),
+                    )
+                    if (!root) {
+                      resolve({ last: false })
+                      return
+                    }
+                    const view = root.getBoundingClientRect()
+                    const last = [...root.querySelectorAll<HTMLElement>("[data-message-id]")].some((element) => {
+                      if (element.dataset.messageId !== lastID) return false
+                      const rect = element.getBoundingClientRect()
+                      return rect.bottom > view.top && rect.top < view.bottom
+                    })
+                    const spacer = root
+                      .querySelector<HTMLElement>('[data-timeline-row="bottom-spacer"]')
+                      ?.getBoundingClientRect()
+                    resolve({ last, bottomErrorPx: spacer ? spacer.bottom - view.bottom : undefined })
+                  }, 0),
+                )
+              }),
+            lastID,
+          ),
+        )
+        return isStableDestination(samples.slice(-3))
+      },
+      { timeout: 30_000, intervals: [0] },
+    )
+    .toBe(true)
+}

packages/app/e2e/performance/timeline/session-timeline-benchmark.fixture.ts

@@ -0,0 +1,488 @@
+import { base64Encode } from "@opencode-ai/core/util/encode"
+import type { Page } from "@playwright/test"
+import { mockOpenCodeServer } from "../../utils/mock-server"
+import { expectAppVisible, expectSessionTitle } from "../../utils/waits"
+import { expect } from "../benchmark"
+
+const directory = "C:/OpenCode/TimelineStateRegression"
+const projectID = "proj_timeline_state_regression"
+const sessionID = "ses_timeline_state_regression"
+const userMessageID = "msg_user_regression"
+const assistantMessageID = "msg_assistant_regression"
+const editPartID = "prt_0001_edit"
+export const textPartID = "prt_9999_text"
+const title = "Timeline collapse state regression"
+const model = { providerID: "opencode", modelID: "claude-opus-4-6", variant: "max" }
+
+type EventPayload = {
+  directory: string
+  payload: Record<string, unknown>
+}
+
+const userMessage = {
+  info: {
+    id: userMessageID,
+    sessionID,
+    role: "user",
+    time: { created: 1700000000000 },
+    summary: { diffs: [] },
+    agent: "build",
+    model,
+  },
+  parts: [
+    {
+      id: "prt_user_text",
+      sessionID,
+      messageID: userMessageID,
+      type: "text",
+      text: "Please edit the file.",
+    },
+  ],
+}
+
+const editPart = {
+  id: editPartID,
+  sessionID,
+  messageID: assistantMessageID,
+  type: "tool",
+  callID: "call_edit_regression",
+  tool: "edit",
+  state: {
+    status: "completed",
+    input: { filePath: "src/regression.ts" },
+    output: "Edited src/regression.ts",
+    title: "src/regression.ts",
+    metadata: {
+      filediff: {
+        file: "src/regression.ts",
+        additions: 1,
+        deletions: 1,
+        before: "export const value = 'before'\n",
+        after: "export const value = 'after'\n",
+      },
+      diff: "diff --git a/src/regression.ts b/src/regression.ts\n-export const value = 'before'\n+export const value = 'after'\n",
+    },
+    time: { start: 1700000001000, end: 1700000002000 },
+  },
+}
+
+const streamedTextPart = {
+  id: textPartID,
+  sessionID,
+  messageID: assistantMessageID,
+  type: "text",
+  text: "Streaming added a later assistant text part.",
+}
+
+const assistantMessage = {
+  info: {
+    id: assistantMessageID,
+    sessionID,
+    role: "assistant",
+    time: { created: 1700000001000 },
+    parentID: userMessageID,
+    modelID: model.modelID,
+    providerID: model.providerID,
+    mode: "build",
+    agent: "build",
+    path: { cwd: directory, root: directory },
+    cost: 0.01,
+    tokens: { input: 100, output: 200, reasoning: 0, cache: { read: 0, write: 0 } },
+    variant: "max",
+  },
+  parts: [editPart],
+}
+
+export async function setupTimelineBenchmark(page: Page, options: { historyTurns: number; eventBatch: number }) {
+  const events: EventPayload[] = []
+  let eventBatch = options.eventBatch
+  await mockOpenCodeServer(page, {
+    directory,
+    project: project(),
+    provider: provider(),
+    sessions: [session()],
+    pageMessages: () => ({
+      items: [
+        ...Array.from({ length: options.historyTurns }, (_, index) => performanceTurn(index)).flat(),
+        userMessage,
+        assistantMessage,
+      ],
+    }),
+    events: () => events.splice(0, eventBatch),
+    eventRetry: 16,
+  })
+  await page.addInitScript(() => {
+    localStorage.setItem(
+      "settings.v3",
+      JSON.stringify({
+        general: {
+          editToolPartsExpanded: true,
+          shellToolPartsExpanded: true,
+          showReasoningSummaries: true,
+          showSessionProgressBar: true,
+        },
+      }),
+    )
+  })
+  await page.setViewportSize({ width: 1366, height: 768 })
+  const scroller = page.locator(".scroll-view__viewport", { has: page.locator("[data-timeline-row]") })
+  const text = page.locator(`[data-timeline-part-id="${textPartID}"]`).first()
+  await page.goto(`/${base64Encode(directory)}/session/${sessionID}`)
+  await expectSessionTitle(page, title)
+  await expectAppVisible(scroller)
+  return {
+    scroller,
+    text,
+    transport: {
+      enqueue(payload: EventPayload | EventPayload[]) {
+        events.push(...(Array.isArray(payload) ? payload : [payload]))
+      },
+      pendingCount() {
+        return events.length
+      },
+      releaseAll() {
+        eventBatch = events.length
+      },
+    },
+    async scrollToBottom() {
+      await scroller.evaluate((element) => {
+        element.scrollTop = element.scrollHeight
+      })
+    },
+    async waitForStableGeometry() {
+      await expect
+        .poll(() => scroller.evaluate((element) => element.scrollHeight - element.clientHeight - element.scrollTop))
+        .toBeLessThanOrEqual(1)
+      await page.waitForFunction((partID) => {
+        const root = [...document.querySelectorAll<HTMLElement>(".scroll-view__viewport")].find((element) =>
+          element.querySelector(`[data-timeline-part-id="${partID}"]`),
+        )
+        if (!root) return false
+        return new Promise<boolean>((resolve) => {
+          const height = root.scrollHeight
+          requestAnimationFrame(() =>
+            requestAnimationFrame(() =>
+              resolve(root.scrollHeight === height && root.scrollHeight - root.clientHeight - root.scrollTop <= 1),
+            ),
+          )
+        })
+      }, textPartID)
+    },
+  }
+}
+
+export function buildInitialStreamEvent(deltaCount: number): EventPayload {
+  return {
+    directory,
+    payload: {
+      type: "message.part.updated",
+      properties: {
+        part: {
+          ...streamedTextPart,
+          text: `Streaming${streamChunk(0, deltaCount + 1)}\n\n\`\`\`ts\nconst initial = true\n\`\`\``,
+        },
+      },
+    },
+  }
+}
+
+export function buildStreamDeltaEvents(deltaCount: number): EventPayload[] {
+  return Array.from({ length: deltaCount }, (_, index) => ({
+    directory,
+    payload: {
+      type: "message.part.delta",
+      properties: {
+        messageID: assistantMessageID,
+        partID: textPartID,
+        field: "text",
+        delta: streamChunk(index + 1, deltaCount + 1),
+      },
+    },
+  }))
+}
+
+function performanceTurn(index: number) {
+  const suffix = String(index).padStart(4, "0")
+  const userID = `msg_0000_${suffix}_a_user`
+  const assistantID = `msg_0000_${suffix}_b_assistant`
+  const before = historicalSource(index, false)
+  const after = historicalSource(index, true)
+  const parts = [
+    ...(index % 5 === 0
+      ? [
+          {
+            id: `prt_0000_${suffix}_reasoning`,
+            sessionID,
+            messageID: assistantID,
+            type: "reasoning",
+            text: `Reviewing the existing implementation. ${"constraint analysis ".repeat(20)}`,
+            time: { start: 1690000001000 + index * 2_000, end: 1690000001200 + index * 2_000 },
+          },
+        ]
+      : []),
+    {
+      id: `prt_0000_${suffix}_assistant`,
+      sessionID,
+      messageID: assistantID,
+      type: "text",
+      text: historicalMarkdown(index),
+    },
+    ...(index % 8 === 0
+      ? [
+          {
+            id: `prt_0000_${suffix}_edit`,
+            sessionID,
+            messageID: assistantID,
+            type: "tool",
+            callID: `call_0000_${suffix}_edit`,
+            tool: "edit",
+            state: {
+              status: "completed",
+              input: { filePath: `src/history-${index}.ts` },
+              output: `Edited src/history-${index}.ts`,
+              title: `src/history-${index}.ts`,
+              metadata: {
+                filediff: { file: `src/history-${index}.ts`, additions: 48, deletions: 48, before, after },
+              },
+              time: { start: 1690000001200 + index * 2_000, end: 1690000001400 + index * 2_000 },
+            },
+          },
+        ]
+      : []),
+    ...(index % 12 === 0
+      ? [
+          {
+            id: `prt_0000_${suffix}_write`,
+            sessionID,
+            messageID: assistantID,
+            type: "tool",
+            callID: `call_0000_${suffix}_write`,
+            tool: "write",
+            state: {
+              status: "completed",
+              input: { filePath: `src/generated-${index}.tsx`, content: after },
+              output: `Wrote src/generated-${index}.tsx`,
+              title: `src/generated-${index}.tsx`,
+              metadata: {
+                filediff: { file: `src/generated-${index}.tsx`, additions: 32, deletions: 0, before: "", after },
+              },
+              time: { start: 1690000001400 + index * 2_000, end: 1690000001500 + index * 2_000 },
+            },
+          },
+        ]
+      : []),
+    ...(index % 16 === 0
+      ? [
+          {
+            id: `prt_0000_${suffix}_patch`,
+            sessionID,
+            messageID: assistantID,
+            type: "tool",
+            callID: `call_0000_${suffix}_patch`,
+            tool: "apply_patch",
+            state: {
+              status: "completed",
+              input: { patchText: realisticPatch(index) },
+              output: "Success. Updated src/components/SessionCard.tsx",
+              title: "src/components/SessionCard.tsx",
+              metadata: {
+                files: [
+                  {
+                    filePath: "src/components/SessionCard.tsx",
+                    relativePath: "src/components/SessionCard.tsx",
+                    type: "update",
+                    additions: 8,
+                    deletions: 3,
+                    patch: realisticPatch(index),
+                    before,
+                    after,
+                  },
+                ],
+              },
+              time: { start: 1690000001500 + index * 2_000, end: 1690000001700 + index * 2_000 },
+            },
+          },
+        ]
+      : []),
+  ]
+  return [
+    {
+      info: {
+        id: userID,
+        sessionID,
+        role: "user",
+        time: { created: 1690000000000 + index * 2_000 },
+        summary: { diffs: [] },
+        agent: "build",
+        model,
+      },
+      parts: [
+        {
+          id: `prt_0000_${suffix}_user`,
+          sessionID,
+          messageID: userID,
+          type: "text",
+          text: `Historical prompt ${index}`,
+        },
+      ],
+    },
+    {
+      info: {
+        id: assistantID,
+        sessionID,
+        role: "assistant",
+        time: { created: 1690000001000 + index * 2_000, completed: 1690000001500 + index * 2_000 },
+        parentID: userID,
+        modelID: model.modelID,
+        providerID: model.providerID,
+        mode: "build",
+        agent: "build",
+        path: { cwd: directory, root: directory },
+        cost: 0.01,
+        tokens: { input: 100, output: 200, reasoning: 0, cache: { read: 0, write: 0 } },
+        variant: "max",
+        finish: "stop",
+      },
+      parts,
+    },
+  ]
+}
+
+function historicalMarkdown(index: number) {
+  const code = `import { For, Show, createSignal } from "solid-js"
+
+type SessionRow = { id: string; title: string; active: boolean }
+
+export function SessionList(props: { rows: SessionRow[] }) {
+  const [selected, setSelected] = createSignal<string>()
+  return (
+    <section aria-label="Sessions">
+      <For each={props.rows}>{(row) => (
+        <button classList={{ active: row.active }} onClick={() => setSelected(row.id)}>
+          <Show when={selected() === row.id} fallback={row.title}>{row.title.toUpperCase()}</Show>
+        </button>
+      )}</For>
+    </section>
+  )
+}`
+  return `## Session renderer review ${index}
+
+The active session keeps **semantic row identity** while reconciling measured content. See [Solid documentation](https://docs.solidjs.com/) and the inline \`measureElement(node)\` call.
+
+| Concern | Current behavior | Verification |
+| --- | --- | --- |
+| streaming | appends Markdown blocks | painted frames |
+| geometry | anchors visible rows | DOM coordinates |
+| tools | preserves expanded state | keyed remount probe |
+
+> Long sessions combine Markdown, syntax highlighting, tool output, and asynchronously rendered diffs.
+
+${index % 4 === 0 ? `\`\`\`tsx\n${code}\n\`\`\`\n\n\`\`\`bash\nbun typecheck\nbun test --preload ./happydom.ts ./src/pages/session\ngit diff --check\n\`\`\`` : "- preserve the viewport anchor\n- avoid replacing stable Markdown nodes\n- process provider deltas without blocking input"}`
+}
+
+function historicalSource(index: number, updated: boolean) {
+  const method = updated ? "toLocaleUpperCase(props.locale)" : "toUpperCase()"
+  const limit = updated ? 24 : 20
+  return `import { createMemo, For } from "solid-js"
+
+type Message = {
+  id: string
+  role: "user" | "assistant"
+  text: string
+  tokens: { input: number; output: number }
+}
+
+export function MessageSummary(props: { messages: Message[]; locale: string }) {
+  const visible = createMemo(() => props.messages.filter((message) => message.text.trim()).slice(-${limit}))
+  const total = createMemo(() => visible().reduce((sum, message) => sum + message.tokens.output, 0))
+  return (
+    <article data-session-index="${index}">
+      <header>{total().toLocaleString(props.locale)} output tokens</header>
+      <For each={visible()}>{(message) => <p data-role={message.role}>{message.text.${method}}</p>}</For>
+    </article>
+  )
+}
+`
+}
+
+function realisticPatch(index: number) {
+  return `*** Begin Patch
+*** Update File: src/components/SessionCard.tsx
+@@
+-const title = props.session.title.toUpperCase()
+-const messages = props.messages.slice(-20)
++const title = props.session.title.toLocaleUpperCase(props.locale)
++const messages = props.messages.filter((message) => message.text.trim()).slice(-24)
++const outputTokens = messages.reduce((sum, message) => sum + message.tokens.output, 0)
+@@
+-  <h2>{title}</h2>
++  <h2 data-session-index="${index}">{title}</h2>
++  <span>{outputTokens.toLocaleString(props.locale)} output tokens</span>
+*** End Patch`
+}
+
+export function streamChunk(index: number, count: number) {
+  if (index === 0) return `\n\n## Implementation plan\n\nStreaming **bold analysis`
+  if (index === count - 1)
+    return `\n\`\`\`\n\n## Verification\n\n- **Typecheck:** passed\n- **Timeline geometry:** stable\n- **Streaming output:** benchmark-complete <!-- stream-${index} -->`
+
+  const section = Math.floor(index / 18) + 1
+  const fragments = [
+    ` continues across three`,
+    ` or four word`,
+    ` provider deltas and`,
+    ` closes in this fragment**. <!-- stream-${index} -->\n\n`,
+    `| Concern | State`,
+    ` | Verification |\n|`,
+    ` --- | ---`,
+    ` | --- |\n|`,
+    ` markdown | incremental |`,
+    ` painted frames | <!-- stream-${index} -->\n\n`,
+    `\`\`\`tsx\nconst row: SessionRow`,
+    ` = rows[index] ??`,
+    ` fallback\nconst title =`,
+    ` row.title.toLocaleUpperCase(locale)\n`,
+    `const selected = createMemo(()`,
+    ` => row.id ===`,
+    ` activeID()) // stream-${index}\n`,
+    `// stream-${index}\n\`\`\`\n\n### Iteration ${section}\n\nStreaming **bold analysis`,
+  ]
+  return fragments[(index - 1) % fragments.length]!
+}
+
+function project() {
+  return {
+    id: projectID,
+    worktree: directory,
+    vcs: "git",
+    name: "timeline-state-regression",
+    time: { created: 1700000000000, updated: 1700000000000 },
+    sandboxes: [],
+  }
+}
+
+function session() {
+  return {
+    id: sessionID,
+    slug: "timeline-state-regression",
+    projectID,
+    directory,
+    title,
+    version: "dev",
+    time: { created: 1700000000000, updated: 1700000000000 },
+  }
+}
+
+function provider() {
+  return {
+    all: [
+      {
+        id: "opencode",
+        name: "OpenCode",
+        models: { "claude-opus-4-6": { id: "claude-opus-4-6", name: "Claude Opus 4.6", limit: { context: 200_000 } } },
+      },
+    ],
+    connected: ["opencode"],
+    default: { providerID: "opencode", modelID: "claude-opus-4-6" },
+  }
+}

packages/app/e2e/performance/timeline/session-timeline-benchmark.spec.ts

@@ -0,0 +1,85 @@
+import { benchmark, benchmarkDiagnostics, expect } from "../benchmark"
+import {
+  buildInitialStreamEvent,
+  buildStreamDeltaEvents,
+  setupTimelineBenchmark,
+  textPartID,
+} from "./session-timeline-benchmark.fixture"
+import { startTimelineProfile } from "./session-timeline-profile"
+import {
+  collectTimelineStreamMetrics,
+  installTimelineStreamProbe,
+  startTimelineStreamProbe,
+} from "./session-timeline-stream-probe"
+
+benchmark.describe("performance: session timeline streaming", () => {
+  benchmark("streams assistant text without remounting or oscillating", async ({ page, report }) => {
+    benchmark.setTimeout(480_000)
+    const cpuThrottle = Number(process.env.TIMELINE_CPU_THROTTLE ?? 30)
+    const deltaCount = Number(process.env.TIMELINE_DELTA_COUNT ?? 160)
+    const historyTurns = Number(process.env.TIMELINE_HISTORY_TURNS ?? 320)
+    const eventBatch = Number(process.env.TIMELINE_EVENT_BATCH ?? 1)
+    const minimal = process.env.TIMELINE_MINIMAL === "1"
+    const profileCPU = process.env.TIMELINE_CPU_PROFILE === "1"
+    const profileVisual = !minimal && profileCPU && process.env.TIMELINE_VISUAL_PROFILE !== "0"
+    const fixture = await setupTimelineBenchmark(page, {
+      historyTurns,
+      eventBatch,
+    })
+
+    fixture.transport.enqueue(buildInitialStreamEvent(deltaCount))
+    const contentStart = performance.now()
+    await expect(fixture.text).toBeVisible()
+    await expect(fixture.text).toContainText("Implementation plan")
+    const initialContentObservedMs = performance.now() - contentStart
+    await fixture.scrollToBottom()
+    await fixture.waitForStableGeometry()
+
+    const profile = await startTimelineProfile(page, { cpuThrottle, profileCPU })
+    await installTimelineStreamProbe(page, { textPartID, finalIndex: deltaCount, profileVisual, minimal })
+    const deltas = buildStreamDeltaEvents(deltaCount)
+    await startTimelineStreamProbe(page)
+    fixture.transport.enqueue(deltas)
+
+    await page.waitForFunction(
+      (finalIndex) =>
+        (
+          window as Window & {
+            __timelineStreamBenchmark?: { applied: { index: number }[] }
+          }
+        ).__timelineStreamBenchmark?.applied.some((value) => value.index === finalIndex),
+      deltaCount,
+      { timeout: 420_000 },
+    )
+    await expect(fixture.text).toContainText("benchmark-complete")
+    await expect(fixture.text).toContainText("Streaming")
+    await fixture.waitForStableGeometry()
+    const metrics = await collectTimelineStreamMetrics(page, {
+      textPartID,
+      finalIndex: deltaCount,
+      navigations: benchmarkDiagnostics(page).navigations,
+    })
+    const delivered = deltas.length - fixture.transport.pendingCount()
+    await profile.stop()
+
+    report(
+      {
+        endToEndInitialContentObservedMs: initialContentObservedMs,
+        ...metrics,
+        deliveredDeltas: delivered,
+        pendingDeltas: fixture.transport.pendingCount(),
+      },
+      {
+        cpuThrottle,
+        profileCPU,
+        profileVisual,
+        minimal,
+        queuedDeltas: deltas.length,
+        historyTurns,
+        eventBatch,
+      },
+    )
+
+    await profile.reset()
+  })
+})

packages/app/e2e/performance/timeline/session-timeline-profile.ts

@@ -0,0 +1,40 @@
+import type { CDPSession, Page } from "@playwright/test"
+
+export async function startTimelineProfile(page: Page, options: { cpuThrottle: number; profileCPU: boolean }) {
+  const cdp = await page.context().newCDPSession(page)
+  if (options.cpuThrottle > 1) await cdp.send("Emulation.setCPUThrottlingRate", { rate: options.cpuThrottle })
+  if (options.profileCPU) {
+    await cdp.send("Profiler.enable")
+    await cdp.send("Profiler.setSamplingInterval", { interval: 100 })
+    await cdp.send("Profiler.start")
+  }
+  return {
+    async stop() {
+      if (!options.profileCPU) return
+      const result = await cdp.send("Profiler.stop")
+      const self = new Map<number, number>()
+      result.profile.samples?.forEach((id, index) => {
+        const duration = (result.profile.timeDeltas?.[index] ?? 0) / 1_000
+        self.set(id, (self.get(id) ?? 0) + duration)
+      })
+      console.log(
+        "timeline cpu profile",
+        JSON.stringify(
+          result.profile.nodes
+            .map((node) => ({
+              function: node.callFrame.functionName || "(anonymous)",
+              url: node.callFrame.url,
+              line: node.callFrame.lineNumber + 1,
+              selfMs: self.get(node.id) ?? 0,
+            }))
+            .filter((node) => node.selfMs > 1)
+            .sort((a, b) => b.selfMs - a.selfMs)
+            .slice(0, 40),
+        ),
+      )
+    },
+    async reset() {
+      if (options.cpuThrottle > 1) await cdp.send("Emulation.setCPUThrottlingRate", { rate: 1 })
+    },
+  }
+}

packages/app/e2e/performance/timeline/session-timeline-stream-probe.ts

@@ -0,0 +1,547 @@
+import type { Page } from "@playwright/test"
+
+const STREAM_MARKER_PATTERN = "stream-(\\d+)"
+const STREAM_FRAGMENT_COUNT = 18
+
+type TimelineProbeState = {
+  started: number
+  ended: number
+  profileVisual: boolean
+  minimal: boolean
+  frames: number[]
+  frameAt: number[]
+  applied: { at: number; index: number }[]
+  geometry: {
+    scrollTop: number
+    scrollHeight: number
+    clientHeight: number
+    distance: number
+    virtualHeight: number
+    headerHeight: number
+  }[]
+  blanks: number
+  longTasks: number[]
+  layoutShifts: number[]
+  visibleMounts: number
+  visibleUnmounts: number
+  visibleRows: Set<Element>
+  visibleSubtreeMounts: string[]
+  visibleSubtreeUnmounts: string[]
+  visibleSubtreeReplacements: number
+  visibleSubtreeDropouts: string[]
+  visibleSubtrees: Map<string, Element>
+  subtreeKeys: WeakMap<Element, string>
+  maxOverlap: number
+  maxGap: number
+  maxPartTopMovement: number
+  previousPartTop: number
+  slowFrames: {
+    duration: number
+    index: number
+    phase: "stream" | "boundary" | "complete" | "unknown"
+    tokenSpans: number
+    blocks: number
+    codeBlocks: number
+    height: number
+    distance: number
+  }[]
+  scroll: {
+    calls: number
+    callNoops: number
+    sameFrameCalls: number
+    assignments: number
+    assignmentNoops: number
+    lastCallFrame: number
+    frame: number
+  }
+  row: HTMLElement
+  markdown: HTMLElement
+  running: boolean
+  previous: number
+  cleanup: () => void
+  start: () => void
+}
+
+export async function installTimelineStreamProbe(
+  page: Page,
+  options: { textPartID: string; finalIndex: number; profileVisual: boolean; minimal: boolean },
+) {
+  await page.evaluate(
+    ({ textPartID, finalIndex, profileVisual, minimal, markerPattern, fragmentCount }) => {
+      const part = document.querySelector<HTMLElement>(`[data-timeline-part-id="${textPartID}"]`)
+      const row = part?.closest<HTMLElement>("[data-timeline-row]")
+      const markdown = part?.querySelector<HTMLElement>('[data-component="markdown"]')
+      const root = part?.closest<HTMLElement>(".scroll-view__viewport")
+      if (!part || !row || !markdown || !root) throw new Error("missing streaming benchmark nodes")
+      const viewport = root.getBoundingClientRect()
+      const state: TimelineProbeState = {
+        started: 0,
+        ended: Infinity,
+        profileVisual,
+        minimal,
+        frames: [],
+        frameAt: [],
+        applied: [],
+        geometry: [],
+        blanks: 0,
+        longTasks: [],
+        layoutShifts: [],
+        visibleMounts: 0,
+        visibleUnmounts: 0,
+        visibleRows: new Set(
+          [...root.querySelectorAll("[data-timeline-key]")].filter((element) => {
+            const rect = element.getBoundingClientRect()
+            return rect.bottom > viewport.top && rect.top < viewport.bottom
+          }),
+        ),
+        visibleSubtreeMounts: [],
+        visibleSubtreeUnmounts: [],
+        visibleSubtreeReplacements: 0,
+        visibleSubtreeDropouts: [],
+        visibleSubtrees: new Map<string, Element>(),
+        subtreeKeys: new WeakMap<Element, string>(),
+        maxOverlap: 0,
+        maxGap: 0,
+        maxPartTopMovement: 0,
+        previousPartTop: part.getBoundingClientRect().top,
+        slowFrames: [],
+        scroll: {
+          calls: 0,
+          callNoops: 0,
+          sameFrameCalls: 0,
+          assignments: 0,
+          assignmentNoops: 0,
+          lastCallFrame: -1,
+          frame: 0,
+        },
+        row,
+        markdown,
+        running: false,
+        previous: 0,
+        cleanup: () => {},
+        start: () => {},
+      }
+      ;(window as Window & { __timelineStreamBenchmark?: TimelineProbeState }).__timelineStreamBenchmark = state
+      const scrollTo = Element.prototype.scrollTo
+      const scrollTop = Object.getOwnPropertyDescriptor(Element.prototype, "scrollTop")!
+      if (profileVisual) {
+        Element.prototype.scrollTo = function (...args) {
+          state.scroll.calls += 1
+          const top = typeof args[0] === "object" ? args[0]?.top : args[1]
+          if (typeof top === "number") {
+            const target = Math.min(top, this.scrollHeight - this.clientHeight)
+            if (Math.abs(this.scrollTop - target) < 1) state.scroll.callNoops += 1
+          }
+          if (state.scroll.lastCallFrame === state.scroll.frame) state.scroll.sameFrameCalls += 1
+          state.scroll.lastCallFrame = state.scroll.frame
+          return scrollTo.apply(this, args)
+        }
+        Object.defineProperty(Element.prototype, "scrollTop", {
+          configurable: true,
+          get: scrollTop.get,
+          set(value) {
+            state.scroll.assignments += 1
+            if (Math.abs(this.scrollTop - value) < 1) state.scroll.assignmentNoops += 1
+            scrollTop.set!.call(this, value)
+          },
+        })
+      }
+
+      const recordLongTasks = (entries: PerformanceEntry[]) => {
+        if (!state.running) return
+        state.longTasks.push(
+          ...entries
+            .filter((entry) => entry.startTime >= state.started && entry.startTime <= state.ended)
+            .map((entry) => entry.duration),
+        )
+      }
+      const longTaskObserver = new PerformanceObserver((list) => recordLongTasks(list.getEntries()))
+      longTaskObserver.observe({ type: "longtask" })
+      const recordLayoutShifts = (entries: PerformanceEntry[]) => {
+        if (!state.running) return
+        state.layoutShifts.push(
+          ...entries
+            .map((entry) => {
+              const shift = entry as LayoutShiftEntry
+              if (shift.startTime < state.started || shift.hadRecentInput) return
+              return shift.value
+            })
+            .filter((value): value is number => value !== undefined),
+        )
+      }
+      const layoutShiftObserver = profileVisual
+        ? new PerformanceObserver((list) => recordLayoutShifts(list.getEntries()))
+        : undefined
+      layoutShiftObserver?.observe({ type: "layout-shift", buffered: true })
+
+      const visible = (element: Element) => {
+        const rect = element.getBoundingClientRect()
+        const viewport = root.getBoundingClientRect()
+        const style = getComputedStyle(element)
+        return (
+          element.isConnected &&
+          rect.width > 0 &&
+          rect.height > 0 &&
+          rect.bottom > viewport.top &&
+          rect.top < viewport.bottom &&
+          style.display !== "none" &&
+          style.visibility !== "hidden" &&
+          Number(style.opacity) > 0
+        )
+      }
+      const critical = [
+        "[data-timeline-part-id]",
+        '[data-component="edit-content"]',
+        '[data-component="apply-patch-file-diff"]',
+        '[data-component="file"]',
+        '[data-component="markdown-code"]',
+        "[data-markdown-block]",
+      ].join(",")
+      const describe = (element: Element) => {
+        const cached = state.subtreeKeys.get(element)
+        if (!element.isConnected && cached) return cached
+        const part = element.closest<HTMLElement>("[data-timeline-part-id]")?.dataset.timelinePartId ?? "unknown"
+        const block = element
+          .closest<HTMLElement>("[data-markdown-key]")
+          ?.dataset.markdownKey?.replace(/:(?:code|full|live)$/, "")
+        const component =
+          element.getAttribute("data-component") ?? element.getAttribute("data-markdown-block") ?? element.tagName
+        const key = `${part}:${block ?? "root"}:${component}`
+        state.subtreeKeys.set(element, key)
+        return key
+      }
+      const recordMutations = (records: MutationRecord[]) => {
+        if (!state.running) return
+        records.forEach((record) => {
+          record.addedNodes.forEach((node) => {
+            if (node instanceof HTMLElement && node.matches("[data-timeline-key]") && visible(node)) {
+              state.visibleMounts += 1
+              state.visibleRows.add(node)
+            }
+            if (!(node instanceof Element)) return
+            const added = [node, ...node.querySelectorAll(critical)].filter((element) => element.matches(critical))
+            added.forEach((element) => {
+              if (visible(element)) state.visibleSubtreeMounts.push(describe(element))
+            })
+          })
+          record.removedNodes.forEach((node) => {
+            if (node instanceof HTMLElement && node.matches("[data-timeline-key]") && state.visibleRows.delete(node))
+              state.visibleUnmounts += 1
+            if (!(node instanceof Element)) return
+            const removed = [node, ...node.querySelectorAll(critical)].filter((element) => element.matches(critical))
+            removed.forEach((element) => {
+              const key = describe(element)
+              if (state.visibleSubtrees.get(key) === element) state.visibleSubtreeUnmounts.push(key)
+            })
+          })
+        })
+      }
+      const mutationObserver = profileVisual ? new MutationObserver(recordMutations) : undefined
+      mutationObserver?.observe(root, { childList: true, subtree: true })
+      const currentPart = () => root.querySelector<HTMLElement>(`[data-timeline-part-id="${textPartID}"]`)
+      const observeProgress = (at: number) => {
+        if (!state.running) return
+        const content = currentPart()?.textContent ?? ""
+        const index = content.includes("benchmark-complete")
+          ? finalIndex
+          : Number(content.match(new RegExp(markerPattern, "g"))?.at(-1)?.match(/\d+/)?.[0] ?? -1)
+        if (index >= 0 && index !== state.applied.at(-1)?.index) state.applied.push({ at, index })
+      }
+      const progressObserver = new MutationObserver(() => observeProgress(performance.now()))
+      progressObserver.observe(root, { characterData: true, childList: true, subtree: true })
+      state.cleanup = () => {
+        recordLongTasks(longTaskObserver.takeRecords())
+        recordLayoutShifts(layoutShiftObserver?.takeRecords() ?? [])
+        recordMutations(mutationObserver?.takeRecords() ?? [])
+        if (progressObserver.takeRecords().length) observeProgress(performance.now())
+        longTaskObserver.disconnect()
+        layoutShiftObserver?.disconnect()
+        mutationObserver?.disconnect()
+        progressObserver.disconnect()
+        if (!profileVisual) return
+        Element.prototype.scrollTo = scrollTo
+        Object.defineProperty(Element.prototype, "scrollTop", scrollTop)
+      }
+
+      const sample = (now: number) => {
+        if (!state.running) return
+        state.frameAt.push(now)
+        observeProgress(now)
+        if (minimal) {
+          state.frames.push(now - state.previous)
+          state.previous = now
+          requestAnimationFrame(sample)
+          return
+        }
+        setTimeout(() => {
+          if (!state.running) return
+          state.scroll.frame += 1
+          const duration = now - state.previous
+          state.frames.push(duration)
+          state.previous = now
+          const virtualRoot = root.querySelector<HTMLElement>("[data-timeline-virtual-content]")
+          const header = root.querySelector<HTMLElement>("[data-session-title]")
+          state.geometry.push({
+            scrollTop: root.scrollTop,
+            scrollHeight: root.scrollHeight,
+            clientHeight: root.clientHeight,
+            distance: root.scrollHeight - root.clientHeight - root.scrollTop,
+            virtualHeight: virtualRoot?.getBoundingClientRect().height ?? 0,
+            headerHeight: header?.getBoundingClientRect().height ?? 0,
+          })
+          const viewport = root.getBoundingClientRect()
+          if (profileVisual) {
+            const visibleRows = [...root.querySelectorAll<HTMLElement>("[data-timeline-key]")]
+              .map((element) => ({ element, rect: element.getBoundingClientRect() }))
+              .filter((item) => item.rect.bottom > viewport.top && item.rect.top < viewport.bottom)
+              .sort((a, b) => a.rect.top - b.rect.top)
+            state.visibleRows = new Set(visibleRows.map((item) => item.element))
+            const rows = visibleRows.map((item) => item.rect)
+            rows.slice(1).forEach((rect, index) => {
+              const previous = rows[index]!
+              state.maxOverlap = Math.max(state.maxOverlap, previous.bottom - rect.top)
+              state.maxGap = Math.max(state.maxGap, rect.top - previous.bottom)
+            })
+            const partTop = part.getBoundingClientRect().top
+            state.maxPartTopMovement = Math.max(state.maxPartTopMovement, Math.abs(partTop - state.previousPartTop))
+            state.previousPartTop = partTop
+          }
+          const visibleRow = [...root.querySelectorAll<HTMLElement>("[data-timeline-row]")].some((element) => {
+            const rect = element.getBoundingClientRect()
+            return rect.bottom > viewport.top && rect.top < viewport.bottom
+          })
+          if (!visibleRow) state.blanks += 1
+          if (profileVisual) {
+            const subtrees = new Map<string, { element: Element; rendered: boolean }>()
+            const visibleSubtrees = new Map<string, Element>()
+            root.querySelectorAll(critical).forEach((element) => {
+              const key = describe(element)
+              const rect = element.getBoundingClientRect()
+              const style = getComputedStyle(element)
+              const rendered =
+                element.isConnected &&
+                rect.width > 0 &&
+                rect.height > 0 &&
+                style.display !== "none" &&
+                style.visibility !== "hidden" &&
+                Number(style.opacity) > 0
+              subtrees.set(key, { element, rendered })
+              if (rendered && rect.bottom > viewport.top && rect.top < viewport.bottom) {
+                const previous = state.visibleSubtrees.get(key)
+                if (previous && previous !== element && key.startsWith(`${textPartID}:`))
+                  state.visibleSubtreeReplacements += 1
+                visibleSubtrees.set(key, element)
+              }
+            })
+            state.visibleSubtrees.forEach((element, key) => {
+              const current = subtrees.get(key)
+              if (key.startsWith(`${textPartID}:`) && !current?.rendered) {
+                const markdown = part.querySelector<HTMLElement>('[data-component="markdown"]')
+                state.visibleSubtreeDropouts.push(
+                  `${key}:projection=${markdown?.dataset.markdownProjectionLength}/${markdown?.dataset.markdownProjectionBlocks}:result=${markdown?.dataset.markdownResultLength}/${markdown?.dataset.markdownResultBlocks}:applied=${markdown?.dataset.markdownAppliedBlocks}:dom=${markdown?.children.length}`,
+                )
+              }
+              if (element.matches('[data-component="file"]')) {
+                const hadLines = element.hasAttribute("data-profiler-had-lines")
+                const hasLines = element.shadowRoot?.querySelector("[data-line]") != null
+                if (hasLines) element.setAttribute("data-profiler-had-lines", "")
+                if (hadLines && !hasLines) state.visibleSubtreeDropouts.push(`${key}:shadow-lines`)
+              }
+            })
+            state.visibleSubtrees = visibleSubtrees
+          }
+          if (profileVisual && duration > 33.34) {
+            const livePart = currentPart()
+            const content = livePart?.textContent ?? ""
+            const complete = content.includes("benchmark-complete")
+            const index = complete
+              ? finalIndex
+              : Number(content.match(new RegExp(markerPattern, "g"))?.at(-1)?.match(/\d+/)?.[0] ?? -1)
+            state.slowFrames.push({
+              duration,
+              index,
+              phase: complete
+                ? "complete"
+                : index >= 0 && index % fragmentCount === 0
+                  ? "boundary"
+                  : index >= 0
+                    ? "stream"
+                    : "unknown",
+              tokenSpans: livePart?.querySelectorAll(".shiki span").length ?? 0,
+              blocks: livePart?.querySelectorAll("[data-markdown-block]").length ?? 0,
+              codeBlocks: livePart?.querySelectorAll('[data-component="markdown-code"]').length ?? 0,
+              height: livePart?.getBoundingClientRect().height ?? 0,
+              distance: root.scrollHeight - root.clientHeight - root.scrollTop,
+            })
+          }
+          requestAnimationFrame(sample)
+        }, 0)
+      }
+      state.start = () => {
+        state.started = performance.now()
+        state.previous = state.started
+        state.running = true
+        requestAnimationFrame(sample)
+      }
+    },
+    { ...options, markerPattern: STREAM_MARKER_PATTERN, fragmentCount: STREAM_FRAGMENT_COUNT },
+  )
+}
+
+export function startTimelineStreamProbe(page: Page) {
+  return page.evaluate(() => {
+    const state = (window as Window & { __timelineStreamBenchmark?: TimelineProbeState }).__timelineStreamBenchmark
+    if (!state) throw new Error("missing streaming benchmark state")
+    state.start()
+  })
+}
+
+type LayoutShiftEntry = PerformanceEntry & { value: number; hadRecentInput?: boolean }
+
+export function layoutShiftValue(
+  entry: Pick<LayoutShiftEntry, "startTime" | "value" | "hadRecentInput">,
+  start: number,
+) {
+  if (entry.startTime < start || entry.hadRecentInput) return
+  return entry.value
+}
+
+export function removeVisibleRow<T>(visible: Set<T>, row: T) {
+  return visible.delete(row)
+}
+
+export function streamProgress(content: string) {
+  const index = Number(content.match(new RegExp(STREAM_MARKER_PATTERN, "g"))?.at(-1)?.match(/\d+/)?.[0] ?? -1)
+  return {
+    index,
+    phase: content.includes("benchmark-complete")
+      ? ("complete" as const)
+      : index >= 0 && index % STREAM_FRAGMENT_COUNT === 0
+        ? ("boundary" as const)
+        : index >= 0
+          ? ("stream" as const)
+          : ("unknown" as const),
+  }
+}
+
+export async function collectTimelineStreamMetrics(
+  page: Page,
+  options: { textPartID: string; finalIndex: number; navigations: string[] },
+) {
+  return page.evaluate(({ textPartID, finalIndex, navigations }) => {
+    const state = (window as Window & { __timelineStreamBenchmark?: TimelineProbeState }).__timelineStreamBenchmark
+    if (!state) throw new Error(`missing streaming benchmark state after navigation: ${JSON.stringify(navigations)}`)
+    state.ended = performance.now()
+    state.cleanup()
+    state.running = false
+    const part = document.querySelector<HTMLElement>(`[data-timeline-part-id="${textPartID}"]`)
+    const row = part?.closest<HTMLElement>("[data-timeline-row]")
+    const markdown = part?.querySelector<HTMLElement>('[data-component="markdown"]')
+    const sorted = state.frames.slice().sort((a, b) => a - b)
+    const duration = state.frames.reduce((sum, value) => sum + value, 0)
+    const longestSlowStreak = state.frames.reduce(
+      (result, value) => {
+        const current = value > 33.34 ? result.current + 1 : 0
+        return { current, longest: Math.max(result.longest, current) }
+      },
+      { current: 0, longest: 0 },
+    ).longest
+    const busyStart = state.applied.at(0)?.at
+    const completion = state.applied.find((value) => value.index === finalIndex)
+    const busyEnd = completion?.at
+    const busyFrames =
+      busyStart === undefined || busyEnd === undefined
+        ? []
+        : state.frames.filter((_, index) => state.frameAt[index]! >= busyStart && state.frameAt[index]! <= busyEnd)
+    const busySorted = busyFrames.slice().sort((a, b) => a - b)
+    const busyDuration = busyFrames.reduce((sum, value) => sum + value, 0)
+    const completionObservedMs = (completion?.at ?? NaN) - state.started
+    const visual = state.profileVisual
+      ? {
+          layoutShiftValueSum: state.layoutShifts.reduce((sum, value) => sum + value, 0),
+          maxLayoutShiftValue: Math.max(0, ...state.layoutShifts),
+          visibleMounts: state.visibleMounts,
+          visibleUnmounts: state.visibleUnmounts,
+          visibleSubtreeMounts: state.visibleSubtreeMounts,
+          visibleSubtreeUnmounts: [...new Set(state.visibleSubtreeUnmounts)],
+          visibleSubtreeReplacements: state.visibleSubtreeReplacements,
+          visibleSubtreeDropouts: [...new Set(state.visibleSubtreeDropouts)],
+          maxOverlapPx: state.maxOverlap,
+          maxGapPx: state.maxGap,
+          maxPartTopMovementPx: state.maxPartTopMovement,
+          slowestRafGaps: state.slowFrames
+            .sort((a, b) => b.duration - a.duration)
+            .slice(0, 20)
+            .map((frame) => ({
+              durationMs: frame.duration,
+              index: frame.index,
+              phase: frame.phase,
+              tokenSpans: frame.tokenSpans,
+              blocks: frame.blocks,
+              codeBlocks: frame.codeBlocks,
+              heightPx: frame.height,
+              distancePx: frame.distance,
+            })),
+          slowRafGapPhases: Object.fromEntries(
+            ["stream", "boundary", "complete", "unknown"].map((phase) => {
+              const frames = state.slowFrames.filter((frame) => frame.phase === phase)
+              return [
+                phase,
+                {
+                  count: frames.length,
+                  totalMs: frames.reduce((sum, frame) => sum + frame.duration, 0),
+                  maxMs: Math.max(0, ...frames.map((frame) => frame.duration)),
+                },
+              ]
+            }),
+          ),
+          scroll: state.scroll,
+        }
+      : null
+    const geometry = state.minimal
+      ? null
+      : {
+          maxDistancePx: Math.max(0, ...state.geometry.map((sample) => sample.distance)),
+          finalDistancePx: state.geometry.at(-1)?.distance ?? 0,
+          final: state.geometry.at(-1),
+          distanceTransitionsPx: state.geometry
+            .map((sample) => Math.round(sample.distance))
+            .filter((value, index, values) => index === 0 || value !== values[index - 1]),
+          bottomDriftTransitions: state.geometry.slice(1).filter((value, index) => {
+            const previous = state.geometry[index]?.distance ?? 0
+            return previous <= 1 && value.distance > 1
+          }).length,
+          blankSamples: state.blanks,
+        }
+    return {
+      capabilities: { visual: state.profileVisual, geometry: !state.minimal },
+      completionObservedMs,
+      deltasPerSecond: Number.isFinite(completionObservedMs) ? finalIndex / (completionObservedMs / 1_000) : null,
+      rafGapSamples: state.frames.length,
+      rafCallbackRate: duration ? (state.frames.length * 1000) / duration : 0,
+      observedProgressWindowRafCallbackRate: busyDuration ? (busyFrames.length * 1000) / busyDuration : null,
+      observedProgressWindowRafGapP95Ms: busySorted[Math.floor(busySorted.length * 0.95)] ?? null,
+      observedProgressWindowRafGaps: busyFrames.length,
+      maxObservedProgressIndex: Math.max(-1, ...state.applied.map((value) => value.index)),
+      observedProgressTransitions: state.applied.length,
+      rafGapP50Ms: sorted[Math.floor(sorted.length * 0.5)] ?? 0,
+      rafGapP95Ms: sorted[Math.floor(sorted.length * 0.95)] ?? 0,
+      rafGapP99Ms: sorted[Math.floor(sorted.length * 0.99)] ?? 0,
+      maxRafGapMs: sorted.at(-1) ?? 0,
+      rafGapsOver33Ms: state.frames.filter((value) => value > 33.34).length,
+      rafGapsOver50Ms: state.frames.filter((value) => value > 50).length,
+      missedFrameBudgetEquivalents: state.frames.reduce(
+        (sum, value) => sum + Math.max(0, Math.round(value / 16.67) - 1),
+        0,
+      ),
+      longestRafGapOver33MsStreak: longestSlowStreak,
+      longTaskCount: state.longTasks.length,
+      longTaskTimeMs: state.longTasks.reduce((sum, value) => sum + value, 0),
+      visual,
+      geometry,
+      rowReplaced: row !== state.row,
+      markdownReplaced: markdown !== state.markdown,
+      domTextCharacters: part?.textContent?.length ?? 0,
+    }
+  }, options)
+}

packages/app/e2e/performance/timeline/session-timeline-stress.fixture.ts

@@ -0,0 +1,335 @@
+const words = [
+  "alpha",
+  "bravo",
+  "charlie",
+  "delta",
+  "echo",
+  "foxtrot",
+  "golf",
+  "hotel",
+  "india",
+  "juliet",
+  "kilo",
+  "lima",
+  "metro",
+  "nova",
+  "orbit",
+  "pixel",
+  "quartz",
+  "river",
+  "signal",
+  "vector",
+]
+
+const sourceID = "ses_smoke_source"
+const targetID = "ses_smoke_target"
+const directory = "C:/OpenCode/SmokeProject"
+const projectID = "proj_smoke_timeline"
+const model = { providerID: "opencode", modelID: "claude-opus-4-6", variant: "max" }
+
+type MessageInfo = Record<string, unknown> & { id: string; role: "user" | "assistant" }
+type MessagePart = Record<string, unknown> & { id: string; type: string; text?: string; tool?: string }
+type Message = { info: MessageInfo; parts: MessagePart[] }
+
+function lorem(seed: number, length: number) {
+  let out = ""
+  let i = seed
+  while (out.length < length) {
+    const word = words[i % words.length]
+    out += (out ? " " : "") + word
+    if (i % 17 === 0) out += ".\n\n"
+    i += 7
+  }
+  return out.slice(0, length)
+}
+
+function id(prefix: string, value: number) {
+  return `${prefix}_smoke_${String(value).padStart(4, "0")}`
+}
+
+function userMessage(sessionID: string, index: number, textLength: number, diffs: unknown[] = []): Message {
+  const messageID = id("msg_user", index)
+  return {
+    info: {
+      id: messageID,
+      sessionID,
+      role: "user",
+      time: { created: 1700000000000 + index * 10_000 },
+      summary: { diffs },
+      agent: "build",
+      model,
+    },
+    parts: [
+      {
+        id: id("prt_user_text", index),
+        sessionID,
+        messageID,
+        type: "text",
+        text: lorem(index, textLength),
+      },
+    ],
+  }
+}
+
+function assistantMessage(sessionID: string, index: number, parentID: string, parts: MessagePart[]): Message {
+  const messageID = id("msg_assistant", index)
+  return {
+    info: {
+      id: messageID,
+      sessionID,
+      role: "assistant",
+      time: { created: 1700000000000 + index * 10_000 + 1_000, completed: 1700000000000 + index * 10_000 + 8_000 },
+      parentID,
+      modelID: model.modelID,
+      providerID: model.providerID,
+      mode: "build",
+      agent: "build",
+      path: { cwd: directory, root: directory },
+      cost: 0.01,
+      tokens: { input: 100, output: 200, reasoning: 0, cache: { read: 0, write: 0 } },
+      variant: "max",
+      finish: "stop",
+    },
+    parts: parts.map((part) => ({
+      ...part,
+      sessionID,
+      messageID,
+    })),
+  }
+}
+
+function textPart(index: number, partIndex: number, length: number): MessagePart {
+  const prose = lorem(index * 13 + partIndex, length)
+  const text =
+    index % 12 === 0
+      ? `${prose}\n\n\`\`\`ts\n${code(index, 80)}\n\`\`\``
+      : index % 5 === 0
+        ? `${prose}\n\n\`\`\`ts\nexport const value = "${lorem(index, 220)}"\n\`\`\``
+        : index % 7 === 0
+          ? `${prose}\n\nThe wrapped inline value is \`${lorem(index, 180)}\`.`
+          : prose
+  return { id: id(`prt_text_${partIndex}`, index), type: "text", text }
+}
+
+function reasoningPart(index: number, partIndex: number, length: number): MessagePart {
+  return {
+    id: id(`prt_reasoning_${partIndex}`, index),
+    type: "reasoning",
+    text: lorem(index * 19 + partIndex, length),
+    time: { start: 1700000000000 + index * 10_000, end: 1700000000000 + index * 10_000 + 500 },
+  }
+}
+
+function toolPart(
+  index: number,
+  partIndex: number,
+  tool: string,
+  input: Record<string, unknown>,
+  outputLength = 160,
+): MessagePart {
+  const metadata =
+    tool === "apply_patch"
+      ? { files: [patchFile(index, "update"), patchFile(index + 1, index % 2 === 0 ? "add" : "delete")] }
+      : tool === "edit" || tool === "write"
+        ? {
+            filediff: fileDiff(String(input.filePath ?? `src/generated/file-${index}.ts`), index),
+            diff: patch(index, outputLength),
+            preview: patch(index + 1, 420),
+          }
+        : tool === "question"
+          ? { answers: [["Proceed"], ["Keep sample output"]] }
+          : {}
+  return {
+    id: id(`prt_tool_${tool}_${partIndex}`, index),
+    type: "tool",
+    callID: id("call", index * 10 + partIndex),
+    tool,
+    state: {
+      status: "completed",
+      input,
+      output: lorem(index * 23 + partIndex, outputLength),
+      title: tool === "bash" ? "Verify generated output" : input.filePath || input.path || input.pattern || "completed",
+      metadata,
+      time: { start: 1700000000000 + index * 10_000, end: 1700000000000 + index * 10_000 + 400 },
+    },
+  }
+}
+
+function patchFile(seed: number, type: "add" | "update" | "delete") {
+  return {
+    filePath: `src/generated/patch-${seed}.ts`,
+    relativePath: `src/generated/patch-${seed}.ts`,
+    type,
+    additions: (seed % 7) + 1,
+    deletions: type === "add" ? 0 : seed % 4,
+    patch: patch(seed, 520),
+    before: type === "add" ? undefined : code(seed, 18),
+    after: type === "delete" ? undefined : code(seed + 1, 24),
+  }
+}
+
+function fileDiff(file: string, seed: number) {
+  const lines = seed % 12 === 0 ? 300 : seed % 8 === 0 ? 2 : 38
+  const before = code(seed, lines, seed % 10 === 0 ? 280 : 32)
+  const after =
+    lines === 2
+      ? before.replace("value1", "updatedValue1")
+      : lines === 300
+        ? code(seed + 1, lines, seed % 10 === 0 ? 280 : 32)
+        : before.replace("value4", "updatedValue4").replace("value20", "updatedValue20")
+  return {
+    file,
+    additions: lines === 300 ? 300 : lines === 2 ? 1 : 2,
+    deletions: lines === 300 ? 300 : lines === 2 ? 1 : 2,
+    before,
+    after,
+  }
+}
+
+function patch(seed: number, length: number) {
+  return `diff --git a/src/generated/file-${seed}.ts b/src/generated/file-${seed}.ts\n+${lorem(seed, length).replace(/\n/g, "\n+")}`
+}
+
+function code(seed: number, lines: number, width = 32) {
+  return Array.from(
+    { length: lines },
+    (_, index) => `export const value${index} = "${lorem(seed + index, width)}"`,
+  ).join("\n")
+}
+
+function turn(index: number): Message[] {
+  const diff = index % 9 === 0 ? [fileDiff(`src/generated/summary-${index}.ts`, index)] : []
+  const user = userMessage(targetID, index, 100 + (index % 4) * 80, diff)
+  const parts = [
+    ...(index % 5 === 0 ? [reasoningPart(index, 0, 420)] : []),
+    ...(index % 3 === 0
+      ? [
+          toolPart(index, 0, "read", { filePath: `src/generated/file-${index}.ts`, offset: 0, limit: 80 }, 220),
+          toolPart(index, 5, "glob", { path: directory, pattern: `**/*sample-${index}*.ts` }, 140),
+          toolPart(index, 1, "grep", { path: directory, pattern: `sample-${index}`, include: "*.ts" }, 180),
+          toolPart(index, 6, "list", { path: `src/generated/${index}` }, 120),
+        ]
+      : []),
+    textPart(index, 2, 160 + (index % 6) * 90),
+    ...(index % 4 === 0 ? [toolPart(index, 3, "edit", { filePath: `src/generated/file-${index}.ts` }, 700)] : []),
+    ...(index % 6 === 0
+      ? [toolPart(index, 7, "write", { filePath: `src/generated/write-${index}.ts`, content: code(index, 28) }, 560)]
+      : []),
+    ...(index % 8 === 0
+      ? [toolPart(index, 8, "apply_patch", { files: [`src/generated/patch-${index}.ts`] }, 620)]
+      : []),
+    ...(index % 7 === 0
+      ? [toolPart(index, 4, "bash", { command: "bun typecheck", description: "Verify generated output" }, 620)]
+      : []),
+    ...(index % 10 === 0 ? [toolPart(index, 9, "webfetch", { url: "https://example.com/docs/sample" }, 120)] : []),
+    ...(index % 11 === 0 ? [toolPart(index, 10, "websearch", { query: "sample movement notes" }, 240)] : []),
+    ...(index % 13 === 0
+      ? [
+          toolPart(
+            index,
+            11,
+            "question",
+            { questions: [{ question: "Use generated fixture?" }, { question: "Keep same row shape?" }] },
+            120,
+          ),
+        ]
+      : []),
+    ...(index % 17 === 0
+      ? [toolPart(index, 12, "task", { description: "Inspect generated fixture", subagent_type: "explore" }, 160)]
+      : []),
+  ]
+  return [user, assistantMessage(targetID, index, user.info.id, parts)]
+}
+
+const targetMessages = Array.from({ length: 72 }, (_, index) => turn(index)).flat()
+const sourceMessages = Array.from({ length: 12 }, (_, index) => [
+  userMessage(sourceID, index + 1000, 120),
+  assistantMessage(sourceID, index + 1000, id("msg_user", index + 1000), [textPart(index + 1000, 0, 240)]),
+]).flat()
+
+function renderable(part: MessagePart) {
+  if (part.type === "tool" && part.tool === "todowrite") return false
+  if (part.type === "text") return !!part.text.trim()
+  if (part.type === "reasoning") return !!part.text.trim()
+  return part.type !== "step-start" && part.type !== "step-finish" && part.type !== "patch"
+}
+
+function orderedParts(message: Message) {
+  return message.parts.slice().sort((a, b) => a.id.localeCompare(b.id))
+}
+
+export const fixture = {
+  directory,
+  project: {
+    id: projectID,
+    worktree: directory,
+    vcs: "git",
+    name: "smoke-project",
+    time: { created: 1700000000000, updated: 1700000000000 },
+    sandboxes: [],
+  },
+  provider: {
+    all: [
+      {
+        id: "opencode",
+        name: "OpenCode",
+        models: { "claude-opus-4-6": { id: "claude-opus-4-6", name: "Claude Opus 4.6", limit: { context: 200_000 } } },
+      },
+    ],
+    connected: ["opencode"],
+    default: { providerID: "opencode", modelID: "claude-opus-4-6" },
+  },
+  sessions: [
+    {
+      id: sourceID,
+      slug: "source",
+      projectID,
+      directory,
+      title: "Uncommitted changes inquiry",
+      version: "dev",
+      time: { created: 1700000000000, updated: 1700000000000 },
+    },
+    {
+      id: targetID,
+      slug: "target",
+      projectID,
+      directory,
+      title: "Example Game: sample jump movement & sample physics analysis",
+      version: "dev",
+      time: { created: 1700000001000, updated: 1700000001000 },
+    },
+  ],
+  sourceID,
+  targetID,
+  messages: { [sourceID]: sourceMessages, [targetID]: targetMessages },
+  expected: {
+    sourceTitle: "Uncommitted changes inquiry",
+    targetTitle: "Example Game: sample jump movement & sample physics analysis",
+    sourceMessageIDs: sourceMessages
+      .filter((message) => message.info.role === "user")
+      .map((message) => message.info.id),
+    targetMessageIDs: targetMessages
+      .filter((message) => message.info.role === "user")
+      .map((message) => message.info.id),
+    targetPartIDs: targetMessages.flatMap((message) =>
+      orderedParts(message)
+        .filter(renderable)
+        .map((part) => part.id),
+    ),
+  },
+}
+
+export function pageMessages(sessionID: string, limit: number, before?: string) {
+  const messages = fixture.messages[sessionID as keyof typeof fixture.messages] ?? []
+  const end = before
+    ? Math.max(
+        0,
+        messages.findIndex((message) => message.info.id === before),
+      )
+    : messages.length
+  const start = Math.max(0, end - limit)
+  return {
+    items: messages.slice(start, end),
+    cursor: start > 0 ? messages[start]!.info.id : undefined,
+  }
+}

packages/app/e2e/performance/timeline/timeline-test-helpers.ts

@@ -0,0 +1,67 @@
+import type { Page } from "@playwright/test"
+import { base64Encode } from "@opencode-ai/core/util/encode"
+import { mockOpenCodeServer } from "../../utils/mock-server"
+import { fixture } from "./session-timeline-stress.fixture"
+
+export async function installTimelineSettings(page: Page) {
+  await page.addInitScript(() => {
+    localStorage.setItem(
+      "settings.v3",
+      JSON.stringify({
+        general: {
+          editToolPartsExpanded: true,
+          shellToolPartsExpanded: true,
+          showReasoningSummaries: true,
+          showSessionProgressBar: true,
+        },
+      }),
+    )
+  })
+}
+
+export function mockStressTimeline(page: Page) {
+  return mockOpenCodeServer(page, {
+    sessions: fixture.sessions,
+    provider: fixture.provider,
+    directory: fixture.directory,
+    project: fixture.project,
+    pageMessages: (sessionID) => ({ items: fixture.messages[sessionID as keyof typeof fixture.messages] ?? [] }),
+  })
+}
+
+export async function installStressSessionTabs(page: Page) {
+  const server = `http://${process.env.PLAYWRIGHT_SERVER_HOST ?? "127.0.0.1"}:${process.env.PLAYWRIGHT_SERVER_PORT ?? "4096"}`
+  await page.addInitScript(
+    ({ directory, sourceID, targetID, dirBase64, server }) => {
+      localStorage.setItem(
+        "opencode.global.dat:server",
+        JSON.stringify({
+          projects: { local: [{ worktree: directory, expanded: true }] },
+          lastProject: { local: directory },
+        }),
+      )
+      localStorage.setItem(
+        "opencode.global.dat:tabs",
+        JSON.stringify(
+          [sourceID, targetID].map((sessionId) => ({
+            type: "session",
+            server,
+            dirBase64,
+            sessionId,
+          })),
+        ),
+      )
+    },
+    {
+      directory: fixture.directory,
+      sourceID: fixture.sourceID,
+      targetID: fixture.targetID,
+      dirBase64: base64Encode(fixture.directory),
+      server,
+    },
+  )
+}
+
+export function stressSessionHref(sessionID: string) {
+  return `/${base64Encode(fixture.directory)}/session/${sessionID}`
+}

packages/app/e2e/performance/unit/chrome-trace-write.test.ts

@@ -0,0 +1,15 @@
+import { expect, test } from "bun:test"
+import { mkdtemp, rm } from "node:fs/promises"
+import path from "node:path"
+import os from "node:os"
+import { prepareChromeTrace } from "../chrome-trace"
+
+test("creates the configured trace directory", async () => {
+  const root = await mkdtemp(path.join(os.tmpdir(), "opencode-trace-"))
+  try {
+    const file = await prepareChromeTrace(path.join(root, "nested", "traces"), "session/tab", false, "test")
+    expect(file).toEndWith("-session-tab-458ed9e3-test.json")
+  } finally {
+    await rm(root, { recursive: true, force: true })
+  }
+})

packages/app/e2e/performance/unit/session-tab-repaint-probe.test.ts

@@ -0,0 +1,42 @@
+import { expect, test } from "bun:test"
+import { compressCachedRepaintTrace, layoutShiftSample } from "../timeline/session-tab-repaint-probe"
+
+test("compresses repeated repaint states without losing frame samples", () => {
+  const state = {
+    root: 1,
+    scrollTop: 10,
+    scrollHeight: 20,
+    bottomErrorPx: 0,
+    last: true,
+    rows: [{ key: "row", node: 2, top: 0, bottom: 10 }],
+    mounted: 1,
+    center: "content",
+  }
+  const trace = {
+    timeOriginEpochMs: 1_000,
+    startedAtPerformanceMs: 100,
+    samples: [
+      { observedAtMs: 16, ...state, destination: ["target"], source: [] },
+      { observedAtMs: 32, ...state, destination: ["target"], source: [] },
+      { observedAtMs: 48, ...state, scrollTop: 11, destination: ["target"], source: [] },
+    ],
+    mutations: [{ observedAtMs: 20, changed: [{ type: "add", node: 2 }] }],
+    shifts: [{ occurredAtMs: 24, value: 0.1 }],
+    windowMs: 1_000,
+    running: false,
+    stop() {},
+  }
+  const compressed = compressCachedRepaintTrace(trace)
+  const samples = compressed.samples.flatMap((group) =>
+    group.observedAtMs.map((observedAtMs) => ({ observedAtMs, ...group.state })),
+  )
+
+  expect(samples).toEqual(trace.samples)
+  expect(compressed.mutations).toEqual(trace.mutations)
+  expect(compressed.shifts).toEqual(trace.shifts)
+})
+
+test("records layout shifts at occurrence time within the probe window", () => {
+  expect(layoutShiftSample({ startTime: 99, value: 0.1 }, 100)).toBeUndefined()
+  expect(layoutShiftSample({ startTime: 124, value: 0.2 }, 100)).toEqual({ occurredAtMs: 24, value: 0.2 })
+})

packages/app/e2e/performance/unit/session-tab-switch-metrics.test.ts

@@ -0,0 +1,54 @@
+import { expect, test } from "bun:test"
+import { classifySessionSwitch } from "../timeline/session-tab-switch-metrics"
+
+test("counts source and blank samples before the destination is observed", () => {
+  const result = classifySessionSwitch([
+    { observedAtMs: 16, destination: [], source: ["source"], hasVisibleRows: true, last: false },
+    { observedAtMs: 32, destination: [], source: [], hasVisibleRows: false, last: false },
+    { observedAtMs: 48, destination: ["destination"], source: [], hasVisibleRows: true, last: true, bottomErrorPx: 0 },
+    { observedAtMs: 64, destination: ["destination"], source: [], hasVisibleRows: true, last: true, bottomErrorPx: 0 },
+    { observedAtMs: 80, destination: ["destination"], source: [], hasVisibleRows: true, last: true, bottomErrorPx: 0 },
+  ])
+
+  expect(result.blankSamples).toBe(1)
+  expect(result.sourceSamples).toBe(1)
+  expect(result.unknownSamples).toBe(0)
+  expect(result.firstDestinationObservedMs).toBe(48)
+  expect(result.stableObservedMs).toBe(80)
+})
+
+test("does not classify mixed source and destination content as correct", () => {
+  const result = classifySessionSwitch([
+    {
+      observedAtMs: 16,
+      destination: ["destination"],
+      source: ["source"],
+      hasVisibleRows: true,
+      last: true,
+      bottomErrorPx: 0,
+    },
+    { observedAtMs: 32, destination: ["destination"], source: [], hasVisibleRows: true, last: true, bottomErrorPx: 0 },
+    { observedAtMs: 48, destination: ["destination"], source: [], hasVisibleRows: true, last: true, bottomErrorPx: 0 },
+    { observedAtMs: 64, destination: ["destination"], source: [], hasVisibleRows: true, last: true, bottomErrorPx: 0 },
+  ])
+
+  expect(result.firstCorrectObservedMs).toBe(32)
+  expect(result.stableObservedMs).toBe(64)
+})
+
+test("reports missing correctness without throwing", () => {
+  const result = classifySessionSwitch([
+    {
+      observedAtMs: 16,
+      destination: ["destination"],
+      source: ["source"],
+      hasVisibleRows: true,
+      last: true,
+      bottomErrorPx: 0,
+    },
+  ])
+
+  expect(result.firstDestinationObservedMs).toBe(16)
+  expect(result.firstCorrectObservedMs).toBeNull()
+  expect(result.stableObservedMs).toBeNull()
+})

packages/app/e2e/performance/unit/session-timeline-stream-probe.test.ts

@@ -0,0 +1,14 @@
+import { expect, test } from "bun:test"
+import { streamChunk } from "../timeline/session-timeline-benchmark.fixture"
+import { streamProgress } from "../timeline/session-timeline-stream-probe"
+
+test("classifies emitted stream markers using the fixture cycle", () => {
+  expect(streamProgress("before stream-17 after stream-18")).toEqual({ index: 18, phase: "boundary" })
+  expect(streamProgress("before stream-18 after stream-19")).toEqual({ index: 19, phase: "stream" })
+  expect(streamProgress("benchmark-complete stream-36")).toEqual({ index: 36, phase: "complete" })
+  expect(streamProgress("no marker")).toEqual({ index: -1, phase: "unknown" })
+})
+
+test("emits progress markers at fixture boundaries", () => {
+  expect(streamProgress(streamChunk(18, 160))).toEqual({ index: 18, phase: "boundary" })
+})

packages/app/e2e/performance/unit/session-timeline-visual-tracking.test.ts

@@ -0,0 +1,16 @@
+import { expect, test } from "bun:test"
+import { layoutShiftValue, removeVisibleRow } from "../timeline/session-timeline-stream-probe"
+
+test("excludes layout shifts before the probe window and recent input", () => {
+  expect(layoutShiftValue({ startTime: 9, value: 0.1 }, 10)).toBeUndefined()
+  expect(layoutShiftValue({ startTime: 10, value: 0.2, hadRecentInput: true }, 10)).toBeUndefined()
+  expect(layoutShiftValue({ startTime: 11, value: 0.3 }, 10)).toBe(0.3)
+})
+
+test("classifies removed rows from their last painted visibility", () => {
+  const row = {}
+  const visible = new Set([row])
+
+  expect(removeVisibleRow(visible, row)).toBe(true)
+  expect(removeVisibleRow(visible, row)).toBe(false)
+})

packages/app/e2e/regression/prompt-thinking-level.spec.ts

@@ -0,0 +1,87 @@
+import { expect, test, type Page } from "@playwright/test"
+import { base64Encode } from "@opencode-ai/core/util/encode"
+import { mockOpenCodeServer } from "../utils/mock-server"
+import { expectAppVisible } from "../utils/waits"
+
+const directory = "C:/OpenCode/PromptThinkingLevelRegression"
+const projectID = "proj_prompt_thinking_level_regression"
+const sessionID = "ses_prompt_thinking_level_regression"
+
+test("shows the V2 thinking level control while relevant", async ({ page }) => {
+  await mockOpenCodeServer(page, {
+    directory,
+    project: {
+      id: projectID,
+      worktree: directory,
+      vcs: "git",
+      name: "prompt-thinking-level-regression",
+      time: { created: 1700000000000, updated: 1700000000000 },
+      sandboxes: [],
+    },
+    provider: {
+      all: [
+        {
+          id: "opencode",
+          name: "OpenCode",
+          models: {
+            "thinking-model": {
+              id: "thinking-model",
+              name: "Thinking Model",
+              limit: { context: 200_000 },
+              variants: { high: {} },
+            },
+          },
+        },
+      ],
+      connected: ["opencode"],
+      default: { providerID: "opencode", modelID: "thinking-model" },
+    },
+    sessions: [
+      {
+        id: sessionID,
+        slug: "prompt-thinking-level-regression",
+        projectID,
+        directory,
+        title: "Prompt thinking level regression",
+        version: "dev",
+        time: { created: 1700000000000, updated: 1700000000000 },
+      },
+    ],
+    pageMessages: () => ({ items: [] }),
+  })
+  await page.addInitScript(() => {
+    localStorage.setItem("settings.v3", JSON.stringify({ general: { newLayoutDesigns: true } }))
+  })
+
+  await page.goto(`/${base64Encode(directory)}/session/${sessionID}`)
+  const composer = page.locator('[data-component="session-composer"]')
+  const input = composer.locator('[data-component="prompt-input"]')
+  const control = composer.locator('[data-component="prompt-variant-control"]')
+  await expectAppVisible(composer)
+
+  await idleComposer(page)
+  await expect(control).toBeHidden()
+
+  await composer.hover()
+  await expect(control).toBeVisible()
+
+  await control.locator('[data-action="prompt-model-variant"]').click()
+  const high = page.getByRole("option", { name: "high" })
+  await expect(high).toBeVisible()
+  await page.mouse.move(0, 0)
+  await expect(control).toBeVisible()
+  await expect(high).toBeVisible()
+  await high.click()
+
+  await idleComposer(page)
+  await input.focus()
+  await expect(control).toBeVisible()
+
+  await idleComposer(page)
+  await expect(control).toBeVisible()
+})
+
+async function idleComposer(page: Page) {
+  await page.mouse.move(0, 0)
+  await page.evaluate(() => (document.activeElement as HTMLElement | null)?.blur())
+}

packages/app/e2e/regression/session-list-path-loading.spec.ts

@@ -1,6 +1,7 @@
-import { expect, test } from "@playwright/test"
+import { test } from "@playwright/test"
 import { fixture, pageMessages } from "../smoke/session-timeline.fixture"
 import { mockOpenCodeServer } from "../utils/mock-server"
+import { expectAppVisible } from "../utils/waits"
 
 test("shows loaded sessions before the directory path request resolves", async ({ page }) => {
   await mockOpenCodeServer(page, {
@@ -33,7 +34,7 @@ test("shows loaded sessions before the directory path request resolves", async (
 
   await page.goto("/")
   try {
-    await expect(page.getByText(fixture.expected.sourceTitle).first()).toBeVisible({ timeout: 5_000 })
+    await expectAppVisible(page.getByText(fixture.expected.sourceTitle).first())
   } finally {
     releasePath()
   }

packages/app/e2e/regression/session-timeline-collapse-state.spec.ts

@@ -1,5 +1,6 @@
 import { expect, test, type Locator, type Page } from "@playwright/test"
 import { mockOpenCodeServer } from "../utils/mock-server"
+import { expectAppVisible, expectSessionTitle } from "../utils/waits"
 
 const directory = "C:/OpenCode/TimelineStateRegression"
 const projectID = "proj_timeline_state_regression"
@@ -106,10 +107,10 @@ test.describe("regression: session timeline local row state", () => {
     await configurePage(page)
 
     await page.goto(`/${base64Encode(directory)}/session/${sessionID}`)
-    await expect(page.getByRole("heading", { name: title })).toBeVisible()
+    await expectSessionTitle(page, title)
 
     const wrapper = page.locator(`[data-timeline-part-id="${editPartID}"]`).first()
-    await expect(wrapper).toBeVisible()
+    await expectAppVisible(wrapper)
     await expectExpanded(wrapper, true)
 
     await wrapper.evaluate((element) => {
@@ -142,11 +143,12 @@ test.describe("regression: session timeline local row state", () => {
     await configurePage(page)
 
     await page.goto(`/${base64Encode(directory)}/session/${sessionID}`)
-    await expect(page.getByRole("heading", { name: title })).toBeVisible()
+    await expectSessionTitle(page, title)
 
     const wrapper = page.locator(`[data-timeline-part-id="${editPartID}"]`).first()
-    await expect(wrapper).toBeVisible()
-    await expect(wrapper.locator('[data-component="file"][data-mode="diff"]').first()).toBeVisible()
+    await expectAppVisible(wrapper)
+    const file = wrapper.locator('[data-component="file"][data-mode="diff"]').first()
+    await expectAppVisible(file)
     await markDiffProbe(page)
 
     events.push({
@@ -158,7 +160,15 @@ test.describe("regression: session timeline local row state", () => {
     })
 
     await expect(page.locator(`[data-timeline-part-id="${textPartID}"]`).first()).toBeVisible({ timeout: 10_000 })
-    expect(await readDiffProbe(page)).toEqual({ fileMarker: "before", shadowRoots: 0, toolMarker: "before" })
+    const siblingProbe = await readDiffProbe(page)
+    expect(siblingProbe).toEqual({
+      fileMarker: "before",
+      frameMarker: "before",
+      rowKey: `assistant-part:${userMessageID}:part:${assistantMessageID}:${editPartID}`,
+      rowMarker: "before",
+      shadowRoots: 0,
+      toolMarker: "before",
+    })
 
     await markDiffProbe(page)
     events.push({
@@ -172,7 +182,73 @@ test.describe("regression: session timeline local row state", () => {
     await expect(wrapper.locator('[data-slot="diff-changes-additions"]').filter({ hasText: "+2" }).first()).toBeVisible(
       { timeout: 10_000 },
     )
-    expect(await readDiffProbe(page)).toEqual({ fileMarker: "before", shadowRoots: 0, toolMarker: "before" })
+    expect(await readDiffProbe(page)).toEqual({
+      fileMarker: "before",
+      frameMarker: "before",
+      rowKey: `assistant-part:${userMessageID}:part:${assistantMessageID}:${editPartID}`,
+      rowMarker: "before",
+      shadowRoots: 0,
+      toolMarker: "before",
+    })
+  })
+
+  test("keeps a sticky edit header aligned with a multi-hunk diff", async ({ page }) => {
+    const events: EventPayload[] = []
+    const lines = Array.from({ length: 1_000 }, (_, index) => `export const value${index} = ${index}\n`).join("")
+    const after = [100, 300, 500, 700, 900].reduce(
+      (result, index) =>
+        result.replace(`export const value${index} = ${index}`, `export const value${index} = compute(${index})`),
+      lines,
+    )
+    const part = {
+      ...editPart,
+      state: {
+        ...editPart.state,
+        metadata: {
+          ...editPart.state.metadata,
+          filediff: {
+            file: "src/regression.ts",
+            additions: 1,
+            deletions: 1,
+            before: lines,
+            after,
+          },
+        },
+      },
+    }
+    await mockServer(page, events, [userMessage, { ...assistantMessage, parts: [part] }])
+    await configurePage(page)
+
+    await page.goto(`/${base64Encode(directory)}/session/${sessionID}`)
+    await expectSessionTitle(page, title)
+
+    const wrapper = page.locator(`[data-timeline-part-id="${editPartID}"]`).first()
+    const trigger = wrapper.locator('[data-slot="collapsible-trigger"]').first()
+    const diff = wrapper.locator('[data-component="edit-content"]').first()
+    await expectAppVisible(diff)
+    await expect.poll(() => wrapper.evaluate((element) => element.getBoundingClientRect().height)).toBeGreaterThan(500)
+    const samples = await wrapper.evaluate(async (element) => {
+      const root = element.closest<HTMLElement>(".scroll-view__viewport")!
+      element.scrollIntoView({ block: "start" })
+      const result = []
+      for (const offset of [0, 120, 240, 360, 480]) {
+        root.scrollBy(0, offset - (result.at(-1)?.offset ?? 0))
+        await new Promise(requestAnimationFrame)
+        const trigger = element.querySelector<HTMLElement>('[data-slot="collapsible-trigger"]')!
+        const diff = element.querySelector<HTMLElement>('[data-component="edit-content"]')!
+        result.push({
+          offset,
+          trigger: trigger.getBoundingClientRect().y,
+          diff: diff.getBoundingClientRect().y,
+          bottom: element.getBoundingClientRect().bottom,
+        })
+      }
+      return result
+    })
+
+    expect(samples[0]!.trigger).toBeLessThan(samples[0]!.diff)
+    expect(samples.every((sample) => Math.abs(sample.trigger - samples[0]!.trigger) <= 1)).toBe(true)
+    expect(samples.every((sample) => sample.trigger < sample.bottom)).toBe(true)
   })
 })
 
@@ -246,10 +322,16 @@ async function markDiffProbe(page: Page) {
     .evaluate((element) => {
       const tool = element as HTMLElement
       const file = tool.querySelector<HTMLElement>('[data-component="file"][data-mode="diff"]')
+      const row = tool.closest<HTMLElement>("[data-timeline-key]")
+      const frame = tool.closest<HTMLElement>("[data-timeline-row]")
       if (!file) throw new Error("missing edit diff file")
+      if (!row) throw new Error("missing virtual timeline row")
+      if (!frame) throw new Error("missing timeline row frame")
 
       tool.dataset.timelineProbe = "before"
       file.dataset.timelineProbe = "before"
+      row.dataset.timelineProbe = "before"
+      frame.dataset.timelineProbe = "before"
       window.__timelineDiffProbe.reset()
     })
 }
@@ -261,10 +343,15 @@ async function readDiffProbe(page: Page) {
     .evaluate((element) => {
       const tool = element as HTMLElement
       const file = tool.querySelector<HTMLElement>('[data-component="file"][data-mode="diff"]')
+      const row = tool.closest<HTMLElement>("[data-timeline-key]")
+      const frame = tool.closest<HTMLElement>("[data-timeline-row]")
       return {
         fileMarker: file?.dataset.timelineProbe,
         shadowRoots: window.__timelineDiffProbe.shadowRoots(),
         toolMarker: tool.dataset.timelineProbe,
+        rowMarker: row?.dataset.timelineProbe,
+        rowKey: row?.dataset.timelineKey,
+        frameMarker: frame?.dataset.timelineProbe,
       }
     })
 }
@@ -299,14 +386,15 @@ function readExpanded(element: Element) {
   return !!content && content.getBoundingClientRect().height > 0
 }
 
-async function mockServer(page: Page, events: EventPayload[]) {
+async function mockServer(page: Page, events: EventPayload[], messages = [userMessage, assistantMessage]) {
   await mockOpenCodeServer(page, {
     directory,
     project: project(),
     provider: provider(),
     sessions: [session()],
-    pageMessages: () => ({ items: [userMessage, assistantMessage] }),
-    events: () => events.splice(0),
+    pageMessages: () => ({ items: messages }),
+    events: () => events.splice(0, 1),
+    eventRetry: 16,
   })
 }
 

packages/app/e2e/regression/session-timeline-context-resize.spec.ts

@@ -1,5 +1,6 @@
 import { expect, test, type Page } from "@playwright/test"
 import { mockOpenCodeServer } from "../utils/mock-server"
+import { expectAppVisible, expectSessionTitle } from "../utils/waits"
 
 const directory = "C:/OpenCode/ContextResizeRegression"
 const projectID = "proj_context_resize_regression"
@@ -23,16 +24,14 @@ test.describe("regression: session timeline context group resize", () => {
     await configurePage(page)
 
     await page.goto(`/${base64Encode(directory)}/session/${sessionID}`)
-    await expect(page.getByRole("heading", { name: title })).toBeVisible()
-    await expect(page.locator(`[data-timeline-part-ids="${contextIDs.join(",")}"]`).first()).toBeVisible()
-    await expect(page.locator(`[data-timeline-part-id="${followingTextID}"]`).first()).toBeVisible()
+    await expectSessionTitle(page, title)
+    await expectAppVisible(page.locator(`[data-timeline-part-ids="${contextIDs.join(",")}"]`).first())
+    await expectAppVisible(page.locator(`[data-timeline-part-id="${followingTextID}"]`).first())
     await settle(page)
 
     const samples = await sampleExpansion(page)
     const visibleOverlap = samples.filter((sample) => sample.frame >= 1 && sample.overlap > 0.5)
 
-    console.log("context resize samples", JSON.stringify(samples, null, 2))
-
     expect(samples[0]?.overlap).toBe(0)
     expect(visibleOverlap).toEqual([])
     expect(samples.at(-1)?.expanded).toBe("true")
@@ -114,13 +113,15 @@ async function sampleExpansion(page: Page) {
 
         let frame = 1
         const tick = () => {
-          capture(frame, "raf")
-          frame += 1
-          if (frame > 8) {
-            resolve(samples)
-            return
-          }
-          requestAnimationFrame(tick)
+          setTimeout(() => {
+            capture(frame, "painted")
+            frame += 1
+            if (frame > 8) {
+              resolve(samples)
+              return
+            }
+            requestAnimationFrame(tick)
+          }, 0)
         }
         requestAnimationFrame(tick)
       }),

packages/app/e2e/smoke/session-timeline.spec.ts

@@ -3,6 +3,7 @@ import { base64Encode } from "@opencode-ai/core/util/encode"
 import { fixture, pageMessages } from "./session-timeline.fixture"
 import { trackPageErrors, expectNoSmokeErrors } from "../utils/errors"
 import { mockOpenCodeServer } from "../utils/mock-server"
+import { APP_READY_TIMEOUT, expectAppVisible, expectSessionTitle } from "../utils/waits"
 
 const forbiddenText = ["Load details", "Show earlier steps"]
 
@@ -29,6 +30,284 @@ type SmokeWindow = Window & {
 test.describe("smoke: session timeline", () => {
   test.setTimeout(240_000)
 
+  test("keeps the visible message fixed while prepending history", async ({ page }) => {
+    const requests: { before?: string; phase: "start" | "end"; at: number }[] = []
+    await mockOpenCodeServer(page, {
+      sessions: fixture.sessions,
+      provider: fixture.provider,
+      directory: fixture.directory,
+      project: fixture.project,
+      pageMessages,
+      messageDelay: 3_000,
+      onMessages: (input) => requests.push({ before: input.before, phase: input.phase, at: performance.now() }),
+    })
+    await configureSmokePage(page, fixture.directory)
+
+    await navigateToSession(page, fixture.directory, fixture.targetID, fixture.expected.targetTitle)
+    await waitForTimelineStable(page)
+    const scroller = timelineScroller(page)
+    await pointAtTimeline(page)
+    const deadline = Date.now() + 120_000
+    while (!requests.some((request) => request.before && request.phase === "start")) {
+      if (Date.now() >= deadline) throw new Error("Timed out scrolling to the history boundary")
+      await page.mouse.wheel(0, -240)
+      await page.waitForTimeout(20)
+    }
+    expect(requests.some((request) => request.before && request.phase === "end")).toBe(false)
+    for (let index = 0; index < 12; index++) {
+      await page.mouse.wheel(0, -120)
+      await page.waitForTimeout(20)
+    }
+    const keys = ["prt_user_text_smoke_0032", "prt_text_2_smoke_0032", "prt_tool_apply_patch_8_smoke_0032"]
+    const positions = () =>
+      scroller.evaluate((element, keys) => {
+        const top = element.getBoundingClientRect().top
+        return Object.fromEntries(
+          keys.map((key) => {
+            const row = element.querySelector<HTMLElement>(`[data-timeline-part-id="${key}"]`)
+            if (!row) throw new Error(`Missing stable timeline key: ${key}`)
+            return [key, Math.round((row.getBoundingClientRect().top - top) * devicePixelRatio) / devicePixelRatio]
+          }),
+        )
+      }, keys)
+    const before = await positions()
+    expect(requests.some((request) => request.before && request.phase === "end")).toBe(false)
+
+    await expect.poll(() => requests.some((request) => request.before && request.phase === "end")).toBe(true)
+    await waitForTimelineStable(page)
+    await expect.poll(positions).toEqual(before)
+  })
+
+  test("preserves the timeline gap above the composer", async ({ page }) => {
+    await mockOpenCodeServer(page, {
+      sessions: fixture.sessions,
+      provider: fixture.provider,
+      directory: fixture.directory,
+      project: fixture.project,
+      pageMessages,
+    })
+    await configureSmokePage(page, fixture.directory)
+
+    await navigateToSession(page, fixture.directory, fixture.targetID, fixture.expected.targetTitle)
+    await waitForTimelineStable(page)
+    const scroller = timelineScroller(page)
+    await scroller.evaluate((element) => {
+      element.scrollTop = element.scrollHeight
+    })
+    await waitForTimelineStable(page)
+
+    const spacer = scroller.locator('[data-timeline-row="bottom-spacer"]')
+    await expect(spacer).toBeVisible()
+    expect(await spacer.evaluate((element) => element.getBoundingClientRect().height)).toBe(64)
+    await expect
+      .poll(() => scroller.evaluate((element) => element.scrollHeight - element.clientHeight - element.scrollTop))
+      .toBeLessThanOrEqual(1)
+  })
+
+  test("paints cached session tabs at the latest message", async ({ page }) => {
+    await mockOpenCodeServer(page, {
+      sessions: fixture.sessions,
+      provider: fixture.provider,
+      directory: fixture.directory,
+      project: fixture.project,
+      pageMessages: (sessionID) => ({ items: fixture.messages[sessionID as keyof typeof fixture.messages] ?? [] }),
+    })
+    await configureSmokePage(page, fixture.directory)
+    await page.addInitScript(
+      ({ dirBase64, sourceID, targetID }) => {
+        localStorage.setItem(
+          "opencode.global.dat:tabs",
+          JSON.stringify(
+            [sourceID, targetID].map((sessionId) => ({
+              type: "session",
+              server: "http://127.0.0.1:4096",
+              dirBase64,
+              sessionId,
+            })),
+          ),
+        )
+      },
+      { dirBase64: base64Encode(fixture.directory), sourceID: fixture.sourceID, targetID: fixture.targetID },
+    )
+
+    await page.goto(`/${base64Encode(fixture.directory)}/session/${fixture.targetID}`)
+    await expectSessionTitle(page, fixture.expected.targetTitle)
+    await switchTitlebarSession(page, fixture.sourceID, fixture.expected.sourceTitle)
+
+    const destination = fixture.messages[fixture.targetID].map((message) => message.info.id)
+    const last = fixture.expected.targetMessageIDs.at(-1)!
+    await page.evaluate(
+      ({ destination, last }) => {
+        const ids = new Set(destination)
+        const samples: Array<{ ids: string[]; last: boolean; bottomError?: number }> = []
+        const firstPaintNodes = new WeakSet<Node>()
+        let firstPaint = false
+        let removedFirstPaintNodes = 0
+        let running = true
+        new MutationObserver((records) => {
+          if (!firstPaint || !running) return
+          records.forEach((record) =>
+            record.removedNodes.forEach((node) => {
+              if (firstPaintNodes.has(node)) removedFirstPaintNodes += 1
+              if (!(node instanceof Element)) return
+              node.querySelectorAll("*").forEach((element) => {
+                if (firstPaintNodes.has(element)) removedFirstPaintNodes += 1
+              })
+            }),
+          )
+        }).observe(document.documentElement, { childList: true, subtree: true })
+        const sample = () => {
+          if (!running) return
+          setTimeout(() => {
+            if (!running) return
+            const root = [...document.querySelectorAll<HTMLElement>(".scroll-view__viewport")].find((element) =>
+              element.querySelector("[data-timeline-row]"),
+            )
+            if (root) {
+              const view = root.getBoundingClientRect()
+              const visible = [...root.querySelectorAll<HTMLElement>("[data-message-id]")]
+                .filter((element) => {
+                  const rect = element.getBoundingClientRect()
+                  return rect.bottom > view.top && rect.top < view.bottom
+                })
+                .map((element) => element.dataset.messageId!)
+                .filter((id) => ids.has(id))
+              const bottom = root
+                .querySelector<HTMLElement>('[data-timeline-row="bottom-spacer"]')
+                ?.getBoundingClientRect()
+              samples.push({ ids: visible, last: visible.includes(last), bottomError: bottom?.bottom - view.bottom })
+              if (!firstPaint && visible.includes(last) && Math.abs((bottom?.bottom ?? Infinity) - view.bottom) <= 1) {
+                firstPaint = true
+                root.querySelectorAll<HTMLElement>("[data-timeline-key]").forEach((row) => {
+                  const rect = row.getBoundingClientRect()
+                  if (rect.bottom <= view.top || rect.top >= view.bottom) return
+                  firstPaintNodes.add(row)
+                  row.querySelectorAll("*").forEach((element) => firstPaintNodes.add(element))
+                })
+              }
+            }
+            requestAnimationFrame(sample)
+          }, 0)
+        }
+        ;(
+          window as Window & {
+            __sessionTabPaint?: { samples: typeof samples; removed: () => number; stop: () => void }
+          }
+        ).__sessionTabPaint = {
+          samples,
+          removed: () => removedFirstPaintNodes,
+          stop: () => {
+            running = false
+          },
+        }
+        requestAnimationFrame(sample)
+      },
+      { destination, last },
+    )
+
+    await switchTitlebarSession(page, fixture.targetID, fixture.expected.targetTitle)
+    await page.waitForFunction(() =>
+      (
+        window as Window & { __sessionTabPaint?: { samples: Array<{ ids: string[] }> } }
+      ).__sessionTabPaint?.samples.some((sample) => sample.ids.length > 0),
+    )
+    await page.waitForTimeout(200)
+    const first = await page.evaluate(() => {
+      const probe = (
+        window as Window & {
+          __sessionTabPaint?: {
+            samples: Array<{ ids: string[]; last: boolean; bottomError?: number }>
+            removed: () => number
+            stop: () => void
+          }
+        }
+      ).__sessionTabPaint!
+      probe.stop()
+      return { first: probe.samples.find((sample) => sample.ids.length > 0), removed: probe.removed() }
+    })
+    expect(first.first?.last).toBe(true)
+    expect(Math.abs(first.first?.bottomError ?? Infinity)).toBeLessThanOrEqual(1)
+    expect(first.removed).toBe(0)
+  })
+
+  test("paints a cold session tab at the latest message", async ({ page }) => {
+    await mockOpenCodeServer(page, {
+      sessions: fixture.sessions,
+      provider: fixture.provider,
+      directory: fixture.directory,
+      project: fixture.project,
+      pageMessages: (sessionID) => ({ items: fixture.messages[sessionID as keyof typeof fixture.messages] ?? [] }),
+    })
+    await configureSmokePage(page, fixture.directory)
+    await page.addInitScript(
+      ({ dirBase64, sourceID, targetID }) => {
+        localStorage.setItem(
+          "opencode.global.dat:tabs",
+          JSON.stringify(
+            [sourceID, targetID].map((sessionId) => ({
+              type: "session",
+              server: "http://127.0.0.1:4096",
+              dirBase64,
+              sessionId,
+            })),
+          ),
+        )
+      },
+      { dirBase64: base64Encode(fixture.directory), sourceID: fixture.sourceID, targetID: fixture.targetID },
+    )
+    await page.goto(`/${base64Encode(fixture.directory)}/session/${fixture.sourceID}`)
+    await expectSessionTitle(page, fixture.expected.sourceTitle)
+    const last = fixture.expected.targetMessageIDs.at(-1)!
+    const destination = fixture.messages[fixture.targetID].map((message) => message.info.id)
+    await page.evaluate(
+      ({ destination, last }) => {
+        const ids = new Set(destination)
+        const samples: Array<{ destination: boolean; last: boolean; bottomError?: number }> = []
+        const sample = () => {
+          const root = [...document.querySelectorAll<HTMLElement>(".scroll-view__viewport")].find((element) =>
+            element.querySelector("[data-timeline-row]"),
+          )
+          if (root) {
+            const view = root.getBoundingClientRect()
+            const spacer = root
+              .querySelector<HTMLElement>('[data-timeline-row="bottom-spacer"]')
+              ?.getBoundingClientRect()
+            const messages = [...root.querySelectorAll<HTMLElement>("[data-message-id]")].filter((element) => {
+              const rect = element.getBoundingClientRect()
+              return rect.bottom > view.top && rect.top < view.bottom
+            })
+            samples.push({
+              destination: messages.some((element) => ids.has(element.dataset.messageId!)),
+              last: messages.some((element) => element.dataset.messageId === last),
+              bottomError: spacer ? spacer.bottom - view.bottom : undefined,
+            })
+          }
+          requestAnimationFrame(() => setTimeout(sample, 0))
+        }
+        ;(window as Window & { __coldTabSamples?: typeof samples }).__coldTabSamples = samples
+        requestAnimationFrame(() => setTimeout(sample, 0))
+      },
+      { destination, last },
+    )
+
+    await switchTitlebarSession(page, fixture.targetID, fixture.expected.targetTitle)
+    await page.waitForFunction(() =>
+      (window as Window & { __coldTabSamples?: Array<{ destination: boolean }> }).__coldTabSamples?.some(
+        (sample) => sample.destination,
+      ),
+    )
+    const result = await page.evaluate(() => {
+      const samples = (
+        window as Window & {
+          __coldTabSamples?: Array<{ destination: boolean; last: boolean; bottomError?: number }>
+        }
+      ).__coldTabSamples!
+      return samples.find((sample) => sample.destination)!
+    })
+    expect(result.last).toBe(true)
+    expect(Math.abs(result.bottomError ?? Infinity)).toBeLessThanOrEqual(1)
+  })
+
   test("renders seeded timeline in order while paging through history", async ({ page }) => {
     const errors = trackPageErrors(page)
     await mockOpenCodeServer(page, {
@@ -411,18 +690,29 @@ function expectCompleteScroll(
 
 async function selectHomeProject(page: Page, projectName: string) {
   await page.goto("/")
-  await page
+  const row = page
     .locator('[data-component="home-project-row"]')
     .filter({ hasText: new RegExp(projectName, "i") })
-    .click()
+    .first()
+  await expectAppVisible(row)
+  await row.click()
+  await expect(row).toHaveAttribute("data-selected", "", { timeout: APP_READY_TIMEOUT })
   await expect(page).toHaveURL(/\/$/)
 }
 
 async function navigateToSession(page: Page, directory: string, sessionId: string, expectedTitle: string) {
   await page.goto(`/${base64Encode(directory)}/session/${sessionId}`)
-  await expect(page.getByRole("heading", { name: expectedTitle })).toBeVisible()
+  await expectSessionTitle(page, expectedTitle)
+}
+
+async function switchTitlebarSession(page: Page, sessionID: string, title: string) {
+  const href = `/${base64Encode(fixture.directory)}/session/${sessionID}`
+  const tab = page.locator(`[data-slot="titlebar-tabs"] a[href="${href}"]`).first()
+  await expect(tab).toBeVisible()
+  await tab.click()
+  await expectSessionTitle(page, title)
 }
 
 async function expectSessionReady(page: Page) {
-  await expect(page.getByRole("textbox", { name: /Ask anything/i })).toBeVisible()
+  await expectAppVisible(page.getByRole("textbox", { name: /Ask anything/i }))
 }

packages/app/e2e/utils/mock-server.ts

@@ -18,7 +18,10 @@ export interface MockServerConfig {
   project: unknown
   sessions: ({ id: string } & Record<string, unknown>)[]
   pageMessages: (sessionId: string, limit: number, before?: string) => { items: unknown[]; cursor?: string }
+  messageDelay?: number
+  onMessages?: (input: { sessionID: string; before?: string; phase: "start" | "end" }) => void
   events?: () => unknown[]
+  eventRetry?: number
 }
 
 export async function mockOpenCodeServer(page: Page, config: MockServerConfig) {
@@ -41,10 +44,13 @@ export async function mockOpenCodeServer(page: Page, config: MockServerConfig) {
   await page.route("**/*", async (route) => {
     const url = new URL(route.request().url())
     const targetPort = process.env.PLAYWRIGHT_SERVER_PORT ?? "4096"
-    if (url.port !== targetPort) return route.fallback()
+    const appPort = new URL(
+      process.env.PLAYWRIGHT_BASE_URL ?? `http://127.0.0.1:${process.env.PLAYWRIGHT_PORT ?? "3000"}`,
+    ).port
+    if (url.port !== targetPort && url.port !== appPort) return route.fallback()
 
     const path = url.pathname
-    if (path === "/global/event" || path === "/event") return sse(route, config.events?.())
+    if (path === "/global/event" || path === "/event") return sse(route, config.events?.(), config.eventRetry)
     if (path === "/global/health") return json(route, { healthy: true })
     if (emptyObject.has(path)) return json(route, {})
     if (emptyList.has(path)) return json(route, [])
@@ -60,13 +66,17 @@ export async function mockOpenCodeServer(page: Page, config: MockServerConfig) {
 
     const messagesMatch = path.match(/^\/session\/([^/]+)\/message$/)
     if (messagesMatch) {
-      const limit = Number(url.searchParams.get("limit") ?? 80)
       const before = url.searchParams.get("before") ?? undefined
+      config.onMessages?.({ sessionID: messagesMatch[1], before, phase: "start" })
+      if (config.messageDelay) await new Promise((resolve) => setTimeout(resolve, config.messageDelay))
+      const limit = Number(url.searchParams.get("limit") ?? 80)
       const pageData = config.pageMessages(messagesMatch[1], limit, before)
+      config.onMessages?.({ sessionID: messagesMatch[1], before, phase: "end" })
       return json(route, pageData.items, pageData.cursor ? { "x-next-cursor": pageData.cursor } : undefined)
     }
 
-    return json(route, {})
+    if (url.port === targetPort && targetPort !== appPort) return json(route, {})
+    return route.fallback()
   })
 }
 
@@ -83,10 +93,10 @@ function json(route: Route, body: unknown, headers?: Record<string, string>) {
   })
 }
 
-function sse(route: Route, events?: unknown[]) {
+function sse(route: Route, events?: unknown[], retry?: number) {
   return route.fulfill({
     status: 200,
     contentType: "text/event-stream",
-    body: events?.map((event) => `data: ${JSON.stringify(event)}\n\n`).join("") || ": ok\n\n",
+    body: `${retry === undefined ? "" : `retry: ${retry}\n\n`}${events?.map((event) => `data: ${JSON.stringify(event)}\n\n`).join("") || ": ok\n\n"}`,
   })
 }

packages/app/e2e/utils/waits.ts

@@ -0,0 +1,11 @@
+import { expect, type Locator, type Page } from "@playwright/test"
+
+export const APP_READY_TIMEOUT = 30_000
+
+export async function expectAppVisible(locator: Locator) {
+  await expect(locator).toBeVisible({ timeout: APP_READY_TIMEOUT })
+}
+
+export async function expectSessionTitle(page: Page, title: string) {
+  await expectAppVisible(page.getByRole("heading", { name: title }))
+}

packages/app/package.json

@@ -1,11 +1,13 @@
 {
   "name": "@opencode-ai/app",
-  "version": "1.15.13",
+  "version": "1.17.8",
   "description": "",
   "type": "module",
   "exports": {
     ".": "./src/index.ts",
     "./desktop-menu": "./src/desktop-menu.ts",
+    "./updater": "./src/updater.ts",
+    "./wsl/types": "./src/wsl/types.ts",
     "./vite": "./vite.js",
     "./index.css": "./src/index.css"
   },
@@ -15,14 +17,15 @@
     "dev": "vite",
     "build": "vite build",
     "serve": "vite preview",
-    "test": "bun run test:unit",
-    "test:ci": "mkdir -p .artifacts/unit && bun test --preload ./happydom.ts ./src --reporter=junit --reporter-outfile=.artifacts/unit/junit.xml",
-    "test:unit": "bun test --preload ./happydom.ts ./src",
+    "test": "bun run test:unit && bun run test:virtualizer",
+    "test:unit": "bun test --only-failures --preload ./happydom.ts ./src",
+    "test:virtualizer": "bun test --conditions=browser --preload ./happydom.ts ./test-browser/solid-virtual.test.ts",
     "test:unit:watch": "bun test --watch --preload ./happydom.ts ./src",
     "test:e2e": "playwright test",
     "test:e2e:local": "playwright test",
     "test:e2e:ui": "playwright test --ui",
-    "test:e2e:report": "playwright show-report e2e/playwright-report"
+    "test:e2e:report": "playwright show-report e2e/playwright-report",
+    "test:bench": "bun test ./e2e/performance/unit && playwright test --config e2e/performance/playwright.config.ts"
   },
   "license": "MIT",
   "devDependencies": {
@@ -45,6 +48,7 @@
     "@opencode-ai/core": "workspace:*",
     "@opencode-ai/sdk": "workspace:*",
     "@opencode-ai/ui": "workspace:*",
+    "@pierre/trees": "1.0.0-beta.4",
     "@sentry/solid": "catalog:",
     "@shikijs/transformers": "3.9.2",
     "@solid-primitives/active-element": "2.1.3",
@@ -62,6 +66,7 @@
     "@solidjs/meta": "catalog:",
     "@solidjs/router": "catalog:",
     "@tanstack/solid-query": "5.91.4",
+    "@tanstack/solid-virtual": "catalog:",
     "@thisbeyond/solid-dnd": "0.7.5",
     "diff": "catalog:",
     "effect": "catalog:",
@@ -74,7 +79,6 @@
     "shiki": "catalog:",
     "solid-js": "catalog:",
     "solid-list": "catalog:",
-    "tailwindcss": "catalog:",
-    "virtua": "catalog:"
+    "tailwindcss": "catalog:"
   }
 }

packages/app/playwright.config.ts

@@ -7,14 +7,9 @@ const serverPort = process.env.PLAYWRIGHT_SERVER_PORT ?? "4096"
 const command = `bun run dev -- --host 0.0.0.0 --port ${port}`
 const reuse = !process.env.CI
 const workers = Number(process.env.PLAYWRIGHT_WORKERS ?? (process.env.CI ? 5 : 0)) || undefined
-const reporter = [["html", { outputFolder: "e2e/playwright-report", open: "never" }], ["line"]] as const
-
-if (process.env.PLAYWRIGHT_JUNIT_OUTPUT) {
-  reporter.push(["junit", { outputFile: process.env.PLAYWRIGHT_JUNIT_OUTPUT }])
-}
-
 export default defineConfig({
   testDir: "./e2e",
+  testIgnore: process.env.OPENCODE_PERFORMANCE === "1" ? "performance/**/*.test.ts" : "performance/**",
   outputDir: "./e2e/test-results",
   timeout: 60_000,
   expect: {
@@ -24,7 +19,7 @@ export default defineConfig({
   forbidOnly: !!process.env.CI,
   retries: process.env.CI ? 2 : 0,
   workers,
-  reporter,
+  reporter: [["html", { outputFolder: "e2e/playwright-report", open: "never" }], ["line"]],
   webServer: {
     command,
     url: baseURL,

packages/app/src/app.tsx

@@ -9,7 +9,7 @@ import { Font } from "@opencode-ai/ui/font"
 import { Splash } from "@opencode-ai/ui/logo"
 import { ThemeProvider } from "@opencode-ai/ui/theme/context"
 import { MetaProvider } from "@solidjs/meta"
-import { type BaseRouterProps, Navigate, Route, Router } from "@solidjs/router"
+import { type BaseRouterProps, Navigate, Route, Router, useParams, useSearchParams } from "@solidjs/router"
 import { QueryClient, QueryClientProvider } from "@tanstack/solid-query"
 import { Effect } from "effect"
 import {
@@ -25,7 +25,6 @@ import {
   onCleanup,
   type ParentProps,
   Show,
-  Suspense,
 } from "solid-js"
 import { Dynamic } from "solid-js/web"
 import { CommandProvider } from "@/context/command"
@@ -33,6 +32,7 @@ import { CommentsProvider } from "@/context/comments"
 import { FileProvider } from "@/context/file"
 import { ServerSDKProvider } from "@/context/server-sdk"
 import { ServerSyncProvider } from "@/context/server-sync"
+import { GlobalProvider } from "@/context/global"
 import { HighlightsProvider } from "@/context/highlights"
 import { LanguageProvider, type Locale, useLanguage } from "@/context/language"
 import { LayoutProvider } from "@/context/layout"
@@ -43,24 +43,123 @@ import { PromptProvider } from "@/context/prompt"
 import { ServerConnection, ServerProvider, serverName, useServer } from "@/context/server"
 import { SettingsProvider, useSettings } from "@/context/settings"
 import { TerminalProvider } from "@/context/terminal"
-import DirectoryLayout from "@/pages/directory-layout"
+import { TabsProvider, useTabs, type DraftTab } from "@/context/tabs"
+import { SDKProvider, useSDK } from "@/context/sdk"
+import { WslServersProvider } from "@/wsl/context"
+import DirectoryLayout, { DirectoryDataProvider } from "@/pages/directory-layout"
 import Layout from "@/pages/layout"
 import { ErrorPage } from "./pages/error"
 import { useCheckServerHealth } from "./utils/server-health"
-import { ServersProvider } from "./context/servers"
 
 const HomeRoute = lazy(() => import("@/pages/home"))
 const Session = lazy(() => import("@/pages/session"))
+const NewSession = lazy(() => import("@/pages/new-session"))
 
 const SessionRoute = Object.assign(
-  () => (
-    <SessionProviders>
-      <Session />
-    </SessionProviders>
-  ),
+  () => {
+    const settings = useSettings()
+    const params = useParams()
+    const [search] = useSearchParams<{ draftId?: string; prompt?: string }>()
+    const sdk = useSDK()
+    const server = useServer()
+    const tabs = useTabs()
+
+    // When the new layout is enabled, the legacy new-session route (/:dir/session with no id)
+    // is replaced by a draft at /new-session?draftId=…
+    createEffect(() => {
+      if (!settings.general.newLayoutDesigns()) return
+      if (params.id || search.draftId) return
+      if (!tabs.ready() || !sdk().directory) return
+      tabs.newDraft({ server: server.key, directory: sdk().directory }, search.prompt)
+    })
+
+    return (
+      <SessionProviders>
+        <Session />
+      </SessionProviders>
+    )
+  },
   { preload: Session.preload },
 )
 
+// Wraps the non-draft routes. They are gated on (and keyed to) the globally selected
+// server via ServerKey, then provide the server-scoped shell (Permission/Layout/
+// Notification/Models + the visual Layout) for that server.
+function SelectedServerLayout(props: ParentProps) {
+  return (
+    <ServerKey>
+      <ServerSDKProvider>
+        <ServerSyncProvider>
+          <ServerScopedShell>{props.children}</ServerScopedShell>
+        </ServerSyncProvider>
+      </ServerSDKProvider>
+    </ServerKey>
+  )
+}
+
+// Wraps /new-session. It resolves the draft's target server and provides the
+// server-scoped shell for that server — without ServerKey, so the page never depends
+// on the globally "selected" server.
+function DraftServerLayout(props: ParentProps) {
+  const server = useServer()
+  const tabs = useTabs()
+  const [search] = useSearchParams<{ draftId?: string }>()
+  const conn = createMemo(() => {
+    const id = search.draftId
+    if (!id) return undefined
+    const draft = tabs.store.find((tab): tab is DraftTab => tab.type === "draft" && tab.draftID === id)
+    if (!draft) return undefined
+    return server.list.find((c) => ServerConnection.key(c) === draft.server)
+  })
+
+  return (
+    <ServerSDKProvider server={conn}>
+      <ServerSyncProvider server={conn}>
+        <ServerScopedShell>{props.children}</ServerScopedShell>
+      </ServerSyncProvider>
+    </ServerSDKProvider>
+  )
+}
+
+function DraftRoute() {
+  const [search] = useSearchParams<{ draftId?: string }>()
+  const tabs = useTabs()
+  return (
+    <Show when={tabs.ready()}>
+      <Show when={search.draftId} keyed fallback={<Navigate href="/" />}>
+        {(draftID) => <ResolvedDraftRoute draftID={draftID} />}
+      </Show>
+    </Show>
+  )
+}
+
+function ResolvedDraftRoute(props: { draftID: string }) {
+  const tabs = useTabs()
+  const draft = createMemo(() =>
+    tabs.store.find((tab): tab is DraftTab => tab.type === "draft" && tab.draftID === props.draftID),
+  )
+
+  // Key on the directory so retargeting the draft's project re-instantiates the
+  // directory-scoped providers while keeping the same draft id. The draft's target
+  // server is provided by DraftServerLayout, so changing only the server updates the
+  // SDK/sync hooks without remounting the composer.
+  const directory = () => draft()?.directory
+
+  return (
+    <Show when={directory()} keyed>
+      {(dir) => (
+        <SDKProvider directory={dir}>
+          <DirectoryDataProvider directory={dir} draftID={props.draftID}>
+            <DraftProviders>
+              <NewSession />
+            </DraftProviders>
+          </DirectoryDataProvider>
+        </SDKProvider>
+      )}
+    </Show>
+  )
+}
+
 function UiI18nBridge(props: ParentProps) {
   const language = useLanguage()
   return <I18nProvider value={{ locale: language.intl, t: language.t }}>{props.children}</I18nProvider>
@@ -69,9 +168,7 @@ function UiI18nBridge(props: ParentProps) {
 declare global {
   interface Window {
     __OPENCODE__?: {
-      updaterEnabled?: boolean
       deepLinks?: string[]
-      wsl?: boolean
     }
     api?: {
       setTitlebar?: (theme: { mode: "light" | "dark" }) => Promise<void>
@@ -109,27 +206,36 @@ function BodyDesignClass() {
   return null
 }
 
-function AppShellProviders(props: ParentProps) {
+// Server-agnostic providers shared across every route. These live in the shared
+// shell (router root) so they stay mounted regardless of the active server/route.
+function SharedProviders(props: ParentProps) {
   return (
     <SettingsProvider>
       <BodyDesignClass />
-      <PermissionProvider>
-        <LayoutProvider>
-          <NotificationProvider>
-            <ModelsProvider>
-              <CommandProvider>
-                <HighlightsProvider>
-                  <Layout>{props.children}</Layout>
-                </HighlightsProvider>
-              </CommandProvider>
-            </ModelsProvider>
-          </NotificationProvider>
-        </LayoutProvider>
-      </PermissionProvider>
+      <CommandProvider>
+        <HighlightsProvider>{props.children}</HighlightsProvider>
+      </CommandProvider>
     </SettingsProvider>
   )
 }
 
+// Server-scoped providers plus the visual Layout (tabs/sidebar). These live inside
+// each per-route server layout so they resolve to that route's server (selected vs
+// draft). The Layout remounts when crossing between those groups.
+function ServerScopedShell(props: ParentProps) {
+  return (
+    <PermissionProvider>
+      <LayoutProvider>
+        <NotificationProvider>
+          <ModelsProvider>
+            <Layout>{props.children}</Layout>
+          </ModelsProvider>
+        </NotificationProvider>
+      </LayoutProvider>
+    </PermissionProvider>
+  )
+}
+
 function SessionProviders(props: ParentProps) {
   return (
     <TerminalProvider>
@@ -142,14 +248,15 @@ function SessionProviders(props: ParentProps) {
   )
 }
 
-function RouterRoot(props: ParentProps<{ appChildren?: JSX.Element }>) {
+// The draft page only renders the prompt composer, so it drops TerminalProvider.
+// FileProvider and CommentsProvider stay because PromptInput uses file search and comment context.
+function DraftProviders(props: ParentProps) {
   return (
-    <AppShellProviders>
-      {/*<Suspense fallback={<Loading />}>*/}
-      {props.appChildren}
-      {props.children}
-      {/*</Suspense>*/}
-    </AppShellProviders>
+    <FileProvider>
+      <PromptProvider>
+        <CommentsProvider>{props.children}</CommentsProvider>
+      </PromptProvider>
+    </FileProvider>
   )
 }
 
@@ -171,11 +278,13 @@ export function AppBaseProviders(props: ParentProps<{ locale?: Locale }>) {
               }}
             >
               <QueryProvider>
-                <DialogProvider>
-                  <MarkedProvider>
-                    <FileComponentProvider component={File}>{props.children}</FileComponentProvider>
-                  </MarkedProvider>
-                </DialogProvider>
+                <WslServersProvider>
+                  <DialogProvider>
+                    <MarkedProvider>
+                      <FileComponentProvider component={File}>{props.children}</FileComponentProvider>
+                    </MarkedProvider>
+                  </DialogProvider>
+                </WslServersProvider>
               </QueryProvider>
             </ErrorBoundary>
           </UiI18nBridge>
@@ -211,26 +320,21 @@ function ConnectionGate(props: ParentProps<{ disableHealthCheck?: boolean }>) {
           Effect.runPromise,
         ),
   )
+  const checking = createMemo(
+    () => checkMode() === "blocking" && ["unresolved", "pending"].includes(startupHealthCheck.state),
+  )
 
   return (
-    <Suspense
+    <Show
+      when={!checking()}
       fallback={
         <div class="h-dvh w-screen flex flex-col items-center justify-center bg-background-base">
           <Splash class="w-16 h-20 opacity-50 animate-pulse" />
         </div>
       }
     >
-      {/*<Show
-        when={checkMode() === "blocking" ? !startupHealthCheck.loading : startupHealthCheck.state !== "pending"}
-        fallback={
-          <div class="h-dvh w-screen flex flex-col items-center justify-center bg-background-base">
-            <Splash class="w-16 h-20 opacity-50 animate-pulse" />
-          </div>
-        }
-      >*/}
-      {checkMode() === "blocking" ? startupHealthCheck() : startupHealthCheck.latest}
       <Show
-        when={startupHealthCheck()}
+        when={startupHealthCheck.latest}
         fallback={
           <ConnectionError
             onRetry={() => {
@@ -246,8 +350,7 @@ function ConnectionGate(props: ParentProps<{ disableHealthCheck?: boolean }>) {
       >
         {props.children}
       </Show>
-      {/*</Show>*/}
-    </Suspense>
+    </Show>
   )
 }
 
@@ -310,34 +413,54 @@ function ServerKey(props: ParentProps) {
 export function AppInterface(props: {
   children?: JSX.Element
   defaultServer: ServerConnection.Key
+  canonicalLocalServer?: ServerConnection.Key
   servers?: Array<ServerConnection.Any>
   router?: Component<BaseRouterProps>
   disableHealthCheck?: boolean
 }) {
+  // The shared shell holds only server-agnostic providers (QueryClient + Settings/
+  // Command/Highlights) and stays mounted across every route. The server-scoped
+  // providers and the visual Layout live in the per-route layouts below, so they
+  // resolve to that route's server (selected for most routes, the draft's server for
+  // /new-session). appChildren is server-agnostic, so it renders here once.
+  const ServerShell = (shellProps: ParentProps) => (
+    <QueryProvider>
+      <SharedProviders>
+        {props.children}
+        {shellProps.children}
+      </SharedProviders>
+    </QueryProvider>
+  )
+
   return (
-    <ServerProvider defaultServer={props.defaultServer} servers={props.servers}>
-      <ServersProvider>
+    <ServerProvider
+      defaultServer={props.defaultServer}
+      canonicalLocalServer={props.canonicalLocalServer}
+      servers={props.servers}
+    >
+      <GlobalProvider>
         <ConnectionGate disableHealthCheck={props.disableHealthCheck}>
-          <ServerKey>
-            <QueryProvider>
-              <ServerSDKProvider>
-                <ServerSyncProvider>
-                  <Dynamic
-                    component={props.router ?? Router}
-                    root={(routerProps) => <RouterRoot appChildren={props.children}>{routerProps.children}</RouterRoot>}
-                  >
-                    <Route path="/" component={HomeRoute} />
-                    <Route path="/:dir" component={DirectoryLayout}>
-                      <Route path="/" component={() => <Navigate href="session" />} />
-                      <Route path="/session/:id?" component={SessionRoute} />
-                    </Route>
-                  </Dynamic>
-                </ServerSyncProvider>
-              </ServerSDKProvider>
-            </QueryProvider>
-          </ServerKey>
+          <Dynamic
+            component={props.router ?? Router}
+            root={(routerProps) => (
+              <TabsProvider>
+                <ServerShell>{routerProps.children}</ServerShell>
+              </TabsProvider>
+            )}
+          >
+            <Route component={SelectedServerLayout}>
+              <Route path="/" component={HomeRoute} />
+              <Route path="/:dir" component={DirectoryLayout}>
+                <Route path="/" component={() => <Navigate href="session" />} />
+                <Route path="/session/:id?" component={SessionRoute} />
+              </Route>
+            </Route>
+            <Route component={DraftServerLayout}>
+              <Route path="/new-session" component={DraftRoute} />
+            </Route>
+          </Dynamic>
         </ConnectionGate>
-      </ServersProvider>
+      </GlobalProvider>
     </ServerProvider>
   )
 }

packages/app/src/components/dialog-connect-provider.tsx

@@ -41,7 +41,7 @@ export function DialogConnectProvider(props: { provider: string }) {
   })
 
   const provider = createMemo(
-    () => providers.all().get(props.provider) ?? serverSync.data.provider.all.get(props.provider)!,
+    () => providers.all().get(props.provider) ?? serverSync().data.provider.all.get(props.provider)!,
   )
   const fallback = createMemo<ProviderAuthMethod[]>(() => [
     {
@@ -52,16 +52,16 @@ export function DialogConnectProvider(props: { provider: string }) {
   const [auth] = createResource(
     () => props.provider,
     async () => {
-      const cached = serverSync.data.provider_auth[props.provider]
+      const cached = serverSync().data.provider_auth[props.provider]
       if (cached) return cached
-      const res = await serverSDK.client.provider.auth()
+      const res = await serverSDK().client.provider.auth()
       if (!alive.value) return fallback()
-      serverSync.set("provider_auth", res.data ?? {})
+      serverSync().set("provider_auth", res.data ?? {})
       return res.data?.[props.provider] ?? fallback()
     },
   )
-  const loading = createMemo(() => auth.loading && !serverSync.data.provider_auth[props.provider])
-  const methods = createMemo(() => auth.latest ?? serverSync.data.provider_auth[props.provider] ?? fallback())
+  const loading = createMemo(() => auth.loading && !serverSync().data.provider_auth[props.provider])
+  const methods = createMemo(() => auth.latest ?? serverSync().data.provider_auth[props.provider] ?? fallback())
   const [store, setStore] = createStore({
     methodIndex: undefined as undefined | number,
     authorization: undefined as undefined | ProviderAuthAuthorization,
@@ -158,8 +158,8 @@ export function DialogConnectProvider(props: { provider: string }) {
       }
       dispatch({ type: "auth.pending" })
       const start = Date.now()
-      await serverSDK.client.provider.oauth
-        .authorize(
+      await serverSDK()
+        .client.provider.oauth.authorize(
           {
             providerID: props.provider,
             method: index,
@@ -277,6 +277,7 @@ export function DialogConnectProvider(props: { provider: string }) {
               <div class="text-14-regular text-text-base">{select()?.message}</div>
               <div>
                 <List
+                  class="px-3"
                   items={select()?.options ?? []}
                   key={(x) => x.value}
                   current={select()?.options.find((x) => x.value === formStore.value[select()!.key])}
@@ -330,7 +331,7 @@ export function DialogConnectProvider(props: { provider: string }) {
   })
 
   async function complete() {
-    await serverSDK.client.global.dispose()
+    await serverSDK().client.global.dispose()
     dialog.close()
     showToast({
       variant: "success",
@@ -364,6 +365,7 @@ export function DialogConnectProvider(props: { provider: string }) {
         </div>
         <div>
           <List
+            class="px-3"
             ref={(ref) => {
               listRef = ref
             }}
@@ -407,7 +409,7 @@ export function DialogConnectProvider(props: { provider: string }) {
       }
 
       setFormStore("error", undefined)
-      await serverSDK.client.auth.set({
+      await serverSDK().client.auth.set({
         providerID: props.provider,
         auth: {
           type: "api",
@@ -478,8 +480,8 @@ export function DialogConnectProvider(props: { provider: string }) {
       }
 
       setFormStore("error", undefined)
-      const result = await serverSDK.client.provider.oauth
-        .callback({
+      const result = await serverSDK()
+        .client.provider.oauth.callback({
           providerID: props.provider,
           method: store.methodIndex,
           code,
@@ -531,8 +533,8 @@ export function DialogConnectProvider(props: { provider: string }) {
 
     onMount(() => {
       void (async () => {
-        const result = await serverSDK.client.provider.oauth
-          .callback({
+        const result = await serverSDK()
+          .client.provider.oauth.callback({
             providerID: props.provider,
             method: store.methodIndex,
           })

packages/app/src/components/dialog-custom-provider.tsx

@@ -105,8 +105,8 @@ export function DialogCustomProvider(props: Props) {
     const output = validateCustomProvider({
       form,
       t: language.t,
-      disabledProviders: serverSync.data.config.disabled_providers ?? [],
-      existingProviderIDs: new Set(serverSync.data.provider.all.keys()),
+      disabledProviders: serverSync().data.config.disabled_providers ?? [],
+      existingProviderIDs: new Set(serverSync().data.provider.all.keys()),
     })
     batch(() => {
       setForm("err", output.err)
@@ -118,11 +118,11 @@ export function DialogCustomProvider(props: Props) {
 
   const saveMutation = useMutation(() => ({
     mutationFn: async (result: NonNullable<ReturnType<typeof validate>>) => {
-      const disabledProviders = serverSync.data.config.disabled_providers ?? []
+      const disabledProviders = serverSync().data.config.disabled_providers ?? []
       const nextDisabled = disabledProviders.filter((id) => id !== result.providerID)
 
       if (result.key) {
-        await serverSDK.client.auth.set({
+        await serverSDK().client.auth.set({
           providerID: result.providerID,
           auth: {
             type: "api",
@@ -131,7 +131,7 @@ export function DialogCustomProvider(props: Props) {
         })
       }
 
-      await serverSync.updateConfig({
+      await serverSync().updateConfig({
         provider: { [result.providerID]: result.config },
         disabled_providers: nextDisabled,
       })

packages/app/src/components/dialog-edit-project.tsx

@@ -6,21 +6,23 @@ import { useMutation } from "@tanstack/solid-query"
 import { Icon } from "@opencode-ai/ui/icon"
 import { createMemo, For, Show } from "solid-js"
 import { createStore } from "solid-js/store"
-import { useServerSDK } from "@/context/server-sdk"
-import { useServerSync } from "@/context/server-sync"
 import { type LocalProject, getAvatarColors } from "@/context/layout"
 import { getFilename } from "@opencode-ai/core/util/path"
 import { Avatar } from "@opencode-ai/ui/avatar"
 import { useLanguage } from "@/context/language"
 import { getProjectAvatarSource } from "@/pages/layout/helpers"
+import { ServerConnection } from "@/context/server"
+import { useGlobal } from "@/context/global"
 
 const AVATAR_COLOR_KEYS = ["pink", "mint", "orange", "purple", "cyan", "lime"] as const
 
-export function DialogEditProject(props: { project: LocalProject }) {
+export function DialogEditProject(props: { project: LocalProject; server: ServerConnection.Any }) {
   const dialog = useDialog()
-  const serverSDK = useServerSDK()
-  const serverSync = useServerSync()
+  const global = useGlobal()
   const language = useLanguage()
+  const serverCtx = createMemo(() => global.createServerCtx(props.server))
+  const serverSDK = () => serverCtx().sdk
+  const serverSync = () => serverCtx().sync
 
   const folderName = createMemo(() => getFilename(props.project.worktree))
   const defaultName = createMemo(() => props.project.name || folderName())
@@ -78,19 +80,19 @@ export function DialogEditProject(props: { project: LocalProject }) {
       const start = store.startup.trim()
 
       if (props.project.id && props.project.id !== "global") {
-        await serverSDK.client.project.update({
+        await serverSDK().client.project.update({
           projectID: props.project.id,
           directory: props.project.worktree,
           name,
           icon: { color: store.color || "", override: store.iconOverride || "" },
           commands: { start },
         })
-        serverSync.project.icon(props.project.worktree, store.iconOverride || undefined)
+        serverSync().project.icon(props.project.worktree, store.iconOverride || undefined)
         dialog.close()
         return
       }
 
-      serverSync.project.meta(props.project.worktree, {
+      serverSync().project.meta(props.project.worktree, {
         name,
         icon: { color: store.color || undefined, override: store.iconOverride || undefined },
         commands: { start: start || undefined },

packages/app/src/components/dialog-fork.tsx

@@ -35,13 +35,13 @@ export const DialogFork: Component = () => {
     const sessionID = params.id
     if (!sessionID) return []
 
-    const msgs = sync.data.message[sessionID] ?? []
+    const msgs = sync().data.message[sessionID] ?? []
     const result: ForkableMessage[] = []
 
     for (const message of msgs) {
       if (message.role !== "user") continue
 
-      const parts = sync.data.part[message.id] ?? []
+      const parts = sync().data.part[message.id] ?? []
       const textPart = parts.find((x): x is SDKTextPart => x.type === "text" && !x.synthetic && !x.ignored)
       if (!textPart) continue
 
@@ -61,15 +61,15 @@ export const DialogFork: Component = () => {
     const sessionID = params.id
     if (!sessionID) return
 
-    const parts = sync.data.part[item.id] ?? []
+    const parts = sync().data.part[item.id] ?? []
     const restored = extractPromptFromParts(parts, {
-      directory: sdk.directory,
+      directory: sdk().directory,
       attachmentName: language.t("common.attachment"),
     })
-    const dir = base64Encode(sdk.directory)
+    const dir = base64Encode(sdk().directory)
 
-    sdk.client.session
-      .fork({ sessionID, messageID: item.id })
+    sdk()
+      .client.session.fork({ sessionID, messageID: item.id })
       .then((forked) => {
         if (!forked.data) {
           showToast({ title: language.t("common.requestFailed") })
@@ -88,7 +88,7 @@ export const DialogFork: Component = () => {
   return (
     <Dialog title={language.t("command.session.fork")}>
       <List
-        class="flex-1 min-h-0 [&_[data-slot=list-scroll]]:flex-1 [&_[data-slot=list-scroll]]:min-h-0"
+        class="flex-1 px-3 min-h-0 [&_[data-slot=list-scroll]]:flex-1 [&_[data-slot=list-scroll]]:min-h-0"
         search={{ placeholder: language.t("common.search.placeholder"), autofocus: true }}
         emptyMessage={language.t("dialog.fork.empty")}
         key={(x) => x.id}

packages/app/src/components/dialog-manage-models.tsx

@@ -39,6 +39,7 @@ export const DialogManageModels: Component = () => {
       }
     >
       <List
+        class="px-3"
         search={{ placeholder: language.t("dialog.model.search.placeholder"), autofocus: true }}
         emptyMessage={language.t("dialog.model.empty")}
         key={(x) => `${x?.provider?.id}:${x?.id}`}

packages/app/src/components/dialog-select-directory-v2.css

@@ -0,0 +1,107 @@
+.directory-picker-v2-body {
+  display: flex;
+  min-height: 0;
+  flex: 1;
+  flex-direction: column;
+  gap: 12px;
+  padding: 2px 16px 0;
+}
+
+.directory-picker-v2-path {
+  position: relative;
+  z-index: 10;
+  display: flex;
+  gap: 8px;
+}
+
+.directory-picker-v2-actions {
+  display: flex;
+  flex-shrink: 0;
+  gap: 2px;
+}
+
+.directory-picker-v2-suggestions {
+  position: absolute;
+  z-index: 20;
+  top: 36px;
+  right: 0;
+  left: 0;
+  display: flex;
+  flex-direction: column;
+  padding: 4px;
+  border: 1px solid var(--v2-border-border-base);
+  border-radius: 6px;
+  background: var(--v2-background-bg-layer-02);
+  box-shadow: var(--v2-elevation-overlay);
+}
+
+.directory-picker-v2-suggestions button {
+  overflow: hidden;
+  padding: 6px 8px;
+  border-radius: 4px;
+  color: var(--v2-text-text-muted);
+  font-size: 12px;
+  text-align: left;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.directory-picker-v2-suggestions button:hover,
+.directory-picker-v2-suggestions button[data-active] {
+  color: var(--v2-text-text-base);
+  background: var(--v2-overlay-simple-overlay-hover);
+}
+
+.directory-picker-v2-browser {
+  position: relative;
+  z-index: 0;
+  isolation: isolate;
+  min-height: 0;
+  flex: 1;
+  overflow: auto;
+  border: 1px solid var(--v2-border-border-base);
+  border-radius: 6px;
+  background: transparent;
+}
+
+.directory-picker-v2-tree {
+  display: block;
+  width: 100%;
+  height: 100%;
+  --trees-bg-override: transparent;
+  --trees-fg-override: var(--v2-text-text-base);
+  --trees-fg-muted-override: var(--v2-text-text-muted);
+  --trees-bg-muted-override: transparent;
+  --trees-selected-bg-override: transparent;
+  --trees-selected-fg-override: var(--v2-text-text-base);
+  --trees-selected-focused-border-color-override: transparent;
+  --trees-focus-ring-color-override: transparent;
+  --trees-focus-ring-width-override: 0px;
+  --trees-focus-ring-offset-override: 0px;
+  --trees-border-color-override: var(--v2-border-border-base);
+  --trees-font-family-override: var(--font-family-sans);
+  --trees-font-size-override: 12px;
+  --trees-item-height: 24px;
+  --trees-border-radius-override: 4px;
+}
+
+.directory-picker-v2-state {
+  position: absolute;
+  z-index: 1;
+  inset: 0;
+  display: grid;
+  place-items: center;
+  color: var(--v2-text-text-muted);
+  font-size: 12px;
+  pointer-events: none;
+}
+
+.directory-picker-v2-selection {
+  overflow: hidden;
+  flex-shrink: 0;
+  color: var(--v2-text-text-muted);
+  font-size: 12px;
+  line-height: 16px;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}

packages/app/src/components/dialog-select-directory-v2.tsx

@@ -0,0 +1,356 @@
+import "@pierre/trees/web-components"
+import { FileTree } from "@pierre/trees"
+import { Dialog, DialogFooter } from "@opencode-ai/ui/v2/dialog-v2"
+import { ButtonV2 } from "@opencode-ai/ui/v2/button-v2"
+import { TextInputV2 } from "@opencode-ai/ui/v2/text-input-v2"
+import { useDialog } from "@opencode-ai/ui/context/dialog"
+import { createEffect, createMemo, createResource, createSignal, For, onCleanup, onMount, Show } from "solid-js"
+import { useGlobal } from "@/context/global"
+import { useLanguage } from "@/context/language"
+import { ServerConnection } from "@/context/server"
+import {
+  absoluteTreePath,
+  activeTreeNavigation,
+  advanceTreePreload,
+  nextSuggestionIndex,
+  nextTreeScrollTop,
+  pickerFileSearchQuery,
+  pickerAbsoluteInput,
+  pickerMode,
+  preloadTreeDirectories,
+  cleanPickerInput,
+  createDirectorySearch,
+  currentPickerSuggestions,
+  displayPickerPath,
+  pickerParent,
+  pickerRoot,
+} from "./directory-picker-domain"
+import "./dialog-select-directory-v2.css"
+
+interface DialogSelectDirectoryV2Props {
+  title?: string
+  multiple?: boolean
+  onSelect: (result: string | string[] | null) => void
+  server: ServerConnection.Any
+  mode?: "directory" | "file"
+  start?: string
+}
+
+export function DialogSelectDirectoryV2(props: DialogSelectDirectoryV2Props) {
+  const global = useGlobal()
+  const { sync, sdk } = global.createServerCtx(props.server)
+  const dialog = useDialog()
+  const language = useLanguage()
+  const policy = pickerMode(props.mode ?? "directory", props.start)
+  const action = {
+    file: language.t("dialog.directory.action.selectFile"),
+    directory: language.t("dialog.directory.action.selectFolder"),
+  }
+  const [root, setRoot] = createSignal("")
+  const [input, setInput] = createSignal("")
+  const [selected, setSelected] = createSignal("")
+  const [suggestionsOpen, setSuggestionsOpen] = createSignal(false)
+  const [activeSuggestion, setActiveSuggestion] = createSignal(-1)
+  const [loading, setLoading] = createSignal(false)
+  const [error, setError] = createSignal(false)
+  const [rootValid, setRootValid] = createSignal(false)
+  const listings = new Map<string, Promise<Array<{ name: string; type: "file" | "directory" }> | undefined>>()
+  const advanced = new Set<string>()
+  let tree: FileTree | undefined
+  let container: HTMLDivElement | undefined
+  let pathArea: HTMLDivElement | undefined
+  let navigation = 0
+
+  const missingBase = createMemo(() => !(sync.data.path.home || sync.data.path.directory))
+  const [fallbackPath] = createResource(
+    () => (missingBase() ? true : undefined),
+    () =>
+      sdk.client.path
+        .get()
+        .then((result) => result.data)
+        .catch(() => undefined),
+    { initialValue: undefined },
+  )
+  const home = createMemo(() => sync.data.path.home || fallbackPath()?.home || "")
+  const start = createMemo(
+    () =>
+      props.start ||
+      sync.data.path.home ||
+      sync.data.path.directory ||
+      fallbackPath()?.home ||
+      fallbackPath()?.directory,
+  )
+  const search = createDirectorySearch({ sdk, home, base: () => root() || start() })
+  const [suggestions] = createResource(input, async (value) => {
+    const typed = cleanPickerInput(value).replace(/\/+$/, "")
+    const current = displayPickerPath(root(), value, home()).replace(/\/+$/, "")
+    if (!typed || typed === current) return { query: value, items: [] }
+    const directories = (await search(value)).map((absolute) => ({ absolute, type: "directory" as const }))
+    if (!policy.includeFiles) return { query: value, items: directories.slice(0, 5) }
+    const files = await sdk.client.find
+      .files({ directory: root(), query: pickerFileSearchQuery(root(), value, home()), type: "file", limit: 20 })
+      .then((result) => result.data ?? [])
+      .catch(() => [])
+    const results = [
+      ...directories,
+      ...files.map((path) => ({ absolute: absoluteTreePath(root(), path), type: "file" as const })),
+    ]
+    return {
+      query: value,
+      items: Array.from(new Map(results.map((result) => [result.absolute, result])).values()).slice(0, 8),
+    }
+  })
+  const currentSuggestions = createMemo(() => currentPickerSuggestions(suggestions(), input()))
+
+  async function load(path: string, generation: number, preload = true) {
+    const key = path.replace(/\/+$/, "")
+    setError(false)
+    const absolute = absoluteTreePath(root(), key)
+    const request =
+      listings.get(key) ??
+      sdk.client.file
+        .list({ directory: absolute, path: "" })
+        .then((result) => result.data ?? [])
+        .catch(() => undefined)
+    listings.set(key, request)
+    const nodes = await request
+    if (!activeTreeNavigation(generation, navigation)) return false
+    if (!nodes) {
+      listings.delete(key)
+      if (!key) setError(true)
+      return false
+    }
+    tree?.batch(policy.entries(key, nodes).map((item) => ({ type: "add", path: item })))
+    if (preload && advanceTreePreload(advanced, key)) {
+      void Promise.all(preloadTreeDirectories(key, nodes).map((directory) => load(directory, generation, false)))
+    }
+    return true
+  }
+
+  async function navigate(path: string) {
+    const value = policy.navigation(pickerAbsoluteInput(cleanPickerInput(path), home(), root() || start() || home()))
+    if (!value) return
+    const token = ++navigation
+    setLoading(true)
+    setRootValid(false)
+    setSelected("")
+    setSuggestionsOpen(false)
+    setActiveSuggestion(-1)
+    setRoot(value)
+    setInput(displayPickerPath(value, value, home()))
+    listings.clear()
+    advanced.clear()
+    tree?.resetPaths([])
+    const valid = await load("", token)
+    if (!activeTreeNavigation(token, navigation)) return
+    setRootValid(valid)
+    setLoading(false)
+  }
+
+  function complete() {
+    const items = currentSuggestions()
+    const match = items[activeSuggestion()] ?? items[0]
+    if (!match) return
+    const value = displayPickerPath(match.absolute, input(), home())
+    setInput(match.type === "directory" && !value.endsWith("/") ? value + "/" : value)
+    if (match.type === "file") {
+      setSelected(policy.selection(root(), pickerFileSearchQuery(root(), match.absolute, home())) ?? "")
+      setSuggestionsOpen(false)
+      setActiveSuggestion(-1)
+    }
+  }
+
+  function chooseSuggestion(suggestion: { absolute: string; type: "file" | "directory" }) {
+    if (suggestion.type === "directory") {
+      void navigate(suggestion.absolute)
+      return
+    }
+    setInput(displayPickerPath(suggestion.absolute, input(), home()))
+    setSelected(policy.selection(root(), pickerFileSearchQuery(root(), suggestion.absolute, home())) ?? "")
+    setSuggestionsOpen(false)
+    setActiveSuggestion(-1)
+  }
+
+  function moveSuggestion(delta: -1 | 1) {
+    setSuggestionsOpen(true)
+    setActiveSuggestion((current) => nextSuggestionIndex(current, delta, currentSuggestions().length))
+  }
+
+  function activeSuggestionValue() {
+    const items = currentSuggestions()
+    return items[activeSuggestion()] ?? items[0]
+  }
+
+  const keyActions: Partial<Record<string, () => void>> = {
+    ArrowDown: () => moveSuggestion(1),
+    ArrowUp: () => moveSuggestion(-1),
+    Enter: () => {
+      const suggestion = activeSuggestionValue()
+      if (suggestion) chooseSuggestion(suggestion)
+      if (!suggestion) void navigate(input())
+    },
+    Tab: complete,
+  }
+
+  function handleInputKey(event: KeyboardEvent) {
+    const action = keyActions[event.key]
+    if (!action) return
+    if (event.key === "Tab" && event.shiftKey) return
+    event.preventDefault()
+    action()
+  }
+
+  function resolve() {
+    const path = policy.result(root(), selected(), rootValid())
+    if (!path) return
+    props.onSelect(props.multiple ? [path] : path)
+    dialog.close()
+  }
+
+  onMount(() => {
+    const closeSuggestions = (event: PointerEvent) => {
+      if (pathArea?.contains(event.target as Node)) return
+      setSuggestionsOpen(false)
+      setActiveSuggestion(-1)
+    }
+    document.addEventListener("pointerdown", closeSuggestions)
+    onCleanup(() => document.removeEventListener("pointerdown", closeSuggestions))
+    tree = new FileTree({
+      paths: [],
+      flattenEmptyDirectories: false,
+      initialExpansion: "closed",
+      stickyFolders: true,
+      unsafeCSS: `
+        button[data-type="item"] {
+          background: transparent !important;
+          box-shadow: none !important;
+        }
+        button[data-type="item"]:hover {
+          background: var(--v2-overlay-simple-overlay-hover) !important;
+        }
+        button[data-type="item"]:focus-visible {
+          outline: none !important;
+          box-shadow: none !important;
+        }
+        [data-file-tree-virtualized-scroll] {
+          overscroll-behavior: contain;
+          scrollbar-width: thin;
+        }
+      `,
+      onExpansionChange(change) {
+        if (change.expanded) void load(change.path, navigation)
+      },
+      onSelectionChange(paths) {
+        const path = paths.at(-1)
+        setSelected(path ? (policy.selection(root(), path) ?? "") : "")
+      },
+    })
+    if (!container) return
+    tree.render({ containerWrapper: container })
+    tree.getFileTreeContainer()?.classList.add("directory-picker-v2-tree")
+  })
+
+  createEffect(() => {
+    const path = start()
+    if (!path || root()) return
+    void navigate(path)
+  })
+
+  onCleanup(() => tree?.cleanUp())
+
+  return (
+    <Dialog title={props.title ?? language.t("command.project.open")} size="large" class="directory-picker-v2">
+      <div class="directory-picker-v2-body">
+        <div class="directory-picker-v2-path" ref={pathArea}>
+          <TextInputV2
+            value={input()}
+            autofocus
+            autocomplete="off"
+            spellcheck={false}
+            class="!w-full"
+            onInput={(event) => {
+              setInput(cleanPickerInput(event.currentTarget.value))
+              setSelected("")
+              setSuggestionsOpen(true)
+              setActiveSuggestion(-1)
+            }}
+            role="combobox"
+            aria-autocomplete="list"
+            aria-expanded={suggestionsOpen()}
+            aria-controls="directory-picker-v2-suggestions"
+            aria-activedescendant={
+              activeSuggestion() >= 0 ? `directory-picker-v2-suggestion-${activeSuggestion()}` : undefined
+            }
+            onKeyDown={handleInputKey}
+          />
+          <div class="directory-picker-v2-actions">
+            <ButtonV2 size="small" variant="ghost" onClick={() => void navigate(home())}>
+              ~
+            </ButtonV2>
+            <ButtonV2 size="small" variant="ghost" onClick={() => void navigate(pickerRoot(root()) || root())}>
+              {language.t("dialog.directory.root")}
+            </ButtonV2>
+            <ButtonV2 size="small" variant="ghost" onClick={() => void navigate(pickerParent(root()))}>
+              {language.t("dialog.directory.parent")}
+            </ButtonV2>
+          </div>
+          <Show when={suggestionsOpen() && currentSuggestions().length > 0}>
+            <div id="directory-picker-v2-suggestions" role="listbox" class="directory-picker-v2-suggestions">
+              <For each={currentSuggestions()}>
+                {(suggestion, index) => (
+                  <button
+                    id={`directory-picker-v2-suggestion-${index()}`}
+                    role="option"
+                    aria-selected={index() === activeSuggestion()}
+                    data-active={index() === activeSuggestion() ? "" : undefined}
+                    onPointerMove={() => setActiveSuggestion(index())}
+                    onClick={() => chooseSuggestion(suggestion)}
+                  >
+                    {displayPickerPath(suggestion.absolute, input(), home())}
+                    {suggestion.type === "directory" ? "/" : ""}
+                  </button>
+                )}
+              </For>
+            </div>
+          </Show>
+        </div>
+        <div
+          class="directory-picker-v2-browser"
+          ref={container}
+          onWheel={(event) => {
+            const scroller = tree
+              ?.getFileTreeContainer()
+              ?.shadowRoot?.querySelector<HTMLElement>("[data-file-tree-virtualized-scroll]")
+            if (!scroller) return
+            const next = nextTreeScrollTop(
+              scroller.scrollTop,
+              event.deltaY,
+              scroller.scrollHeight,
+              scroller.clientHeight,
+            )
+            if (next === scroller.scrollTop) return
+            event.preventDefault()
+            scroller.scrollTop = next
+            scroller.dispatchEvent(new Event("scroll"))
+          }}
+        >
+          <Show when={loading()}>
+            <div class="directory-picker-v2-state">{language.t("common.loading")}</div>
+          </Show>
+          <Show when={!loading() && error()}>
+            <div class="directory-picker-v2-state">{language.t("dialog.directory.readError")}</div>
+          </Show>
+        </div>
+        <div class="directory-picker-v2-selection">{policy.result(root(), selected(), rootValid())}</div>
+      </div>
+      <DialogFooter>
+        <ButtonV2 variant="neutral" onClick={() => dialog.close()}>
+          {language.t("common.cancel")}
+        </ButtonV2>
+        <ButtonV2 variant="contrast" disabled={!policy.result(root(), selected(), rootValid())} onClick={resolve}>
+          {action[policy.action]}
+        </ButtonV2>
+      </DialogFooter>
+    </Dialog>
+  )
+}

packages/app/src/components/dialog-select-directory.tsx

@@ -4,17 +4,17 @@ import { FileIcon } from "@opencode-ai/ui/file-icon"
 import { List } from "@opencode-ai/ui/list"
 import type { ListRef } from "@opencode-ai/ui/list"
 import { getDirectory, getFilename } from "@opencode-ai/core/util/path"
-import fuzzysort from "fuzzysort"
 import { createMemo, createResource, createSignal } from "solid-js"
-import { useServerSDK } from "@/context/server-sdk"
-import { useServerSync } from "@/context/server-sync"
-import { useLayout } from "@/context/layout"
 import { useLanguage } from "@/context/language"
+import { ServerConnection } from "@/context/server"
+import { useGlobal } from "@/context/global"
+import { cleanPickerInput, createDirectorySearch, displayPickerPath } from "./directory-picker-domain"
 
 interface DialogSelectDirectoryProps {
   title?: string
   multiple?: boolean
   onSelect: (result: string | string[] | null) => void
+  server: ServerConnection.Any
 }
 
 type Row = {
@@ -23,89 +23,9 @@ type Row = {
   group: "recent" | "folders"
 }
 
-function cleanInput(value: string) {
-  const first = (value ?? "").split(/\r?\n/)[0] ?? ""
-  return first.replace(/[\u0000-\u001F\u007F]/g, "").trim()
-}
-
-function normalizePath(input: string) {
-  const v = input.replaceAll("\\", "/")
-  if (v.startsWith("//") && !v.startsWith("///")) return "//" + v.slice(2).replace(/\/+/g, "/")
-  return v.replace(/\/+/g, "/")
-}
-
-function normalizeDriveRoot(input: string) {
-  const v = normalizePath(input)
-  if (/^[A-Za-z]:$/.test(v)) return v + "/"
-  return v
-}
-
-function trimTrailing(input: string) {
-  const v = normalizeDriveRoot(input)
-  if (v === "/") return v
-  if (v === "//") return v
-  if (/^[A-Za-z]:\/$/.test(v)) return v
-  return v.replace(/\/+$/, "")
-}
-
-function joinPath(base: string | undefined, rel: string) {
-  const b = trimTrailing(base ?? "")
-  const r = trimTrailing(rel).replace(/^\/+/, "")
-  if (!b) return r
-  if (!r) return b
-  if (b.endsWith("/")) return b + r
-  return b + "/" + r
-}
-
-function rootOf(input: string) {
-  const v = normalizeDriveRoot(input)
-  if (v.startsWith("//")) return "//"
-  if (v.startsWith("/")) return "/"
-  if (/^[A-Za-z]:\//.test(v)) return v.slice(0, 3)
-  return ""
-}
-
-function parentOf(input: string) {
-  const v = trimTrailing(input)
-  if (v === "/") return v
-  if (v === "//") return v
-  if (/^[A-Za-z]:\/$/.test(v)) return v
-
-  const i = v.lastIndexOf("/")
-  if (i <= 0) return "/"
-  if (i === 2 && /^[A-Za-z]:/.test(v)) return v.slice(0, 3)
-  return v.slice(0, i)
-}
-
-function modeOf(input: string) {
-  const raw = normalizeDriveRoot(input.trim())
-  if (!raw) return "relative" as const
-  if (raw.startsWith("~")) return "tilde" as const
-  if (rootOf(raw)) return "absolute" as const
-  return "relative" as const
-}
-
-function tildeOf(absolute: string, home: string) {
-  const full = trimTrailing(absolute)
-  if (!home) return ""
-
-  const hn = trimTrailing(home)
-  const lc = full.toLowerCase()
-  const hc = hn.toLowerCase()
-  if (lc === hc) return "~"
-  if (lc.startsWith(hc + "/")) return "~" + full.slice(hn.length)
-  return ""
-}
-
-function displayPath(path: string, input: string, home: string) {
-  const full = trimTrailing(path)
-  if (modeOf(input) === "absolute") return full
-  return tildeOf(full, home) || full
-}
-
 function toRow(absolute: string, home: string, group: Row["group"]): Row {
-  const full = trimTrailing(absolute)
-  const tilde = tildeOf(full, home)
+  const full = displayPickerPath(absolute, "", "")
+  const tilde = displayPickerPath(full, "~", home)
   const withSlash = (value: string) => {
     if (!value) return ""
     if (value.endsWith("/")) return value
@@ -127,128 +47,9 @@ function uniqueRows(rows: Row[]) {
   })
 }
 
-function useDirectorySearch(args: {
-  sdk: ReturnType<typeof useServerSDK>
-  start: () => string | undefined
-  home: () => string
-}) {
-  const cache = new Map<string, Promise<Array<{ name: string; absolute: string }>>>()
-  let current = 0
-
-  const scoped = (value: string) => {
-    const base = args.start()
-    if (!base) return
-
-    const raw = normalizeDriveRoot(value)
-    if (!raw) return { directory: trimTrailing(base), path: "" }
-
-    const h = args.home()
-    if (raw === "~") return { directory: trimTrailing(h || base), path: "" }
-    if (raw.startsWith("~/")) return { directory: trimTrailing(h || base), path: raw.slice(2) }
-
-    const root = rootOf(raw)
-    if (root) return { directory: trimTrailing(root), path: raw.slice(root.length) }
-    return { directory: trimTrailing(base), path: raw }
-  }
-
-  const dirs = async (dir: string) => {
-    const key = trimTrailing(dir)
-    const existing = cache.get(key)
-    if (existing) return existing
-
-    const request = args.sdk.client.file
-      .list({ directory: key, path: "" })
-      .then((x) => x.data ?? [])
-      .catch(() => [])
-      .then((nodes) =>
-        nodes
-          .filter((n) => n.type === "directory")
-          .map((n) => ({
-            name: n.name,
-            absolute: trimTrailing(normalizeDriveRoot(n.absolute)),
-          })),
-      )
-
-    cache.set(key, request)
-    return request
-  }
-
-  const match = async (dir: string, query: string, limit: number) => {
-    const items = await dirs(dir)
-    if (!query) return items.slice(0, limit).map((x) => x.absolute)
-    return fuzzysort.go(query, items, { key: "name", limit }).map((x) => x.obj.absolute)
-  }
-
-  return async (filter: string) => {
-    const token = ++current
-    const active = () => token === current
-
-    const value = cleanInput(filter)
-    const scopedInput = scoped(value)
-    if (!scopedInput) return [] as string[]
-
-    const raw = normalizeDriveRoot(value)
-    const isPath = raw.startsWith("~") || !!rootOf(raw) || raw.includes("/")
-    const query = normalizeDriveRoot(scopedInput.path)
-
-    const find = () =>
-      args.sdk.client.find
-        .files({ directory: scopedInput.directory, query, type: "directory", limit: 50 })
-        .then((x) => x.data ?? [])
-        .catch(() => [])
-
-    if (!isPath) {
-      const results = await find()
-      if (!active()) return []
-      return results.map((rel) => joinPath(scopedInput.directory, rel)).slice(0, 50)
-    }
-
-    const segments = query.replace(/^\/+/, "").split("/")
-    const head = segments.slice(0, segments.length - 1).filter((x) => x && x !== ".")
-    const tail = segments[segments.length - 1] ?? ""
-
-    const cap = 12
-    const branch = 4
-    let paths = [scopedInput.directory]
-    for (const part of head) {
-      if (!active()) return []
-      if (part === "..") {
-        paths = paths.map(parentOf)
-        continue
-      }
-
-      const next = (await Promise.all(paths.map((p) => match(p, part, branch)))).flat()
-      if (!active()) return []
-      paths = Array.from(new Set(next)).slice(0, cap)
-      if (paths.length === 0) return [] as string[]
-    }
-
-    const out = (await Promise.all(paths.map((p) => match(p, tail, 50)))).flat()
-    if (!active()) return []
-    const deduped = Array.from(new Set(out))
-    const base = raw.startsWith("~") ? trimTrailing(scopedInput.directory) : ""
-    const expand = !raw.endsWith("/")
-    if (!expand || !tail) {
-      const items = base ? Array.from(new Set([base, ...deduped])) : deduped
-      return items.slice(0, 50)
-    }
-
-    const needle = tail.toLowerCase()
-    const exact = deduped.filter((p) => getFilename(p).toLowerCase() === needle)
-    const target = exact[0]
-    if (!target) return deduped.slice(0, 50)
-
-    const children = await match(target, "", 30)
-    if (!active()) return []
-    const items = Array.from(new Set([...deduped, ...children]))
-    return (base ? Array.from(new Set([base, ...items])) : items).slice(0, 50)
-  }
-}
-
 export function DialogSelectDirectory(props: DialogSelectDirectoryProps) {
-  const sync = useServerSync()
-  const sdk = useServerSDK()
-  const layout = useLayout()
+  const global = useGlobal()
+  const { sync, sdk, ...serverCtx } = global.createServerCtx(props.server)
   const dialog = useDialog()
   const language = useLanguage()
 
@@ -272,14 +73,14 @@ export function DialogSelectDirectory(props: DialogSelectDirectoryProps) {
     () => sync.data.path.home || sync.data.path.directory || fallbackPath()?.home || fallbackPath()?.directory,
   )
 
-  const directories = useDirectorySearch({
+  const directories = createDirectorySearch({
     sdk,
     home,
-    start,
+    base: start,
   })
 
   const recentProjects = createMemo(() => {
-    const projects = layout.projects.list()
+    const projects = serverCtx.projects.list()
     const byProject = new Map<string, number>()
 
     for (const project of projects) {
@@ -324,6 +125,7 @@ export function DialogSelectDirectory(props: DialogSelectDirectoryProps) {
   return (
     <Dialog title={props.title ?? language.t("command.project.open")}>
       <List
+        class="px-3"
         search={{ placeholder: language.t("dialog.directory.search.placeholder"), autofocus: true }}
         emptyMessage={language.t("dialog.directory.empty")}
         loadingMessage={language.t("common.loading")}
@@ -339,7 +141,7 @@ export function DialogSelectDirectory(props: DialogSelectDirectoryProps) {
           group.category === "recent" ? language.t("home.recentProjects") : language.t("command.project.open")
         }
         ref={(r) => (list = r)}
-        onFilter={(value) => setFilter(cleanInput(value))}
+        onFilter={(value) => setFilter(cleanPickerInput(value))}
         onKeyEvent={(e, item) => {
           if (e.key !== "Tab") return
           if (e.shiftKey) return
@@ -348,7 +150,7 @@ export function DialogSelectDirectory(props: DialogSelectDirectoryProps) {
           e.preventDefault()
           e.stopPropagation()
 
-          const value = displayPath(item.absolute, filter(), home())
+          const value = displayPickerPath(item.absolute, filter(), home())
           list?.setFilter(value.endsWith("/") ? value : value + "/")
         }}
         onSelect={(path) => {
@@ -357,7 +159,7 @@ export function DialogSelectDirectory(props: DialogSelectDirectoryProps) {
         }}
       >
         {(item) => {
-          const path = displayPath(item.absolute, filter(), home())
+          const path = displayPickerPath(item.absolute, filter(), home())
           if (path === "~") {
             return (
               <div class="w-full flex items-center justify-between rounded-md">

packages/app/src/components/dialog-select-file.tsx

@@ -7,18 +7,25 @@ import { List } from "@opencode-ai/ui/list"
 import { base64Encode } from "@opencode-ai/core/util/encode"
 import { getDirectory, getFilename } from "@opencode-ai/core/util/path"
 import { useNavigate } from "@solidjs/router"
-import { createMemo, createSignal, Match, onCleanup, Show, Switch } from "solid-js"
+import { createMemo, createSignal, lazy, Match, onCleanup, Show, Switch } from "solid-js"
 import { formatKeybind, useCommand, type CommandOption } from "@/context/command"
-import { useServerSDK } from "@/context/server-sdk"
+import { useServerSDK, type ServerSDK } from "@/context/server-sdk"
 import { useServerSync } from "@/context/server-sync"
 import { useLayout } from "@/context/layout"
 import { useFile } from "@/context/file"
 import { useLanguage } from "@/context/language"
+import { usePlatform } from "@/context/platform"
+import { useServer } from "@/context/server"
+import { useSettings } from "@/context/settings"
 import { useSessionLayout } from "@/pages/session/session-layout"
 import { createSessionTabs } from "@/pages/session/helpers"
 import { decode64 } from "@/utils/base64"
 import { getRelativeTime } from "@/utils/time"
 
+const DialogSelectFileV2 = lazy(() =>
+  import("./dialog-select-directory-v2").then((module) => ({ default: module.DialogSelectDirectoryV2 })),
+)
+
 type EntryType = "command" | "file" | "session"
 
 type Entry = {
@@ -175,7 +182,7 @@ function createFileEntries(props: {
 function createSessionEntries(props: {
   workspaces: () => string[]
   label: (directory: string) => string
-  serverSDK: ReturnType<typeof useServerSDK>
+  serverSDK: ServerSDK
   language: ReturnType<typeof useLanguage>
 }) {
   const state: {
@@ -264,6 +271,9 @@ function createSessionEntries(props: {
 export function DialogSelectFile(props: { mode?: DialogSelectFileMode; onOpenFile?: (path: string) => void }) {
   const command = useCommand()
   const language = useLanguage()
+  const platform = usePlatform()
+  const server = useServer()
+  const settings = useSettings()
   const layout = useLayout()
   const file = useFile()
   const dialog = useDialog()
@@ -292,21 +302,21 @@ export function DialogSelectFile(props: { mode?: DialogSelectFileMode; onOpenFil
     if (directory && !dirs.includes(directory)) return [...dirs, directory]
     return dirs
   })
-  const homedir = createMemo(() => serverSync.data.path.home)
+  const homedir = createMemo(() => serverSync().data.path.home)
   const label = (directory: string) => {
     const current = project()
     const kind =
       current && directory === current.worktree
         ? language.t("workspace.type.local")
         : language.t("workspace.type.sandbox")
-    const [store] = serverSync.child(directory, { bootstrap: false })
+    const [store] = serverSync().child(directory, { bootstrap: false })
     const home = homedir()
     const path = home ? directory.replace(home, "~") : directory
     const name = store.vcs?.branch ?? getFilename(directory)
     return `${kind} : ${name || path}`
   }
 
-  const { sessions } = createSessionEntries({ workspaces, label, serverSDK, language })
+  const { sessions } = createSessionEntries({ workspaces, label, serverSDK: serverSDK(), language })
 
   const items = async (text: string) => {
     const query = text.trim()
@@ -383,9 +393,25 @@ export function DialogSelectFile(props: { mode?: DialogSelectFileMode; onOpenFil
     state.cleanup?.()
   })
 
+  if (filesOnly() && platform.platform === "desktop" && settings.general.newLayoutDesigns() && server.current) {
+    return (
+      <DialogSelectFileV2
+        server={server.current}
+        mode="file"
+        start={projectDirectory()}
+        title={language.t("session.header.searchFiles")}
+        onSelect={(result) => {
+          if (typeof result !== "string") return
+          open(result)
+        }}
+      />
+    )
+  }
+
   return (
     <Dialog class="pt-3 pb-0 !max-h-[480px]" transition>
       <List
+        class="px-3"
         search={{
           placeholder: filesOnly()
             ? language.t("session.header.searchFiles")
@@ -398,6 +424,7 @@ export function DialogSelectFile(props: { mode?: DialogSelectFileMode; onOpenFil
         items={items}
         key={(item) => item.id}
         filterKeys={["title", "description", "category"]}
+        skipFilter={(item) => item.type === "file"}
         groupBy={grouped() ? (item) => item.category : () => ""}
         onMove={handleMove}
         onSelect={handleSelect}

packages/app/src/components/dialog-select-mcp.tsx

@@ -1,13 +1,10 @@
-import { useMutation, useQueryClient } from "@tanstack/solid-query"
 import { Component, createMemo, Show } from "solid-js"
 import { useSync } from "@/context/sync"
-import { useSDK } from "@/context/sdk"
 import { Dialog } from "@opencode-ai/ui/dialog"
 import { List } from "@opencode-ai/ui/list"
 import { Switch } from "@opencode-ai/ui/switch"
 import { useLanguage } from "@/context/language"
-import { useQueryOptions } from "@/context/server-sync"
-import { pathKey } from "@/utils/path-key"
+import { useMcpToggle } from "@/context/mcp"
 
 const statusLabels = {
   connected: "mcp.status.connected",
@@ -19,32 +16,15 @@ const statusLabels = {
 
 export const DialogSelectMcp: Component = () => {
   const sync = useSync()
-  const sdk = useSDK()
   const language = useLanguage()
-  const queryClient = useQueryClient()
-  const queryOptions = useQueryOptions()
 
   const items = createMemo(() =>
-    Object.entries(sync.data.mcp ?? {})
+    Object.entries(sync().data.mcp ?? {})
       .map(([name, status]) => ({ name, status: status.status }))
       .sort((a, b) => a.name.localeCompare(b.name)),
   )
 
-  const toggle = useMutation(() => ({
-    mutationFn: async (name: string) => {
-      const status = sync.data.mcp[name]
-      if (status?.status === "connected") {
-        await sdk.client.mcp.disconnect({ name })
-        return
-      }
-      if (status?.status === "needs_auth") {
-        await sdk.client.mcp.auth.authenticate({ name })
-        return
-      }
-      await sdk.client.mcp.connect({ name })
-    },
-    onSuccess: () => queryClient.refetchQueries(queryOptions.mcp(pathKey(sync.directory))),
-  }))
+  const toggle = useMcpToggle()
 
   const enabledCount = createMemo(() => items().filter((i) => i.status === "connected").length)
   const totalCount = createMemo(() => items().length)
@@ -55,6 +35,7 @@ export const DialogSelectMcp: Component = () => {
       description={language.t("dialog.mcp.description", { enabled: enabledCount(), total: totalCount() })}
     >
       <List
+        class="px-3"
         search={{ placeholder: language.t("common.search.placeholder"), autofocus: true }}
         emptyMessage={language.t("dialog.mcp.empty")}
         key={(x) => x?.name ?? ""}
@@ -67,7 +48,7 @@ export const DialogSelectMcp: Component = () => {
         }}
       >
         {(i) => {
-          const mcpStatus = () => sync.data.mcp[i.name]
+          const mcpStatus = () => sync().data.mcp[i.name]
           const status = () => mcpStatus()?.status
           const statusLabel = () => {
             const key = status() ? statusLabels[status() as keyof typeof statusLabels] : undefined

packages/app/src/components/dialog-select-model-unpaid.tsx

@@ -45,7 +45,7 @@ export const DialogSelectModelUnpaid: Component<{ model?: ModelState }> = (props
       <div class="flex flex-col gap-3 px-2.5" onKeyDown={handleKeyDown}>
         <div class="text-14-medium text-text-base px-2.5">{language.t("dialog.model.unpaid.freeModels.title")}</div>
         <List
-          class="[&_[data-slot=list-scroll]]:overflow-visible"
+          class="px-3 [&_[data-slot=list-scroll]]:overflow-visible"
           ref={(ref) => (listRef = ref)}
           items={model.list}
           current={model.current()}
@@ -90,7 +90,7 @@ export const DialogSelectModelUnpaid: Component<{ model?: ModelState }> = (props
             <div class="px-2 text-14-medium text-text-base">{language.t("dialog.model.unpaid.addMore.title")}</div>
             <div class="w-full">
               <List
-                class="w-full px-0"
+                class="w-full px-3"
                 key={(p) => p.id}
                 items={providers.popular}
                 activeIcon="plus-small"

packages/app/src/components/dialog-select-model.tsx

@@ -37,7 +37,7 @@ const ModelList: Component<{
 
   return (
     <List
-      class={`flex-1 min-h-0 [&_[data-slot=list-scroll]]:flex-1 [&_[data-slot=list-scroll]]:min-h-0 ${props.class ?? ""}`}
+      class={`flex-1 px-3 min-h-0 [&_[data-slot=list-scroll]]:flex-1 [&_[data-slot=list-scroll]]:min-h-0 ${props.class ?? ""}`}
       search={{ placeholder: language.t("dialog.model.search.placeholder"), autofocus: true, action: props.action }}
       emptyMessage={language.t("dialog.model.empty")}
       key={(x) => `${x.provider.id}:${x.id}`}

packages/app/src/components/dialog-select-provider.tsx

@@ -29,6 +29,7 @@ export const DialogSelectProvider: Component = () => {
   return (
     <Dialog title={language.t("command.provider.connect")} transition>
       <List
+        class="px-3"
         search={{ placeholder: language.t("dialog.provider.search.placeholder"), autofocus: true }}
         emptyMessage={language.t("dialog.provider.empty")}
         activeIcon="plus-small"

packages/app/src/components/dialog-select-server.tsx

@@ -9,13 +9,16 @@ import { TextField } from "@opencode-ai/ui/text-field"
 import { useMutation } from "@tanstack/solid-query"
 import { showToast } from "@/utils/toast"
 import { useNavigate } from "@solidjs/router"
-import { createEffect, createMemo, createResource, onCleanup, Show } from "solid-js"
-import { createStore, reconcile } from "solid-js/store"
+import { createEffect, createMemo, createResource, Show } from "solid-js"
+import { createStore } from "solid-js/store"
 import { ServerHealthIndicator, ServerRow } from "@/components/server/server-row"
+import { useGlobal } from "@/context/global"
 import { useLanguage } from "@/context/language"
 import { usePlatform } from "@/context/platform"
 import { normalizeServerUrl, ServerConnection, useServer } from "@/context/server"
 import { type ServerHealth, useCheckServerHealth } from "@/utils/server-health"
+import { useSettings } from "@/context/settings"
+import { useTabs } from "@/context/tabs"
 
 const DEFAULT_USERNAME = "opencode"
 
@@ -71,7 +74,7 @@ function useDefaultServer() {
     }
   }
 
-  return { defaultKey, canDefault, setDefault }
+  return { defaultKey: () => defaultKey.latest, canDefault, setDefault }
 }
 
 function useServerPreview() {
@@ -121,7 +124,7 @@ function ServerForm(props: ServerFormProps) {
   }
 
   return (
-    <div class="px-5">
+    <div>
       <div class="bg-surface-base rounded-md p-5 flex flex-col gap-3">
         <div class="flex-1 min-w-0 [&_[data-slot=input-wrapper]]:relative">
           <TextField
@@ -172,16 +175,31 @@ function ServerForm(props: ServerFormProps) {
 }
 
 export function DialogSelectServer() {
-  const navigate = useNavigate()
   const dialog = useDialog()
+  const controller = useServerManagementController({ onSelect: dialog.close })
+
+  return (
+    <Dialog title={controller.formTitle()}>
+      <div class="flex flex-1 min-h-0 flex-col px-5">
+        <Show when={controller.isFormMode()} fallback={<ServerConnectionList controller={controller} />}>
+          <ServerConnectionForm controller={controller} />
+        </Show>
+      </div>
+    </Dialog>
+  )
+}
+
+export function useServerManagementController(options: { onSelect?: () => void; navigateOnAdd?: boolean } = {}) {
+  const navigate = useNavigate()
   const server = useServer()
+  const tabs = useTabs()
+  const global = useGlobal()
   const platform = usePlatform()
   const language = useLanguage()
   const { defaultKey, canDefault, setDefault } = useDefaultServer()
   const { previewStatus } = useServerPreview()
   const checkServerHealth = useCheckServerHealth()
   const [store, setStore] = createStore({
-    status: {} as Record<ServerConnection.Key, ServerHealth | undefined>,
     addServer: {
       url: "",
       name: "",
@@ -247,6 +265,11 @@ export function DialogSelectServer() {
       }
 
       resetAdd()
+      if (options.navigateOnAdd === false) {
+        server.add(conn)
+        options.onSelect?.()
+        return
+      }
       await select(conn, true)
     },
   }))
@@ -295,12 +318,14 @@ export function DialogSelectServer() {
   }))
 
   const replaceServer = (original: ServerConnection.Http, next: ServerConnection.Http) => {
+    const originalKey = ServerConnection.key(original)
     const active = server.key
+    tabs.removeServer(originalKey)
     const newConn = server.add(next)
     if (!newConn) return
-    const nextActive = active === ServerConnection.key(original) ? ServerConnection.key(newConn) : active
+    const nextActive = active === originalKey ? ServerConnection.key(newConn) : active
     if (nextActive) server.setActive(nextActive)
-    server.remove(ServerConnection.key(original))
+    server.remove(originalKey)
   }
 
   const items = createMemo(() => {
@@ -311,7 +336,12 @@ export function DialogSelectServer() {
     return [current, ...list.filter((x) => x !== current)]
   })
 
-  const current = createMemo(() => items().find((x) => ServerConnection.key(x) === server.key) ?? items()[0])
+  const settings = useSettings()
+  const current = createMemo<ServerConnection.Any | undefined>(() =>
+    settings.general.newLayoutDesigns()
+      ? undefined
+      : (items().find((x) => ServerConnection.key(x) === server.key) ?? items()[0]),
+  )
 
   const sortedItems = createMemo(() => {
     const list = items()
@@ -326,32 +356,16 @@ export function DialogSelectServer() {
     return list.slice().sort((a, b) => {
       if (a === active) return -1
       if (b === active) return 1
-      const diff = rank(store.status[ServerConnection.key(a)]) - rank(store.status[ServerConnection.key(b)])
+      const diff =
+        rank(global.servers.health[ServerConnection.key(a)]) - rank(global.servers.health[ServerConnection.key(b)])
       if (diff !== 0) return diff
       return (order.get(a) ?? 0) - (order.get(b) ?? 0)
     })
   })
 
-  async function refreshHealth() {
-    const results: Record<ServerConnection.Key, ServerHealth> = {}
-    await Promise.all(
-      items().map(async (conn) => {
-        results[ServerConnection.key(conn)] = await checkServerHealth(conn.http)
-      }),
-    )
-    setStore("status", reconcile(results))
-  }
-
-  createEffect(() => {
-    items()
-    void refreshHealth()
-    const interval = setInterval(refreshHealth, 10_000)
-    onCleanup(() => clearInterval(interval))
-  })
-
   async function select(conn: ServerConnection.Any, persist?: boolean) {
-    if (!persist && store.status[ServerConnection.key(conn)]?.healthy === false) return
-    dialog.close()
+    if (!persist && global.servers.health[ServerConnection.key(conn)]?.healthy === false) return
+    options.onSelect?.()
     if (persist && conn.type === "http") {
       server.add(conn)
       navigate("/")
@@ -457,7 +471,7 @@ export function DialogSelectServer() {
       username: conn.http.username ?? "",
       password: conn.http.password ?? "",
       error: "",
-      status: store.status[ServerConnection.key(conn)]?.healthy,
+      status: global.servers.health[ServerConnection.key(conn)]?.healthy,
     })
   }
 
@@ -495,155 +509,196 @@ export function DialogSelectServer() {
     resetEdit()
   })
 
-  async function handleRemove(url: ServerConnection.Key) {
-    server.remove(url)
-    if ((await platform.getDefaultServer?.()) === url) {
-      void platform.setDefaultServer?.(null)
+  async function handleRemove(key: ServerConnection.Key) {
+    try {
+      if (key.startsWith("wsl:")) await platform.wslServers?.removeServer(key)
+      tabs.removeServer(key)
+      server.remove(key)
+      if ((await platform.getDefaultServer?.()) === key) {
+        await setDefault(null)
+      }
+    } catch (err) {
+      showRequestError(language, err)
     }
   }
 
+  return {
+    defaultKey,
+    canDefault,
+    current,
+    sortedItems,
+    status: () => global.servers.health,
+    isFormMode,
+    isAddMode,
+    formTitle,
+    formBusy,
+    formValue: () => (isAddMode() ? store.addServer.url : store.editServer.value),
+    formName: () => (isAddMode() ? store.addServer.name : store.editServer.name),
+    formUsername: () => (isAddMode() ? store.addServer.username : store.editServer.username),
+    formPassword: () => (isAddMode() ? store.addServer.password : store.editServer.password),
+    formError: () => (isAddMode() ? store.addServer.error : store.editServer.error),
+    formStatus: () => (isAddMode() ? store.addServer.status : store.editServer.status),
+    select,
+    setDefault,
+    startAdd,
+    startEdit,
+    resetForm,
+    submitForm,
+    handleRemove,
+    handleFormChange: () => (isAddMode() ? handleAddChange : handleEditChange),
+    handleFormNameChange: () => (isAddMode() ? handleAddNameChange : handleEditNameChange),
+    handleFormUsernameChange: () => (isAddMode() ? handleAddUsernameChange : handleEditUsernameChange),
+    handleFormPasswordChange: () => (isAddMode() ? handleAddPasswordChange : handleEditPasswordChange),
+  }
+}
+
+export function ServerConnectionList(props: { controller: ReturnType<typeof useServerManagementController> }) {
+  const language = useLanguage()
+  const settings = useSettings()
+
   return (
-    <Dialog title={formTitle()}>
-      <div class="flex flex-1 min-h-0 flex-col gap-2">
-        <Show
-          when={!isFormMode()}
-          fallback={
-            <ServerForm
-              value={isAddMode() ? store.addServer.url : store.editServer.value}
-              name={isAddMode() ? store.addServer.name : store.editServer.name}
-              username={isAddMode() ? store.addServer.username : store.editServer.username}
-              password={isAddMode() ? store.addServer.password : store.editServer.password}
-              placeholder={language.t("dialog.server.add.placeholder")}
-              busy={formBusy()}
-              error={isAddMode() ? store.addServer.error : store.editServer.error}
-              status={isAddMode() ? store.addServer.status : store.editServer.status}
-              onChange={isAddMode() ? handleAddChange : handleEditChange}
-              onNameChange={isAddMode() ? handleAddNameChange : handleEditNameChange}
-              onUsernameChange={isAddMode() ? handleAddUsernameChange : handleEditUsernameChange}
-              onPasswordChange={isAddMode() ? handleAddPasswordChange : handleEditPasswordChange}
-              onSubmit={submitForm}
-              onBack={resetForm}
-            />
-          }
+    <div class="flex flex-1 min-h-0 flex-col gap-4">
+      <List
+        class="flex-1 min-h-0 [&_[data-slot=list-search-wrapper]]:w-full [&_[data-slot=list-scroll]]:flex-1 [&_[data-slot=list-scroll]]:overflow-y-auto [&_[data-slot=list-items]]:bg-surface-base [&_[data-slot=list-items]]:rounded-md [&_[data-slot=list-item]]:min-h-14 [&_[data-slot=list-item]]:p-3 [&_[data-slot=list-item]]:!bg-transparent"
+        search={{
+          placeholder: language.t("dialog.server.search.placeholder"),
+          autofocus: false,
+        }}
+        noInitialSelection
+        emptyMessage={language.t("dialog.server.empty")}
+        items={props.controller.sortedItems}
+        key={(x) => x.http.url}
+        onSelect={(x) => {
+          if (x && !settings.general.newLayoutDesigns()) void props.controller.select(x)
+        }}
+        divider={true}
+      >
+        {(i) => {
+          const key = ServerConnection.key(i)
+          return (
+            <div class="flex items-center gap-3 min-w-0 flex-1 w-full group/item">
+              <div class="flex flex-col h-full items-center w-5">
+                <ServerHealthIndicator health={props.controller.status()[key]} />
+              </div>
+              <ServerRow
+                conn={i}
+                dimmed={props.controller.status()[key]?.healthy === false}
+                status={props.controller.status()[key]}
+                class="flex items-center gap-3 min-w-0 flex-1"
+                badge={
+                  <Show when={props.controller.defaultKey() === ServerConnection.key(i)}>
+                    <span class="text-text-base bg-surface-base text-14-regular px-1.5 rounded-xs">
+                      {language.t("dialog.server.status.default")}
+                    </span>
+                  </Show>
+                }
+                showCredentials
+              />
+              <div class="flex items-center justify-center gap-4 pl-4">
+                <Show when={props.controller.current() && ServerConnection.key(props.controller.current()!) === key}>
+                  <Icon name="check" class="h-6" />
+                </Show>
+
+                <Show when={i.type === "http"}>
+                  <DropdownMenu>
+                    <DropdownMenu.Trigger
+                      as={IconButton}
+                      icon="dot-grid"
+                      variant="ghost"
+                      class="shrink-0 size-8 hover:bg-surface-base-hover data-[expanded]:bg-surface-base-active"
+                      onClick={(e: MouseEvent) => e.stopPropagation()}
+                      onPointerDown={(e: PointerEvent) => e.stopPropagation()}
+                    />
+                    <DropdownMenu.Portal>
+                      <DropdownMenu.Content class="mt-1">
+                        <DropdownMenu.Item
+                          onSelect={() => {
+                            if (i.type !== "http") return
+                            props.controller.startEdit(i)
+                          }}
+                        >
+                          <DropdownMenu.ItemLabel>{language.t("dialog.server.menu.edit")}</DropdownMenu.ItemLabel>
+                        </DropdownMenu.Item>
+                        <Show when={props.controller.canDefault() && props.controller.defaultKey() !== key}>
+                          <DropdownMenu.Item onSelect={() => props.controller.setDefault(key)}>
+                            <DropdownMenu.ItemLabel>{language.t("dialog.server.menu.default")}</DropdownMenu.ItemLabel>
+                          </DropdownMenu.Item>
+                        </Show>
+                        <Show when={props.controller.canDefault() && props.controller.defaultKey() === key}>
+                          <DropdownMenu.Item onSelect={() => props.controller.setDefault(null)}>
+                            <DropdownMenu.ItemLabel>
+                              {language.t("dialog.server.menu.defaultRemove")}
+                            </DropdownMenu.ItemLabel>
+                          </DropdownMenu.Item>
+                        </Show>
+                        <DropdownMenu.Separator />
+                        <DropdownMenu.Item
+                          onSelect={() => props.controller.handleRemove(ServerConnection.key(i))}
+                          class="text-text-on-critical-base hover:bg-surface-critical-weak"
+                        >
+                          <DropdownMenu.ItemLabel>{language.t("dialog.server.menu.delete")}</DropdownMenu.ItemLabel>
+                        </DropdownMenu.Item>
+                      </DropdownMenu.Content>
+                    </DropdownMenu.Portal>
+                  </DropdownMenu>
+                </Show>
+              </div>
+            </div>
+          )
+        }}
+      </List>
+
+      <div class="shrink-0 pb-5">
+        <Button
+          variant="secondary"
+          icon="plus-small"
+          size="large"
+          onClick={props.controller.startAdd}
+          class="py-1.5 pl-1.5 pr-3 flex items-center gap-1.5"
         >
-          <List
-            search={{
-              placeholder: language.t("dialog.server.search.placeholder"),
-              autofocus: false,
-            }}
-            noInitialSelection
-            emptyMessage={language.t("dialog.server.empty")}
-            items={sortedItems}
-            key={(x) => x.http.url}
-            onSelect={(x) => {
-              if (x) void select(x)
-            }}
-            divider={true}
-            class="flex-1 min-h-0 px-5 [&_[data-slot=list-search-wrapper]]:w-full [&_[data-slot=list-scroll]]:flex-1 [&_[data-slot=list-scroll]]:overflow-y-auto [&_[data-slot=list-items]]:bg-surface-base [&_[data-slot=list-items]]:rounded-md [&_[data-slot=list-item]]:min-h-14 [&_[data-slot=list-item]]:p-3 [&_[data-slot=list-item]]:!bg-transparent"
-          >
-            {(i) => {
-              const key = ServerConnection.key(i)
-              return (
-                <div class="flex items-center gap-3 min-w-0 flex-1 w-full group/item">
-                  <div class="flex flex-col h-full items-start w-5">
-                    <ServerHealthIndicator health={store.status[key]} />
-                  </div>
-                  <ServerRow
-                    conn={i}
-                    dimmed={store.status[key]?.healthy === false}
-                    status={store.status[key]}
-                    class="flex items-center gap-3 min-w-0 flex-1"
-                    badge={
-                      <Show when={defaultKey() === ServerConnection.key(i)}>
-                        <span class="text-text-base bg-surface-base text-14-regular px-1.5 rounded-xs">
-                          {language.t("dialog.server.status.default")}
-                        </span>
-                      </Show>
-                    }
-                    showCredentials
-                  />
-                  <div class="flex items-center justify-center gap-4 pl-4">
-                    <Show when={ServerConnection.key(current()) === key}>
-                      <Icon name="check" class="h-6" />
-                    </Show>
-
-                    <Show when={i.type === "http"}>
-                      <DropdownMenu>
-                        <DropdownMenu.Trigger
-                          as={IconButton}
-                          icon="dot-grid"
-                          variant="ghost"
-                          class="shrink-0 size-8 hover:bg-surface-base-hover data-[expanded]:bg-surface-base-active"
-                          onClick={(e: MouseEvent) => e.stopPropagation()}
-                          onPointerDown={(e: PointerEvent) => e.stopPropagation()}
-                        />
-                        <DropdownMenu.Portal>
-                          <DropdownMenu.Content class="mt-1">
-                            <DropdownMenu.Item
-                              onSelect={() => {
-                                if (i.type !== "http") return
-                                startEdit(i)
-                              }}
-                            >
-                              <DropdownMenu.ItemLabel>{language.t("dialog.server.menu.edit")}</DropdownMenu.ItemLabel>
-                            </DropdownMenu.Item>
-                            <Show when={canDefault() && defaultKey() !== key}>
-                              <DropdownMenu.Item onSelect={() => setDefault(key)}>
-                                <DropdownMenu.ItemLabel>
-                                  {language.t("dialog.server.menu.default")}
-                                </DropdownMenu.ItemLabel>
-                              </DropdownMenu.Item>
-                            </Show>
-                            <Show when={canDefault() && defaultKey() === key}>
-                              <DropdownMenu.Item onSelect={() => setDefault(null)}>
-                                <DropdownMenu.ItemLabel>
-                                  {language.t("dialog.server.menu.defaultRemove")}
-                                </DropdownMenu.ItemLabel>
-                              </DropdownMenu.Item>
-                            </Show>
-                            <DropdownMenu.Separator />
-                            <DropdownMenu.Item
-                              onSelect={() => handleRemove(ServerConnection.key(i))}
-                              class="text-text-on-critical-base hover:bg-surface-critical-weak"
-                            >
-                              <DropdownMenu.ItemLabel>{language.t("dialog.server.menu.delete")}</DropdownMenu.ItemLabel>
-                            </DropdownMenu.Item>
-                          </DropdownMenu.Content>
-                        </DropdownMenu.Portal>
-                      </DropdownMenu>
-                    </Show>
-                  </div>
-                </div>
-              )
-            }}
-          </List>
-        </Show>
-
-        <div class="shrink-0 px-5 pb-5">
-          <Show
-            when={isFormMode()}
-            fallback={
-              <Button
-                variant="secondary"
-                icon="plus-small"
-                size="large"
-                onClick={startAdd}
-                class="py-1.5 pl-1.5 pr-3 flex items-center gap-1.5"
-              >
-                {language.t("dialog.server.add.button")}
-              </Button>
-            }
-          >
-            <Button variant="primary" size="large" onClick={submitForm} disabled={formBusy()} class="px-3 py-1.5">
-              {formBusy()
-                ? language.t("dialog.server.add.checking")
-                : isAddMode()
-                  ? language.t("dialog.server.add.button")
-                  : language.t("common.save")}
-            </Button>
-          </Show>
-        </div>
+          {language.t("dialog.server.add.button")}
+        </Button>
       </div>
-    </Dialog>
+    </div>
+  )
+}
+
+export function ServerConnectionForm(props: { controller: ReturnType<typeof useServerManagementController> }) {
+  const language = useLanguage()
+
+  return (
+    <div class="flex flex-1 min-h-0 flex-col gap-4">
+      <ServerForm
+        value={props.controller.formValue()}
+        name={props.controller.formName()}
+        username={props.controller.formUsername()}
+        password={props.controller.formPassword()}
+        placeholder={language.t("dialog.server.add.placeholder")}
+        busy={props.controller.formBusy()}
+        error={props.controller.formError()}
+        status={props.controller.formStatus()}
+        onChange={props.controller.handleFormChange()}
+        onNameChange={props.controller.handleFormNameChange()}
+        onUsernameChange={props.controller.handleFormUsernameChange()}
+        onPasswordChange={props.controller.handleFormPasswordChange()}
+        onSubmit={props.controller.submitForm}
+        onBack={props.controller.resetForm}
+      />
+      <div class="shrink-0 pb-5">
+        <Button
+          variant="primary"
+          size="large"
+          onClick={props.controller.submitForm}
+          disabled={props.controller.formBusy()}
+          class="px-3 py-1.5"
+        >
+          {props.controller.formBusy()
+            ? language.t("dialog.server.add.checking")
+            : props.controller.isAddMode()
+              ? language.t("dialog.server.add.button")
+              : language.t("common.save")}
+        </Button>
+      </div>
+    </div>
   )
 }

packages/app/src/components/dialog-settings.tsx

@@ -8,6 +8,7 @@ import { SettingsGeneral } from "./settings-general"
 import { SettingsKeybinds } from "./settings-keybinds"
 import { SettingsProviders } from "./settings-providers"
 import { SettingsModels } from "./settings-models"
+import { SettingsServers } from "./settings-servers"
 
 export const DialogSettings: Component = () => {
   const language = useLanguage()
@@ -17,7 +18,7 @@ export const DialogSettings: Component = () => {
     <Dialog size="x-large" transition>
       <Tabs orientation="vertical" variant="settings" defaultValue="general" class="h-full settings-dialog">
         <Tabs.List>
-          <div class="flex flex-col justify-between h-full w-full">
+          <div class="flex flex-col justify-between h-full w-full gap-4">
             <div class="flex flex-col gap-3 w-full pt-3">
               <div class="flex flex-col gap-3">
                 <div class="flex flex-col gap-1.5">
@@ -31,6 +32,10 @@ export const DialogSettings: Component = () => {
                       <Icon name="keyboard" />
                       {language.t("settings.tab.shortcuts")}
                     </Tabs.Trigger>
+                    <Tabs.Trigger value="servers">
+                      <Icon name="server" />
+                      {language.t("status.popover.tab.servers")}
+                    </Tabs.Trigger>
                   </div>
                 </div>
 
@@ -61,6 +66,9 @@ export const DialogSettings: Component = () => {
         <Tabs.Content value="shortcuts" class="no-scrollbar">
           <SettingsKeybinds />
         </Tabs.Content>
+        <Tabs.Content value="servers" class="no-scrollbar">
+          <SettingsServers />
+        </Tabs.Content>
         <Tabs.Content value="providers" class="no-scrollbar">
           <SettingsProviders />
         </Tabs.Content>

packages/app/src/components/directory-picker-domain.test.ts

@@ -0,0 +1,189 @@
+import { expect, test } from "bun:test"
+import {
+  absoluteTreePath,
+  activeTreeNavigation,
+  advanceTreePreload,
+  nextSuggestionIndex,
+  nextTreeScrollTop,
+  pickerTreeEntries,
+  pickerSearchEntries,
+  pickerFileSearchQuery,
+  pickerMode,
+  preloadTreeDirectories,
+  selectedTreePath,
+  treeEntries,
+  treePathWithin,
+  currentPickerSuggestions,
+  createDirectorySearch,
+  displayPickerPath,
+  pickerParent,
+  pickerRoot,
+  pickerAbsoluteInput,
+} from "./directory-picker-domain"
+
+test("maps server directory entries into Pierre paths", () => {
+  expect(
+    treeEntries("src/", [
+      { name: "components", type: "directory" },
+      { name: "index.ts", type: "file" },
+    ]),
+  ).toEqual(["src/components/", "src/index.ts"])
+})
+
+test("maps Pierre paths back to the selected server root", () => {
+  expect(absoluteTreePath("C:/Users/luke", "src/components/")).toBe("C:/Users/luke/src/components")
+  expect(absoluteTreePath("C:/", "")).toBe("C:/")
+  expect(absoluteTreePath("C:/", "README.md")).toBe("C:/README.md")
+  expect(absoluteTreePath("/home/luke", "README.md")).toBe("/home/luke/README.md")
+})
+
+test("includes files only when the picker selects files", () => {
+  const nodes = [
+    { name: "components", type: "directory" as const },
+    { name: "index.ts", type: "file" as const },
+  ]
+  expect(pickerTreeEntries("", nodes, "directory")).toEqual(["components/"])
+  expect(pickerTreeEntries("", nodes, "file")).toEqual(["components/", "index.ts"])
+})
+
+test("includes files in file autocomplete while preserving directory navigation", () => {
+  const nodes = [
+    { name: "src", absolute: "/repo/src", type: "directory" as const },
+    { name: "README.md", absolute: "/repo/README.md", type: "file" as const },
+  ]
+  expect(pickerSearchEntries(nodes, "directory")).toEqual([nodes[0]])
+  expect(pickerSearchEntries(nodes, "file")).toEqual(nodes)
+})
+
+test("centralizes file and directory selection policy", () => {
+  const file = pickerMode("file", "/repo")
+  expect(file.includeFiles).toBeTrue()
+  expect(file.selection("/repo/src", "index.ts")).toBe("src/index.ts")
+  expect(file.selection("/repo", "src/")).toBeUndefined()
+  expect(file.result("/repo", "src/index.ts")).toBe("src/index.ts")
+  expect(file.selection("/tmp", "example.txt")).toBeUndefined()
+  expect(file.navigation("/repo/src")).toBe("/repo/src")
+  expect(file.navigation("/tmp")).toBeUndefined()
+
+  const directory = pickerMode("directory")
+  expect(directory.includeFiles).toBeFalse()
+  expect(directory.selection("/repo", "src/")).toBe("/repo/src")
+  expect(directory.selection("C:/Users/luke", "repos/")).toBe("C:\\Users\\luke\\repos")
+  expect(directory.selection("//Server/Share", "repo/")).toBe("\\\\Server\\Share\\repo")
+  expect(directory.navigation("/tmp")).toBe("/tmp")
+  expect(directory.result("/repo", "")).toBe("/repo")
+  expect(directory.result("C:/Users/luke", "")).toBe("C:\\Users\\luke")
+  expect(directory.result("//Server/Share/repo", "")).toBe("\\\\Server\\Share\\repo")
+  expect(directory.result("/repo", "", false)).toBeUndefined()
+})
+
+test("accepts mutations only from the active navigation", () => {
+  expect(activeTreeNavigation(3, 3)).toBeTrue()
+  expect(activeTreeNavigation(2, 3)).toBeFalse()
+})
+
+test("preserves POSIX case while matching Windows drives case-insensitively", () => {
+  expect(treePathWithin("/repo", "/Repo")).toBeFalse()
+  expect(treePathWithin("C:/Repo", "c:/repo/src")).toBeTrue()
+  expect(treePathWithin("//Server/Share/Repo", "//server/share/repo/src")).toBeTrue()
+  expect(pickerMode("file", "//Server/Share/Repo").selection("//server/share/repo/src", "file.ts")).toBe("src/file.ts")
+  expect(treePathWithin("/repo", "/repo/../tmp")).toBeFalse()
+  expect(treePathWithin("/", "/src")).toBeTrue()
+  expect(pickerMode("file", "C:/Repo").selection("c:/repo/src", "file.ts")).toBe("src/file.ts")
+  expect(pickerMode("file", "C:/").selection("C:/", "file.ts")).toBe("file.ts")
+})
+
+test("displays paths using the selected server path format", () => {
+  expect(displayPickerPath("C:/Users/luke/repos", "C:/Users/luke/repos", "C:/Users/luke")).toBe(
+    "C:\\Users\\luke\\repos",
+  )
+  expect(displayPickerPath("C:/Users/luke/repos", "C:\\Users\\luke\\repos", "C:/Users/luke")).toBe(
+    "C:\\Users\\luke\\repos",
+  )
+  expect(displayPickerPath("/home/luke/repos", "repos", "/home/luke")).toBe("~/repos")
+  expect(displayPickerPath("/home/luke/repos", "~/repos", "/home/luke")).toBe("~/repos")
+})
+
+test("treats the server share prefix as the UNC root", () => {
+  expect(pickerRoot("//Server/Share/repo/src")).toBe("//Server/Share")
+  expect(pickerRoot("\\\\Server\\Share\\repo\\src")).toBe("//Server/Share")
+  expect(pickerParent("//Server/Share")).toBe("//Server/Share")
+  expect(pickerParent("//Server/Share/repo")).toBe("//Server/Share")
+})
+
+test("resolves relative input against the current picker root", () => {
+  expect(pickerAbsoluteInput("src", "/home/luke", "/home/luke/repo")).toBe("/home/luke/repo/src")
+  expect(pickerAbsoluteInput("../other", "/home/luke", "/home/luke/repo")).toBe("/home/luke/other")
+  expect(pickerAbsoluteInput("~/.config", "/home/luke", "/home/luke/repo")).toBe("/home/luke/.config")
+  expect(pickerAbsoluteInput("src", "C:/Users/luke", "C:/Users/luke/repo")).toBe("C:/Users/luke/repo/src")
+})
+
+test("exposes autocomplete results only for their source query", () => {
+  const result = { query: "/repo/src", items: ["/repo/src/index.ts"] }
+  expect(currentPickerSuggestions(result, "/repo/src")).toEqual(result.items)
+  expect(currentPickerSuggestions(result, "/repo/test")).toEqual([])
+})
+
+test("scopes file autocomplete to the current browser root", () => {
+  expect(pickerFileSearchQuery("/home/luke/repos", "/home/luke/repos/src/in", "/home/luke")).toBe("src/in")
+  expect(pickerFileSearchQuery("/home/luke", "~/repos/op", "/home/luke")).toBe("repos/op")
+})
+
+test("resolves directory autocomplete from the current browser root", async () => {
+  const directories: string[] = []
+  const sdk = {
+    client: {
+      find: {
+        files: (input: { directory: string }) => {
+          directories.push(input.directory)
+          return Promise.resolve({ data: [] })
+        },
+      },
+    },
+  } as unknown as Parameters<typeof createDirectorySearch>[0]["sdk"]
+  let base = "/repo"
+  const search = createDirectorySearch({ sdk, home: () => "/home/luke", base: () => base })
+
+  await search("components")
+  base = "/repo/src"
+  await search("components")
+
+  expect(directories).toEqual(["/repo", "/repo/src"])
+})
+
+test("identifies the next directory level to preload", () => {
+  expect(
+    preloadTreeDirectories("src/", [
+      { name: "components", type: "directory" },
+      { name: "index.ts", type: "file" },
+      { name: "utils", type: "directory" },
+    ]),
+  ).toEqual(["src/components/", "src/utils/"])
+})
+
+test("advances preloading once for every expanded directory", () => {
+  const advanced = new Set<string>()
+  expect(advanceTreePreload(advanced, "")).toBeTrue()
+  expect(advanceTreePreload(advanced, "")).toBeFalse()
+  expect(advanceTreePreload(advanced, "repos/")).toBeTrue()
+})
+
+test("clamps bridged tree wheel scrolling", () => {
+  expect(nextTreeScrollTop(100, 40, 500, 200)).toBe(140)
+  expect(nextTreeScrollTop(10, -40, 500, 200)).toBe(0)
+  expect(nextTreeScrollTop(290, 40, 500, 200)).toBe(300)
+})
+
+test("wraps autocomplete keyboard navigation", () => {
+  expect(nextSuggestionIndex(-1, 1, 4)).toBe(0)
+  expect(nextSuggestionIndex(3, 1, 4)).toBe(0)
+  expect(nextSuggestionIndex(0, -1, 4)).toBe(3)
+  expect(nextSuggestionIndex(0, 1, 0)).toBe(-1)
+})
+
+test("returns absolute directories and relative files", () => {
+  expect(selectedTreePath("/home/luke/repo", "src/", "directory")).toBe("/home/luke/repo/src")
+  expect(selectedTreePath("/home/luke/repo", "src/index.ts", "file")).toBe("src/index.ts")
+  expect(selectedTreePath("/home/luke/repo/src", "index.ts", "file", "/home/luke/repo")).toBe("src/index.ts")
+  expect(selectedTreePath("/home/luke/repo", "src/", "file")).toBeUndefined()
+})

packages/app/src/components/directory-picker-domain.ts

@@ -0,0 +1,331 @@
+export function treeEntries(parent: string, nodes: ReadonlyArray<{ name: string; type: "file" | "directory" }>) {
+  const prefix = parent.replace(/^\/+|\/+$/g, "")
+  return nodes.map((node) => {
+    const path = prefix ? `${prefix}/${node.name}` : node.name
+    return node.type === "directory" ? path + "/" : path
+  })
+}
+
+export function pickerTreeEntries(
+  parent: string,
+  nodes: ReadonlyArray<{ name: string; type: "file" | "directory" }>,
+  mode: "directory" | "file",
+) {
+  return treeEntries(parent, mode === "directory" ? nodes.filter((node) => node.type === "directory") : nodes)
+}
+
+export function pickerSearchEntries<T extends { type: "file" | "directory" }>(
+  nodes: readonly T[],
+  mode: "directory" | "file",
+) {
+  return mode === "directory" ? nodes.filter((node) => node.type === "directory") : [...nodes]
+}
+
+export function pickerMode(mode: "directory" | "file", base?: string) {
+  if (mode === "file") {
+    return {
+      includeFiles: true,
+      action: "file" as const,
+      entries(parent: string, nodes: ReadonlyArray<{ name: string; type: "file" | "directory" }>) {
+        return treeEntries(parent, nodes)
+      },
+      navigation(path: string) {
+        return treePathWithin(base, path) ? path : undefined
+      },
+      result(root: string, selected: string) {
+        return selected || undefined
+      },
+      selection(root: string, path: string) {
+        if (!treePathWithin(base, root)) return
+        return selectedTreePath(root, path, "file", base)
+      },
+    }
+  }
+  return {
+    includeFiles: false,
+    action: "directory" as const,
+    entries(parent: string, nodes: ReadonlyArray<{ name: string; type: "file" | "directory" }>) {
+      return treeEntries(
+        parent,
+        nodes.filter((node) => node.type === "directory"),
+      )
+    },
+    navigation(path: string) {
+      return path
+    },
+    result(root: string, selected: string, valid = true) {
+      if (!valid) return
+      return selected || (root ? nativePickerPath(root) : undefined)
+    },
+    selection(root: string, path: string) {
+      return selectedTreePath(root, path, "directory")
+    },
+  }
+}
+
+export function pickerFileSearchQuery(root: string, input: string, home: string) {
+  const value = input
+    .replace(/\\/g, "/")
+    .replace(/^~(?=\/|$)/, home)
+    .replace(/\/+$/, "")
+  const base = root.replace(/\\/g, "/").replace(/\/+$/, "")
+  if (value === base) return ""
+  if (value.startsWith(base + "/")) return value.slice(base.length + 1)
+  return value
+}
+
+export function pickerAbsoluteInput(input: string, home: string, current: string) {
+  const value = normalizePickerDrive(input).replace(/^~(?=\/|$)/, normalizePickerDrive(home))
+  const absolute = pickerRoot(value) ? value : joinPickerPath(current, value)
+  return canonicalPickerPath(absolute)
+}
+
+export function treePathWithin(base: string | undefined, path: string) {
+  return pickerRelativePath(base, path) !== undefined
+}
+
+export function canonicalPickerPath(path: string) {
+  const value = normalizePickerDrive(path)
+  const root = pickerRoot(value)
+  const parts = value.slice(root.length).split("/")
+  const resolved = parts.reduce<string[]>((output, part) => {
+    if (!part || part === ".") return output
+    if (part === "..") {
+      output.pop()
+      return output
+    }
+    output.push(part)
+    return output
+  }, [])
+  return joinPickerPath(root, resolved.join("/"))
+}
+
+export function pickerRelativePath(base: string | undefined, path: string) {
+  if (!base) return
+  const rootPath = canonicalPickerPath(base)
+  const targetPath = canonicalPickerPath(path)
+  const insensitive = /^[A-Za-z]:\//.test(rootPath) || rootPath.startsWith("//")
+  const root = insensitive ? rootPath.toLowerCase() : rootPath
+  const target = insensitive ? targetPath.toLowerCase() : targetPath
+  if (target === root) return ""
+  const prefix = root.endsWith("/") ? root : root + "/"
+  if (!target.startsWith(prefix)) return
+  return targetPath.slice(prefix.length)
+}
+
+export function currentPickerSuggestions<T>(result: { query: string; items: readonly T[] } | undefined, query: string) {
+  if (result?.query !== query) return []
+  return result.items
+}
+
+export function preloadTreeDirectories(
+  parent: string,
+  nodes: ReadonlyArray<{ name: string; type: "file" | "directory" }>,
+) {
+  return treeEntries(
+    parent,
+    nodes.filter((node) => node.type === "directory"),
+  )
+}
+
+export function advanceTreePreload(advanced: Set<string>, path: string) {
+  if (advanced.has(path)) return false
+  advanced.add(path)
+  return true
+}
+
+export function activeTreeNavigation(request: number, current: number) {
+  return request === current
+}
+
+export function nextTreeScrollTop(current: number, delta: number, scrollHeight: number, clientHeight: number) {
+  return Math.min(Math.max(0, scrollHeight - clientHeight), Math.max(0, current + delta))
+}
+
+export function nextSuggestionIndex(current: number, delta: -1 | 1, count: number) {
+  if (count === 0) return -1
+  return (current + delta + count) % count
+}
+
+export function absoluteTreePath(root: string, path: string) {
+  const base = trimPickerPath(root)
+  const relative = path.replace(/\\/g, "/").replace(/^\/+|\/+$/g, "")
+  if (!relative) return base || "/"
+  if (!base || base === "/") return "/" + relative
+  if (base.endsWith("/")) return base + relative
+  return `${base}/${relative}`
+}
+
+export function selectedTreePath(root: string, path: string, mode: "directory" | "file", base?: string) {
+  const directory = path.endsWith("/")
+  if (mode === "file") {
+    if (directory) return
+    if (!base) return path
+    const absolute = absoluteTreePath(root, path)
+    return pickerRelativePath(base, absolute)
+  }
+  return directory ? nativePickerPath(absoluteTreePath(root, path)) : undefined
+}
+
+export function nativePickerPath(path: string) {
+  const value = trimPickerPath(path)
+  if (/^[A-Za-z]:\//.test(value) || value.startsWith("//")) return value.replaceAll("/", "\\")
+  return value
+}
+import { getFilename } from "@opencode-ai/core/util/path"
+import fuzzysort from "fuzzysort"
+import { ServerSDK } from "@/context/server-sdk"
+
+export function cleanPickerInput(value: string) {
+  const first = (value ?? "").split(/\r?\n/)[0] ?? ""
+  return first.replace(/[\u0000-\u001F\u007F]/g, "").trim()
+}
+
+export function normalizePickerPath(input: string) {
+  const value = input.replaceAll("\\", "/")
+  if (value.startsWith("//") && !value.startsWith("///")) return "//" + value.slice(2).replace(/\/+/g, "/")
+  return value.replace(/\/+/g, "/")
+}
+
+export function normalizePickerDrive(input: string) {
+  const value = normalizePickerPath(input)
+  if (/^[A-Za-z]:$/.test(value)) return value + "/"
+  return value
+}
+
+export function trimPickerPath(input: string) {
+  const value = normalizePickerDrive(input)
+  if (value === "/" || value === "//" || /^[A-Za-z]:\/$/.test(value)) return value
+  return value.replace(/\/+$/, "")
+}
+
+export function joinPickerPath(base: string | undefined, relative: string) {
+  const root = trimPickerPath(base ?? "")
+  const path = trimPickerPath(relative).replace(/^\/+/, "")
+  if (!root) return path
+  if (!path) return root
+  if (root.endsWith("/")) return root + path
+  return root + "/" + path
+}
+
+export function pickerRoot(input: string) {
+  const value = normalizePickerDrive(input)
+  if (value.startsWith("//")) {
+    const [server, share] = value.slice(2).split("/")
+    if (server && share) return `//${server}/${share}`
+    return "//"
+  }
+  if (value.startsWith("/")) return "/"
+  if (/^[A-Za-z]:\//.test(value)) return value.slice(0, 3)
+  return ""
+}
+
+export function pickerParent(input: string) {
+  const value = trimPickerPath(input)
+  const root = pickerRoot(value)
+  if (value === root) return value
+  if (value === "/" || value === "//" || /^[A-Za-z]:\/$/.test(value)) return value
+  const index = value.lastIndexOf("/")
+  if (index < root.length) return root
+  if (index <= 0) return "/"
+  if (index === 2 && /^[A-Za-z]:/.test(value)) return value.slice(0, 3)
+  return value.slice(0, index)
+}
+
+function pickerTilde(absolute: string, home: string) {
+  const path = trimPickerPath(absolute)
+  if (!home) return ""
+  const root = trimPickerPath(home)
+  if (/^[A-Za-z]:\//.test(root)) return ""
+  if (path === root) return "~"
+  if (path.startsWith(root + "/")) return "~" + path.slice(root.length)
+  return ""
+}
+
+export function displayPickerPath(path: string, input: string, home: string) {
+  const value = trimPickerPath(path)
+  if (/^[A-Za-z]:\//.test(trimPickerPath(home)) || /^[A-Za-z]:\//.test(value)) return value.replaceAll("/", "\\")
+  return pickerTilde(value, home) || value
+}
+
+export function createDirectorySearch(args: { sdk: ServerSDK; base: () => string | undefined; home: () => string }) {
+  const cache = new Map<string, Promise<Array<{ name: string; absolute: string }>>>()
+  let current = 0
+
+  const scoped = (value: string) => {
+    const base = args.base()
+    if (!base) return
+    const raw = normalizePickerDrive(value)
+    if (!raw) return { directory: trimPickerPath(base), path: "" }
+    const home = args.home()
+    if (raw === "~") return { directory: trimPickerPath(home || base), path: "" }
+    if (raw.startsWith("~/")) return { directory: trimPickerPath(home || base), path: raw.slice(2) }
+    const root = pickerRoot(raw)
+    if (root) return { directory: trimPickerPath(root), path: raw.slice(root.length) }
+    return { directory: trimPickerPath(base), path: raw }
+  }
+
+  const directories = async (directory: string) => {
+    const key = trimPickerPath(directory)
+    const existing = cache.get(key)
+    if (existing) return existing
+    const request = args.sdk.client.file
+      .list({ directory: key, path: "" })
+      .then((result) => result.data ?? [])
+      .catch(() => [])
+      .then((nodes) =>
+        nodes
+          .filter((node) => node.type === "directory")
+          .map((node) => ({ name: node.name, absolute: trimPickerPath(normalizePickerDrive(node.absolute)) })),
+      )
+    cache.set(key, request)
+    return request
+  }
+
+  const match = async (directory: string, query: string, limit: number) => {
+    const items = await directories(directory)
+    if (!query) return items.slice(0, limit).map((item) => item.absolute)
+    return fuzzysort.go(query, items, { key: "name", limit }).map((item) => item.obj.absolute)
+  }
+
+  return async (filter: string) => {
+    const token = ++current
+    const active = () => token === current
+    const value = cleanPickerInput(filter)
+    const input = scoped(value)
+    if (!input) return [] as string[]
+    const raw = normalizePickerDrive(value)
+    const pathInput = raw.startsWith("~") || !!pickerRoot(raw) || raw.includes("/")
+    const query = normalizePickerDrive(input.path)
+    if (!pathInput) {
+      const results = await args.sdk.client.find
+        .files({ directory: input.directory, query, type: "directory", limit: 50 })
+        .then((result) => result.data ?? [])
+        .catch(() => [])
+      if (!active()) return []
+      return results.map((path) => joinPickerPath(input.directory, path)).slice(0, 50)
+    }
+    const segments = query.replace(/^\/+/, "").split("/")
+    const head = segments.slice(0, -1).filter((part) => part && part !== ".")
+    const tail = segments.at(-1) ?? ""
+    let paths = [input.directory]
+    for (const part of head) {
+      if (!active()) return []
+      if (part === "..") {
+        paths = paths.map(pickerParent)
+        continue
+      }
+      paths = Array.from(new Set((await Promise.all(paths.map((path) => match(path, part, 4)))).flat())).slice(0, 12)
+      if (!active() || paths.length === 0) return []
+    }
+    const matches = Array.from(new Set((await Promise.all(paths.map((path) => match(path, tail, 50)))).flat()))
+    if (!active()) return []
+    const base = raw.startsWith("~") ? trimPickerPath(input.directory) : ""
+    if (raw.endsWith("/") || !tail) return Array.from(new Set([base, ...matches].filter(Boolean))).slice(0, 50)
+    const target = matches.find((path) => getFilename(path).toLowerCase() === tail.toLowerCase())
+    if (!target) return matches.slice(0, 50)
+    const children = await match(target, "", 30)
+    if (!active()) return []
+    return Array.from(new Set([base, ...matches, ...children].filter(Boolean))).slice(0, 50)
+  }
+}

packages/app/src/components/directory-picker-policy.ts

@@ -0,0 +1,7 @@
+import { ServerConnection } from "@/context/server"
+import type { Platform } from "@/context/platform"
+
+export function directoryPickerKind(platform: Platform["platform"], server: ServerConnection.Any) {
+  if (platform === "desktop" && ServerConnection.local(server)) return "native" as const
+  return "server" as const
+}

packages/app/src/components/directory-picker.test.ts

@@ -0,0 +1,21 @@
+import { describe, expect, test } from "bun:test"
+import { directoryPickerKind } from "./directory-picker-policy"
+
+const local = {
+  type: "sidecar",
+  variant: "base",
+  http: { url: "http://localhost:4096" },
+} as const
+const remote = {
+  type: "ssh",
+  host: "example.test",
+  http: { url: "http://localhost:4096" },
+} as const
+
+describe("directoryPickerKind", () => {
+  test("uses the native picker only for local desktop projects", () => {
+    expect(directoryPickerKind("desktop", local)).toBe("native")
+    expect(directoryPickerKind("desktop", remote)).toBe("server")
+    expect(directoryPickerKind("web", local)).toBe("server")
+  })
+})

packages/app/src/components/directory-picker.tsx

@@ -0,0 +1,45 @@
+import { useDialog } from "@opencode-ai/ui/context/dialog"
+import { ServerConnection } from "@/context/server"
+import { usePlatform } from "@/context/platform"
+import { useSettings } from "@/context/settings"
+import { lazy } from "solid-js"
+import { DialogSelectDirectory } from "./dialog-select-directory"
+import { directoryPickerKind } from "./directory-picker-policy"
+
+const DialogSelectDirectoryV2 = lazy(() =>
+  import("./dialog-select-directory-v2").then((module) => ({ default: module.DialogSelectDirectoryV2 })),
+)
+
+type DirectoryPickerInput = {
+  server: ServerConnection.Any
+  title?: string
+  multiple?: boolean
+  onSelect: (result: string | string[] | null) => void
+}
+
+export function useDirectoryPicker() {
+  const platform = usePlatform()
+  const settings = useSettings()
+  const dialog = useDialog()
+
+  return (input: DirectoryPickerInput) => {
+    if (directoryPickerKind(platform.platform, input.server) === "native" && platform.platform === "desktop") {
+      void platform.openDirectoryPickerDialog({ title: input.title, multiple: input.multiple }).then(input.onSelect)
+      return
+    }
+
+    let selected = false
+    const onSelect = (result: string | string[] | null) => {
+      selected = result !== null
+      input.onSelect(result)
+    }
+    const cancel = () => {
+      if (!selected) input.onSelect(null)
+    }
+    if (platform.platform === "desktop" && settings.general.newLayoutDesigns()) {
+      dialog.show(() => <DialogSelectDirectoryV2 {...input} onSelect={onSelect} />, cancel)
+      return
+    }
+    dialog.show(() => <DialogSelectDirectory {...input} onSelect={onSelect} />, cancel)
+  }
+}

packages/app/src/components/file-tree.test.ts

@@ -8,6 +8,8 @@ beforeAll(async () => {
   mock.module("@solidjs/router", () => ({
     useNavigate: () => () => undefined,
     useParams: () => ({}),
+    useLocation: () => ({}),
+    useSearchParams: () => [{}, () => undefined],
   }))
   mock.module("@/context/file", () => ({
     useFile: () => ({

packages/app/src/components/help-button.tsx

@@ -0,0 +1,54 @@
+import { Icon } from "@opencode-ai/ui/v2/icon"
+import { Popover } from "@opencode-ai/ui/popover"
+import { createSignal, Show } from "solid-js"
+import { createStore } from "solid-js/store"
+
+export function HelpButton() {
+  if (import.meta.env.VITE_OPENCODE_CHANNEL !== "dev") return null
+
+  const [state, setState] = /* persisted(Persist.global("help-button"), */ createStore({ dismissed: false }) /* ) */
+  const [shown, setShown] = createSignal(false)
+
+  return (
+    <Show when={!state.dismissed}>
+      <div class="fixed bottom-4 right-4 z-50">
+        <Popover
+          open={shown()}
+          onOpenChange={setShown}
+          triggerAs="button"
+          triggerProps={{
+            type: "button",
+            "aria-label": "Help",
+            class:
+              "size-7 rounded-full bg-background-base shadow-[var(--shadow-lg-border-base)] flex items-center justify-center text-text-base hover:text-text-strong transition-colors",
+          }}
+          trigger={<span aria-hidden="true">?</span>}
+          class="[&_[data-slot=popover-body]]:p-0 w-[320px] max-w-[calc(100vw-40px)] bg-transparent border-0 shadow-none rounded-xl"
+          gutter={8}
+          placement="top-end"
+        >
+          <Show when={shown()}>
+            <div class="relative flex flex-col gap-1 w-[320px] p-4 rounded-xl bg-background-strong shadow-[var(--shadow-lg-border-base)]">
+              <button
+                type="button"
+                aria-label="Close"
+                class="absolute top-3.5 right-3.5 size-6 rounded-md flex items-center justify-center text-text-base hover:text-text-strong hover:bg-surface-raised-base-hover transition-colors"
+                onClick={() => {
+                  setShown(false)
+                  setState("dismissed", true)
+                }}
+              >
+                <Icon name="xmark-small" />
+              </button>
+              <span class="text-14-regular text-text-strong">Lorem ipsum dolor sit amet</span>
+              <p class="text-12-regular text-text-weak">
+                Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et
+                dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation.
+              </p>
+            </div>
+          </Show>
+        </Popover>
+      </div>
+    </Show>
+  )
+}

packages/app/src/components/pierre-tree.test.ts

@@ -0,0 +1,23 @@
+import { expect, test } from "bun:test"
+import { FileTree, type FileTreeDirectoryHandle } from "@pierre/trees"
+
+test("reports directory expansion changes", () => {
+  const changes: Array<{ path: string; expanded: boolean }> = []
+  const tree = new FileTree({
+    paths: ["src/"],
+    onExpansionChange: (change) => changes.push(change),
+  })
+
+  const src = tree.getItem("src/")
+  if (!src || !src.isDirectory()) throw new Error("Expected src to be a directory")
+  const directory = src as FileTreeDirectoryHandle
+
+  directory.expand()
+  directory.collapse()
+
+  expect(changes).toEqual([
+    { path: "src/", expanded: true },
+    { path: "src/", expanded: false },
+  ])
+  tree.cleanUp()
+})

packages/app/src/components/prompt-input.stories.tsx

@@ -0,0 +1,117 @@
+// @ts-nocheck
+import { createStore } from "solid-js/store"
+import { createPromptState } from "@/context/prompt"
+import { createPromptInputHistory, PromptInput } from "./prompt-input"
+
+function PromptInputExample() {
+  const state = createPromptState()
+  const history = createPromptInputHistory()
+  const [controls, setControls] = createStore({
+    agent: "build",
+    variant: undefined as string | undefined,
+    comments: 0,
+    tabs: [] as string[],
+    activeTab: undefined as string | undefined,
+    reviewOpen: false,
+  })
+  const model = {
+    current: () => ({ id: "claude-3-7-sonnet", name: "Claude 3.7 Sonnet", provider: { id: "anthropic" } }),
+    variant: {
+      list: () => ["fast", "thinking"],
+      current: () => controls.variant,
+      set: (variant?: string) => setControls("variant", variant),
+    },
+  }
+  const submission = {
+    abort() {},
+    handleSubmit(event: Event) {
+      event.preventDefault()
+      state.reset()
+    },
+  }
+  const inputControls = {
+    agents: {
+      available: [{ name: "review", hidden: false, mode: "subagent" }],
+      options: ["build", "review", "plan"],
+      get current() {
+        return controls.agent
+      },
+      loading: false,
+      visible: true,
+      select: (agent?: string) => setControls("agent", agent ?? "build"),
+    },
+    model: {
+      selection: model,
+      paid: true,
+      loading: false,
+    },
+    projects: {
+      available: [{ name: "Story project", worktree: "/tmp/story", sandboxes: [] }],
+      directory: "/tmp/story",
+      select() {},
+      add() {},
+    },
+    session: {
+      id: "story-session",
+      tabs: {
+        active: () => controls.activeTab,
+        all: () => controls.tabs,
+        open: (tab: string) => setControls("tabs", (tabs) => (tabs.includes(tab) ? tabs : [...tabs, tab])),
+        setActive: (tab: string) => setControls("activeTab", tab),
+      },
+      reviewPanel: {
+        opened: () => controls.reviewOpen,
+        open: () => setControls("reviewOpen", true),
+      },
+    },
+    newLayoutDesigns: true,
+  }
+  const addReviewComment = () => {
+    const comment = controls.comments + 1
+    setControls("comments", comment)
+    state.context.add({
+      type: "file",
+      path: "src/components/prompt-input.tsx",
+      selection: {
+        startLine: 84 + comment,
+        startChar: 0,
+        endLine: 84 + comment,
+        endChar: 0,
+      },
+      comment: `Review comment ${comment}`,
+      commentID: `review-comment-${comment}`,
+      commentOrigin: "review",
+      preview: "export const PromptInput = ...",
+    })
+  }
+
+  return (
+    <div class="flex flex-col gap-3">
+      <PromptInput controls={inputControls} state={state} history={history} submission={submission} />
+      <div>
+        <button
+          type="button"
+          class="rounded-md border border-border-weak-base bg-background-base px-2.5 py-1.5 text-12-medium text-text-base hover:bg-background-stronger"
+          onClick={addReviewComment}
+        >
+          Add review comment
+        </button>
+      </div>
+    </div>
+  )
+}
+
+export default {
+  title: "App/PromptInput",
+  id: "app-prompt-input",
+  component: PromptInput,
+}
+
+export const Basic = {
+  render: () => (
+    <div class="pt-10">
+      <h1 class="mb-4">Prompt Input</h1>
+      <PromptInputExample />
+    </div>
+  ),
+}

packages/app/src/components/prompt-input.tsx

@@ -17,8 +17,8 @@ import {
   type JSX,
 } from "solid-js"
 import { Popover as KobaltePopover } from "@kobalte/core/popover"
-import { createStore } from "solid-js/store"
-import { useLocal } from "@/context/local"
+import { createStore, type SetStoreFunction, type Store } from "solid-js/store"
+import type { useLocal } from "@/context/local"
 import { selectionFromLines, type SelectedLineRange, useFile } from "@/context/file"
 import {
   ContentPart,
@@ -31,9 +31,7 @@ import {
   FileAttachmentPart,
 } from "@/context/prompt"
 import { useLayout } from "@/context/layout"
-import { useNavigate } from "@solidjs/router"
 import { useSDK } from "@/context/sdk"
-import { useServer } from "@/context/server"
 import { useSync } from "@/context/sync"
 import { useComments } from "@/context/comments"
 import { Button } from "@opencode-ai/ui/button"
@@ -45,18 +43,15 @@ import { IconButton } from "@opencode-ai/ui/icon-button"
 import { Select } from "@opencode-ai/ui/select"
 import { useDialog } from "@opencode-ai/ui/context/dialog"
 import { ModelSelectorPopover } from "@/components/dialog-select-model"
-import { useProviders } from "@/hooks/use-providers"
 import { useCommand } from "@/context/command"
 import { Persist, persisted } from "@/utils/persist"
 import { usePermission } from "@/context/permission"
 import { useLanguage } from "@/context/language"
 import { usePlatform } from "@/context/platform"
-import { useSettings } from "@/context/settings"
-import { useSessionLayout } from "@/pages/session/session-layout"
 import { createSessionTabs } from "@/pages/session/helpers"
 import { createTextFragment, getCursorPosition, setCursorPosition, setRangeEdge } from "./prompt-input/editor-dom"
 import { createPromptAttachments } from "./prompt-input/attachments"
-import { ACCEPTED_FILE_TYPES } from "./prompt-input/files"
+import { ACCEPTED_FILE_TYPES, pickAttachmentFiles } from "./prompt-input/files"
 import {
   canNavigateHistoryAtCursor,
   navigatePromptHistory,
@@ -72,16 +67,104 @@ import { PromptContextItems } from "./prompt-input/context-items"
 import { PromptImageAttachments } from "./prompt-input/image-attachments"
 import { PromptDragOverlay } from "./prompt-input/drag-overlay"
 import { promptPlaceholder } from "./prompt-input/placeholder"
+import { showToast } from "@/utils/toast"
 import { ImagePreview } from "@opencode-ai/ui/image-preview"
-import { useQueries } from "@tanstack/solid-query"
-import { useQueryOptions } from "@/context/server-sync"
 import { pathKey } from "@/utils/path-key"
-import { base64Encode } from "@opencode-ai/core/util/encode"
 import { displayName } from "@/pages/layout/helpers"
 
-interface PromptInputProps {
+export type PromptInputState = ReturnType<typeof usePrompt>
+
+export type PromptInputHistory = {
+  entries: (mode: "normal" | "shell") => PromptHistoryStoredEntry[]
+  add: (prompt: Prompt, mode: "normal" | "shell", comments: PromptHistoryComment[]) => void
+}
+
+export type PromptInputSubmission = {
+  abort: () => Promise<void> | void
+  handleSubmit: (event: Event) => Promise<void> | void
+}
+
+export type PromptInputControls = {
+  agents: {
+    available: { name: string; hidden?: boolean; mode: string }[]
+    options: string[]
+    current: string
+    loading: boolean
+    visible: boolean
+    select: (name: string | undefined) => void
+  }
+  model: {
+    selection: ReturnType<typeof useLocal>["model"]
+    paid: boolean
+    loading: boolean
+  }
+  projects: {
+    available: { name?: string; worktree: string; sandboxes?: string[] }[]
+    directory: string
+    select: (worktree: string) => void
+    add: (title: string) => void
+  }
+  session: {
+    id?: string
+    tabs: {
+      active: () => string | undefined
+      all: () => string[]
+      open: (tab: string) => void | Promise<void>
+      setActive: (tab: string) => void
+    }
+    reviewPanel: {
+      opened: () => boolean
+      open: () => void
+    }
+  }
+  newLayoutDesigns: boolean
+}
+
+export function createPromptInputHistory(): PromptInputHistory {
+  const [normal, setNormal] = createStore<PromptHistoryState>({ entries: [] })
+  const [shell, setShell] = createStore<PromptHistoryState>({ entries: [] })
+  return createPromptInputHistoryStore(normal, setNormal, shell, setShell)
+}
+
+type PromptHistoryState = { entries: PromptHistoryStoredEntry[] }
+
+function createPromptInputHistoryStore(
+  normal: Store<PromptHistoryState>,
+  setNormal: SetStoreFunction<PromptHistoryState>,
+  shell: Store<PromptHistoryState>,
+  setShell: SetStoreFunction<PromptHistoryState>,
+): PromptInputHistory {
+  return {
+    entries: (mode) => (mode === "shell" ? shell.entries : normal.entries),
+    add(prompt, mode, comments) {
+      const current = mode === "shell" ? shell : normal
+      const setCurrent = mode === "shell" ? setShell : setNormal
+      const next = prependHistoryEntry(current.entries, prompt, comments)
+      if (next === current.entries) return
+      setCurrent("entries", next)
+    },
+  }
+}
+
+function createPersistedPromptInputHistory() {
+  const [normal, setNormal] = persisted(
+    Persist.global("prompt-history", ["prompt-history.v1"]),
+    createStore<PromptHistoryState>({ entries: [] }),
+  )
+  const [shell, setShell] = persisted(
+    Persist.global("prompt-history-shell", ["prompt-history-shell.v1"]),
+    createStore<PromptHistoryState>({ entries: [] }),
+  )
+  return createPromptInputHistoryStore(normal, setNormal, shell, setShell)
+}
+
+export interface PromptInputProps {
   class?: string
   variant?: "dock" | "new-session"
+  state?: PromptInputState
+  history?: PromptInputHistory
+  submission?: PromptInputSubmission
+  controls: PromptInputControls
   ref?: (el: HTMLDivElement) => void
   newSessionWorktree?: string
   onNewSessionWorktreeReset?: () => void
@@ -123,24 +206,18 @@ const EXAMPLES = [
 
 export const PromptInput: Component<PromptInputProps> = (props) => {
   const sdk = useSDK()
-  const navigate = useNavigate()
-  const queryOptions = useQueryOptions()
 
   const sync = useSync()
-  const local = useLocal()
   const files = useFile()
-  const prompt = usePrompt()
+  const prompt = props.state ?? usePrompt()
   const layout = useLayout()
-  const server = useServer()
   const comments = useComments()
   const dialog = useDialog()
-  const providers = useProviders()
   const command = useCommand()
   const permission = usePermission()
   const language = useLanguage()
   const platform = usePlatform()
-  const settings = useSettings()
-  const { params, tabs, view } = useSessionLayout()
+  const tabs = () => props.controls.session.tabs
   let editorRef!: HTMLDivElement
   let fileInputRef: HTMLInputElement | undefined
   let scrollRef!: HTMLDivElement
@@ -198,10 +275,10 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
   }).activeFileTab
 
   const commentInReview = (path: string) => {
-    const sessionID = params.id
+    const sessionID = props.controls.session.id
     if (!sessionID) return false
 
-    const diffs = sync.data.session_diff[sessionID]
+    const diffs = sync().data.session_diff[sessionID]
     if (!diffs) return false
     return diffs.some((diff) => diff.file === path)
   }
@@ -231,14 +308,14 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
 
     const wantsReview = item.commentOrigin === "review" || (item.commentOrigin !== "file" && commentInReview(item.path))
     if (wantsReview) {
-      if (!view().reviewPanel.opened()) view().reviewPanel.open()
+      if (!props.controls.session.reviewPanel.opened()) props.controls.session.reviewPanel.open()
       layout.fileTree.setTab("changes")
       tabs().setActive("review")
       queueCommentFocus()
       return
     }
 
-    if (!view().reviewPanel.opened()) view().reviewPanel.open()
+    if (!props.controls.session.reviewPanel.opened()) props.controls.session.reviewPanel.open()
     layout.fileTree.setTab("all")
     const tab = files.tab(item.path)
     void tabs().open(tab)
@@ -263,8 +340,8 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
 
     return paths
   })
-  const info = createMemo(() => (params.id ? sync.session.get(params.id) : undefined))
-  const working = createMemo(() => sync.data.session_working(params.id ?? ""))
+  const info = createMemo(() => (props.controls.session.id ? sync().session.get(props.controls.session.id) : undefined))
+  const working = createMemo(() => sync().data.session_working(props.controls.session.id ?? ""))
   const imageAttachments = createMemo(() =>
     prompt.current().filter((part): part is ImageAttachmentPart => part.type === "image"),
   )
@@ -277,6 +354,7 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
     draggingType: "image" | "@mention" | null
     mode: "normal" | "shell"
     applyingHistory: boolean
+    variantOpen: boolean
   }>({
     popover: null,
     historyIndex: -1,
@@ -285,6 +363,7 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
     draggingType: null,
     mode: "normal",
     applyingHistory: false,
+    variantOpen: false,
   })
   const [picker, setPicker] = createStore({
     projectOpen: false,
@@ -339,29 +418,14 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
   })
 
   const hasUserPrompt = createMemo(() => {
-    const sessionID = params.id
+    const sessionID = props.controls.session.id
     if (!sessionID) return false
-    const messages = sync.data.message[sessionID]
+    const messages = sync().data.message[sessionID]
     if (!messages) return false
     return messages.some((m) => m.role === "user")
   })
 
-  const [history, setHistory] = persisted(
-    Persist.global("prompt-history", ["prompt-history.v1"]),
-    createStore<{
-      entries: PromptHistoryStoredEntry[]
-    }>({
-      entries: [],
-    }),
-  )
-  const [shellHistory, setShellHistory] = persisted(
-    Persist.global("prompt-history-shell", ["prompt-history-shell.v1"]),
-    createStore<{
-      entries: PromptHistoryStoredEntry[]
-    }>({
-      entries: [],
-    }),
-  )
+  const history = props.history ?? createPersistedPromptInputHistory()
 
   const suggest = createMemo(() => !hasUserPrompt())
 
@@ -463,7 +527,20 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
 
   const escBlur = () => platform.platform === "desktop" && platform.os === "macos"
 
-  const pick = () => fileInputRef?.click()
+  const pick = () => {
+    pickAttachmentFiles({
+      picker: platform.openAttachmentPickerDialog,
+      directory: () => sdk().directory,
+      fallback: () => fileInputRef?.click(),
+      onFile: addAttachment,
+      onError: (error) =>
+        showToast({
+          variant: "error",
+          title: language.t("common.requestFailed"),
+          description: error instanceof Error ? error.message : String(error),
+        }),
+    })
+  }
 
   const setMode = (mode: "normal" | "shell") => {
     setStore("mode", mode)
@@ -552,8 +629,8 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
   }
 
   createEffect(() => {
-    params.id
-    if (params.id) return
+    props.controls.session.id
+    if (props.controls.session.id) return
     if (!suggest()) return
     const interval = setInterval(() => {
       setStore("placeholder", (prev) => (prev + 1) % EXAMPLES.length)
@@ -582,11 +659,10 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
   }
 
   const agentList = createMemo(() =>
-    sync.data.agent
+    props.controls.agents.available
       .filter((agent) => !agent.hidden && agent.mode !== "primary")
       .map((agent): AtOption => ({ type: "agent", name: agent.name, display: agent.name })),
   )
-  const agentNames = createMemo(() => local.agent.list().map((agent) => agent.name))
 
   const handleAtSelect = (option: AtOption | undefined) => {
     if (!option) return
@@ -623,6 +699,7 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
     },
     key: atKey,
     filterKeys: ["display"],
+    skipFilter: (item) => item.type === "file" && !item.recent,
     groupBy: (item) => {
       if (item.type === "agent") return "agent"
       if (item.recent) return "recent"
@@ -651,7 +728,7 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
         type: "builtin" as const,
       }))
 
-    const custom = sync.data.command.map((cmd) => ({
+    const custom = sync().data.command.map((cmd) => ({
       id: `custom.${cmd.name}`,
       trigger: cmd.name,
       title: cmd.name,
@@ -1011,11 +1088,7 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
   }
 
   const addToHistory = (prompt: Prompt, mode: "normal" | "shell") => {
-    const currentHistory = mode === "shell" ? shellHistory : history
-    const setCurrentHistory = mode === "shell" ? setShellHistory : setHistory
-    const next = prependHistoryEntry(currentHistory.entries, prompt, mode === "shell" ? [] : historyComments())
-    if (next === currentHistory.entries) return
-    setCurrentHistory("entries", next)
+    history.add(prompt, mode, mode === "shell" ? [] : historyComments())
   }
 
   createEffect(
@@ -1060,7 +1133,7 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
   const navigateHistory = (direction: "up" | "down") => {
     const result = navigatePromptHistory({
       direction,
-      entries: store.mode === "shell" ? shellHistory.entries : history.entries,
+      entries: history.entries(store.mode),
       historyIndex: store.historyIndex,
       currentPrompt: prompt.current(),
       currentComments: historyComments(),
@@ -1073,7 +1146,8 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
     return true
   }
 
-  const { addAttachments, removeAttachment, handlePaste } = createPromptAttachments({
+  const { addAttachment, addAttachments, removeAttachment, handlePaste } = createPromptAttachments({
+    prompt,
     editor: () => editorRef,
     isDialogActive: () => !!dialog.active,
     setDraggingType: (type) => setStore("draggingType", type),
@@ -1083,6 +1157,7 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
     },
     addPart,
     readClipboardImage: platform.readClipboardImage,
+    getPathForFile: platform.getPathForFile,
   })
 
   const fileAttachmentInput = () => (
@@ -1100,36 +1175,41 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
     />
   )
 
-  const variants = createMemo(() => ["default", ...local.model.variant.list()])
+  const variants = createMemo(() => ["default", ...props.controls.model.selection.variant.list()])
+  // Check provider variants directly: `variants` also includes the UI-only default option.
+  const showVariantControl = createMemo(() => props.controls.model.selection.variant.list().length > 0)
   const accepting = createMemo(() => {
-    const id = params.id
-    if (!id) return permission.isAutoAcceptingDirectory(sdk.directory)
-    return permission.isAutoAccepting(id, sdk.directory)
+    const id = props.controls.session.id
+    if (!id) return permission.isAutoAcceptingDirectory(sdk().directory)
+    return permission.isAutoAccepting(id, sdk().directory)
   })
 
-  const { abort, handleSubmit } = createPromptSubmit({
-    info,
-    imageAttachments,
-    commentCount,
-    autoAccept: () => accepting(),
-    mode: () => store.mode,
-    working,
-    editor: () => editorRef,
-    queueScroll,
-    promptLength,
-    addToHistory,
-    resetHistoryNavigation: () => {
-      resetHistoryNavigation(true)
-    },
-    setMode: (mode) => setStore("mode", mode),
-    setPopover: (popover) => setStore("popover", popover),
-    newSessionWorktree: () => props.newSessionWorktree,
-    onNewSessionWorktreeReset: props.onNewSessionWorktreeReset,
-    shouldQueue: props.shouldQueue,
-    onQueue: props.onQueue,
-    onAbort: props.onAbort,
-    onSubmit: props.onSubmit,
-  })
+  const { abort, handleSubmit } =
+    props.submission ??
+    createPromptSubmit({
+      prompt,
+      info,
+      imageAttachments,
+      commentCount,
+      autoAccept: () => accepting(),
+      mode: () => store.mode,
+      working,
+      editor: () => editorRef,
+      queueScroll,
+      promptLength,
+      addToHistory,
+      resetHistoryNavigation: () => {
+        resetHistoryNavigation(true)
+      },
+      setMode: (mode) => setStore("mode", mode),
+      setPopover: (popover) => setStore("popover", popover),
+      newSessionWorktree: () => props.newSessionWorktree,
+      onNewSessionWorktreeReset: props.onNewSessionWorktreeReset,
+      shouldQueue: props.shouldQueue,
+      onQueue: props.onQueue,
+      onAbort: props.onAbort,
+      onSubmit: props.onSubmit,
+    })
 
   const handleKeyDown = (event: KeyboardEvent) => {
     if ((event.metaKey || event.ctrlKey) && !event.altKey && !event.shiftKey && event.key.toLowerCase() === "u") {
@@ -1293,17 +1373,9 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
     }
   }
 
-  const [agentsQuery, globalProvidersQuery, providersQuery] = useQueries(() => ({
-    queries: [
-      queryOptions.agents(pathKey(sdk.directory)),
-      queryOptions.providers(null),
-      queryOptions.providers(pathKey(sdk.directory)),
-    ],
-  }))
-
-  const agentsLoading = () => agentsQuery.isLoading
+  const agentsLoading = () => props.controls.agents.loading
   const agentsShouldFadeIn = createMemo((prev) => prev ?? agentsLoading())
-  const providersLoading = () => agentsLoading() || providersQuery.isLoading || globalProvidersQuery.isLoading
+  const providersLoading = () => props.controls.model.loading
   const providersShouldFadeIn = createMemo((prev) => prev ?? providersLoading())
 
   const [promptReady] = createResource(
@@ -1318,23 +1390,23 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
 
   const modelControlState = createMemo<ComposerModelControlState>(() => ({
     loading: providersLoading(),
-    paid: providers.paid().length > 0,
+    paid: props.controls.model.paid,
     title: language.t("command.model.choose"),
     keybind: command.keybind("model.choose"),
-    model: local.model,
-    providerID: local.model.current()?.provider?.id,
-    modelName: local.model.current()?.name ?? language.t("dialog.model.select.title"),
+    model: props.controls.model.selection,
+    providerID: props.controls.model.selection.current()?.provider?.id,
+    modelName: props.controls.model.selection.current()?.name ?? language.t("dialog.model.select.title"),
     style: control(),
     onClose: restoreFocus,
     onUnpaidClick: () => {
       void import("@/components/dialog-select-model-unpaid").then((x) => {
-        dialog.show(() => <x.DialogSelectModelUnpaid model={local.model} />)
+        dialog.show(() => <x.DialogSelectModelUnpaid model={props.controls.model.selection} />)
       })
     },
   }))
 
   const newSession = () => props.variant === "new-session"
-  const projects = createMemo(() => layout.projects.list())
+  const projects = createMemo(() => props.controls.projects.available)
   const projectForDirectory = (directory: string | undefined) => {
     if (!directory) return
     const key = pathKey(directory)
@@ -1342,13 +1414,13 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
       (project) => pathKey(project.worktree) === key || project.sandboxes?.some((sandbox) => pathKey(sandbox) === key),
     )
   }
-  const selectedProject = createMemo(() => projectForDirectory(sdk.directory))
+  const selectedProject = createMemo(() => projectForDirectory(props.controls.projects.directory))
   const projectResults = createMemo(() => {
     const search = picker.projectSearch.trim().toLowerCase()
     if (!search) return projects()
     return projects().filter((project) => displayName(project).toLowerCase().includes(search))
   })
-  const showAgentControl = createMemo(() => settings.general.showCustomAgents() && agentNames().length > 0)
+  const showAgentControl = createMemo(() => props.controls.agents.visible && props.controls.agents.options.length > 0)
   const selectProject = (worktree: string) => {
     setPicker({
       projectOpen: false,
@@ -1358,26 +1430,11 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
       restoreFocus()
       return
     }
-    layout.projects.open(worktree)
-    server.projects.touch(worktree)
-    navigate(`/${base64Encode(worktree)}/session`)
+    props.controls.projects.select(worktree)
+    restoreFocus()
   }
-  const addProject = async () => {
-    const select = (result: string | string[] | null) => {
-      const directory = Array.isArray(result) ? result[0] : result
-      if (!directory) return
-      selectProject(directory)
-    }
-    if (platform.openDirectoryPickerDialog && server.isLocal()) {
-      select(await platform.openDirectoryPickerDialog({ title: language.t("command.project.open") }))
-      return
-    }
-    void import("@/components/dialog-select-directory").then((x) => {
-      dialog.show(
-        () => <x.DialogSelectDirectory onSelect={select} />,
-        () => select(null),
-      )
-    })
+  const addProject = () => {
+    props.controls.projects.add(language.t("command.project.open"))
   }
 
   const projectPickerState = createMemo<ComposerPickerState>(() => ({
@@ -1418,11 +1475,11 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
   const agentControlState = createMemo<ComposerAgentControlState>(() => ({
     title: language.t("command.agent.cycle"),
     keybind: command.keybind("agent.cycle"),
-    options: agentNames(),
-    current: local.agent.current()?.name ?? "",
+    options: props.controls.agents.options,
+    current: props.controls.agents.current,
     style: control(),
     onSelect: (value) => {
-      local.agent.set(value)
+      props.controls.agents.select(value)
       restoreFocus()
     },
   }))
@@ -1454,7 +1511,7 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
         t={(key) => language.t(key as Parameters<typeof language.t>[0])}
       />
       <Switch>
-        <Match when={settings.general.newLayoutDesigns()}>
+        <Match when={props.controls.newLayoutDesigns}>
           <div class="flex flex-col gap-3">
             <DockShellForm
               data-component={newSession() ? "session-new-composer" : "session-composer"}
@@ -1569,6 +1626,39 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
                     <ComposerPickerTrigger state={newProjectTriggerState()} />
                   </Show>
                   <ComposerModelControl state={modelControlState()} />
+                  <Show when={store.mode !== "shell" && showVariantControl()}>
+                    <div
+                      data-component="prompt-variant-control"
+                      classList={{
+                        "hidden group-hover/prompt-input:block group-focus-within/prompt-input:block":
+                          !props.controls.model.selection.variant.current() && !store.variantOpen,
+                      }}
+                    >
+                      <TooltipKeybind
+                        placement="top"
+                        gutter={4}
+                        title={language.t("command.model.variant.cycle")}
+                        keybind={command.keybind("model.variant.cycle")}
+                      >
+                        <Select
+                          size="normal"
+                          options={variants()}
+                          current={props.controls.model.selection.variant.current() ?? "default"}
+                          label={(x) => (x === "default" ? language.t("common.default") : x)}
+                          onOpenChange={(open) => setStore("variantOpen", open)}
+                          onSelect={(value) => {
+                            props.controls.model.selection.variant.set(value === "default" ? undefined : value)
+                            restoreFocus()
+                          }}
+                          class="capitalize max-w-[160px] justify-start text-v2-text-text-faint"
+                          valueClass="truncate text-[13px] font-[440] leading-5 text-v2-text-text-faint"
+                          triggerStyle={control()}
+                          triggerProps={{ "data-action": "prompt-model-variant" }}
+                          variant="ghost"
+                        />
+                      </TooltipKeybind>
+                    </div>
+                  </Show>
                 </div>
                 <Tooltip placement="top" inactive={!working() && blank()} value={tip()}>
                   <IconButton
@@ -1797,10 +1887,10 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
                         >
                           <Select
                             size="normal"
-                            options={agentNames()}
-                            current={local.agent.current()?.name ?? ""}
+                            options={props.controls.agents.options}
+                            current={props.controls.agents.current}
                             onSelect={(value) => {
-                              local.agent.set(value)
+                              props.controls.agents.select(value)
                               restoreFocus()
                             }}
                             class="capitalize max-w-[160px] text-text-base"
@@ -1819,7 +1909,7 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
                           style={providersShouldFadeIn() ? { animation: "fade-in 0.3s" } : undefined}
                         >
                           <Show
-                            when={providers.paid().length > 0}
+                            when={props.controls.model.paid}
                             fallback={
                               <TooltipKeybind
                                 placement="top"
@@ -1836,19 +1926,22 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
                                   style={control()}
                                   onClick={() => {
                                     void import("@/components/dialog-select-model-unpaid").then((x) => {
-                                      dialog.show(() => <x.DialogSelectModelUnpaid model={local.model} />)
+                                      dialog.show(() => (
+                                        <x.DialogSelectModelUnpaid model={props.controls.model.selection} />
+                                      ))
                                     })
                                   }}
                                 >
-                                  <Show when={local.model.current()?.provider?.id}>
+                                  <Show when={props.controls.model.selection.current()?.provider?.id}>
                                     <ProviderIcon
-                                      id={local.model.current()?.provider?.id ?? ""}
+                                      id={props.controls.model.selection.current()?.provider?.id ?? ""}
                                       class="size-4 shrink-0 opacity-40 group-hover:opacity-100 transition-opacity duration-150"
                                       style={{ "will-change": "opacity", transform: "translateZ(0)" }}
                                     />
                                   </Show>
                                   <span class="truncate">
-                                    {local.model.current()?.name ?? language.t("dialog.model.select.title")}
+                                    {props.controls.model.selection.current()?.name ??
+                                      language.t("dialog.model.select.title")}
                                   </span>
                                   <Icon name="chevron-down" size="small" class="shrink-0" />
                                 </Button>
@@ -1862,7 +1955,7 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
                               keybind={command.keybind("model.choose")}
                             >
                               <ModelSelectorPopover
-                                model={local.model}
+                                model={props.controls.model.selection}
                                 triggerAs={Button}
                                 triggerProps={{
                                   variant: "ghost",
@@ -1873,22 +1966,23 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
                                 }}
                                 onClose={restoreFocus}
                               >
-                                <Show when={local.model.current()?.provider?.id}>
+                                <Show when={props.controls.model.selection.current()?.provider?.id}>
                                   <ProviderIcon
-                                    id={local.model.current()?.provider?.id ?? ""}
+                                    id={props.controls.model.selection.current()?.provider?.id ?? ""}
                                     class="size-4 shrink-0 opacity-40 group-hover:opacity-100 transition-opacity duration-150"
                                     style={{ "will-change": "opacity", transform: "translateZ(0)" }}
                                   />
                                 </Show>
                                 <span class="truncate">
-                                  {local.model.current()?.name ?? language.t("dialog.model.select.title")}
+                                  {props.controls.model.selection.current()?.name ??
+                                    language.t("dialog.model.select.title")}
                                 </span>
                                 <Icon name="chevron-down" size="small" class="shrink-0" />
                               </ModelSelectorPopover>
                             </TooltipKeybind>
                           </Show>
                         </div>
-                        <Show when={variants().length > 2}>
+                        <Show when={showVariantControl()}>
                           <div
                             data-component="prompt-variant-control"
                             style={providersShouldFadeIn() ? { animation: "fade-in 0.3s" } : undefined}
@@ -1902,10 +1996,10 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
                               <Select
                                 size="normal"
                                 options={variants()}
-                                current={local.model.variant.current() ?? "default"}
+                                current={props.controls.model.selection.variant.current() ?? "default"}
                                 label={(x) => (x === "default" ? language.t("common.default") : x)}
                                 onSelect={(value) => {
-                                  local.model.variant.set(value === "default" ? undefined : value)
+                                  props.controls.model.selection.variant.set(value === "default" ? undefined : value)
                                   restoreFocus()
                                 }}
                                 class="capitalize max-w-[160px] text-text-base"

packages/app/src/components/prompt-input/attachments.test.ts

@@ -1,5 +1,5 @@
 import { describe, expect, test } from "bun:test"
-import { attachmentMime } from "./files"
+import { attachmentMime, pickAttachmentFiles } from "./files"
 import { pasteMode } from "./paste"
 
 describe("attachmentMime", () => {
@@ -24,6 +24,70 @@ describe("attachmentMime", () => {
   })
 })
 
+describe("pickAttachmentFiles", () => {
+  test("reads the current project directory for every native picker invocation", async () => {
+    const paths: string[] = []
+    const files: File[] = []
+    const file = new File(["hello"], "hello.txt", { type: "text/plain" })
+    let directory = "C:\\Projects\\LoremIpsum"
+    const picker = async (options?: { defaultPath?: string }, onFile?: (file: File) => Promise<unknown>) => {
+      paths.push(options?.defaultPath ?? "")
+      await onFile?.(file)
+    }
+
+    pickAttachmentFiles({
+      picker,
+      directory: () => directory,
+      fallback: () => undefined,
+      onFile: async (selected) => files.push(selected),
+      onError: () => undefined,
+    })
+    await Promise.resolve()
+    directory = "C:\\Projects\\DolorSit"
+    pickAttachmentFiles({
+      picker,
+      directory: () => directory,
+      fallback: () => undefined,
+      onFile: async (selected) => files.push(selected),
+      onError: () => undefined,
+    })
+    await Promise.resolve()
+    expect(files).toEqual([file, file])
+    expect(paths).toEqual(["C:\\Projects\\LoremIpsum", "C:\\Projects\\DolorSit"])
+  })
+
+  test("uses the browser file input when no native picker exists", async () => {
+    let fallback = 0
+    pickAttachmentFiles({
+      directory: () => "/projects/consectetur-adipiscing",
+      fallback: () => {
+        fallback += 1
+      },
+      onFile: async () => undefined,
+      onError: () => undefined,
+    })
+    expect(fallback).toBe(1)
+  })
+
+  test("reports native picker failures without rejecting", async () => {
+    const error = new Error("picker unavailable")
+    const errors: unknown[] = []
+    const handled = Promise.withResolvers<void>()
+    pickAttachmentFiles({
+      picker: async () => Promise.reject(error),
+      directory: () => "C:\\Projects\\LoremIpsum",
+      fallback: () => undefined,
+      onFile: async () => undefined,
+      onError: (cause) => {
+        errors.push(cause)
+        handled.resolve()
+      },
+    })
+    await handled.promise
+    expect(errors).toEqual([error])
+  })
+})
+
 describe("pasteMode", () => {
   test("uses native paste for short single-line text", () => {
     expect(pasteMode("hello world")).toBe("native")

packages/app/src/components/prompt-input/attachments.ts

@@ -1,7 +1,7 @@
 import { onMount } from "solid-js"
 import { makeEventListener } from "@solid-primitives/event-listener"
 import { showToast } from "@/utils/toast"
-import { usePrompt, type ContentPart, type ImageAttachmentPart } from "@/context/prompt"
+import { type ContentPart, type ImageAttachmentPart, type usePrompt } from "@/context/prompt"
 import { useLanguage } from "@/context/language"
 import { uuid } from "@/utils/uuid"
 import { getCursorPosition } from "./editor-dom"
@@ -26,16 +26,18 @@ function dataUrl(file: File, mime: string) {
 }
 
 type PromptAttachmentsInput = {
+  prompt: ReturnType<typeof usePrompt>
   editor: () => HTMLDivElement | undefined
   isDialogActive: () => boolean
   setDraggingType: (type: "image" | "@mention" | null) => void
   focusEditor: () => void
   addPart: (part: ContentPart) => boolean
   readClipboardImage?: () => Promise<File | null>
+  getPathForFile?: (file: File) => string
 }
 
 export function createPromptAttachments(input: PromptAttachmentsInput) {
-  const prompt = usePrompt()
+  const prompt = input.prompt
   const language = useLanguage()
 
   const warn = () => {
@@ -62,6 +64,7 @@ export function createPromptAttachments(input: PromptAttachmentsInput) {
       type: "image",
       id: uuid(),
       filename: file.name,
+      sourcePath: input.getPathForFile?.(file) || undefined,
       mime,
       dataUrl: url,
     }

packages/app/src/components/prompt-input/build-request-parts.test.ts

@@ -75,6 +75,31 @@ describe("buildRequestParts", () => {
     expect(files.map((part) => (part.type === "file" ? part.filename : ""))).toEqual(["a.png", "b.pdf"])
   })
 
+  test("preserves an external attachment source path for the model", () => {
+    const result = buildRequestParts({
+      prompt: [],
+      context: [],
+      images: [
+        {
+          type: "image",
+          id: "img_external",
+          filename: "opencode.global.dat",
+          sourcePath: "C:\\Users\\Luke\\AppData\\Roaming\\ai.opencode.desktop.beta\\opencode.global.dat",
+          mime: "text/plain",
+          dataUrl: "data:text/plain;base64,AAA",
+        },
+      ],
+      text: "inspect this",
+      messageID: "msg_external",
+      sessionID: "ses_external",
+      sessionDirectory: "C:\\Repos\\sst\\opencode",
+    })
+
+    expect(result.requestParts.find((part) => part.type === "file")?.filename).toBe(
+      "C:\\Users\\Luke\\AppData\\Roaming\\ai.opencode.desktop.beta\\opencode.global.dat",
+    )
+  })
+
   test("deduplicates context files when prompt already includes same path", () => {
     const prompt: Prompt = [{ type: "file", path: "src/foo.ts", content: "@src/foo.ts", start: 0, end: 11 }]
 

packages/app/src/components/prompt-input/build-request-parts.ts

@@ -188,7 +188,7 @@ export function buildRequestParts(input: BuildRequestPartsInput) {
       type: "file",
       mime: attachment.mime,
       url: attachment.dataUrl,
-      filename: attachment.filename,
+      filename: attachment.sourcePath ?? attachment.filename,
     } satisfies PromptRequestPart
   })
 

packages/app/src/components/prompt-input/context-items.tsx

@@ -50,7 +50,7 @@ export const PromptContextItems: Component<ContextItemsProps> = (props) => {
                 >
                   <div class="flex items-center gap-1.5">
                     <FileIcon node={{ path: item.path, type: "file" }} class="shrink-0 size-3.5" />
-                    <div class="flex items-center text-11-regular min-w-0 font-medium">
+                    <div class="flex items-center text-[12px] min-w-0 font-medium leading-5">
                       <span class="text-text-strong whitespace-nowrap">{label}</span>
                       <Show when={item.selection}>
                         {(sel) => (

packages/app/src/components/prompt-input/files.ts

@@ -2,6 +2,38 @@ import { ACCEPTED_FILE_TYPES, ACCEPTED_IMAGE_TYPES } from "@/constants/file-pick
 
 export { ACCEPTED_FILE_TYPES }
 
+type AttachmentPicker = (
+  options: {
+    defaultPath?: string
+    multiple?: boolean
+    accept?: string[]
+  },
+  onFile: (file: File) => Promise<unknown>,
+) => Promise<void>
+
+export function pickAttachmentFiles(input: {
+  picker?: AttachmentPicker
+  directory: () => string
+  fallback: () => void
+  onFile: (file: File) => Promise<unknown>
+  onError: (error: unknown) => void
+}) {
+  if (!input.picker) {
+    input.fallback()
+    return
+  }
+  void input
+    .picker(
+      {
+        defaultPath: input.directory(),
+        multiple: true,
+        accept: ACCEPTED_FILE_TYPES,
+      },
+      input.onFile,
+    )
+    .catch(input.onError)
+}
+
 const IMAGE_MIMES = new Set(ACCEPTED_IMAGE_TYPES)
 const IMAGE_EXTS = new Map([
   ["gif", "image/gif"],

packages/app/src/components/prompt-input/submit.test.ts

@@ -26,6 +26,22 @@ let selected = "/repo/worktree-a"
 let variant: string | undefined
 
 const promptValue: Prompt = [{ type: "text", content: "ls", start: 0, end: 2 }]
+const prompt = {
+  ready: () => Object.assign(() => true, { promise: Promise.resolve(true) }),
+  current: () => promptValue,
+  cursor: () => 0,
+  dirty: () => true,
+  reset: () => undefined,
+  set: () => undefined,
+  context: {
+    add: () => undefined,
+    remove: () => undefined,
+    removeComment: () => undefined,
+    updateComment: () => undefined,
+    replaceComments: () => undefined,
+    items: () => [],
+  },
+}
 
 const clientFor = (directory: string) => {
   createdClients.push(directory)
@@ -61,6 +77,8 @@ beforeAll(async () => {
   mock.module("@solidjs/router", () => ({
     useNavigate: () => () => undefined,
     useParams: () => params,
+    useLocation: () => ({}),
+    useSearchParams: () => [{}, () => undefined],
   }))
 
   mock.module("@opencode-ai/sdk/v2/client", () => ({
@@ -71,6 +89,7 @@ beforeAll(async () => {
   }))
 
   mock.module("@opencode-ai/ui/toast", () => ({
+    Toast: { Region: () => null },
     showToast: () => 0,
   }))
 
@@ -103,19 +122,20 @@ beforeAll(async () => {
     }),
   }))
 
-  mock.module("@/context/prompt", () => ({
-    usePrompt: () => ({
-      current: () => promptValue,
-      reset: () => undefined,
-      set: () => undefined,
-      context: {
-        add: () => undefined,
-        remove: () => undefined,
-        items: () => [],
-      },
+  mock.module("@/context/server", () => ({
+    useServer: () => ({ key: "server-key" }),
+  }))
+
+  mock.module("@/context/tabs", () => ({
+    useTabs: () => ({
+      promoteDraft: () => undefined,
     }),
   }))
 
+  mock.module("@/context/prompt", () => ({
+    usePrompt: () => prompt,
+  }))
+
   mock.module("@/context/layout", () => ({
     useLayout: () => ({
       handoff: {
@@ -127,6 +147,7 @@ beforeAll(async () => {
   mock.module("@/context/sdk", () => ({
     useSDK: () => {
       const sdk = {
+        scope: "local",
         directory: "/repo/main",
         client: rootClient,
         url: "http://localhost:4096",
@@ -134,12 +155,12 @@ beforeAll(async () => {
           return clientFor(opts.directory)
         },
       }
-      return sdk
+      return () => sdk
     },
   }))
 
   mock.module("@/context/sync", () => ({
-    useSync: () => ({
+    useSync: () => () => ({
       data: { command: [] },
       session: {
         optimistic: {
@@ -163,7 +184,7 @@ beforeAll(async () => {
   }))
 
   mock.module("@/context/server-sync", () => ({
-    useServerSync: () => ({
+    useServerSync: () => () => ({
       child: (directory: string) => {
         syncedDirectories.push(directory)
         storedSessions[directory] ??= []
@@ -219,6 +240,7 @@ beforeEach(() => {
 describe("prompt submit worktree selection", () => {
   test("reads the latest worktree accessor value per submit", async () => {
     const submit = createPromptSubmit({
+      prompt,
       info: () => undefined,
       imageAttachments: () => [],
       commentCount: () => 0,
@@ -256,6 +278,7 @@ describe("prompt submit worktree selection", () => {
 
   test("applies auto-accept to newly created sessions", async () => {
     const submit = createPromptSubmit({
+      prompt,
       info: () => undefined,
       imageAttachments: () => [],
       commentCount: () => 0,
@@ -286,6 +309,7 @@ describe("prompt submit worktree selection", () => {
     variant = "high"
 
     const submit = createPromptSubmit({
+      prompt,
       info: () => ({ id: "session-1" }),
       imageAttachments: () => [],
       commentCount: () => 0,
@@ -317,6 +341,7 @@ describe("prompt submit worktree selection", () => {
 
   test("seeds new sessions before optimistic prompts are added", async () => {
     const submit = createPromptSubmit({
+      prompt,
       info: () => undefined,
       imageAttachments: () => [],
       commentCount: () => 0,

packages/app/src/components/prompt-input/submit.ts

@@ -2,22 +2,25 @@ import type { Message, Session } from "@opencode-ai/sdk/v2/client"
 import { showToast } from "@/utils/toast"
 import { base64Encode } from "@opencode-ai/core/util/encode"
 import { Binary } from "@opencode-ai/core/util/binary"
-import { useNavigate, useParams } from "@solidjs/router"
+import { useNavigate, useParams, useSearchParams } from "@solidjs/router"
 import { batch, type Accessor } from "solid-js"
 import type { FileSelection } from "@/context/file"
-import { useServerSync } from "@/context/server-sync"
+import { useServer } from "@/context/server"
+import { useTabs } from "@/context/tabs"
+import { useServerSync, type ServerSync } from "@/context/server-sync"
 import { useLanguage } from "@/context/language"
 import { useLayout } from "@/context/layout"
 import { useLocal } from "@/context/local"
 import { usePermission } from "@/context/permission"
-import { type ContextItem, type ImageAttachmentPart, type Prompt, usePrompt } from "@/context/prompt"
-import { useSDK } from "@/context/sdk"
-import { useSync } from "@/context/sync"
+import { type ContextItem, type ImageAttachmentPart, type Prompt, type usePrompt } from "@/context/prompt"
+import { useSDK, type DirectorySDK } from "@/context/sdk"
+import { useSync, type DirectorySync } from "@/context/sync"
 import { Identifier } from "@/utils/id"
 import { Worktree as WorktreeState } from "@/utils/worktree"
 import { buildRequestParts } from "./build-request-parts"
 import { setCursorPosition } from "./editor-dom"
 import { formatServerError } from "@/utils/server-errors"
+import { ScopedKey } from "@/utils/server-scope"
 
 type PendingPrompt = {
   abort: AbortController
@@ -37,9 +40,9 @@ export type FollowupDraft = {
 }
 
 type FollowupSendInput = {
-  client: ReturnType<typeof useSDK>["client"]
-  serverSync: ReturnType<typeof useServerSync>
-  sync: ReturnType<typeof useSync>
+  client: DirectorySDK["client"]
+  serverSync: ServerSync
+  sync: DirectorySync
   draft: FollowupDraft
   messageID?: string
   optimisticBusy?: boolean
@@ -171,6 +174,7 @@ export async function sendFollowupDraft(input: FollowupSendInput) {
 }
 
 type PromptSubmitInput = {
+  prompt: ReturnType<typeof usePrompt>
   info: Accessor<{ id: string } | undefined>
   imageAttachments: Accessor<ImageAttachmentPart[]>
   commentCount: Accessor<number>
@@ -208,10 +212,14 @@ export function createPromptSubmit(input: PromptSubmitInput) {
   const serverSync = useServerSync()
   const local = useLocal()
   const permission = usePermission()
-  const prompt = usePrompt()
+  const prompt = input.prompt
   const layout = useLayout()
   const language = useLanguage()
   const params = useParams()
+  const [search] = useSearchParams<{ draftId?: string }>()
+  const server = useServer()
+  const tabs = useTabs()
+  const pendingKey = (sessionID: string) => ScopedKey.from(sdk().scope, sessionID)
 
   const errorMessage = (err: unknown) => {
     if (err && typeof err === "object" && "data" in err) {
@@ -226,21 +234,22 @@ export function createPromptSubmit(input: PromptSubmitInput) {
     const sessionID = params.id
     if (!sessionID) return Promise.resolve()
 
-    serverSync.todo.set(sessionID, [])
-    const [, setStore] = serverSync.child(sdk.directory)
+    serverSync().todo.set(sessionID, [])
+    const [, setStore] = serverSync().child(sdk().directory)
     setStore("todo", sessionID, [])
 
     input.onAbort?.()
 
-    const queued = pending.get(sessionID)
+    const key = pendingKey(sessionID)
+    const queued = pending.get(key)
     if (queued) {
       queued.abort.abort()
       queued.cleanup()
-      pending.delete(sessionID)
+      pending.delete(key)
       return Promise.resolve()
     }
-    return sdk.client.session
-      .abort({
+    return sdk()
+      .client.session.abort({
         sessionID,
       })
       .catch(() => {})
@@ -273,7 +282,7 @@ export function createPromptSubmit(input: PromptSubmitInput) {
   }
 
   const seed = (dir: string, info: Session) => {
-    const [, setStore] = serverSync.child(dir)
+    const [, setStore] = serverSync().child(dir)
     setStore("session", (list: Session[]) => {
       const result = Binary.search(list, info.id, (item) => item.id)
       const next = [...list]
@@ -313,13 +322,13 @@ export function createPromptSubmit(input: PromptSubmitInput) {
     input.addToHistory(currentPrompt, mode)
     input.resetHistoryNavigation()
 
-    const projectDirectory = sdk.directory
+    const projectDirectory = sdk().directory
     const isNewSession = !params.id
     const shouldAutoAccept = isNewSession && input.autoAccept()
     const worktreeSelection = input.newSessionWorktree?.() || "main"
 
     let sessionDirectory = projectDirectory
-    let client = sdk.client
+    let client = sdk().client
 
     if (isNewSession) {
       if (worktreeSelection === "create") {
@@ -341,7 +350,7 @@ export function createPromptSubmit(input: PromptSubmitInput) {
           })
           return
         }
-        WorktreeState.pending(createdWorktree.directory)
+        WorktreeState.pending(sdk().scope, createdWorktree.directory)
         sessionDirectory = createdWorktree.directory
       }
 
@@ -350,11 +359,11 @@ export function createPromptSubmit(input: PromptSubmitInput) {
       }
 
       if (sessionDirectory !== projectDirectory) {
-        client = sdk.createClient({
+        client = sdk().createClient({
           directory: sessionDirectory,
           throwOnError: true,
         })
-        serverSync.child(sessionDirectory)
+        serverSync().child(sessionDirectory)
       }
 
       input.onNewSessionWorktreeReset?.()
@@ -378,7 +387,14 @@ export function createPromptSubmit(input: PromptSubmitInput) {
         if (shouldAutoAccept) permission.enableAutoAccept(session.id, sessionDirectory)
         local.session.promote(sessionDirectory, session.id)
         layout.handoff.setTabs(base64Encode(sessionDirectory), session.id)
-        navigate(`/${base64Encode(sessionDirectory)}/session/${session.id}`)
+        const draftID = search.draftId
+        if (draftID)
+          tabs.promoteDraft(draftID, {
+            server: server.key,
+            dirBase64: base64Encode(sessionDirectory),
+            sessionId: session.id,
+          })
+        else navigate(`/${base64Encode(sessionDirectory)}/session/${session.id}`)
       }
     }
     if (!session) {
@@ -455,7 +471,7 @@ export function createPromptSubmit(input: PromptSubmitInput) {
     if (text.startsWith("/")) {
       const [cmdName, ...args] = text.split(" ")
       const commandName = cmdName.slice(1)
-      const customCommand = sync.data.command.find((c) => c.name === commandName)
+      const customCommand = sync().data.command.find((c) => c.name === commandName)
       if (customCommand) {
         clearInput()
         client.session
@@ -489,7 +505,7 @@ export function createPromptSubmit(input: PromptSubmitInput) {
     const messageID = Identifier.ascending("message")
 
     const removeOptimisticMessage = () => {
-      sync.session.optimistic.remove({
+      sync().session.optimistic.remove({
         directory: sessionDirectory,
         sessionID: session.id,
         messageID,
@@ -500,24 +516,24 @@ export function createPromptSubmit(input: PromptSubmitInput) {
     clearInput()
 
     const waitForWorktree = async () => {
-      const worktree = WorktreeState.get(sessionDirectory)
+      const worktree = WorktreeState.get(sdk().scope, sessionDirectory)
       if (!worktree || worktree.status !== "pending") return true
 
       if (sessionDirectory === projectDirectory) {
-        sync.set("session_status", session.id, { type: "busy" })
+        sync().set("session_status", session.id, { type: "busy" })
       }
 
       const controller = new AbortController()
       const cleanup = () => {
         if (sessionDirectory === projectDirectory) {
-          sync.set("session_status", session.id, { type: "idle" })
+          sync().set("session_status", session.id, { type: "idle" })
         }
         removeOptimisticMessage()
         restoreCommentItems(commentItems)
         restoreInput()
       }
 
-      pending.set(session.id, { abort: controller, cleanup })
+      pending.set(pendingKey(session.id), { abort: controller, cleanup })
 
       const abortWait = new Promise<Awaited<ReturnType<typeof WorktreeState.wait>>>((resolve) => {
         if (controller.signal.aborted) {
@@ -544,11 +560,15 @@ export function createPromptSubmit(input: PromptSubmitInput) {
         }, timeoutMs)
       })
 
-      const result = await Promise.race([WorktreeState.wait(sessionDirectory), abortWait, timeout]).finally(() => {
+      const result = await Promise.race([
+        WorktreeState.wait(sdk().scope, sessionDirectory),
+        abortWait,
+        timeout,
+      ]).finally(() => {
         if (timer.id === undefined) return
         clearTimeout(timer.id)
       })
-      pending.delete(session.id)
+      pending.delete(pendingKey(session.id))
       if (controller.signal.aborted) return false
       if (result.status === "failed") throw new Error(result.message)
       return true
@@ -556,16 +576,16 @@ export function createPromptSubmit(input: PromptSubmitInput) {
 
     void sendFollowupDraft({
       client,
-      sync,
-      serverSync,
+      sync: sync(),
+      serverSync: serverSync(),
       draft,
       messageID,
       optimisticBusy: sessionDirectory === projectDirectory,
       before: waitForWorktree,
     }).catch((err) => {
-      pending.delete(session.id)
+      pending.delete(pendingKey(session.id))
       if (sessionDirectory === projectDirectory) {
-        sync.set("session_status", session.id, { type: "idle" })
+        sync().set("session_status", session.id, { type: "idle" })
       }
       showToast({
         title: language.t("prompt.toast.promptSendFailed.title"),

packages/app/src/components/server/server-row-menu.tsx

@@ -0,0 +1,59 @@
+import { Icon as IconV2 } from "@opencode-ai/ui/v2/icon"
+import { IconButtonV2 } from "@opencode-ai/ui/v2/icon-button-v2"
+import { MenuV2 } from "@opencode-ai/ui/v2/menu-v2"
+import { type Component, Show } from "solid-js"
+import { useServerManagementController } from "@/components/dialog-select-server"
+import { useLanguage } from "@/context/language"
+import { ServerConnection } from "@/context/server"
+
+export const ServerRowMenu: Component<{
+  server: ServerConnection.Any
+  controller: ReturnType<typeof useServerManagementController>
+  onEdit: (server: ServerConnection.Http) => void
+  open?: boolean
+  onOpenChange?: (open: boolean) => void
+}> = (props) => {
+  const language = useLanguage()
+  const key = ServerConnection.key(props.server)
+  const builtin = ServerConnection.builtin(props.server)
+  const isDefault = () => props.controller.defaultKey() === key
+
+  return (
+    <MenuV2 gutter={4} modal={false} placement="bottom-end" open={props.open} onOpenChange={props.onOpenChange}>
+      <MenuV2.Trigger
+        as={IconButtonV2}
+        variant="ghost-muted"
+        size="small"
+        icon={<IconV2 name="outline-dots" />}
+        aria-label={language.t("common.moreOptions")}
+      />
+      <MenuV2.Portal>
+        <MenuV2.Content>
+          <MenuV2.Group>
+            <MenuV2.GroupLabel>{language.t("settings.section.server")}</MenuV2.GroupLabel>
+            <MenuV2.Item
+              disabled={builtin || props.server.type !== "http"}
+              onSelect={() => props.onEdit(props.server as ServerConnection.Http)}
+            >
+              {language.t("dialog.server.menu.edit")}
+            </MenuV2.Item>
+            <Show when={props.controller.canDefault() && !isDefault()}>
+              <MenuV2.Item onSelect={() => props.controller.setDefault(key)}>
+                {language.t("dialog.server.menu.default")}
+              </MenuV2.Item>
+            </Show>
+            <Show when={props.controller.canDefault() && isDefault()}>
+              <MenuV2.Item onSelect={() => props.controller.setDefault(null)}>
+                {language.t("dialog.server.menu.defaultRemove")}
+              </MenuV2.Item>
+            </Show>
+            <MenuV2.Separator />
+            <MenuV2.Item disabled={builtin} onSelect={() => props.controller.handleRemove(key)}>
+              {language.t("dialog.server.menu.delete")}
+            </MenuV2.Item>
+          </MenuV2.Group>
+        </MenuV2.Content>
+      </MenuV2.Portal>
+    </MenuV2>
+  )
+}

packages/app/src/components/session-context-usage.tsx

@@ -42,7 +42,7 @@ export function SessionContextUsage(props: SessionContextUsageProps) {
     pathFromTab: file.pathFromTab,
     normalizeTab: (tab) => (tab.startsWith("file://") ? file.tab(tab) : tab),
   })
-  const messages = createMemo(() => (params.id ? (sync.data.message[params.id] ?? []) : []))
+  const messages = createMemo(() => (params.id ? (sync().data.message[params.id] ?? []) : []))
 
   const usd = createMemo(
     () =>

packages/app/src/components/session/session-context-tab.tsx

@@ -96,13 +96,13 @@ export function SessionContextTab() {
   const providers = useProviders()
   const { params, view } = useSessionLayout()
 
-  const info = createMemo(() => (params.id ? sync.session.get(params.id) : undefined))
+  const info = createMemo(() => (params.id ? sync().session.get(params.id) : undefined))
 
   const messages = createMemo(
     () => {
       const id = params.id
       if (!id) return emptyMessages
-      return (sync.data.message[id] ?? []) as Message[]
+      return (sync().data.message[id] ?? []) as Message[]
     },
     emptyMessages,
     { equals: same },
@@ -180,7 +180,7 @@ export function SessionContextTab() {
         if (!c?.input) return []
         return estimateSessionContextBreakdown({
           messages: messages(),
-          parts: sync.data.part as Record<string, Part[] | undefined>,
+          parts: sync().data.part as Record<string, Part[] | undefined>,
           input: c.input,
           systemPrompt: systemPrompt(),
         })
@@ -221,7 +221,7 @@ export function SessionContextTab() {
   let scroll: HTMLDivElement | undefined
   let frame: number | undefined
   let pending: { x: number; y: number } | undefined
-  const getParts = (id: string) => (sync.data.part[id] ?? []) as Part[]
+  const getParts = (id: string) => (sync().data.part[id] ?? []) as Part[]
 
   const restoreScroll = () => {
     const el = scroll

packages/app/src/components/session/session-header.tsx

@@ -155,11 +155,9 @@ export function SessionHeader() {
   })
   const hotkey = createMemo(() => command.keybind("file.open"))
   const os = createMemo(() => detectOS(platform))
-  const isDesktopV2 = createMemo(() => platform.platform === "desktop" && settings.general.newLayoutDesigns())
-  const search = createMemo(() => (isDesktopV2() ? settings.general.showSearch() : true))
-  const tree = createMemo(() => (isDesktopV2() ? settings.general.showFileTree() : true))
-  const term = createMemo(() => (isDesktopV2() ? settings.general.showTerminal() : true))
-  const status = createMemo(() => (isDesktopV2() ? settings.general.showStatus() : true))
+  const isV2 = settings.general.newLayoutDesigns
+  const search = settings.visibility.search
+  const status = settings.visibility.status
 
   const [exists, setExists] = createStore<Partial<Record<OpenApp, boolean>>>({
     finder: true,
@@ -231,7 +229,7 @@ export function SessionHeader() {
   )
   const opening = createMemo(() => openRequest.app !== undefined)
   const tint = createMemo(() =>
-    messageAgentColor(params.id ? sync.data.message[params.id] : undefined, sync.data.agent),
+    messageAgentColor(params.id ? sync().data.message[params.id] : undefined, sync().data.agent),
   )
   const v2ActionsState = createMemo<SessionHeaderV2ActionsState>(() => ({
     statusVisible: status(),
@@ -322,7 +320,7 @@ export function SessionHeader() {
         {(mount) => (
           <Portal mount={mount()}>
             <Show
-              when={isDesktopV2}
+              when={isV2}
               fallback={
                 <div class="flex items-center gap-2">
                   <Show when={projectDirectory()}>
@@ -444,23 +442,21 @@ export function SessionHeader() {
                         <StatusPopover />
                       </Tooltip>
                     </Show>
-                    <Show when={term()}>
-                      <TooltipKeybind
-                        title={language.t("command.terminal.toggle")}
-                        keybind={command.keybind("terminal.toggle")}
+                    <TooltipKeybind
+                      title={language.t("command.terminal.toggle")}
+                      keybind={command.keybind("terminal.toggle")}
+                    >
+                      <Button
+                        variant="ghost"
+                        class="group/terminal-toggle titlebar-icon w-8 h-6 p-0 box-border shrink-0"
+                        onClick={toggleTerminal}
+                        aria-label={language.t("command.terminal.toggle")}
+                        aria-expanded={view().terminal.opened()}
+                        aria-controls="terminal-panel"
                       >
-                        <Button
-                          variant="ghost"
-                          class="group/terminal-toggle titlebar-icon w-8 h-6 p-0 box-border shrink-0"
-                          onClick={toggleTerminal}
-                          aria-label={language.t("command.terminal.toggle")}
-                          aria-expanded={view().terminal.opened()}
-                          aria-controls="terminal-panel"
-                        >
-                          <Icon size="small" name={view().terminal.opened() ? "terminal-active" : "terminal"} />
-                        </Button>
-                      </TooltipKeybind>
-                    </Show>
+                        <Icon size="small" name={view().terminal.opened() ? "terminal-active" : "terminal"} />
+                      </Button>
+                    </TooltipKeybind>
 
                     <div class="hidden md:flex items-center gap-1 shrink-0">
                       <TooltipKeybind
@@ -479,32 +475,30 @@ export function SessionHeader() {
                         </Button>
                       </TooltipKeybind>
 
-                      <Show when={tree()}>
-                        <TooltipKeybind
-                          title={language.t("command.fileTree.toggle")}
-                          keybind={command.keybind("fileTree.toggle")}
+                      <TooltipKeybind
+                        title={language.t("command.fileTree.toggle")}
+                        keybind={command.keybind("fileTree.toggle")}
+                      >
+                        <Button
+                          variant="ghost"
+                          class="titlebar-icon w-8 h-6 p-0 box-border"
+                          onClick={() => layout.fileTree.toggle()}
+                          aria-label={language.t("command.fileTree.toggle")}
+                          aria-expanded={layout.fileTree.opened()}
+                          aria-controls="file-tree-panel"
                         >
-                          <Button
-                            variant="ghost"
-                            class="titlebar-icon w-8 h-6 p-0 box-border"
-                            onClick={() => layout.fileTree.toggle()}
-                            aria-label={language.t("command.fileTree.toggle")}
-                            aria-expanded={layout.fileTree.opened()}
-                            aria-controls="file-tree-panel"
-                          >
-                            <div class="relative flex items-center justify-center size-4">
-                              <Icon
-                                size="small"
-                                name={layout.fileTree.opened() ? "file-tree-active" : "file-tree"}
-                                classList={{
-                                  "text-icon-strong": layout.fileTree.opened(),
-                                  "text-icon-weak": !layout.fileTree.opened(),
-                                }}
-                              />
-                            </div>
-                          </Button>
-                        </TooltipKeybind>
-                      </Show>
+                          <div class="relative flex items-center justify-center size-4">
+                            <Icon
+                              size="small"
+                              name={layout.fileTree.opened() ? "file-tree-active" : "file-tree"}
+                              classList={{
+                                "text-icon-strong": layout.fileTree.opened(),
+                                "text-icon-weak": !layout.fileTree.opened(),
+                              }}
+                            />
+                          </div>
+                        </Button>
+                      </TooltipKeybind>
                     </div>
                   </div>
                 </div>

packages/app/src/components/session/session-new-design-view.tsx

@@ -4,7 +4,7 @@ import { NEW_SESSION_CONTENT_WIDTH } from "@/pages/session/new-session-layout"
 
 export function NewSessionDesignView(props: { children: JSX.Element }) {
   return (
-    <div data-component="session-new-design" class="relative size-full overflow-hidden bg-v2-background-bg-deep">
+    <div data-component="session-new-design" class="relative size-full overflow-hidden bg-v2-background-bg-deep ">
       <div class="absolute inset-x-0 top-[25.375%] flex justify-center px-6">
         <div class={NEW_SESSION_CONTENT_WIDTH}>
           <WordmarkV2 class="h-auto w-full text-v2-icon-icon-base" />

packages/app/src/components/session/session-new-view.tsx

@@ -20,24 +20,24 @@ export function NewSessionView(props: NewSessionViewProps) {
   const sdk = useSDK()
   const language = useLanguage()
 
-  const sandboxes = createMemo(() => sync.project?.sandboxes ?? [])
+  const sandboxes = createMemo(() => sync().project?.sandboxes ?? [])
   const options = createMemo(() => [MAIN_WORKTREE, ...sandboxes(), CREATE_WORKTREE])
   const current = createMemo(() => {
     const selection = props.worktree
     if (options().includes(selection)) return selection
     return MAIN_WORKTREE
   })
-  const projectRoot = createMemo(() => sync.project?.worktree ?? sdk.directory)
+  const projectRoot = createMemo(() => sync().project?.worktree ?? sdk().directory)
   const isWorktree = createMemo(() => {
-    const project = sync.project
+    const project = sync().project
     if (!project) return false
-    return sdk.directory !== project.worktree
+    return sdk().directory !== project.worktree
   })
 
   const label = (value: string) => {
     if (value === MAIN_WORKTREE) {
       if (isWorktree()) return language.t("session.new.worktree.main")
-      const branch = sync.data.vcs?.branch
+      const branch = sync().data.vcs?.branch
       if (branch) return language.t("session.new.worktree.mainWithBranch", { branch })
       return language.t("session.new.worktree.main")
     }
@@ -69,7 +69,7 @@ export function NewSessionView(props: NewSessionViewProps) {
                 {label(current())}
               </div>
             </div>
-            <Show when={sync.project}>
+            <Show when={sync().project}>
               {(project) => (
                 <div class="flex items-start justify-center gap-3 min-h-5">
                   <div class="text-12-medium text-text-weak leading-5 min-w-0 max-w-160 break-words text-center">

packages/app/src/components/settings-general.tsx

@@ -1,5 +1,4 @@
 import { Component, Show, createMemo, createResource, onMount, type JSX } from "solid-js"
-import { createStore } from "solid-js/store"
 import { Button } from "@opencode-ai/ui/button"
 import { Icon } from "@opencode-ai/ui/icon"
 import { Select } from "@opencode-ai/ui/select"
@@ -8,13 +7,13 @@ import { TextField } from "@opencode-ai/ui/text-field"
 import { Tooltip } from "@opencode-ai/ui/tooltip"
 import { useTheme, type ColorScheme } from "@opencode-ai/ui/theme/context"
 import { useDialog } from "@opencode-ai/ui/context/dialog"
-import { showToast } from "@/utils/toast"
 import { useParams } from "@solidjs/router"
 import { useLanguage } from "@/context/language"
 import { usePermission } from "@/context/permission"
 import { usePlatform, type DisplayBackend } from "@/context/platform"
 import { useServerSync } from "@/context/server-sync"
 import { useServerSDK } from "@/context/server-sdk"
+import { useUpdaterAction } from "./updater-action"
 import {
   monoDefault,
   monoFontFamily,
@@ -91,9 +90,7 @@ export const SettingsGeneral: Component = () => {
   const params = useParams()
   const settings = useSettings()
 
-  const [store, setStore] = createStore({
-    checking: false,
-  })
+  const updater = useUpdaterAction()
 
   const linux = createMemo(() => platform.platform === "desktop" && platform.os === "linux")
   const dir = createMemo(() => decode64(params.dir))
@@ -123,67 +120,15 @@ export const SettingsGeneral: Component = () => {
   }
   const desktop = createMemo(() => platform.platform === "desktop")
 
-  const check = () => {
-    if (!platform.checkUpdate) return
-    setStore("checking", true)
-
-    void platform
-      .checkUpdate()
-      .then((result) => {
-        if (!result.updateAvailable) {
-          showToast({
-            variant: "success",
-            icon: "circle-check",
-            title: language.t("settings.updates.toast.latest.title"),
-            description: language.t("settings.updates.toast.latest.description", { version: platform.version ?? "" }),
-          })
-          return
-        }
-
-        const actions = platform.updateAndRestart
-          ? [
-              {
-                label: language.t("toast.update.action.installRestart"),
-                onClick: async () => {
-                  await platform.updateAndRestart!()
-                },
-              },
-              {
-                label: language.t("toast.update.action.notYet"),
-                onClick: "dismiss" as const,
-              },
-            ]
-          : [
-              {
-                label: language.t("toast.update.action.notYet"),
-                onClick: "dismiss" as const,
-              },
-            ]
-
-        showToast({
-          persistent: true,
-          icon: "download",
-          title: language.t("toast.update.title"),
-          description: language.t("toast.update.description", { version: result.version ?? "" }),
-          actions,
-        })
-      })
-      .catch((err: unknown) => {
-        const message = err instanceof Error ? err.message : String(err)
-        showToast({ title: language.t("common.requestFailed"), description: message })
-      })
-      .finally(() => setStore("checking", false))
-  }
-
   const themeOptions = createMemo<ThemeOption[]>(() => theme.ids().map((id) => ({ id, name: theme.name(id) })))
 
   const serverSync = useServerSync()
-  const globalSdk = useServerSDK()
+  const serverSdk = useServerSDK()
 
   const [shells] = createResource(
     () =>
-      globalSdk.client.pty
-        .shells()
+      serverSdk()
+        .client.pty.shells()
         .then((res) => res.data ?? [])
         .catch(() => [] as ShellOption[]),
     { initialValue: [] as ShellOption[] },
@@ -206,11 +151,11 @@ export const SettingsGeneral: Component = () => {
   })
 
   const autoOption = { id: "auto", value: "", label: language.t("settings.general.row.shell.autoDefault") }
-  const currentShell = createMemo(() => serverSync.data.config.shell ?? "")
+  const currentShell = createMemo(() => serverSync().data.config.shell ?? "")
 
   const shellOptions = createMemo<ShellSelectOption[]>(() => {
     const list = shells.latest
-    const current = serverSync.data.config.shell
+    const current = serverSync().data.config.shell
 
     const nameCounts = new Map<string, number>()
     for (const s of list) {
@@ -345,7 +290,7 @@ export const SettingsGeneral: Component = () => {
             onSelect={(option) => {
               if (!option) return
               if (option.value === currentShell()) return
-              serverSync.updateConfig({ shell: option.value })
+              serverSync().updateConfig({ shell: option.value })
             }}
             variant="secondary"
             size="small"
@@ -723,19 +668,6 @@ export const SettingsGeneral: Component = () => {
       <h3 class="text-14-medium text-text-strong pb-2">{language.t("settings.general.section.updates")}</h3>
 
       <SettingsList>
-        <SettingsRow
-          title={language.t("settings.updates.row.startup.title")}
-          description={language.t("settings.updates.row.startup.description")}
-        >
-          <div data-action="settings-updates-startup">
-            <Switch
-              checked={settings.updates.startup()}
-              disabled={!platform.checkUpdate}
-              onChange={(checked) => settings.updates.setStartup(checked)}
-            />
-          </div>
-        </SettingsRow>
-
         <SettingsRow
           title={language.t("settings.general.row.releaseNotes.title")}
           description={language.t("settings.general.row.releaseNotes.description")}
@@ -752,10 +684,8 @@ export const SettingsGeneral: Component = () => {
           title={language.t("settings.updates.row.check.title")}
           description={language.t("settings.updates.row.check.description")}
         >
-          <Button size="small" variant="secondary" disabled={store.checking || !platform.checkUpdate} onClick={check}>
-            {store.checking
-              ? language.t("settings.updates.action.checking")
-              : language.t("settings.updates.action.checkNow")}
+          <Button size="small" variant="secondary" disabled={!updater.action().run} onClick={updater.run}>
+            {language.t(updater.action().label)}
           </Button>
         </SettingsRow>
       </SettingsList>

packages/app/src/components/settings-models.tsx

@@ -9,6 +9,7 @@ import { useLanguage } from "@/context/language"
 import { useModels } from "@/context/models"
 import { popularProviders } from "@/hooks/use-providers"
 import { SettingsList } from "./settings-list"
+import { SettingsServerPicker, SettingsServerScope } from "./settings-server-picker"
 
 type ModelItem = ReturnType<ReturnType<typeof useModels>["list"]>[number]
 
@@ -32,6 +33,14 @@ const ListEmptyState: Component<{ message: string; filter: string }> = (props) =
 }
 
 export const SettingsModels: Component = () => {
+  return (
+    <SettingsServerScope>
+      <SettingsModelsContent />
+    </SettingsServerScope>
+  )
+}
+
+const SettingsModelsContent: Component = () => {
   const language = useLanguage()
   const models = useModels()
 
@@ -61,7 +70,10 @@ export const SettingsModels: Component = () => {
     <div class="flex flex-col h-full overflow-y-auto no-scrollbar px-4 pb-10 sm:px-10 sm:pb-10">
       <div class="sticky top-0 z-10 bg-[linear-gradient(to_bottom,var(--surface-stronger-non-alpha)_calc(100%_-_24px),transparent)]">
         <div class="flex flex-col gap-4 pt-6 pb-6 max-w-[720px]">
-          <h2 class="text-16-medium text-text-strong">{language.t("settings.models.title")}</h2>
+          <div class="flex items-center justify-between gap-4">
+            <h2 class="text-16-medium text-text-strong">{language.t("settings.models.title")}</h2>
+            <SettingsServerPicker />
+          </div>
           <div class="flex items-center gap-2 px-3 h-9 rounded-lg bg-surface-base">
             <Icon name="magnifying-glass" class="text-icon-weak-base flex-shrink-0" />
             <TextField

packages/app/src/components/settings-providers.tsx

@@ -12,6 +12,7 @@ import { DialogConnectProvider } from "./dialog-connect-provider"
 import { DialogSelectProvider } from "./dialog-select-provider"
 import { DialogCustomProvider } from "./dialog-custom-provider"
 import { SettingsList } from "./settings-list"
+import { SettingsServerPicker, SettingsServerScope } from "./settings-server-picker"
 
 type ProviderSource = "env" | "api" | "config" | "custom"
 type ProviderItem = ReturnType<ReturnType<typeof useProviders>["connected"]>[number]
@@ -28,6 +29,14 @@ const PROVIDER_NOTES = [
 ] as const
 
 export const SettingsProviders: Component = () => {
+  return (
+    <SettingsServerScope>
+      <SettingsProvidersContent />
+    </SettingsServerScope>
+  )
+}
+
+const SettingsProvidersContent: Component = () => {
   const dialog = useDialog()
   const language = useLanguage()
   const serverSDK = useServerSDK()
@@ -74,7 +83,7 @@ export const SettingsProviders: Component = () => {
   const note = (id: string) => PROVIDER_NOTES.find((item) => item.match(id))?.key
 
   const isConfigCustom = (providerID: string) => {
-    const provider = serverSync.data.config.provider?.[providerID]
+    const provider = serverSync().data.config.provider?.[providerID]
     if (!provider) return false
     if (provider.npm !== "@ai-sdk/openai-compatible") return false
     if (!provider.models || Object.keys(provider.models).length === 0) return false
@@ -82,11 +91,11 @@ export const SettingsProviders: Component = () => {
   }
 
   const disableProvider = async (providerID: string, name: string) => {
-    const before = serverSync.data.config.disabled_providers ?? []
+    const before = serverSync().data.config.disabled_providers ?? []
     const next = before.includes(providerID) ? before : [...before, providerID]
-    serverSync.set("config", "disabled_providers", next)
+    serverSync().set("config", "disabled_providers", next)
 
-    await serverSync
+    await serverSync()
       .updateConfig({ disabled_providers: next })
       .then(() => {
         showToast({
@@ -97,7 +106,7 @@ export const SettingsProviders: Component = () => {
         })
       })
       .catch((err: unknown) => {
-        serverSync.set("config", "disabled_providers", before)
+        serverSync().set("config", "disabled_providers", before)
         const message = err instanceof Error ? err.message : String(err)
         showToast({ title: language.t("common.requestFailed"), description: message })
       })
@@ -105,14 +114,16 @@ export const SettingsProviders: Component = () => {
 
   const disconnect = async (providerID: string, name: string) => {
     if (isConfigCustom(providerID)) {
-      await serverSDK.client.auth.remove({ providerID }).catch(() => undefined)
+      await serverSDK()
+        .client.auth.remove({ providerID })
+        .catch(() => undefined)
       await disableProvider(providerID, name)
       return
     }
-    await serverSDK.client.auth
-      .remove({ providerID })
+    await serverSDK()
+      .client.auth.remove({ providerID })
       .then(async () => {
-        await serverSDK.client.global.dispose()
+        await serverSDK().client.global.dispose()
         showToast({
           variant: "success",
           icon: "circle-check",
@@ -129,8 +140,9 @@ export const SettingsProviders: Component = () => {
   return (
     <div class="flex flex-col h-full overflow-y-auto no-scrollbar px-4 pb-10 sm:px-10 sm:pb-10">
       <div class="sticky top-0 z-10 bg-[linear-gradient(to_bottom,var(--surface-stronger-non-alpha)_calc(100%_-_24px),transparent)]">
-        <div class="flex flex-col gap-1 pt-6 pb-8 max-w-[720px]">
+        <div class="flex items-center justify-between gap-4 pt-6 pb-8 max-w-[720px]">
           <h2 class="text-16-medium text-text-strong">{language.t("settings.providers.title")}</h2>
+          <SettingsServerPicker />
         </div>
       </div>
 

packages/app/src/components/settings-server-picker.tsx

@@ -0,0 +1,106 @@
+import { Button } from "@opencode-ai/ui/button"
+import { DropdownMenu } from "@opencode-ai/ui/dropdown-menu"
+import { Icon } from "@opencode-ai/ui/icon"
+import { QueryClientProvider } from "@tanstack/solid-query"
+import { createMemo, For, type ParentProps, Show } from "solid-js"
+import { ServerHealthIndicator, ServerRow } from "@/components/server/server-row"
+import { ModelsProvider } from "@/context/models"
+import { ServerConnection } from "@/context/server"
+import { ServerSDKProvider } from "@/context/server-sdk"
+import { ServerSyncProvider } from "@/context/server-sync"
+import { useGlobal } from "@/context/global"
+import { useSettings } from "@/context/settings"
+
+export function SettingsServerScope(props: ParentProps) {
+  const global = useGlobal()
+  const settings = useSettings()
+
+  return (
+    <Show when={settings.general.newLayoutDesigns()} fallback={props.children}>
+      <Show when={global.settings.server.selected()}>
+        {(server) => <SettingsServerDataProviders server={server()}>{props.children}</SettingsServerDataProviders>}
+      </Show>
+    </Show>
+  )
+}
+
+function SettingsServerDataProviders(props: ParentProps<{ server: ServerConnection.Any }>) {
+  const global = useGlobal()
+  const serverCtx = () => global.createServerCtx(props.server)
+
+  return (
+    <QueryClientProvider client={serverCtx().queryClient}>
+      <ServerSDKProvider server={() => props.server}>
+        <ServerSyncProvider>
+          <ModelsProvider>{props.children}</ModelsProvider>
+        </ServerSyncProvider>
+      </ServerSDKProvider>
+    </QueryClientProvider>
+  )
+}
+
+export function SettingsServerPicker() {
+  const global = useGlobal()
+  const settings = useSettings()
+  const selected = createMemo(() =>
+    settings.general.newLayoutDesigns() ? global.settings.server.selected() : undefined,
+  )
+
+  return (
+    <Show when={selected()}>
+      {(conn) => (
+        <DropdownMenu gutter={4} placement="bottom-end">
+          <DropdownMenu.Trigger
+            as={Button}
+            variant="secondary"
+            size="large"
+            class="h-8 max-w-[260px] gap-2 px-2 py-1.5 data-[expanded]:bg-surface-base-active"
+          >
+            <ServerHealthIndicator health={global.servers.health[ServerConnection.key(conn())]} />
+            <ServerRow
+              conn={conn()}
+              status={global.servers.health[ServerConnection.key(conn())]}
+              class="flex items-center gap-2 min-w-0 flex-1"
+              nameClass="text-14-regular text-text-base truncate"
+              versionClass="hidden"
+            />
+            <Icon name="chevron-down" size="small" class="text-icon-weak shrink-0" />
+          </DropdownMenu.Trigger>
+          <DropdownMenu.Portal>
+            <DropdownMenu.Content class="w-[320px] mt-1 [&_[data-slot=dropdown-menu-radio-item]]:pl-2 [&_[data-slot=dropdown-menu-radio-item]]:pr-2">
+              <DropdownMenu.RadioGroup
+                value={global.settings.server.key}
+                onChange={(key) => {
+                  if (typeof key === "string") global.settings.server.set(ServerConnection.Key.make(key))
+                }}
+              >
+                <For each={global.servers.list()}>
+                  {(item) => {
+                    const key = ServerConnection.key(item)
+                    const blocked = () => global.servers.health[key]?.healthy === false
+                    return (
+                      <DropdownMenu.RadioItem value={key} disabled={blocked()}>
+                        <ServerHealthIndicator health={global.servers.health[key]} />
+                        <ServerRow
+                          conn={item}
+                          dimmed={blocked()}
+                          status={global.servers.health[key]}
+                          class="flex items-center gap-2 min-w-0 flex-1"
+                          nameClass="text-14-regular text-text-base truncate"
+                          versionClass="text-12-regular text-text-weak truncate"
+                        />
+                        <DropdownMenu.ItemIndicator>
+                          <Icon name="check-small" size="small" class="text-icon-weak" />
+                        </DropdownMenu.ItemIndicator>
+                      </DropdownMenu.RadioItem>
+                    )
+                  }}
+                </For>
+              </DropdownMenu.RadioGroup>
+            </DropdownMenu.Content>
+          </DropdownMenu.Portal>
+        </DropdownMenu>
+      )}
+    </Show>
+  )
+}

packages/app/src/components/settings-servers.tsx

@@ -0,0 +1,33 @@
+import { Show, type Component } from "solid-js"
+import { useLanguage } from "@/context/language"
+import { ServerConnectionForm, ServerConnectionList, useServerManagementController } from "./dialog-select-server"
+
+export const SettingsServers: Component = () => {
+  const language = useLanguage()
+  const controller = useServerManagementController()
+
+  return (
+    <div class="flex flex-col h-full overflow-y-auto no-scrollbar px-4 pb-10 sm:px-10 sm:pb-10">
+      <div class="flex flex-col flex-1 min-h-0 max-w-[720px]">
+        <Show
+          when={controller.isFormMode()}
+          fallback={
+            <>
+              <div class="sticky top-0 z-10 bg-[linear-gradient(to_bottom,var(--surface-stronger-non-alpha)_calc(100%_-_24px),transparent)]">
+                <div class="flex flex-col gap-1 pt-6 pb-8">
+                  <h2 class="text-16-medium text-text-strong">{language.t("status.popover.tab.servers")}</h2>
+                </div>
+              </div>
+              <ServerConnectionList controller={controller} />
+            </>
+          }
+        >
+          <div class="flex flex-1 min-h-0 flex-col gap-4 pt-6">
+            <div class="text-16-medium text-text-strong">{controller.formTitle()}</div>
+            <ServerConnectionForm controller={controller} />
+          </div>
+        </Show>
+      </div>
+    </div>
+  )
+}

packages/app/src/components/settings-v2/dialog-server-v2.tsx

@@ -0,0 +1,129 @@
+import { ButtonV2 } from "@opencode-ai/ui/v2/button-v2"
+import { Dialog, DialogFooter } from "@opencode-ai/ui/v2/dialog-v2"
+import { TextInputV2 } from "@opencode-ai/ui/v2/text-input-v2"
+import { useDialog } from "@opencode-ai/ui/context/dialog"
+import { type Component, Show, createEffect, createSignal, onCleanup, onMount } from "solid-js"
+import { useLanguage } from "@/context/language"
+import { type ServerConnection } from "@/context/server"
+import { useServerManagementController } from "../dialog-select-server"
+import "./settings-v2.css"
+
+export const DialogServerV2: Component<{
+  mode: "add" | "edit"
+  server?: ServerConnection.Http
+}> = (props) => {
+  const dialog = useDialog()
+  const language = useLanguage()
+  const controller = useServerManagementController({
+    onSelect: () => dialog.close(),
+    navigateOnAdd: false,
+  })
+  const [opened, setOpened] = createSignal(false)
+
+  onMount(() => {
+    if (props.mode === "add") controller.startAdd()
+    if (props.mode === "edit" && props.server) controller.startEdit(props.server)
+    setOpened(true)
+  })
+
+  onCleanup(() => {
+    controller.resetForm()
+  })
+
+  createEffect(() => {
+    if (!opened()) return
+    if (controller.isFormMode()) return
+    dialog.close()
+  })
+
+  const keyDown = (event: KeyboardEvent) => {
+    if (event.key !== "Enter" || event.isComposing) return
+    event.preventDefault()
+    controller.submitForm()
+  }
+
+  const title = () =>
+    props.mode === "add" ? language.t("dialog.server.add.title") : language.t("dialog.server.edit.title")
+
+  const submitLabel = () => {
+    if (controller.formBusy()) return language.t("dialog.server.add.checking")
+    if (props.mode === "add") return language.t("dialog.server.add.button")
+    return language.t("common.save")
+  }
+
+  return (
+    <Dialog title={title()} fit class="settings-v2-server-dialog">
+      <div class="flex w-full min-w-0 flex-1 flex-col px-4">
+        <div class="flex w-full min-w-0 flex-col gap-6">
+          <div class="flex w-full min-w-0 flex-col gap-2">
+            <label class="settings-v2-server-dialog-label">{language.t("dialog.server.add.url")}</label>
+            <TextInputV2
+              type="text"
+              appearance="large"
+              class="!w-full self-stretch"
+              value={controller.formValue()}
+              placeholder={language.t("dialog.server.add.placeholder")}
+              invalid={!!controller.formError()}
+              disabled={controller.formBusy()}
+              autofocus
+              onInput={(event) => controller.handleFormChange()(event.currentTarget.value)}
+              onKeyDown={keyDown}
+            />
+            <Show when={controller.formError()}>
+              <span class="settings-v2-server-dialog-error">{controller.formError()}</span>
+            </Show>
+          </div>
+          <div class="flex w-full min-w-0 flex-col gap-2">
+            <label class="settings-v2-server-dialog-label">{language.t("dialog.server.add.name")}</label>
+            <TextInputV2
+              type="text"
+              appearance="large"
+              class="!w-full self-stretch"
+              value={controller.formName()}
+              placeholder={language.t("dialog.server.add.namePlaceholder")}
+              disabled={controller.formBusy()}
+              onInput={(event) => controller.handleFormNameChange()(event.currentTarget.value)}
+              onKeyDown={keyDown}
+            />
+          </div>
+          <div class="grid w-full min-w-0 grid-cols-2 gap-4">
+            <div class="flex min-w-0 flex-col gap-2">
+              <label class="settings-v2-server-dialog-label">{language.t("dialog.server.add.username")}</label>
+              <TextInputV2
+                type="text"
+                appearance="large"
+                class="!w-full self-stretch"
+                value={controller.formUsername()}
+                placeholder={language.t("dialog.server.add.usernamePlaceholder")}
+                disabled={controller.formBusy()}
+                onInput={(event) => controller.handleFormUsernameChange()(event.currentTarget.value)}
+                onKeyDown={keyDown}
+              />
+            </div>
+            <div class="flex min-w-0 flex-col gap-2">
+              <label class="settings-v2-server-dialog-label">{language.t("dialog.server.add.password")}</label>
+              <TextInputV2
+                type="password"
+                appearance="large"
+                class="!w-full self-stretch"
+                value={controller.formPassword()}
+                placeholder={language.t("dialog.server.add.passwordPlaceholder")}
+                disabled={controller.formBusy()}
+                onInput={(event) => controller.handleFormPasswordChange()(event.currentTarget.value)}
+                onKeyDown={keyDown}
+              />
+            </div>
+          </div>
+        </div>
+      </div>
+      <DialogFooter>
+        <ButtonV2 variant="neutral" disabled={controller.formBusy()} onClick={() => dialog.close()}>
+          {language.t("common.cancel")}
+        </ButtonV2>
+        <ButtonV2 variant="contrast" disabled={controller.formBusy()} onClick={controller.submitForm}>
+          {submitLabel()}
+        </ButtonV2>
+      </DialogFooter>
+    </Dialog>
+  )
+}

packages/app/src/components/settings-v2/dialog-settings-v2.tsx

@@ -9,20 +9,15 @@ import { SettingsKeybinds } from "../settings-keybinds"
 import { SettingsProvidersV2 } from "./providers"
 import { SettingsModelsV2 } from "./models"
 import "./settings-v2.css"
+import { SettingsServersV2 } from "./servers"
 
 export const DialogSettings: Component = () => {
   const language = useLanguage()
   const platform = usePlatform()
 
   return (
-    <Dialog size="x-large" class="settings-v2-dialog" data-component="settings-v2-dialog">
-      <TabsV2
-        orientation="vertical"
-        variant="settings"
-        defaultValue="general"
-        class="settings-v2"
-        data-component="settings-v2"
-      >
+    <Dialog size="x-large" variant="settings" class="settings-v2-dialog">
+      <TabsV2 orientation="vertical" variant="settings" defaultValue="general" class="settings-v2">
         <TabsV2.List>
           <div class="flex flex-col justify-between h-full w-full">
             <div class="flex flex-col gap-3 w-full">
@@ -44,6 +39,10 @@ export const DialogSettings: Component = () => {
                 <div class="flex flex-col gap-1.5">
                   <TabsV2.SectionTitle>{language.t("settings.section.server")}</TabsV2.SectionTitle>
                   <div class="flex flex-col gap-1.5 w-full">
+                    <TabsV2.Trigger value="servers">
+                      <Icon name="server" />
+                      {language.t("status.popover.tab.servers")}
+                    </TabsV2.Trigger>
                     <TabsV2.Trigger value="providers">
                       <Icon name="providers" />
                       {language.t("settings.providers.title")}
@@ -68,6 +67,9 @@ export const DialogSettings: Component = () => {
         <TabsV2.Content value="shortcuts" class="settings-v2-panel">
           <SettingsKeybinds v2 />
         </TabsV2.Content>
+        <TabsV2.Content value="servers" class="settings-v2-panel">
+          <SettingsServersV2 />
+        </TabsV2.Content>
         <TabsV2.Content value="providers" class="settings-v2-panel">
           <SettingsProvidersV2 />
         </TabsV2.Content>

packages/app/src/components/settings-v2/general.tsx

@@ -1,20 +1,17 @@
 import { Component, Show, createMemo, createResource, onMount } from "solid-js"
-import { createStore } from "solid-js/store"
 import { ButtonV2 } from "@opencode-ai/ui/v2/button-v2"
-import { Icon } from "@opencode-ai/ui/icon"
 import { SelectV2 } from "@opencode-ai/ui/v2/select-v2"
 import { Switch } from "@opencode-ai/ui/v2/switch-v2"
 import { TextInputV2 } from "@opencode-ai/ui/v2/text-input-v2"
-import { Tooltip } from "@opencode-ai/ui/tooltip"
 import { useTheme, type ColorScheme } from "@opencode-ai/ui/theme/context"
 import { useDialog } from "@opencode-ai/ui/context/dialog"
-import { showToast } from "@/utils/toast"
 import { useParams } from "@solidjs/router"
 import { useLanguage } from "@/context/language"
 import { usePermission } from "@/context/permission"
-import { usePlatform, type DisplayBackend } from "@/context/platform"
+import { usePlatform } from "@/context/platform"
 import { useServerSync } from "@/context/server-sync"
 import { useServerSDK } from "@/context/server-sdk"
+import { useUpdaterAction } from "../updater-action"
 import {
   monoDefault,
   monoFontFamily,
@@ -93,11 +90,8 @@ export const SettingsGeneralV2: Component = () => {
   const params = useParams()
   const settings = useSettings()
 
-  const [store, setStore] = createStore({
-    checking: false,
-  })
+  const updater = useUpdaterAction()
 
-  const linux = createMemo(() => platform.platform === "desktop" && platform.os === "linux")
   const dir = createMemo(() => decode64(params.dir))
   const accepting = createMemo(() => {
     const value = dir()
@@ -125,78 +119,20 @@ export const SettingsGeneralV2: Component = () => {
   }
   const desktop = createMemo(() => platform.platform === "desktop")
 
-  const check = () => {
-    if (!platform.checkUpdate) return
-    setStore("checking", true)
-
-    void platform
-      .checkUpdate()
-      .then((result) => {
-        if (!result.updateAvailable) {
-          showToast({
-            variant: "success",
-            icon: "circle-check",
-            title: language.t("settings.updates.toast.latest.title"),
-            description: language.t("settings.updates.toast.latest.description", { version: platform.version ?? "" }),
-          })
-          return
-        }
-
-        const actions = platform.updateAndRestart
-          ? [
-              {
-                label: language.t("toast.update.action.installRestart"),
-                onClick: async () => {
-                  await platform.updateAndRestart!()
-                },
-              },
-              {
-                label: language.t("toast.update.action.notYet"),
-                onClick: "dismiss" as const,
-              },
-            ]
-          : [
-              {
-                label: language.t("toast.update.action.notYet"),
-                onClick: "dismiss" as const,
-              },
-            ]
-
-        showToast({
-          persistent: true,
-          icon: "download",
-          title: language.t("toast.update.title"),
-          description: language.t("toast.update.description", { version: result.version ?? "" }),
-          actions,
-        })
-      })
-      .catch((err: unknown) => {
-        const message = err instanceof Error ? err.message : String(err)
-        showToast({ title: language.t("common.requestFailed"), description: message })
-      })
-      .finally(() => setStore("checking", false))
-  }
-
   const themeOptions = createMemo<ThemeOption[]>(() => theme.ids().map((id) => ({ id, name: theme.name(id) })))
 
-  const globalSync = useServerSync()
-  const globalSdk = useServerSDK()
+  const serverSync = useServerSync()
+  const serverSdk = useServerSDK()
 
   const [shells] = createResource(
     () =>
-      globalSdk.client.pty
-        .shells()
+      serverSdk()
+        .client.pty.shells()
         .then((res) => res.data ?? [])
         .catch(() => [] as ShellOption[]),
     { initialValue: [] as ShellOption[] },
   )
 
-  const [displayBackend, { refetch: refetchDisplayBackend }] = createResource(
-    () => (linux() && platform.getDisplayBackend ? true : false),
-    () => Promise.resolve(platform.getDisplayBackend?.() ?? null).catch(() => null as DisplayBackend | null),
-    { initialValue: null as DisplayBackend | null },
-  )
-
   const [pinchZoom, { mutate: setPinchZoom }] = createResource(
     () => (desktop() && platform.getPinchZoomEnabled ? true : false),
     () => Promise.resolve(platform.getPinchZoomEnabled?.() ?? false).catch(() => false),
@@ -208,11 +144,11 @@ export const SettingsGeneralV2: Component = () => {
   })
 
   const autoOption = { id: "auto", value: "", label: language.t("settings.general.row.shell.autoDefault") }
-  const currentShell = createMemo(() => globalSync.data.config.shell ?? "")
+  const currentShell = createMemo(() => serverSync().data.config.shell ?? "")
 
   const shellOptions = createMemo<ShellSelectOption[]>(() => {
     const list = shells.latest
-    const current = globalSync.data.config.shell
+    const current = serverSync().data.config.shell
 
     const nameCounts = new Map<string, number>()
     for (const s of list) {
@@ -241,14 +177,6 @@ export const SettingsGeneralV2: Component = () => {
     return options
   })
 
-  const onDisplayBackendChange = (checked: boolean) => {
-    const update = platform.setDisplayBackend?.(checked ? "wayland" : "auto")
-    if (!update) return
-    void update.finally(() => {
-      void refetchDisplayBackend()
-    })
-  }
-
   const onPinchZoomChange = (checked: boolean) => {
     setPinchZoom(checked)
     const update = platform.setPinchZoomEnabled?.(checked)
@@ -347,7 +275,7 @@ export const SettingsGeneralV2: Component = () => {
             onSelect={(option) => {
               if (!option) return
               if (option.value === currentShell()) return
-              globalSync.updateConfig({ shell: option.value })
+              serverSync().updateConfig({ shell: option.value })
             }}
           />
         </SettingsRowV2>
@@ -438,18 +366,6 @@ export const SettingsGeneralV2: Component = () => {
           </div>
         </SettingsRowV2>
 
-        <SettingsRowV2
-          title={language.t("settings.general.row.showNavigation.title")}
-          description={language.t("settings.general.row.showNavigation.description")}
-        >
-          <div data-action="settings-show-navigation">
-            <Switch
-              checked={settings.general.showNavigation()}
-              onChange={(checked) => settings.general.setShowNavigation(checked)}
-            />
-          </div>
-        </SettingsRowV2>
-
         <SettingsRowV2
           title={language.t("settings.general.row.showSearch.title")}
           description={language.t("settings.general.row.showSearch.description")}
@@ -462,18 +378,6 @@ export const SettingsGeneralV2: Component = () => {
           </div>
         </SettingsRowV2>
 
-        <SettingsRowV2
-          title={language.t("settings.general.row.showTerminal.title")}
-          description={language.t("settings.general.row.showTerminal.description")}
-        >
-          <div data-action="settings-show-terminal">
-            <Switch
-              checked={settings.general.showTerminal()}
-              onChange={(checked) => settings.general.setShowTerminal(checked)}
-            />
-          </div>
-        </SettingsRowV2>
-
         <SettingsRowV2
           title={language.t("settings.general.row.showStatus.title")}
           description={language.t("settings.general.row.showStatus.description")}
@@ -740,19 +644,6 @@ export const SettingsGeneralV2: Component = () => {
       <h3 class="settings-v2-section-title">{language.t("settings.general.section.updates")}</h3>
 
       <SettingsListV2>
-        <SettingsRowV2
-          title={language.t("settings.updates.row.startup.title")}
-          description={language.t("settings.updates.row.startup.description")}
-        >
-          <div data-action="settings-updates-startup">
-            <Switch
-              checked={settings.updates.startup()}
-              disabled={!platform.checkUpdate}
-              onChange={(checked) => settings.updates.setStartup(checked)}
-            />
-          </div>
-        </SettingsRowV2>
-
         <SettingsRowV2
           title={language.t("settings.general.row.releaseNotes.title")}
           description={language.t("settings.general.row.releaseNotes.description")}
@@ -769,16 +660,15 @@ export const SettingsGeneralV2: Component = () => {
           title={language.t("settings.updates.row.check.title")}
           description={language.t("settings.updates.row.check.description")}
         >
-          <ButtonV2 size="normal" variant="neutral" disabled={store.checking || !platform.checkUpdate} onClick={check}>
-            {store.checking
-              ? language.t("settings.updates.action.checking")
-              : language.t("settings.updates.action.checkNow")}
+          <ButtonV2 size="normal" variant="neutral" disabled={!updater.action().run} onClick={updater.run}>
+            {language.t(updater.action().label)}
           </ButtonV2>
         </SettingsRowV2>
       </SettingsListV2>
     </div>
   )
 
+  // We can probably remove this, right?
   const DisplaySection = () => (
     <Show when={desktop()}>
       <div class="settings-v2-section">
@@ -793,26 +683,6 @@ export const SettingsGeneralV2: Component = () => {
               <Switch checked={pinchZoom.latest} onChange={onPinchZoomChange} />
             </div>
           </SettingsRowV2>
-
-          <Show when={linux()}>
-            <SettingsRowV2
-              title={
-                <div class="flex items-center gap-2">
-                  <span>{language.t("settings.general.row.wayland.title")}</span>
-                  <Tooltip value={language.t("settings.general.row.wayland.tooltip")} placement="top">
-                    <span class="text-text-weak">
-                      <Icon name="help" size="small" />
-                    </span>
-                  </Tooltip>
-                </div>
-              }
-              description={language.t("settings.general.row.wayland.description")}
-            >
-              <div data-action="settings-wayland">
-                <Switch checked={displayBackend.latest === "wayland"} onChange={onDisplayBackendChange} />
-              </div>
-            </SettingsRowV2>
-          </Show>
         </SettingsListV2>
       </div>
     </Show>
@@ -833,13 +703,13 @@ export const SettingsGeneralV2: Component = () => {
 
         <SoundsSection />
 
-        <UpdatesSection />
+        <Show when={desktop()}>
+          <UpdatesSection />
+        </Show>
 
         <DisplaySection />
 
-        <Show when={desktop()}>
-          <AdvancedSection />
-        </Show>
+        <AdvancedSection />
       </div>
     </>
   )

packages/app/src/components/settings-v2/providers.tsx

@@ -33,8 +33,8 @@ const PROVIDER_ICON_SIZE = 16
 export const SettingsProvidersV2: Component = () => {
   const dialog = useDialog()
   const language = useLanguage()
-  const globalSDK = useServerSDK()
-  const globalSync = useServerSync()
+  const serverSdk = useServerSDK()
+  const serverSync = useServerSync()
   const providers = useProviders()
 
   const connected = createMemo(() => {
@@ -77,7 +77,7 @@ export const SettingsProvidersV2: Component = () => {
   const note = (id: string) => PROVIDER_NOTES.find((item) => item.match(id))?.key
 
   const isConfigCustom = (providerID: string) => {
-    const provider = globalSync.data.config.provider?.[providerID]
+    const provider = serverSync().data.config.provider?.[providerID]
     if (!provider) return false
     if (provider.npm !== "@ai-sdk/openai-compatible") return false
     if (!provider.models || Object.keys(provider.models).length === 0) return false
@@ -85,11 +85,11 @@ export const SettingsProvidersV2: Component = () => {
   }
 
   const disableProvider = async (providerID: string, name: string) => {
-    const before = globalSync.data.config.disabled_providers ?? []
+    const before = serverSync().data.config.disabled_providers ?? []
     const next = before.includes(providerID) ? before : [...before, providerID]
-    globalSync.set("config", "disabled_providers", next)
+    serverSync().set("config", "disabled_providers", next)
 
-    await globalSync
+    await serverSync()
       .updateConfig({ disabled_providers: next })
       .then(() => {
         showToast({
@@ -100,7 +100,7 @@ export const SettingsProvidersV2: Component = () => {
         })
       })
       .catch((err: unknown) => {
-        globalSync.set("config", "disabled_providers", before)
+        serverSync().set("config", "disabled_providers", before)
         const message = err instanceof Error ? err.message : String(err)
         showToast({ title: language.t("common.requestFailed"), description: message })
       })
@@ -108,14 +108,16 @@ export const SettingsProvidersV2: Component = () => {
 
   const disconnect = async (providerID: string, name: string) => {
     if (isConfigCustom(providerID)) {
-      await globalSDK.client.auth.remove({ providerID }).catch(() => undefined)
+      await serverSdk()
+        .client.auth.remove({ providerID })
+        .catch(() => undefined)
       await disableProvider(providerID, name)
       return
     }
-    await globalSDK.client.auth
-      .remove({ providerID })
+    await serverSdk()
+      .client.auth.remove({ providerID })
       .then(async () => {
-        await globalSDK.client.global.dispose()
+        await serverSdk().client.global.dispose()
         showToast({
           variant: "success",
           icon: "circle-check",

packages/app/src/components/settings-v2/servers.tsx

@@ -0,0 +1,143 @@
+import { ButtonV2 } from "@opencode-ai/ui/v2/button-v2"
+import { Tag } from "@opencode-ai/ui/v2/badge-v2"
+import { Icon as IconV2 } from "@opencode-ai/ui/v2/icon"
+import { IconButtonV2 } from "@opencode-ai/ui/v2/icon-button-v2"
+import { TextInputV2 } from "@opencode-ai/ui/v2/text-input-v2"
+import { useDialog } from "@opencode-ai/ui/context/dialog"
+import fuzzysort from "fuzzysort"
+import { type Component, For, Show, createMemo } from "solid-js"
+import { createStore } from "solid-js/store"
+import { ServerRowMenu } from "@/components/server/server-row-menu"
+import { ServerHealthIndicator } from "@/components/server/server-row"
+import { useLanguage } from "@/context/language"
+import { ServerConnection, serverName } from "@/context/server"
+import { useServerManagementController } from "../dialog-select-server"
+import { DialogServerV2 } from "./dialog-server-v2"
+import { SettingsListV2 } from "./parts/list"
+import { isWslServer, useFilteredWslServers, WslAddServerButton, WslServerSettings } from "@/wsl/settings"
+import "./settings-v2.css"
+
+export const SettingsServersV2: Component = () => {
+  const dialog = useDialog()
+  const language = useLanguage()
+  const controller = useServerManagementController()
+  const [store, setStore] = createStore({ filter: "" })
+  const wslServers = useFilteredWslServers(() => store.filter)
+
+  const showSearch = createMemo(
+    () => controller.sortedItems().filter((item) => !isWslServer(item)).length + wslServers().length > 1,
+  )
+
+  const filtered = createMemo(() => {
+    const items = controller.sortedItems().filter((item) => !isWslServer(item))
+    const query = store.filter.trim()
+    if (!query) return items
+    return fuzzysort
+      .go(query, items, {
+        keys: [(item) => serverName(item), (item) => item.http.url],
+      })
+      .map((result) => result.obj)
+  })
+
+  const openAdd = () => {
+    dialog.push(() => <DialogServerV2 mode="add" />)
+  }
+
+  const openEdit = (server: ServerConnection.Http) => {
+    dialog.push(() => <DialogServerV2 mode="edit" server={server} />)
+  }
+
+  return (
+    <>
+      <div
+        class="settings-v2-tab-header settings-v2-servers-header"
+        classList={{ "settings-v2-tab-header--stacked": showSearch() }}
+      >
+        <div class="settings-v2-tab-header-row">
+          <h2 class="settings-v2-tab-title">{language.t("status.popover.tab.servers")}</h2>
+          <ButtonV2 variant="ghost-muted" icon="plus" onClick={openAdd}>
+            {language.t("dialog.server.add.button")}
+          </ButtonV2>
+          <WslAddServerButton />
+        </div>
+        <Show when={showSearch()}>
+          <div class="settings-v2-tab-search">
+            <TextInputV2
+              type="search"
+              appearance="base"
+              value={store.filter}
+              onInput={(event) => setStore("filter", event.currentTarget.value)}
+              placeholder={language.t("dialog.server.search.placeholder")}
+              spellcheck={false}
+              autocorrect="off"
+              autocomplete="off"
+              autocapitalize="off"
+              aria-label={language.t("dialog.server.search.placeholder")}
+            />
+            <Show when={store.filter}>
+              <IconButtonV2
+                type="button"
+                variant="ghost-muted"
+                size="small"
+                class="settings-v2-tab-search-clear"
+                icon={<IconV2 name="close" size="large" class="text-v2-icon-icon-muted" />}
+                onClick={() => setStore("filter", "")}
+              />
+            </Show>
+          </div>
+        </Show>
+      </div>
+
+      <div class="settings-v2-tab-body settings-v2-servers">
+        <Show
+          when={filtered().length > 0 || wslServers().length > 0}
+          fallback={
+            <div class="settings-v2-servers-status">
+              <span>{store.filter ? language.t("palette.empty") : language.t("dialog.server.empty")}</span>
+              <Show when={store.filter}>
+                <span class="settings-v2-servers-status-filter">&quot;{store.filter}&quot;</span>
+              </Show>
+            </div>
+          }
+        >
+          <SettingsListV2>
+            <WslServerSettings controller={controller} servers={wslServers} />
+            <For each={filtered()}>
+              {(item) => {
+                const key = ServerConnection.key(item)
+                const health = () => controller.status()[key]
+                const isDefault = () => controller.defaultKey() === key
+                return (
+                  <div class="settings-v2-servers-row">
+                    <div class="settings-v2-servers-lead">
+                      <ServerHealthIndicator health={health()} />
+                      <div class="settings-v2-servers-copy">
+                        <span class="settings-v2-servers-name">{serverName(item)}</span>
+                        <span class="settings-v2-servers-meta">
+                          <Show when={health()?.version}>v{health()?.version}</Show>
+                          <Show when={health()?.version && item.type === "http"}> • </Show>
+                          <Show
+                            when={item.type === "http" && item.http.username}
+                            fallback={<Show when={item.type === "http"}>{language.t("server.row.noUsername")}</Show>}
+                          >
+                            {item.http.username}
+                          </Show>
+                        </span>
+                      </div>
+                    </div>
+                    <div class="settings-v2-servers-actions">
+                      <Show when={controller.canDefault() && isDefault()}>
+                        <Tag>{language.t("dialog.server.status.default")}</Tag>
+                      </Show>
+                      <ServerRowMenu server={item} controller={controller} onEdit={openEdit} />
+                    </div>
+                  </div>
+                )
+              }}
+            </For>
+          </SettingsListV2>
+        </Show>
+      </div>
+    </>
+  )
+}

packages/app/src/components/settings-v2/settings-v2.css

@@ -1,11 +1,15 @@
 @import "@opencode-ai/ui/v2/text-input-v2.css";
 @import "@opencode-ai/ui/v2/button-v2.css";
 
-[data-component="settings-v2"] {
+[data-component="tabs-v2"][data-variant="settings"] {
   height: 100%;
 }
 
-[data-component="settings-v2-dialog"] [data-slot="dialog-body"] {
+[data-component="dialog-v2"][data-variant="settings"] [data-slot="dialog-container"] {
+  background: var(--v2-background-bg-base);
+}
+
+[data-component="dialog-v2"][data-variant="settings"] [data-slot="dialog-body"] {
   padding: 0;
   overflow: hidden;
 }
@@ -81,10 +85,6 @@
   box-shadow: inset 0 0 0 0.5px var(--v2-border-border-muted);
 }
 
-[data-slot="dialog-container"]:has(.settings-v2-dialog) {
-  box-shadow: var(--v2-elevation-overlay);
-}
-
 [data-component="settings-v2-row"] {
   display: flex;
   flex-wrap: wrap;
@@ -153,12 +153,12 @@
   width: 100%;
 }
 
-[data-component="settings-v2-dialog"] [data-component="select-v2-root"] {
+[data-component="dialog-v2"][data-variant="settings"] [data-component="select-v2-root"] {
   width: fit-content;
   max-width: 100%;
 }
 
-[data-component="settings-v2-dialog"] [data-component="button-v2"] {
+[data-component="dialog-v2"][data-variant="settings"] [data-component="button-v2"] {
   width: fit-content;
   max-width: 100%;
 }
@@ -511,3 +511,144 @@
 .settings-v2-shortcuts-status-filter {
   color: var(--v2-text-text-base);
 }
+
+.settings-v2-tab-body.settings-v2-servers {
+  gap: 0;
+}
+
+.settings-v2-tab-header.settings-v2-servers-header {
+  padding-bottom: 24px;
+}
+
+.settings-v2-servers-header .settings-v2-tab-header-row {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 16px;
+}
+
+.settings-v2-tab-header.settings-v2-servers-header.settings-v2-tab-header--stacked {
+  gap: 24px;
+  padding-bottom: 24px;
+}
+
+.settings-v2-servers [data-component="settings-v2-list"] {
+  display: flex;
+  flex-direction: column;
+  gap: 0;
+  padding: 20px;
+  border-radius: 6px;
+}
+
+.settings-v2-servers-row {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 16px;
+}
+
+.settings-v2-servers-row:not(:last-child) {
+  padding-bottom: 16px;
+  margin-bottom: 16px;
+  border-bottom: 0.5px solid var(--v2-border-border-base);
+}
+
+.settings-v2-servers-actions {
+  display: flex;
+  flex-shrink: 0;
+  align-items: center;
+  justify-content: flex-end;
+  gap: 8px;
+}
+
+.settings-v2-servers-lead {
+  display: flex;
+  min-width: 0;
+  flex: 1;
+  align-items: flex-start;
+  gap: 10px;
+}
+
+.settings-v2-servers-copy {
+  display: flex;
+  min-width: 0;
+  flex: 1;
+  flex-direction: column;
+  gap: 6px;
+}
+
+.settings-v2-servers-name {
+  font-size: 13px;
+  font-weight: 530;
+  line-height: 1;
+  color: var(--v2-text-text-base);
+}
+
+.settings-v2-servers-meta {
+  font-size: 11px;
+  font-weight: 440;
+  line-height: 1;
+  color: var(--v2-text-text-muted);
+}
+
+.settings-v2-servers-status {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  gap: 4px;
+  padding-block: 48px;
+  font-size: 13px;
+  font-weight: 440;
+  line-height: 1;
+  color: var(--v2-text-text-muted);
+  text-align: center;
+}
+
+.settings-v2-servers-status-filter {
+  color: var(--v2-text-text-base);
+}
+
+[data-component="dialog-v2"].settings-v2-server-dialog [data-slot="dialog-container"] {
+  width: 480px;
+  max-width: calc(100vw - 32px);
+  height: auto;
+  border-radius: 8px;
+  align-items: stretch;
+}
+
+[data-component="dialog-v2"].settings-v2-server-dialog [data-slot="dialog-content"] {
+  align-items: stretch;
+  width: 100%;
+}
+
+[data-component="dialog-v2"].settings-v2-server-dialog [data-slot="dialog-header"] {
+  align-items: center;
+  padding: 24px 24px 0;
+}
+
+[data-component="dialog-v2"].settings-v2-server-dialog [data-slot="dialog-body"] {
+  display: flex;
+  width: 100%;
+  min-width: 0;
+  flex-direction: column;
+  align-items: stretch;
+}
+
+[data-component="dialog-v2"].settings-v2-server-dialog [data-slot="dialog-footer"] {
+  padding: 24px;
+}
+
+.settings-v2-server-dialog-label {
+  font-size: 13px;
+  font-weight: 530;
+  line-height: 1;
+  color: var(--v2-text-text-base);
+}
+
+.settings-v2-server-dialog-error {
+  font-size: 11px;
+  font-weight: 440;
+  line-height: 1;
+  color: var(--v2-state-fg-danger);
+}

packages/app/src/components/status-popover-body.tsx

@@ -3,7 +3,6 @@ import { useDialog } from "@opencode-ai/ui/context/dialog"
 import { Icon } from "@opencode-ai/ui/icon"
 import { Switch } from "@opencode-ai/ui/switch"
 import { Tabs } from "@opencode-ai/ui/tabs"
-import { useMutation, useQueryClient } from "@tanstack/solid-query"
 import { showToast } from "@/utils/toast"
 import { useNavigate } from "@solidjs/router"
 import { type Accessor, createEffect, createMemo, For, type JSXElement, onCleanup, Show } from "solid-js"
@@ -11,15 +10,12 @@ import { createStore } from "solid-js/store"
 import { ServerHealthIndicator, ServerRow } from "@/components/server/server-row"
 import { useLanguage } from "@/context/language"
 import { usePlatform } from "@/context/platform"
-import { useSDK } from "@/context/sdk"
-import { normalizeServerUrl, ServerConnection, useServer } from "@/context/server"
+import { ServerConnection, useServer } from "@/context/server"
 import { useSync } from "@/context/sync"
 import { type ServerHealth } from "@/utils/server-health"
-import { useQueryOptions } from "@/context/server-sync"
-import { pathKey } from "@/utils/path-key"
-import { useServers } from "@/context/servers"
-
-const pollMs = 10_000
+import { useGlobal } from "@/context/global"
+import { useSettings } from "@/context/settings"
+import { useMcpToggle } from "@/context/mcp"
 
 const pluginEmptyMessage = (value: string, file: string): JSXElement => {
   const parts = value.split(file)
@@ -59,7 +55,7 @@ const useDefaultServerKey = (
   get: (() => string | Promise<string | null | undefined> | null | undefined) | undefined,
 ) => {
   const [state, setState] = createStore({
-    url: undefined as string | undefined,
+    key: undefined as ServerConnection.Key | undefined,
     tick: 0,
   })
 
@@ -68,7 +64,7 @@ const useDefaultServerKey = (
     let dead = false
     const result = get?.()
     if (!result) {
-      setState("url", undefined)
+      setState("key", undefined)
       onCleanup(() => {
         dead = true
       })
@@ -78,7 +74,7 @@ const useDefaultServerKey = (
     if (result instanceof Promise) {
       void result.then((next) => {
         if (dead) return
-        setState("url", next ? normalizeServerUrl(next) : undefined)
+        setState("key", next ?? undefined)
       })
       onCleanup(() => {
         dead = true
@@ -86,7 +82,7 @@ const useDefaultServerKey = (
       return
     }
 
-    setState("url", normalizeServerUrl(result))
+    setState("key", ServerConnection.Key.make(result))
     onCleanup(() => {
       dead = true
     })
@@ -94,45 +90,12 @@ const useDefaultServerKey = (
 
   return {
     key: () => {
-      const u = state.url
-      if (!u) return
-      return ServerConnection.key({ type: "http", http: { url: u } })
+      return state.key
     },
     refresh: () => setState("tick", (value) => value + 1),
   }
 }
 
-const useMcpToggleMutation = () => {
-  const sync = useSync()
-  const sdk = useSDK()
-  const language = useLanguage()
-  const queryClient = useQueryClient()
-  const queryOptions = useQueryOptions()
-
-  return useMutation(() => ({
-    mutationFn: async (name: string) => {
-      const status = sync.data.mcp[name]
-      if (status?.status === "connected") {
-        await sdk.client.mcp.disconnect({ name })
-        return
-      }
-      if (status?.status === "needs_auth") {
-        await sdk.client.mcp.auth.authenticate({ name })
-        return
-      }
-      await sdk.client.mcp.connect({ name })
-    },
-    onSuccess: () => queryClient.refetchQueries(queryOptions.mcp(pathKey(sync.directory))),
-    onError: (err) => {
-      showToast({
-        variant: "error",
-        title: language.t("common.requestFailed"),
-        description: err instanceof Error ? err.message : String(err),
-      })
-    },
-  }))
-}
-
 type ServerStatusState = {
   servers: () => ServerStatusItem[]
   defaultKey: () => ServerConnection.Key | undefined
@@ -153,13 +116,12 @@ type ServerStatusItem = {
 }
 
 export function StatusPopoverServerBody() {
-  const servers = useServers()
+  const global = useGlobal()
   const server = useServer()
   const platform = usePlatform()
   const dialog = useDialog()
   const language = useLanguage()
   const navigate = useNavigate()
-
   let dialogRun = 0
   let dialogDead = false
   onCleanup(() => {
@@ -167,7 +129,7 @@ export function StatusPopoverServerBody() {
     dialogRun += 1
   })
 
-  const sortedServers = createMemo(() => listServersByHealth(servers.list(), server.key, servers.health))
+  const sortedServers = createMemo(() => listServersByHealth(global.servers.list(), server.key, global.servers.health))
   const defaultServer = useDefaultServerKey(platform.getDefaultServer)
   const serverItems = createMemo(() =>
     sortedServers().map((conn) => {
@@ -175,8 +137,8 @@ export function StatusPopoverServerBody() {
       return {
         key,
         conn,
-        health: servers.health[key],
-        blocked: servers.health[key]?.healthy === false,
+        health: global.servers.health[key],
+        blocked: global.servers.health[key]?.healthy === false,
         active: !!server.current && key === ServerConnection.key(server.current),
         onSelect: () => {
           navigate("/")
@@ -288,12 +250,13 @@ function ServerStatusList(props: { state: ServerStatusState }) {
 
 export function StatusPopoverBody(props: { shown: Accessor<boolean> }) {
   const sync = useSync()
-  const servers = useServers()
+  const global = useGlobal()
   const server = useServer()
   const platform = usePlatform()
   const dialog = useDialog()
   const language = useLanguage()
   const navigate = useNavigate()
+  const settings = useSettings()
 
   const fail = (err: unknown) => {
     showToast({
@@ -313,16 +276,16 @@ export function StatusPopoverBody(props: { shown: Accessor<boolean> }) {
     dialogDead = true
     dialogRun += 1
   })
-  const sortedServers = createMemo(() => listServersByHealth(servers.list(), server.key, servers.health))
-  const toggleMcp = useMcpToggleMutation()
+  const sortedServers = createMemo(() => listServersByHealth(global.servers.list(), server.key, global.servers.health))
+  const toggleMcp = useMcpToggle()
   const defaultServer = useDefaultServerKey(platform.getDefaultServer)
-  const mcpNames = createMemo(() => Object.keys(sync.data.mcp ?? {}).sort((a, b) => a.localeCompare(b)))
-  const mcpStatus = (name: string) => sync.data.mcp?.[name]?.status
+  const mcpNames = createMemo(() => Object.keys(sync().data.mcp ?? {}).sort((a, b) => a.localeCompare(b)))
+  const mcpStatus = (name: string) => sync().data.mcp?.[name]?.status
   const mcpConnected = createMemo(() => mcpNames().filter((name) => mcpStatus(name) === "connected").length)
-  const lspItems = createMemo(() => sync.data.lsp ?? [])
+  const lspItems = createMemo(() => sync().data.lsp ?? [])
   const lspCount = createMemo(() => lspItems().length)
   const plugins = createMemo(() =>
-    (sync.data.config.plugin ?? []).map((item) => (typeof item === "string" ? item : item[0])),
+    (sync().data.config.plugin ?? []).map((item) => (typeof item === "string" ? item : item[0])),
   )
   const pluginCount = createMemo(() => plugins().length)
   const pluginEmpty = createMemo(() => pluginEmptyMessage(language.t("dialog.plugins.empty"), "opencode.json"))
@@ -333,15 +296,17 @@ export function StatusPopoverBody(props: { shown: Accessor<boolean> }) {
         aria-label={language.t("status.popover.ariaLabel")}
         class="tabs bg-background-strong rounded-xl overflow-hidden"
         data-component="tabs"
-        data-active="servers"
-        defaultValue="servers"
+        data-active={settings.general.newLayoutDesigns() ? "mcp" : "servers"}
+        defaultValue={settings.general.newLayoutDesigns() ? "mcp" : "servers"}
         variant="alt"
       >
         <Tabs.List data-slot="tablist" class="bg-transparent border-b-0 px-4 pt-2 pb-0 gap-4 h-10">
-          <Tabs.Trigger value="servers" data-slot="tab" class="text-12-regular">
-            {servers.list().length > 0 ? `${servers.list().length} ` : ""}
-            {language.t("status.popover.tab.servers")}
-          </Tabs.Trigger>
+          {!settings.general.newLayoutDesigns() && (
+            <Tabs.Trigger value="servers" data-slot="tab" class="text-12-regular">
+              {global.servers.list().length > 0 ? `${global.servers.list().length} ` : ""}
+              {language.t("status.popover.tab.servers")}
+            </Tabs.Trigger>
+          )}
           <Tabs.Trigger value="mcp" data-slot="tab" class="text-12-regular">
             {mcpConnected() > 0 ? `${mcpConnected()} ` : ""}
             {language.t("status.popover.tab.mcp")}
@@ -356,70 +321,72 @@ export function StatusPopoverBody(props: { shown: Accessor<boolean> }) {
           </Tabs.Trigger>
         </Tabs.List>
 
-        <Tabs.Content value="servers">
-          <div class="flex flex-col px-2 pb-2">
-            <div class="flex flex-col p-3 bg-background-base rounded-sm min-h-14">
-              <For each={sortedServers()}>
-                {(s) => {
-                  const key = ServerConnection.key(s)
-                  const blocked = () => servers.health[key]?.healthy === false
-                  return (
-                    <button
-                      type="button"
-                      class="flex items-center gap-2 w-full h-8 pl-3 pr-1.5 py-1.5 rounded-md transition-colors text-left"
-                      classList={{
-                        "hover:bg-surface-raised-base-hover": !blocked(),
-                        "cursor-not-allowed": blocked(),
-                      }}
-                      aria-disabled={blocked()}
-                      onClick={() => {
-                        if (blocked()) return
-                        navigate("/")
-                        queueMicrotask(() => server.setActive(key))
-                      }}
-                    >
-                      <ServerHealthIndicator health={servers.health[key]} />
-                      <ServerRow
-                        conn={s}
-                        dimmed={blocked()}
-                        status={servers.health[key]}
-                        class="flex items-center gap-2 w-full min-w-0"
-                        nameClass="text-14-regular text-text-base truncate"
-                        versionClass="text-12-regular text-text-weak truncate"
-                        badge={
-                          <Show when={key === defaultServer.key()}>
-                            <span class="text-11-regular text-text-base bg-surface-base px-1.5 py-0.5 rounded-md">
-                              {language.t("common.default")}
-                            </span>
-                          </Show>
-                        }
+        {!settings.general.newLayoutDesigns() && (
+          <Tabs.Content value="servers">
+            <div class="flex flex-col px-2 pb-2">
+              <div class="flex flex-col p-3 bg-background-base rounded-sm min-h-14">
+                <For each={sortedServers()}>
+                  {(s) => {
+                    const key = ServerConnection.key(s)
+                    const blocked = () => global.servers.health[key]?.healthy === false
+                    return (
+                      <button
+                        type="button"
+                        class="flex items-center gap-2 w-full h-8 pl-3 pr-1.5 py-1.5 rounded-md transition-colors text-left"
+                        classList={{
+                          "hover:bg-surface-raised-base-hover": !blocked(),
+                          "cursor-not-allowed": blocked(),
+                        }}
+                        aria-disabled={blocked()}
+                        onClick={() => {
+                          if (blocked()) return
+                          navigate("/")
+                          queueMicrotask(() => server.setActive(key))
+                        }}
                       >
-                        <div class="flex-1" />
-                        <Show when={server.current && key === ServerConnection.key(server.current)}>
-                          <Icon name="check" size="small" class="text-icon-weak shrink-0" />
-                        </Show>
-                      </ServerRow>
-                    </button>
-                  )
-                }}
-              </For>
+                        <ServerHealthIndicator health={global.servers.health[key]} />
+                        <ServerRow
+                          conn={s}
+                          dimmed={blocked()}
+                          status={global.servers.health[key]}
+                          class="flex items-center gap-2 w-full min-w-0"
+                          nameClass="text-14-regular text-text-base truncate"
+                          versionClass="text-12-regular text-text-weak truncate"
+                          badge={
+                            <Show when={key === defaultServer.key()}>
+                              <span class="text-11-regular text-text-base bg-surface-base px-1.5 py-0.5 rounded-md">
+                                {language.t("common.default")}
+                              </span>
+                            </Show>
+                          }
+                        >
+                          <div class="flex-1" />
+                          <Show when={server.current && key === ServerConnection.key(server.current)}>
+                            <Icon name="check" size="small" class="text-icon-weak shrink-0" />
+                          </Show>
+                        </ServerRow>
+                      </button>
+                    )
+                  }}
+                </For>
 
-              <Button
-                variant="secondary"
-                class="mt-3 self-start h-8 px-3 py-1.5"
-                onClick={() => {
-                  const run = ++dialogRun
-                  void import("./dialog-select-server").then((x) => {
-                    if (dialogDead || dialogRun !== run) return
-                    dialog.show(() => <x.DialogSelectServer />, defaultServer.refresh)
-                  })
-                }}
-              >
-                {language.t("status.popover.action.manageServers")}
-              </Button>
+                <Button
+                  variant="secondary"
+                  class="mt-3 self-start h-8 px-3 py-1.5"
+                  onClick={() => {
+                    const run = ++dialogRun
+                    void import("./dialog-select-server").then((x) => {
+                      if (dialogDead || dialogRun !== run) return
+                      dialog.show(() => <x.DialogSelectServer />, defaultServer.refresh)
+                    })
+                  }}
+                >
+                  {language.t("status.popover.action.manageServers")}
+                </Button>
+              </div>
             </div>
-          </div>
-        </Tabs.Content>
+          </Tabs.Content>
+        )}
 
         <Tabs.Content value="mcp">
           <div class="flex flex-col px-2 pb-2">