refactor(core): remove legacy shell selectors

Co-authored-by: Brendonovich <14191578+Brendonovich@users.noreply.github.com>

.changeset/device-authorization-url.md

@@ -0,0 +1,5 @@
+---
+"@opencode-ai/core": patch
+---
+
+Fix OpenCode Console device authorization URLs when the server returns an origin-rooted verification path.

.changeset/nested-instruction-reinjection.md

@@ -0,0 +1,5 @@
+---
+"@opencode-ai/core": patch
+---
+
+Nested AGENTS.md instructions are re-injected after compaction. Previously the in-memory dedup claim outlived the synthetic message that compaction dropped from model-visible history, so nested instructions were silently lost for the rest of the process lifetime. The claim now only guards in-flight loads; the synthetic message metadata in durable history is the sole lasting ledger, so any history truncation (compaction, revert) self-heals on the next read in that subtree.

.github/workflows/deploy-www.yml

@@ -27,7 +27,6 @@ jobs:
         working-directory: packages/www
         run: bun run build
         env:
-          BLUME_ENV: ${{ github.ref_name == 'v2' && 'production' || 'dev' }}
           CLOUDFLARE_ENV: ${{ github.ref_name == 'v2' && 'production' || 'dev' }}
 
       - name: Deploy

.github/workflows/publish.yml

@@ -91,7 +91,7 @@ jobs:
 
       - uses: ./.github/actions/setup-bun
         with:
-          bun-version: canary # Bun 1.4 until its stable release is published
+          bun-version: 1.4.0
 
       - name: Setup git committer
         id: committer
@@ -113,7 +113,7 @@ jobs:
         id: build
         run: ./packages/cli/script/build.ts ${{ (github.ref_name == 'beta' && '--sourcemaps') || '' }}
         env:
-          BUN_COMPILE_RELEASE: canary
+          BUN_COMPILE_RELEASE: bun-v1.4.0
           OPENCODE_VERSION: ${{ needs.version.outputs.version }}
           OPENCODE_RELEASE: ${{ needs.version.outputs.release }}
           GH_REPO: ${{ needs.version.outputs.repo }}
@@ -195,9 +195,33 @@ jobs:
           path: packages/cli/dist/cli-*
           if-no-files-found: error
 
-  build-node-cli:
+  build-node-app-archive:
     needs: version
-    if: github.repository == 'anomalyco/opencode' && false # Temporarily disabled
+    runs-on: blacksmith-4vcpu-ubuntu-2404
+    timeout-minutes: 30
+    if: github.repository == 'anomalyco/opencode'
+    steps:
+      - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+
+      - uses: ./.github/actions/setup-bun
+
+      - name: Build app archive
+        run: bun packages/cli/script/build-node.ts --app-archive-only --app-archive=.cache/app-archive.bin --skip-install
+        env:
+          OPENCODE_VERSION: ${{ needs.version.outputs.version }}
+          OPENCODE_RELEASE: ${{ needs.version.outputs.release }}
+
+      - uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
+        with:
+          name: opencode-node-app-archive
+          path: packages/cli/.cache/app-archive.bin
+          if-no-files-found: error
+
+  build-node-cli:
+    needs:
+      - version
+      - build-node-app-archive
+    if: github.repository == 'anomalyco/opencode'
     strategy:
       fail-fast: false
       matrix:
@@ -210,6 +234,7 @@ jobs:
             host: macos-26
           - target: windows-arm64
             host: blacksmith-4vcpu-windows-2025
+            bun_install_flags: --cpu=*
           - target: windows-x64
             host: blacksmith-4vcpu-windows-2025
     runs-on: ${{ matrix.settings.host }}
@@ -221,14 +246,19 @@ jobs:
 
       - uses: ./.github/actions/setup-bun
         with:
-          install-flags: --os=* --cpu=*
+          install-flags: ${{ matrix.settings.bun_install_flags }}
 
       - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
         with:
           node-version: "26.4.0"
 
+      - uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4.3.0
+        with:
+          name: opencode-node-app-archive
+          path: packages/cli/.cache
+
       - name: Build
-        run: bun packages/cli/script/build-node.ts --target=${{ matrix.settings.target }} --skip-install --outdir=dist/node
+        run: bun packages/cli/script/build-node.ts --target=${{ matrix.settings.target }} --skip-install --outdir=dist/node --app-archive=.cache/app-archive.bin
         env:
           OPENCODE_VERSION: ${{ needs.version.outputs.version }}
           OPENCODE_RELEASE: ${{ needs.version.outputs.release }}
@@ -543,6 +573,7 @@ jobs:
       - version
       - build-cli
       - sign-cli-macos
+      - build-node-app-archive
       - build-node-cli
       - sign-cli-windows
       - build-electron

.github/workflows/test.yml

@@ -50,6 +50,14 @@ jobs:
       - name: Setup Bun
         uses: ./.github/actions/setup-bun
 
+      - name: Test Effect simplification rules
+        if: runner.os == 'Linux'
+        run: bun run test:effect-simplification-rules
+
+      - name: Check Effect simplifications
+        if: runner.os == 'Linux'
+        run: bun run lint:effect-simplifications
+
       - name: Configure git identity
         run: |
           git config --global user.email "bot@opencode.ai"

.opencode/tui.json

@@ -1,19 +1,3 @@
 {
-  "$schema": "https://opencode.ai/tui.json",
-  "plugin": [
-    [
-      "./plugins/tui-smoke.tsx",
-      {
-        "enabled": false,
-        "label": "workspace",
-        "keybinds": {
-          "smoke_modal": "ctrl+alt+m",
-          "smoke_screen": "ctrl+alt+o",
-          "smoke_screen_home": "escape,ctrl+shift+h",
-          "smoke_screen_modal": "ctrl+alt+m",
-          "smoke_dialog_close": "escape,q"
-        }
-      }
-    ]
-  ]
+  "$schema": "https://opencode.ai/tui.json"
 }

AGENTS.md

@@ -1,5 +1,5 @@
 - After changing the public Protocol or Server `HttpApi`, run `bun run generate` from `packages/client`. Do not edit generated client files directly.
-- Keep runtime dependencies directed from Schema to Core and Protocol, then from Core and Protocol to Server. Client runtime code may depend on Schema and Protocol but never Core or Server; `sdk-next` composes Client, Core, and Server.
+- Keep runtime dependencies directed from Schema to Core and Protocol, then from Core and Protocol to Server. Client runtime code may depend on Schema and Protocol but never Core or Server; `sdk` composes Client, Core, and Server.
 - Current implementation changes belong in `packages/core`, `packages/cli`, `packages/server`, `packages/protocol`, `packages/schema`, and related generated client surfaces when required.
 - The default branch in this repo is `v2`.
 - Base all new branches and worktrees on `v2`, or `origin/v2` when the local `v2` ref is unavailable. Do not base them on `dev`.

nix/hashes.json

@@ -1,8 +1,8 @@
 {
   "nodeModules": {
-    "x86_64-linux": "sha256-PuNZrtSgh5F3KpXSM+bd+rYQuyzwWd+wCOnMJSDS2Z0=",
-    "aarch64-linux": "sha256-RYy8ZRf59FE/3+gICjvsZv3ekQvn+DTZaT9jefbK+0g=",
-    "aarch64-darwin": "sha256-1AsDK8xNj3RlzX2efbuEDEwaOLAgjFYaEvk7EkQkh4w=",
-    "x86_64-darwin": "sha256-8ONeOu9UmM0GRxVeOO3Uhk1yAOuW6R8tqBYswOVEkME="
+    "x86_64-linux": "sha256-P8AZ2THuXiET4hiSYTwGGdTgbm2l3XGZGJxQwg6lusE=",
+    "aarch64-linux": "sha256-73LxDeDPQspY4Bn/gbGU43j/k7gBZ5ywMMpUjDl3elg=",
+    "aarch64-darwin": "sha256-sc9YyTAFlbWxlFb9vwFYLs6IYd3SRoju9mQufzeQdd8=",
+    "x86_64-darwin": "sha256-nnk637DELjzGB3t9aLDYbHz5h3Dd3nvWcWGdaQk8yPM="
   }
 }

package.json

@@ -18,24 +18,25 @@
     "bench:devex": "bun run --cwd packages/app test:bench:devex",
     "lint": "oxlint",
     "lint:effect-patterns": "ast-grep scan -c script/ast-grep/sgconfig.yml packages/util/src packages/core/src packages/server/src packages/protocol/src packages/cli/src",
+    "lint:effect-simplifications": "ast-grep scan -c script/ast-grep/effect-simplifications/sgconfig.yml --off=unused-suppression packages",
     "test:lint-rules": "ast-grep test -c script/ast-grep/sgconfig.yml",
+    "test:effect-simplification-rules": "ast-grep test -c script/ast-grep/effect-simplifications/sgconfig.yml",
     "typecheck": "bun turbo typecheck --concurrency=3",
     "typecheck:profile": "bun script/profile-typecheck.ts",
     "typecheck:profile:packages": "bun script/profile-typecheck-packages.ts",
     "upgrade-opentui": "bun run script/upgrade-opentui.ts",
     "postinstall": "bun run --cwd packages/core fix-node-pty",
     "prepare": "husky",
+    "reserve-packages": "bun script/reserve-package-names.ts",
     "random": "echo 'Random script'",
     "sso": "aws sso login --sso-session=opencode --no-browser",
-    "translate:app": "bun run script/translate-app.ts",
     "test": "echo 'do not run tests from root' && exit 1"
   },
   "workspaces": {
     "packages": [
       "packages/*",
       "packages/console/*",
-      "packages/stats/*",
-      "packages/slack"
+      "packages/stats/*"
     ],
     "catalog": {
       "@effect/opentelemetry": "4.0.0-rc.110",
@@ -48,10 +49,10 @@
       "@octokit/rest": "22.0.0",
       "@hono/standard-validator": "0.2.0",
       "@hono/zod-validator": "0.4.2",
-      "@opentui/core": "0.5.6",
-      "@opentui/keymap": "0.5.6",
-      "@opentui/solid": "0.5.6",
-      "@tanstack/solid-virtual": "3.13.32",
+      "@opentui/core": "0.5.7",
+      "@opentui/keymap": "0.5.7",
+      "@opentui/solid": "0.5.7",
+      "@tanstack/solid-virtual": "3.13.37",
       "@shikijs/stream": "4.2.0",
       "@standard-schema/spec": "1.1.0",
       "ulid": "3.0.1",
@@ -128,7 +129,6 @@
     "@aws-sdk/client-s3": "3.933.0",
     "@opencode-ai/plugin": "workspace:*",
     "@opencode-ai/script": "workspace:*",
-    "@opencode-ai/sdk": "1.18.5",
     "heap-snapshot-toolkit": "1.1.3",
     "typescript": "catalog:"
   },
@@ -174,7 +174,7 @@
     "@ai-sdk/google@3.0.73": "patches/@ai-sdk%2Fgoogle@3.0.73.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@3.17.3": "patches/@tanstack%2Fvirtual-core@3.17.3.patch",
-    "@ff-labs/fff-bun@0.10.1": "patches/@ff-labs%2Ffff-bun@0.10.1.patch"
+    "@tanstack/virtual-core@3.17.8": "patches/@tanstack%2Fvirtual-core@3.17.8.patch",
+    "@ff-labs/fff-bun@0.10.5": "patches/@ff-labs%2Ffff-bun@0.10.5.patch"
   }
 }

packages/ai/script/setup-recording-env.ts

@@ -370,7 +370,7 @@ const responseError = Effect.fn("RecordingEnv.responseError")(function* (
   response: HttpClientResponse.HttpClientResponse,
 ) {
   if (response.status >= 200 && response.status < 300) return undefined
-  const body = yield* response.text.pipe(Effect.catch(() => Effect.succeed("")))
+  const body = yield* response.text.pipe(Effect.orElseSucceed(() => ""))
   return `${response.status}${body ? `: ${body.slice(0, 180)}` : ""}`
 })
 

packages/ai/src/protocols/anthropic-messages.ts

@@ -374,16 +374,18 @@ const lowerToolChoice = (toolChoice: NonNullable<LLMRequest["toolChoice"]>) =>
     tool: (name) => ({ type: "tool" as const, name }),
   })
 
+const scrubToolCallID = (id: string) => id.replace(/[^a-zA-Z0-9_-]/g, "_")
+
 const lowerToolCall = (part: ToolCallPart): AnthropicToolUseBlock => ({
   type: "tool_use",
-  id: part.id,
+  id: scrubToolCallID(part.id),
   name: part.name,
   input: part.input,
 })
 
 const lowerServerToolCall = (part: ToolCallPart): AnthropicServerToolUseBlock => ({
   type: "server_tool_use",
-  id: part.id,
+  id: scrubToolCallID(part.id),
   name: part.name,
   input: part.input,
 })
@@ -405,7 +407,7 @@ const lowerServerToolResult = Effect.fn("AnthropicMessages.lowerServerToolResult
   // Prefer the provider-owned replay payload; fall back to the result value for
   // histories constructed directly from provider events.
   const payload = part.providerMetadata?.anthropic?.["result"] ?? part.result.value
-  return { type: wireType, tool_use_id: part.id, content: payload } satisfies AnthropicServerToolResultBlock
+  return { type: wireType, tool_use_id: scrubToolCallID(part.id), content: payload } satisfies AnthropicServerToolResultBlock
 })
 
 const lowerMedia = Effect.fn("AnthropicMessages.lowerMedia")(function* (part: MediaPart) {
@@ -587,7 +589,7 @@ const lowerMessages = Effect.fn("AnthropicMessages.lowerMessages")(function* (
         return yield* ProviderShared.unsupportedContent("Anthropic Messages", "tool", ["tool-result"])
       content.push({
         type: "tool_result",
-        tool_use_id: part.id,
+        tool_use_id: scrubToolCallID(part.id),
         content: yield* lowerToolResultContent(part),
         is_error: part.result.type === "error" ? true : undefined,
         cache_control: cacheControl(breakpoints, part.cache),

packages/ai/src/protocols/gemini.ts

@@ -37,6 +37,17 @@ const requiresThoughtSignatureFallback = (modelID: string) => {
   return !/(^|\/)gemini-robotics-er-1\.5(?:[.-]|$)/i.test(modelID)
 }
 
+// Gemini 3 accepts media nested inside function responses; matched Gemini 2.5 variants reject it,
+// so their tool-result attachments lower as a separate user turn instead.
+const routesLegacyToolMedia = (modelID: string) => /gemini-2[.-]5(?:[.-]|$)/i.test(modelID)
+
+// Blacklist: Gemini 1.x/2.x ignore or reject explicit function call ids.
+// Every other model id (Gemini 3+, gemma, anything unrecognized) gets them.
+const omitsFunctionCallIds = (modelID: string) => {
+  const match = /^gemini(?:-live)?-(\d+)/i.exec(modelID)
+  return match !== null && Number(match[1]) < 3
+}
+
 export interface OptionsInput {
   readonly [key: string]: unknown
   readonly cachedContent?: string
@@ -208,11 +219,12 @@ type GeminiEvent = Schema.Schema.Type<typeof GeminiEvent>
 interface ParserState {
   readonly finishReason?: string
   readonly hasToolCalls: boolean
-  readonly nextToolCallId: number
   readonly promptFeedback?: GeminiPromptFeedback
   readonly usage?: Usage
   readonly lifecycle: Lifecycle.State
   readonly reasoningSignature?: string
+  readonly textSignature?: string
+  readonly seenCallIds?: ReadonlySet<string>
 }
 
 // =============================================================================
@@ -270,22 +282,24 @@ const thoughtSignature = (providerMetadata: ProviderMetadata | undefined) => {
     : undefined
 }
 
-const functionCallId = (providerMetadata: ProviderMetadata | undefined) => {
-  const google = providerMetadata?.google
-  return ProviderShared.isRecord(google) && typeof google.functionCallId === "string"
-    ? google.functionCallId
-    : undefined
-}
-
-const lowerToolCall = (part: ToolCallPart) => ({
-  functionCall: { id: functionCallId(part.providerMetadata), name: part.name, args: part.input },
+const lowerToolCall = (part: ToolCallPart, omitIds: boolean) => ({
+  functionCall: { ...(omitIds ? {} : { id: part.id }), name: part.name, args: part.input },
   thoughtSignature: thoughtSignature(part.providerMetadata),
 })
 
 const lowerMessages = Effect.fn("Gemini.lowerMessages")(function* (request: LLMRequest) {
   const contents: GeminiContent[] = []
+  const omitCallIds = omitsFunctionCallIds(request.model.id)
+  const legacyToolMedia = routesLegacyToolMedia(request.model.id)
+  let pendingMedia: GeminiInlineDataPart[] | undefined
+  const flushMedia = () => {
+    if (!pendingMedia) return
+    contents.push({ role: "user", parts: [{ text: "Attached media from tool result:" }, ...pendingMedia] })
+    pendingMedia = undefined
+  }
 
   for (const message of request.messages) {
+    if (message.role !== "tool") flushMedia()
     if (message.role === "system") {
       const part = yield* ProviderShared.wrappedSystemUpdate("Gemini", message)
       const previous = contents.at(-1)
@@ -316,7 +330,7 @@ const lowerMessages = Effect.fn("Gemini.lowerMessages")(function* (request: LLMR
         if (!ProviderShared.supportsContent(part, ["text", "reasoning", "tool-call"]))
           return yield* ProviderShared.unsupportedContent("Gemini", "assistant", ["text", "reasoning", "tool-call"])
         if (part.type === "text") {
-          parts.push({ text: part.text })
+          parts.push({ text: part.text, thoughtSignature: thoughtSignature(part.providerMetadata) })
           continue
         }
         if (part.type === "reasoning") {
@@ -324,7 +338,7 @@ const lowerMessages = Effect.fn("Gemini.lowerMessages")(function* (request: LLMR
           continue
         }
         if (part.type === "tool-call") {
-          const lowered = lowerToolCall(part)
+          const lowered = lowerToolCall(part, omitCallIds)
           const signature = lowered.thoughtSignature
           parts.push({
             ...lowered,
@@ -349,7 +363,7 @@ const lowerMessages = Effect.fn("Gemini.lowerMessages")(function* (request: LLMR
       if (part.result.type !== "content") {
         parts.push({
           functionResponse: {
-            id: functionCallId(part.providerMetadata),
+            ...(omitCallIds ? {} : { id: part.id }),
             name: part.name,
             response: {
               name: part.name,
@@ -367,21 +381,28 @@ const lowerMessages = Effect.fn("Gemini.lowerMessages")(function* (request: LLMR
         const value = ProviderShared.normalizeToolFile(item)
         media.push({ inlineData: { mimeType: value.mime, data: value.base64 } })
       }
+      if (legacyToolMedia && media.length > 0) (pendingMedia ??= []).push(...media)
       parts.push({
         functionResponse: {
-          id: functionCallId(part.providerMetadata),
+          ...(omitCallIds ? {} : { id: part.id }),
           name: part.name,
           response: {
             name: part.name,
             content: text.join("\n"),
           },
-          parts: media.length > 0 ? media : undefined,
+          parts: legacyToolMedia || media.length === 0 ? undefined : media,
         },
       })
     }
-    contents.push({ role: "user", parts })
+    // Gemini requires every response to a parallel call batch in one user turn,
+    // so consecutive tool results join the open function-response turn.
+    const previous = contents.at(-1)
+    if (previous?.role === "user" && previous.parts.some((item) => "functionResponse" in item))
+      contents[contents.length - 1] = { role: "user", parts: [...previous.parts, ...parts] }
+    else contents.push({ role: "user", parts })
   }
 
+  flushMedia()
   return contents
 })
 
@@ -521,14 +542,16 @@ const finish = (state: ParserState): ReadonlyArray<LLMEvent> => {
   if (finishReason === undefined && state.usage === undefined) return []
 
   const events: LLMEvent[] = []
-  const lifecycle = state.reasoningSignature
-    ? Lifecycle.reasoningEnd(
-        state.lifecycle,
-        events,
-        "reasoning-0",
-        googleMetadata({ thoughtSignature: state.reasoningSignature }),
-      )
-    : state.lifecycle
+  let lifecycle = state.lifecycle
+  if (state.reasoningSignature !== undefined)
+    lifecycle = Lifecycle.reasoningEnd(
+      lifecycle,
+      events,
+      "reasoning-0",
+      googleMetadata({ thoughtSignature: state.reasoningSignature }),
+    )
+  if (state.textSignature !== undefined)
+    lifecycle = Lifecycle.textEnd(lifecycle, events, "text-0", googleMetadata({ thoughtSignature: state.textSignature }))
   Lifecycle.finish(lifecycle, events, {
     reason: {
       normalized:
@@ -558,12 +581,17 @@ const step = (state: ParserState, event: GeminiEvent) => {
   const events: LLMEvent[] = []
   let hasToolCalls = nextState.hasToolCalls
   let lifecycle = nextState.lifecycle
-  let nextToolCallId = nextState.nextToolCallId
   let reasoningSignature = nextState.reasoningSignature
+  let textSignature = nextState.textSignature
+  // Supplier ids must be tracked across chunks of the same response, not just within one event's parts.
+  const seenCallIds = new Set(nextState.seenCallIds)
 
   for (const part of candidate.content.parts) {
-    if ("thoughtSignature" in part && part.thoughtSignature && "thought" in part && part.thought)
-      reasoningSignature = part.thoughtSignature
+    const signature = "thoughtSignature" in part && part.thoughtSignature ? part.thoughtSignature : undefined
+    // Gemini attaches replay signatures to thought parts, visible text, or function calls;
+    // each block kind must retain the signature attached to its own parts.
+    if (signature !== undefined && "thought" in part && part.thought) reasoningSignature = signature
+    else if (signature !== undefined && "text" in part) textSignature = signature
     if ("text" in part && part.text.length > 0) {
       if (part.thought) {
         lifecycle = Lifecycle.reasoningDelta(
@@ -571,7 +599,7 @@ const step = (state: ParserState, event: GeminiEvent) => {
           events,
           "reasoning-0",
           part.text,
-          part.thoughtSignature ? googleMetadata({ thoughtSignature: part.thoughtSignature }) : undefined,
+          signature ? googleMetadata({ thoughtSignature: signature }) : undefined,
         )
         continue
       }
@@ -581,17 +609,26 @@ const step = (state: ParserState, event: GeminiEvent) => {
         "reasoning-0",
         reasoningSignature ? googleMetadata({ thoughtSignature: reasoningSignature }) : undefined,
       )
-      lifecycle = Lifecycle.textDelta(lifecycle, events, "text-0", part.text)
+      lifecycle = Lifecycle.textDelta(
+        lifecycle,
+        events,
+        "text-0",
+        part.text,
+        textSignature ? googleMetadata({ thoughtSignature: textSignature }) : undefined,
+      )
+      textSignature = undefined
       continue
     }
 
     if ("functionCall" in part) {
       const input = part.functionCall.args === undefined ? {} : part.functionCall.args
-      const id = `tool_${nextToolCallId++}`
-      const metadata = {
-        ...(part.functionCall.id === undefined ? {} : { functionCallId: part.functionCall.id }),
-        ...(part.thoughtSignature === undefined ? {} : { thoughtSignature: part.thoughtSignature }),
-      }
+      // Gemini 2.0+ supplies a unique function call ID on the part; when omitted (e.g. Gemini 1.5),
+      // generate a globally unique ID rather than a per-request counter to prevent cross-request collisions in downstream registries.
+      // A repeated supplier id would replay as two identical calls, so only the first occurrence keeps it.
+      const supplied = part.functionCall.id
+      const duplicate = supplied !== undefined && seenCallIds.has(supplied)
+      if (supplied !== undefined) seenCallIds.add(supplied)
+      const id = supplied !== undefined && !duplicate ? supplied : `tool_${crypto.randomUUID().replaceAll("-", "")}`
       lifecycle = Lifecycle.reasoningEnd(
         lifecycle,
         events,
@@ -604,7 +641,8 @@ const step = (state: ParserState, event: GeminiEvent) => {
           id,
           name: part.functionCall.name,
           input,
-          providerMetadata: Object.keys(metadata).length > 0 ? googleMetadata(metadata) : undefined,
+          providerMetadata:
+            part.thoughtSignature === undefined ? undefined : googleMetadata({ thoughtSignature: part.thoughtSignature }),
         }),
       )
       hasToolCalls = true
@@ -616,8 +654,9 @@ const step = (state: ParserState, event: GeminiEvent) => {
       ...nextState,
       hasToolCalls,
       lifecycle,
-      nextToolCallId,
       reasoningSignature,
+      textSignature,
+      seenCallIds,
       finishReason: candidate.finishReason ?? nextState.finishReason,
     },
     events,
@@ -639,7 +678,7 @@ export const protocol = Protocol.make({
   },
   stream: {
     event: Protocol.jsonEvent(GeminiEvent),
-    initial: () => ({ hasToolCalls: false, nextToolCallId: 0, lifecycle: Lifecycle.initial() }),
+    initial: () => ({ hasToolCalls: false, lifecycle: Lifecycle.initial() }),
     step,
     onHalt: finish,
   },

packages/ai/src/protocols/index.ts

@@ -8,3 +8,4 @@ export * as OpenAICompatibleResponses from "./openai-compatible-responses.js"
 export * as OpenAIResponses from "./openai-responses.js"
 export * as OpenResponses from "./open-responses.js"
 export * as OpenResponsesChannel from "./open-responses-channel.js"
+export * as XAIResponses from "./xai-responses.js"

packages/ai/src/protocols/open-responses-channel.ts

@@ -10,6 +10,7 @@ import {
 } from "../route/transport/index.js"
 import * as ProviderShared from "./shared.js"
 import { OpenResponses } from "./open-responses.js"
+import { OpenResponsesContinuation } from "./open-responses-continuation.js"
 
 const WebSocketResponseCreate = Schema.StructWithRest(Schema.Struct({ type: Schema.tag("response.create") }), [
   Schema.Record(Schema.String, Schema.Unknown),
@@ -22,12 +23,9 @@ export interface Options {
   readonly id: string
   readonly name: string
   readonly rotateAfterMs?: number
+  readonly enabled?: (url: string) => boolean
+  readonly url?: (url: string) => string
   readonly headers?: (headers: Headers.Headers) => Headers.Headers
-  readonly driver?: (input: {
-    readonly request: Readonly<Record<string, unknown>>
-    readonly message: string
-    readonly base: WebSocketChannelDriver
-  }) => WebSocketChannelDriver
 }
 
 export interface Prepared {
@@ -147,18 +145,25 @@ export const transport = <Body>(options: Options): Transport<Body, Prepared, str
       Effect.gen(function* () {
         const parts = yield* HttpTransport.jsonRequestParts(input)
         const headers = Headers.remove(options.headers?.(parts.headers) ?? parts.headers, "content-length")
-        const channel = input.webSocket
-          ? yield* Effect.gen(function* () {
-              const create = yield* message(parts.jsonBody)
-              const base = driver(options, create.message)
-              return {
-                url: yield* WebSocketTransport.toWebSocketUrl(parts.url),
-                headers,
-                rotateAfterMs: options.rotateAfterMs,
-                driver: options.driver?.({ request: create.request, message: create.message, base }) ?? base,
-              }
-            })
-          : undefined
+        const channel =
+          input.webSocket && (options.enabled?.(parts.url) ?? true)
+            ? yield* Effect.gen(function* () {
+                const create = yield* message(parts.jsonBody)
+                const base = driver(options, create.message)
+                return {
+                  url: yield* WebSocketTransport.toWebSocketUrl(options.url?.(parts.url) ?? parts.url),
+                  headers,
+                  rotateAfterMs: options.rotateAfterMs,
+                  driver: OpenResponsesContinuation.driver({
+                    id: options.id,
+                    name: options.name,
+                    request: create.request,
+                    message: create.message,
+                    base,
+                  }),
+                }
+              })
+            : undefined
         return {
           http: {
             request: ProviderShared.jsonPost({ url: parts.url, body: parts.bodyText, headers: parts.headers }),

packages/ai/src/protocols/open-responses-continuation.ts

@@ -4,7 +4,7 @@ import { Effect, Option, Schema } from "effect"
 import * as ProviderShared from "./shared.js"
 import { OpenResponses } from "./open-responses.js"
 
-const PROTOCOL = "openai-responses.websocket.v1"
+const PROTOCOL = "open-responses.websocket.v1"
 const VERSION = 1
 const decodeEvent = Schema.decodeUnknownEffect(OpenResponses.protocol.stream.event)
 
@@ -161,4 +161,4 @@ export const driver = (input: DriverInput): WebSocketChannelDriver => {
   }
 }
 
-export const OpenAIResponsesChannel = { driver } as const
+export const OpenResponsesContinuation = { driver } as const

packages/ai/src/protocols/open-responses.ts

@@ -42,8 +42,12 @@ const OpenResponsesInputImage = Schema.Struct({
 const OpenResponsesInputFile = Schema.Struct({
   type: Schema.tag("input_file"),
   filename: Schema.String,
-  file_data: Schema.String,
-  mime_type: Schema.optional(Schema.String),
+  file_data: Schema.optional(Schema.String),
+  file_url: Schema.optional(Schema.String),
+})
+const OpenResponsesInputVideo = Schema.Struct({
+  type: Schema.tag("input_video"),
+  video_url: Schema.String,
 })
 const MediaInput = Schema.Union([OpenResponsesInputImage, OpenResponsesInputFile])
 export type MediaInput = Schema.Schema.Type<typeof MediaInput>
@@ -54,9 +58,14 @@ const OpenResponsesOutputText = Schema.Struct({
   text: Schema.String,
 })
 
-export const MessagePhase = Schema.Literals(["commentary", "final_answer"])
+export const MessagePhase = Schema.NullOr(Schema.Literals(["commentary", "final_answer"]))
 type MessagePhase = Schema.Schema.Type<typeof MessagePhase>
 
+const messagePhase = (value: unknown): MessagePhase | undefined => {
+  if (value === null || value === "commentary" || value === "final_answer") return value
+  return undefined
+}
+
 const OpenResponsesReasoningSummaryText = Schema.Struct({
   type: Schema.tag("summary_text"),
   text: Schema.String,
@@ -81,6 +90,7 @@ const OpenResponsesFunctionCallOutputContent = Schema.Union([
   OpenResponsesInputText,
   OpenResponsesInputImage,
   OpenResponsesInputFile,
+  OpenResponsesInputVideo,
 ])
 
 const OpenResponsesFunctionCallOutput = Schema.Union([
@@ -237,6 +247,7 @@ const OpenResponsesErrorPayload = Schema.Struct({
   message: optionalNull(Schema.String),
   param: optionalNull(Schema.String),
 })
+type OpenResponsesErrorPayload = Schema.Schema.Type<typeof OpenResponsesErrorPayload>
 
 const WebSocketErrorHeader = Schema.Union([Schema.String, Schema.Number, Schema.Boolean])
 export const WebSocketErrorEvent = Schema.StructWithRest(
@@ -301,20 +312,6 @@ export const Event = Schema.StructWithRest(
 )
 export type Event = Schema.Schema.Type<typeof Event>
 
-const RefusalEvent = Schema.Union([
-  Schema.Struct({
-    type: Schema.tag("response.refusal.delta"),
-    item_id: Schema.String,
-    delta: Schema.String,
-  }),
-  Schema.Struct({
-    type: Schema.tag("response.refusal.done"),
-    item_id: Schema.String,
-    refusal: Schema.String,
-  }),
-])
-const isRefusalEvent = Schema.is(RefusalEvent)
-
 export interface Extension {
   readonly id: string
   readonly name: string
@@ -323,7 +320,6 @@ export interface Extension {
     readonly media: ProviderShared.NormalizedMedia
     readonly request: LLMRequest
   }) => MediaInput | undefined
-  readonly messagePhase?: (value: unknown) => MessagePhase | null | undefined
 }
 
 const BASE: Extension = { id: ADAPTER, name: NAME }
@@ -336,7 +332,6 @@ export interface ParserState {
   readonly hasFunctionCall: boolean
   readonly lifecycle: Lifecycle.State
   readonly messageItems: ReadonlySet<string>
-  readonly messagePhase: (value: unknown) => MessagePhase | null | undefined
   readonly messagePhases: Readonly<Record<string, MessagePhase | null>>
   readonly reasoningItems: Readonly<Record<string, ReasoningStreamItem>>
   readonly store: boolean | undefined
@@ -414,26 +409,29 @@ const lowerReasoning = (part: ReasoningPart, providerMetadataKey: string): OpenR
   }
 }
 
-const hostedToolItemID = (part: ToolResultPart, providerMetadataKey: string) => {
-  return itemID(part.providerMetadata, providerMetadataKey)
-}
-
 const lowerMedia = Effect.fn("OpenResponses.lowerMedia")(function* (
   part: MediaPart,
   request: LLMRequest,
   extension: Extension,
+  target: "message" | "tool-result",
 ) {
   const media = ProviderShared.normalizeMedia(part)
   const extended = extension.lowerMedia?.({ part, media, request })
   if (extended) return extended
+  const url =
+    typeof part.data === "string" && (part.data.startsWith("https://") || part.data.startsWith("http://"))
+      ? part.data
+      : undefined
   if (!media.mime.startsWith("image/")) {
+    if (target === "tool-result" && media.mime.startsWith("video/"))
+      return { type: "input_video" as const, video_url: url ?? media.dataUrl }
     return {
       type: "input_file" as const,
       filename: part.filename ?? (media.mime === "application/pdf" ? "document.pdf" : "file"),
-      file_data: media.dataUrl,
+      ...(url ? { file_url: url } : { file_data: media.base64 }),
     }
   }
-  return { type: "input_image" as const, image_url: media.dataUrl }
+  return { type: "input_image" as const, image_url: url ?? media.dataUrl }
 })
 
 const lowerUserContent = Effect.fnUntraced(function* (
@@ -442,10 +440,17 @@ const lowerUserContent = Effect.fnUntraced(function* (
   extension: Extension,
 ) {
   if (part.type === "text") return { type: "input_text" as const, text: part.text }
-  if (part.type === "media") return yield* lowerMedia(part, request, extension)
+  if (part.type === "media") return yield* lowerMessageMedia(part, request, extension)
   return yield* ProviderShared.unsupportedContent(extension.name, "user", ["text", "media"])
 })
 
+const lowerMessageMedia = Effect.fnUntraced(function* (part: MediaPart, request: LLMRequest, extension: Extension) {
+  const lowered = yield* lowerMedia(part, request, extension, "message")
+  if (lowered.type === "input_video")
+    return yield* ProviderShared.invalidRequest(`${extension.name} user messages do not support input_video`)
+  return lowered
+})
+
 // Tool results may carry structured text, images, and files. Keep media as provider-native
 // content instead of JSON-stringifying base64 into a prompt string.
 const lowerToolResultContentItem = Effect.fnUntraced(function* (
@@ -458,6 +463,20 @@ const lowerToolResultContentItem = Effect.fnUntraced(function* (
     { type: "media", mediaType: item.mime, data: item.uri, filename: item.name },
     request,
     extension,
+    "tool-result",
+  )
+})
+
+const lowerHostedToolResultContentItem = Effect.fnUntraced(function* (
+  item: Content,
+  request: LLMRequest,
+  extension: Extension,
+) {
+  if (item.type === "text") return { type: "input_text" as const, text: item.text }
+  return yield* lowerMessageMedia(
+    { type: "media", mediaType: item.mime, data: item.uri, filename: item.name },
+    request,
+    extension,
   )
 })
 
@@ -510,7 +529,7 @@ const lowerMessages = Effect.fn("OpenResponses.lowerMessages")(function* (reques
         >((groups, part) => {
           const metadata = part.providerMetadata?.[providerMetadataKey]
           const id = itemID(part.providerMetadata, providerMetadataKey)
-          const phase = ProviderShared.isRecord(metadata) ? messagePhase(metadata.phase, extension) : undefined
+          const phase = ProviderShared.isRecord(metadata) ? messagePhase(metadata.phase) : undefined
           const group = groups.at(-1)
           if (group && group.id === id && group.phase === phase) group.parts.push(part)
           else groups.push({ id, phase, parts: [part] })
@@ -560,17 +579,19 @@ const lowerMessages = Effect.fn("OpenResponses.lowerMessages")(function* (reques
         }
         if (part.type === "tool-result" && part.providerExecuted === true) {
           flushText()
-          const itemID = hostedToolItemID(part, providerMetadataKey)
-          if (store !== false && itemID && !hostedToolReferences.has(itemID))
-            input.push({ type: "item_reference", id: itemID })
+          const id = itemID(part.providerMetadata, providerMetadataKey)
+          if (store !== false && id && !hostedToolReferences.has(id))
+            input.push({ type: "item_reference", id })
           if (store === false && part.result.type === "content") {
             const content: ReadonlyArray<Content> = part.result.value
             input.push({
               role: "user",
-              content: yield* Effect.forEach(content, (item) => lowerToolResultContentItem(item, request, extension)),
+              content: yield* Effect.forEach(content, (item) =>
+                lowerHostedToolResultContentItem(item, request, extension),
+              ),
             })
           }
-          if (itemID) hostedToolReferences.add(itemID)
+          if (id) hostedToolReferences.add(id)
           continue
         }
         return yield* ProviderShared.unsupportedContent(extension.name, "assistant", [
@@ -782,18 +803,17 @@ const reasoningMetadata = (state: ParserState, item: StreamItem & { id: string }
 // best-effort, not guaranteed.
 const onOutputItemAdded = (state: ParserState, event: Event): StepResult => {
   const item = event.item
-  if (item?.type === "message" && item.id)
+  if (item?.type === "message" && item.id) {
+    const phase = messagePhase(item.phase)
     return [
       {
         ...state,
         messageItems: new Set([...state.messageItems, item.id]),
-        messagePhases: (() => {
-          const phase = state.messagePhase(item.phase)
-          return phase === undefined ? state.messagePhases : { ...state.messagePhases, [item.id]: phase }
-        })(),
+        messagePhases: phase === undefined ? state.messagePhases : { ...state.messagePhases, [item.id]: phase },
       },
       NO_EVENTS,
     ]
+  }
   if (item && isReasoningItem(item)) {
     const events: LLMEvent[] = []
     return [
@@ -951,7 +971,7 @@ const onOutputItemDone = Effect.fn("OpenResponses.onOutputItemDone")(function* (
   if (!item) return [state, NO_EVENTS] satisfies StepResult
 
   if (item.type === "message" && item.id) {
-    const itemPhase = state.messagePhase(item.phase)
+    const itemPhase = messagePhase(item.phase)
     const phase = itemPhase === undefined ? state.messagePhases[item.id] : itemPhase
     const events: LLMEvent[] = []
     const messageItems = new Set(state.messageItems)
@@ -1059,22 +1079,26 @@ const onResponseFinish = Effect.fn("OpenResponses.onResponseFinish")(function* (
   return [{ ...state, lifecycle, hasFunctionCall, tools: pending.tools }, events] satisfies StepResult
 })
 
-// Build a single human-readable message from whatever the provider supplied.
+// Build the prettiest summary available from whatever the provider supplied.
 // When both code and message are present, prefix the code so consumers see
 // the failure mode (e.g. `rate_limit_exceeded: Slow down`) instead of just
 // the bare message — production rate limits and context-length failures used
-// to be indistinguishable from generic stream drops.
-const providerErrorMessage = (event: Event, fallback: string): string => {
-  const nested = event.error ?? event.response?.error ?? undefined
+// to be indistinguishable from generic stream drops. Returns undefined when
+// the payload carries no usable summary.
+const providerErrorMessage = (event: Event, nested: OpenResponsesErrorPayload | undefined): string | undefined => {
   const message = event.message || nested?.message || undefined
   const code = event.code || nested?.code || undefined
   if (message && code) return `${code}: ${message}`
-  return message || code || fallback
+  return message || code
 }
 
 export const providerFailure = (id: string, event: Event, fallback: string) => {
-  const code = event.code || event.error?.code || event.response?.error?.code || undefined
-  const message = providerErrorMessage(event, fallback)
+  const nested = event.error ?? event.response?.error ?? undefined
+  const code = event.code || nested?.code || undefined
+  // Keep the full raw payload on the error even when the message is a summary.
+  const body = JSON.stringify(nested ?? event) ?? ""
+  const summary = providerErrorMessage(event, nested)
+  const message = summary ?? (body === "{}" ? fallback : body)
   const status =
     typeof event.status === "number"
       ? event.status
@@ -1084,7 +1108,8 @@ export const providerFailure = (id: string, event: Event, fallback: string) => {
   return new AIError({
     module: id,
     method: "stream",
-    reason: classifyProviderFailure({ message, code, status }),
+    body,
+    reason: classifyProviderFailure({ message, code, status, rawBody: body }),
   })
 }
 
@@ -1100,21 +1125,18 @@ export const step = (state: ParserState, event: Event) => {
     )
   }
   if (event.type === "response.refusal.delta" || event.type === "response.refusal.done") {
-    if (!isRefusalEvent(event)) return ProviderShared.eventError(state.id, `${event.type} is malformed`)
+    const value = event.type === "response.refusal.delta" ? event.delta : event.refusal
+    if (!event.item_id || typeof value !== "string") return ProviderShared.eventError(state.id, `${event.type} is malformed`)
     return Effect.succeed(
       event.type === "response.refusal.delta"
         ? onOutputTextDelta(state, event, event.item_id)
-        : onOutputTextDone(state, { ...event, text: event.refusal }, event.item_id),
+        : onOutputTextDone(state, { ...event, text: value }, event.item_id),
     )
   }
   if (event.type === "response.reasoning.delta" || event.type === "response.reasoning_summary_text.delta") {
     if (!event.item_id) return ProviderShared.eventError(state.id, `${event.type} is missing item_id`)
     return Effect.succeed(onReasoningDelta(state, event, event.item_id))
   }
-  if (event.type === "response.reasoning.done" || event.type === "response.reasoning_summary_text.done") {
-    if (!event.item_id) return ProviderShared.eventError(state.id, `${event.type} is missing item_id`)
-    return Effect.succeed(onReasoningDone(state, event))
-  }
   if (event.type === "response.reasoning_summary_part.added")
     return event.item_id
       ? Effect.succeed(onReasoningSummaryPartAdded(state, event))
@@ -1159,17 +1181,11 @@ export const initial = (request: LLMRequest, extension: Extension = BASE): Parse
   tools: ToolStream.empty<string>(),
   lifecycle: Lifecycle.initial(),
   messageItems: new Set<string>(),
-  messagePhase: (value) => messagePhase(value, extension),
   messagePhases: {},
   reasoningItems: {},
   store: OpenResponsesOptions.resolve(request).store,
 })
 
-const messagePhase = (value: unknown, extension: Extension): MessagePhase | null | undefined => {
-  if (value === "commentary" || value === "final_answer") return value
-  return extension.messagePhase?.(value)
-}
-
 export const protocol = Protocol.make({
   id: ADAPTER,
   body: {

packages/ai/src/protocols/openai-images.ts

@@ -110,7 +110,7 @@ export const model = (input: ModelInput) => {
       const multipartImages = yield* Effect.forEach(sourceImages, (image) => {
         if (image.type === "bytes") return Effect.succeed({ data: image.data, mediaType: image.mediaType })
         if (image.type === "url") return ImageInputs.decodeDataUrl(image.url, ADAPTER)
-        return Effect.succeed(undefined)
+        return Effect.undefined
       })
       const multipartMask =
         mask === undefined

packages/ai/src/protocols/openai-responses.ts

@@ -5,14 +5,13 @@ import { Auth } from "../route/auth.js"
 import { Endpoint } from "../route/endpoint.js"
 import { Protocol } from "../route/protocol.js"
 import { HttpTransport } from "../route/transport/index.js"
-import { LLMEvent, LLMRequest, type JsonSchema, type ToolDefinition } from "../schema/index.js"
+import { LLMRequest, type JsonSchema, type ToolDefinition } from "../schema/index.js"
 import { OpenResponses } from "./open-responses.js"
 import { optionalArray, ProviderShared } from "./shared.js"
-import { Lifecycle } from "./utils/lifecycle.js"
 import { OpenAIImage } from "./utils/openai-image.js"
+import { ResponsesHostedTools } from "./utils/responses-hosted-tools.js"
 import { ToolSchemaProjection } from "./utils/tool-schema.js"
 import { OpenResponsesChannel } from "./open-responses-channel.js"
-import { OpenAIResponsesChannel } from "./openai-responses-channel.js"
 
 const ADAPTER = "openai-responses"
 const NAME = "OpenAI Responses"
@@ -40,20 +39,8 @@ const OpenAIResponsesToolChoice = Schema.Union([
   Schema.Struct({ type: Schema.tag("image_generation") }),
 ])
 
-const OpenAIResponsesInputItem = Schema.Union([
-  Schema.Struct({
-    type: Schema.tag("message"),
-    id: Schema.optionalKey(Schema.String),
-    role: Schema.tag("assistant"),
-    content: Schema.Array(Schema.Struct({ type: Schema.tag("output_text"), text: Schema.String })),
-    phase: Schema.optionalKey(Schema.NullOr(OpenResponses.MessagePhase)),
-  }),
-  OpenResponses.InputItem,
-])
-
 const OpenAIResponsesCoreFields = {
   ...OpenResponses.coreFields,
-  input: Schema.Array(OpenAIResponsesInputItem),
   tools: optionalArray(OpenAIResponsesTools),
   tool_choice: Schema.optional(OpenAIResponsesToolChoice),
 }
@@ -67,16 +54,6 @@ export type OpenAIResponsesBody = Schema.Schema.Type<typeof OpenAIResponsesBody>
 const extension = {
   id: ADAPTER,
   name: NAME,
-  messagePhase: (value: unknown) => (value === null ? null : undefined),
-  lowerMedia: ({ part, media, request }) => {
-    if (request.model.provider !== "xai" || media.mime !== "application/pdf") return undefined
-    return {
-      type: "input_file",
-      filename: part.filename ?? "document.pdf",
-      file_data: media.base64,
-      mime_type: media.mime,
-    }
-  },
 } satisfies OpenResponses.Extension
 
 const nativeImageToolInput = (tool: ToolDefinition) => {
@@ -128,46 +105,7 @@ const fromRequest = Effect.fn("OpenAIResponses.fromRequest")(function* (request:
   } satisfies OpenAIResponsesBody
 })
 
-type HostedToolData = OpenResponses.StreamItem & {
-  readonly id: string
-  readonly status?: string
-  readonly action?: unknown
-  readonly queries?: unknown
-  readonly results?: unknown
-  readonly code?: string
-  readonly container_id?: string
-  readonly outputs?: unknown
-  readonly server_label?: string
-  readonly output?: unknown
-  readonly result?: string
-  readonly output_format?: "png" | "jpeg" | "webp"
-  readonly error?: unknown
-}
-
-const HOSTED_TOOLS = {
-  web_search_call: { name: "web_search", input: (item) => item.action ?? {} },
-  web_search_preview_call: { name: "web_search_preview", input: (item) => item.action ?? {} },
-  file_search_call: { name: "file_search", input: (item) => ({ queries: item.queries ?? [] }) },
-  code_interpreter_call: {
-    name: "code_interpreter",
-    input: (item) => ({ code: item.code, container_id: item.container_id }),
-  },
-  computer_use_call: { name: "computer_use", input: (item) => item.action ?? {} },
-  image_generation_call: { name: "image_generation", input: () => ({}) },
-  mcp_call: {
-    name: "mcp",
-    input: (item) => ({ server_label: item.server_label, name: item.name, arguments: item.arguments }),
-  },
-  local_shell_call: { name: "local_shell", input: (item) => item.action ?? {} },
-} as const satisfies Record<string, { readonly name: string; readonly input: (item: HostedToolData) => unknown }>
-
-type HostedToolType = keyof typeof HOSTED_TOOLS
-type HostedToolItem = HostedToolData & { readonly type: HostedToolType }
-
-const isHostedToolItem = (item: OpenResponses.StreamItem): item is HostedToolItem =>
-  item.type in HOSTED_TOOLS && typeof item.id === "string" && item.id.length > 0
-
-const hostedToolResult = Effect.fn("OpenAIResponses.hostedToolResult")(function* (item: HostedToolItem) {
+const hostedToolResult = Effect.fn("OpenAIResponses.hostedToolResult")(function* (item: ResponsesHostedTools.Item) {
   const isError = item.error !== undefined && item.error !== null
   if (item.type === "image_generation_call" && item.result) {
     yield* Effect.fromResult(Encoding.decodeBase64(item.result)).pipe(
@@ -188,32 +126,22 @@ const hostedToolResult = Effect.fn("OpenAIResponses.hostedToolResult")(function*
   return isError ? { type: "error" as const, value: item.error } : { type: "json" as const, value: item }
 })
 
-const onHostedToolDone = Effect.fn("OpenAIResponses.onHostedToolDone")(function* (
-  state: OpenResponses.ParserState,
-  item: HostedToolItem,
-) {
-  const tool = HOSTED_TOOLS[item.type]
-  const providerMetadata = OpenResponses.providerMetadata(state, { itemId: item.id })
-  const events: LLMEvent[] = []
-  const lifecycle = Lifecycle.stepStart(state.lifecycle, events)
-  events.push(
-    LLMEvent.toolCall({
-      id: item.id,
-      name: tool.name,
-      input: tool.input(item),
-      providerExecuted: true,
-      providerMetadata,
-    }),
-    LLMEvent.toolResult({
-      id: item.id,
-      name: tool.name,
-      result: yield* hostedToolResult(item),
-      providerExecuted: true,
-      providerMetadata,
-    }),
-  )
-  return [{ ...state, lifecycle }, events] satisfies OpenResponses.StepResult
-})
+const HOSTED_TOOLS = {
+  web_search_call: { name: "web_search", input: (item) => item.action ?? {} },
+  web_search_preview_call: { name: "web_search_preview", input: (item) => item.action ?? {} },
+  file_search_call: { name: "file_search", input: (item) => ({ queries: item.queries ?? [] }) },
+  code_interpreter_call: {
+    name: "code_interpreter",
+    input: (item) => ({ code: item.code, container_id: item.container_id }),
+  },
+  computer_use_call: { name: "computer_use", input: (item) => item.action ?? {} },
+  image_generation_call: { name: "image_generation", input: () => ({}), result: hostedToolResult },
+  mcp_call: {
+    name: "mcp",
+    input: (item) => ({ server_label: item.server_label, name: item.name, arguments: item.arguments }),
+  },
+  local_shell_call: { name: "local_shell", input: (item) => item.action ?? {} },
+} as const satisfies ResponsesHostedTools.Definitions
 
 const step = (state: OpenResponses.ParserState, event: OpenResponses.Event) => {
   if (event.type === "response.reasoning_text.delta" || event.type === "response.reasoning_summary.delta")
@@ -224,8 +152,8 @@ const step = (state: OpenResponses.ParserState, event: OpenResponses.Event) => {
     return event.item_id
       ? Effect.succeed(OpenResponses.onReasoningDone(state, event))
       : ProviderShared.eventError(ADAPTER, `${event.type} is missing item_id`)
-  if (event.type === "response.output_item.done" && event.item && isHostedToolItem(event.item))
-    return onHostedToolDone(state, event.item)
+  if (event.type === "response.output_item.done" && event.item && ResponsesHostedTools.isItem(event.item, HOSTED_TOOLS))
+    return ResponsesHostedTools.onDone(state, event.item, HOSTED_TOOLS)
   return OpenResponses.step(state, event)
 }
 
@@ -247,12 +175,12 @@ const endpoint = Endpoint.path<OpenAIResponsesBody>(PATH, { baseURL: DEFAULT_BAS
 const auth = Auth.none
 
 export const httpTransport = HttpTransport.sseJson.with<OpenAIResponsesBody>()
-export const transport = OpenResponsesChannel.transport<OpenAIResponsesBody>({
+export const channelTransport = OpenResponsesChannel.transport<OpenAIResponsesBody>
+export const transport = channelTransport({
   id: ADAPTER,
   name: NAME,
   rotateAfterMs: WEBSOCKET_ROTATE_AFTER_MS,
   headers: (headers) => Headers.set(headers, "openai-beta", headers["openai-beta"] ?? WEBSOCKET_PROTOCOL_HEADER),
-  driver: (input) => OpenAIResponsesChannel.driver({ id: ADAPTER, name: NAME, ...input }),
 })
 
 export const route = Route.make({

packages/ai/src/protocols/utils/image-input.ts

@@ -16,7 +16,7 @@ export const decodeDataUrl = (
   url: string,
   module: string,
 ): Effect.Effect<{ readonly mediaType: string; readonly data: Uint8Array } | undefined, AIError> => {
-  if (!url.startsWith("data:")) return Effect.succeed(undefined)
+  if (!url.startsWith("data:")) return Effect.undefined
   const match = /^data:([^;,]+);base64,(.*)$/s.exec(url)
   if (!match) return Effect.fail(invalid(module, "Image data URLs must contain a MIME type and base64 data"))
   return Effect.fromResult(Encoding.decodeBase64(match[2])).pipe(

packages/ai/src/protocols/utils/lifecycle.ts

@@ -21,9 +21,15 @@ export const textStart = (state: State, events: LLMEvent[], id: string, provider
   return { ...stepped, text: new Set([...stepped.text, id]) }
 }
 
-export const textDelta = (state: State, events: LLMEvent[], id: string, text: string): State => {
+export const textDelta = (
+  state: State,
+  events: LLMEvent[],
+  id: string,
+  text: string,
+  providerMetadata?: ProviderMetadata,
+): State => {
   const started = textStart(state, events, id)
-  events.push(LLMEvent.textDelta({ id, text }))
+  events.push(LLMEvent.textDelta({ id, text, providerMetadata }))
   return started
 }
 

packages/ai/src/protocols/utils/responses-hosted-tools.ts

@@ -0,0 +1,70 @@
+import { Effect } from "effect"
+import { LLMEvent, type AIError, type ToolResultPart } from "../../schema/index.js"
+import { OpenResponses } from "../open-responses.js"
+import { Lifecycle } from "./lifecycle.js"
+
+export type Item = OpenResponses.StreamItem & {
+  readonly id: string
+  readonly status?: string
+  readonly action?: unknown
+  readonly queries?: unknown
+  readonly results?: unknown
+  readonly code?: string
+  readonly container_id?: string
+  readonly outputs?: unknown
+  readonly server_label?: string
+  readonly output?: unknown
+  readonly result?: string
+  readonly output_format?: "png" | "jpeg" | "webp"
+  readonly error?: unknown
+}
+
+export interface Definition {
+  readonly name: string
+  readonly input: (item: Item) => unknown
+  readonly result?: (item: Item) => Effect.Effect<ToolResultPart["result"], AIError>
+}
+
+export type Definitions = Readonly<Record<string, Definition>>
+
+export const isItem = <Tools extends Definitions>(item: OpenResponses.StreamItem, tools: Tools): item is Item =>
+  item.type in tools && typeof item.id === "string" && item.id.length > 0
+
+export const onDone: (
+  state: OpenResponses.ParserState,
+  item: Item,
+  tools: Definitions,
+) => Effect.Effect<OpenResponses.StepResult, AIError> = Effect.fn("ResponsesHostedTools.onDone")(function* (
+  state,
+  item,
+  tools,
+) {
+  const tool = tools[item.type]
+  if (!tool) return [state, []] satisfies OpenResponses.StepResult
+  const providerMetadata = OpenResponses.providerMetadata(state, { itemId: item.id })
+  const events: LLMEvent[] = []
+  const lifecycle = Lifecycle.stepStart(state.lifecycle, events)
+  events.push(
+    LLMEvent.toolCall({
+      id: item.id,
+      name: tool.name,
+      input: tool.input(item),
+      providerExecuted: true,
+      providerMetadata,
+    }),
+    LLMEvent.toolResult({
+      id: item.id,
+      name: tool.name,
+      result: tool.result
+        ? yield* tool.result(item)
+        : item.error !== undefined && item.error !== null
+          ? { type: "error", value: item.error }
+          : { type: "json", value: item },
+      providerExecuted: true,
+      providerMetadata,
+    }),
+  )
+  return [{ ...state, lifecycle }, events] satisfies OpenResponses.StepResult
+})
+
+export * as ResponsesHostedTools from "./responses-hosted-tools.js"

packages/ai/src/protocols/xai-responses.ts

@@ -0,0 +1,55 @@
+import { Effect } from "effect"
+import { Protocol } from "../route/protocol.js"
+import { OpenResponses } from "./open-responses.js"
+import { ProviderShared } from "./shared.js"
+import { ResponsesHostedTools } from "./utils/responses-hosted-tools.js"
+
+const ADAPTER = "xai-responses"
+const NAME = "xAI Responses"
+
+const extension = {
+  id: ADAPTER,
+  name: NAME,
+} satisfies OpenResponses.Extension
+
+const HOSTED_TOOLS = {
+  web_search_call: { name: "web_search", input: (item) => item.action ?? {} },
+  x_search_call: { name: "x_search", input: (item) => item.action ?? {} },
+  file_search_call: { name: "file_search", input: (item) => ({ queries: item.queries ?? [] }) },
+  code_interpreter_call: {
+    name: "code_interpreter",
+    input: (item) => ({ code: item.code, container_id: item.container_id }),
+  },
+  image_generation_call: { name: "image_generation", input: () => ({}) },
+  mcp_call: {
+    name: "mcp",
+    input: (item) => ({ server_label: item.server_label, name: item.name, arguments: item.arguments }),
+  },
+} as const satisfies ResponsesHostedTools.Definitions
+
+const step = (state: OpenResponses.ParserState, event: OpenResponses.Event) => {
+  if (event.type === "response.reasoning_text.delta" || event.type === "response.reasoning_summary.delta")
+    return event.item_id
+      ? Effect.succeed(OpenResponses.onReasoningDelta(state, event, event.item_id))
+      : ProviderShared.eventError(ADAPTER, `${event.type} is missing item_id`)
+  if (event.type === "response.reasoning_text.done" || event.type === "response.reasoning_summary.done")
+    return event.item_id
+      ? Effect.succeed(OpenResponses.onReasoningDone(state, event))
+      : ProviderShared.eventError(ADAPTER, `${event.type} is missing item_id`)
+  if (event.type === "response.output_item.done" && event.item && ResponsesHostedTools.isItem(event.item, HOSTED_TOOLS))
+    return ResponsesHostedTools.onDone(state, event.item, HOSTED_TOOLS)
+  return OpenResponses.step(state, event)
+}
+
+export const protocol = Protocol.make({
+  id: ADAPTER,
+  body: OpenResponses.protocol.body,
+  stream: {
+    event: OpenResponses.protocol.stream.event,
+    initial: (request) => OpenResponses.initial(request, extension),
+    step,
+    terminal: OpenResponses.terminal,
+  },
+})
+
+export * as XAIResponses from "./xai-responses.js"

packages/ai/src/provider-error.ts

@@ -74,11 +74,15 @@ const INVALID_REQUEST_CODES = new Set(["invalid_prompt", "invalid_request_error"
 const RATE_LIMIT_TEXT = /rate increased too quickly|rate[-_\s]?limit|too[_\s]?many[_\s]?requests/i
 const QUOTA_TEXT = /insufficient[-_\s]?quota|quota[-_\s]?exceeded/i
 const CONTENT_POLICY_TEXT = /content[-_\s]?policy|content_filter|safety/i
+const NETWORK_ERROR_TEXT = /network[-_\s]error/i
 
 export interface ProviderFailure {
   readonly message: string
   readonly status?: number | undefined
   readonly code?: string | undefined
+  // Raw wire payload, scanned for failure signals (codes, overflow phrases)
+  // that the summary message does not carry. Not shown to users.
+  readonly rawBody?: string | undefined
   readonly retryAfterMs?: number | undefined
   readonly rateLimit?: HttpRateLimitDetails | undefined
   readonly http?: HttpContext | undefined
@@ -88,11 +92,13 @@ export interface ProviderFailure {
 // Keep HTTP failures and provider-reported stream failures on one typed path so
 // session retry policy never needs provider-specific string matching.
 export function classifyProviderFailure(input: ProviderFailure): AIError["reason"] {
-  const body = input.http?.body ?? ""
+  const body = input.http?.body ?? input.rawBody ?? ""
   const codes = [input.code, ...providerCodes(body), ...providerCodes(input.message)]
     .filter((code): code is string => code !== undefined)
     .map((code) => code.toLowerCase())
-  const text = body || input.message
+  // Scan the raw payload too so signals missing from the summary message
+  // (e.g. overflow phrases nested in a JSON error body) still classify.
+  const text = [input.message, body].filter((value) => value.length > 0).join("\n")
   const common = { message: input.message, providerMetadata: input.providerMetadata, http: input.http }
   const clientScoped = input.status === undefined || (input.status >= 400 && input.status < 500)
 
@@ -127,6 +133,7 @@ export function classifyProviderFailure(input: ProviderFailure): AIError["reason
       retryAfterMs: input.retryAfterMs,
       rateLimit: input.rateLimit,
     })
+  if (NETWORK_ERROR_TEXT.test(text)) return new ProviderInternalReason({ ...common, status: input.status })
   if (codes.some((code) => SERVER_CODES.has(code) || code.includes("exhausted") || code.includes("unavailable")))
     return new ProviderInternalReason({
       ...common,

packages/ai/src/providers/azure.ts

@@ -1,3 +1,4 @@
+import { Headers } from "effect/unstable/http"
 import { Auth } from "../route/auth.js"
 import { type AtLeastOne, type ProviderAuthOption } from "../route/auth-options.js"
 import type { Route as RouteDef, RouteDefaultsInput } from "../route/client.js"
@@ -10,6 +11,7 @@ import { withOpenAIOptions, type OpenAIProviderOptionsInput } from "./openai-opt
 
 export const id = ProviderID.make("azure")
 const routeAuth = Auth.remove("authorization")
+const RESPONSES_WEBSOCKET_ROTATE_AFTER_MS = 55 * 60 * 1000
 
 // Azure needs the customer's resource URL; supply either `resourceName`
 // (helper builds the URL) or `baseURL` directly.
@@ -40,6 +42,30 @@ const responsesRoute = OpenAIResponses.route.with({
   id: "azure-openai-responses",
   provider: id,
   auth: routeAuth,
+  transport: OpenAIResponses.channelTransport({
+    id: "azure-openai-responses",
+    name: "Azure OpenAI Responses",
+    rotateAfterMs: RESPONSES_WEBSOCKET_ROTATE_AFTER_MS,
+    enabled: (value) => {
+      const url = new URL(value)
+      return (
+        url.protocol === "https:" &&
+        url.hostname.endsWith(".openai.azure.com") &&
+        url.pathname.endsWith("/openai/v1/responses") &&
+        url.searchParams.get("api-version") === "v1"
+      )
+    },
+    url: (value) => {
+      const url = new URL(value)
+      url.searchParams.delete("api-version")
+      return url.toString()
+    },
+    headers: (headers) => {
+      const apiKey = headers["api-key"]
+      if (!apiKey) return headers
+      return Headers.remove(Headers.set(headers, "authorization", `Bearer ${apiKey}`), "api-key")
+    },
+  }),
 })
 
 const chatRoute = OpenAIChat.route.with({

packages/ai/src/providers/google-vertex-messages.ts

@@ -13,6 +13,7 @@ export type AnthropicProviderOptionsInput = AnthropicMessages.ProviderOptionsInp
 export type AnthropicThinkingInput = AnthropicMessages.ThinkingInput
 
 const VERSION = "vertex-2023-10-16" as const
+const HEADER_VERSION = "2023-06-01" as const
 
 export const id = ProviderID.make("google-vertex")
 
@@ -57,6 +58,7 @@ const route = Route.make({
   endpoint: Endpoint.path(({ request }) => `/${request.model.id}:streamRawPredict`),
   auth: Auth.none,
   framing: AnthropicMessages.framing,
+  headers: () => ({ "anthropic-version": HEADER_VERSION }),
 })
 
 export const routes = [route]

packages/ai/src/providers/google-vertex.ts

@@ -38,13 +38,23 @@ export type Settings = ProviderPackage.Settings &
 
 const fromRequest = Effect.fn("GoogleVertex.fromRequest")(function* (request: LLMRequest) {
   const body = yield* Gemini.protocol.body.from(request)
+  // Vertex's native REST schema rejects `id` on FunctionCall/FunctionResponse parts with HTTP 400,
+  // unlike AI Studio, so history minted there cannot be lowered verbatim.
+  const contents = body.contents.map((content) => ({
+    ...content,
+    parts: content.parts.map((part) => {
+      if ("functionCall" in part) return { ...part, functionCall: { ...part.functionCall, id: undefined } }
+      if ("functionResponse" in part) return { ...part, functionResponse: { ...part.functionResponse, id: undefined } }
+      return part
+    }),
+  }))
   const value = request.providerOptions?.labels
   const labels = ProviderShared.isRecord(value)
     ? Object.fromEntries(
         Object.entries(value).filter((entry): entry is [string, string] => typeof entry[1] === "string"),
       )
     : undefined
-  return { ...body, labels }
+  return { ...body, contents, labels }
 })
 
 const protocol = {

packages/ai/src/providers/xai.ts

@@ -5,7 +5,8 @@ import { HttpOptions, ProviderID, type ModelID } from "../schema/index.js"
 import * as OpenAICompatibleProfiles from "./openai-compatible-profile.js"
 import * as OpenAICompatibleChat from "../protocols/openai-compatible-chat.js"
 import * as OpenAIChat from "../protocols/openai-chat.js"
-import * as OpenAIResponses from "../protocols/openai-responses.js"
+import { OpenResponsesChannel } from "../protocols/open-responses-channel.js"
+import { XAIResponses } from "../protocols/xai-responses.js"
 import { XAIImages } from "../protocols/xai-images.js"
 import type { OpenAIOptionsInput } from "./openai-options.js"
 import type { ProviderPackage } from "../provider-package.js"
@@ -28,13 +29,19 @@ export interface Settings extends ProviderPackage.Settings {
 
 export type { XAIImageOptions } from "../protocols/xai-images.js"
 
+const RESPONSES_WEBSOCKET_ROTATE_AFTER_MS = 24 * 60 * 1000
+
 const responsesRoute = Route.make({
   id: "openai-responses",
   provider: id,
   providerMetadataKey: "xai",
-  protocol: OpenAIResponses.protocol,
+  protocol: XAIResponses.protocol,
   endpoint: Endpoint.path("/responses", { baseURL: OpenAICompatibleProfiles.profiles.xai.baseURL }),
-  transport: OpenAIResponses.httpTransport,
+  transport: OpenResponsesChannel.transport({
+    id: "openai-responses",
+    name: "xAI Responses",
+    rotateAfterMs: RESPONSES_WEBSOCKET_ROTATE_AFTER_MS,
+  }),
   defaults: { providerOptions: { store: false } },
 })
 

packages/ai/src/schema/errors.ts

@@ -153,6 +153,9 @@ export class AIError extends Schema.TaggedError<AIError>()("AI.Error", {
   module: Schema.String,
   method: Schema.String,
   reason: AIErrorReason,
+  // Raw provider payload as a string, so classified failures never lose the
+  // original error detail even when the pretty message is a summary.
+  body: Schema.optional(Schema.String),
 }) {
   override readonly cause = this.reason
 

packages/ai/test/fixtures/recordings/azure/chat-streams-text.json

@@ -0,0 +1,31 @@
+{
+  "version": 1,
+  "metadata": {
+    "tags": [
+      "prefix:azure",
+      "provider:azure"
+    ],
+    "name": "azure/chat-streams-text",
+    "recordedAt": "2026-08-23T17:21:53.198Z"
+  },
+  "interactions": [
+    {
+      "transport": "http",
+      "request": {
+        "method": "POST",
+        "url": "https://aiden-azury-group.openai.azure.com/openai/v1/chat/completions?api-version=v1",
+        "headers": {
+          "content-type": "application/json"
+        },
+        "body": "{\"model\":\"gpt-5.6-luna\",\"messages\":[{\"role\":\"user\",\"content\":\"Reply with exactly one word: hello\"}],\"stream\":true,\"stream_options\":{\"include_usage\":true},\"store\":false,\"reasoning_effort\":\"medium\"}"
+      },
+      "response": {
+        "status": 200,
+        "headers": {
+          "content-type": "text/event-stream; charset=utf-8"
+        },
+        "body": "data: {\"choices\":[],\"created\":0,\"id\":\"\",\"model\":\"\",\"object\":\"\",\"prompt_filter_results\":[{\"prompt_index\":0,\"content_filter_results\":{}}]}\n\ndata: {\"choices\":[{\"content_filter_results\":{},\"delta\":{\"content\":\"\",\"refusal\":null,\"role\":\"assistant\"},\"finish_reason\":null,\"index\":0,\"logprobs\":null}],\"created\":1787505712,\"id\":\"chatcmpl-EG6BEiYSfrcTSI2WX8PqNzERZDcPc\",\"model\":\"gpt-5.6-luna-2026-07-09\",\"obfuscation\":\"Mxr\",\"object\":\"chat.completion.chunk\",\"service_tier\":\"default\",\"system_fingerprint\":null,\"usage\":null}\n\ndata: {\"choices\":[{\"content_filter_results\":{},\"delta\":{\"content\":\"hello\"},\"finish_reason\":null,\"index\":0,\"logprobs\":null}],\"created\":1787505712,\"id\":\"chatcmpl-EG6BEiYSfrcTSI2WX8PqNzERZDcPc\",\"model\":\"gpt-5.6-luna-2026-07-09\",\"obfuscation\":\"\",\"object\":\"chat.completion.chunk\",\"service_tier\":\"default\",\"system_fingerprint\":null,\"usage\":null}\n\ndata: {\"choices\":[{\"content_filter_results\":{},\"delta\":{},\"finish_reason\":\"stop\",\"index\":0,\"logprobs\":null}],\"created\":1787505712,\"id\":\"chatcmpl-EG6BEiYSfrcTSI2WX8PqNzERZDcPc\",\"model\":\"gpt-5.6-luna-2026-07-09\",\"obfuscation\":\"WyZa5AY1CaCeFdS\",\"object\":\"chat.completion.chunk\",\"service_tier\":\"default\",\"system_fingerprint\":null,\"usage\":null}\n\ndata: {\"choices\":[],\"created\":1787505712,\"id\":\"chatcmpl-EG6BEiYSfrcTSI2WX8PqNzERZDcPc\",\"latency_checkpoint\":{\"engine_tbt_ms\":20,\"engine_ttft_ms\":106,\"engine_ttlt_ms\":206,\"pre_inference_ms\":89,\"service_tbt_ms\":20,\"service_ttft_ms\":480,\"service_ttlt_ms\":576,\"total_duration_ms\":491,\"user_visible_ttft_ms\":391},\"model\":\"gpt-5.6-luna-2026-07-09\",\"obfuscation\":\"6\",\"object\":\"chat.completion.chunk\",\"service_tier\":\"default\",\"system_fingerprint\":null,\"usage\":{\"completion_tokens\":5,\"completion_tokens_details\":{\"accepted_prediction_tokens\":0,\"audio_tokens\":0,\"reasoning_tokens\":0,\"rejected_prediction_tokens\":0},\"prompt_tokens\":13,\"prompt_tokens_details\":{\"audio_tokens\":0,\"cache_write_tokens\":0,\"cached_tokens\":0},\"total_tokens\":18}}\n\ndata: [DONE]\n\n"
+      }
+    }
+  ]
+}

packages/ai/test/fixtures/recordings/google-vertex/calls-a-tool.json

@@ -0,0 +1,32 @@
+{
+  "version": 1,
+  "metadata": {
+    "tags": [
+      "prefix:google-vertex",
+      "provider:google-vertex",
+      "protocol:gemini"
+    ],
+    "name": "google-vertex/calls-a-tool",
+    "recordedAt": "2026-08-23T17:21:51.036Z"
+  },
+  "interactions": [
+    {
+      "transport": "http",
+      "request": {
+        "method": "POST",
+        "url": "https://aiplatform.googleapis.com/v1/publishers/google/models/gemini-3.5-flash:streamGenerateContent?alt=sse",
+        "headers": {
+          "content-type": "application/json"
+        },
+        "body": "{\"contents\":[{\"role\":\"user\",\"parts\":[{\"text\":\"What is the weather in Paris? Use the lookup_weather tool.\"}]}],\"tools\":[{\"functionDeclarations\":[{\"name\":\"lookup_weather\",\"description\":\"Look up the current weather for a city\",\"parameters\":{\"required\":[\"city\"],\"type\":\"object\",\"properties\":{\"city\":{\"type\":\"string\"}}}}]}]}"
+      },
+      "response": {
+        "status": 200,
+        "headers": {
+          "content-type": "text/event-stream"
+        },
+        "body": "data: {\"candidates\": [{\"content\": {\"role\": \"model\",\"parts\": [{\"functionCall\": {\"name\": \"lookup_weather\",\"args\": {\"city\": \"Paris\"},\"id\": \"call_425130\"},\"thoughtSignature\": \"AY89a1+1fXnLgYhHMuN3Ak6LBhT6PcrYOW7iPav4LfsacvG/Z6l1yJ+AsU7vWhFj/JyPIbsJJQ+GjohM9sCIZ6nqUOIg3reo/7osmrCvFrVHedTHQcwiPzoz2Kp3gb+uWjFAXxk1EX4IRAKcu0ox1W/Z9PpuZvHkTerGO2a82e02N6MAF1YhhtbXFvSdqLRih2Os68rdOk5/Bcld7ol8qUgeyIZ3CtI3OJ5jwRcD8LjvK33A7ZFzH5Bxp/peUmXvqnu5iNhnGBxZaJy/vupCtxRZxjaS+ojG0/UhyrnRiKIpbzQ0FBkxePPn8GCX/LOe2y3GUc98co8lN8OOuCd9ZmEdx5AjHmQkPO9fAV9SxG6Bda6SDWVL8o/Uz3WSQYoUEfAdoajEWIBvcisoeCJjb7zgmRRZ9VQSPl3RXj5LFRvX8jn0YKV1CahYbc24jA==\"}]}}],\"usageMetadata\": {\"trafficType\": \"ON_DEMAND\"},\"modelVersion\": \"gemini-3.5-flash\",\"createTime\": \"2026-08-23T17:21:50.308576Z\",\"responseId\": \"LiyLauDqErCErb8Pj8aWkAs\"}\r\n\r\ndata: {\"candidates\": [{\"content\": {\"role\": \"model\",\"parts\": [{\"text\": \"\"}]},\"finishReason\": \"STOP\"}],\"usageMetadata\": {\"promptTokenCount\": 39,\"candidatesTokenCount\": 16,\"totalTokenCount\": 102,\"trafficType\": \"ON_DEMAND\",\"promptTokensDetails\": [{\"modality\": \"TEXT\",\"tokenCount\": 39}],\"candidatesTokensDetails\": [{\"modality\": \"TEXT\",\"tokenCount\": 16}],\"thoughtsTokenCount\": 47},\"modelVersion\": \"gemini-3.5-flash\",\"createTime\": \"2026-08-23T17:21:50.308576Z\",\"responseId\": \"LiyLauDqErCErb8Pj8aWkAs\"}\r\n\r\n"
+      }
+    }
+  ]
+}

packages/ai/test/fixtures/recordings/google-vertex/continues-after-a-tool-result.json

@@ -0,0 +1,32 @@
+{
+  "version": 1,
+  "metadata": {
+    "tags": [
+      "prefix:google-vertex",
+      "provider:google-vertex",
+      "protocol:gemini"
+    ],
+    "name": "google-vertex/continues-after-a-tool-result",
+    "recordedAt": "2026-08-23T17:21:51.853Z"
+  },
+  "interactions": [
+    {
+      "transport": "http",
+      "request": {
+        "method": "POST",
+        "url": "https://aiplatform.googleapis.com/v1/publishers/google/models/gemini-3.5-flash:streamGenerateContent?alt=sse",
+        "headers": {
+          "content-type": "application/json"
+        },
+        "body": "{\"contents\":[{\"role\":\"user\",\"parts\":[{\"text\":\"What is the weather in Paris?\"}]},{\"role\":\"model\",\"parts\":[{\"functionCall\":{\"name\":\"lookup_weather\",\"args\":{\"city\":\"Paris\"}},\"thoughtSignature\":\"skip_thought_signature_validator\"}]},{\"role\":\"user\",\"parts\":[{\"functionResponse\":{\"name\":\"lookup_weather\",\"response\":{\"name\":\"lookup_weather\",\"content\":\"18C, light rain\"}}}]}],\"tools\":[{\"functionDeclarations\":[{\"name\":\"lookup_weather\",\"description\":\"Look up the current weather for a city\",\"parameters\":{\"required\":[\"city\"],\"type\":\"object\",\"properties\":{\"city\":{\"type\":\"string\"}}}}]}]}"
+      },
+      "response": {
+        "status": 200,
+        "headers": {
+          "content-type": "text/event-stream"
+        },
+        "body": "data: {\"candidates\": [{\"content\": {\"role\": \"model\",\"parts\": [{\"text\": \"The weather in Paris is currently 18°C with light rain.\"}]}}],\"usageMetadata\": {\"trafficType\": \"ON_DEMAND\"},\"modelVersion\": \"gemini-3.5-flash\",\"createTime\": \"2026-08-23T17:21:51.220919Z\",\"responseId\": \"LyyLave9DbWnrb8P1IjLmQQ\"}\r\n\r\ndata: {\"candidates\": [{\"content\": {\"role\": \"model\",\"parts\": [{\"text\": \"\",\"thoughtSignature\": \"AY89a197c+fpHJftPtcufnqMAyoRQKVEQK+KeG+RVHVx2wKil3L4jP4YWvfVbcuOFr2jio4Kre/hCrDANAoMFSvaZrdaPeo1b5bXQSmJKMH03yM5M6q6ME6JiBvXym143U4exIde4UbOh2tMeyXMvB3aWxcavIHd78g5G5QPLreo6A3LO5871cYYVeRwteY+/zbEdqfaAq1hlk6WYpWkNljYpjMyKwr15YC8rFLh3HYayS9tTN++GGrk/reZn6C3OEPlzPou/pXRATzcEAGVl/TW\"}]},\"finishReason\": \"STOP\"}],\"usageMetadata\": {\"promptTokenCount\": 59,\"candidatesTokenCount\": 15,\"totalTokenCount\": 98,\"trafficType\": \"ON_DEMAND\",\"promptTokensDetails\": [{\"modality\": \"TEXT\",\"tokenCount\": 59}],\"candidatesTokensDetails\": [{\"modality\": \"TEXT\",\"tokenCount\": 15}],\"thoughtsTokenCount\": 24},\"modelVersion\": \"gemini-3.5-flash\",\"createTime\": \"2026-08-23T17:21:51.220919Z\",\"responseId\": \"LyyLave9DbWnrb8P1IjLmQQ\"}\r\n\r\n"
+      }
+    }
+  ]
+}

packages/ai/test/fixtures/recordings/google-vertex/streams-text.json

@@ -0,0 +1,32 @@
+{
+  "version": 1,
+  "metadata": {
+    "tags": [
+      "prefix:google-vertex",
+      "provider:google-vertex",
+      "protocol:gemini"
+    ],
+    "name": "google-vertex/streams-text",
+    "recordedAt": "2026-08-23T17:21:50.112Z"
+  },
+  "interactions": [
+    {
+      "transport": "http",
+      "request": {
+        "method": "POST",
+        "url": "https://aiplatform.googleapis.com/v1/publishers/google/models/gemini-3.5-flash:streamGenerateContent?alt=sse",
+        "headers": {
+          "content-type": "application/json"
+        },
+        "body": "{\"contents\":[{\"role\":\"user\",\"parts\":[{\"text\":\"Reply with exactly one word: hello\"}]}]}"
+      },
+      "response": {
+        "status": 200,
+        "headers": {
+          "content-type": "text/event-stream"
+        },
+        "body": "data: {\"candidates\": [{\"content\": {\"role\": \"model\",\"parts\": [{\"text\": \"Hello\"}]}}],\"usageMetadata\": {\"trafficType\": \"ON_DEMAND\"},\"modelVersion\": \"gemini-3.5-flash\",\"createTime\": \"2026-08-23T17:21:48.528714Z\",\"responseId\": \"LCyLasqiIO6crb8P1sDboQc\"}\r\n\r\ndata: {\"candidates\": [{\"content\": {\"role\": \"model\",\"parts\": [{\"text\": \"\",\"thoughtSignature\": \"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\"}]},\"finishReason\": \"STOP\"}],\"usageMetadata\": {\"promptTokenCount\": 7,\"candidatesTokenCount\": 1,\"totalTokenCount\": 150,\"trafficType\": \"ON_DEMAND\",\"promptTokensDetails\": [{\"modality\": \"TEXT\",\"tokenCount\": 7}],\"candidatesTokensDetails\": [{\"modality\": \"TEXT\",\"tokenCount\": 1}],\"thoughtsTokenCount\": 142},\"modelVersion\": \"gemini-3.5-flash\",\"createTime\": \"2026-08-23T17:21:48.528714Z\",\"responseId\": \"LCyLasqiIO6crb8P1sDboQc\"}\r\n\r\n"
+      }
+    }
+  ]
+}

packages/ai/test/fixtures/recordings/pdf/openai-tool-result.json

@@ -1,7 +1,14 @@
 {
   "version": 1,
   "metadata": {
-    "tags": ["prefix:pdf", "pdf", "provider:openai", "protocol:openai-responses", "tool", "tool-result"],
+    "tags": [
+      "prefix:pdf",
+      "pdf",
+      "provider:openai",
+      "protocol:openai-responses",
+      "tool",
+      "tool-result"
+    ],
     "name": "pdf/openai-tool-result",
     "recordedAt": "2026-07-22T18:15:36.438Z"
   },
@@ -14,7 +21,7 @@
         "headers": {
           "content-type": "application/json"
         },
-        "body": "{\"model\":\"gpt-4o-mini\",\"input\":[{\"role\":\"system\",\"content\":\"Read the PDF returned by the tool and follow the user's response format exactly.\"},{\"role\":\"user\",\"content\":[{\"type\":\"input_text\",\"text\":\"Return only the verification code from the PDF.\"}]},{\"type\":\"function_call\",\"call_id\":\"call_pdf_1\",\"name\":\"read_pdf\",\"arguments\":\"{}\"},{\"type\":\"function_call_output\",\"call_id\":\"call_pdf_1\",\"output\":[{\"type\":\"input_text\",\"text\":\"PDF read successfully\"},{\"type\":\"input_file\",\"filename\":\"verification.pdf\",\"file_data\":\"data:application/pdf;base64,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\"}]}],\"tools\":[{\"type\":\"function\",\"name\":\"read_pdf\",\"description\":\"Read the attached PDF.\",\"parameters\":{\"type\":\"object\",\"properties\":{},\"additionalProperties\":false},\"strict\":false}],\"store\":false,\"max_output_tokens\":40,\"temperature\":0,\"stream\":true}"
+        "body": "{\"model\":\"gpt-4o-mini\",\"input\":[{\"role\":\"system\",\"content\":\"Read the PDF returned by the tool and follow the user's response format exactly.\"},{\"role\":\"user\",\"content\":[{\"type\":\"input_text\",\"text\":\"Return only the verification code from the PDF.\"}]},{\"type\":\"function_call\",\"call_id\":\"call_pdf_1\",\"name\":\"read_pdf\",\"arguments\":\"{}\"},{\"type\":\"function_call_output\",\"call_id\":\"call_pdf_1\",\"output\":[{\"type\":\"input_text\",\"text\":\"PDF read successfully\"},{\"type\":\"input_file\",\"filename\":\"verification.pdf\",\"file_data\":\"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\"}]}],\"tools\":[{\"type\":\"function\",\"name\":\"read_pdf\",\"description\":\"Read the attached PDF.\",\"parameters\":{\"type\":\"object\",\"properties\":{},\"additionalProperties\":false},\"strict\":false}],\"store\":false,\"max_output_tokens\":40,\"temperature\":0,\"stream\":true}"
       },
       "response": {
         "status": 200,

packages/ai/test/fixtures/recordings/pdf/openai-user-input.json

@@ -1,7 +1,13 @@
 {
   "version": 1,
   "metadata": {
-    "tags": ["prefix:pdf", "pdf", "provider:openai", "protocol:openai-responses", "user-input"],
+    "tags": [
+      "prefix:pdf",
+      "pdf",
+      "provider:openai",
+      "protocol:openai-responses",
+      "user-input"
+    ],
     "name": "pdf/openai-user-input",
     "recordedAt": "2026-07-22T18:15:34.867Z"
   },
@@ -14,7 +20,7 @@
         "headers": {
           "content-type": "application/json"
         },
-        "body": "{\"model\":\"gpt-4o-mini\",\"input\":[{\"role\":\"user\",\"content\":[{\"type\":\"input_file\",\"filename\":\"verification.pdf\",\"file_data\":\"data:application/pdf;base64,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\"},{\"type\":\"input_text\",\"text\":\"Return only the verification code from the PDF.\"}]}],\"store\":false,\"max_output_tokens\":40,\"temperature\":0,\"stream\":true}"
+        "body": "{\"model\":\"gpt-4o-mini\",\"input\":[{\"role\":\"user\",\"content\":[{\"type\":\"input_file\",\"filename\":\"verification.pdf\",\"file_data\":\"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\"},{\"type\":\"input_text\",\"text\":\"Return only the verification code from the PDF.\"}]}],\"store\":false,\"max_output_tokens\":40,\"temperature\":0,\"stream\":true}"
       },
       "response": {
         "status": 200,

packages/ai/test/fixtures/recordings/pdf/xai-tool-result.json

@@ -1,9 +1,17 @@
 {
   "version": 1,
   "metadata": {
-    "tags": ["prefix:pdf", "pdf", "provider:xai", "protocol:openai-responses", "tool", "tool-result"],
+    "tags": [
+      "prefix:pdf",
+      "pdf",
+      "provider:xai",
+      "protocol:xai-responses",
+      "tool",
+      "tool-result"
+    ],
     "name": "pdf/xai-tool-result",
-    "recordedAt": "2026-07-22T18:15:43.608Z"
+    "recordedAt": "2026-07-22T18:15:43.608Z",
+    "protocol": "xai-responses"
   },
   "interactions": [
     {
@@ -14,7 +22,7 @@
         "headers": {
           "content-type": "application/json"
         },
-        "body": "{\"model\":\"grok-4.5\",\"input\":[{\"role\":\"system\",\"content\":\"Read the PDF returned by the tool and follow the user's response format exactly.\"},{\"role\":\"user\",\"content\":[{\"type\":\"input_text\",\"text\":\"Return only the verification code from the PDF.\"}]},{\"type\":\"function_call\",\"call_id\":\"call_pdf_1\",\"name\":\"read_pdf\",\"arguments\":\"{}\"},{\"type\":\"function_call_output\",\"call_id\":\"call_pdf_1\",\"output\":[{\"type\":\"input_text\",\"text\":\"PDF read successfully\"},{\"type\":\"input_file\",\"filename\":\"verification.pdf\",\"file_data\":\"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\",\"mime_type\":\"application/pdf\"}]}],\"tools\":[{\"type\":\"function\",\"name\":\"read_pdf\",\"description\":\"Read the attached PDF.\",\"parameters\":{\"type\":\"object\",\"properties\":{},\"additionalProperties\":false},\"strict\":false}],\"store\":false,\"max_output_tokens\":40,\"temperature\":0,\"stream\":true}"
+        "body": "{\"model\":\"grok-4.5\",\"input\":[{\"role\":\"system\",\"content\":\"Read the PDF returned by the tool and follow the user's response format exactly.\"},{\"role\":\"user\",\"content\":[{\"type\":\"input_text\",\"text\":\"Return only the verification code from the PDF.\"}]},{\"type\":\"function_call\",\"call_id\":\"call_pdf_1\",\"name\":\"read_pdf\",\"arguments\":\"{}\"},{\"type\":\"function_call_output\",\"call_id\":\"call_pdf_1\",\"output\":[{\"type\":\"input_text\",\"text\":\"PDF read successfully\"},{\"type\":\"input_file\",\"filename\":\"verification.pdf\",\"file_data\":\"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\"}]}],\"tools\":[{\"type\":\"function\",\"name\":\"read_pdf\",\"description\":\"Read the attached PDF.\",\"parameters\":{\"type\":\"object\",\"properties\":{},\"additionalProperties\":false},\"strict\":false}],\"store\":false,\"max_output_tokens\":40,\"temperature\":0,\"stream\":true}"
       },
       "response": {
         "status": 200,

packages/ai/test/fixtures/recordings/pdf/xai-user-input.json

@@ -1,9 +1,16 @@
 {
   "version": 1,
   "metadata": {
-    "tags": ["prefix:pdf", "pdf", "provider:xai", "protocol:openai-responses", "user-input"],
+    "tags": [
+      "prefix:pdf",
+      "pdf",
+      "provider:xai",
+      "protocol:xai-responses",
+      "user-input"
+    ],
     "name": "pdf/xai-user-input",
-    "recordedAt": "2026-07-22T18:15:42.429Z"
+    "recordedAt": "2026-07-22T18:15:42.429Z",
+    "protocol": "xai-responses"
   },
   "interactions": [
     {
@@ -14,7 +21,7 @@
         "headers": {
           "content-type": "application/json"
         },
-        "body": "{\"model\":\"grok-4.5\",\"input\":[{\"role\":\"user\",\"content\":[{\"type\":\"input_file\",\"filename\":\"verification.pdf\",\"file_data\":\"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\",\"mime_type\":\"application/pdf\"},{\"type\":\"input_text\",\"text\":\"Return only the verification code from the PDF.\"}]}],\"store\":false,\"max_output_tokens\":40,\"temperature\":0,\"stream\":true}"
+        "body": "{\"model\":\"grok-4.5\",\"input\":[{\"role\":\"user\",\"content\":[{\"type\":\"input_file\",\"filename\":\"verification.pdf\",\"file_data\":\"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\"},{\"type\":\"input_text\",\"text\":\"Return only the verification code from the PDF.\"}]}],\"store\":false,\"max_output_tokens\":40,\"temperature\":0,\"stream\":true}"
       },
       "response": {
         "status": 200,

packages/ai/test/provider-error.test.ts

@@ -82,6 +82,14 @@ describe("provider error classification", () => {
     ])
   })
 
+  test("classifies network error text as provider internal", () => {
+    expect(
+      ["network error", "network-error", "network_error"].map(
+        (message) => classifyProviderFailure({ message })._tag,
+      ),
+    ).toEqual(["ProviderInternal", "ProviderInternal", "ProviderInternal"])
+  })
+
   test("classifies nested provider codes when a top-level code is also present", () => {
     expect(
       [
@@ -98,3 +106,20 @@ describe("provider error classification", () => {
     expect(classifyProviderFailure({ message: "not-json" })._tag).toBe("UnknownProvider")
   })
 })
+
+describe("provider error rawBody classification", () => {
+  test("classifies overflow signals buried in the raw payload when the summary is vague", () => {
+    const reason = classifyProviderFailure({
+      message: "Request failed",
+      rawBody: '{"error":{"message":"This model\'s maximum context length is 40960 tokens"}}',
+    })
+    expect(reason._tag).toBe("InvalidRequest")
+    expect(reason).toMatchObject({ classification: "context-overflow" })
+  })
+
+  test("extracts nested codes from the raw payload", () => {
+    expect(
+      classifyProviderFailure({ message: "Request failed", rawBody: '{"error":{"code":"insufficient_quota"}}' })._tag,
+    ).toBe("QuotaExceeded")
+  })
+})

packages/ai/test/provider/anthropic-messages.test.ts

@@ -327,6 +327,29 @@ describe("Anthropic Messages route", () => {
     }),
   )
 
+  it.effect("scrubs outbound tool call IDs without truncating them", () =>
+    Effect.gen(function* () {
+      const id = `functions.lookup:1|${"x".repeat(64)}`
+      const scrubbed = `functions_lookup_1_${"x".repeat(64)}`
+      const prepared = yield* compileRequest(
+        LLM.request({
+          model,
+          messages: [
+            Message.assistant([ToolCallPart.make({ id, name: "lookup", input: {} })]),
+            Message.tool({ id, name: "lookup", result: "done" }),
+          ],
+          cache: "none",
+        }),
+      )
+
+      expect(prepared.body.messages).toMatchObject([
+        { role: "assistant", content: [{ type: "tool_use", id: scrubbed, name: "lookup", input: {} }] },
+        { role: "user", content: [{ type: "tool_result", tool_use_id: scrubbed }] },
+      ])
+      expect(scrubbed.length).toBeGreaterThan(64)
+    }),
+  )
+
   it.effect("batches parallel tool results into one Anthropic user message", () =>
     Effect.gen(function* () {
       const prepared = yield* compileRequest(
@@ -1393,14 +1416,14 @@ describe("Anthropic Messages route", () => {
             Message.assistant([
               {
                 type: "tool-call",
-                id: "srvtoolu_abc",
+                id: "srvtoolu.abc",
                 name: "web_search",
                 input: { query: "effect 4" },
                 providerExecuted: true,
               },
               {
                 type: "tool-result",
-                id: "srvtoolu_abc",
+                id: "srvtoolu.abc",
                 name: "web_search",
                 result: { type: "json", value: [{ url: "https://example.com" }] },
                 providerExecuted: true,

packages/ai/test/provider/azure.recorded.test.ts

@@ -0,0 +1,93 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { LLM, Message, ToolDefinition, ToolCallPart } from "../../src/index.js"
+import { Azure } from "../../src/providers.js"
+import { LLMClient } from "../../src/route.js"
+import { recordedTests } from "../recorded-test.js"
+
+const resourceName = process.env.AZURE_OPENAI_RESOURCE_NAME ?? "aiden-azury-group"
+
+const chatModel = Azure.configure({
+  resourceName,
+  apiKey: process.env.AZURE_OPENAI_API_KEY ?? "fixture",
+}).chat("gpt-5.6-luna")
+
+const responsesModel = Azure.configure({
+  resourceName,
+  apiKey: process.env.AZURE_OPENAI_API_KEY ?? "fixture",
+}).responses("gpt-5.6-luna")
+
+const lookupWeather = ToolDefinition.make({
+  name: "lookup_weather",
+  description: "Look up the current weather for a city",
+  inputSchema: { type: "object", properties: { city: { type: "string" } }, required: ["city"] },
+})
+
+const recorded = recordedTests({
+  prefix: "azure",
+  provider: "azure",
+  requires: ["AZURE_OPENAI_API_KEY"],
+})
+
+describe("Azure OpenAI recorded", () => {
+  recorded.effect("chat streams text", () =>
+    Effect.gen(function* () {
+      const response = yield* LLMClient.generate(
+        LLM.request({ model: chatModel, prompt: "Reply with exactly one word: hello" }),
+      )
+
+      expect(response.text.toLowerCase()).toContain("hello")
+    }),
+  )
+
+  recorded.effect("responses streams text", () =>
+    Effect.gen(function* () {
+      const response = yield* LLMClient.generate(
+        LLM.request({ model: responsesModel, prompt: "Reply with exactly one word: bonjour" }),
+      )
+
+      expect(response.text.toLowerCase()).toContain("bonjour")
+    }),
+  )
+
+  recorded.effect("responses calls a tool", () =>
+    Effect.gen(function* () {
+      const response = yield* LLMClient.generate(
+        LLM.request({
+          model: responsesModel,
+          prompt: "What is the weather in Paris? Use the lookup_weather tool.",
+          tools: [lookupWeather],
+        }),
+      )
+
+      const call = response.toolCalls.find((part) => part.name === "lookup_weather")
+      expect(call).toBeDefined()
+      expect(call?.input).toMatchObject({ city: "Paris" })
+    }),
+  )
+
+  recorded.effect("responses continues after a tool result", () =>
+    Effect.gen(function* () {
+      const response = yield* LLMClient.generate(
+        LLM.request({
+          model: responsesModel,
+          messages: [
+            Message.user("What is the weather in Paris?"),
+            Message.assistant([
+              ToolCallPart.make({ id: "call_paris_1", name: "lookup_weather", input: { city: "Paris" } }),
+            ]),
+            Message.tool({
+              id: "call_paris_1",
+              name: "lookup_weather",
+              result: "18C, light rain",
+              resultType: "text",
+            }),
+          ],
+          tools: [lookupWeather],
+        }),
+      )
+
+      expect(response.text.length).toBeGreaterThan(0)
+    }),
+  )
+})

packages/ai/test/provider/gemini.test.ts

@@ -156,14 +156,13 @@ describe("Gemini route", () => {
       expect(prepared.body.contents).toEqual([
         {
           role: "model",
-          parts: [{ functionCall: { id: undefined, name: "lookup", args: { query: "weather" } } }],
+          parts: [{ functionCall: { name: "lookup", args: { query: "weather" } } }],
         },
         {
           role: "user",
           parts: [
             {
               functionResponse: {
-                id: undefined,
                 name: "lookup",
                 response: { name: "lookup", content: "done" },
               },
@@ -181,6 +180,149 @@ describe("Gemini route", () => {
     }),
   )
 
+  it.effect("merges parallel tool results into one function-response turn", () =>
+    Effect.gen(function* () {
+      const prepared = yield* compileRequest(
+        LLM.request({
+          model,
+          messages: [
+            Message.assistant([
+              ToolCallPart.make({ id: "call_1", name: "lookup", input: { query: "weather" } }),
+              ToolCallPart.make({ id: "call_2", name: "lookup", input: { query: "time" } }),
+            ]),
+            Message.tool({ id: "call_1", name: "lookup", result: "sunny", resultType: "text" }),
+            Message.tool({ id: "call_2", name: "lookup", result: "noon", resultType: "text" }),
+          ],
+        }),
+      )
+
+      expect(prepared.body.contents).toEqual([
+        {
+          role: "model",
+          parts: [
+            { functionCall: { name: "lookup", args: { query: "weather" } } },
+            { functionCall: { name: "lookup", args: { query: "time" } } },
+          ],
+        },
+        {
+          role: "user",
+          parts: [
+            {
+              functionResponse: {
+                name: "lookup",
+                response: { name: "lookup", content: "sunny" },
+              },
+            },
+            {
+              functionResponse: {
+                name: "lookup",
+                response: { name: "lookup", content: "noon" },
+              },
+            },
+          ],
+        },
+      ])
+    }),
+  )
+
+  it.effect("lowers function call ids for gemini 3 models", () =>
+    Effect.gen(function* () {
+      const prepared = yield* compileRequest(
+        LLM.request({
+          model: gemini3,
+          messages: [
+            Message.assistant([ToolCallPart.make({ id: "call_1", name: "lookup", input: { query: "weather" } })]),
+            Message.tool({ id: "call_1", name: "lookup", result: "done", resultType: "text" }),
+          ],
+        }),
+      )
+
+      expect(prepared.body.contents).toEqual([
+        {
+          role: "model",
+          parts: [
+            {
+              functionCall: { id: "call_1", name: "lookup", args: { query: "weather" } },
+              thoughtSignature: "skip_thought_signature_validator",
+            },
+          ],
+        },
+        {
+          role: "user",
+          parts: [
+            {
+              functionResponse: {
+                id: "call_1",
+                name: "lookup",
+                response: { name: "lookup", content: "done" },
+              },
+            },
+          ],
+        },
+      ])
+    }),
+  )
+
+  it.effect("omits function call ids entirely for pre-gemini-3 models", () =>
+    Effect.gen(function* () {
+      const messages = [
+        Message.assistant([ToolCallPart.make({ id: "call_1", name: "lookup", input: { query: "weather" } })]),
+        Message.tool({ id: "call_1", name: "lookup", result: "done", resultType: "text" }),
+      ]
+      const legacy = yield* compileRequest(LLM.request({ model, messages }))
+      const older = yield* compileRequest(
+        LLM.request({
+          model: Gemini.route
+            .with({
+              endpoint: { baseURL: "https://generativelanguage.test/v1beta/" },
+              auth: Auth.header("x-goog-api-key", "test"),
+            })
+            .model({ id: "gemini-1.5-flash" }),
+          messages,
+        }),
+      )
+
+      expect(legacy.body.contents).toEqual([
+        { role: "model", parts: [{ functionCall: { name: "lookup", args: { query: "weather" } } }] },
+        {
+          role: "user",
+          parts: [{ functionResponse: { name: "lookup", response: { name: "lookup", content: "done" } } }],
+        },
+      ])
+      expect(JSON.stringify(legacy.body.contents)).not.toContain('"id"')
+      expect(JSON.stringify(older.body.contents)).not.toContain('"id"')
+    }),
+  )
+
+  it.effect("includes function call ids for non-gemini model ids", () =>
+    Effect.gen(function* () {
+      const prepared = yield* compileRequest(
+        LLM.request({
+          model: Gemini.route
+            .with({
+              endpoint: { baseURL: "https://generativelanguage.test/v1beta/" },
+              auth: Auth.header("x-goog-api-key", "test"),
+            })
+            .model({ id: "gemma-3-27b-it" }),
+          messages: [
+            Message.assistant([ToolCallPart.make({ id: "call_1", name: "lookup", input: { query: "weather" } })]),
+            Message.tool({ id: "call_1", name: "lookup", result: "done", resultType: "text" }),
+          ],
+        }),
+      )
+
+      expect(prepared.body.contents).toEqual([
+        { role: "model", parts: [{ functionCall: { id: "call_1", name: "lookup", args: { query: "weather" } } }] },
+        {
+          role: "user",
+          parts: [
+            { functionResponse: { id: "call_1", name: "lookup", response: { name: "lookup", content: "done" } } },
+          ],
+        },
+      ])
+    }),
+  )
+
   it.effect("prepares multimodal user input and tool history", () =>
     Effect.gen(function* () {
       const prepared = yield* compileRequest(
@@ -281,14 +423,18 @@ describe("Gemini route", () => {
               functionResponse: {
                 name: "read",
                 response: { name: "read", content: "Image read successfully" },
-                parts: [
-                  { inlineData: { mimeType: "image/png", data: "AAECAw==" } },
-                  { inlineData: { mimeType: "application/pdf", data: "JVBERi0xLjQ=" } },
-                ],
               },
             },
           ],
         },
+        {
+          role: "user",
+          parts: [
+            { text: "Attached media from tool result:" },
+            { inlineData: { mimeType: "image/png", data: "AAECAw==" } },
+            { inlineData: { mimeType: "application/pdf", data: "JVBERi0xLjQ=" } },
+          ],
+        },
       ])
       expect(JSON.stringify(prepared.body.contents)).not.toContain('"content":"AAECAw=="')
     }),
@@ -321,11 +467,164 @@ describe("Gemini route", () => {
               functionResponse: {
                 name: "read",
                 response: { name: "read", content: "" },
-                parts: [{ inlineData: { mimeType: "image/jpeg", data: "/9j/" } }],
               },
             },
           ],
         },
+        {
+          role: "user",
+          parts: [
+            { text: "Attached media from tool result:" },
+            { inlineData: { mimeType: "image/jpeg", data: "/9j/" } },
+          ],
+        },
+      ])
+    }),
+  )
+
+  it.effect("nests media inside function responses for gemini 3", () =>
+    Effect.gen(function* () {
+      const prepared = yield* compileRequest(
+        LLM.request({
+          model: gemini3,
+          messages: [
+            Message.assistant([
+              ToolCallPart.make({
+                id: "call_image",
+                name: "read",
+                input: { path: "pixel.png" },
+                providerMetadata: { google: { thoughtSignature: "sig_1" } },
+              }),
+            ]),
+            Message.tool({
+              id: "call_image",
+              name: "read",
+              result: {
+                type: "content",
+                value: [
+                  { type: "text", text: "Image read successfully" },
+                  { type: "file", uri: "data:image/png;base64,AAECAw==", mime: "image/png", name: "pixel.png" },
+                ],
+              },
+            }),
+          ],
+        }),
+      )
+
+      expect(prepared.body.contents).toEqual([
+        {
+          role: "model",
+          parts: [
+            { functionCall: { id: "call_image", name: "read", args: { path: "pixel.png" } }, thoughtSignature: "sig_1" },
+          ],
+        },
+        {
+          role: "user",
+          parts: [
+            {
+              functionResponse: {
+                id: "call_image",
+                name: "read",
+                response: { name: "read", content: "Image read successfully" },
+                parts: [{ inlineData: { mimeType: "image/png", data: "AAECAw==" } }],
+              },
+            },
+          ],
+        },
+      ])
+    }),
+  )
+
+  it.effect("flushes pending media before system update text", () =>
+    Effect.gen(function* () {
+      const prepared = yield* compileRequest(
+        LLM.request({
+          model,
+          messages: [
+            Message.assistant([ToolCallPart.make({ id: "call_1", name: "shot", input: {} })]),
+            Message.tool({
+              id: "call_1",
+              name: "shot",
+              result: {
+                type: "content",
+                value: [{ type: "file", uri: "data:image/png;base64,AAEC", mime: "image/png" }],
+              },
+            }),
+            Message.system("Update."),
+          ],
+        }),
+      )
+
+      expect(prepared.body.contents).toEqual([
+        { role: "model", parts: [{ functionCall: { name: "shot", args: {} } }] },
+        {
+          role: "user",
+          parts: [{ functionResponse: { name: "shot", response: { name: "shot", content: "" } } }],
+        },
+        {
+          role: "user",
+          parts: [
+            { text: "Attached media from tool result:" },
+            { inlineData: { mimeType: "image/png", data: "AAEC" } },
+            { text: "<system-update>\nUpdate.\n</system-update>" },
+          ],
+        },
+      ])
+    }),
+  )
+
+  it.effect("collects legacy tool media into one turn after merged responses", () =>
+    Effect.gen(function* () {
+      const prepared = yield* compileRequest(
+        LLM.request({
+          model,
+          messages: [
+            Message.assistant([
+              ToolCallPart.make({ id: "call_1", name: "shot", input: {} }),
+              ToolCallPart.make({ id: "call_2", name: "shot", input: {} }),
+            ]),
+            Message.tool({
+              id: "call_1",
+              name: "shot",
+              result: {
+                type: "content",
+                value: [{ type: "file", uri: "data:image/png;base64,AAEC", mime: "image/png" }],
+              },
+            }),
+            Message.tool({
+              id: "call_2",
+              name: "shot",
+              result: {
+                type: "content",
+                value: [{ type: "text", text: "no image here" }],
+              },
+            }),
+          ],
+        }),
+      )
+
+      expect(prepared.body.contents).toEqual([
+        {
+          role: "model",
+          parts: [
+            { functionCall: { name: "shot", args: {} } },
+            { functionCall: { name: "shot", args: {} } },
+          ],
+        },
+        {
+          role: "user",
+          parts: [
+            { functionResponse: { name: "shot", response: { name: "shot", content: "" } } },
+            { functionResponse: { name: "shot", response: { name: "shot", content: "no image here" } } },
+          ],
+        },
+        {
+          role: "user",
+          parts: [
+            { text: "Attached media from tool result:" },
+            { inlineData: { mimeType: "image/png", data: "AAEC" } },
+          ],
+        },
       ])
     }),
   )
@@ -647,8 +946,8 @@ describe("Gemini route", () => {
         providerMetadata: { google: { thoughtSignature: "thought_sig" } },
       })
       expect(toolCall).toMatchObject({
-        id: "tool_0",
-        providerMetadata: { google: { functionCallId: "provider_call", thoughtSignature: "tool_sig" } },
+        id: "provider_call",
+        providerMetadata: { google: { thoughtSignature: "tool_sig" } },
       })
       expect(response.events.findIndex((event) => event.type === "reasoning-end")).toBeLessThan(
         response.events.findIndex((event) => event.type === "tool-call"),
@@ -656,23 +955,22 @@ describe("Gemini route", () => {
 
       const prepared = yield* compileRequest(
         LLM.request({
-          model,
+          model: gemini3,
           messages: [
             Message.assistant([
               { type: "reasoning", text: "thinking", providerMetadata: reasoningEnd?.providerMetadata },
               ToolCallPart.make({
-                id: "tool_0",
+                id: "provider_call",
                 name: "lookup",
                 input: { query: "weather" },
                 providerMetadata: toolCall?.providerMetadata,
               }),
             ]),
             Message.tool({
-              id: "tool_0",
+              id: "provider_call",
               name: "lookup",
               result: "done",
               resultType: "text",
-              providerMetadata: toolCall?.providerMetadata,
             }),
           ],
         }),
@@ -704,6 +1002,61 @@ describe("Gemini route", () => {
     }),
   )
 
+  it.effect("preserves thoughtSignature on visible text parts", () =>
+    Effect.gen(function* () {
+      const body = sseEvents({
+        candidates: [
+          {
+            content: { role: "model", parts: [{ text: "All done.", thoughtSignature: "text_sig" }] },
+            finishReason: "STOP",
+          },
+        ],
+      })
+      const response = yield* LLMClient.generate(request).pipe(Effect.provide(fixedResponse(body)))
+      const delta = response.events.find((event) => event.type === "text-delta")
+      expect(delta).toMatchObject({
+        id: "text-0",
+        text: "All done.",
+        providerMetadata: { google: { thoughtSignature: "text_sig" } },
+      })
+
+      const prepared = yield* compileRequest(
+        LLM.request({
+          model,
+          messages: [Message.assistant([{ type: "text", text: "All done.", providerMetadata: delta?.providerMetadata }])],
+        }),
+      )
+      expect(prepared.body.contents).toEqual([
+        { role: "model", parts: [{ text: "All done.", thoughtSignature: "text_sig" }] },
+      ])
+    }),
+  )
+
+  it.effect("flushes a trailing empty signed text part at block close", () =>
+    Effect.gen(function* () {
+      const body = sseEvents({
+        candidates: [
+          {
+            content: {
+              role: "model",
+              parts: [{ text: "Working." }, { text: "", thoughtSignature: "tail_sig" }],
+            },
+            finishReason: "STOP",
+          },
+        ],
+      })
+      const response = yield* LLMClient.generate(request).pipe(Effect.provide(fixedResponse(body)))
+      const delta = response.events.find((event) => event.type === "text-delta")
+      const end = response.events.find((event) => event.type === "text-end")
+
+      expect(delta).toMatchObject({ id: "text-0", text: "Working.", providerMetadata: undefined })
+      expect(end).toMatchObject({
+        id: "text-0",
+        providerMetadata: { google: { thoughtSignature: "tail_sig" } },
+      })
+    }),
+  )
+
   it.effect("replays unsigned Gemini 3 tool calls with the validator bypass sentinel", () =>
     Effect.gen(function* () {
       const prepared = yield* compileRequest(
@@ -721,7 +1074,7 @@ describe("Gemini route", () => {
           role: "model",
           parts: [
             {
-              functionCall: { id: undefined, name: "lookup", args: { query: "weather" } },
+              functionCall: { id: "tool_0", name: "lookup", args: { query: "weather" } },
               thoughtSignature: "skip_thought_signature_validator",
             },
           ],
@@ -731,7 +1084,7 @@ describe("Gemini route", () => {
           parts: [
             {
               functionResponse: {
-                id: undefined,
+                id: "tool_0",
                 name: "lookup",
                 response: { name: "lookup", content: "done" },
               },
@@ -767,15 +1120,15 @@ describe("Gemini route", () => {
           role: "model",
           parts: [
             {
-              functionCall: { id: undefined, name: "lookup", args: { query: "weather" } },
+              functionCall: { id: "tool_0", name: "lookup", args: { query: "weather" } },
               thoughtSignature: "parallel_signature",
             },
             {
-              functionCall: { id: undefined, name: "lookup", args: { query: "news" } },
+              functionCall: { id: "tool_1", name: "lookup", args: { query: "news" } },
               thoughtSignature: undefined,
             },
             {
-              functionCall: { id: undefined, name: "lookup", args: { query: "sports" } },
+              functionCall: { id: "tool_2", name: "lookup", args: { query: "sports" } },
               thoughtSignature: undefined,
             },
           ],
@@ -803,11 +1156,11 @@ describe("Gemini route", () => {
           role: "model",
           parts: [
             {
-              functionCall: { id: undefined, name: "lookup", args: { query: "weather" } },
+              functionCall: { id: "tool_0", name: "lookup", args: { query: "weather" } },
               thoughtSignature: "skip_thought_signature_validator",
             },
             {
-              functionCall: { id: undefined, name: "lookup", args: { query: "news" } },
+              functionCall: { id: "tool_1", name: "lookup", args: { query: "news" } },
               thoughtSignature: "skip_thought_signature_validator",
             },
           ],
@@ -845,21 +1198,17 @@ describe("Gemini route", () => {
         providerMetadata: { google: { promptTokenCount: 5, candidatesTokenCount: 1 } },
       })
 
-      expect(response.toolCalls).toEqual([
-        {
-          type: "tool-call",
-          id: "tool_0",
-          name: "lookup",
-          input: { query: "weather" },
-          providerExecuted: undefined,
-          providerMetadata: undefined,
-        },
-      ])
+      expect(response.toolCalls[0].id).toMatch(/^tool_[0-9a-zA-Z]+$/)
+      expect(response.toolCalls[0]).toMatchObject({
+        type: "tool-call",
+        name: "lookup",
+        input: { query: "weather" },
+      })
       expect(response.events).toEqual([
         { type: "step-start", index: 0 },
         {
           type: "tool-call",
-          id: "tool_0",
+          id: response.toolCalls[0].id,
           name: "lookup",
           input: { query: "weather" },
           providerExecuted: undefined,
@@ -902,7 +1251,8 @@ describe("Gemini route", () => {
         ),
       )
 
-      expect(response.toolCalls).toEqual([{ type: "tool-call", id: "tool_0", name: "ping", input: {} }])
+      expect(response.toolCalls[0].id).toMatch(/^tool_[0-9a-zA-Z]+$/)
+      expect(response.toolCalls).toMatchObject([{ type: "tool-call", name: "ping", input: {} }])
     }),
   )
 
@@ -942,7 +1292,7 @@ describe("Gemini route", () => {
             content: {
               role: "model",
               parts: [
-                { functionCall: { id: "tool_0", name: "lookup", args: { query: "weather" } } },
+                { functionCall: { id: "call_0", name: "lookup", args: { query: "weather" } } },
                 { functionCall: { name: "lookup", args: { query: "news" } } },
               ],
             },
@@ -956,16 +1306,19 @@ describe("Gemini route", () => {
         }),
       ).pipe(Effect.provide(fixedResponse(body)))
 
-      expect(response.toolCalls).toEqual([
-        {
-          type: "tool-call",
-          id: "tool_0",
-          name: "lookup",
-          input: { query: "weather" },
-          providerMetadata: { google: { functionCallId: "tool_0" } },
-        },
-        { type: "tool-call", id: "tool_1", name: "lookup", input: { query: "news" } },
-      ])
+      expect(response.toolCalls[0]).toMatchObject({
+        type: "tool-call",
+        id: "call_0",
+        name: "lookup",
+        input: { query: "weather" },
+      })
+      expect(response.toolCalls[1]).toMatchObject({
+        type: "tool-call",
+        name: "lookup",
+        input: { query: "news" },
+      })
+      expect(response.toolCalls[1].id).toMatch(/^tool_[0-9a-zA-Z]+$/)
+      expect(response.toolCalls[0].id).not.toBe(response.toolCalls[1].id)
       expect(response.events.at(-1)).toMatchObject({
         type: "finish",
         reason: { normalized: "tool-calls", raw: "STOP" },
@@ -973,6 +1326,62 @@ describe("Gemini route", () => {
     }),
   )
 
+  it.effect("replaces repeated supplier ids with fresh fallback ids", () =>
+    Effect.gen(function* () {
+      const body = sseEvents({
+        candidates: [
+          {
+            content: {
+              role: "model",
+              parts: [
+                { functionCall: { id: "dup_call", name: "lookup", args: { query: "weather" } } },
+                { functionCall: { id: "dup_call", name: "lookup", args: { query: "news" } } },
+              ],
+            },
+            finishReason: "STOP",
+          },
+        ],
+      })
+      const response = yield* LLMClient.generate(
+        LLMRequest.update(request, {
+          tools: [ToolDefinition.make({ name: "lookup", description: "Lookup data", inputSchema: { type: "object" } })],
+        }),
+      ).pipe(Effect.provide(fixedResponse(body)))
+
+      expect(response.toolCalls[0]).toMatchObject({
+        id: "dup_call",
+        providerMetadata: undefined,
+      })
+      expect(response.toolCalls[1].id).toMatch(/^tool_[0-9a-zA-Z]+$/)
+      expect(response.toolCalls[1].id).not.toBe(response.toolCalls[0].id)
+    }),
+  )
+
+  it.effect("assigns distinct unique fallback ids across separate requests", () =>
+    Effect.gen(function* () {
+      const body = sseEvents({
+        candidates: [
+          {
+            content: {
+              role: "model",
+              parts: [{ functionCall: { name: "lookup", args: { query: "weather" } } }],
+            },
+            finishReason: "STOP",
+          },
+        ],
+      })
+      const req = LLMRequest.update(request, {
+        tools: [ToolDefinition.make({ name: "lookup", description: "Lookup data", inputSchema: { type: "object" } })],
+      })
+      const first = yield* LLMClient.generate(req).pipe(Effect.provide(fixedResponse(body)))
+      const second = yield* LLMClient.generate(req).pipe(Effect.provide(fixedResponse(body)))
+
+      expect(first.toolCalls[0].id).toMatch(/^tool_[0-9a-zA-Z]+$/)
+      expect(second.toolCalls[0].id).toMatch(/^tool_[0-9a-zA-Z]+$/)
+      expect(first.toolCalls[0].id).not.toBe(second.toolCalls[0].id)
+    }),
+  )
+
   it.effect("maps length and content-filter finish reasons", () =>
     Effect.gen(function* () {
       const length = yield* LLMClient.generate(request).pipe(

packages/ai/test/provider/google-vertex.recorded.test.ts

@@ -0,0 +1,77 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+
+import { LLM, Message, ToolDefinition, ToolCallPart } from "../../src/index.js"
+import { GoogleVertex } from "../../src/providers.js"
+import { LLMClient } from "../../src/route.js"
+import { recordedTests } from "../recorded-test.js"
+
+const model = GoogleVertex.configure({
+  apiKey: process.env.GOOGLE_VERTEX_API_KEY ?? "fixture",
+}).model("gemini-3.5-flash")
+
+const lookupWeather = ToolDefinition.make({
+  name: "lookup_weather",
+  description: "Look up the current weather for a city",
+  inputSchema: { type: "object", properties: { city: { type: "string" } }, required: ["city"] },
+})
+
+const recorded = recordedTests({
+  prefix: "google-vertex",
+  provider: "google-vertex",
+  protocol: "gemini",
+  requires: ["GOOGLE_VERTEX_API_KEY"],
+})
+
+describe("Google Vertex Gemini recorded", () => {
+  recorded.effect("streams text", () =>
+    Effect.gen(function* () {
+      const response = yield* LLMClient.generate(
+        LLM.request({ model, prompt: "Reply with exactly one word: hello" }),
+      )
+
+      expect(response.text.toLowerCase()).toContain("hello")
+    }),
+  )
+
+  recorded.effect("calls a tool", () =>
+    Effect.gen(function* () {
+      const response = yield* LLMClient.generate(
+        LLM.request({
+          model,
+          prompt: "What is the weather in Paris? Use the lookup_weather tool.",
+          tools: [lookupWeather],
+        }),
+      )
+
+      const call = response.toolCalls.find((part) => part.name === "lookup_weather")
+      expect(call).toBeDefined()
+      expect(call?.input).toMatchObject({ city: "Paris" })
+    }),
+  )
+
+  recorded.effect("continues after a tool result", () =>
+    Effect.gen(function* () {
+      const response = yield* LLMClient.generate(
+        LLM.request({
+          model,
+          messages: [
+            Message.user("What is the weather in Paris?"),
+            Message.assistant([
+              ToolCallPart.make({ id: "call_paris_1", name: "lookup_weather", input: { city: "Paris" } }),
+            ]),
+            Message.tool({
+              id: "call_paris_1",
+              name: "lookup_weather",
+              result: "18C, light rain",
+              resultType: "text",
+            }),
+          ],
+          tools: [lookupWeather],
+        }),
+      )
+
+      expect(response.text.length).toBeGreaterThan(0)
+    }),
+  )
+})

packages/ai/test/provider/google-vertex.test.ts

@@ -1,7 +1,7 @@
 import { describe, expect } from "bun:test"
 import { Effect } from "effect"
 import { HttpClientRequest } from "effect/unstable/http"
-import { LLM } from "../../src/index.js"
+import { LLM, Message, ToolCallPart } from "../../src/index.js"
 import { GoogleVertex, GoogleVertexChat, GoogleVertexMessages, GoogleVertexResponses } from "../../src/providers.js"
 import { LLMClient } from "../../src/route.js"
 import { compileRequest } from "../../src/route/client.js"
@@ -75,6 +75,53 @@ describe("Google Vertex providers", () => {
     }),
   )
 
+  it.effect("strips function call ids Vertex does not accept from lowered bodies", () =>
+    Effect.gen(function* () {
+      const prepared = yield* compileRequest(
+        LLM.request({
+          model: GoogleVertex.configure({
+            accessToken: "vertex-token",
+            project: "vertex-project",
+          }).model("gemini-3.5-flash"),
+          messages: [
+            Message.assistant([
+              ToolCallPart.make({
+                id: "call_1",
+                name: "lookup",
+                input: { query: "weather" },
+                providerMetadata: { google: { functionCallId: "provider_call_1" } },
+              }),
+            ]),
+            Message.tool({
+              id: "call_1",
+              name: "lookup",
+              result: "sunny",
+              resultType: "text",
+              providerMetadata: { google: { functionCallId: "provider_call_1" } },
+            }),
+          ],
+        }),
+      )
+
+      expect(JSON.stringify(prepared.body.contents)).not.toContain('"id"')
+      expect(prepared.body.contents).toMatchObject([
+        { role: "model", parts: [{ functionCall: { id: undefined, name: "lookup", args: { query: "weather" } } }] },
+        {
+          role: "user",
+          parts: [
+            {
+              functionResponse: {
+                id: undefined,
+                name: "lookup",
+                response: { name: "lookup", content: "sunny" },
+              },
+            },
+          ],
+        },
+      ])
+    }),
+  )
+
   it.effect("projects Anthropic Messages onto the Vertex raw-predict API", () =>
     Effect.gen(function* () {
       const model = GoogleVertexMessages.configure({
@@ -96,7 +143,7 @@ describe("Google Vertex providers", () => {
                 "https://aiplatform.eu.rep.googleapis.com/v1/projects/vertex-project/locations/eu/publishers/anthropic/models/claude-sonnet-4-6:streamRawPredict",
               )
               expect(request.headers.get("authorization")).toBe("Bearer vertex-token")
-              expect(request.headers.get("anthropic-version")).toBeNull()
+              expect(request.headers.get("anthropic-version")).toBe("2023-06-01")
               const body = yield* Effect.promise(() => request.json())
               expect(body).toMatchObject({
                 anthropic_version: "vertex-2023-10-16",

packages/ai/test/provider/openai-compatible-responses.test.ts

@@ -93,7 +93,7 @@ describe("Open Responses-compatible route", () => {
     }),
   )
 
-  it.effect("omits OpenAI-only nullable phases from the Open Responses baseline", () =>
+  it.effect("preserves nullable phases in the forgiving Open Responses baseline", () =>
     Effect.gen(function* () {
       const model = configure({
         apiKey: "test-key",
@@ -113,7 +113,9 @@ describe("Open Responses-compatible route", () => {
       )
 
       expect(prepared.body).toMatchObject({
-        input: [{ type: "message", role: "assistant", content: [{ type: "output_text", text: "Unclassified." }] }],
+        input: [
+          { type: "message", role: "assistant", content: [{ type: "output_text", text: "Unclassified." }], phase: null },
+        ],
       })
     }),
   )

packages/ai/test/provider/openai-responses.test.ts

@@ -28,7 +28,7 @@ import * as Azure from "../../src/providers/azure.js"
 import * as OpenAI from "../../src/providers/openai.js"
 import * as XAI from "../../src/providers/xai.js"
 import * as OpenAIResponses from "../../src/protocols/openai-responses.js"
-import { OpenAIResponsesChannel } from "../../src/protocols/openai-responses-channel.js"
+import { OpenResponsesContinuation } from "../../src/protocols/open-responses-continuation.js"
 import * as ProviderShared from "../../src/protocols/shared.js"
 import { continuationRequest, nativeOpenAIResponsesContinuation } from "../continuation-scenarios.js"
 import { it } from "../lib/effect.js"
@@ -68,7 +68,7 @@ const baseChannelDriver = (message: string): WebSocketChannelDriver => ({
 
 const continuationDriver = (request: Readonly<Record<string, unknown>>) => {
   const message = ProviderShared.encodeJson(request)
-  return OpenAIResponsesChannel.driver({
+  return OpenResponsesContinuation.driver({
     id: "openai-responses",
     name: "OpenAI Responses",
     request,
@@ -691,6 +691,134 @@ describe("OpenAI Responses route", () => {
     }),
   )
 
+  it.effect("builds xAI WebSocket requests without OpenAI handshake headers", () =>
+    Effect.gen(function* () {
+      const deps = Layer.succeed(
+        RequestExecutor.Service,
+        RequestExecutor.Service.of({ execute: () => Effect.die("unexpected HTTP request") }),
+      )
+      const response = yield* LLMClient.generate(LLM.request({ model: xaiModel, prompt: "Say hello." }), {
+        webSocket: {
+          execute: (exchange) =>
+            Effect.gen(function* () {
+              expect(exchange.connect.url).toBe("wss://api.x.ai/v1/responses")
+              expect(exchange.connect.rotateAfterMs).toBe(24 * 60 * 1000)
+              expect(exchange.connect.headers.authorization).toBe("Bearer test")
+              expect(exchange.connect.headers["openai-beta"]).toBeUndefined()
+              expect(JSON.parse((yield* exchange.driver.create(undefined)).message)).toMatchObject({
+                type: "response.create",
+                model: "grok-4.5",
+                store: false,
+              })
+              return {
+                frames: Stream.make(
+                  JSON.stringify({ type: "response.created", response: { id: "resp_xai" } }),
+                  JSON.stringify({ type: "response.completed", response: { id: "resp_xai" } }),
+                ),
+                complete: Effect.void,
+              }
+            }),
+        },
+      }).pipe(Effect.provide(LLMClient.layer.pipe(Layer.provide(deps))))
+
+      expect(response.finishReason.normalized).toBe("stop")
+    }),
+  )
+
+  it.effect("builds Azure WebSocket requests with v1 URLs and bearer auth", () =>
+    Effect.gen(function* () {
+      const deps = Layer.succeed(
+        RequestExecutor.Service,
+        RequestExecutor.Service.of({ execute: () => Effect.die("unexpected HTTP request") }),
+      )
+      const cases = [
+        {
+          model: Azure.configure({ resourceName: "opencode-test", apiKey: "azure-key" }).responses("deployment"),
+          authorization: "Bearer azure-key",
+        },
+        {
+          model: Azure.configure({ resourceName: "opencode-test", auth: Auth.bearer("entra-token") }).responses(
+            "deployment",
+          ),
+          authorization: "Bearer entra-token",
+        },
+      ]
+
+      yield* Effect.forEach(cases, (item) =>
+        LLMClient.generate(LLM.request({ model: item.model, prompt: "Say hello." }), {
+          webSocket: {
+            execute: (exchange) =>
+              Effect.gen(function* () {
+                expect(exchange.connect.url).toBe("wss://opencode-test.openai.azure.com/openai/v1/responses")
+                expect(exchange.connect.rotateAfterMs).toBe(55 * 60 * 1000)
+                expect(exchange.connect.headers.authorization).toBe(item.authorization)
+                expect(exchange.connect.headers["api-key"]).toBeUndefined()
+                expect(exchange.connect.headers["openai-beta"]).toBeUndefined()
+                expect(JSON.parse((yield* exchange.driver.create(undefined)).message)).toMatchObject({
+                  type: "response.create",
+                  model: "deployment",
+                  store: false,
+                })
+                return {
+                  frames: Stream.make(
+                    JSON.stringify({ type: "response.created", response: { id: "resp_azure" } }),
+                    JSON.stringify({ type: "response.completed", response: { id: "resp_azure" } }),
+                  ),
+                  complete: Effect.void,
+                }
+              }),
+          },
+        }).pipe(Effect.provide(LLMClient.layer.pipe(Layer.provide(deps)))),
+      )
+    }),
+  )
+
+  it.effect("keeps unsupported Azure endpoints and API versions on HTTP", () =>
+    Effect.gen(function* () {
+      const cases = [
+        {
+          model: Azure.configure({
+            resourceName: "opencode-test",
+            apiKey: "azure-key",
+            apiVersion: "2025-04-01-preview",
+          }).responses("deployment"),
+          url: "https://opencode-test.openai.azure.com/openai/v1/responses?api-version=2025-04-01-preview",
+        },
+        {
+          model: Azure.configure({
+            resourceName: "opencode-test",
+            apiKey: "azure-key",
+            useDeploymentBasedUrls: true,
+          }).responses("deployment"),
+          url: "https://opencode-test.openai.azure.com/openai/deployments/deployment/responses?api-version=v1",
+        },
+        {
+          model: Azure.configure({ baseURL: "https://gateway.example/azure", apiKey: "azure-key" }).responses(
+            "deployment",
+          ),
+          url: "https://gateway.example/azure/responses",
+        },
+      ]
+
+      yield* Effect.forEach(cases, (item) =>
+        LLMClient.generate(LLM.request({ model: item.model, prompt: "Say hello." }), {
+          webSocket: { execute: () => Effect.die("unexpected WebSocket request") },
+        }).pipe(
+          Effect.provide(
+            dynamicResponse((input) =>
+              Effect.gen(function* () {
+                expect(input.request.url).toBe(item.url)
+                return input.respond(sseEvents({ type: "response.completed", response: {} }), {
+                  headers: { "content-type": "text/event-stream" },
+                })
+              }),
+            ),
+          ),
+        ),
+      )
+    }),
+  )
+
   it.effect("uses exactly one HTTP request when no WebSocket executor is supplied", () =>
     Effect.gen(function* () {
       const attempts = yield* Ref.make(0)
@@ -1145,7 +1273,7 @@ describe("OpenAI Responses route", () => {
         {
           type: "input_file",
           filename: "report.pdf",
-          file_data: "data:application/pdf;base64,JVBERi0xLjQ=",
+          file_data: "JVBERi0xLjQ=",
         },
       ])
     }),
@@ -1172,12 +1300,12 @@ describe("OpenAI Responses route", () => {
       )
 
       expect(expectToolOutput(prepared.body).output).toEqual([
-        { type: "input_file", filename: "report.pdf", file_data: dataUrl },
+        { type: "input_file", filename: "report.pdf", file_data: base64 },
       ])
     }),
   )
 
-  it.effect("uses xAI inline file encoding for PDF tool results", () =>
+  it.effect("uses standard inline file encoding for xAI PDF tool results", () =>
     Effect.gen(function* () {
       const prepared = yield* compileRequest(
         LLM.request({
@@ -1206,7 +1334,6 @@ describe("OpenAI Responses route", () => {
           type: "input_file",
           filename: "report.pdf",
           file_data: "JVBERi0xLjQ=",
-          mime_type: "application/pdf",
         },
       ])
     }),
@@ -1231,7 +1358,61 @@ describe("OpenAI Responses route", () => {
       )
 
       expect(expectToolOutput(prepared.body).output).toEqual([
-        { type: "input_file", filename: "file", file_data: "data:audio/mpeg;base64,AAECAw==" },
+        { type: "input_file", filename: "file", file_data: "AAECAw==" },
+      ])
+    }),
+  )
+
+  it.effect("lowers remote tool-result media URLs without base64 wrapping", () =>
+    Effect.gen(function* () {
+      const prepared = yield* compileRequest(
+        LLM.request({
+          model,
+          messages: [
+            Message.assistant([ToolCallPart.make({ id: "call_1", name: "fetch", input: {} })]),
+            Message.tool({
+              id: "call_1",
+              name: "fetch",
+              resultType: "content",
+              result: [
+                { type: "file", uri: "https://example.com/image.png", mime: "image/png" },
+                { type: "file", uri: "https://example.com/report.pdf", mime: "application/pdf", name: "report.pdf" },
+              ],
+            }),
+          ],
+        }),
+      )
+
+      expect(expectToolOutput(prepared.body).output).toEqual([
+        { type: "input_image", image_url: "https://example.com/image.png" },
+        { type: "input_file", filename: "report.pdf", file_url: "https://example.com/report.pdf" },
+      ])
+    }),
+  )
+
+  it.effect("lowers tool-result videos as input_video", () =>
+    Effect.gen(function* () {
+      const prepared = yield* compileRequest(
+        LLM.request({
+          model,
+          messages: [
+            Message.assistant([ToolCallPart.make({ id: "call_1", name: "record", input: {} })]),
+            Message.tool({
+              id: "call_1",
+              name: "record",
+              resultType: "content",
+              result: [
+                { type: "file", uri: "data:video/mp4;base64,AAECAw==", mime: "video/mp4" },
+                { type: "file", uri: "https://example.com/demo.mp4", mime: "video/mp4" },
+              ],
+            }),
+          ],
+        }),
+      )
+
+      expect(expectToolOutput(prepared.body).output).toEqual([
+        { type: "input_video", video_url: "data:video/mp4;base64,AAECAw==" },
+        { type: "input_video", video_url: "https://example.com/demo.mp4" },
       ])
     }),
   )
@@ -2584,7 +2765,7 @@ describe("OpenAI Responses route", () => {
             {
               type: "input_file",
               filename: "report.pdf",
-              file_data: "data:application/pdf;base64,JVBERi0xLjQ=",
+              file_data: "JVBERi0xLjQ=",
             },
           ],
         },
@@ -2592,7 +2773,7 @@ describe("OpenAI Responses route", () => {
     }),
   )
 
-  it.effect("uses xAI inline file encoding for user PDFs", () =>
+  it.effect("uses standard inline file encoding for xAI user PDFs", () =>
     Effect.gen(function* () {
       const prepared = yield* compileRequest(
         LLM.request({
@@ -2616,7 +2797,6 @@ describe("OpenAI Responses route", () => {
               type: "input_file",
               filename: "report.pdf",
               file_data: "JVBERi0xLjQ=",
-              mime_type: "application/pdf",
             },
           ],
         },
@@ -2641,7 +2821,7 @@ describe("OpenAI Responses route", () => {
             {
               type: "input_file",
               filename: "file",
-              file_data: "data:application/x-tar;base64,AAECAw==",
+              file_data: "AAECAw==",
             },
           ],
         },
@@ -2649,6 +2829,37 @@ describe("OpenAI Responses route", () => {
     }),
   )
 
+  it.effect("lowers remote user media URLs without base64 wrapping", () =>
+    Effect.gen(function* () {
+      const prepared = yield* compileRequest(
+        LLM.request({
+          model,
+          messages: [
+            Message.user([
+              { type: "media", mediaType: "image/png", data: "https://example.com/image.png" },
+              {
+                type: "media",
+                mediaType: "application/pdf",
+                data: "https://example.com/report.pdf",
+                filename: "report.pdf",
+              },
+            ]),
+          ],
+        }),
+      )
+
+      expect(prepared.body.input).toEqual([
+        {
+          role: "user",
+          content: [
+            { type: "input_image", image_url: "https://example.com/image.png" },
+            { type: "input_file", filename: "report.pdf", file_url: "https://example.com/report.pdf" },
+          ],
+        },
+      ])
+    }),
+  )
+
   it.effect("fails with a typed rate limit for provider error frames", () =>
     Effect.gen(function* () {
       const error = yield* LLMClient.generate(request).pipe(
@@ -2805,36 +3016,42 @@ describe("OpenAI Responses route", () => {
     }),
   )
 
-  it.effect("falls back to a stable default when error is null", () =>
+  it.effect("falls back to the raw payload when error is null", () =>
     Effect.gen(function* () {
       const error = yield* LLMClient.generate(request).pipe(
         Effect.provide(fixedResponse(sseEvents({ type: "error", error: null }))),
         Effect.flip,
       )
 
-      expect(error.reason).toMatchObject({ _tag: "UnknownProvider", message: "OpenAI Responses stream error" })
+      expect(error.reason).toMatchObject({ _tag: "UnknownProvider" })
+      expect(error.reason.message).toContain('"error":null')
+      expect(error.body).toBe(error.reason.message)
     }),
   )
 
-  it.effect("falls back to a stable default when both error and response are absent", () =>
+  it.effect("falls back to the raw payload when both error and response are absent", () =>
     Effect.gen(function* () {
       const error = yield* LLMClient.generate(request).pipe(
         Effect.provide(fixedResponse(sseEvents({ type: "error" }))),
         Effect.flip,
       )
 
-      expect(error.reason).toMatchObject({ _tag: "UnknownProvider", message: "OpenAI Responses stream error" })
+      expect(error.reason).toMatchObject({ _tag: "UnknownProvider" })
+      expect(error.reason.message).toContain('"type":"error"')
+      expect(error.body).toBe(error.reason.message)
     }),
   )
 
-  it.effect("falls back to a stable default when response.failed has no error payload", () =>
+  it.effect("keeps the raw response payload when response.failed has no error payload", () =>
     Effect.gen(function* () {
       const error = yield* LLMClient.generate(request).pipe(
         Effect.provide(fixedResponse(sseEvents({ type: "response.failed", response: { id: "resp_failed_3" } }))),
         Effect.flip,
       )
 
-      expect(error.reason).toMatchObject({ _tag: "UnknownProvider", message: "OpenAI Responses response failed" })
+      expect(error.reason).toMatchObject({ _tag: "UnknownProvider" })
+      expect(error.reason.message).toContain('"resp_failed_3"')
+      expect(error.body).toBe(error.reason.message)
     }),
   )
 

packages/ai/test/provider/pdf.recorded.test.ts

@@ -64,7 +64,7 @@ const targets: ReadonlyArray<{
     id: "xai",
     name: "xAI Grok 4.5",
     provider: "xai",
-    protocol: "openai-responses",
+    protocol: "xai-responses",
     requires: "XAI_API_KEY",
     filename: "verification.pdf",
     maxTokens: 40,

packages/ai/test/provider/xai-responses.test.ts

@@ -0,0 +1,77 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { LLM, LLMEvent } from "../../src/index.js"
+import { XAI } from "../../src/providers.js"
+import { OpenResponses } from "../../src/protocols/open-responses.js"
+import { OpenAIResponses } from "../../src/protocols/openai-responses.js"
+import { XAIResponses } from "../../src/protocols/xai-responses.js"
+import { LLMClient } from "../../src/route.js"
+import { compileRequest } from "../../src/route/client.js"
+import { it } from "../lib/effect.js"
+import { fixedResponse } from "../lib/http.js"
+import { sseEvents } from "../lib/sse.js"
+
+const model = XAI.configure({ apiKey: "test", baseURL: "https://api.x.ai/v1" }).responses("grok-4.6")
+
+describe("xAI Responses route", () => {
+  it.effect("extends the Open Responses baseline directly", () =>
+    Effect.gen(function* () {
+      expect(XAIResponses.protocol.body).toBe(OpenResponses.protocol.body)
+      expect(XAIResponses.protocol.body).not.toBe(OpenAIResponses.protocol.body)
+
+      const prepared = yield* compileRequest(LLM.request({ model, prompt: "Hello" }))
+      expect(prepared.protocol).toBe("xai-responses")
+    }),
+  )
+
+  it.effect("parses xAI reasoning text events", () =>
+    Effect.gen(function* () {
+      const response = yield* LLMClient.generate(LLM.request({ model, prompt: "Think" })).pipe(
+        Effect.provide(
+          fixedResponse(
+            sseEvents(
+              { type: "response.reasoning_text.delta", item_id: "reasoning_1", delta: "Considering." },
+              { type: "response.reasoning_text.done", item_id: "reasoning_1" },
+              {
+                type: "response.output_item.done",
+                item: { type: "reasoning", id: "reasoning_1", encrypted_content: "opaque" },
+              },
+              { type: "response.completed", response: { id: "response_1" } },
+            ),
+          ),
+        ),
+      )
+
+      expect(response.message.content.find((part) => part.type === "reasoning")).toMatchObject({
+        type: "reasoning",
+        text: "Considering.",
+        providerMetadata: { xai: { itemId: "reasoning_1", reasoningEncryptedContent: "opaque" } },
+      })
+    }),
+  )
+
+  it.effect("parses xAI hosted tool items", () =>
+    Effect.gen(function* () {
+      const response = yield* LLMClient.generate(LLM.request({ model, prompt: "Search X" })).pipe(
+        Effect.provide(
+          fixedResponse(
+            sseEvents(
+              {
+                type: "response.output_item.done",
+                item: { type: "x_search_call", id: "x_search_1", status: "completed", action: { query: "news" } },
+              },
+              { type: "response.completed", response: { id: "response_1" } },
+            ),
+          ),
+        ),
+      )
+
+      expect(response.events.find(LLMEvent.is.toolCall)).toMatchObject({
+        id: "x_search_1",
+        name: "x_search",
+        input: { query: "news" },
+        providerExecuted: true,
+      })
+    }),
+  )
+})

packages/ai/test/tool-runtime.test.ts

@@ -191,7 +191,7 @@ describe("LLMClient tools", () => {
         success: Schema.String,
         execute: () => Effect.succeed("hello"),
       })
-      const providerMetadata = { google: { functionCallId: "provider_call" } }
+      const providerMetadata = { google: { thoughtSignature: "provider_sig" } }
       const dispatched = yield* ToolRuntime.dispatch(
         { tool },
         LLMEvent.toolCall({ id: "call_1", name: "tool", input: {}, providerMetadata }),

packages/app/AGENTS.md

@@ -19,6 +19,12 @@
 
 - Always prefer `createStore` over multiple `createSignal` calls
 
+## Typography
+
+- Use `--line-height-compact` (`16px`) for `13px` compact UI text and `--line-height-base` (`20px`) for body text.
+- Do not use `leading-none`, `line-height: 1`, or a `13px` line height for normal text. Inter descenders clip inside truncation and overflow containers.
+- Keep control and row heights explicit. Fix font metrics directly rather than using transforms, negative margins, or clip-padding compensation.
+
 ## Localization
 
 - NEVER hardcode user-visible English strings in production code. ALWAYS use an i18n key for visible copy, placeholders, accessible labels, tooltips, menus, dialogs, toasts, empty states, and displayed errors.

packages/app/e2e/performance/timeline-stability/fixture.ts

@@ -259,6 +259,34 @@ export function event(
   return makeEvent(type, data)
 }
 
+export function compactionStarted(data: Extract<OpenCodeEvent, { type: "session.compaction.started" }>["data"]) {
+  return makeEvent("session.compaction.started", data)
+}
+
+export function compactionDelta(data: Extract<OpenCodeEvent, { type: "session.compaction.delta" }>["data"]) {
+  return makeEvent("session.compaction.delta", data)
+}
+
+export function compactionEnded(data: Extract<OpenCodeEvent, { type: "session.compaction.ended" }>["data"]) {
+  return makeEvent("session.compaction.ended", data)
+}
+
+export function compactionFailed(data: Extract<OpenCodeEvent, { type: "session.compaction.failed" }>["data"]) {
+  return makeEvent("session.compaction.failed", data)
+}
+
+export function toolInputStarted(data: Extract<OpenCodeEvent, { type: "session.tool.input.started" }>["data"]) {
+  return makeEvent("session.tool.input.started", data)
+}
+
+export function toolInputEnded(data: Extract<OpenCodeEvent, { type: "session.tool.input.ended" }>["data"]) {
+  return makeEvent("session.tool.input.ended", data)
+}
+
+export function toolCalled(data: Extract<OpenCodeEvent, { type: "session.tool.called" }>["data"]) {
+  return makeEvent("session.tool.called", data)
+}
+
 export function validateTimelineEvent(input: unknown): OpenCodeEvent {
   if (!input || typeof input !== "object") throw new Error("Timeline event must be an object")
   if (!("type" in input) || typeof input.type !== "string") throw new Error("Timeline event requires a type")

packages/app/e2e/performance/timeline-stability/scroll-interaction.spec.ts

@@ -1,4 +1,5 @@
 import { expect, test } from "@playwright/test"
+import { createTwoFilesPatch } from "diff"
 import {
   defineVisualRegions,
   reportVisualStability,
@@ -13,10 +14,63 @@ import {
   setupTimeline,
   shell,
   textPart,
+  toolPart,
   userMessage,
   type TimelineMessage,
 } from "./fixture"
 
+test("follows an expanded patch that arrives as the user reaches the bottom", async ({ page }) => {
+  const toolID = "prt_bottom_follow_patch"
+  const input = { patchText: "Update src/edit.ts" }
+  const timeline = await setupTimeline(page, {
+    messages: [
+      ...history(20),
+      userMessage(),
+      assistantMessage([textPart("prt_bottom_follow_text", "Working")], { completed: false }),
+    ],
+    settings: { editToolPartsExpanded: true },
+    reducedMotion: true,
+  })
+  const scroller = page.locator(".scroll-view__viewport", { has: page.locator("[data-timeline-row]") })
+  await scroller.evaluate((element) => {
+    element.scrollTop = Math.max(0, element.scrollHeight - element.clientHeight - 300)
+    element.dispatchEvent(new WheelEvent("wheel", { bubbles: true, cancelable: true, deltaY: 300 }))
+    element.scrollTop = element.scrollHeight
+  })
+  await expect
+    .poll(() => scroller.evaluate((element) => element.scrollHeight - element.clientHeight - element.scrollTop))
+    .toBeLessThanOrEqual(1)
+
+  await timeline.send(partUpdated(toolPart(toolID, "patch", "running", input)))
+  await timeline.send(
+    partUpdated(
+      toolPart(toolID, "patch", "completed", input, {
+        metadata: {
+          files: [
+            {
+              file: "src/edit.ts",
+              status: "modified",
+              patch: createTwoFilesPatch(
+                "a/src/edit.ts",
+                "b/src/edit.ts",
+                Array.from({ length: 40 }, (_, index) => `export const value${index} = ${index}\n`).join(""),
+                Array.from({ length: 40 }, (_, index) => `export const value${index} = ${index + 1}\n`).join(""),
+              ),
+              additions: 40,
+              deletions: 40,
+            },
+          ],
+        },
+      }),
+    ),
+  )
+
+  await timeline.waitForPart(toolID)
+  await expect
+    .poll(() => scroller.evaluate((element) => element.scrollHeight - element.clientHeight - element.scrollTop))
+    .toBeLessThanOrEqual(1)
+})
+
 test("does not reverse visible rows when the user wheels during shell remeasurement", async ({ page }, testInfo) => {
   const shellID = "prt_wheel_01_shell"
   const followingID = "prt_wheel_02_following"

packages/app/e2e/performance/timeline/first-navigation-benchmark.spec.ts

@@ -53,6 +53,37 @@ benchmark.describe("performance: first navigation paint", () => {
     expect(result.summary.unknownSamples).toBe(0)
   })
 
+  benchmark("opens a session from the new session page without a blank frame", async ({ page, report }) => {
+    await mockStressTimeline(page)
+    await installTimelineSettings(page)
+    await installStressSessionTabs(page, { draftID })
+    await page.goto("/")
+
+    const draftHref = stressDraftHref(draftID)
+    const draftTab = page.locator(`[data-slot="titlebar-tabs"] a[href="${draftHref}"]`)
+    await expect(draftTab).toHaveCount(1)
+    await draftTab.click()
+    await expect(page.locator('[data-component="new-session"]')).toBeVisible()
+
+    const href = stressSessionHref(fixture.targetID)
+    const sessionTab = page.locator(`[data-slot="titlebar-tabs"] a[href="${href}"]`)
+    await expect(sessionTab).toHaveCount(1)
+    const result = await measureFirstNavigation(page, {
+      href,
+      destinationPath: href,
+      sourceSelector: '[data-component="new-session"]',
+      destinationSelector: messageSelector(fixture.expected.targetMessageIDs.at(-1)!),
+      contentSelector,
+      navigate: async () => {
+        await sessionTab.click()
+        await expectSessionTitle(page, fixture.expected.targetTitle)
+      },
+    })
+    report(result)
+    expect(result.summary.blankSamples).toBe(0)
+    expect(result.summary.unknownSamples).toBe(0)
+  })
+
   benchmark("opens a child session without a blank frame", async ({ page, report }) => {
     await setup(page)
     const href = stressSessionHref(fixture.childID)

packages/app/e2e/performance/unit/mock-server.test.ts

@@ -5,9 +5,11 @@ import { mockOpenCodeServer } from "../../utils/mock-server"
 test("applies message latency after a list response gate is released", async () => {
   const events: string[] = []
   const gate = Promise.withResolvers<void>()
+  const started = Promise.withResolvers<void>()
   let handler: ((route: Route) => Promise<void>) | undefined
   const page = {
     addInitScript: () => Promise.resolve(),
+    on: () => page,
     route: (_url: string, callback: (route: Route) => Promise<void>) => {
       handler = callback
       return Promise.resolve()
@@ -21,6 +23,7 @@ test("applies message latency after a list response gate is released", async ()
     messageDelay: 25,
     beforeMessagesResponse: () => {
       events.push("before")
+      started.resolve()
       return gate.promise
     },
     onMessages: (request) => events.push(request.phase),
@@ -31,12 +34,18 @@ test("applies message latency after a list response gate is released", async ()
   })
 
   const response = handler!({
-    request: () => ({ url: () => "http://127.0.0.1:4096/api/session/session/message" }),
+    request: () => ({
+      url: () => "http://127.0.0.1:4096/api/session/session/message",
+      method: () => "GET",
+      headers: () => ({}),
+      postDataBuffer: () => null,
+    }),
     fulfill: () => {
       events.push("fulfill")
       return Promise.resolve()
     },
   } as unknown as Route)
+  await started.promise
   expect(events).toEqual(["start", "before"])
 
   const released = performance.now()
@@ -45,3 +54,42 @@ test("applies message latency after a list response gate is released", async ()
   expect(performance.now() - released).toBeGreaterThanOrEqual(20)
   expect(events).toEqual(["start", "before", "page", "end", "fulfill"])
 })
+
+test("routes requests through the HttpApi contract", async () => {
+  const connected = Promise.withResolvers<{ integrationID: string; body: unknown }>()
+  let handler: ((route: Route) => Promise<void>) | undefined
+  const page = {
+    addInitScript: () => Promise.resolve(),
+    on: () => page,
+    route: (_url: string, callback: (route: Route) => Promise<void>) => {
+      handler = callback
+      return Promise.resolve()
+    },
+  } as unknown as Page
+  await mockOpenCodeServer(page, {
+    provider: {},
+    directory: "C:/OpenCode",
+    project: {},
+    sessions: [],
+    pageMessages: () => ({ items: [] }),
+    onConnectKey: connected.resolve,
+  })
+
+  const body = Buffer.from(JSON.stringify({ key: "secret" }))
+  let status: number | undefined
+  await handler!({
+    request: () => ({
+      url: () => "http://127.0.0.1:4096/api/integration/anthropic/connect/key",
+      method: () => "POST",
+      headers: () => ({ "content-type": "application/json" }),
+      postDataBuffer: () => body,
+    }),
+    fulfill: (response: Parameters<Route["fulfill"]>[0]) => {
+      status = response?.status
+      return Promise.resolve()
+    },
+  } as unknown as Route)
+
+  expect(status).toBe(204)
+  expect(await connected.promise).toEqual({ integrationID: "anthropic", body: { key: "secret" } })
+})

packages/app/e2e/regression/open-file-expand-folder.spec.ts

@@ -60,7 +60,7 @@ test("expands a folder whose path has a trailing Windows separator", async ({ pa
       if (path) return []
       return [
         {
-          name: "frontend",
+          name: "",
           path: "frontend\\",
           absolute: `${directory}/frontend`,
           type: "directory" as const,
@@ -116,6 +116,7 @@ test("expands a folder whose path has a trailing Windows separator", async ({ pa
 
   const frontendRow = panel.locator('[data-slot="file-tree-v2-row"][data-path="frontend"]')
   await expect(frontendRow).toBeVisible()
+  await expect(frontendRow.getByText("frontend", { exact: true })).toBeVisible()
   await expect(frontendRow).toHaveAttribute("aria-expanded", "false")
   await frontendRow.click()
   await expect(frontendRow).toHaveAttribute("aria-expanded", "true")

packages/app/e2e/regression/remote-session-settings.spec.ts

@@ -22,7 +22,7 @@ test("session settings use the remote server context", async ({ page }) => {
   await expect(page.getByRole("heading", { name: sessionB.title, exact: true })).toBeVisible()
   await page.keyboard.press("Control+,")
 
-  const dialog = page.locator(".settings-v2-dialog")
+  const dialog = page.locator(".settings-dialog")
   const autoAccept = dialog.locator('[data-action="settings-auto-accept-permissions"]')
   const input = autoAccept.getByRole("switch")
   await expect(autoAccept).toBeVisible()
@@ -63,7 +63,7 @@ test("auto-accept responds for an unfocused server session", async ({ page }) =>
   await page.goto(`/server/${base64Encode(serverA)}/session/${sessionA.id}`)
   await expect(page.getByRole("heading", { name: sessionA.title, exact: true })).toBeVisible()
   await page.keyboard.press("Control+,")
-  const autoAccept = page.locator(".settings-v2-dialog").locator('[data-action="settings-auto-accept-permissions"]')
+  const autoAccept = page.locator(".settings-dialog").locator('[data-action="settings-auto-accept-permissions"]')
   await autoAccept.locator('[data-slot="switch-control"]').click()
   await expect(autoAccept.getByRole("switch")).toBeChecked()
   await expect

packages/app/e2e/regression/review-line-comment.spec.ts

@@ -45,21 +45,17 @@ test("opens the comment editor for a line number range", async ({ page }) => {
   await expect(review.locator('[data-slot="line-comment-editor-label"]')).toHaveText("Commenting on lines 1-3")
 })
 
-test("shows a comment button when a line number is hovered", async ({ page }) => {
+test("shows a comment button when a diff line is hovered", async ({ page }) => {
   const review = page.locator('[data-component="session-review"]')
-  const lineNumber = review.locator('[data-column-number="1"]').last()
-  await expectAppVisible(lineNumber)
+  const line = review.getByText("export const first = 1", { exact: true })
+  await expectAppVisible(line)
 
-  const comment = review.getByRole("button", { name: "Comment", exact: true })
-  await expect(async () => {
-    await lineNumber.hover()
-    await expect(lineNumber).toHaveAttribute("data-hovered", "")
-    await expect(comment).toHaveCount(1)
-    await expect(comment).toHaveCSS("pointer-events", "auto")
-    await comment.focus()
-    await expect(comment).toBeFocused()
-  }).toPass({ timeout: 10_000 })
-  await comment.press("Enter")
+  const comment = review.getByRole("button", { name: "Comment", exact: true, includeHidden: true })
+  await expect(comment).toHaveCount(1)
+  await line.dispatchEvent("pointermove", { pointerType: "mouse", bubbles: true, composed: true })
+  await expect(comment).toBeVisible()
+  await expect(comment).toHaveCSS("pointer-events", "auto")
+  await comment.dispatchEvent("click")
   await expect(review.getByRole("textbox")).toBeVisible()
   await expect(review.locator('[data-slot="line-comment-editor-label"]')).toHaveText("Commenting on line 1")
 })

packages/app/e2e/regression/review-terminal-bottom.spec.ts

@@ -18,7 +18,7 @@ const branchDiffs = [
   ),
 ]
 
-test("keeps the review tree and terminal sized when both panels are open", async ({ page }) => {
+test("uses side placement by default and supports the terminal across the bottom", async ({ page }) => {
   test.setTimeout(120_000)
   await page.setViewportSize({ width: 1400, height: 900 })
   await mockOpenCodeServer(page, {
@@ -27,7 +27,7 @@ test("keeps the review tree and terminal sized when both panels are open", async
       id: projectID,
       worktree: directory,
       vcs: "git",
-      name: "review-terminal-stacked",
+      name: "review-terminal-bottom",
       time: { created: 1700000000000, updated: 1700000000000 },
       sandboxes: [],
     },
@@ -45,7 +45,7 @@ test("keeps the review tree and terminal sized when both panels are open", async
     sessions: [
       {
         id: sessionID,
-        slug: "review-terminal-stacked",
+        slug: "review-terminal-bottom",
         projectID,
         directory,
         title,
@@ -138,7 +138,22 @@ test("keeps the review tree and terminal sized when both panels are open", async
   await page.keyboard.press("Control+Backquote")
   await expect(page.locator("#terminal-panel")).toBeVisible()
   await expectTree(page, 2_773, "action.yml")
-  await expectStackGeometry(page)
+  await expectSideGeometry(page)
+
+  await page.evaluate(() => {
+    const settings = JSON.parse(localStorage.getItem("settings.v3") ?? "{}")
+    localStorage.setItem(
+      "settings.v3",
+      JSON.stringify({ ...settings, general: { ...settings.general, terminalPlacement: "bottom" } }),
+    )
+  })
+  await page.reload()
+  await expectSessionReady(page, { server, sessionID, title })
+  await expect(page.locator("#review-panel")).toBeVisible()
+  await page.keyboard.press("Control+Backquote")
+  await expect(page.locator("#terminal-panel")).toBeVisible()
+  await expectTree(page, 2_773, "action.yml")
+  await expectBottomGeometry(page)
 })
 
 async function expectTree(page: Page, total: number, file: string) {
@@ -163,26 +178,84 @@ async function expectMountedTree(page: Page, total: number) {
   expect(state.rows).toBeLessThanOrEqual(60)
 }
 
-async function expectStackGeometry(page: Page) {
+async function expectSideGeometry(page: Page) {
+  await expectPanelGap(page, 8)
+  const geometry = await page.evaluate(() => {
+    const review = document.querySelector<HTMLElement>("#review-panel")!.getBoundingClientRect()
+    const terminal = document.querySelector<HTMLElement>("#terminal-panel")!.getBoundingClientRect()
+    return {
+      reviewLeft: review.left,
+      reviewRight: review.right,
+      terminalLeft: terminal.left,
+      terminalRight: terminal.right,
+      terminalTop: terminal.top,
+      terminalBottom: terminal.bottom,
+      reviewTop: review.top,
+      reviewBottom: review.bottom,
+    }
+  })
+  expect(Math.abs(geometry.terminalLeft - geometry.reviewLeft)).toBeLessThanOrEqual(1)
+  expect(Math.abs(geometry.terminalRight - geometry.reviewRight)).toBeLessThanOrEqual(1)
+  expect(geometry.terminalTop).toBeGreaterThan(geometry.reviewTop)
+  expect(geometry.terminalTop - geometry.reviewBottom).toBeGreaterThanOrEqual(7)
+  expect(geometry.terminalTop - geometry.reviewBottom).toBeLessThanOrEqual(9)
+}
+
+async function expectBottomGeometry(page: Page) {
+  await expectPanelGap(page, 8)
   const geometry = await page.evaluate(() => {
     const review = document.querySelector<HTMLElement>("#review-panel")!
     const terminal = document.querySelector<HTMLElement>("#terminal-panel")!
+    const terminalRect = terminal.getBoundingClientRect()
     const reviewParent = review.parentElement!.getBoundingClientRect()
     const terminalParent = terminal.parentElement!.getBoundingClientRect()
     const sidebar = review.querySelector<HTMLElement>('[data-slot="session-review-v2-sidebar"]')!
     return {
       review: review.getBoundingClientRect().height,
+      reviewBottom: review.getBoundingClientRect().bottom,
       reviewParent: reviewParent.height,
-      terminal: terminal.getBoundingClientRect().height,
+      terminal: terminalRect.height,
+      terminalLeft: terminalRect.left,
+      terminalRight: terminalRect.right,
+      terminalTop: terminalRect.top,
       terminalParent: terminalParent.height,
       sidebar: sidebar.getBoundingClientRect().width,
+      viewport: window.innerWidth,
     }
   })
   expect(Math.abs(geometry.review - geometry.reviewParent)).toBeLessThanOrEqual(1)
   expect(Math.abs(geometry.terminal - geometry.terminalParent)).toBeLessThanOrEqual(1)
+  expect(geometry.terminalTop - geometry.reviewBottom).toBeGreaterThanOrEqual(7)
+  expect(geometry.terminalTop - geometry.reviewBottom).toBeLessThanOrEqual(9)
+  expect(geometry.terminalLeft).toBeLessThanOrEqual(9)
+  expect(geometry.terminalRight).toBeGreaterThanOrEqual(geometry.viewport - 9)
   expect(geometry.sidebar).toBeGreaterThanOrEqual(240)
 }
 
+async function expectPanelGap(page: Page, expected: number) {
+  await expect
+    .poll(() => {
+      return page.evaluate(() => {
+        const review = document.querySelector<HTMLElement>("#review-panel")?.getBoundingClientRect()
+        const terminal = document.querySelector<HTMLElement>("#terminal-panel")?.getBoundingClientRect()
+        if (!review || !terminal) return Number.NEGATIVE_INFINITY
+        const gap = terminal.top - review.bottom
+        return gap
+      })
+    })
+    .toBeGreaterThanOrEqual(expected - 1)
+  await expect
+    .poll(() => {
+      return page.evaluate(() => {
+        const review = document.querySelector<HTMLElement>("#review-panel")?.getBoundingClientRect()
+        const terminal = document.querySelector<HTMLElement>("#terminal-panel")?.getBoundingClientRect()
+        if (!review || !terminal) return Number.POSITIVE_INFINITY
+        return terminal.top - review.bottom
+      })
+    })
+    .toBeLessThanOrEqual(expected + 1)
+}
+
 function base64Encode(value: string) {
   return Buffer.from(value, "utf8").toString("base64").replace(/\+/g, "-").replace(/\//g, "_").replace(/=/g, "")
 }

packages/app/e2e/regression/server-dialog-focus.spec.ts

@@ -0,0 +1,48 @@
+import { expect, test, type Route } from "@playwright/test"
+
+const server = "http://127.0.0.1:4097"
+
+test("nested server dialog keeps focus inside the top layer", async ({ page }) => {
+  await page.addInitScript((server) => {
+    localStorage.setItem("opencode.global.dat:server", JSON.stringify({ list: [server] }))
+  }, server)
+  await page.route("**/*", async (route) => {
+    const url = new URL(route.request().url())
+    if (url.origin !== server) return route.fallback()
+    if (url.pathname === "/api/event") {
+      return route.fulfill({
+        status: 200,
+        contentType: "text/event-stream",
+        body: 'data: {"id":"evt_connected","type":"server.connected","data":{}}\n\n',
+      })
+    }
+    if (url.pathname === "/api/global/health" || url.pathname === "/api/health") {
+      return json(route, { healthy: true, version: "2.0.0" })
+    }
+    return json(route, {})
+  })
+
+  await page.goto("/")
+  await page.keyboard.press("Control+,")
+  const settings = page.locator(".settings-dialog")
+  await expect(settings).toBeVisible()
+  await settings.getByRole("tab", { name: "Servers" }).click()
+  await settings.getByRole("button", { name: "Add server" }).click()
+
+  const editor = page.getByRole("dialog", { name: "Add server" })
+  await expect(editor.getByPlaceholder("http://localhost:4096")).toBeFocused()
+  const username = editor.getByPlaceholder("username")
+  const password = editor.getByPlaceholder("password")
+  await username.click()
+  await expect(username).toBeFocused()
+  await username.fill("kit")
+  await expect(username).toHaveValue("kit")
+  await page.keyboard.press("Tab")
+  await expect(password).toBeFocused()
+  await password.fill("secret")
+  await expect(password).toHaveValue("secret")
+})
+
+function json(route: Route, body: unknown, status = 200) {
+  return route.fulfill({ status, contentType: "application/json", body: JSON.stringify(body) })
+}

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

@@ -99,7 +99,7 @@ test.describe("regression: session timeline local row state", () => {
     await wrapper.evaluate((element) => {
       ;(element as HTMLElement).dataset.regressionMarker = "before-stream"
     })
-    await wrapper.locator('[data-slot="collapsible-trigger"]').first().click()
+    await wrapper.locator('[data-scope="apply-patch"] button').click()
     await expectExpanded(wrapper, false)
 
     events.push(...textEvents())
@@ -139,7 +139,7 @@ test.describe("regression: session timeline local row state", () => {
     expect(siblingProbe).toEqual({
       fileMarker: "before",
       frameMarker: "before",
-      rowKey: `assistant-part:${userMessageID}:part:${assistantMessageID}:${editPartID}`,
+      rowKey: `assistant-part:part:${assistantMessageID}:${editPartID}`,
       rowMarker: "before",
       shadowRoots: 0,
       toolMarker: "before",
@@ -179,8 +179,8 @@ test.describe("regression: session timeline local row state", () => {
     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()
+    const trigger = wrapper.locator('[data-component="sticky-accordion-header"]')
+    const diff = wrapper.locator('[data-component="apply-patch-file-diff"]').first()
     await expectAppVisible(diff)
     await expect.poll(() => wrapper.evaluate((element) => element.getBoundingClientRect().height)).toBeGreaterThan(500)
     const samples = await wrapper.evaluate(async (element) => {
@@ -190,8 +190,8 @@ test.describe("regression: session timeline local row state", () => {
       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"]')!
+        const trigger = element.querySelector<HTMLElement>('[data-component="sticky-accordion-header"]')!
+        const diff = element.querySelector<HTMLElement>('[data-component="apply-patch-file-diff"]')!
         result.push({
           offset,
           trigger: trigger.getBoundingClientRect().y,
@@ -202,7 +202,7 @@ test.describe("regression: session timeline local row state", () => {
       return result
     })
 
-    expect(samples[0]!.trigger).toBeLessThan(samples[0]!.diff)
+    expect(samples[0]!.trigger).toBeGreaterThanOrEqual(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)
   })
@@ -234,7 +234,9 @@ async function readToolState(page: Page) {
     .evaluate(
       (element, textPartID) => ({
         expanded: (() => {
-          const trigger = element.querySelector('[data-slot="collapsible-trigger"]')
+          const trigger =
+            element.querySelector('[data-scope="apply-patch"] button') ??
+            element.querySelector('[data-slot="collapsible-trigger"]')
           const aria = trigger?.getAttribute("aria-expanded")
           if (aria === "true") return true
           if (aria === "false") return false
@@ -409,7 +411,9 @@ function eventValue<Type extends OpenCodeEvent["type"]>(
 }
 
 function readExpanded(element: Element) {
-  const trigger = element.querySelector('[data-slot="collapsible-trigger"]')
+  const trigger =
+    element.querySelector('[data-scope="apply-patch"] button') ??
+    element.querySelector('[data-slot="collapsible-trigger"]')
   const aria = trigger?.getAttribute("aria-expanded")
   if (aria === "true") return true
   if (aria === "false") return false

packages/app/e2e/regression/session-timeline-file-projection.spec.ts

@@ -1,5 +1,12 @@
 import { expect, test } from "@playwright/test"
-import { assistantMessage, setupTimeline, toolPart, userMessage } from "../performance/timeline-stability/fixture"
+import { createTwoFilesPatch } from "diff"
+import {
+  assistantMessage,
+  setupTimeline,
+  toolPart,
+  userMessage,
+  userText,
+} from "../performance/timeline-stability/fixture"
 
 test("renders completed write content", async ({ page }) => {
   const id = "prt_file_projection_write"
@@ -47,5 +54,144 @@ test("renders a completed single-file patch", async ({ page }) => {
     settings: { editToolPartsExpanded: true },
   })
 
-  await expect(page.locator(`[data-timeline-part-id="${id}"] [data-component="apply-patch-file-diff"]`)).toBeVisible()
+  const wrapper = page.locator(`[data-timeline-part-id="${id}"]`)
+  const file = wrapper.locator('[data-scope="apply-patch"]')
+  const scroller = page.locator(".scroll-view__viewport", { has: page.locator("[data-timeline-row]") })
+  await expect(file.getByRole("button")).toHaveAttribute("aria-expanded", "false")
+  await expect(wrapper.locator('[data-component="apply-patch-file-diff"]')).toHaveCount(0)
+  await file.getByRole("button").click()
+  await expect(wrapper.locator('[data-component="apply-patch-file-diff"]')).toBeVisible()
+  await expect
+    .poll(() => scroller.evaluate((element) => element.scrollHeight - element.clientHeight - element.scrollTop))
+    .toBeLessThanOrEqual(1)
+
+  await file.getByRole("button").click()
+  await expect(wrapper.locator('[data-component="apply-patch-file-diff"]')).toHaveCount(0)
+  await expect
+    .poll(() => scroller.evaluate((element) => element.scrollHeight - element.clientHeight - element.scrollTop))
+    .toBeLessThanOrEqual(1)
+
+  await file.getByRole("button").click()
+  await expect(wrapper.locator('[data-component="apply-patch-file-diff"]')).toBeVisible()
+  await expect
+    .poll(() => scroller.evaluate((element) => element.scrollHeight - element.clientHeight - element.scrollTop))
+    .toBeLessThanOrEqual(1)
+})
+
+test("keeps an expanded file diff header at the same viewport position", async ({ page }) => {
+  const id = "prt_file_projection_anchored_patch"
+  const before = Array.from({ length: 80 }, (_, index) => `export const value${index} = ${index}\n`).join("")
+  const after = before.replaceAll(" = ", " = compute(").replaceAll("\n", ")\n")
+  await setupTimeline(page, {
+    messages: [
+      userMessage([userText("Preceding context ".repeat(120))]),
+      assistantMessage([
+        toolPart(
+          id,
+          "patch",
+          "completed",
+          { patchText: "Update src/anchored.ts" },
+          {
+            metadata: {
+              files: [
+                {
+                  file: "src/anchored.ts",
+                  status: "modified",
+                  patch: createTwoFilesPatch("a/src/anchored.ts", "b/src/anchored.ts", before, after),
+                  additions: 80,
+                  deletions: 80,
+                },
+              ],
+            },
+          },
+        ),
+      ]),
+    ],
+    viewport: { width: 1200, height: 600 },
+  })
+
+  const scroller = page.locator(".scroll-view__viewport", { has: page.locator("[data-timeline-row]") })
+  const wrapper = page.locator(`[data-timeline-part-id="${id}"]`)
+  const row = page.locator("[data-timeline-key]", { has: wrapper })
+  const trigger = wrapper.getByRole("button")
+  await expect
+    .poll(() =>
+      row.evaluate((element) => {
+        const measured = element.querySelector<HTMLElement>("[data-index]")
+        return measured
+          ? Math.abs(element.getBoundingClientRect().height - measured.getBoundingClientRect().height)
+          : Number.POSITIVE_INFINITY
+      }),
+    )
+    .toBeLessThanOrEqual(1)
+  await expect
+    .poll(() => scroller.evaluate((element) => element.scrollHeight - element.clientHeight))
+    .toBeGreaterThan(1)
+  await scroller.evaluate((element) => {
+    element.scrollTop = element.scrollHeight - element.clientHeight - 0.25
+  })
+  await expect(trigger).toBeInViewport()
+  await expect
+    .poll(() => scroller.evaluate((element) => element.scrollHeight - element.clientHeight - element.scrollTop))
+    .toBeLessThanOrEqual(0.5)
+  const bottomScrollTop = await scroller.evaluate((element) => element.scrollTop)
+  await scroller.hover()
+  await page.mouse.wheel(0, -20)
+  await expect
+    .poll(() => scroller.evaluate((element, bottom) => bottom - element.scrollTop, bottomScrollTop))
+    .toBeGreaterThan(0)
+  const y = await trigger.evaluate((element) => element.getBoundingClientRect().y)
+  const collapsedHeight = await row.evaluate((element) => element.getBoundingClientRect().height)
+  await trigger.click()
+  await expect(wrapper.locator('[data-component="apply-patch-file-diff"]')).toBeVisible()
+  await expect
+    .poll(() =>
+      row.evaluate((element, collapsed) => {
+        const measured = element.querySelector<HTMLElement>("[data-index]")
+        const allocatedHeight = element.getBoundingClientRect().height
+        return {
+          grew: allocatedHeight > collapsed + 1,
+          measured: measured ? Math.abs(allocatedHeight - measured.getBoundingClientRect().height) <= 1 : false,
+        }
+      }, collapsedHeight),
+    )
+    .toEqual({ grew: true, measured: true })
+  await expect
+    .poll(() => trigger.evaluate((element, initialY) => Math.abs(element.getBoundingClientRect().y - initialY), y))
+    .toBeLessThanOrEqual(5)
+
+  const scrollTop = await scroller.evaluate((element) => element.scrollTop)
+  await scroller.hover()
+  await page.mouse.wheel(0, 200)
+  await expect
+    .poll(() => scroller.evaluate((element, initial) => element.scrollTop - initial, scrollTop))
+    .toBeGreaterThan(50)
+  const scrolled = await scroller.evaluate((element, initial) => element.scrollTop - initial, scrollTop)
+  expect(scrolled).toBeLessThan(400)
+
+  const expandedY = await trigger.evaluate((element) => element.getBoundingClientRect().y)
+  await trigger.click()
+  await expect(wrapper.locator('[data-component="apply-patch-file-diff"]')).toHaveCount(0)
+  await expect
+    .poll(() =>
+      scroller.evaluate((element) => Math.abs(element.scrollHeight - element.clientHeight - element.scrollTop)),
+    )
+    .toBeLessThanOrEqual(1)
+  await expect.poll(() => trigger.evaluate((element) => element.getBoundingClientRect().y)).toBeGreaterThan(expandedY)
+
+  await trigger.click()
+  await expect(wrapper.locator('[data-component="apply-patch-file-diff"]')).toBeVisible()
+  await expect
+    .poll(() =>
+      row.evaluate((element) => {
+        const measured = element.querySelector<HTMLElement>("[data-index]")
+        return measured
+          ? Math.abs(element.getBoundingClientRect().height - measured.getBoundingClientRect().height)
+          : Number.POSITIVE_INFINITY
+      }),
+    )
+    .toBeLessThanOrEqual(1)
+  await expect
+    .poll(() => scroller.evaluate((element) => element.scrollHeight - element.clientHeight - element.scrollTop))
+    .toBeLessThanOrEqual(1)
 })

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

@@ -2,7 +2,7 @@ import { expect, test } from "@playwright/test"
 import { assistantMessage, setupTimeline, toolPart, userMessage } from "../performance/timeline-stability/fixture"
 import { createTwoFilesPatch } from "diff"
 
-test("preserves nested patch file state through outer collapse and reopen", async ({ page }) => {
+test("keeps patch file disclosures independent", async ({ page }) => {
   const patchID = "prt_nested_patch"
   const files = [patchFile("src/a.ts", "modified"), patchFile("src/b.ts", "added"), patchFile("src/old.ts", "deleted")]
   await setupTimeline(page, {
@@ -21,15 +21,17 @@ test("preserves nested patch file state through outer collapse and reopen", asyn
     settings: { editToolPartsExpanded: true },
   })
   const wrapper = page.locator(`[data-timeline-part-id="${patchID}"]`)
-  const outer = wrapper.locator('[data-slot="collapsible-trigger"]').first()
+  const modified = wrapper.locator('[data-scope="apply-patch"] [data-type="update"]')
   const deleted = wrapper.locator('[data-scope="apply-patch"] [data-type="delete"]')
+  await expect(wrapper.locator('[data-scope="apply-patch"] [aria-expanded="false"]')).toHaveCount(3)
   await deleted.getByRole("button").click()
   await expect(deleted.getByRole("button")).toHaveAttribute("aria-expanded", "true")
-  await outer.click()
-  await expect(outer).toHaveAttribute("aria-expanded", "false")
-  await outer.click()
-  await expect(outer).toHaveAttribute("aria-expanded", "true")
-  await expect(deleted.getByRole("button")).toHaveAttribute("aria-expanded", "true")
+  await expect(modified.getByRole("button")).toHaveAttribute("aria-expanded", "false")
+  await modified.getByRole("button").click()
+  await expect(modified.getByRole("button")).toHaveAttribute("aria-expanded", "true")
+  await deleted.getByRole("button").click()
+  await expect(deleted.getByRole("button")).toHaveAttribute("aria-expanded", "false")
+  await expect(modified.getByRole("button")).toHaveAttribute("aria-expanded", "true")
 })
 
 function patchFile(file: string, status: "added" | "modified" | "deleted") {

packages/app/e2e/regression/session-timeline-history-root.spec.ts

@@ -17,7 +17,7 @@ import { mockOpenCodeServer } from "../utils/mock-server"
 import { installSseTransport } from "../utils/sse-transport"
 import { expectSessionTitle } from "../utils/waits"
 
-const messagePageSize = 200
+const messagePageSize = 20
 const server = `http://${process.env.PLAYWRIGHT_SERVER_HOST ?? "127.0.0.1"}:${process.env.PLAYWRIGHT_SERVER_PORT ?? "4096"}`
 const messages = Array.from({ length: messagePageSize / 2 + 1 }, (_, index) => {
   const id = `msg_${String(index + 1001).padStart(4, "0")}_history_root_user`

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

@@ -1,5 +1,6 @@
 import { expect, test } from "@playwright/test"
 import {
+  assistantID,
   assistantMessage,
   completedAssistantInfo,
   messageUpdated,
@@ -8,9 +9,13 @@ import {
   renderedPartID,
   setupTimeline,
   shell,
+  sessionID,
   status,
   stepStarted,
   textPart,
+  toolCalled,
+  toolInputEnded,
+  toolInputStarted,
   userMessage,
 } from "../performance/timeline-stability/fixture"
 
@@ -34,7 +39,56 @@ for (const expanded of [false, true]) {
   })
 }
 
-test("shows and expands a running shell command without shimmering it", async ({ page }) => {
+test("transitions a streaming shell from writing through command execution", async ({ page }) => {
+  const id = "prt_shell_streaming_input"
+  const command = "printf ready"
+  const timeline = await setupTimeline(page, {
+    messages: [userMessage(), assistantMessage([], { completed: false })],
+  })
+  await timeline.send(toolInputStarted({ sessionID, assistantMessageID: assistantID, id, name: "shell" }))
+
+  const tool = page.locator(`[data-timeline-part-id="${id}"]`)
+  const title = tool.locator('[data-slot="basic-tool-tool-title"]')
+  const titleShimmer = title.locator('[data-component="text-shimmer"]')
+  const subtitle = tool.locator('[data-slot="basic-tool-tool-subtitle"]')
+  await expect(titleShimmer).toHaveAttribute("aria-label", "Shell")
+  await expect(titleShimmer).toHaveAttribute("data-active", "true")
+  await expect(subtitle).toHaveText("Writing command...")
+  await expect(subtitle.locator('[data-component="text-shimmer"]')).toHaveCount(0)
+  await expect(tool.locator('[data-component="shell-submessage"]')).toHaveCount(0)
+  await expect(tool.locator('[data-slot="collapsible-trigger"]')).toHaveCSS("height", "28px")
+  await expect(tool.locator('[data-component="tool-trigger"]')).toHaveCSS("gap", "6px")
+  await expect(title).toHaveCSS("font-size", "13px")
+  await expect(title).toHaveCSS("font-family", "Inter, sans-serif")
+  await expect(title).toHaveCSS("font-weight", "530")
+  await expect(title).toHaveCSS("line-height", "16px")
+  await expect(title).toHaveCSS("color", "rgb(22, 22, 22)")
+  await expect(subtitle).toHaveCSS("font-size", "13px")
+  await expect(subtitle).toHaveCSS("font-family", "Inter, sans-serif")
+  await expect(subtitle).toHaveCSS("font-weight", "440")
+  await expect(subtitle).toHaveCSS("line-height", "16px")
+  await expect(subtitle).toHaveCSS("color", "rgb(92, 92, 92)")
+
+  const input = JSON.stringify({ command })
+  await timeline.send(toolInputEnded({ sessionID, assistantMessageID: assistantID, id, text: input }))
+  await expect(titleShimmer).toHaveAttribute("data-active", "true")
+  await expect(subtitle).toHaveText(command)
+  await expect(tool).not.toContainText("Writing command...")
+
+  await timeline.send(
+    toolCalled({
+      sessionID,
+      assistantMessageID: assistantID,
+      id,
+      input: { command },
+      executed: true,
+    }),
+  )
+  await expect(titleShimmer).toHaveAttribute("data-active", "true")
+  await expect(subtitle).toHaveText(command)
+})
+
+test("shimmers and expands a running shell command", async ({ page }) => {
   const id = "prt_shell_running_command"
   const command = "sleep 10 && echo done"
   await setupTimeline(page, {
@@ -44,8 +98,10 @@ test("shows and expands a running shell command without shimmering it", async ({
 
   const tool = page.locator(`[data-timeline-part-id="${id}"]`)
   await expect(tool.locator('[data-component="text-shimmer"]')).toHaveAttribute("data-active", "true")
+  await expect(tool).not.toContainText("Writing command...")
   await expect(tool.locator('[data-component="shell-submessage"]')).toHaveText(command)
   await expect(tool.locator('[data-component="shell-submessage"] [data-component="text-shimmer"]')).toHaveCount(0)
+  await expect(tool.locator('[data-slot="collapsible-trigger"]')).toHaveCSS("height", "28px")
   await tool.locator('[data-slot="collapsible-trigger"]').click()
   await expect(tool.locator('[data-slot="collapsible-trigger"]')).toHaveAttribute("aria-expanded", "true")
   await expect(tool.locator('[data-slot="bash-pre"]')).toContainText("still running")

packages/app/e2e/regression/session-timeline-notices.spec.ts

@@ -1,6 +1,15 @@
 import { expect, test } from "@playwright/test"
 import type { SessionMessageAssistant, SessionMessageInfo } from "@opencode-ai/client/promise"
-import { event, session, sessionID, setupTimeline } from "../performance/timeline-stability/fixture"
+import {
+  compactionDelta,
+  compactionEnded,
+  compactionFailed,
+  compactionStarted,
+  event,
+  session,
+  sessionID,
+  setupTimeline,
+} from "../performance/timeline-stability/fixture"
 
 const user = { id: "msg_user", type: "user", text: "Run it", time: { created: 1 } } satisfies SessionMessageInfo
 
@@ -73,6 +82,160 @@ test("renders current protocol notices in CLI order", async ({ page }) => {
   expect(ownerWarnings).toEqual([])
 })
 
+test("renders a compaction summary while it streams and after completion", async ({ page }) => {
+  const timeline = await setupTimeline(page, { sessionMessages: [user, assistant(true)] })
+
+  await timeline.send(
+    compactionStarted({
+      sessionID,
+      reason: "manual",
+      recent: "",
+    }),
+  )
+
+  const compaction = page.locator('[data-component="session-compaction-message"]')
+  await expect(compaction.getByText("Session compacted", { exact: true })).toBeVisible()
+
+  await timeline.send(
+    compactionDelta({
+      sessionID,
+      text: "## Checkpoint\n\nStreamed implementation details.",
+    }),
+  )
+  await expect(compaction.getByRole("heading", { name: "Checkpoint" })).toBeVisible()
+  await expect(compaction).toContainText("Streamed implementation details.")
+
+  await timeline.send(
+    compactionEnded({
+      sessionID,
+      reason: "manual",
+      text: "## Checkpoint\n\nFinal implementation details.",
+      recent: "",
+    }),
+  )
+  await expect(compaction).toContainText("Final implementation details.")
+  await expect(compaction).not.toContainText("Streamed implementation details.")
+})
+
+test("updates running compactions to failed and cancelled boundaries", async ({ page }) => {
+  const timeline = await setupTimeline(page, { sessionMessages: [user, assistant(true)] })
+
+  await timeline.send(compactionStarted({ sessionID, reason: "auto", recent: "" }))
+  await timeline.send(compactionDelta({ sessionID, text: "Partial summary that should be discarded." }))
+  await timeline.send(
+    compactionFailed({
+      sessionID,
+      reason: "auto",
+      error: {
+        type: "compaction.failed",
+        message: 'Error: {"error":{"type":"ProviderError","message":"The provider rejected the summary."}}',
+      },
+    }),
+  )
+
+  const compactions = page.locator('[data-component="session-compaction-message"]')
+  const failed = compactions.filter({ hasText: "The provider rejected the summary." })
+  await expect(failed.getByText("Session compacted", { exact: true })).toBeVisible()
+  await expect(failed.getByText("ProviderError: The provider rejected the summary.", { exact: true })).toBeVisible()
+  await expect(failed).not.toContainText("Partial summary that should be discarded.")
+
+  await timeline.send(compactionStarted({ sessionID, reason: "manual", recent: "" }))
+  await timeline.send(
+    compactionFailed({
+      sessionID,
+      reason: "manual",
+      error: { type: "aborted", message: "Cancellation detail should stay hidden." },
+    }),
+  )
+
+  await expect(compactions).toHaveCount(2)
+  const cancelled = compactions.filter({ hasNotText: "The provider rejected the summary." })
+  await expect(cancelled.getByText("Session compacted", { exact: true })).toBeVisible()
+  await expect(cancelled).not.toContainText("Cancellation detail should stay hidden.")
+})
+
+test("shows a delegating row while subagent input streams", async ({ page }) => {
+  await setupTimeline(page, {
+    sessionMessages: [
+      user,
+      {
+        ...assistant(false),
+        content: [
+          {
+            type: "tool",
+            id: "call_subagent",
+            name: "subagent",
+            state: { status: "streaming", input: "" },
+            time: { created: 2 },
+          },
+        ],
+      },
+    ],
+  })
+
+  const delegating = page.locator('[data-component="task-tool-delegating"]')
+  await expect(delegating).toBeVisible()
+  const shimmer = delegating.locator('[data-component="text-shimmer"]')
+  await expect(shimmer).toHaveAttribute("aria-label", "Delegating agent...")
+  await expect(shimmer).toHaveCSS("line-height", "16px")
+  const icon = delegating.locator('[data-slot="icon-svg"]')
+  await expect(icon.locator('use[href="#opencode-v2-icon-subagent"]')).toBeVisible()
+  await expect(icon).toHaveCSS("color", "rgb(174, 174, 174)")
+  await expect(page.locator('[data-component="task-tool-card"]')).toHaveCount(0)
+  await expect(page.locator('[data-timeline-row="Thinking"]')).toHaveCount(0)
+})
+
+test("renders the moved location notice in its compact timeline style", async ({ page }) => {
+  const directory = `/Users/usrnk1/Developer/opencode/${"nested-directory/".repeat(24)}session`
+  await page.setViewportSize({ width: 480, height: 720 })
+  await setupTimeline(page, {
+    sessionMessages: [
+      user,
+      {
+        id: "msg_location",
+        type: "location-switched",
+        location: { directory },
+        time: { created: 2 },
+      },
+    ],
+  })
+
+  const notice = page.locator('[data-slot="session-timeline-notice"][data-type="location-switched"]')
+  const label = notice.locator('[data-slot="session-timeline-notice-label"]')
+  const value = notice.locator('[data-slot="session-timeline-notice-value"]')
+  const tooltipTrigger = notice.locator('[data-component="tooltip-v2-trigger"]')
+
+  await expect(label).toHaveText("Moved to")
+  await expect(value).toHaveText(directory)
+  await expect(notice).not.toContainText("·")
+  await expect(notice.locator("svg")).toHaveCount(0)
+  await expect(notice).toHaveCSS("height", "28px")
+  await expect(notice).toHaveCSS("gap", "8px")
+  await expect(notice).toHaveCSS("padding-top", "4px")
+  await expect(notice).toHaveCSS("padding-bottom", "4px")
+  await expect(label).toHaveCSS("font-size", "13px")
+  await expect(label).toHaveCSS("font-weight", "530")
+  await expect(label).toHaveCSS("line-height", "16px")
+  await expect(label).toHaveCSS("color", "rgb(128, 128, 128)")
+  await expect(value).toHaveCSS("font-size", "13px")
+  await expect(value).toHaveCSS("font-weight", "440")
+  await expect(value).toHaveCSS("line-height", "16px")
+  await expect(value).toHaveCSS("color", "rgb(128, 128, 128)")
+  await expect(value).toHaveCSS("text-overflow", "ellipsis")
+  await expect(value).toHaveCSS("white-space", "nowrap")
+  await expect(value).toHaveAttribute("dir", "ltr")
+  await expect.poll(() => value.evaluate((element) => element.scrollWidth > element.clientWidth)).toBe(true)
+
+  const tooltip = page.getByText("Session working directory changed", { exact: true })
+  await label.hover()
+  await expect(tooltip).toBeVisible()
+  await page.mouse.move(0, 0)
+  await expect(tooltip).toBeHidden()
+  await tooltipTrigger.focus()
+  await expect(tooltipTrigger).toBeFocused()
+  await expect(tooltip).toBeVisible()
+})
+
 test("moves blocking work to the background with Ctrl+B", async ({ page }) => {
   await setupTimeline(page, { sessionMessages: [user, assistant(false, true)] })
   const card = page.locator('[data-component="task-tool-card"]')
@@ -81,7 +244,24 @@ test("moves blocking work to the background with Ctrl+B", async ({ page }) => {
   await expect(card).not.toContainText("(background)")
   await expect(page.getByText("Called `subagent`", { exact: false })).toHaveCount(0)
   await expect(page.locator('[data-component="background-tool-control"]')).toHaveCount(0)
-  await expect(page.locator('[data-action="session-background-toggle"]')).toContainText("Move 1 subagent to background")
+  const hint = page.locator('[data-component="session-background-hint"]')
+  const hintPrefix = hint.locator('[data-slot="session-background-hint-prefix"]')
+  await expect(hint).toBeVisible()
+  await expect(page.locator('[data-timeline-row="Thinking"]')).toHaveCount(0)
+  await expect
+    .poll(async () => {
+      const [cardBox, hintBox, prefixBox] = await Promise.all([
+        card.boundingBox(),
+        hint.boundingBox(),
+        hintPrefix.boundingBox(),
+      ])
+      if (!cardBox || !hintBox || !prefixBox) return undefined
+      return {
+        aligned: Math.abs(cardBox.x - prefixBox.x) < 2,
+        ordered: cardBox.y < hintBox.y,
+      }
+    })
+    .toEqual({ aligned: true, ordered: true })
 
   const request = page.waitForRequest(
     (request) =>
@@ -104,10 +284,10 @@ test("navigates from a running subagent card and hides background controls in th
     sessionStatus: { [sessionID]: { type: "busy" }, [childID]: { type: "busy" } },
   })
 
-  await expect(page.locator('[data-action="session-background-toggle"]')).toContainText("Move 1 subagent to background")
+  await expect(page.getByText(/move running work to the background/i)).toBeVisible()
   await page.locator('[data-component="task-tool-card"]').click()
   await expect(page).toHaveURL(new RegExp(`/session/${childID}$`))
-  await expect(page.locator('[data-component="session-background-dock"]')).toHaveCount(0)
+  await expect(page.getByText(/move running work to the background/i)).toHaveCount(0)
 })
 
 test("shows a badge for active background work", async ({ page }) => {
@@ -118,7 +298,14 @@ test("shows a badge for active background work", async ({ page }) => {
     sessionStatus: { [childID]: { type: "busy" } },
   })
 
-  await expect(page.locator('[data-component="session-background-dock"]')).toContainText("1 subagent in background")
+  await page.getByRole("button", { name: "Session details" }).click()
+  const summary = page.getByRole("button", { name: "1 item running in background" })
+  await expect(summary).toContainText("1")
+  await expect(summary).toContainText("Running work in background")
+  await summary.click()
+  await expect(
+    page.locator('[data-component="session-background-list"]').getByText("Agent", { exact: true }),
+  ).toBeVisible()
 })
 
 test("separates blocking and already-backgrounded work into two rows", async ({ page }) => {
@@ -193,10 +380,15 @@ test("separates blocking and already-backgrounded work into two rows", async ({
     },
   })
 
-  const dock = page.locator('[data-component="session-background-dock"]')
   const backgroundCard = page.locator('[data-timeline-part-id="call_backgrounded"]')
-  await expect(dock).toContainText("Move 1 subagent to background")
-  await expect(dock.getByText("Running 1 shell and 1 subagent in background", { exact: true })).toBeVisible()
+  await expect(page.getByText(/move running work to the background/i)).toBeVisible()
+  await page.getByRole("button", { name: "Session details" }).click()
+  const summary = page.getByRole("button", { name: "2 items running in background" })
+  await expect(summary).toContainText("2")
+  await summary.click()
+  const list = page.locator('[data-component="session-background-list"]')
+  await expect(list).toContainText("Background task")
+  await expect(list).toContainText("sleep 120")
   await expect(backgroundCard).toContainText("Background task (background)")
   await expect(backgroundCard.locator('[data-component="session-progress-indicator-v2"]')).toBeVisible()
   await expect(

packages/app/e2e/regression/session-timeline-projection.spec.ts

@@ -1,6 +1,7 @@
 import { expect, test } from "@playwright/test"
 import {
   assistantMessage,
+  partUpdated,
   setupTimeline,
   status,
   toolPart,
@@ -69,9 +70,126 @@ test.describe("session timeline projection", () => {
     ]) {
       await expect(page.locator(`[data-timeline-part-id="${id}"]`).first(), id).toBeVisible()
     }
+    const patch = page.locator('[data-timeline-part-id="prt_patch"]')
+    await expect(patch.getByText("1 file", { exact: true })).toBeVisible()
+    await expect(patch.getByRole("button", { name: "Patch 1 file", exact: true })).toHaveCount(0)
+    await expect(patch.getByRole("button")).toHaveCount(1)
+    await expect(patch.locator('[data-scope="apply-patch"] button[aria-expanded="false"]')).toHaveCount(1)
+    await expect(patch.locator('[data-slot="message-part-title-filename"]')).toHaveCount(0)
+    await expect(patch.locator('[data-slot="message-part-actions"]')).toHaveCount(0)
+    const edit = page.locator('[data-timeline-part-id="prt_edit"]')
+    await expect(edit.locator('[data-component="apply-patch-tool"]')).toBeVisible()
+    await expect(edit.locator('[data-slot="basic-tool-tool-title"]')).toContainText("Edit")
     await expect(page.locator('[data-timeline-part-id="prt_todo"]')).toHaveCount(0)
   })
 
+  test("combines adjacent patch calls and repeated files into one group", async ({ page }) => {
+    const first = "prt_patch_first"
+    const second = "prt_patch_second"
+    const timeline = await setupTimeline(page, {
+      messages: [
+        userMessage(),
+        assistantMessage([
+          toolPart(
+            first,
+            "patch",
+            "completed",
+            { patchText: "Update src/first.ts" },
+            {
+              metadata: { files: [patchFile("src/first.ts", "modified")] },
+            },
+          ),
+        ]),
+      ],
+    })
+
+    const initial = page.locator(`[data-timeline-part-id="${first}"]`)
+    const initialFile = initial.locator('[data-scope="apply-patch"] [data-type="update"]')
+    await expect(initialFile).toBeVisible()
+    await initialFile.getByRole("button").click()
+    await expect(initialFile.getByRole("button")).toHaveAttribute("aria-expanded", "true")
+    await initial.evaluate((element) => {
+      const row = element.closest<HTMLElement>("[data-timeline-key]")
+      if (row) row.dataset.patchRow = "stable"
+    })
+
+    await timeline.send(
+      partUpdated(toolPart(second, "patch", "running", { patchText: "Update more files" }, { metadata: {} })),
+    )
+
+    const group = page.locator(`[data-timeline-part-ids="${first},${second}"]`)
+    await expect(group.locator("xpath=ancestor::*[@data-timeline-key]")).toHaveAttribute("data-patch-row", "stable")
+    await expect(group.locator('[data-slot="apply-patch-filename"]')).toHaveText(["first.ts"])
+    await expect(group.locator('[data-scope="apply-patch"] [data-type="update"] button')).toHaveAttribute(
+      "aria-expanded",
+      "true",
+    )
+
+    await timeline.send(
+      partUpdated(
+        toolPart(
+          second,
+          "patch",
+          "completed",
+          { patchText: "Update more files" },
+          {
+            metadata: {
+              files: [patchFile("src/first.ts", "modified"), patchFile("src/second.ts", "added")],
+            },
+          },
+        ),
+      ),
+    )
+
+    await expect(group.locator('[data-slot="apply-patch-filename"]')).toHaveText(["first.ts", "second.ts"])
+    await expect(group.locator('[data-scope="apply-patch"] [data-type="update"] button')).toHaveAttribute(
+      "aria-expanded",
+      "true",
+    )
+    await expect(group.locator('[data-scope="apply-patch"] [data-type="add"] button')).toHaveAttribute(
+      "aria-expanded",
+      "false",
+    )
+    await expect(page.locator(`[data-timeline-part-id="${first}"], [data-timeline-part-id="${second}"]`)).toHaveCount(0)
+  })
+
+  test("combines adjacent edit calls and repeated files into one group", async ({ page }) => {
+    const first = "prt_edit_first"
+    const second = "prt_edit_second"
+    await setupTimeline(page, {
+      messages: [
+        userMessage(),
+        assistantMessage([
+          toolPart(
+            first,
+            "edit",
+            "completed",
+            { path: "src/first.ts", oldString: "one", newString: "two" },
+            {
+              metadata: { files: [patchFile("src/first.ts", "modified")] },
+            },
+          ),
+          toolPart(
+            second,
+            "edit",
+            "completed",
+            { path: "src/first.ts", oldString: "two", newString: "three" },
+            {
+              metadata: { files: [patchFile("src/first.ts", "modified")] },
+            },
+          ),
+        ]),
+      ],
+      settings: { editToolPartsExpanded: true },
+    })
+
+    const group = page.locator(`[data-timeline-part-ids="${first},${second}"]`)
+    await expect(group.locator('[data-slot="basic-tool-tool-title"]')).toContainText("Edit")
+    await expect(group.getByText("1 file", { exact: true })).toBeVisible()
+    await expect(group.locator('[data-slot="apply-patch-filename"]')).toHaveText(["first.ts"])
+    await expect(group.locator('[data-scope="apply-patch"] button')).toHaveAttribute("aria-expanded", "true")
+  })
+
   test("projects gaps, dividers, assistant parts, and errors together", async ({ page }) => {
     const firstUser = userMessage(
       [
@@ -196,11 +314,7 @@ function patchPart(id: string) {
     { patchText: "Update the projected files" },
     {
       metadata: {
-        files: [
-          patchFile("src/a.ts", "modified"),
-          patchFile("src/b.ts", "added"),
-          patchFile("src/old.ts", "deleted"),
-        ],
+        files: [patchFile("src/a.ts", "modified")],
       },
     },
   )

packages/app/e2e/regression/session-timeline-tool-projection.spec.ts

@@ -98,9 +98,9 @@ test("labels completed searches with result counts", async ({ page }) => {
 
   const group = page.locator(`[data-timeline-part-ids="${glob},${grep}"]`)
   await group.locator('[data-slot="collapsible-trigger"]').click()
-  const rows = group.locator('[data-component="tool-trigger"]')
-  await expect(rows.nth(0)).toContainText("(1 match)")
-  await expect(rows.nth(1)).toContainText("(12 matches)")
+  const rows = group.locator('[data-component="context-tool-group-list"] [data-component="tool-trigger"]')
+  await expect(rows.filter({ hasText: "Glob" })).toContainText("(1 match)")
+  await expect(rows.filter({ hasText: "Grep" })).toContainText("(12 matches)")
 })
 
 test("labels read tools from their path input", async ({ page }) => {
@@ -111,7 +111,11 @@ test("labels read tools from their path input", async ({ page }) => {
 
   const group = page.locator(`[data-timeline-part-ids="${id}"]`)
   await group.locator('[data-slot="collapsible-trigger"]').click()
-  await expect(group.locator('[data-slot="basic-tool-tool-subtitle"]')).toHaveText("a.ts")
+  await expect(
+    group
+      .locator('[data-component="context-tool-group-list"] [data-component="tool-trigger"]')
+      .filter({ hasText: "Read" }),
+  ).toContainText("a.ts")
 })
 
 test("labels skill tools from IDs and result metadata", async ({ page }) => {
@@ -121,25 +125,23 @@ test("labels skill tools from IDs and result metadata", async ({ page }) => {
     messages: [
       userMessage(),
       assistantMessage([
-        toolPart(pending, "skill", "running", { id: "sample-skill" }),
+        toolPart(pending, "skill", "running", { id: "frontend-design" }),
         toolPart(completed, "skill", "completed", { id: "opencode" }, { metadata: { name: "OpenCode" } }),
       ]),
     ],
   })
 
-  await expect(page.locator(`[data-timeline-part-id="${pending}"] [data-component="text-shimmer"]`)).toHaveAttribute(
-    "aria-label",
-    "sample-skill",
-  )
-  await expect(page.locator(`[data-timeline-part-id="${completed}"] [data-component="text-shimmer"]`)).toHaveAttribute(
-    "aria-label",
-    "OpenCode",
-  )
-  for (const id of [pending, completed]) {
+  for (const [id, name] of [
+    [pending, "frontend-design"],
+    [completed, "OpenCode"],
+  ] as const) {
     const skill = page.locator(`[data-timeline-part-id="${id}"]`)
-    await expect(skill.locator('[data-slot="skill-tool-label"]')).toHaveText("Skill")
-    await expect(skill.locator('[data-slot="skill-tool-separator"]')).toHaveText("·")
-    await expect(skill.locator('use[href="#opencode-v2-icon-post-skill"]')).toBeVisible()
+    const loaded = skill.locator('[data-component="tool-loaded-item"]')
+    await expect(loaded).toHaveAttribute("aria-label", `Loaded ${name} skill`)
+    await expect(loaded).toHaveCSS("line-height", "16px")
+    await expect(loaded.locator('[data-slot="tool-loaded-label"]')).toHaveText("Loaded")
+    await expect(loaded.locator('[data-slot="tool-loaded-kind"]')).toHaveText("skill")
+    await expect(loaded.locator('[data-component="text-shimmer"]')).toHaveAttribute("aria-label", name)
   }
 })
 

packages/app/e2e/regression/subagent-child-navigation.spec.ts

@@ -26,6 +26,42 @@ test("navigates to a subagent child session missing from the session list", asyn
   await expect(titlebarRight.getByRole("button", { name: "Toggle review" })).toHaveCount(1)
 })
 
+test("returns to the parent session with Escape", async ({ page }) => {
+  await setup(page)
+  await openChildFromParent(page)
+  await expectSessionTitle(page, taskDescription)
+
+  await page.keyboard.press("Escape")
+
+  await Promise.all([expect(page).toHaveURL(sessionHref(parentID)), expectSessionTitle(page, parentTitle)])
+})
+
+test("shows parent lineage while the child timeline loads", async ({ page }) => {
+  await setup(page)
+  const requested = Promise.withResolvers<void>()
+  const release = Promise.withResolvers<void>()
+  await page.route(
+    (url) =>
+      url.pathname === `/api/session/${childID}/message` &&
+      url.port === (process.env.PLAYWRIGHT_SERVER_PORT ?? "4096"),
+    async (route) => {
+      requested.resolve()
+      await release.promise
+      await route.fallback()
+    },
+  )
+
+  await page.goto(sessionHref(parentID))
+  await expectSessionTitle(page, parentTitle)
+  await page.locator(`a[href="${sessionHref(childID)}"]`).click()
+  await Promise.all([requested.promise, expect(page).toHaveURL(sessionHref(childID))])
+  await Promise.all([
+    expect(page.locator('[data-slot="session-title-parent"]')).toHaveText(parentTitle),
+    expect(page.locator('[data-slot="session-title-child"]')).toHaveText(childTitle),
+  ]).finally(() => release.resolve())
+  await expectSessionTitle(page, taskDescription)
+})
+
 test("keeps the parent visible while the child session resolves", async ({ page }) => {
   await setup(page)
   const requested = Promise.withResolvers<void>()
@@ -50,6 +86,44 @@ test("keeps the parent visible while the child session resolves", async ({ page
   await expectSessionTitle(page, taskDescription)
 })
 
+test("keeps the parent tab selected while a loaded child session resolves", async ({ page }) => {
+  await setup(page)
+  await openChildFromParent(page)
+  await expectSessionTitle(page, taskDescription)
+  await page.goBack()
+  await Promise.all([expect(page).toHaveURL(sessionHref(parentID)), expectSessionTitle(page, parentTitle)])
+
+  const requested = Promise.withResolvers<void>()
+  const release = Promise.withResolvers<void>()
+  await page.route(
+    (url) => url.pathname === `/api/session/${childID}` && url.port === (process.env.PLAYWRIGHT_SERVER_PORT ?? "4096"),
+    async (route) => {
+      requested.resolve()
+      await release.promise
+      await route.fallback()
+    },
+  )
+
+  const parentTab = page.locator("[data-titlebar-tab-slot]", {
+    has: page.locator('[data-slot="tab-title"]', { hasText: parentTitle }),
+  })
+  await page.locator(`a[href="${sessionHref(childID)}"]`).click()
+  await Promise.all([requested.promise, expect(page).toHaveURL(sessionHref(childID))])
+  await Promise.all([
+    expect(parentTab).toHaveAttribute("data-active", "true"),
+    expect(page.locator('[data-slot="session-title-parent"]')).toHaveText(parentTitle),
+  ]).finally(() => release.resolve())
+  await expectSessionTitle(page, taskDescription)
+
+  const home = page.getByRole("button", { name: "Home" })
+  await home.click()
+  await expect(page).toHaveURL("/")
+  const childTab = page.locator(`[data-slot="titlebar-tabs"] a[href="${sessionHref(childID)}"]`)
+  await expect(childTab).toHaveCount(1)
+  await childTab.click()
+  await Promise.all([expect(page).toHaveURL(sessionHref(childID)), expectSessionTitle(page, taskDescription)])
+})
+
 test("shows the not found fallback when the viewed session is deleted", async ({ page }) => {
   const events: OpenCodeEvent[] = []
   await setup(page, () => events.splice(0, 1))

packages/app/e2e/regression/terminal-composer-focus.spec.ts

@@ -9,10 +9,14 @@ const sessionID = "ses_terminal_composer_focus"
 const ptyID = "pty_terminal_composer_focus"
 const newPtyID = "pty_terminal_composer_focus_new"
 const server = `http://${process.env.PLAYWRIGHT_SERVER_HOST ?? "127.0.0.1"}:${process.env.PLAYWRIGHT_SERVER_PORT ?? "4096"}`
+const ptyInput: string[] = []
+let sendPtyOutput: ((data: string) => void) | undefined
 
 test.use({ viewport: { width: 1440, height: 900 } })
 
 test.beforeEach(async ({ page }) => {
+  ptyInput.length = 0
+  sendPtyOutput = undefined
   await mockOpenCodeServer(page, {
     directory,
     project: {
@@ -70,7 +74,50 @@ test.beforeEach(async ({ page }) => {
       body: JSON.stringify({ location: ptyLocation(), data: { ticket: "e2e-ticket", expires_in: 60 } }),
     }),
   )
-  await page.routeWebSocket(new RegExp(`/api/pty/${ptyID}/connect`), () => undefined)
+  await page.routeWebSocket(new RegExp(`/api/pty/${ptyID}/connect`), (ws) => {
+    ws.onMessage((message) => ptyInput.push(message.toString()))
+    sendPtyOutput = (data) => ws.send(data)
+  })
+})
+
+test("clears the terminal line with Command+Delete", async ({ page }) => {
+  await page.goto(`/server/${base64Encode(server)}/session/${sessionID}`)
+  await expectSessionTitle(page, "Terminal composer focus")
+
+  const terminal = page.locator('[data-component="terminal"]')
+  await page.keyboard.press("Control+Backquote")
+  await expect(terminal.locator("textarea")).toHaveCount(1)
+
+  await page.keyboard.press("Meta+Backspace")
+
+  await expect.poll(() => ptyInput.join("")).toBe("\x15")
+})
+
+test("hides the native contenteditable caret", async ({ page }) => {
+  await page.goto(`/server/${base64Encode(server)}/session/${sessionID}`)
+  await expectSessionTitle(page, "Terminal composer focus")
+
+  await page.keyboard.press("Control+Backquote")
+  const terminal = page.locator('[data-component="terminal"]')
+  await expect(terminal).toHaveAttribute("contenteditable", "true")
+  await expect(terminal).toHaveCSS("caret-color", "rgba(0, 0, 0, 0)")
+})
+
+test("reveals the terminal after its first server output renders", async ({ page }) => {
+  await page.goto(`/server/${base64Encode(server)}/session/${sessionID}`)
+  await expectSessionTitle(page, "Terminal composer focus")
+
+  await page.keyboard.press("Control+Backquote")
+  const terminal = page.locator('[data-component="terminal"]')
+  await expect(terminal).toHaveAttribute("contenteditable", "true")
+  await expect(terminal).toHaveCSS("opacity", "0")
+  await expect.poll(() => sendPtyOutput).toBeDefined()
+
+  sendPtyOutput?.("\x1b[?25h")
+  await expect(terminal).toHaveCSS("opacity", "0")
+
+  sendPtyOutput?.("ready")
+  await expect(terminal).toHaveCSS("opacity", "1")
 })
 
 test("routes typing to the composer unless the open terminal is focused", async ({ page }) => {
@@ -196,7 +243,8 @@ test("focuses a terminal created from the new-terminal button", async ({ page })
 
   await page.getByRole("button", { name: "New terminal" }).click()
   await expect(page.getByRole("tab", { name: "Terminal 2" })).toHaveAttribute("aria-selected", "true")
-  await expect.poll(() => terminal.evaluate((element) => element.contains(document.activeElement))).toBe(true)
+  const active = page.locator(`#terminal-wrapper-${newPtyID} [data-component="terminal"]`)
+  await expect.poll(() => active.evaluate((element) => element.contains(document.activeElement))).toBe(true)
 })
 
 function seedCachedTerminal(page: Page) {

packages/app/e2e/regression/terminal-hidden.spec.ts

@@ -1,4 +1,4 @@
-import { expect, test } from "@playwright/test"
+import { expect, test, type Page } from "@playwright/test"
 import { mockOpenCodeServer } from "../utils/mock-server"
 import { expectSessionTitle } from "../utils/waits"
 
@@ -8,7 +8,7 @@ const sessionID = "ses_hidden_terminal_regression"
 const title = "Hidden terminal regression"
 const server = `http://${process.env.PLAYWRIGHT_SERVER_HOST ?? "127.0.0.1"}:${process.env.PLAYWRIGHT_SERVER_PORT ?? "4096"}`
 
-test("unmounts the terminal panel while it is hidden", async ({ page }) => {
+test("animates review and terminal panels while caching hidden terminal content", async ({ page }) => {
   await page.setViewportSize({ width: 1400, height: 900 })
   await mockOpenCodeServer(page, {
     directory,
@@ -42,6 +42,16 @@ test("unmounts the terminal panel while it is hidden", async ({ page }) => {
         time: { created: 1700000000000, updated: 1700000000000 },
       },
     ],
+    vcsDiff: [
+      {
+        file: "src/animation.ts",
+        additions: 1,
+        deletions: 1,
+        status: "modified",
+        patch:
+          "diff --git a/src/animation.ts b/src/animation.ts\n--- a/src/animation.ts\n+++ b/src/animation.ts\n@@ -1 +1 @@\n-export const value = 'before'\n+export const value = 'after'\n",
+      },
+    ],
     pageMessages: () => ({ items: [] }),
   })
   await page.route("**/api/pty*", (route) =>
@@ -94,24 +104,403 @@ test("unmounts the terminal panel while it is hidden", async ({ page }) => {
 
   await page.goto(`/server/${base64Encode(server)}/session/${sessionID}`)
   await expectSessionTitle(page, title)
+  await installMotionProbe(page)
+
+  const reviewToggle = page.getByRole("button", { name: "Toggle review" })
+  await reviewToggle.click()
+  await expect(page.locator("#review-panel")).toBeVisible()
+  await expectWidthMotions(page, 1)
+  await expectReviewWidthStable(page)
+  await expectLogicalSideAlignment(page, "ltr")
+  await page.evaluate(() => (document.documentElement.dir = "rtl"))
+  await expectLogicalSideAlignment(page, "rtl")
+  await page.evaluate(() => (document.documentElement.dir = "ltr"))
 
-  await page.keyboard.press("Control+Backquote")
   const panel = page.locator("#terminal-panel")
+  const terminalContent = page.locator('[data-component="terminal"]')
+  await page.keyboard.press("Control+Backquote")
+  await expect(panel).toBeVisible()
+  await expect(terminalContent).toBeVisible()
+  await terminalContent.evaluate((element) => element.setAttribute("data-cache-probe", "original"))
+  await expectHeightMotions(page, "session-side-region", 1)
+  await expectHeightMotions(page, "session-side-terminal-region", 1)
+  await expectStackedGeometry(page)
+  await expectPanelGapHeld(page)
+
+  await resetTerminalTopMotion(page)
+  await resetTerminalBottomMotion(page)
+  await resetTerminalAnchorGaps(page)
+  await resetPanelGaps(page)
+  await reviewToggle.click()
+  await expect(page.locator("#review-panel")).toHaveCount(0)
+  await expect(panel).toBeVisible()
+  await expectHeightMotions(page, "session-side-region", 2)
+  await expectHeightMotions(page, "session-side-terminal-region", 2)
+  await expectTerminalTopMotion(page)
+  await expectTerminalBottomFixed(page)
+  await expectTerminalTopAnchored(page)
+  await expectPanelGapHeld(page)
+  await reviewToggle.click()
+  await expect(page.locator("#review-panel")).toBeVisible()
+  await expectHeightMotions(page, "session-side-region", 3)
+  await expectHeightMotions(page, "session-side-terminal-region", 3)
+
+  await resetTerminalContentSizes(page)
+  await resetPanelGaps(page)
+  await page.keyboard.press("Control+Backquote")
+  await expect(page.locator('[data-slot="side-terminal-panel-clip"]')).toHaveCSS("overflow", "clip")
+  await expectHeightMotions(page, "session-side-region", 4)
+  await expectHeightMotions(page, "session-side-terminal-region", 4)
+  await expect(panel).toBeHidden()
+  await expect(terminalContent).toHaveAttribute("data-cache-probe", "original")
+  await expectTerminalContentCachedSize(page)
+  await expectStackPainted(page)
+  await expectPanelGapHeld(page)
+  await expect(page.locator('[data-slot="session-side-panel-gap"]')).toHaveCSS("height", "0px")
+
+  await reviewToggle.click()
+  await expect(page.locator("#review-panel")).toHaveCount(0)
+  await expectWidthMotions(page, 2)
+
+  await resetHeightMotions(page)
+  await page.keyboard.press("Control+Backquote")
   await expect(panel).toHaveAttribute("aria-hidden", "false")
   await expect(page.locator('[data-component="terminal"]')).toBeVisible()
+  await expectWidthMotions(page, 3)
+  await expectSideMotionSettled(page)
+  await expectNoHeightMotion(page)
 
   await page.keyboard.press("Control+Backquote")
-  await expect(panel).toHaveCount(0)
-  await expect(page.locator('[data-component="terminal"]')).toHaveCount(0)
+  await expect(panel).toBeHidden()
+  await expect(terminalContent).toHaveAttribute("data-cache-probe", "original")
+  await expectWidthMotions(page, 4)
 
   await page.setViewportSize({ width: 1200, height: 700 })
-  await expect(page.locator('[data-component="terminal"]')).toHaveCount(0)
+  await expect(terminalContent).toHaveAttribute("data-cache-probe", "original")
 
   await page.keyboard.press("Control+Backquote")
   await expect(panel).toBeVisible()
-  await expect(page.locator('[data-component="terminal"]')).toBeVisible()
+  await expect(terminalContent).toBeVisible()
+  await expect(terminalContent).toHaveAttribute("data-cache-probe", "original")
+  await expectWidthMotions(page, 5)
+
+  await page.keyboard.press("Control+Backquote")
+  await expect(panel).toBeHidden()
+
+  await page.evaluate(() => {
+    const settings = JSON.parse(localStorage.getItem("settings.v3") ?? "{}")
+    localStorage.setItem(
+      "settings.v3",
+      JSON.stringify({ ...settings, general: { ...settings.general, terminalPlacement: "bottom" } }),
+    )
+  })
+  await page.reload()
+  await expectSessionTitle(page, title)
+  await installMotionProbe(page)
+
+  await page.keyboard.press("Control+Backquote")
+  await expect(panel).toBeVisible()
+  await expectAnimation(page, "terminal-panel-size-in")
+  await page.keyboard.press("Control+Backquote")
+  await expectAnimation(page, "terminal-panel-size-out")
+  await expect(panel).toBeHidden()
+  await expect(page.locator('[data-component="terminal"]')).toBeAttached()
 })
 
+type MotionProbe = {
+  widths: number
+  reviewWidths: number[]
+  paintGaps: { review: number; terminalSurface: number }[]
+  terminalContentSizes: { width: number; height: number }[]
+  terminalAnchorGaps: number[]
+  resetAnchorOnMotion: boolean
+  panelGaps: number[]
+  terminalTops: number[]
+  terminalBottoms: number[]
+  heights: string[]
+  animations: string[]
+}
+
+async function installMotionProbe(page: Page) {
+  await page.evaluate(() => {
+    const probe: MotionProbe = {
+      widths: 0,
+      reviewWidths: [],
+      paintGaps: [],
+      terminalContentSizes: [],
+      terminalAnchorGaps: [],
+      resetAnchorOnMotion: false,
+      panelGaps: [],
+      terminalTops: [],
+      terminalBottoms: [],
+      heights: [],
+      animations: [],
+    }
+    const observed = new WeakSet<Element>()
+    const observers: ResizeObserver[] = []
+    const observeReview = () => {
+      const review = document.querySelector('[data-component="session-review-v2"]')
+      if (!review || observed.has(review)) return
+      observed.add(review)
+      const observer = new ResizeObserver(([entry]) => probe.reviewWidths.push(entry.contentRect.width))
+      observer.observe(review)
+      observers.push(observer)
+    }
+    const observedRegions = new WeakSet<Element>()
+    const observeStack = () => {
+      const reviewRegion = document.querySelector<HTMLElement>('[data-slot="session-side-region"]')
+      const terminalRegion = document.querySelector<HTMLElement>('[data-slot="session-side-terminal-region"]')
+      if (!reviewRegion || !terminalRegion || observedRegions.has(reviewRegion)) return
+      observedRegions.add(reviewRegion)
+      const observer = new ResizeObserver(() => {
+        const review = document.querySelector<HTMLElement>("#review-panel")
+        const terminal = document.querySelector<HTMLElement>("#terminal-panel")
+        const terminalContent = document.querySelector<HTMLElement>('[data-slot="terminal-panel-content"]')
+        const panelGap = document.querySelector<HTMLElement>('[data-slot="session-side-panel-gap"]')
+        if (!terminal || !terminalContent) return
+        probe.terminalTops.push(terminal.getBoundingClientRect().top)
+        probe.terminalBottoms.push(terminal.getBoundingClientRect().bottom)
+        probe.terminalContentSizes.push({
+          width: terminalContent.getBoundingClientRect().width,
+          height: terminalContent.getBoundingClientRect().height,
+        })
+        const anchorGap = Math.abs(terminal.getBoundingClientRect().top - terminalContent.getBoundingClientRect().top)
+        if (probe.resetAnchorOnMotion) {
+          if (anchorGap > 8) return
+          probe.terminalAnchorGaps = []
+          probe.resetAnchorOnMotion = false
+        }
+        probe.terminalAnchorGaps.push(anchorGap)
+        if (panelGap && terminalRegion.getBoundingClientRect().height > 1)
+          probe.panelGaps.push(panelGap.getBoundingClientRect().height)
+        if (!review) return
+        probe.paintGaps.push({
+          review: Math.abs(reviewRegion.getBoundingClientRect().height - review.getBoundingClientRect().height),
+          terminalSurface: Math.abs(
+            terminalRegion.getBoundingClientRect().height - terminal.getBoundingClientRect().height,
+          ),
+        })
+      })
+      observer.observe(reviewRegion)
+      observer.observe(terminalRegion)
+      observers.push(observer)
+    }
+    new MutationObserver(() => {
+      observeReview()
+      observeStack()
+    }).observe(document.body, { childList: true, subtree: true })
+    observeReview()
+    observeStack()
+    document.addEventListener("transitionrun", (event) => {
+      if (!(event.target instanceof Element)) return
+      const slot = event.target.getAttribute("data-slot")
+      if (event.propertyName === "width" && slot === "session-chat-panel") probe.widths++
+      if (event.propertyName === "height" && slot) {
+        probe.heights.push(slot)
+      }
+    })
+    document.addEventListener("animationstart", (event) => {
+      if (!(event.target instanceof Element) || event.target.getAttribute("data-component") !== "terminal-panel") return
+      probe.animations.push(event.animationName)
+    })
+    ;(window as Window & { __panelMotion?: MotionProbe }).__panelMotion = probe
+  })
+}
+
+async function expectWidthMotions(page: Page, count: number) {
+  await expect
+    .poll(() => page.evaluate(() => (window as Window & { __panelMotion?: MotionProbe }).__panelMotion?.widths ?? 0))
+    .toBeGreaterThanOrEqual(count)
+}
+
+async function resetHeightMotions(page: Page) {
+  await page.evaluate(() => {
+    const probe = (window as Window & { __panelMotion?: MotionProbe }).__panelMotion
+    if (probe) probe.heights = []
+  })
+}
+
+async function expectSideMotionSettled(page: Page) {
+  const side = page.locator('[data-slot="session-side-panel-presence"]')
+  await expect
+    .poll(() => side.evaluate((element) => element.getAnimations().every((item) => item.playState === "finished")))
+    .toBe(true)
+}
+
+async function expectNoHeightMotion(page: Page) {
+  const heights = await page.evaluate(
+    () => (window as Window & { __panelMotion?: MotionProbe }).__panelMotion?.heights ?? [],
+  )
+  expect(heights).toEqual([])
+}
+
+async function expectReviewWidthStable(page: Page) {
+  const side = page.locator('[data-slot="session-side-panel-presence"]')
+  await expect
+    .poll(() => side.evaluate((element) => element.getAnimations().every((item) => item.playState === "finished")))
+    .toBe(true)
+  await expect
+    .poll(() =>
+      page.evaluate(() => (window as Window & { __panelMotion?: MotionProbe }).__panelMotion?.reviewWidths.length ?? 0),
+    )
+    .toBeGreaterThan(0)
+  const widths = await page.evaluate(
+    () => (window as Window & { __panelMotion?: MotionProbe }).__panelMotion?.reviewWidths.map(Math.round) ?? [],
+  )
+  expect(new Set(widths).size).toBe(1)
+}
+
+async function expectStackedGeometry(page: Page) {
+  await expect
+    .poll(() =>
+      page.evaluate(() => {
+        const review = document.querySelector<HTMLElement>("#review-panel")?.getBoundingClientRect()
+        const terminal = document.querySelector<HTMLElement>("#terminal-panel")?.getBoundingClientRect()
+        if (!review || !terminal) return Number.POSITIVE_INFINITY
+        return terminal.top - review.bottom
+      }),
+    )
+    .toBeLessThanOrEqual(9)
+  await expect
+    .poll(() =>
+      page.evaluate(() => {
+        const review = document.querySelector<HTMLElement>("#review-panel")?.getBoundingClientRect()
+        const terminal = document.querySelector<HTMLElement>("#terminal-panel")?.getBoundingClientRect()
+        if (!review || !terminal) return Number.NEGATIVE_INFINITY
+        return terminal.top - review.bottom
+      }),
+    )
+    .toBeGreaterThanOrEqual(7)
+}
+
+async function expectLogicalSideAlignment(page: Page, direction: "ltr" | "rtl") {
+  await expect
+    .poll(() =>
+      page.evaluate((direction) => {
+        const frame = document.querySelector('[data-slot="session-side-panel-presence"]')?.getBoundingClientRect()
+        const content = document.querySelector('[data-slot="session-side-panel-content"]')?.getBoundingClientRect()
+        if (!frame || !content) return Number.POSITIVE_INFINITY
+        return direction === "rtl" ? Math.abs(frame.right - content.right) : Math.abs(frame.left - content.left)
+      }, direction),
+    )
+    .toBeLessThanOrEqual(1)
+}
+
+async function expectStackPainted(page: Page) {
+  const gaps = await page.evaluate(
+    () => (window as Window & { __panelMotion?: MotionProbe }).__panelMotion?.paintGaps ?? [],
+  )
+  expect(gaps.length).toBeGreaterThan(0)
+  expect(Math.max(...gaps.map((gap) => gap.review))).toBeLessThanOrEqual(1)
+  expect(Math.max(...gaps.map((gap) => gap.terminalSurface)), JSON.stringify(gaps)).toBeLessThanOrEqual(1)
+}
+
+async function resetTerminalTopMotion(page: Page) {
+  await page.evaluate(() => {
+    const probe = (window as Window & { __panelMotion?: MotionProbe }).__panelMotion
+    if (probe) probe.terminalTops = []
+  })
+}
+
+async function resetTerminalBottomMotion(page: Page) {
+  await page.evaluate(() => {
+    const probe = (window as Window & { __panelMotion?: MotionProbe }).__panelMotion
+    if (probe) probe.terminalBottoms = []
+  })
+}
+
+async function expectTerminalBottomFixed(page: Page) {
+  const bottoms = await page.evaluate(
+    () => (window as Window & { __panelMotion?: MotionProbe }).__panelMotion?.terminalBottoms ?? [],
+  )
+  expect(bottoms.length).toBeGreaterThan(0)
+  expect(Math.max(...bottoms) - Math.min(...bottoms)).toBeLessThanOrEqual(1)
+}
+
+async function resetTerminalAnchorGaps(page: Page) {
+  await page.evaluate(() => {
+    const probe = (window as Window & { __panelMotion?: MotionProbe }).__panelMotion
+    if (probe) probe.resetAnchorOnMotion = true
+  })
+}
+
+async function resetPanelGaps(page: Page) {
+  await page.evaluate(() => {
+    const probe = (window as Window & { __panelMotion?: MotionProbe }).__panelMotion
+    if (probe) probe.panelGaps = []
+  })
+}
+
+async function expectPanelGapHeld(page: Page) {
+  const gaps = await page.evaluate(
+    () => (window as Window & { __panelMotion?: MotionProbe }).__panelMotion?.panelGaps ?? [],
+  )
+  expect(gaps.length).toBeGreaterThan(0)
+  expect(gaps.filter((gap) => gap >= 7 && gap <= 9).length / gaps.length).toBeGreaterThan(0.6)
+  expect(Math.min(...gaps)).toBeGreaterThanOrEqual(0)
+  expect(Math.max(...gaps)).toBeLessThanOrEqual(9)
+}
+
+async function expectTerminalTopAnchored(page: Page) {
+  const gaps = await page.evaluate(
+    () => (window as Window & { __panelMotion?: MotionProbe }).__panelMotion?.terminalAnchorGaps ?? [],
+  )
+  expect(gaps.length).toBeGreaterThan(0)
+  expect(Math.max(...gaps), JSON.stringify(gaps)).toBeLessThanOrEqual(8)
+}
+
+async function resetTerminalContentSizes(page: Page) {
+  await page.evaluate(() => {
+    const probe = (window as Window & { __panelMotion?: MotionProbe }).__panelMotion
+    if (probe) probe.terminalContentSizes = []
+  })
+}
+
+async function expectTerminalContentCachedSize(page: Page) {
+  const sizes = await page.evaluate(
+    () => (window as Window & { __panelMotion?: MotionProbe }).__panelMotion?.terminalContentSizes ?? [],
+  )
+  expect(sizes.length).toBeGreaterThan(0)
+  expect(Math.min(...sizes.map((size) => size.width))).toBeGreaterThan(100)
+  expect(Math.min(...sizes.map((size) => size.height))).toBeGreaterThan(100)
+}
+
+async function expectTerminalTopMotion(page: Page) {
+  const tops = await page.evaluate(
+    () => (window as Window & { __panelMotion?: MotionProbe }).__panelMotion?.terminalTops.map(Math.round) ?? [],
+  )
+  const unique = [...new Set(tops)]
+  const range = Math.max(...unique) - Math.min(...unique)
+  const maxDelta = Math.max(...unique.slice(1).map((value, index) => Math.abs(value - unique[index])))
+  expect(unique.length, JSON.stringify(unique)).toBeGreaterThan(6)
+  expect(maxDelta, JSON.stringify({ unique, range, maxDelta })).toBeLessThan(range * 0.3)
+}
+
+async function expectHeightMotions(page: Page, slot: string, count: number) {
+  await expect
+    .poll(() =>
+      page.evaluate(
+        (slot) =>
+          (window as Window & { __panelMotion?: MotionProbe }).__panelMotion?.heights.filter((value) => value === slot)
+            .length ?? 0,
+        slot,
+      ),
+    )
+    .toBeGreaterThanOrEqual(count)
+}
+
+async function expectAnimation(page: Page, name: string) {
+  await expect
+    .poll(() =>
+      page.evaluate(
+        (name) =>
+          (window as Window & { __panelMotion?: MotionProbe }).__panelMotion?.animations.includes(name) ?? false,
+        name,
+      ),
+    )
+    .toBe(true)
+}
+
 function base64Encode(value: string) {
   return Buffer.from(value, "utf8").toString("base64").replace(/\+/g, "-").replace(/\//g, "_").replace(/=/g, "")
 }

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

@@ -358,7 +358,8 @@ test.describe("smoke: session timeline", () => {
     const shellTrigger = shell.locator('[data-slot="collapsible-trigger"]')
     const shellSubtitle = shell.locator('[data-slot="basic-tool-tool-subtitle"]')
     await expect(shellSubtitle).toHaveCount(0)
-    await expect(shell.locator('[data-slot="bash-pre"]')).toContainText("$ bun typecheck")
+    await expect(shell.locator('[data-slot="bash-command"]')).toHaveText("bun typecheck")
+    await expect(shell.locator('[data-slot="bash-result"]')).not.toContainText("bun typecheck")
     await shellTrigger.click()
     await expect(shellTrigger).toHaveAttribute("aria-expanded", "false")
     await expect(shellSubtitle).toHaveText("bun typecheck")

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

@@ -0,0 +1,249 @@
+import { Schema, SchemaGetter } from "effect"
+import { HttpApi, HttpApiEndpoint, HttpApiGroup, HttpApiSchema } from "effect/unstable/httpapi"
+
+const Json = Schema.Json.pipe(
+  Schema.decodeTo(Schema.Unknown, {
+    decode: SchemaGetter.passthrough(),
+    encode: SchemaGetter.transform(jsonValue),
+  }),
+  HttpApiSchema.asJson(),
+)
+const JsonPayload = Schema.Unknown.pipe(HttpApiSchema.asJson())
+const Query = Schema.Struct({
+  directory: Schema.optional(Schema.String),
+  parentID: Schema.optional(Schema.String),
+  search: Schema.optional(Schema.String),
+  order: Schema.optional(Schema.String),
+  cursor: Schema.optional(Schema.String),
+  limit: Schema.optional(Schema.NumberFromString),
+  path: Schema.optional(Schema.String),
+  query: Schema.optional(Schema.String),
+  type: Schema.optional(Schema.String),
+})
+const SessionParams = { sessionID: Schema.String }
+const NoContent = HttpApiSchema.NoContent
+
+export class MockNotFound extends Schema.TaggedError<MockNotFound>()("MockNotFound", {
+  message: Schema.String,
+}) {}
+
+export class MockBadRequest extends Schema.TaggedError<MockBadRequest>()("MockBadRequest", {
+  message: Schema.String,
+}) {}
+
+const Group = HttpApiGroup.make("mock")
+  .add(HttpApiEndpoint.get("health", "/api/health", { success: Json }))
+  .add(
+    HttpApiEndpoint.get("event", "/api/event", {
+      success: Schema.String.pipe(HttpApiSchema.asText({ contentType: "text/event-stream" })),
+    }),
+  )
+  .add(HttpApiEndpoint.get("reference", "/api/reference", { success: Json }))
+  .add(HttpApiEndpoint.get("agent", "/api/agent", { success: Json }))
+  .add(HttpApiEndpoint.get("provider", "/api/provider", { success: Json }))
+  .add(HttpApiEndpoint.get("model", "/api/model", { success: Json }))
+  .add(HttpApiEndpoint.get("modelDefault", "/api/model/default", { success: Json }))
+  .add(HttpApiEndpoint.get("integrationList", "/api/integration", { success: Json }))
+  .add(
+    HttpApiEndpoint.get("integrationGet", "/api/integration/:integrationID", {
+      params: { integrationID: Schema.String },
+      success: Json,
+    }),
+  )
+  .add(
+    HttpApiEndpoint.post("integrationConnect", "/api/integration/:integrationID/connect/key", {
+      params: { integrationID: Schema.String },
+      payload: JsonPayload,
+      success: NoContent,
+    }),
+  )
+  .add(
+    HttpApiEndpoint.delete("credentialRemove", "/api/credential/:credentialID", {
+      params: { credentialID: Schema.String },
+      success: NoContent,
+    }),
+  )
+  .add(HttpApiEndpoint.get("command", "/api/command", { success: Json }))
+  .add(HttpApiEndpoint.get("skill", "/api/skill", { success: Json }))
+  .add(HttpApiEndpoint.get("plugin", "/api/plugin", { success: Json }))
+  .add(HttpApiEndpoint.get("mcp", "/api/mcp", { success: Json }))
+  .add(HttpApiEndpoint.get("mcpResource", "/api/mcp/resource", { success: Json }))
+  .add(HttpApiEndpoint.get("projectList", "/api/project", { success: Json }))
+  .add(HttpApiEndpoint.get("projectCurrent", "/api/project/current", { success: Json }))
+  .add(
+    HttpApiEndpoint.get("worktreeList", "/api/worktree/:projectID", {
+      params: { projectID: Schema.String },
+      success: Json,
+    }),
+  )
+  .add(
+    HttpApiEndpoint.post("worktreeCreate", "/api/worktree/:projectID", {
+      params: { projectID: Schema.String },
+      payload: JsonPayload,
+      success: Json,
+    }),
+  )
+  .add(
+    HttpApiEndpoint.delete("worktreeRemove", "/api/worktree/:projectID", {
+      params: { projectID: Schema.String },
+      success: NoContent,
+    }),
+  )
+  .add(
+    HttpApiEndpoint.post("worktreeRefresh", "/api/worktree/:projectID/refresh", {
+      params: { projectID: Schema.String },
+      success: NoContent,
+    }),
+  )
+  .add(HttpApiEndpoint.get("location", "/api/location", { success: Json }))
+  .add(HttpApiEndpoint.get("permissionRequests", "/api/permission/request", { success: Json }))
+  .add(HttpApiEndpoint.get("formRequests", "/api/form/request", { success: Json }))
+  .add(HttpApiEndpoint.get("vcs", "/api/vcs", { success: Json }))
+  .add(HttpApiEndpoint.get("vcsStatus", "/api/vcs/status", { success: Json }))
+  .add(HttpApiEndpoint.get("vcsDiff", "/api/vcs/diff", { success: Json }))
+  .add(HttpApiEndpoint.get("fsList", "/api/fs/list", { query: Query, success: Json }))
+  .add(
+    HttpApiEndpoint.get("fsRead", "/api/fs/read/*", {
+      success: Schema.Uint8Array.pipe(HttpApiSchema.asUint8Array()),
+    }),
+  )
+  .add(HttpApiEndpoint.get("fsFind", "/api/fs/find", { query: Query, success: Json }))
+  .add(HttpApiEndpoint.get("shell", "/api/shell", { success: Json }))
+  .add(
+    HttpApiEndpoint.get("ptyConnectToken", "/api/pty/:ptyID/connect-token", {
+      params: { ptyID: Schema.String },
+      success: Json,
+    }),
+  )
+  .add(
+    HttpApiEndpoint.get("sessionList", "/api/session", {
+      query: Query,
+      success: Json,
+      error: MockBadRequest.pipe(HttpApiSchema.status(400)),
+    }),
+  )
+  .add(HttpApiEndpoint.post("sessionCreate", "/api/session", { payload: JsonPayload, success: Json }))
+  .add(HttpApiEndpoint.get("sessionActive", "/api/session/active", { success: Json }))
+  .add(
+    HttpApiEndpoint.get("sessionGet", "/api/session/:sessionID", {
+      params: SessionParams,
+      success: Json,
+      error: MockNotFound.pipe(HttpApiSchema.status(404)),
+    }),
+  )
+  .add(
+    HttpApiEndpoint.delete("sessionRemove", "/api/session/:sessionID", {
+      params: SessionParams,
+      success: NoContent,
+    }),
+  )
+  .add(
+    HttpApiEndpoint.post("sessionShell", "/api/session/:sessionID/shell", {
+      params: SessionParams,
+      success: NoContent,
+    }),
+  )
+  .add(
+    HttpApiEndpoint.get("sessionForm", "/api/session/:sessionID/form", {
+      params: SessionParams,
+      success: Json,
+    }),
+  )
+  .add(
+    HttpApiEndpoint.post("sessionFormReply", "/api/session/:sessionID/form/:formID/reply", {
+      params: { ...SessionParams, formID: Schema.String },
+      payload: JsonPayload,
+      success: NoContent,
+    }),
+  )
+  .add(
+    HttpApiEndpoint.post("sessionFormCancel", "/api/session/:sessionID/form/:formID/cancel", {
+      params: { ...SessionParams, formID: Schema.String },
+      success: NoContent,
+    }),
+  )
+  .add(
+    HttpApiEndpoint.post("sessionBackground", "/api/session/:sessionID/background", {
+      params: SessionParams,
+      success: NoContent,
+    }),
+  )
+  .add(
+    HttpApiEndpoint.get("sessionInbox", "/api/session/:sessionID/inbox", {
+      params: SessionParams,
+      success: Json,
+    }),
+  )
+  .add(
+    HttpApiEndpoint.get("sessionPermission", "/api/session/:sessionID/permission", {
+      params: SessionParams,
+      success: Json,
+    }),
+  )
+  .add(
+    HttpApiEndpoint.post("sessionPermissionReply", "/api/session/:sessionID/permission/:permissionID/reply", {
+      params: { ...SessionParams, permissionID: Schema.String },
+      payload: JsonPayload,
+      success: NoContent,
+    }),
+  )
+  .add(
+    HttpApiEndpoint.post("sessionRename", "/api/session/:sessionID/rename", {
+      params: SessionParams,
+      payload: JsonPayload,
+      success: NoContent,
+    }),
+  )
+  .add(
+    HttpApiEndpoint.post("sessionInterrupt", "/api/session/:sessionID/interrupt", {
+      params: SessionParams,
+      success: NoContent,
+    }),
+  )
+  .add(
+    HttpApiEndpoint.post("sessionRevertStage", "/api/session/:sessionID/revert/stage", {
+      params: SessionParams,
+      payload: JsonPayload,
+      success: Json,
+      error: MockBadRequest.pipe(HttpApiSchema.status(400)),
+    }),
+  )
+  .add(
+    HttpApiEndpoint.post("sessionRevertClear", "/api/session/:sessionID/revert/clear", {
+      params: SessionParams,
+      success: NoContent,
+    }),
+  )
+  .add(
+    HttpApiEndpoint.post("sessionRevertCommit", "/api/session/:sessionID/revert/commit", {
+      params: SessionParams,
+      success: NoContent,
+    }),
+  )
+  .add(
+    HttpApiEndpoint.get("messageGet", "/api/session/:sessionID/message/:messageID", {
+      params: { ...SessionParams, messageID: Schema.String },
+      success: Json,
+      error: MockNotFound.pipe(HttpApiSchema.status(404)),
+    }),
+  )
+  .add(
+    HttpApiEndpoint.get("messageList", "/api/session/:sessionID/message", {
+      params: SessionParams,
+      query: Query,
+      success: Json,
+      error: MockBadRequest.pipe(HttpApiSchema.status(400)),
+    }),
+  )
+
+export const MockApi = HttpApi.make("mock").add(Group)
+
+function jsonValue(value: unknown): Schema.Json {
+  if (value === null || typeof value === "string" || typeof value === "boolean") return value
+  if (typeof value === "number") return Number.isFinite(value) ? value : null
+  if (Array.isArray(value)) return value.map(jsonValue)
+  if (!value || typeof value !== "object") return null
+  return Object.fromEntries(
+    Object.entries(value).flatMap(([key, item]) => (item === undefined ? [] : [[key, jsonValue(item)]])),
+  )
+}

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

@@ -1,5 +1,9 @@
-import type { Page, Route } from "@playwright/test"
+import type { Page } from "@playwright/test"
 import type { JsonValue, OpenCodeEvent, SessionMessageInfo } from "@opencode-ai/client/promise"
+import { Duration, Effect, Layer } from "effect"
+import { HttpRouter, HttpServer, HttpServerResponse } from "effect/unstable/http"
+import { HttpApiBuilder, HttpApiSchema } from "effect/unstable/httpapi"
+import { MockApi, MockBadRequest, MockNotFound } from "./mock-api"
 
 export interface MockServerConfig {
   provider: unknown | (() => unknown)
@@ -39,9 +43,8 @@ type MockStreamWindow = Window & {
 }
 
 export async function mockOpenCodeServer(page: Page, config: MockServerConfig) {
-  const cursors = new Map<string, string>()
+  const state = { cursors: new Map<string, string>(), nextCursor: 0 }
   const server = `http://${process.env.PLAYWRIGHT_SERVER_HOST ?? "127.0.0.1"}:${process.env.PLAYWRIGHT_SERVER_PORT ?? "4096"}`
-  let nextCursor = 0
 
   await page.addInitScript(
     ({ server, retry }) => {
@@ -128,316 +131,331 @@ export async function mockOpenCodeServer(page: Page, config: MockServerConfig) {
     }, 50)
     page.on("close", () => clearInterval(timer))
   }
+  const transport = HttpRouter.toWebHandler(
+    HttpApiBuilder.layer(MockApi).pipe(
+      Layer.provide(mockHandlers(config, state)),
+      Layer.provide(HttpServer.layerServices),
+    ),
+    { disableLogger: true },
+  )
+  page.on("close", () => void transport.dispose())
+
   await page.route("**/*", async (route) => {
     const url = new URL(route.request().url())
-    const targetPort = process.env.PLAYWRIGHT_SERVER_PORT ?? "4096"
     const appPort = new URL(
       process.env.PLAYWRIGHT_BASE_URL ?? `http://127.0.0.1:${process.env.PLAYWRIGHT_PORT ?? "3000"}`,
     ).port
     if (url.origin !== server && url.port !== appPort) return route.fallback()
-
-    const path = url.pathname
-    if (path === "/api/event") {
-      const events = config.events?.()
-      return sse(
-        route,
-        [{ id: "evt_mock_connected", type: "server.connected", data: {} }, ...(events ?? [])],
-        config.eventRetry,
-      )
+    if (route.request().method() === "OPTIONS") {
+      return route.fulfill({ status: 204, headers: corsHeaders })
     }
-    if (path === "/api/health") return json(route, { healthy: true, version: "2.0.0", pid: 1 })
-    if (path === "/api/reference")
-      return json(route, {
-        location: {
-          directory: config.directory,
-          project: {
+
+    const body = route.request().postDataBuffer()
+    const response = await transport.handler(
+      new Request(url, {
+        method: route.request().method(),
+        headers: route.request().headers(),
+        body: body ? Uint8Array.from(body) : undefined,
+      }),
+    )
+    if (response.status === 404 && url.origin !== server) return route.fallback()
+    return route.fulfill({
+      status: response.status,
+      headers: { ...Object.fromEntries(response.headers), ...corsHeaders },
+      body: Buffer.from(await response.arrayBuffer()),
+    })
+  })
+}
+
+const corsHeaders = {
+  "access-control-allow-origin": "*",
+  "access-control-allow-headers": "*",
+  "access-control-allow-methods": "GET, POST, PUT, DELETE, OPTIONS",
+  "access-control-expose-headers": "x-next-cursor",
+}
+
+function mockHandlers(config: MockServerConfig, state: { cursors: Map<string, string>; nextCursor: number }) {
+  const noContent = Effect.succeed(HttpApiSchema.NoContent.make())
+  const delay = config.messageDelay === undefined ? Effect.void : Effect.sleep(Duration.millis(config.messageDelay))
+  return HttpApiBuilder.group(MockApi, "mock", (handlers) =>
+    handlers
+      .handleRaw("event", () => {
+        const events = config.events?.()
+        const retry = config.eventRetry === undefined ? "" : `retry: ${config.eventRetry}\n\n`
+        const body = [{ id: "evt_mock_connected", type: "server.connected", data: {} }, ...(events ?? [])]
+          .map((event) => `data: ${JSON.stringify(event)}\n\n`)
+          .join("")
+        return Effect.succeed(HttpServerResponse.text(retry + body, { contentType: "text/event-stream" }))
+      })
+      .handleRaw("fsRead", (ctx) =>
+        Effect.gen(function* () {
+          const path = decodeURIComponent(new URL(ctx.request.url, "http://localhost").pathname.slice(13))
+          const value = yield* Effect.promise(() => Promise.resolve(config.fileContent?.(path)))
+          const content =
+            value && typeof value === "object" && "content" in value ? String(value.content) : String(value ?? "")
+          return HttpServerResponse.uint8Array(new TextEncoder().encode(content))
+        }),
+      )
+      .handleAll({
+        health: () => Effect.succeed({ healthy: true, version: "2.0.0", pid: 1 }),
+        reference: () =>
+          Effect.succeed({
+            location: {
+              directory: config.directory,
+              project: {
+                id: (config.project as { id?: string }).id,
+                directory: config.directory,
+                canonical: config.directory,
+              },
+            },
+            data: [],
+          }),
+        agent: () =>
+          Effect.succeed({
+            location: location(config),
+            data: [
+              {
+                id: "build",
+                name: "Build",
+                mode: "primary",
+                hidden: false,
+                request: { settings: {}, headers: {}, body: {} },
+                permissions: [],
+              },
+            ],
+          }),
+        provider: () => Effect.succeed({ location: location(config), data: currentProviders(providerConfig(config)) }),
+        model: () => Effect.succeed({ location: location(config), data: currentModels(providerConfig(config)) }),
+        modelDefault: () =>
+          Effect.succeed({ location: location(config), data: currentDefaultModel(providerConfig(config)) }),
+        integrationList: () => Effect.succeed({ location: location(config), data: [] }),
+        integrationGet: (ctx) =>
+          Effect.succeed({
+            location: location(config),
+            data: {
+              id: ctx.params.integrationID,
+              name: ctx.params.integrationID,
+              methods: config.integrationMethods?.[ctx.params.integrationID] ?? [{ type: "key", label: "API key" }],
+              connections: [],
+            },
+          }),
+        integrationConnect: (ctx) =>
+          Effect.sync(() => config.onConnectKey?.({ integrationID: ctx.params.integrationID, body: ctx.payload })).pipe(
+            Effect.andThen(noContent),
+          ),
+        credentialRemove: () => noContent,
+        command: () => Effect.succeed({ location: location(config), data: [] }),
+        skill: () => Effect.succeed({ location: location(config), data: [] }),
+        plugin: () => Effect.succeed({ location: location(config), data: [] }),
+        mcp: () => Effect.succeed({ location: location(config), data: [] }),
+        mcpResource: () => Effect.succeed({ location: location(config), data: { resources: [], templates: [] } }),
+        projectList: () => {
+          const project = config.project as typeof config.project & { canonical?: string; worktree?: string }
+          return Effect.succeed([{ ...project, canonical: project.canonical ?? project.worktree ?? config.directory }])
+        },
+        projectCurrent: () =>
+          Effect.succeed({
             id: (config.project as { id?: string }).id,
             directory: config.directory,
             canonical: config.directory,
-          },
+          }),
+        worktreeList: () =>
+          Effect.succeed([
+            { directory: config.directory },
+            ...((config.project as { sandboxes?: string[] }).sandboxes ?? []).map((directory) => ({
+              directory,
+              strategy: "git",
+            })),
+          ]),
+        worktreeCreate: (ctx) => {
+          const input = record(ctx.payload) ? ctx.payload : {}
+          return Effect.succeed({
+            directory: `${typeof input.directory === "string" ? input.directory : config.directory}/${
+              typeof input.name === "string" ? input.name : "copy"
+            }`,
+          })
         },
-        data: [],
-      })
-    if (path === "/api/agent")
-      return json(route, {
-        location: location(config),
-        data: [
-          {
-            id: "build",
-            name: "Build",
-            mode: "primary",
-            hidden: false,
-            request: { settings: {}, headers: {}, body: {} },
-            permissions: [],
-          },
-        ],
-      })
-    if (path === "/api/provider")
-      return json(route, {
-        location: location(config),
-        data: currentProviders(providerConfig(config)),
-      })
-    if (path === "/api/model")
-      return json(route, { location: location(config), data: currentModels(providerConfig(config)) })
-    if (path === "/api/model/default")
-      return json(route, { location: location(config), data: currentDefaultModel(providerConfig(config)) })
-    if (path === "/api/integration") return json(route, { location: location(config), data: [] })
-    if (path === "/api/command") return json(route, { location: location(config), data: [] })
-    if (path === "/api/skill") return json(route, { location: location(config), data: [] })
-    if (path === "/api/plugin") return json(route, { location: location(config), data: [] })
-    if (path === "/api/mcp") return json(route, { location: location(config), data: [] })
-    if (path === "/api/mcp/resource")
-      return json(route, { location: location(config), data: { resources: [], templates: [] } })
-    const integration = path.match(/^\/api\/integration\/([^/]+)$/)?.[1]
-    if (integration && route.request().method() === "GET")
-      return json(route, {
-        location: location(config),
-        data: {
-          id: integration,
-          name: integration,
-          methods: config.integrationMethods?.[integration] ?? [{ type: "key", label: "API key" }],
-          connections: [],
-        },
-      })
-    const integrationConnect = path.match(/^\/api\/integration\/([^/]+)\/connect\/key$/)?.[1]
-    if (integrationConnect && route.request().method() === "POST") {
-      config.onConnectKey?.({ integrationID: integrationConnect, body: route.request().postDataJSON() })
-      return route.fulfill({ status: 204, headers: { "access-control-allow-origin": "*" } })
-    }
-    if (/^\/api\/credential\/[^/]+$/.test(path) && route.request().method() === "DELETE")
-      return route.fulfill({ status: 204, headers: { "access-control-allow-origin": "*" } })
-    if (path === "/api/project") {
-      const project = config.project as typeof config.project & { canonical?: string; worktree?: string }
-      return json(route, [
-        {
-          ...project,
-          canonical: project.canonical ?? project.worktree ?? config.directory,
-        },
-      ])
-    }
-    if (path === "/api/project/current")
-      return json(route, {
-        id: (config.project as { id?: string }).id,
-        directory: config.directory,
-        canonical: config.directory,
-      })
-    const worktree = path.match(/^\/api\/worktree\/([^/]+)$/)?.[1]
-    if (worktree && route.request().method() === "GET")
-      return json(route, [
-        { directory: config.directory },
-        ...((config.project as { sandboxes?: string[] }).sandboxes ?? []).map((directory) => ({
-          directory,
-          strategy: "git",
-        })),
-      ])
-    if (path === "/api/location") return json(route, location(config))
-    if (worktree && route.request().method() === "POST") {
-      const input = route.request().postDataJSON() as { directory: string; name?: string }
-      return json(route, { directory: `${input.directory}/${input.name ?? "copy"}` })
-    }
-    if (worktree && route.request().method() === "DELETE")
-      return route.fulfill({ status: 204, headers: { "access-control-allow-origin": "*" } })
-    if (/^\/api\/worktree\/[^/]+\/refresh$/.test(path))
-      return route.fulfill({ status: 204, headers: { "access-control-allow-origin": "*" } })
-    if (path === "/api/permission/request")
-      return json(route, {
-        location: location(config),
-        data: (typeof config.permissions === "function" ? config.permissions() : (config.permissions ?? [])).map(
-          currentPermission,
-        ),
-      })
-    if (path === "/api/form/request")
-      return json(route, {
-        location: location(config),
-        data: typeof config.forms === "function" ? config.forms() : (config.forms ?? []),
-      })
-    if (path === "/api/vcs")
-      return json(route, { location: location(config), data: { branch: { current: "main", default: "main" } } })
-    if (path === "/api/vcs/status") return json(route, { location: location(config), data: [] })
-    if (path === "/api/vcs/diff") return json(route, { location: location(config), data: config.vcsDiff ?? [] })
-    if (path === "/api/fs/list" && config.fileList)
-      return json(route, {
-        location: location(config),
-        data: await config.fileList(url.searchParams.get("path") ?? ""),
-      })
-    const fileRead = path.match(/^\/api\/fs\/read\/(.+)$/)?.[1]
-    if (fileRead && config.fileContent) {
-      const value = await config.fileContent(decodeURIComponent(fileRead))
-      const content =
-        value && typeof value === "object" && "content" in value ? String(value.content) : String(value ?? "")
-      return route.fulfill({ status: 200, body: content, headers: { "content-type": "application/octet-stream" } })
-    }
-    if (path === "/api/fs/find" && config.findFiles) {
-      const entries = await config.findFiles({
-        query: url.searchParams.get("query") ?? "",
-        dirs: url.searchParams.get("type") ?? undefined,
-        limit: url.searchParams.has("limit") ? Number(url.searchParams.get("limit")) : undefined,
-      })
-      return json(route, {
-        location: location(config),
-        data: Array.isArray(entries)
-          ? entries.map((entry) =>
-              typeof entry === "string"
-                ? {
-                    name: entry.split(/[\\/]/).at(-1) ?? entry,
-                    path: entry,
-                    absolute: `${config.directory}/${entry}`,
-                    type: "directory",
-                    ignored: false,
-                  }
-                : entry,
-            )
-          : entries,
-      })
-    }
-    if (path === "/api/shell" && route.request().method() === "GET")
-      return json(route, { location: location(config), data: [] })
-    if (/^\/api\/pty\/[^/]+\/connect-token$/.test(path))
-      return json(route, { location: location(config), data: { ticket: "e2e-ticket", expires_in: 60 } })
-    if (path === "/api/session") {
-      if (route.request().method() === "POST") {
-        const payload = route.request().postDataJSON() as Record<string, unknown>
-        const created = currentSession(
-          {
-            id: "ses_mock_created",
-            projectID: (config.project as { id?: string }).id,
-            title: typeof payload.title === "string" ? payload.title : "New session",
-            parentID: typeof payload.parentID === "string" ? payload.parentID : undefined,
-          },
-          config.directory,
-        )
-        config.sessions.push(created)
-        return json(route, { data: created })
-      }
-      if (route.request().method() !== "GET") return route.fallback()
-      const directory = url.searchParams.get("directory")
-      const parentID = url.searchParams.get("parentID")
-      const limit = Number(url.searchParams.get("limit") ?? 50)
-      const offset = Number(url.searchParams.get("cursor") ?? 0)
-      const sessions = config.sessions
-        .filter((session) => {
-          const location = session.location as { directory?: string } | undefined
-          return !directory || location?.directory === directory || session.directory === directory
-        })
-        .filter((session) => {
-          if (parentID === null) return true
-          if (parentID === "null") return session.parentID === undefined
-          return session.parentID === parentID
-        })
-        .filter((session) => {
-          const search = url.searchParams.get("search")?.toLowerCase()
-          return (
-            !search ||
-            String(session.title ?? "")
-              .toLowerCase()
-              .includes(search)
-          )
-        })
-      const ordered = url.searchParams.get("order") === "asc" ? sessions : sessions.toReversed()
-      const data = ordered.slice(offset, offset + limit)
-      const next = offset + limit < ordered.length ? String(offset + limit) : undefined
-      return json(route, {
-        data: data.map((session) => currentSession(session, config.directory)),
-        cursor: { next },
-      })
-    }
-    if (path === "/api/session/active") {
-      const statuses = (
-        typeof config.sessionStatus === "function" ? config.sessionStatus() : (config.sessionStatus ?? {})
-      ) as Record<string, { type?: string }>
-      return json(route, {
-        data: Object.fromEntries(
-          Object.entries(statuses).flatMap(([id, status]) =>
-            status.type === "idle" ? [] : [[id, { type: "running" }]],
+        worktreeRemove: () => noContent,
+        worktreeRefresh: () => noContent,
+        location: () => Effect.succeed(location(config)),
+        permissionRequests: () =>
+          Effect.succeed({
+            location: location(config),
+            data: (typeof config.permissions === "function" ? config.permissions() : (config.permissions ?? [])).map(
+              currentPermission,
+            ),
+          }),
+        formRequests: () =>
+          Effect.succeed({
+            location: location(config),
+            data: typeof config.forms === "function" ? config.forms() : (config.forms ?? []),
+          }),
+        vcs: () =>
+          Effect.succeed({ location: location(config), data: { branch: { current: "main", default: "main" } } }),
+        vcsStatus: () => Effect.succeed({ location: location(config), data: [] }),
+        vcsDiff: () => Effect.succeed({ location: location(config), data: config.vcsDiff ?? [] }),
+        fsList: (ctx) =>
+          Effect.promise(() => Promise.resolve(config.fileList?.(ctx.query.path ?? ""))).pipe(
+            Effect.map((data) => ({ location: location(config), data })),
           ),
-        ),
-      })
-    }
-    if (/^\/api\/session\/[^/]+\/shell$/.test(path) && route.request().method() === "POST") {
-      return route.fulfill({ status: 204, headers: { "access-control-allow-origin": "*" } })
-    }
-    const sessionForm = path.match(/^\/api\/session\/([^/]+)\/form$/)?.[1]
-    if (sessionForm && route.request().method() === "GET") {
-      const forms = typeof config.forms === "function" ? config.forms() : (config.forms ?? [])
-      return json(route, { data: forms.filter((form) => (form as { sessionID?: string }).sessionID === sessionForm) })
-    }
-    if (/^\/api\/session\/[^/]+\/form\/[^/]+\/(reply|cancel)$/.test(path) && route.request().method() === "POST") {
-      return route.fulfill({ status: 204, headers: { "access-control-allow-origin": "*" } })
-    }
-    if (/^\/api\/session\/[^/]+\/background$/.test(path) && route.request().method() === "POST")
-      return route.fulfill({ status: 204, headers: { "access-control-allow-origin": "*" } })
-    if (/^\/api\/session\/[^/]+\/inbox$/.test(path) && route.request().method() === "GET")
-      return json(route, { data: [] })
-    const sessionPermission = path.match(/^\/api\/session\/([^/]+)\/permission$/)?.[1]
-    if (sessionPermission && route.request().method() === "GET") {
-      const permissions = typeof config.permissions === "function" ? config.permissions() : (config.permissions ?? [])
-      return json(route, {
-        data: permissions.map(currentPermission).filter((permission) => permission.sessionID === sessionPermission),
-      })
-    }
-    if (/^\/api\/session\/[^/]+\/permission\/[^/]+\/reply$/.test(path) && route.request().method() === "POST") {
-      return route.fulfill({ status: 204, headers: { "access-control-allow-origin": "*" } })
-    }
-    if (
-      /^\/api\/session\/[^/]+\/(rename|interrupt|revert\/clear|revert\/commit)$/.test(path) &&
-      route.request().method() === "POST"
-    ) {
-      return route.fulfill({ status: 204, headers: { "access-control-allow-origin": "*" } })
-    }
-    const revertStage = path.match(/^\/api\/session\/([^/]+)\/revert\/stage$/)?.[1]
-    if (revertStage && route.request().method() === "POST") {
-      const body = route.request().postDataJSON()
-      if (!body || typeof body !== "object" || !("messageID" in body) || typeof body.messageID !== "string") {
-        return json(route, { error: "Invalid revert request" }, undefined, 400)
-      }
-      config.onRevertStage?.({ sessionID: revertStage, messageID: body.messageID })
-      return json(route, { data: { messageID: body.messageID } })
-    }
-    if (/^\/api\/session\/[^/]+$/.test(path) && route.request().method() === "DELETE") {
-      return route.fulfill({ status: 204, headers: { "access-control-allow-origin": "*" } })
-    }
-    const currentSessionMatch = path.match(/^\/api\/session\/([^/]+)$/)
-    if (currentSessionMatch) {
-      const session = config.sessions.find((item) => item.id === currentSessionMatch[1])
-      if (!session) return json(route, { error: "Session not found" }, undefined, 404)
-      return json(route, {
-        data: currentSession(session, config.directory),
-      })
-    }
-
-    const messageMatch = path.match(/^\/api\/session\/([^/]+)\/message\/([^/]+)$/)
-    if (messageMatch) {
-      config.onMessage?.({ sessionID: messageMatch[1]!, messageID: messageMatch[2]! })
-      if (config.messageDelay !== undefined) await new Promise((resolve) => setTimeout(resolve, config.messageDelay))
-      const message =
-        config.message?.(messageMatch[1]!, messageMatch[2]!) ??
-        config.pageMessages(messageMatch[1]!, Number.MAX_SAFE_INTEGER).items.find((item) => item.id === messageMatch[2])
-      if (message === undefined) return json(route, { error: "Message not found" }, undefined, 404)
-      return json(route, { data: message })
-    }
-
-    const messagesMatch = path.match(/^\/api\/session\/([^/]+)\/message$/)
-    if (messagesMatch) {
-      const token = url.searchParams.get("cursor") ?? undefined
-      const before = token ? cursors.get(token) : undefined
-      if (token && !before) return json(route, { error: "Invalid cursor" }, undefined, 400)
-      config.onMessages?.({ sessionID: messagesMatch[1], before, phase: "start" })
-      await config.beforeMessagesResponse?.({ sessionID: messagesMatch[1]!, before })
-      if (config.messageDelay !== undefined) await new Promise((resolve) => setTimeout(resolve, config.messageDelay))
-      const pageData = config.pageMessages(messagesMatch[1], Number(url.searchParams.get("limit") ?? 50), before)
-      config.onMessages?.({ sessionID: messagesMatch[1], before, phase: "end" })
-      const cursor = pageData.cursor ? `cursor_${++nextCursor}` : undefined
-      if (cursor) cursors.set(cursor, pageData.cursor!)
-      return json(route, {
-        data: url.searchParams.get("order") === "asc" ? pageData.items : pageData.items.toReversed(),
-        cursor: { next: cursor },
-      })
-    }
-
-    if (url.port === targetPort && targetPort !== appPort)
-      return json(route, { error: `Unhandled mock route: ${path}` }, undefined, 404)
-    return route.fallback()
-  })
+        fsFind: (ctx) =>
+          Effect.promise(() =>
+            Promise.resolve(
+              config.findFiles?.({ query: ctx.query.query ?? "", dirs: ctx.query.type, limit: ctx.query.limit }),
+            ),
+          ).pipe(
+            Effect.map((entries) => ({
+              location: location(config),
+              data: Array.isArray(entries)
+                ? entries.map((entry) =>
+                    typeof entry === "string"
+                      ? {
+                          name: entry.split(/[\\/]/).at(-1) ?? entry,
+                          path: entry,
+                          absolute: `${config.directory}/${entry}`,
+                          type: "directory",
+                          ignored: false,
+                        }
+                      : entry,
+                  )
+                : entries,
+            })),
+          ),
+        shell: () => Effect.succeed({ location: location(config), data: [] }),
+        ptyConnectToken: () =>
+          Effect.succeed({ location: location(config), data: { ticket: "e2e-ticket", expires_in: 60 } }),
+        sessionList: (ctx) => {
+          const sessions = config.sessions
+            .filter((session) => {
+              const location = session.location as { directory?: string } | undefined
+              return (
+                !ctx.query.directory ||
+                location?.directory === ctx.query.directory ||
+                session.directory === ctx.query.directory
+              )
+            })
+            .filter((session) => {
+              if (ctx.query.parentID === undefined) return true
+              if (ctx.query.parentID === "null") return session.parentID === undefined
+              return session.parentID === ctx.query.parentID
+            })
+            .filter((session) =>
+              ctx.query.search === undefined
+                ? true
+                : String(session.title ?? "")
+                    .toLowerCase()
+                    .includes(ctx.query.search.toLowerCase()),
+            )
+          const ordered = ctx.query.order === "asc" ? sessions : sessions.toReversed()
+          const offset = Number(ctx.query.cursor ?? 0)
+          const limit = ctx.query.limit ?? 50
+          const data = ordered.slice(offset, offset + limit)
+          return Effect.succeed({
+            data: data.map((session) => currentSession(session, config.directory)),
+            cursor: { next: offset + limit < ordered.length ? String(offset + limit) : undefined },
+          })
+        },
+        sessionCreate: (ctx) => {
+          const payload = record(ctx.payload) ? ctx.payload : {}
+          const created = currentSession(
+            {
+              id: "ses_mock_created",
+              projectID: (config.project as { id?: string }).id,
+              title: typeof payload.title === "string" ? payload.title : "New session",
+              parentID: typeof payload.parentID === "string" ? payload.parentID : undefined,
+            },
+            config.directory,
+          )
+          return Effect.sync(() => config.sessions.push(created)).pipe(Effect.as({ data: created }))
+        },
+        sessionActive: () => {
+          const statuses = (
+            typeof config.sessionStatus === "function" ? config.sessionStatus() : (config.sessionStatus ?? {})
+          ) as Record<string, { type?: string }>
+          return Effect.succeed({
+            data: Object.fromEntries(
+              Object.entries(statuses).flatMap(([id, status]) =>
+                status.type === "idle" ? [] : [[id, { type: "running" }]],
+              ),
+            ),
+          })
+        },
+        sessionGet: (ctx) => {
+          const session = config.sessions.find((item) => item.id === ctx.params.sessionID)
+          return session
+            ? Effect.succeed({ data: currentSession(session, config.directory) })
+            : Effect.fail(new MockNotFound({ message: "Session not found" }))
+        },
+        sessionRemove: () => noContent,
+        sessionShell: () => noContent,
+        sessionForm: (ctx) => {
+          const forms = typeof config.forms === "function" ? config.forms() : (config.forms ?? [])
+          return Effect.succeed({
+            data: forms.filter((form) => (form as { sessionID?: string }).sessionID === ctx.params.sessionID),
+          })
+        },
+        sessionFormReply: () => noContent,
+        sessionFormCancel: () => noContent,
+        sessionBackground: () => noContent,
+        sessionInbox: () => Effect.succeed({ data: [] }),
+        sessionPermission: (ctx) => {
+          const permissions =
+            typeof config.permissions === "function" ? config.permissions() : (config.permissions ?? [])
+          return Effect.succeed({
+            data: permissions
+              .map(currentPermission)
+              .filter((permission) => permission.sessionID === ctx.params.sessionID),
+          })
+        },
+        sessionPermissionReply: () => noContent,
+        sessionRename: () => noContent,
+        sessionInterrupt: () => noContent,
+        sessionRevertStage: (ctx) => {
+          const payload = record(ctx.payload) ? ctx.payload : {}
+          const messageID = payload.messageID
+          if (typeof messageID !== "string") {
+            return Effect.fail(new MockBadRequest({ message: "Invalid revert request" }))
+          }
+          return Effect.sync(() => config.onRevertStage?.({ sessionID: ctx.params.sessionID, messageID })).pipe(
+            Effect.as({ data: { messageID } }),
+          )
+        },
+        sessionRevertClear: () => noContent,
+        sessionRevertCommit: () => noContent,
+        messageGet: (ctx) =>
+          Effect.gen(function* () {
+            config.onMessage?.({ sessionID: ctx.params.sessionID, messageID: ctx.params.messageID })
+            yield* delay
+            const message =
+              config.message?.(ctx.params.sessionID, ctx.params.messageID) ??
+              config
+                .pageMessages(ctx.params.sessionID, Number.MAX_SAFE_INTEGER)
+                .items.find((item) => item.id === ctx.params.messageID)
+            if (!message) return yield* new MockNotFound({ message: "Message not found" })
+            return { data: message }
+          }),
+        messageList: (ctx) => {
+          const token = ctx.query.cursor
+          const before = token ? state.cursors.get(token) : undefined
+          if (token && !before) return Effect.fail(new MockBadRequest({ message: "Invalid cursor" }))
+          return Effect.gen(function* () {
+            config.onMessages?.({ sessionID: ctx.params.sessionID, before, phase: "start" })
+            if (config.beforeMessagesResponse) {
+              yield* Effect.promise(() => config.beforeMessagesResponse!({ sessionID: ctx.params.sessionID, before }))
+            }
+            yield* delay
+            const pageData = config.pageMessages(ctx.params.sessionID, ctx.query.limit ?? 50, before)
+            config.onMessages?.({ sessionID: ctx.params.sessionID, before, phase: "end" })
+            const cursor = pageData.cursor ? `cursor_${++state.nextCursor}` : undefined
+            if (cursor) state.cursors.set(cursor, pageData.cursor!)
+            return {
+              data: ctx.query.order === "asc" ? pageData.items : pageData.items.toReversed(),
+              cursor: { next: cursor },
+            }
+          })
+        },
+      }),
+  )
 }
 
 function location(config: MockServerConfig) {
@@ -595,24 +613,3 @@ function jsonValue(value: unknown): JsonValue | undefined {
 function record(value: unknown): value is Record<string, unknown> {
   return !!value && typeof value === "object" && !Array.isArray(value)
 }
-
-function json(route: Route, body: unknown, headers?: Record<string, string>, status = 200) {
-  return route.fulfill({
-    status,
-    contentType: "application/json",
-    headers: {
-      "access-control-allow-origin": "*",
-      "access-control-expose-headers": "x-next-cursor",
-      ...headers,
-    },
-    body: JSON.stringify(body ?? null),
-  })
-}
-
-function sse(route: Route, events?: unknown[], retry?: number) {
-  return route.fulfill({
-    status: 200,
-    contentType: "text/event-stream",
-    body: `${retry === undefined ? "" : `retry: ${retry}\n\n`}${events?.map((event) => `data: ${JSON.stringify(event)}\n\n`).join("") || ": ok\n\n"}`,
-  })
-}

packages/app/package.json

@@ -6,10 +6,10 @@
   "exports": {
     ".": "./src/index.ts",
     "./desktop": "./src/desktop.ts",
-    "./desktop-menu": "./src/desktop-menu.ts",
-    "./i18n/desktop-native": "./src/i18n/desktop-native.ts",
-    "./updater": "./src/updater.ts",
-    "./wsl/types": "./src/wsl/types.ts",
+    "./desktop-menu": "./src/shell/commands/desktop-menu.ts",
+    "./i18n/desktop-native": "./src/runtime/i18n/desktop-native.ts",
+    "./updater": "./src/shell/updates/types.ts",
+    "./wsl/types": "./src/servers/wsl/types.ts",
     "./vite": "./vite.js",
     "./index.css": "./src/index.css"
   },
@@ -48,9 +48,11 @@
     "typescript": "catalog:",
     "vite": "8.2.1",
     "vite-plugin-icons-spritesheet": "3.0.1",
+    "vite-plugin-pwa": "1.3.0",
     "vite-plugin-solid": "2.11.14"
   },
   "dependencies": {
+    "@ibm/plex": "6.4.1",
     "@corvu/drawer": "catalog:",
     "@dnd-kit/abstract": "0.5.0",
     "@dnd-kit/dom": "0.5.0",

packages/app/public/_headers

@@ -15,3 +15,14 @@
 
 /*.css
   Content-Type: text/css
+
+/site.webmanifest
+  Content-Type: application/manifest+json
+
+/sw.js
+  Content-Type: application/javascript
+  Cache-Control: no-cache
+
+/registerSW.js
+  Content-Type: application/javascript
+  Cache-Control: no-cache

packages/app/src/app.tsx

@@ -4,72 +4,26 @@ import { FileComponentProvider } from "@opencode-ai/ui/context/file"
 import { Font } from "@opencode-ai/ui/font"
 import { ThemeProvider } from "@opencode-ai/ui/theme/context"
 import { MetaProvider } from "@solidjs/meta"
-import { type BaseRouterProps, Route, Router, useParams } from "@solidjs/router"
+import { type BaseRouterProps, Router } from "@solidjs/router"
 import { QueryClient, QueryClientProvider } from "@tanstack/solid-query"
-import {
-  type Component,
-  createMemo,
-  createRenderEffect,
-  ErrorBoundary,
-  type JSX,
-  lazy,
-  type ParentProps,
-  Show,
-} from "solid-js"
+import { type Component, createRenderEffect, ErrorBoundary, type JSX, type ParentProps } from "solid-js"
 import { Dynamic } from "solid-js/web"
-import { CommandProvider, useCommand, type CommandOption } from "@/context/command"
-import { GlobalProvider, useGlobal } from "@/context/global"
-import { HighlightsProvider } from "@/context/highlights"
-import { LanguageProvider, UiI18nBridge, type Locale, useLanguage } from "@/context/language"
-import { LayoutProvider } from "@/context/layout"
-import { usePlatform } from "@/context/platform"
-import { ServerConnection, ServersProvider } from "@/context/servers"
-import { SettingsProvider } from "@/context/settings"
-import { TabsProvider } from "@/context/tabs"
-import { WslServersProvider } from "@/wsl/context"
-import Layout from "@/pages/layout"
-import { ErrorPage } from "./pages/error"
-import { requireServerKey } from "./utils/session-route"
+import { CommandProvider } from "@/shell/commands/command"
+import { DesktopCommands } from "@/shell/commands/desktop"
+import { GlobalProvider } from "@/runtime/server/runtime"
+import { HighlightsProvider } from "@/shell/updates/highlights"
+import { LanguageProvider, UiI18nBridge, type Locale } from "@/runtime/i18n/language"
+import { ServerConnection, ServersProvider } from "@/runtime/server/registry"
+import { SettingsProvider } from "@/settings/model"
+import { TabsProvider } from "@/shell/tabs/tabs"
+import { WslServersProvider } from "@/servers/wsl/context"
+import { ErrorPage } from "@/shell/errors/error"
+import { AppRoutes, File, preloadRoute } from "@/shell/routes/routes"
 
-import { Home } from "@/pages/home"
-import { ServerProvider } from "./context/server"
-
-const File = lazy(() => import("@opencode-ai/session-ui/file").then((module) => ({ default: module.File })))
-const loadDraftRoute = () => Promise.all([import("@/pages/draft-route"), File.preload()]).then(([module]) => module)
-const loadSessionRoute = () => Promise.all([import("@/session/route"), File.preload()]).then(([module]) => module)
-const DraftRoute = lazy(() => loadDraftRoute().then((module) => ({ default: module.DraftRoute })))
-const TargetSessionRouteContent = lazy(() =>
-  loadSessionRoute().then((module) => ({ default: module.TargetSessionRouteContent })),
-)
-
-export function preloadRoute(url: string) {
-  const pathname = url.split(/[?#]/, 1)[0]
-  if (pathname === "/new-session") return DraftRoute.preload().then(() => undefined)
-  if (/^\/server\/[^/]+\/session\/[^/]+$/.test(pathname))
-    return TargetSessionRouteContent.preload().then(() => undefined)
-  return Promise.resolve()
-}
-
-function TargetServerRoute(props: ParentProps) {
-  const params = useParams<{ serverKey: string }>()
-  const global = useGlobal()
-  const conn = createMemo(() =>
-    global.servers.list().find((item) => ServerConnection.key(item) === requireServerKey(params.serverKey)),
-  )
-
-  return (
-    // Owns the server-identity remount. Session changes must not remount this subtree.
-    <Show when={conn()} keyed>
-      {(conn) => <ServerProvider conn={conn}>{props.children}</ServerProvider>}
-    </Show>
-  )
-}
+export { preloadRoute }
 
 declare global {
   interface Window {
-    __OPENCODE__?: {
-      deepLinks?: string[]
-    }
     api?: {
       setTitlebar?: (theme: { mode: "light" | "dark"; scheme?: "system" | "light" | "dark" }) => Promise<void>
       exportDebugLogs?: () => Promise<string>
@@ -100,39 +54,6 @@ function BodyTypography() {
   return null
 }
 
-// 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 DesktopCommands() {
-  const command = useCommand()
-  const language = useLanguage()
-  const platform = usePlatform()
-
-  command.register("desktop", () => {
-    const commands: CommandOption[] = []
-    if (platform.platform === "desktop" && platform.exportDebugLogs) {
-      commands.push({
-        id: "logs.export",
-        title: language.t("command.logs.export"),
-        category: language.t("command.category.settings"),
-        onSelect: () => {
-          void platform.exportDebugLogs?.()
-        },
-      })
-    }
-    return commands
-  })
-
-  return null
-}
-
-function AppLayout(props: ParentProps) {
-  return (
-    <LayoutProvider>
-      <Layout>{props.children}</Layout>
-    </LayoutProvider>
-  )
-}
-
 export function AppBaseProviders(
   props: ParentProps<{
     locale?: Locale
@@ -204,18 +125,7 @@ export function AppInterface(props: {
       <SettingsProvider>
         <GlobalProvider>
           <Dynamic component={props.router ?? Router} root={Root}>
-            <Route component={AppLayout}>
-              <Route path="/" component={Home} />
-              <Route
-                path="/server/:serverKey/session/:id"
-                component={() => (
-                  <TargetServerRoute>
-                    <TargetSessionRouteContent />
-                  </TargetServerRoute>
-                )}
-              />
-              <Route path="/new-session" component={DraftRoute} />
-            </Route>
+            <AppRoutes />
           </Dynamic>
         </GlobalProvider>
       </SettingsProvider>

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

@@ -1,261 +0,0 @@
-import { Button } from "@opencode-ai/ui/button"
-import { Menu } from "@opencode-ai/ui/menu"
-import { Icon } from "@opencode-ai/ui/icon"
-import { IconButton } from "@opencode-ai/ui/icon-button"
-import { List } from "@opencode-ai/ui/list"
-import { TextField } from "@opencode-ai/ui/text-field"
-import { Show } from "solid-js"
-import { ServerHealthIndicator, ServerRow } from "@/components/server/server-row"
-import { useLanguage } from "@/context/language"
-import { ServerConnection } from "@/context/servers"
-import { ServerCollectionController } from "@/components/server/server-management-controller"
-
-type ServerConnectionFormController = {
-  state: {
-    adding: () => boolean
-    busy: () => boolean
-    value: () => string
-    name: () => string
-    username: () => string
-    password: () => string
-    error: () => string
-    status: () => boolean | undefined
-  }
-  change: {
-    value: (value: string) => void
-    name: (value: string) => void
-    username: (value: string) => void
-    password: (value: string) => void
-  }
-  reset: () => void
-  submit: () => void
-}
-
-interface ServerFormProps {
-  value: string
-  name: string
-  username: string
-  password: string
-  placeholder: string
-  busy: boolean
-  error: string
-  status: boolean | undefined
-  onChange: (value: string) => void
-  onNameChange: (value: string) => void
-  onUsernameChange: (value: string) => void
-  onPasswordChange: (value: string) => void
-  onSubmit: () => void
-  onBack: () => void
-}
-
-function ServerForm(props: ServerFormProps) {
-  const language = useLanguage()
-  const keyDown = (event: KeyboardEvent) => {
-    event.stopPropagation()
-    if (event.key === "Escape") {
-      event.preventDefault()
-      props.onBack()
-      return
-    }
-    if (event.key !== "Enter" || event.isComposing) return
-    event.preventDefault()
-    props.onSubmit()
-  }
-
-  return (
-    <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
-            type="text"
-            label={language.t("dialog.server.add.url")}
-            placeholder={props.placeholder}
-            value={props.value}
-            autofocus
-            validationState={props.error ? "invalid" : "valid"}
-            error={props.error}
-            disabled={props.busy}
-            onChange={props.onChange}
-            onKeyDown={keyDown}
-          />
-        </div>
-        <TextField
-          type="text"
-          label={language.t("dialog.server.add.name")}
-          placeholder={language.t("dialog.server.add.namePlaceholder")}
-          defaultValue={props.name}
-          disabled={props.busy}
-          onChange={props.onNameChange}
-          onKeyDown={keyDown}
-        />
-        <div class="grid grid-cols-2 gap-2 min-w-0">
-          <TextField
-            type="text"
-            label={language.t("dialog.server.add.username")}
-            placeholder={language.t("dialog.server.add.usernamePlaceholder")}
-            defaultValue={props.username}
-            disabled={props.busy}
-            onChange={props.onUsernameChange}
-            onKeyDown={keyDown}
-          />
-          <TextField
-            type="password"
-            label={language.t("dialog.server.add.password")}
-            placeholder={language.t("dialog.server.add.passwordPlaceholder")}
-            defaultValue={props.password}
-            disabled={props.busy}
-            onChange={props.onPasswordChange}
-            onKeyDown={keyDown}
-          />
-        </div>
-      </div>
-    </div>
-  )
-}
-
-export function ServerConnectionList(props: {
-  domain: ServerCollectionController
-  onAdd: () => void
-  onEdit: (server: ServerConnection.Http) => void
-}) {
-  const language = useLanguage()
-
-  return (
-    <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.domain.collection.items}
-        key={(x) => x.http.url}
-        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.domain.collection.health()[key]} />
-              </div>
-              <ServerRow
-                conn={i}
-                dimmed={props.domain.collection.health()[key]?.healthy === false}
-                status={props.domain.collection.health()[key]}
-                class="flex items-center gap-3 min-w-0 flex-1"
-                badge={
-                  <Show when={props.domain.defaults.key() === 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={i.type === "http"}>
-                  <Menu appearance="standard">
-                    <Menu.Trigger
-                      as={IconButton}
-                      icon={<Icon name="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()}
-                    />
-                    <Menu.Portal>
-                      <Menu.Content class="mt-1">
-                        <Menu.Item
-                          onSelect={() => {
-                            if (i.type !== "http") return
-                            props.onEdit(i)
-                          }}
-                        >
-                          {language.t("dialog.server.menu.edit")}
-                        </Menu.Item>
-                        <Show when={props.domain.defaults.available() && props.domain.defaults.key() !== key}>
-                          <Menu.Item onSelect={() => props.domain.defaults.set(key)}>
-                            {language.t("dialog.server.menu.default")}
-                          </Menu.Item>
-                        </Show>
-                        <Show when={props.domain.defaults.available() && props.domain.defaults.key() === key}>
-                          <Menu.Item onSelect={() => props.domain.defaults.set(null)}>
-                            {language.t("dialog.server.menu.defaultRemove")}
-                          </Menu.Item>
-                        </Show>
-                        <Show when={props.domain.connection.canRemove(key)}>
-                          <Menu.Separator />
-                          <Menu.Item
-                            onSelect={() => props.domain.connection.remove(key)}
-                            class="text-text-on-critical-base hover:bg-surface-critical-weak"
-                          >
-                            {language.t("dialog.server.menu.delete")}
-                          </Menu.Item>
-                        </Show>
-                      </Menu.Content>
-                    </Menu.Portal>
-                  </Menu>
-                </Show>
-              </div>
-            </div>
-          )
-        }}
-      </List>
-
-      <div class="shrink-0 pb-5">
-        <Button
-          variant="neutral"
-          icon="plus-small"
-          size="large"
-          onClick={props.onAdd}
-          class="py-1.5 pl-1.5 pr-3 flex items-center gap-1.5"
-        >
-          {language.t("dialog.server.add.button")}
-        </Button>
-      </div>
-    </div>
-  )
-}
-
-export function ServerConnectionForm(props: { form: ServerConnectionFormController }) {
-  const language = useLanguage()
-
-  return (
-    <div class="flex flex-1 min-h-0 flex-col gap-4">
-      <ServerForm
-        value={props.form.state.value()}
-        name={props.form.state.name()}
-        username={props.form.state.username()}
-        password={props.form.state.password()}
-        placeholder={language.t("dialog.server.add.placeholder")}
-        busy={props.form.state.busy()}
-        error={props.form.state.error()}
-        status={props.form.state.status()}
-        onChange={props.form.change.value}
-        onNameChange={props.form.change.name}
-        onUsernameChange={props.form.change.username}
-        onPasswordChange={props.form.change.password}
-        onSubmit={props.form.submit}
-        onBack={props.form.reset}
-      />
-      <div class="shrink-0 pb-5">
-        <Button
-          variant="contrast"
-          size="large"
-          onClick={props.form.submit}
-          disabled={props.form.state.busy()}
-          class="px-3 py-1.5"
-        >
-          {props.form.state.busy()
-            ? language.t("dialog.server.add.checking")
-            : props.form.state.adding()
-              ? language.t("dialog.server.add.button")
-              : language.t("common.save")}
-        </Button>
-      </div>
-    </div>
-  )
-}

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

@@ -1,5 +0,0 @@
-import { type Component, type JSX } from "solid-js"
-
-export const SettingsList: Component<{ children: JSX.Element }> = (props) => {
-  return <div class="bg-surface-base px-4 rounded-lg">{props.children}</div>
-}

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

@@ -1 +0,0 @@
-export { DialogSettings } from "./dialog-settings-v2"

packages/app/src/components/settings-v2/parts/list.tsx

@@ -1,6 +0,0 @@
-import type { Component, JSX } from "solid-js"
-import "../settings-v2.css"
-
-export const SettingsListV2: Component<{ children: JSX.Element }> = (props) => {
-  return <div data-component="settings-v2-list">{props.children}</div>
-}

packages/app/src/components/settings-v2/parts/row.tsx

@@ -1,20 +0,0 @@
-import type { Component, JSX } from "solid-js"
-import "../settings-v2.css"
-
-export interface SettingsRowV2Props {
-  title: string | JSX.Element
-  description: string | JSX.Element
-  children: JSX.Element
-}
-
-export const SettingsRowV2: Component<SettingsRowV2Props> = (props) => {
-  return (
-    <div data-component="settings-v2-row">
-      <div data-slot="settings-v2-row-copy">
-        <div data-slot="settings-v2-row-title">{props.title}</div>
-        <div data-slot="settings-v2-row-description">{props.description}</div>
-      </div>
-      <div data-slot="settings-v2-row-control">{props.children}</div>
-    </div>
-  )
-}

packages/app/src/components/ui/drawer.tsx

@@ -1,119 +0,0 @@
-/**
- * Taken from https://www.solid-ui.com/docs/components/drawer
- * Only used in one place hence not a v2 component yet... can be promoted to ui/v2 later
- */
-
-import type { Component, ComponentProps, JSX, ValidComponent } from "solid-js"
-import { splitProps } from "solid-js"
-import type { ContentProps, DescriptionProps, DynamicProps, LabelProps, OverlayProps } from "@corvu/drawer"
-import DrawerPrimitive from "@corvu/drawer"
-
-const Drawer = DrawerPrimitive
-
-const DrawerTrigger = DrawerPrimitive.Trigger
-
-const DrawerPortal = DrawerPrimitive.Portal
-
-const DrawerClose = DrawerPrimitive.Close
-
-type DrawerOverlayProps<T extends ValidComponent = "div"> = OverlayProps<T> & { class?: string }
-
-const DrawerOverlay = <T extends ValidComponent = "div">(props: DynamicProps<T, DrawerOverlayProps<T>>) => {
-  const [, rest] = splitProps(props as DrawerOverlayProps, ["class"])
-  const drawerContext = DrawerPrimitive.useContext()
-  const overlayStyle = () => {
-    const state = drawerContext.transitionState()
-    if (state === "opening" || state === "closing") return undefined
-    const open = drawerContext.openPercentage()
-    return {
-      opacity: open,
-      "backdrop-filter": `blur(${4 * open}px)`,
-    }
-  }
-  return (
-    <DrawerPrimitive.Overlay
-      class={props.class}
-      classList={{
-        "fixed inset-0 z-[100] bg-v2-overlay-simple-overlay-scrim opacity-0 backdrop-blur-none transition-[opacity,backdrop-filter] duration-300 data-[opening]:opacity-100 data-[opening]:backdrop-blur-[4px] data-[closing]:opacity-0 data-[closing]:backdrop-blur-none": true,
-      }}
-      style={overlayStyle()}
-      {...rest}
-    />
-  )
-}
-
-type DrawerContentProps<T extends ValidComponent = "div"> = ContentProps<T> & {
-  class?: string
-  children?: JSX.Element
-}
-
-const DrawerContent = <T extends ValidComponent = "div">(props: DynamicProps<T, DrawerContentProps<T>>) => {
-  const [, rest] = splitProps(props as DrawerContentProps, ["class", "children"])
-  return (
-    <DrawerPortal>
-      <DrawerOverlay />
-      <DrawerPrimitive.Content
-        class={props.class}
-        classList={{
-          "group/drawer-content fixed inset-y-[6px] end-[6px] start-auto z-[100] flex h-auto max-h-[calc(100vh-12px)] w-[560px] max-w-[calc(100vw-12px)] flex-col items-start rounded-[8px] bg-v2-background-bg-base p-0 shadow-[var(--v2-elevation-overlay)] data-[transitioning]:transition-transform data-[transitioning]:duration-300 md:select-none": true,
-        }}
-        {...rest}
-      >
-        {props.children}
-      </DrawerPrimitive.Content>
-    </DrawerPortal>
-  )
-}
-
-const DrawerHeader: Component<ComponentProps<"div">> = (props) => {
-  const [, rest] = splitProps(props, ["class"])
-  return <div class={props.class} classList={{ "grid gap-1.5 p-4 text-center sm:text-left": true }} {...rest} />
-}
-
-const DrawerFooter: Component<ComponentProps<"div">> = (props) => {
-  const [, rest] = splitProps(props, ["class"])
-  return <div class={props.class} classList={{ "mt-auto flex flex-col gap-2 p-4": true }} {...rest} />
-}
-
-type DrawerTitleProps<T extends ValidComponent = "div"> = LabelProps<T> & { class?: string }
-
-const DrawerTitle = <T extends ValidComponent = "div">(props: DynamicProps<T, DrawerTitleProps<T>>) => {
-  const [, rest] = splitProps(props as DrawerTitleProps, ["class"])
-  return (
-    <DrawerPrimitive.Label
-      class={props.class}
-      classList={{ "text-base font-[530] leading-none tracking-[-0.04px] text-v2-text-text-base": true }}
-      {...rest}
-    />
-  )
-}
-
-type DrawerDescriptionProps<T extends ValidComponent = "div"> = DescriptionProps<T> & {
-  class?: string
-}
-
-const DrawerDescription = <T extends ValidComponent = "div">(props: DynamicProps<T, DrawerDescriptionProps<T>>) => {
-  const [, rest] = splitProps(props as DrawerDescriptionProps, ["class"])
-  return (
-    <DrawerPrimitive.Description
-      class={props.class}
-      classList={{
-        "text-[13px] font-[440] leading-[140%] tracking-[-0.04px] text-v2-text-text-muted": true,
-      }}
-      {...rest}
-    />
-  )
-}
-
-export {
-  Drawer,
-  DrawerPortal,
-  DrawerOverlay,
-  DrawerTrigger,
-  DrawerClose,
-  DrawerContent,
-  DrawerHeader,
-  DrawerFooter,
-  DrawerTitle,
-  DrawerDescription,
-}

packages/app/src/composer/adapter.ts

@@ -1,7 +1,8 @@
 import type { Data } from "@opencode-ai/client/solid"
+import type { SessionMessageUser } from "@opencode-ai/client/promise"
 import type { Accessor } from "solid-js"
-import type { ModelSelection } from "@/context/local"
-import type { ServerSDK } from "@/context/server-sdk"
+import type { ModelSelection } from "@/providers/models/selection"
+import type { ServerSDK } from "@/runtime/server/client"
 import type { ComposerStateTarget } from "./submission-state"
 import type { createComposerSubmission } from "./submission-state"
 
@@ -41,6 +42,10 @@ export type ComposerSelection = {
 export type ComposerSession = {
   id: string
   directory: string
+  handoff?: {
+    set: (message: SessionMessageUser) => void
+    clear: (messageID: string) => void
+  }
   api: {
     command: (input: Parameters<ServerSDK["api"]["session"]["command"]>[0]) => Promise<unknown>
     shell: (input: Parameters<ServerSDK["api"]["session"]["shell"]>[0]) => Promise<unknown>
@@ -51,6 +56,7 @@ export type ComposerSession = {
     location: { command: Pick<Data["location"]["command"], "list"> }
     session: {
       prompt: (input: Parameters<Data["session"]["prompt"]>[0]) => Promise<unknown>
+      setStatus: Data["session"]["setStatus"]
     }
   }
   current: Accessor<{ agent?: string; model?: { id: string; providerID: string; variant?: string } } | undefined>
@@ -77,7 +83,7 @@ export type NewSessionComposerAdapter = ComposerAdapterBase & {
   start: (
     selection: ComposerSelection,
     submission: ReturnType<typeof createComposerSubmission>,
-  ) => Promise<ComposerSession | undefined>
+  ) => Promise<{ session: ComposerSession; cleanupReady: Promise<void> } | undefined>
 }
 
 export type ComposerAdapter = ActiveComposerAdapter | NewSessionComposerAdapter

packages/app/src/composer/commands.tsx

@@ -1,6 +1,6 @@
-import { useCommand, type CommandOption } from "@/context/command"
-import { useLanguage } from "@/context/language"
-import { useLocal, type ModelSelection } from "@/context/local"
+import { useCommand, type CommandOption } from "@/shell/commands/command"
+import { useLanguage } from "@/runtime/i18n/language"
+import { useLocal, type ModelSelection } from "@/providers/models/selection"
 import { useDialog } from "@opencode-ai/ui/context/dialog"
 import { getCursorPosition, setCursorPosition } from "./editor/dom"
 import { useSessionLayout } from "@/session/session-layout"
@@ -40,7 +40,7 @@ export const useComposerCommands = (input: { model?: ModelSelection } = {}) => {
         if (cursor !== null) setCursorPosition(editor, cursor)
       })
     }
-    const { DialogSelectModel } = await import("@/components/dialog-select-model")
+    const { DialogSelectModel } = await import("@/providers/models/select-dialog")
     owner.run(() => {
       void dialog.show(() => <DialogSelectModel model={model} />, restoreComposer)
     })

packages/app/src/composer/comment-note.ts

@@ -1,4 +1,4 @@
-import type { FileSelection } from "@/context/file"
+import type { FileSelection } from "@/workspaces/files/model"
 
 export type PromptComment = {
   path: string

packages/app/src/composer/comments.tsx

@@ -3,13 +3,13 @@ import { createStore, reconcile, type SetStoreFunction, type Store } from "solid
 import { createSimpleContext } from "@opencode-ai/ui/context"
 import { useParams } from "@solidjs/router"
 import { base64Encode } from "@opencode-ai/util/encode"
-import { Persist, persisted } from "@/utils/persist"
-import { useServerSDK } from "./server-sdk"
-import type { ServerScope } from "@/utils/server-scope"
-import { createScopedCache } from "@/utils/scoped-cache"
-import { uuid } from "@/utils/uuid"
-import type { SelectedLineRange } from "@/context/file"
-import { useWorkspaceLocation } from "./location"
+import { Persist, persisted } from "@/runtime/persistence/storage"
+import { useServerSDK } from "@/runtime/server/client"
+import type { ServerScope } from "@/runtime/server/scope"
+import { createScopedCache } from "@/runtime/server/scoped-cache"
+import { uuid } from "@/runtime/persistence/uuid"
+import type { SelectedLineRange } from "@/workspaces/files/model"
+import { useWorkspaceLocation } from "@/workspaces/location"
 
 export type LineComment = {
   id: string

packages/app/src/composer/composer.stories.tsx

@@ -1,12 +1,13 @@
 import { Show, createMemo, onMount, type JSX } from "solid-js"
 import { createStore } from "solid-js/store"
-import type { ModelSelection } from "@/context/local"
+import type { ModelSelection } from "@/providers/models/selection"
 import { STORY_MODEL, emptySessionDocument, pendingAndQueuedDocument } from "@opencode-ai/session-ui/storybook"
 import { Composer } from "./composer"
 import type { ComposerModel } from "./model"
 import { createComposerEditor } from "./editor/interaction"
 import type { ComposerPersistedState, ComposerSuggestion } from "./types"
 import { buildPromptRequest } from "./request"
+import { promptLength } from "./prompt-parts"
 import { SessionPreview } from "@/session/story-model"
 import { Skill } from "@opencode-ai/schema/skill"
 import { resolveSessionComposerSelection } from "@/session/composer/selection"
@@ -57,7 +58,7 @@ function ComposerStory(props: {
 }) {
   const [draft, setDraft] = createStore<ComposerPersistedState>({
     prompt: props.prompt ?? [{ type: "text", content: "", start: 0, end: 0 }],
-    cursor: props.prompt?.reduce((length, part) => length + ("content" in part ? part.content.length : 0), 0) ?? 0,
+    cursor: props.prompt ? promptLength(props.prompt) : 0,
     model: { providerID: STORY_MODEL.providerID, modelID: STORY_MODEL.id, variant: STORY_MODEL.variant },
     context: { items: props.comments ?? [] },
   })

packages/app/src/composer/composer.tsx

@@ -6,10 +6,10 @@ import { Keybind } from "@opencode-ai/ui/keybind"
 import { ProviderIcon } from "@opencode-ai/ui/provider-icon"
 import { Tooltip } from "@opencode-ai/ui/tooltip"
 import { ComposerEditor } from "./editor/editor"
-import { ModelSelectorPopover } from "@/components/dialog-select-model"
-import { DialogSelectModelUnpaid } from "@/components/dialog-select-model-unpaid"
-import { useCommand } from "@/context/command"
-import { useLanguage } from "@/context/language"
+import { ModelSelectorPopover } from "@/providers/models/select-dialog"
+import { DialogSelectModelUnpaid } from "@/providers/models/unpaid"
+import { useCommand } from "@/shell/commands/command"
+import { useLanguage } from "@/runtime/i18n/language"
 import type { ComposerModel } from "./model"
 
 export function Composer(props: {
@@ -29,7 +29,7 @@ export function Composer(props: {
         accentSubmit={props.accentSubmit}
         borderUnderlay={props.borderUnderlay}
         class={props.class}
-        variantControlVisible={!props.model.model.loading}
+        modelControlsVisible={!props.model.model.loading}
         attachKeybind={command.keybindParts("file.attach")}
         attachShortcut={command.keybind("file.attach")}
         modelControl={

packages/app/src/composer/editor/actions.ts

@@ -7,6 +7,7 @@ import type {
   ComposerPersistedState,
   ComposerPrompt,
 } from "../types"
+import { promptLength } from "../prompt-parts"
 
 export type ComposerStateStore = [
   Store<ComposerPersistedState> | Accessor<Store<ComposerPersistedState>>,
@@ -134,7 +135,3 @@ function withOffsets(prompt: ComposerPrompt): ComposerPrompt {
     return next
   })
 }
-
-function promptLength(prompt: ComposerPrompt) {
-  return prompt.reduce((length, part) => length + ("content" in part ? part.content.length : 0), 0)
-}

packages/app/src/composer/editor/editor.tsx

@@ -42,7 +42,7 @@ export type ComposerEditorProps = {
   borderUnderlay?: boolean
   class?: string
   modelControl?: JSX.Element
-  variantControlVisible?: boolean
+  modelControlsVisible?: boolean
   attachKeybind?: string[]
   attachShortcut?: string
 }
@@ -233,17 +233,19 @@ export function ComposerEditor(props: ComposerEditorProps) {
                 />
               )}
             </Show>
-            {props.modelControl}
-            <Show when={(props.variantControlVisible ?? true) && view.variant} keyed>
-              {(control) => (
-                <Show when={control.options().length > 1}>
-                  <ComposerEditorConfiguredSelect
-                    title={i18n.t("ui.promptInput.chooseVariant")}
-                    keybind={["Shift", "Mod", "D"]}
-                    control={control}
-                  />
-                </Show>
-              )}
+            <Show when={props.modelControlsVisible ?? true}>
+              {props.modelControl}
+              <Show when={view.variant} keyed>
+                {(control) => (
+                  <Show when={control.options().length > 1}>
+                    <ComposerEditorConfiguredSelect
+                      title={i18n.t("ui.promptInput.chooseVariant")}
+                      keybind={["Shift", "Mod", "D"]}
+                      control={control}
+                    />
+                  </Show>
+                )}
+              </Show>
             </Show>
           </div>
           <ComposerEditorSubmitButton

packages/app/src/composer/editor/interaction.ts

@@ -18,6 +18,7 @@ import {
   type ComposerInteractionCommand,
   type ComposerInteractionEvent,
 } from "../suggestions/machine"
+import { clonePrompt, promptLength } from "../prompt-parts"
 
 export type ComposerSelectControl = {
   options: Accessor<ComposerOption[]>
@@ -434,16 +435,6 @@ function canNavigateHistory(direction: "up" | "down", text: string, cursor: numb
   return position === text.length
 }
 
-function clonePrompt(prompt: ComposerPersistedState["prompt"]): ComposerPersistedState["prompt"] {
-  return prompt.map((part) =>
-    part.type === "file" ? { ...part, selection: part.selection ? { ...part.selection } : undefined } : { ...part },
-  )
-}
-
-function promptLength(prompt: ComposerPersistedState["prompt"]) {
-  return prompt.reduce((length, part) => length + ("content" in part ? part.content.length : 0), 0)
-}
-
 function editorCursor(editor: HTMLElement) {
   const selection = window.getSelection()
   if (!selection?.rangeCount || !editor.contains(selection.anchorNode)) return editor.textContent?.length ?? 0

packages/app/src/composer/history/entry.test.ts

@@ -1,6 +1,6 @@
 import { describe, expect, test } from "bun:test"
 import type { Prompt } from "@/composer/state"
-import { clonePromptParts, prependHistoryEntry, promptLength, type PromptHistoryComment } from "./entry"
+import { prependHistoryEntry, type PromptHistoryComment } from "./entry"
 import { upgradeHistoryState } from "./store"
 
 const DEFAULT_PROMPT: Prompt = [{ type: "text", content: "", start: 0, end: 0 }]
@@ -34,31 +34,32 @@ describe("Composer history", () => {
     expect(dedupedComments).toBe(commentsOnly)
   })
 
+  test("insertion isolates canonical entries from source mutations", () => {
+    const prompt: Prompt = [
+      {
+        type: "file",
+        path: "src/a.ts",
+        content: "@src/a.ts",
+        start: 0,
+        end: 9,
+        selection: { startLine: 1, startChar: 0, endLine: 2, endChar: 0 },
+      },
+    ]
+    const comments = [comment("c1")]
+    const entries = prependHistoryEntry([], prompt, comments)
+    const stored = entries[0]
+
+    if (prompt[0]?.type !== "file" || stored?.prompt[0]?.type !== "file") throw new Error("expected file")
+    prompt[0].selection!.startLine = 9
+    comments[0].selection.start = 9
+
+    expect(stored.prompt[0].selection?.startLine).toBe(1)
+    expect(stored.comments[0]?.selection.start).toBe(2)
+  })
+
   test("upgrades stored prompt arrays once at the persistence boundary", () => {
     expect(upgradeHistoryState({ entries: [text("stored")] })).toEqual({
       entries: [{ prompt: text("stored"), comments: [] }],
     })
   })
-
-  test("helpers clone prompt and count text content length", () => {
-    const original: Prompt = [
-      { type: "text", content: "one", start: 0, end: 3 },
-      {
-        type: "file",
-        path: "src/a.ts",
-        content: "@src/a.ts",
-        start: 3,
-        end: 12,
-        selection: { startLine: 1, startChar: 1, endLine: 2, endChar: 1 },
-      },
-      { type: "image", id: "1", filename: "img.png", mime: "image/png", blob: { id: "blob", url: "blob:test" } },
-    ]
-    const copy = clonePromptParts(original)
-    expect(copy).not.toBe(original)
-    expect(promptLength(copy)).toBe(12)
-    if (copy[1]?.type !== "file") throw new Error("expected file")
-    copy[1].selection!.startLine = 9
-    if (original[1]?.type !== "file") throw new Error("expected file")
-    expect(original[1].selection?.startLine).toBe(1)
-  })
 })

packages/app/src/composer/history/entry.ts

@@ -1,5 +1,6 @@
 import type { Prompt } from "@/composer/state"
-import type { SelectedLineRange } from "@/context/file"
+import type { SelectedLineRange } from "@/workspaces/files/model"
+import { clonePrompt } from "../prompt-parts"
 
 export const MAX_HISTORY = 100
 
@@ -20,19 +21,6 @@ export type PromptHistoryEntry = {
 
 export type PromptHistoryStoredEntry = PromptHistoryEntry
 
-export function clonePromptParts(prompt: Prompt): Prompt {
-  return prompt.map((part) => {
-    if (part.type === "text") return { ...part }
-    if (part.type === "image") return { ...part }
-    if (part.type === "agent") return { ...part }
-    if (part.type === "skill") return { ...part }
-    return {
-      ...part,
-      selection: part.selection ? { ...part.selection } : undefined,
-    }
-  })
-}
-
 function cloneSelection(selection: SelectedLineRange): SelectedLineRange {
   return {
     start: selection.start,
@@ -49,17 +37,6 @@ export function clonePromptHistoryComments(comments: PromptHistoryComment[]) {
   }))
 }
 
-export function normalizePromptHistoryEntry(entry: PromptHistoryStoredEntry): PromptHistoryEntry {
-  return {
-    prompt: clonePromptParts(entry.prompt),
-    comments: clonePromptHistoryComments(entry.comments),
-  }
-}
-
-export function promptLength(prompt: Prompt) {
-  return prompt.reduce((len, part) => len + ("content" in part ? part.content.length : 0), 0)
-}
-
 export function prependHistoryEntry(
   entries: PromptHistoryStoredEntry[],
   prompt: Prompt,
@@ -75,7 +52,7 @@ export function prependHistoryEntry(
   if (!text && !hasImages && !hasComments) return entries
 
   const entry = {
-    prompt: clonePromptParts(prompt),
+    prompt: clonePrompt(prompt),
     comments: clonePromptHistoryComments(comments),
   } satisfies PromptHistoryEntry
   const last = entries[0]
@@ -96,9 +73,7 @@ function isCommentEqual(commentA: PromptHistoryComment, commentB: PromptHistoryC
   )
 }
 
-function isPromptEqual(promptA: PromptHistoryStoredEntry, promptB: PromptHistoryStoredEntry) {
-  const entryA = normalizePromptHistoryEntry(promptA)
-  const entryB = normalizePromptHistoryEntry(promptB)
+function isPromptEqual(entryA: PromptHistoryStoredEntry, entryB: PromptHistoryStoredEntry) {
   if (entryA.prompt.length !== entryB.prompt.length) return false
   for (let i = 0; i < entryA.prompt.length; i++) {
     const partA = entryA.prompt[i]

packages/app/src/composer/history/store.ts

@@ -1,13 +1,13 @@
 import { createStore, type SetStoreFunction, type Store } from "solid-js/store"
 import type { Prompt } from "@/composer/state"
-import { Persist, persisted } from "@/utils/persist"
+import { Persist, persisted } from "@/runtime/persistence/storage"
 import {
   clonePromptHistoryComments,
-  clonePromptParts,
   prependHistoryEntry,
   type PromptHistoryComment,
   type PromptHistoryStoredEntry,
 } from "./entry"
+import { clonePrompt } from "../prompt-parts"
 
 export type ComposerHistoryStore = {
   entries: (mode: "normal" | "shell") => PromptHistoryStoredEntry[]
@@ -23,7 +23,7 @@ export function upgradeHistoryState(value: unknown) {
   return {
     ...value,
     entries: entries.flatMap((entry): PromptHistoryStoredEntry[] => {
-      if (Array.isArray(entry)) return [{ prompt: clonePromptParts(entry as Prompt), comments: [] }]
+      if (Array.isArray(entry)) return [{ prompt: clonePrompt(entry as Prompt), comments: [] }]
       if (!entry || typeof entry !== "object" || !("prompt" in entry) || !Array.isArray(entry.prompt)) return []
       if (!("comments" in entry) || !Array.isArray(entry.comments)) return []
       return [entry as PromptHistoryStoredEntry]
@@ -64,7 +64,7 @@ export function createComposerHistory() {
     add(prompt: Prompt, mode: "normal" | "shell", comments: PromptHistoryComment[]) {
       const ready = mode === "shell" ? shellInit : normalInit
       if (!(ready instanceof Promise)) return history.add(prompt, mode, comments)
-      const saved = clonePromptParts(prompt)
+      const saved = clonePrompt(prompt)
       const metadata = clonePromptHistoryComments(comments)
       void ready.then(() => history.add(saved, mode, metadata))
     },

packages/app/src/composer/model.ts

@@ -4,21 +4,21 @@ import type { ReferenceInfo } from "@opencode-ai/client/promise"
 import { createComponent, createEffect, createMemo, on } from "solid-js"
 import type { ComposerSuggestion } from "./types"
 import { createComposerEditor, createComposerEditorState, type ComposerEditorModel } from "./editor/interaction"
-import { selectionFromLines, type SelectedLineRange, useFile } from "@/context/file"
-import { useComments } from "@/context/comments"
-import { useCommand } from "@/context/command"
-import { useLanguage } from "@/context/language"
-import { useLayout } from "@/context/layout"
-import { usePlatform } from "@/context/platform"
-import { useWorkspaceLocation } from "@/context/location"
-import { useData } from "@/context/server"
+import { selectionFromLines, type SelectedLineRange, useFile } from "@/workspaces/files/model"
+import { useComments } from "@/composer/comments"
+import { useCommand } from "@/shell/commands/command"
+import { useLanguage } from "@/runtime/i18n/language"
+import { useLayout } from "@/shell/state/layout"
+import { usePlatform } from "@/runtime/platform/platform"
+import { useWorkspaceLocation } from "@/workspaces/location"
+import { useData } from "@/runtime/server/current"
 import { createSessionTabs } from "@/session/helpers"
-import { showToast } from "@/utils/toast"
-import { formatServerError } from "@/utils/server-errors"
+import { showToast } from "@/shell/notifications/toast"
+import { formatServerError } from "@/runtime/server/errors"
 import { Skill } from "@opencode-ai/schema/skill"
 import type { ComposerAdapter, ComposerControls } from "./adapter"
 import type { ImageAttachmentPart } from "./state"
-import { normalizePromptHistoryEntry, type PromptHistoryComment } from "./history/entry"
+import type { PromptHistoryComment } from "./history/entry"
 import { createComposerHistory } from "./history/store"
 import { composerPlaceholder } from "./placeholder"
 import { createComposerSubmit } from "./submit"
@@ -284,11 +284,7 @@ export function createComposerModel(adapter: ComposerAdapter): ComposerModel {
     store: prompt.store,
     state: interaction,
     history: {
-      entries: (mode) =>
-        history.entries(mode).map((value) => {
-          const entry = normalizePromptHistoryEntry(value)
-          return { prompt: entry.prompt, metadata: entry.comments }
-        }),
+      entries: (mode) => history.entries(mode).map((entry) => ({ prompt: entry.prompt, metadata: entry.comments })),
       add: (value, mode) => history.add(value, mode, mode === "shell" ? [] : historyComments()),
       capture: historyComments,
       restore: (metadata) => restoreHistoryComments(metadata as PromptHistoryComment[]),

packages/app/src/composer/persistence.tsx

@@ -2,12 +2,12 @@ import { base64Encode } from "@opencode-ai/util/encode"
 import { createSimpleContext } from "@opencode-ai/ui/context"
 import { useParams, useSearchParams } from "@solidjs/router"
 import { createMemo, createResource, createRoot, getOwner, onCleanup } from "solid-js"
-import { requireServerKey } from "@/utils/session-route"
-import { ServerConnection } from "@/context/servers"
-import { useServerSDK } from "@/context/server-sdk"
-import { useWorkspaceLocation } from "@/context/location"
-import { useTabs, type Tab } from "@/context/tabs"
-import type { ServerScope } from "@/utils/server-scope"
+import { requireServerKey } from "@/shell/routes/session"
+import { ServerConnection } from "@/runtime/server/registry"
+import { useServerSDK } from "@/runtime/server/client"
+import { useWorkspaceLocation } from "@/workspaces/location"
+import { useTabs, type Tab } from "@/shell/tabs/tabs"
+import type { ServerScope } from "@/runtime/server/scope"
 import {
   createComposerReady,
   createComposerState,