chore: update nix node_modules hashes

feat(core): decouple workspace identity from provisioning (#44526 )
fix(session-ui): align tool error card with figma (#44543 )
2026-08-24 02:26:24 +00:00 · 2026-08-24 00:16:26 +00:00 · 2026-08-23 23:49:51 +00:00 · 2026-08-23 23:31:45 +00:00 · 2026-08-23 17:39:55 -05:00 · 2026-08-24 08:27:04 +10:00
247 changed files with 7238 additions and 2500 deletions
@@ -0,0 +1,6 @@
+---
+"@opencode-ai/client": patch
+"@opencode-ai/plugin": patch
+---
+
+Add form reply and cancellation operations that reconcile terminal forms in the local TUI projection.
@@ -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
@@ -59,6 +59,7 @@
        "@dnd-kit/dom": "0.5.0",
        "@dnd-kit/helpers": "0.5.0",
        "@dnd-kit/solid": "0.5.0",
+        "@ibm/plex": "6.4.1",
        "@kobalte/core": "catalog:",
        "@opencode-ai/client": "workspace:*",
        "@opencode-ai/schema": "workspace:*",
@@ -190,7 +191,7 @@
        "solid-js": "catalog:",
      },
      "peerDependencies": {
-        "effect": "4.0.0-rc.110",
+        "effect": "4.0.0-rc.111",
        "solid-js": ">=1.9.0",
      },
      "optionalPeers": [
@@ -524,7 +525,7 @@
      "name": "@opencode-ai/http-recorder",
      "version": "1.18.15",
      "dependencies": {
-        "@effect/platform-node-shared": "4.0.0-rc.110",
+        "@effect/platform-node-shared": "4.0.0-rc.111",
      },
      "devDependencies": {
        "@effect/platform-node": "catalog:",
@@ -593,8 +594,8 @@
      },
      "peerDependencies": {
        "@opencode-ai/theme": "workspace:*",
-        "@opentui/core": ">=0.5.6",
-        "@opentui/solid": ">=0.5.6",
+        "@opentui/core": ">=0.5.7",
+        "@opentui/solid": ">=0.5.7",
        "solid-js": ">=1.9.0",
      },
      "optionalPeers": [
@@ -670,6 +671,7 @@
        "effect": "catalog:",
      },
      "devDependencies": {
+        "@opencode-ai/ai": "workspace:*",
        "@opencode-ai/httpapi-codegen": "workspace:*",
        "@opencode-ai/protocol": "workspace:*",
        "@tsconfig/bun": "catalog:",
@@ -717,7 +719,6 @@
        "luxon": "catalog:",
        "marked": "catalog:",
        "mermaid": "11.16.1",
-        "morphdom": "2.7.8",
        "motion": "12.34.5",
        "remeda": "catalog:",
        "remend": "catalog:",
@@ -727,6 +728,7 @@
        "strip-ansi": "7.1.2",
      },
      "devDependencies": {
+        "@happy-dom/global-registrator": "20.0.11",
        "@tsconfig/node22": "catalog:",
        "@types/bun": "catalog:",
        "@types/luxon": "catalog:",
@@ -1077,10 +1079,10 @@
  "catalog": {
    "@cloudflare/workers-types": "4.20251008.0",
    "@corvu/drawer": "0.2.4",
-    "@effect/opentelemetry": "4.0.0-rc.110",
-    "@effect/platform-node": "4.0.0-rc.110",
-    "@effect/platform-node-shared": "4.0.0-rc.110",
-    "@effect/sql-sqlite-bun": "4.0.0-rc.110",
+    "@effect/opentelemetry": "4.0.0-rc.111",
+    "@effect/platform-node": "4.0.0-rc.111",
+    "@effect/platform-node-shared": "4.0.0-rc.111",
+    "@effect/sql-sqlite-bun": "4.0.0-rc.111",
    "@hono/standard-validator": "0.2.0",
    "@hono/zod-validator": "0.4.2",
    "@kobalte/core": "0.13.11",
@@ -1088,9 +1090,9 @@
    "@npmcli/arborist": "9.4.0",
    "@octokit/rest": "22.0.0",
    "@openauthjs/openauth": "0.0.0-20250322224806",
-    "@opentui/core": "0.5.6",
-    "@opentui/keymap": "0.5.6",
-    "@opentui/solid": "0.5.6",
+    "@opentui/core": "0.5.7",
+    "@opentui/keymap": "0.5.7",
+    "@opentui/solid": "0.5.7",
    "@pierre/diffs": "1.2.10",
    "@playwright/test": "1.59.1",
    "@sentry/solid": "10.36.0",
@@ -1117,7 +1119,7 @@
    "dompurify": "3.3.1",
    "drizzle-kit": "1.0.0-rc.2",
    "drizzle-orm": "1.0.0-rc.2",
-    "effect": "4.0.0-rc.110",
+    "effect": "4.0.0-rc.111",
    "fuzzysort": "3.1.0",
    "get-east-asian-width": "1.6.0",
    "hono": "4.10.7",
@@ -1684,13 +1686,13 @@

    "@drizzle-team/brocli": ["@drizzle-team/brocli@0.11.0", "", {}, "sha512-hD3pekGiPg0WPCCGAZmusBBJsDqGUR66Y452YgQsZOnkdQ7ViEPKuyP4huUGEZQefp8g34RRodXYmJ2TbCH+tg=="],

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-    "@opentui/solid": ["@opentui/solid@0.5.6", "", { "dependencies": { "@babel/core": "7.28.0", "@babel/preset-typescript": "7.27.1", "@opentui/core": "0.5.6", "babel-plugin-module-resolver": "5.0.2", "babel-preset-solid": "1.9.12", "entities": "7.0.1", "s-js": "^0.4.9" }, "peerDependencies": { "solid-js": "1.9.12" } }, "sha512-kxmrQS31sgziW/qZDuFYuiT3CvcUQg9ZQA1qKCEb5mBoInur4fnECOdTaM2S8c3cidcV0z2yu41NP1Dypkl+BQ=="],
+    "@opentui/solid": ["@opentui/solid@0.5.7", "", { "dependencies": { "@babel/core": "7.28.0", "@babel/preset-typescript": "7.27.1", "@opentui/core": "0.5.7", "babel-plugin-module-resolver": "5.0.2", "babel-preset-solid": "1.9.12", "entities": "7.0.1", "s-js": "^0.4.9" }, "peerDependencies": { "solid-js": "1.9.12" } }, "sha512-qrKAZd9xt4D67LXZUARg1Aw0dwEWi29GyOxpM6abqmyExGPMS7jih5Z9oMQJ9EXsouDKpW7Mejjq7WbX2AaecQ=="],

    "@oslojs/asn1": ["@oslojs/asn1@1.0.0", "", { "dependencies": { "@oslojs/binary": "1.0.0" } }, "sha512-zw/wn0sj0j0QKbIXfIlnEcTviaCzYOY3V5rAyjR6YtOByFtJiT574+8p9Wlach0lZH9fddD4yb9laEAIl4vXQA=="],

@@ -3852,7 +3854,7 @@

    "ee-first": ["ee-first@1.1.1", "", {}, "sha512-WMwm9LhRUo+WUaRN+vRuETqG89IgZphVSNkdFgeb6sS/E4OrDIN7t48CAewSHXc6C8lefD8KKfr5vY61brQlow=="],

-    "effect": ["effect@4.0.0-rc.110", "", { "dependencies": { "@standard-schema/spec": "^1.1.0", "fast-check": "^4.9.0", "msgpackr": "^2.0.4" } }, "sha512-ega6FTJ8CS2of7tHZiADvgyJyV999Q6tZ9juE56V81O0jw6flRwydaPNtyfvP2a5LL9PZrse8A1jnNUD5sWVHg=="],
+    "effect": ["effect@4.0.0-rc.111", "", { "dependencies": { "@standard-schema/spec": "^1.1.0", "fast-check": "^4.9.0", "msgpackr": "^2.0.5" } }, "sha512-ASd5L58EIR0CUNueZNKKjSsyOCd+2alxOAIaTcHaqkJkPsaYSsw5Cg/cfANk5K4Jr2YsX756xvX11shzqsreWA=="],

    "ejs": ["ejs@3.1.10", "", { "dependencies": { "jake": "^10.8.5" }, "bin": { "ejs": "bin/cli.js" } }, "sha512-UeJmFfOrAQS8OJWPZ4qtgHyWExa088/MtK5UEyoJGFH67cDEXkZSviOiKRCZ4Xij0zxI3JECgYs3oKx+AizQBA=="],

@@ -6172,6 +6174,8 @@

    "@dot/log/chalk": ["chalk@4.1.2", "", { "dependencies": { "ansi-styles": "^4.1.0", "supports-color": "^7.1.0" } }, "sha512-oKnbhFyRIXpUuez8iBMmyEa4nbj4IOQyuhc/wy9kY7/WVPcwIO9VA668Pu8RkO7+0G76SLROeyw9CpQ061i4mA=="],

+    "@effect/platform-node-shared/ws": ["ws@8.21.3", "", { "peerDependencies": { "bufferutil": "^4.0.1", "utf-8-validate": ">=5.0.2" }, "optionalPeers": ["bufferutil", "utf-8-validate"] }, "sha512-201TZ/kPWxoPr/OKWjquZR1SWKXcvxdH+e1xrx89b3YbmzLMFCLfnaG1HFIgWzJOEWZ7MvpK++odZufgYR50Rw=="],
+
    "@electron/asar/commander": ["commander@5.1.0", "", {}, "sha512-P0CysNDQ7rtVw4QIQtm+MRxV66vKFSvlsQvGYXZWR3qFU0jlMKHZZZgw8e+8DSah4UDKMqnknRDQz+xuQXQ/Zg=="],

    "@electron/asar/glob": ["glob@7.2.3", "", { "dependencies": { "fs.realpath": "^1.0.0", "inflight": "^1.0.4", "inherits": "2", "minimatch": "^3.1.1", "once": "^1.3.0", "path-is-absolute": "^1.0.0" } }, "sha512-nFR0zLpU2YCaRxwoCJvL6UvCH2JFyFVIvwTLsIf21AuHlMskA1hhTdk+LlYJtOlYt9v6dvszD2BGRqBL+iQK9Q=="],
@@ -1,8 +1,8 @@
 {
  "nodeModules": {
-    "x86_64-linux": "sha256-tvhHO7NdDnBWtyaOj+kVX0Tzcv3O0uISbHC4V71kA0M=",
-    "aarch64-linux": "sha256-x3F43TL7BisEuXlJw7QS/DJoSzZWuNxbgn7hFCsTdXU=",
-    "aarch64-darwin": "sha256-y2r5Qy/XNgnvuzpnGMtwV5ZmhksUN2AUPLjbb40HYIE=",
-    "x86_64-darwin": "sha256-TS68JE40IaEa7ny0ATPUnEj8EV1CKtnGTPpyvZFwO7A="
+    "x86_64-linux": "sha256-mMg7Y8ZTL+SEcX6ciNBDL+H9UT9c85EM/pZmIcsoFtA=",
+    "aarch64-linux": "sha256-9JtD/rwpmF9hD9MPNLu/fMx8mQu1vpOMLYRN+nHq/eI=",
+    "aarch64-darwin": "sha256-wLtkY3d5o88bfPriChTCSmUtEnYR6PKj86qQxNqDVOE=",
+    "x86_64-darwin": "sha256-9bqDFh7YGNK94oRDo9xp0l5r0H17g1aUtnaVPTfFEOE="
  }
 }
@@ -39,19 +39,19 @@
      "packages/stats/*"
    ],
    "catalog": {
-      "@effect/opentelemetry": "4.0.0-rc.110",
-      "@effect/platform-node": "4.0.0-rc.110",
-      "@effect/platform-node-shared": "4.0.0-rc.110",
-      "@effect/sql-sqlite-bun": "4.0.0-rc.110",
+      "@effect/opentelemetry": "4.0.0-rc.111",
+      "@effect/platform-node": "4.0.0-rc.111",
+      "@effect/platform-node-shared": "4.0.0-rc.111",
+      "@effect/sql-sqlite-bun": "4.0.0-rc.111",
      "@npmcli/arborist": "9.4.0",
      "@types/bun": "1.3.13",
      "@types/cross-spawn": "6.0.6",
      "@octokit/rest": "22.0.0",
      "@hono/standard-validator": "0.2.0",
      "@hono/zod-validator": "0.4.2",
-      "@opentui/core": "0.5.6",
-      "@opentui/keymap": "0.5.6",
-      "@opentui/solid": "0.5.6",
+      "@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",
@@ -73,7 +73,7 @@
      "dompurify": "3.3.1",
      "drizzle-kit": "1.0.0-rc.2",
      "drizzle-orm": "1.0.0-rc.2",
-      "effect": "4.0.0-rc.110",
+      "effect": "4.0.0-rc.111",
      "ai": "6.0.168",
      "cross-spawn": "7.0.6",
      "hono": "4.10.7",
@@ -213,7 +213,7 @@ Errors must be expressed as `ToolFailure`. The runtime catches it and emits a `t
 - Input failed the `parameters` Schema.
 - The handler returned a `ToolFailure`.

-Provider-defined / hosted tools (Anthropic `web_search` / `code_execution` / `web_fetch`, OpenAI Responses `web_search_call` / `file_search_call` / `code_interpreter_call` / `mcp_call` / `local_shell_call` / `image_generation_call` / `computer_use_call`) pass through the runtime untouched:
+Provider-defined / hosted tools (Anthropic `web_search` / `code_execution` / `web_fetch`, OpenAI Responses `web_search_call` / `file_search_call` / `code_interpreter_call` / `mcp_call` / `image_generation_call` / `computer_use_call`) pass through the runtime untouched:

 - Routes surface the model's call as a `tool-call` event with `providerExecuted: true`, and the provider's result as a matching `tool-result` event with `providerExecuted: true`.
 - Callers detect `providerExecuted` on `tool-call` and **skip local dispatch** — no handler is invoked and no `tool-error` is raised for "unknown tool". The provider already executed it.
@@ -41,6 +41,7 @@ const SSE_EVENTS = new Set([
  "content_block_start",
  "content_block_delta",
  "content_block_stop",
+  "ping",
  "error",
 ])
 export const framing = Framing.sseEvents(SSE_EVENTS)
@@ -1004,11 +1005,13 @@ const providerErrorMessage = (event: AnthropicEvent): string => {
 }

 const onError = (event: AnthropicEvent) =>
-  new AIError({
-    module: ADAPTER,
-    method: "stream",
-    reason: classifyProviderFailure({ message: providerErrorMessage(event), code: event.error?.type }),
-  })
+  Effect.fail(
+    new AIError({
+      module: ADAPTER,
+      method: "stream",
+      reason: classifyProviderFailure({ message: providerErrorMessage(event), code: event.error?.type }),
+    }),
+  )

 const step = (state: ParserState, event: AnthropicEvent) => {
  if (event.type === "message_start") return Effect.succeed(onMessageStart(state, event))
@@ -17,7 +17,7 @@ import {
  type ToolCallPart,
  type ToolDefinition,
 } from "../schema/index.js"
-import { JsonObject, optionalArray, ProviderShared } from "./shared.js"
+import { JsonObject, optionalArray, optionalNull, ProviderShared } from "./shared.js"
 import { GeminiToolSchema } from "./utils/gemini-tool-schema.js"
 import { Lifecycle } from "./utils/lifecycle.js"
 import { ToolSchemaProjection } from "./utils/tool-schema.js"
@@ -41,6 +41,13 @@ const requiresThoughtSignatureFallback = (modelID: string) => {
 // 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
@@ -75,10 +82,15 @@ export type ProviderOptionsInput = OptionsInput
 // =============================================================================
 // Request Body Schema
 // =============================================================================
+// Gemini is known to send explicit `null` for optional streaming fields
+// (usage counts, flags, whole subtrees), so every response-side optional uses
+// `optionalNull` instead of bare `Schema.optional`. The same part/content
+// schemas lower the outbound request body; encoding drops `undefined` keys,
+// so the shared schemas stay safe there.
 const GeminiTextPart = Schema.Struct({
  text: Schema.String,
-  thought: Schema.optional(Schema.Boolean),
-  thoughtSignature: Schema.optional(Schema.String),
+  thought: optionalNull(Schema.Boolean),
+  thoughtSignature: optionalNull(Schema.String),
 })

 const GeminiInlineDataPart = Schema.Struct({
@@ -91,11 +103,11 @@ type GeminiInlineDataPart = Schema.Schema.Type<typeof GeminiInlineDataPart>

 const GeminiFunctionCallPart = Schema.Struct({
  functionCall: Schema.Struct({
-    id: Schema.optional(Schema.String),
+    id: optionalNull(Schema.String),
    name: Schema.String,
    args: Schema.optional(Schema.Unknown),
  }),
-  thoughtSignature: Schema.optional(Schema.String),
+  thoughtSignature: optionalNull(Schema.String),
 })

 const GeminiFunctionResponsePart = Schema.Struct({
@@ -115,8 +127,8 @@ const GeminiContentPart = Schema.Union([
 ])

 const GeminiContent = Schema.Struct({
-  role: Schema.Literals(["user", "model"]),
-  parts: Schema.Array(GeminiContentPart),
+  role: optionalNull(Schema.Literals(["user", "model"])),
+  parts: optionalNull(Schema.Array(GeminiContentPart)),
 })
 type GeminiContent = Schema.Schema.Type<typeof GeminiContent>

@@ -179,33 +191,33 @@ const GeminiBody = Schema.Struct(GeminiBodyFields)
 export type GeminiBody = Schema.Schema.Type<typeof GeminiBody>

 const GeminiUsage = Schema.Struct({
-  cachedContentTokenCount: Schema.optional(Schema.Number),
-  thoughtsTokenCount: Schema.optional(Schema.Number),
-  promptTokenCount: Schema.optional(Schema.Number),
-  candidatesTokenCount: Schema.optional(Schema.Number),
-  totalTokenCount: Schema.optional(Schema.Number),
+  cachedContentTokenCount: optionalNull(Schema.Number),
+  thoughtsTokenCount: optionalNull(Schema.Number),
+  promptTokenCount: optionalNull(Schema.Number),
+  candidatesTokenCount: optionalNull(Schema.Number),
+  totalTokenCount: optionalNull(Schema.Number),
 })
 type GeminiUsage = Schema.Schema.Type<typeof GeminiUsage>

 const GeminiCandidate = Schema.Struct({
-  content: Schema.optional(GeminiContent),
-  finishReason: Schema.optional(Schema.String),
+  content: optionalNull(GeminiContent),
+  finishReason: optionalNull(Schema.String),
 })

 const GeminiPromptFeedback = Schema.StructWithRest(
  Schema.Struct({
-    blockReason: Schema.optional(Schema.String),
-    blockReasonMessage: Schema.optional(Schema.String),
-    safetyRatings: Schema.optional(Schema.Unknown),
+    blockReason: optionalNull(Schema.String),
+    blockReasonMessage: optionalNull(Schema.String),
+    safetyRatings: optionalNull(Schema.Unknown),
  }),
  [Schema.Record(Schema.String, Schema.Unknown)],
 )
 type GeminiPromptFeedback = Schema.Schema.Type<typeof GeminiPromptFeedback>

 const GeminiEvent = Schema.Struct({
-  candidates: optionalArray(GeminiCandidate),
-  promptFeedback: Schema.optional(GeminiPromptFeedback),
-  usageMetadata: Schema.optional(GeminiUsage),
+  candidates: optionalNull(Schema.Array(GeminiCandidate)),
+  promptFeedback: optionalNull(GeminiPromptFeedback),
+  usageMetadata: optionalNull(GeminiUsage),
 })
 type GeminiEvent = Schema.Schema.Type<typeof GeminiEvent>

@@ -217,6 +229,7 @@ interface ParserState {
  readonly lifecycle: Lifecycle.State
  readonly reasoningSignature?: string
  readonly textSignature?: string
+  readonly seenCallIds?: ReadonlySet<string>
 }

 // =============================================================================
@@ -274,20 +287,14 @@ 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 = () => {
@@ -303,8 +310,8 @@ const lowerMessages = Effect.fn("Gemini.lowerMessages")(function* (request: LLMR
      const previous = contents.at(-1)
      // Gemini rejects a continuation whose function-response turn carries extra
      // parts, so an update after a tool result starts its own user turn.
-      if (previous?.role === "user" && !previous.parts.some((item) => "functionResponse" in item))
-        contents[contents.length - 1] = { role: "user", parts: [...previous.parts, { text: part.text }] }
+      if (previous?.role === "user" && !(previous.parts ?? []).some((item) => "functionResponse" in item))
+        contents[contents.length - 1] = { role: "user", parts: [...(previous.parts ?? []), { text: part.text }] }
      else contents.push({ role: "user", parts: [{ text: part.text }] })
      continue
    }
@@ -336,7 +343,7 @@ 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,
@@ -361,7 +368,7 @@ 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,
@@ -382,7 +389,7 @@ const lowerMessages = Effect.fn("Gemini.lowerMessages")(function* (request: LLMR
      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,
@@ -395,8 +402,8 @@ const lowerMessages = Effect.fn("Gemini.lowerMessages")(function* (request: LLMR
    // 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] }
+    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 })
  }

@@ -486,21 +493,25 @@ const fromRequest = Effect.fn("Gemini.fromRequest")(function* (request: LLMReque
 // to produce the inclusive `outputTokens` the rest of the contract expects.
 const mapUsage = (usage: GeminiUsage | undefined) => {
  if (!usage) return undefined
-  const cached = usage.cachedContentTokenCount
-  const nonCached = ProviderShared.subtractTokens(usage.promptTokenCount, cached)
+  // Explicit provider nulls decode as `null`; normalize to `undefined` so the
+  // token arithmetic below treats them like absent counts.
+  const promptTokens = usage.promptTokenCount ?? undefined
+  const cached = usage.cachedContentTokenCount ?? undefined
+  const thoughts = usage.thoughtsTokenCount ?? undefined
+  const visible = usage.candidatesTokenCount ?? undefined
+  const nonCached = ProviderShared.subtractTokens(promptTokens, cached)
  // `candidatesTokenCount` is visible-only; sum with thoughts to produce the
  // inclusive `outputTokens` the contract expects. Only compute the total
  // when the visible component is reported — otherwise we'd fabricate an
  // inclusive number from a partial breakdown.
-  const outputTokens =
-    usage.candidatesTokenCount !== undefined ? usage.candidatesTokenCount + (usage.thoughtsTokenCount ?? 0) : undefined
+  const outputTokens = visible !== undefined ? visible + (thoughts ?? 0) : undefined
  return new Usage({
-    inputTokens: usage.promptTokenCount,
+    inputTokens: promptTokens,
    outputTokens,
    nonCachedInputTokens: nonCached,
    cacheReadInputTokens: cached,
-    reasoningTokens: usage.thoughtsTokenCount,
-    totalTokens: ProviderShared.totalTokens(usage.promptTokenCount, outputTokens, usage.totalTokenCount),
+    reasoningTokens: thoughts,
+    totalTokens: ProviderShared.totalTokens(promptTokens, outputTokens, usage.totalTokenCount ?? undefined),
    providerMetadata: { google: usage },
  })
 }
@@ -535,7 +546,10 @@ const mapFinishReason = (finishReason: string | undefined, hasToolCalls: boolean
 }

 const finish = (state: ParserState): ReadonlyArray<LLMEvent> => {
-  const promptBlockReason = state.finishReason === undefined ? state.promptFeedback?.blockReason : undefined
+  // `?? undefined` normalizes an explicit `null` blockReason back to absent so
+  // the "nothing to finish" check below keeps its meaning.
+  const promptBlockReason =
+    state.finishReason === undefined ? (state.promptFeedback?.blockReason ?? undefined) : undefined
  const finishReason = state.finishReason ?? promptBlockReason
  if (finishReason === undefined && state.usage === undefined) return []

@@ -581,8 +595,10 @@ const step = (state: ParserState, event: GeminiEvent) => {
  let lifecycle = nextState.lifecycle
  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) {
+  for (const part of candidate.content.parts ?? []) {
    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.
@@ -618,13 +634,14 @@ const step = (state: ParserState, event: GeminiEvent) => {

    if ("functionCall" in part) {
      const input = part.functionCall.args === undefined ? {} : part.functionCall.args
-      // Gemini 2.0+ and Vertex supply a unique function call ID on the part; when omitted (e.g. Gemini 1.5),
+      // 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.
-      const id = part.functionCall.id ?? `tool_${crypto.randomUUID().replaceAll("-", "")}`
-      const metadata = {
-        ...(part.functionCall.id === undefined ? {} : { functionCallId: part.functionCall.id }),
-        ...(part.thoughtSignature === undefined ? {} : { thoughtSignature: part.thoughtSignature }),
-      }
+      // A repeated supplier id would replay as two identical calls, so only the first occurrence keeps it.
+      // A `null` supplier id normalizes to absent so the generated-id fallback applies.
+      const supplied = part.functionCall.id ?? undefined
+      const duplicate = supplied !== undefined && seenCallIds.has(supplied)
+      if (supplied !== undefined) seenCallIds.add(supplied)
+      const id = supplied !== undefined && !duplicate ? supplied : `tool_${crypto.randomUUID().replaceAll("-", "")}`
      lifecycle = Lifecycle.reasoningEnd(
        lifecycle,
        events,
@@ -637,7 +654,8 @@ const step = (state: ParserState, event: GeminiEvent) => {
          id,
          name: part.functionCall.name,
          input,
-          providerMetadata: Object.keys(metadata).length > 0 ? googleMetadata(metadata) : undefined,
+          providerMetadata:
+            part.thoughtSignature ? googleMetadata({ thoughtSignature: part.thoughtSignature }) : undefined,
        }),
      )
      hasToolCalls = true
@@ -651,6 +669,7 @@ const step = (state: ParserState, event: GeminiEvent) => {
      lifecycle,
      reasoningSignature,
      textSignature,
+      seenCallIds,
      finishReason: candidate.finishReason ?? nextState.finishReason,
    },
    events,
@@ -5,6 +5,7 @@ import { Protocol } from "../route/protocol.js"
 import {
  AIError,
  LLMEvent,
+  ProviderInternalReason,
  Usage,
  type FinishReason,
  type JsonSchema,
@@ -61,6 +62,11 @@ const OpenResponsesOutputText = Schema.Struct({
 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,
@@ -242,6 +248,7 @@ 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(
@@ -306,20 +313,6 @@ 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
@@ -340,7 +333,6 @@ 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
@@ -418,10 +410,6 @@ 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,
@@ -441,7 +429,7 @@ const lowerMedia = Effect.fn("OpenResponses.lowerMedia")(function* (
    return {
      type: "input_file" as const,
      filename: part.filename ?? (media.mime === "application/pdf" ? "document.pdf" : "file"),
-      ...(url ? { file_url: url } : { file_data: media.base64 }),
+      ...(url ? { file_url: url } : { file_data: media.dataUrl }),
    }
  }
  return { type: "input_image" as const, image_url: url ?? media.dataUrl }
@@ -592,9 +580,8 @@ 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({
@@ -604,7 +591,7 @@ const lowerMessages = Effect.fn("OpenResponses.lowerMessages")(function* (reques
              ),
            })
          }
-          if (itemID) hostedToolReferences.add(itemID)
+          if (id) hostedToolReferences.add(id)
          continue
        }
        return yield* ProviderShared.unsupportedContent(extension.name, "assistant", [
@@ -816,18 +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 [
@@ -985,7 +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)
@@ -1093,32 +1079,45 @@ 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
      : typeof event.status_code === "number"
        ? event.status_code
        : undefined
+  const reason =
+    event.type === "error" &&
+    event.error === undefined &&
+    event.response === undefined &&
+    summary === undefined &&
+    status === undefined
+      ? new ProviderInternalReason({ message })
+      : classifyProviderFailure({ message, code, status, rawBody: body })
  return new AIError({
    module: id,
    method: "stream",
-    reason: classifyProviderFailure({ message, code, status }),
+    body,
+    reason,
  })
 }

@@ -1134,21 +1133,19 @@ 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))
@@ -1193,17 +1190,11 @@ export const initial = (request: LLMRequest, extension: Extension = BASE): Parse
  tools: ToolStream.empty<string>(),
  lifecycle: Lifecycle.initial(),
  messageItems: new Set<string>(),
-  messagePhase,
  messagePhases: {},
  reasoningItems: {},
  store: OpenResponsesOptions.resolve(request).store,
 })

-const messagePhase = (value: unknown): MessagePhase | undefined => {
-  if (value === null || value === "commentary" || value === "final_answer") return value
-  return undefined
-}
-
 export const protocol = Protocol.make({
  id: ADAPTER,
  body: {
@@ -156,6 +156,9 @@ const OpenAIChatUsage = Schema.StructWithRest(
    prompt_tokens: optionalNull(Schema.Number),
    completion_tokens: optionalNull(Schema.Number),
    total_tokens: optionalNull(Schema.Number),
+    // Zai reports cache hits as top-level `cached_tokens`; DeepSeek uses `prompt_cache_hit_tokens`.
+    cached_tokens: optionalNull(Schema.Number),
+    prompt_cache_hit_tokens: optionalNull(Schema.Number),
    prompt_tokens_details: optionalNull(
      Schema.StructWithRest(
        Schema.Struct({
@@ -204,11 +207,16 @@ const OpenAIChatDelta = Schema.StructWithRest(
  [Schema.Record(Schema.String, Schema.Unknown)],
 )

-const OpenAIChatChoice = Schema.Struct({
-  delta: optionalNull(OpenAIChatDelta),
-  finish_reason: optionalNull(Schema.String),
-  native_finish_reason: optionalNull(Schema.String),
-})
+const OpenAIChatChoice = Schema.StructWithRest(
+  Schema.Struct({
+    delta: optionalNull(OpenAIChatDelta),
+    finish_reason: optionalNull(Schema.String),
+    native_finish_reason: optionalNull(Schema.String),
+    // Moonshot streams usage on `choice.usage` instead of top-level `usage`.
+    usage: optionalNull(OpenAIChatUsage),
+  }),
+  [Schema.Record(Schema.String, Schema.Unknown)],
+)

 const OpenAIChatError = Schema.Struct({
  code: optionalNull(Schema.Union([Schema.String, Schema.Number])),
@@ -509,6 +517,17 @@ const lowerMessages = Effect.fn("OpenAIChat.lowerMessages")(function* (request:
  return messages
 })

+// Anthropic via LiteLLM and Amazon Bedrock require `tools` to be present
+// whenever the conversation history contains tool calls/results. Send an
+// explicit empty array when we have history but no active tools.
+const hasToolHistory = (messages: ReadonlyArray<LLMRequest["messages"][number]>) => {
+  for (const message of messages) {
+    if (message.role === "tool") return true
+    if (message.role === "assistant" && message.content.some((part) => part.type === "tool-call")) return true
+  }
+  return false
+}
+
 const lowerOptions = (request: LLMRequest) => {
  const options = OpenAIOptions.resolve(request)
  return {
@@ -532,12 +551,15 @@ export const fromRequest = Effect.fn("OpenAIChat.fromRequest")(function* (
  const generation = request.generation
  const toolSchemaCompatibility = request.model.compatibility?.toolSchema
  const maxTokensField = request.model.compatibility?.maxTokensField ?? "max_tokens"
+  const hasHistory = hasToolHistory(request.messages)
  return {
    model: request.model.id,
    messages: yield* lowerMessages(request, options),
    tools:
      request.tools.length === 0
-        ? undefined
+        ? hasHistory
+          ? []
+          : undefined
        : request.tools.map((tool) =>
            lowerTool(
              tool,
@@ -581,11 +603,18 @@ const mapFinishReason = (reason: string | null | undefined): FinishReason => {
 // total) with a `reasoning_tokens` subset. We pass the inclusive totals
 // through and derive the non-cached breakdown so the `AI.Usage` contract is
 // satisfied on both sides.
+// Providers differ on cache-hit location: OpenAI uses
+// `prompt_tokens_details.cached_tokens`, DeepSeek uses
+// `prompt_cache_hit_tokens`, and Zai uses top-level `cached_tokens`.
 const mapUsage = (usage: OpenAIChatEvent["usage"]): Usage | undefined => {
  if (!usage) return undefined
  const input = usage.prompt_tokens ?? undefined
  const output = usage.completion_tokens ?? undefined
-  const cached = usage.prompt_tokens_details?.cached_tokens ?? undefined
+  const cached =
+    (usage.prompt_tokens_details?.cached_tokens ??
+      (usage as { prompt_cache_hit_tokens?: number | null }).prompt_cache_hit_tokens ??
+      (usage as { cached_tokens?: number | null }).cached_tokens ??
+      undefined) as number | undefined
  const cacheWrite = usage.prompt_tokens_details?.cache_write_tokens ?? undefined
  const reasoning = usage.completion_tokens_details?.reasoning_tokens ?? undefined
  const nonCached = ProviderShared.subtractTokens(input, ProviderShared.sumTokens(cached, cacheWrite))
@@ -691,8 +720,11 @@ const step = (state: ParserState, event: OpenAIChatEvent) =>
        }),
      })
    const events: LLMEvent[] = []
-    const usage = mapUsage(event.usage) ?? state.usage
    const choice = event.choices?.[0]
+    // Moonshot (and a few other OpenAI-compatible providers) attach usage to
+    // `choice.usage` instead of the top-level `usage` field.
+    const choiceUsage = (choice as unknown as { usage?: OpenAIChatEvent["usage"] })?.usage
+    const usage = mapUsage(event.usage) ?? (choiceUsage ? mapUsage(choiceUsage) : undefined) ?? state.usage
    const rawFinishReason = choice?.finish_reason
    const finishReason =
      rawFinishReason !== undefined && rawFinishReason !== null
@@ -134,13 +134,12 @@ const HOSTED_TOOLS = {
    name: "code_interpreter",
    input: (item) => ({ code: item.code, container_id: item.container_id }),
  },
-  computer_use_call: { name: "computer_use", input: (item) => item.action ?? {} },
+  computer_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) => {
@@ -28,7 +28,11 @@ export const ResponseIncludables = [
 export type ResponseIncludable = (typeof ResponseIncludables)[number] | (string & {})

 export const ServiceTiers = ["auto", "default", "flex", "priority"] as const
-export type ServiceTier = (typeof ServiceTiers)[number]
+export type ServiceTier = (typeof ServiceTiers)[number] | (string & {})
+export const ServiceTier = Schema.declare<ServiceTier>(
+  (value): value is ServiceTier => typeof value === "string",
+  { title: "ServiceTier" },
+)

 export const Truncations = ["auto", "disabled"] as const
 export type Truncation = (typeof Truncations)[number]
@@ -38,7 +42,7 @@ export const ResponseIncludableSchema = Schema.declare<ResponseIncludable>(
  (value): value is ResponseIncludable => typeof value === "string",
  { title: "ResponseIncludable" },
 )
-export const ServiceTierSchema = Schema.Literals(ServiceTiers)
+export const ServiceTierSchema = ServiceTier
 export const TruncationSchema = Schema.Literals(Truncations)

 export const AllowedTools = Schema.Struct({
@@ -9,8 +9,8 @@ export type OpenAITextVerbosity = OpenResponsesOptions.TextVerbosity
 // in lockstep with `openai-node/src/resources/responses/responses.ts`.
 export const OpenAIResponseIncludables = OpenResponsesOptions.ResponseIncludables
 export type OpenAIResponseIncludable = OpenResponsesOptions.ResponseIncludable
-export const OpenAIServiceTiers = OpenResponsesOptions.ServiceTiers
-export type OpenAIServiceTier = OpenResponsesOptions.ServiceTier
+export const OpenAIServiceTiers = [...OpenResponsesOptions.ServiceTiers, "scale"] as const
+export type OpenAIServiceTier = (typeof OpenAIServiceTiers)[number] | (string & {})

 export const OpenAIReasoningEffort = OpenResponsesOptions.ReasoningEffort
 export const OpenAITextVerbosity = OpenResponsesOptions.TextVerbosity
@@ -80,6 +80,9 @@ 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
@@ -89,11 +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)

@@ -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 = {
@@ -1,9 +1,13 @@
 import { mergeProviderOptions, type ProviderOptions } from "../schema/index.js"
-import type { OpenResponsesOptionsInput } from "./open-responses-options.js"
+import type { OpenAIServiceTier } from "../protocols/utils/openai-options.js"
+import type { Options } from "../protocols/utils/open-responses-options.js"

 export type { OpenAIResponseIncludable, OpenAIServiceTier } from "../protocols/utils/openai-options.js"

-export type OpenAIOptionsInput = OpenResponsesOptionsInput
+export type OpenAIOptionsInput = Omit<Options, "serviceTier"> & {
+  readonly serviceTier?: OpenAIServiceTier
+  readonly [key: string]: unknown
+}

 export type OpenAIProviderOptionsInput = OpenAIOptionsInput

@@ -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

@@ -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"
+      }
+    }
+  ]
+}
@@ -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"
+      }
+    }
+  ]
+}
@@ -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"
+      }
+    }
+  ]
+}
@@ -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"
+      }
+    }
+  ]
+}
@@ -106,3 +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")
+  })
+})
@@ -4,10 +4,4 @@ import { GoogleVertexChat } from "../../src/providers.js"
 const model = GoogleVertexChat.configure({ accessToken: "test", project: "project" }).model("gemini")

 LLM.request({ model, prompt: "Hello", providerOptions: { serviceTier: "priority" } })
-
-LLM.request({
-  model,
-  prompt: "Hello",
-  // @ts-expect-error Vertex OpenAI-compatible service tiers use the OpenAI union.
-  providerOptions: { serviceTier: "premium" },
-})
+LLM.request({ model, prompt: "Hello", providerOptions: { serviceTier: "future-tier" } })
@@ -8,6 +8,8 @@ LLM.request({ model: selected, prompt: "Hello", providerOptions: { reasoningEffo
 LLM.request({ model: selected, prompt: "Hello", providerOptions: { reasoningEffort: "experimental" } })
 LLM.request({ model: selected, prompt: "Hello", providerOptions: { textVerbosity: "low" } })
 LLM.request({ model: selected, prompt: "Hello", providerOptions: { textVerbosity: "verbose" } })
+LLM.request({ model: selected, prompt: "Hello", providerOptions: { serviceTier: "scale" } })
+LLM.request({ model: selected, prompt: "Hello", providerOptions: { serviceTier: "future-tier" } })
 LLM.request({ model: chat, prompt: "Hello", providerOptions: { reasoningEffort: "max" } })
 LLM.request({ model: chat, prompt: "Hello", providerOptions: { reasoningEffort: "experimental" } })

@@ -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)
+    }),
+  )
+})
@@ -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" },
              },
@@ -201,8 +200,8 @@ describe("Gemini route", () => {
        {
          role: "model",
          parts: [
-            { functionCall: { id: undefined, name: "lookup", args: { query: "weather" } } },
-            { functionCall: { id: undefined, name: "lookup", args: { query: "time" } } },
+            { functionCall: { name: "lookup", args: { query: "weather" } } },
+            { functionCall: { name: "lookup", args: { query: "time" } } },
          ],
        },
        {
@@ -210,14 +209,12 @@ describe("Gemini route", () => {
          parts: [
            {
              functionResponse: {
-                id: undefined,
                name: "lookup",
                response: { name: "lookup", content: "sunny" },
              },
            },
            {
              functionResponse: {
-                id: undefined,
                name: "lookup",
                response: { name: "lookup", content: "noon" },
              },
@@ -228,6 +225,104 @@ describe("Gemini route", () => {
    }),
  )

+  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(
@@ -419,13 +514,16 @@ describe("Gemini route", () => {
      expect(prepared.body.contents).toEqual([
        {
          role: "model",
-          parts: [{ functionCall: { name: "read", args: { path: "pixel.png" } }, thoughtSignature: "sig_1" }],
+          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==" } }],
@@ -849,7 +947,7 @@ describe("Gemini route", () => {
      })
      expect(toolCall).toMatchObject({
        id: "provider_call",
-        providerMetadata: { google: { functionCallId: "provider_call", thoughtSignature: "tool_sig" } },
+        providerMetadata: { google: { thoughtSignature: "tool_sig" } },
      })
      expect(response.events.findIndex((event) => event.type === "reasoning-end")).toBeLessThan(
        response.events.findIndex((event) => event.type === "tool-call"),
@@ -857,7 +955,7 @@ describe("Gemini route", () => {

      const prepared = yield* compileRequest(
        LLM.request({
-          model,
+          model: gemini3,
          messages: [
            Message.assistant([
              { type: "reasoning", text: "thinking", providerMetadata: reasoningEnd?.providerMetadata },
@@ -873,7 +971,6 @@ describe("Gemini route", () => {
              name: "lookup",
              result: "done",
              resultType: "text",
-              providerMetadata: toolCall?.providerMetadata,
            }),
          ],
        }),
@@ -977,7 +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",
            },
          ],
@@ -987,7 +1084,7 @@ describe("Gemini route", () => {
          parts: [
            {
              functionResponse: {
-                id: undefined,
+                id: "tool_0",
                name: "lookup",
                response: { name: "lookup", content: "done" },
              },
@@ -1023,15 +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,
            },
          ],
@@ -1059,11 +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",
            },
          ],
@@ -1214,7 +1311,6 @@ describe("Gemini route", () => {
        id: "call_0",
        name: "lookup",
        input: { query: "weather" },
-        providerMetadata: { google: { functionCallId: "call_0" } },
      })
      expect(response.toolCalls[1]).toMatchObject({
        type: "tool-call",
@@ -1230,6 +1326,37 @@ 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({
@@ -1365,6 +1492,73 @@ describe("Gemini route", () => {
    }),
  )

+  it.effect("survives explicit null usage counts", () =>
+    Effect.gen(function* () {
+      const response = yield* LLMClient.generate(request).pipe(
+        Effect.provide(
+          fixedResponse(
+            sseEvents(
+              { candidates: [{ content: { role: "model", parts: [{ text: "Hi" }] } }] },
+              { usageMetadata: { promptTokenCount: null, candidatesTokenCount: 5 } },
+            ),
+          ),
+        ),
+      )
+
+      expect(response.text).toBe("Hi")
+      expect(response.usage).toMatchObject({ outputTokens: 5, totalTokens: 5 })
+      expect(response.usage?.inputTokens).toBeUndefined()
+      expect(response.usage?.nonCachedInputTokens).toBeUndefined()
+      expect(response.usage?.cacheReadInputTokens).toBeUndefined()
+      expect(response.usage?.reasoningTokens).toBeUndefined()
+    }),
+  )
+
+  it.effect("survives null candidates, content, parts, and finish reason", () =>
+    Effect.gen(function* () {
+      const response = yield* LLMClient.generate(request).pipe(
+        Effect.provide(
+          fixedResponse(
+            sseEvents(
+              { candidates: null },
+              { candidates: [{ content: { role: "model", parts: null } }] },
+              { candidates: [{ content: null, finishReason: null }] },
+              {
+                candidates: [
+                  { content: { role: "model", parts: [{ text: "Hello" }] }, finishReason: "STOP" as const },
+                ],
+              },
+            ),
+          ),
+        ),
+      )
+
+      expect(response.text).toBe("Hello")
+      expect(response.finishReason).toEqual({ normalized: "stop", raw: "STOP" })
+    }),
+  )
+
+  it.effect("treats a null thought flag on a text part as visible output", () =>
+    Effect.gen(function* () {
+      const response = yield* LLMClient.generate(request).pipe(
+        Effect.provide(
+          fixedResponse(
+            sseEvents({
+              candidates: [
+                { content: { role: "model", parts: [{ text: "Visible", thought: null }] }, finishReason: "STOP" },
+              ],
+            }),
+          ),
+        ),
+      )
+      const reasoningStart = response.events.find((event) => event.type === "reasoning-start")
+
+      expect(reasoningStart).toBeUndefined()
+      expect(response.reasoning ?? "").toBe("")
+      expect(response.text).toBe("Visible")
+    }),
+  )
+
  it.effect("fails invalid stream events", () =>
    Effect.gen(function* () {
      const error = yield* LLMClient.generate(request).pipe(
@@ -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)
+    }),
+  )
+})
@@ -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({
@@ -342,6 +342,7 @@ describe("OpenAI Chat route", () => {
          },
          { role: "tool", tool_call_id: "call_1", content: encodeJson({ forecast: "sunny" }) },
        ],
+        tools: [],
        stream: true,
        stream_options: { include_usage: true },
      })
@@ -78,6 +78,45 @@ describe("Open Responses-compatible route", () => {
    }),
  )

+  it.effect("uses data URLs for embedded PDF messages and tool results", () =>
+    Effect.gen(function* () {
+      const model = configure({
+        apiKey: "test-key",
+        baseURL: "https://responses.example.test/v1",
+        provider: "example",
+      }).model("example-model")
+      const pdf = "data:application/pdf;base64,JVBERi0xLjQ="
+      const prepared = yield* compileRequest(
+        LLM.request({
+          model,
+          messages: [
+            Message.user([{ type: "media", mediaType: "application/pdf", data: pdf, filename: "input.pdf" }]),
+            Message.assistant({ type: "tool-call", id: "call_1", name: "read", input: {} }),
+            Message.tool({
+              id: "call_1",
+              name: "read",
+              resultType: "content",
+              result: [{ type: "file", uri: pdf, mime: "application/pdf", name: "result.pdf" }],
+            }),
+          ],
+        }),
+      )
+
+      expect(prepared.body.input).toEqual([
+        {
+          role: "user",
+          content: [{ type: "input_file", filename: "input.pdf", file_data: pdf }],
+        },
+        { type: "function_call", call_id: "call_1", name: "read", arguments: "{}" },
+        {
+          type: "function_call_output",
+          call_id: "call_1",
+          output: [{ type: "input_file", filename: "result.pdf", file_data: pdf }],
+        },
+      ])
+    }),
+  )
+
  it.effect("rejects OpenAI-native tools", () =>
    Effect.gen(function* () {
      const model = configure({
@@ -114,7 +153,12 @@ describe("Open Responses-compatible route", () => {

      expect(prepared.body).toMatchObject({
        input: [
-          { type: "message", role: "assistant", content: [{ type: "output_text", text: "Unclassified." }], phase: null },
+          {
+            type: "message",
+            role: "assistant",
+            content: [{ type: "output_text", text: "Unclassified." }],
+            phase: null,
+          },
        ],
      })
    }),
@@ -189,6 +233,7 @@ describe("Open Responses-compatible route", () => {
          streamOptions: { includeObfuscation: false },
          topLogprobs: 3,
          truncation: "auto",
+          serviceTier: "provider-tier",
          allowedTools: { toolNames: ["lookup"] },
          maxToolCalls: 2,
          parallelToolCalls: false,
@@ -213,6 +258,7 @@ describe("Open Responses-compatible route", () => {
        presence_penalty: 0.2,
        frequency_penalty: -0.1,
        truncation: "auto",
+        service_tier: "provider-tier",
        tool_choice: {
          type: "allowed_tools",
          mode: "auto",
@@ -188,13 +188,11 @@ describe("OpenAI Responses route", () => {
    }),
  )

-  it.effect("omits unsupported semantic service tiers", () =>
+  it.effect("passes through provider-defined service tiers", () =>
    Effect.gen(function* () {
-      const prepared = yield* compileRequest(
-        LLMRequest.update(request, { providerOptions: { serviceTier: "unsupported" } }),
-      )
+      const prepared = yield* compileRequest(LLMRequest.update(request, { providerOptions: { serviceTier: "scale" } }))

-      expect(prepared.body).not.toHaveProperty("service_tier")
+      expect(prepared.body.service_tier).toBe("scale")
    }),
  )

@@ -1273,7 +1271,7 @@ describe("OpenAI Responses route", () => {
        {
          type: "input_file",
          filename: "report.pdf",
-          file_data: "JVBERi0xLjQ=",
+          file_data: "data:application/pdf;base64,JVBERi0xLjQ=",
        },
      ])
    }),
@@ -1300,7 +1298,7 @@ describe("OpenAI Responses route", () => {
      )

      expect(expectToolOutput(prepared.body).output).toEqual([
-        { type: "input_file", filename: "report.pdf", file_data: base64 },
+        { type: "input_file", filename: "report.pdf", file_data: dataUrl },
      ])
    }),
  )
@@ -1333,7 +1331,7 @@ describe("OpenAI Responses route", () => {
        {
          type: "input_file",
          filename: "report.pdf",
-          file_data: "JVBERi0xLjQ=",
+          file_data: "data:application/pdf;base64,JVBERi0xLjQ=",
        },
      ])
    }),
@@ -1358,7 +1356,7 @@ describe("OpenAI Responses route", () => {
      )

      expect(expectToolOutput(prepared.body).output).toEqual([
-        { type: "input_file", filename: "file", file_data: "AAECAw==" },
+        { type: "input_file", filename: "file", file_data: "data:audio/mpeg;base64,AAECAw==" },
      ])
    }),
  )
@@ -2652,6 +2650,47 @@ describe("OpenAI Responses route", () => {
    }),
  )

+  it.effect("decodes computer_call as provider-executed tool-call + tool-result", () =>
+    Effect.gen(function* () {
+      const item = {
+        type: "computer_call",
+        id: "computer_1",
+        call_id: "call_1",
+        status: "completed",
+        action: { type: "click", x: 100, y: 200 },
+      }
+      const response = yield* LLMClient.generate(request).pipe(
+        Effect.provide(
+          fixedResponse(
+            sseEvents(
+              { type: "response.output_item.done", item },
+              { type: "response.completed", response: { usage: { input_tokens: 5, output_tokens: 1 } } },
+            ),
+          ),
+        ),
+      )
+
+      expect(response.events.filter((event) => event.type === "tool-call" || event.type === "tool-result")).toEqual([
+        {
+          type: "tool-call",
+          id: "computer_1",
+          name: "computer_use",
+          input: { type: "click", x: 100, y: 200 },
+          providerExecuted: true,
+          providerMetadata: { openai: { itemId: "computer_1" } },
+        },
+        {
+          type: "tool-result",
+          id: "computer_1",
+          name: "computer_use",
+          result: { type: "json", value: item },
+          providerExecuted: true,
+          providerMetadata: { openai: { itemId: "computer_1" } },
+        },
+      ])
+    }),
+  )
+
  it.effect("decodes image generation output as image content", () =>
    Effect.gen(function* () {
      const item = {
@@ -2765,7 +2804,7 @@ describe("OpenAI Responses route", () => {
            {
              type: "input_file",
              filename: "report.pdf",
-              file_data: "JVBERi0xLjQ=",
+              file_data: "data:application/pdf;base64,JVBERi0xLjQ=",
            },
          ],
        },
@@ -2796,7 +2835,7 @@ describe("OpenAI Responses route", () => {
            {
              type: "input_file",
              filename: "report.pdf",
-              file_data: "JVBERi0xLjQ=",
+              file_data: "data:application/pdf;base64,JVBERi0xLjQ=",
            },
          ],
        },
@@ -2821,7 +2860,7 @@ describe("OpenAI Responses route", () => {
            {
              type: "input_file",
              filename: "file",
-              file_data: "AAECAw==",
+              file_data: "data:application/x-tar;base64,AAECAw==",
            },
          ],
        },
@@ -3016,36 +3055,42 @@ 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("classifies a detail-free error event as a transient provider failure", () =>
    Effect.gen(function* () {
      const error = yield* LLMClient.generate(request).pipe(
-        Effect.provide(fixedResponse(sseEvents({ type: "error" }))),
+        Effect.provide(fixedResponse(sseEvents({ type: "error", sequence_number: 2 }))),
        Effect.flip,
      )

-      expect(error.reason).toMatchObject({ _tag: "UnknownProvider", message: "OpenAI Responses stream error" })
+      expect(error.reason).toMatchObject({ _tag: "ProviderInternal" })
+      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)
    }),
  )

@@ -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 }),
@@ -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.
@@ -259,6 +259,22 @@ 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)
 }
@@ -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)
@@ -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")
 })
@@ -179,6 +179,7 @@ async function expectMountedTree(page: Page, total: number) {
 }

 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()
@@ -188,15 +189,20 @@ async function expectSideGeometry(page: Page) {
      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")!
@@ -226,6 +232,30 @@ async function expectBottomGeometry(page: Page) {
  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, "")
 }
@@ -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",
@@ -3,9 +3,9 @@ import { createTwoFilesPatch } from "diff"
 import {
  assistantMessage,
  setupTimeline,
-  textPart,
  toolPart,
  userMessage,
+  userText,
 } from "../performance/timeline-stability/fixture"

 test("renders completed write content", async ({ page }) => {
@@ -82,9 +82,9 @@ test("keeps an expanded file diff header at the same viewport position", async (
  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")
-  const timeline = await setupTimeline(page, {
+  await setupTimeline(page, {
    messages: [
-      userMessage(),
+      userMessage([userText("Preceding context ".repeat(120))]),
      assistantMessage([
        toolPart(
          id,
@@ -105,7 +105,6 @@ test("keeps an expanded file diff header at the same viewport position", async (
            },
          },
        ),
-        textPart("prt_after_anchored_patch", "The diff is ready.\n\n".repeat(4)),
      ]),
    ],
    viewport: { width: 1200, height: 600 },
@@ -113,7 +112,21 @@ test("keeps an expanded file diff header at the same viewport position", async (

  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
  })
@@ -121,11 +134,28 @@ test("keeps an expanded file diff header at the same viewport position", async (
  await expect
    .poll(() => scroller.evaluate((element) => element.scrollHeight - element.clientHeight - element.scrollTop))
    .toBeLessThanOrEqual(0.5)
-  await trigger.dispatchEvent("wheel", { deltaY: -1, deltaMode: 0 })
-  await trigger.dispatchEvent("pointerdown")
+  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)
-  await trigger.dispatchEvent("click")
+  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)
@@ -133,9 +163,10 @@ test("keeps an expanded file diff header at the same viewport position", async (
  const scrollTop = await scroller.evaluate((element) => element.scrollTop)
  await scroller.hover()
  await page.mouse.wheel(0, 200)
-  await timeline.settle(40)
+  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).toBeGreaterThan(50)
  expect(scrolled).toBeLessThan(400)

  const expandedY = await trigger.evaluate((element) => element.getBoundingClientRect().y)
@@ -150,6 +181,16 @@ test("keeps an expanded file diff header at the same viewport position", async (

  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)
@@ -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`
@@ -1,6 +1,15 @@
 import { expect, test } from "@playwright/test"
 import type { SessionMessageAssistant, SessionMessageInfo } from "@opencode-ai/client/promise"
-import { event, session, sessionID, setupTimeline, toolPart } 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

@@ -73,23 +82,102 @@ 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: [toolPart("call_subagent", "subagent", "streaming", {})],
+        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()
-  await expect(delegating.locator('[data-component="text-shimmer"]')).toHaveAttribute(
-    "aria-label",
-    "Delegating agent...",
-  )
+  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)")
@@ -127,11 +215,11 @@ test("renders the moved location notice in its compact timeline style", async ({
  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", "13px")
+  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", "13px")
+  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")
@@ -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 }) => {
@@ -121,19 +125,20 @@ 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" } }),
      ]),
    ],
  })

  for (const [id, name] of [
-    [pending, "sample-skill"],
+    [pending, "frontend-design"],
    [completed, "OpenCode"],
  ] as const) {
    const skill = page.locator(`[data-timeline-part-id="${id}"]`)
    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)
@@ -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="${sessionHref(childID)}"]`)
+  await expect(childTab).toHaveCount(1)
+  await childTab.click()
+  await Promise.all([expect(page).toHaveURL(sessionHref(childID)), expectSessionTitle(page, taskDescription)])
+})
+
 test("shows the not found fallback when the viewed session is deleted", async ({ page }) => {
  const events: OpenCodeEvent[] = []
  await setup(page, () => events.splice(0, 1))
@@ -10,11 +10,13 @@ const ptyID = "pty_terminal_composer_focus"
 const newPtyID = "pty_terminal_composer_focus_new"
 const server = `http://${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: {
@@ -74,6 +76,7 @@ test.beforeEach(async ({ page }) => {
  )
  await page.routeWebSocket(new RegExp(`/api/pty/${ptyID}/connect`), (ws) => {
    ws.onMessage((message) => ptyInput.push(message.toString()))
+    sendPtyOutput = (data) => ws.send(data)
  })
 })

@@ -90,6 +93,33 @@ test("clears the terminal line with Command+Delete", async ({ page }) => {
  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 }) => {
  await page.goto(`/server/${base64Encode(server)}/session/${sessionID}`)
  await expectSessionTitle(page, "Terminal composer focus")
@@ -213,7 +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) {
@@ -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 +104,454 @@ 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)
+  const reviewContent = page.locator('[data-component="session-review-v2"]')
+  await reviewContent.evaluate((element) => element.setAttribute("data-cache-probe", "original"))
+  await reviewToggle.click()
+  await expect(page.locator("#review-panel")).toBeHidden()
+  await expect(reviewContent).toHaveAttribute("data-cache-probe", "original")
+  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 expect(reviewContent).toHaveAttribute("data-cache-probe", "original")
+  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 expectSideSlideSettled(page, 2)
+  await expectHiddenSideAligned(page)
+
+  await resetHeightMotions(page)
+  await resetHorizontalScrolls(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 expectSideSlideSettled(page, 3)
+  await expectNoHeightMotion(page)
+  await expectNoHorizontalScroll(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
+  widthEnds: number
+  horizontalScrolls: 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,
+      widthEnds: 0,
+      horizontalScrolls: [],
+      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("transitionend", (event) => {
+      if (!(event.target instanceof Element)) return
+      if (event.propertyName === "width" && event.target.getAttribute("data-slot") === "session-chat-panel")
+        probe.widthEnds++
+    })
+    document.addEventListener("animationstart", (event) => {
+      if (!(event.target instanceof Element) || event.target.getAttribute("data-component") !== "terminal-panel") return
+      probe.animations.push(event.animationName)
+    })
+    window.addEventListener("scroll", () => probe.horizontalScrolls.push(window.scrollX))
+    ;(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 expectSideSlideSettled(page: Page, count: number) {
+  await expect
+    .poll(() => page.evaluate(() => (window as Window & { __panelMotion?: MotionProbe }).__panelMotion?.widthEnds ?? 0))
+    .toBeGreaterThanOrEqual(count)
+}
+
+async function expectNoHeightMotion(page: Page) {
+  const heights = await page.evaluate(
+    () => (window as Window & { __panelMotion?: MotionProbe }).__panelMotion?.heights ?? [],
+  )
+  expect(heights).toEqual([])
+}
+
+async function expectHiddenSideAligned(page: Page) {
+  await expect
+    .poll(() =>
+      page.evaluate(() => {
+        const chat = document.querySelector<HTMLElement>('[data-slot="session-chat-panel"]')
+        const side = document.querySelector<HTMLElement>('[data-slot="session-side-panel-presence"]')
+        if (!chat?.parentElement || !side) return Number.POSITIVE_INFINITY
+        const row = chat.parentElement.getBoundingClientRect()
+        const hidden = side.getBoundingClientRect()
+        return Math.max(
+          Math.abs(row.top - hidden.top),
+          Math.abs(row.right - hidden.right),
+          Math.abs(row.bottom - hidden.bottom),
+        )
+      }),
+    )
+    .toBeLessThanOrEqual(1)
+}
+
+async function resetHorizontalScrolls(page: Page) {
+  await page.evaluate(() => {
+    const probe = (window as Window & { __panelMotion?: MotionProbe }).__panelMotion
+    if (probe) probe.horizontalScrolls = []
+  })
+}
+
+async function expectNoHorizontalScroll(page: Page) {
+  const scrolls = await page.evaluate(
+    () => (window as Window & { __panelMotion?: MotionProbe }).__panelMotion?.horizontalScrolls ?? [],
+  )
+  expect(Math.max(0, ...scrolls)).toBe(0)
+  expect(await page.evaluate(() => window.scrollX)).toBe(0)
+}
+
+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, "")
 }
@@ -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")
@@ -52,6 +52,7 @@
    "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",
@@ -1,4 +1,5 @@
 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 "@/providers/models/selection"
 import type { ServerSDK } from "@/runtime/server/client"
@@ -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
@@ -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={
@@ -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
@@ -1,5 +1,6 @@
 import { describe, expect, test } from "bun:test"
 import type { ModelSelection } from "@/providers/models/selection"
+import type { SessionMessageUser } from "@opencode-ai/client/promise"
 import { Skill } from "@opencode-ai/schema/skill"
 import type { ActiveComposerAdapter, ComposerControls, ComposerSession, NewSessionComposerAdapter } from "./adapter"
 import { createMemoryComposerState } from "./state"
@@ -69,6 +70,8 @@ function submitInput(
 function session(input: {
  calls: string[]
  prompt: (value: Parameters<ComposerSession["data"]["session"]["prompt"]>[0]) => Promise<void>
+  handoff?: ComposerSession["handoff"]
+  statuses?: ("idle" | "running")[]
  current?: ComposerSession["current"]
  admitted?: (messageID: string) => boolean
  shell?: () => Promise<unknown>
@@ -77,6 +80,7 @@ function session(input: {
  return {
    id: "session-1",
    directory: "C:/repo",
+    handoff: input.handoff,
    current: input.current ?? (() => undefined),
    admitted: input.admitted ?? (() => false),
    api: {
@@ -92,6 +96,7 @@ function session(input: {
    data: {
      location: { command: { list: () => [] } },
      session: {
+        setStatus: (_sessionID, status) => input.statuses?.push(status),
        prompt: async (value) => {
          input.calls.push("prompt")
          await input.prompt(value)
@@ -140,10 +145,12 @@ describe("Composer submission", () => {

  test("starts and promotes a New Session once before admitting its first prompt", async () => {
    const draft = createMemoryComposerState({ prompt: "first prompt" }).capture()
-    const promoted = createMemoryComposerState().capture()
+    const promoted = createMemoryComposerState({ prompt: "restored draft" }).capture()
    const calls: string[] = []
+    const statuses: ("idle" | "running")[] = []
    const admitted = Promise.withResolvers<Parameters<ComposerSession["data"]["session"]["prompt"]>[0]>()
-    const target = session({ calls, prompt: async (value) => admitted.resolve(value) })
+    const cleanupReady = Promise.withResolvers<void>()
+    const target = session({ calls, statuses, prompt: async (value) => admitted.resolve(value) })
    const adapter: NewSessionComposerAdapter = {
      kind: "new-session",
      state: draft,
@@ -156,20 +163,72 @@ describe("Composer submission", () => {
      async start(_selection, submission) {
        calls.push("start")
        submission.retarget(promoted)
-        return target
+        return { session: target, cleanupReady: cleanupReady.promise }
      },
    }

-    await submitInput(adapter).submit(new Event("submit"))
+    const submitted = submitInput(adapter).submit(new Event("submit"))
    const request = await admitted.promise

-    expect(calls).toEqual(["start", "submitted", "switch-agent", "switch-model", "prompt"])
+    expect(calls).toEqual(["start", "switch-agent", "switch-model", "prompt"])
+    expect(statuses).toEqual(["running"])
+    expect(promoted.current()).toMatchObject([{ type: "text", content: "restored draft" }])
+    cleanupReady.resolve()
+    await submitted
+
+    expect(calls).toEqual(["start", "switch-agent", "switch-model", "prompt", "submitted"])
    expect(request.delivery).toBe("steer")
    expect(request.text).toBe("first prompt")
    expect(draft.current()).toEqual([{ type: "text", content: "", start: 0, end: 0 }])
    expect(promoted.current()).toEqual([{ type: "text", content: "", start: 0, end: 0 }])
  })

+  test("hands off image-only first prompts before admission", async () => {
+    const draft = createMemoryComposerState().capture()
+    draft.set([
+      { type: "text", content: "", start: 0, end: 0 },
+      {
+        type: "image",
+        id: "attachment",
+        filename: "image.png",
+        mime: "image/png",
+        blob: { id: "attachment", url: "data:image/png;base64,YQ==" },
+      },
+    ])
+    const handedOff = Promise.withResolvers<SessionMessageUser>()
+    const target = session({
+      calls: [],
+      handoff: { set: handedOff.resolve, clear() {} },
+      prompt: async () => undefined,
+    })
+    const adapter: NewSessionComposerAdapter = {
+      kind: "new-session",
+      state: draft,
+      ready: () => true,
+      controls,
+      working: () => false,
+      submitted() {},
+      async start() {
+        return { session: target, cleanupReady: Promise.resolve() }
+      },
+    }
+
+    await submitInput(adapter).submit(new Event("submit"))
+
+    expect(await handedOff.promise).toMatchObject({
+      type: "user",
+      text: "",
+      files: [
+        {
+          data: "",
+          mime: "image/png",
+          source: { type: "uri", uri: "data:image/png;base64,YQ==" },
+          name: "image.png",
+        },
+      ],
+    })
+  })
+
  test("does not restore a prompt already acknowledged by the durable inbox", async () => {
    const state = createMemoryComposerState({ prompt: "admitted prompt" }).capture()
    const checked = Promise.withResolvers<void>()
@@ -233,7 +292,7 @@ describe("Composer submission", () => {
      submitted() {},
      async start(_selection, submission) {
        submission.retarget(promoted)
-        return target
+        return { session: target, cleanupReady: Promise.resolve() }
      },
    }

@@ -250,10 +309,12 @@ describe("Composer submission", () => {
  test("reuses the message ID when an unacknowledged admission is retried", async () => {
    const state = createMemoryComposerState({ prompt: "retry me" }).capture()
    const attempts: string[] = []
+    const statuses: ("idle" | "running")[] = []
    const first = Promise.withResolvers<void>()
    const second = Promise.withResolvers<void>()
    const target = session({
      calls: [],
+      statuses,
      prompt: async (value) => {
        attempts.push(value.id ?? "")
        throw new Error("network unavailable")
@@ -283,6 +344,7 @@ describe("Composer submission", () => {

    expect(attempts).toHaveLength(4)
    expect(new Set(attempts).size).toBe(1)
+    expect(statuses).toEqual(["running", "idle", "running", "idle"])
    expect(state.current()).toMatchObject([{ type: "text", content: "retry me" }])
  })

@@ -1,4 +1,5 @@
 import { SessionMessage } from "@opencode-ai/schema/session-message"
+import type { SessionMessageUser } from "@opencode-ai/client/promise"
 import { Event } from "@opencode-ai/schema/event"
 import type { Accessor } from "solid-js"
 import type { PromptHistoryComment } from "./history/entry"
@@ -65,15 +66,43 @@ export function createComposerSubmit(input: ComposerSubmitInput) {
    const comments = input.comments.capture()

    try {
-      const session =
+      const started =
        input.adapter.kind === "active-session"
-          ? input.adapter.session()
+          ? { session: input.adapter.session(), cleanupReady: Promise.resolve() }
          : await input.adapter.start(value.selection, submission)
-      if (!session) return
+      if (!started) return
+      const session = started.session

      input.addToHistory(value.prompt, value.mode)
      input.resetHistory()
      const restore = () => restoreSubmission(input, submission, value, comments)
+
+      const command = value.mode === "normal" ? findCommand(session, value.text) : undefined
+      if (value.mode === "normal" && !command) {
+        if (value.images.length > 0) session.handoff?.set(handoffMessage(value))
+        const optimisticBusy = !input.adapter.working()
+        if (optimisticBusy) session.data.session.setStatus(session.id, "running")
+        const sending = sendPrompt(session, value).then(
+          () => ({ ok: true as const }),
+          (error) => ({ ok: false as const, error }),
+        )
+        await started.cleanupReady
+        input.adapter.submitted()
+        submission.context
+          .filter((item) => !!item.comment?.trim())
+          .forEach((item) => submission.target().context.remove(item.key))
+        input.comments.clear()
+        clearSubmission(input, submission)
+        void sending.then((result) => {
+          if (!result.ok)
+            failSubmission(input, session, "prompt", result.error, restore, value.id, () => {
+              if (optimisticBusy) session.data.session.setStatus(session.id, "idle")
+            })
+        })
+        return
+      }
+
+      await started.cleanupReady
      input.adapter.submitted()

      if (value.mode === "shell") {
@@ -82,7 +111,6 @@ export function createComposerSubmit(input: ComposerSubmitInput) {
        return
      }

-      const command = findCommand(session, value.text)
      if (command) {
        clearSubmission(input, submission)
        void sendCommand(session, value, command).catch((error) =>
@@ -91,14 +119,6 @@ export function createComposerSubmit(input: ComposerSubmitInput) {
        return
      }

-      submission.context
-        .filter((item) => !!item.comment?.trim())
-        .forEach((item) => submission.target().context.remove(item.key))
-      input.comments.clear()
-      clearSubmission(input, submission)
-      void sendPrompt(session, value).catch((error) =>
-        failSubmission(input, session, "prompt", error, restore, value.id),
-      )
    } finally {
      submitting.delete(input.adapter.state)
    }
@@ -110,6 +130,29 @@ export function createComposerSubmit(input: ComposerSubmitInput) {
  }
 }

+function handoffMessage(value: ComposerSubmission): SessionMessageUser {
+  return {
+    id: value.id,
+    type: "user",
+    text: value.text,
+    files: value.images.map((image) => ({
+      data: "",
+      mime: image.mime,
+      source: { type: "uri", uri: image.blob.url },
+      name: image.sourcePath ?? image.filename,
+    })),
+    metadata: {
+      displayText: value.text,
+      agent: value.selection.agent,
+      model: {
+        ...value.selection.model,
+        ...(value.selection.variant ? { variant: value.selection.variant } : {}),
+      },
+    },
+    time: { created: Date.now() },
+  }
+}
+
 function readSubmission(
  input: ComposerSubmitInput,
  prompt: Prompt,
@@ -313,8 +356,11 @@ function failSubmission(
  error: unknown,
  restore: () => boolean,
  messageID?: string,
+  rollback?: () => void,
 ) {
  if (messageID && session.admitted(messageID)) return
+  if (messageID) session.handoff?.clear(messageID)
+  rollback?.()
  restore()
  input.notify.failed(kind, error)
 }
@@ -1,6 +1,7 @@
 export { AppBaseProviders, AppInterface, preloadRoute } from "./app"
 export { ACCEPTED_FILE_EXTENSIONS } from "./runtime/platform/file-picker"
 export { useCommand } from "./shell/commands/command"
+export { currentRoute, type LayoutRoute, useCurrentRoute } from "./shell/state/layout"
 export { loadLocaleDict, normalizeLocale, type Locale, useLanguage } from "./runtime/i18n/language"
 export { type FatalRendererErrorLog, type Platform, PlatformProvider } from "./runtime/platform/platform"
 export { ServerConnection, useServers } from "./runtime/server/registry"
@@ -42,6 +42,10 @@ const clearAuthToken = () => {

 const web = createWebPlatform(pkg.version)

+if (import.meta.env.PROD && "serviceWorker" in navigator) {
+  window.addEventListener("load", () => void navigator.serviceWorker.register("/sw.js"), { once: true })
+}
+
 if (import.meta.env.VITE_SENTRY_DSN) {
  init({
    dsn: import.meta.env.VITE_SENTRY_DSN,
@@ -30,6 +30,7 @@ export function HomeCommandPalette(props: {
    opened: server.projects.list,
    stored: () => server.sync.data.project,
    load: (search, signal) => server.sdk.api.session.list({ parentID: null, search, limit: 50 }, { signal }),
+    get: (sessionID, signal) => server.sdk.api.session.get({ sessionID }, { signal }),
    untitled: () => language.t("command.session.new"),
    category: () => language.t("command.category.session"),
  })
@@ -137,6 +137,17 @@ export function createHomeSessionsController(home: HomeController) {
      showProjectName: () => !home.project.selected(),
      server: () => home.selection.value().server,
      canCreate: () => !!home.project.newSession(),
+      lookup: async (sessionID: string) => {
+        const ctx = home.server.focusedContext()
+        if (!ctx) return
+        const result = await ctx.sdk.api.session.get({ sessionID })
+        if (result.time.archived) return
+        return buildHomeSessionRecords({
+          sessions: () => [result],
+          projectDirectories,
+          projects: home.project.list,
+        })[0]
+      },
      create: home.project.openNewSession,
      open: (session: SessionInfo, options?: OpenSessionOptions) => {
        const directoryKey = pathKey(session.location.directory)
@@ -8,13 +8,21 @@ import { createMemo, onCleanup } from "solid-js"
 import { createStore } from "solid-js/store"
 import type { HomeController } from "../model"
 import { homeSessionSearchKey, type HomeSessionRecord, type HomeSessionsController } from "./controller"
+import { looksLikeSessionID } from "@/session/search"

 type HomeSessionSearchSource = Pick<HomeSessionsController, "data" | "session">

 export function createHomeSessionSearchController(home: HomeController, sessions: HomeSessionSearchSource) {
  const command = useCommand()
  const language = useLanguage()
-  const [state, setState] = createStore({ value: "", focused: false, highlighted: "" })
+  const [state, setState] = createStore({
+    value: "",
+    focused: false,
+    highlighted: "",
+    exact: undefined as HomeSessionRecord | undefined,
+    lookingUp: false,
+  })
+  let lookup = 0
  let root: HTMLDivElement | undefined
  let input: HTMLInputElement | undefined
  let list: HTMLDivElement | undefined
@@ -22,9 +30,11 @@ export function createHomeSessionSearchController(home: HomeController, sessions
  const results = createMemo(() => {
    const value = query().toLowerCase()
    if (!value) return []
-    return sessions.data
+    const records = sessions.data
      .searchRecords()
      .filter((record) => `${sessionLabel(record.session)} ${record.projectName}`.toLowerCase().includes(value))
+    if (!state.exact || records.some((record) => record.session.id === state.exact?.session.id)) return records
+    return [state.exact, ...records]
  })
  const active = createMemo(() => {
    const records = results()
@@ -50,6 +60,7 @@ export function createHomeSessionSearchController(home: HomeController, sessions
      close()
    }),
  )
+  onCleanup(() => lookup++)

  command.register("home.search", () => [
    {
@@ -67,7 +78,26 @@ export function createHomeSessionSearchController(home: HomeController, sessions
  }

  function close() {
-    setState({ value: "", focused: false })
+    lookup++
+    setState({ value: "", focused: false, exact: undefined, lookingUp: false })
+  }
+
+  function update(value: string) {
+    const current = ++lookup
+    const sessionID = value.trim()
+    setState({ value, highlighted: "", exact: undefined, lookingUp: false })
+    if (!looksLikeSessionID(sessionID)) return
+    setState("lookingUp", true)
+    void sessions.session.lookup(sessionID).then(
+      (record) => {
+        if (current !== lookup) return
+        setState({ exact: record, lookingUp: false })
+      },
+      () => {
+        if (current !== lookup) return
+        setState("lookingUp", false)
+      },
+    )
  }

  function select(record: HomeSessionRecord, options?: { background?: boolean }) {
@@ -81,11 +111,11 @@ export function createHomeSessionSearchController(home: HomeController, sessions
      placeholder,
      open,
      focus,
-      input: (value: string) => setState({ value, highlighted: "" }),
+      input: update,
      close,
    },
    result: {
-      loading: sessions.data.loading,
+      loading: () => sessions.data.loading() || state.lookingUp,
      list: results,
      active,
      noResultsLabel: () => language.t("home.sessions.search.noResults", { query: query() }),
@@ -509,7 +509,7 @@ function HomeSessionsEmpty(props: { onNewSession?: () => void; language: ReturnT
    <div class="flex min-h-full flex-col items-center gap-4 px-6 pt-[52px] text-center">
      <div
        class={`
-          shrink-0 text-[13px] leading-[13px] tracking-[-0.04px]
+          shrink-0 text-[13px] leading-text-compact tracking-[-0.04px]
          text-v2-text-text-base [font-weight:530]
        `}
      >
@@ -17,6 +17,14 @@
  font-style: normal;
 }

+@font-face {
+  font-family: "IBM Plex Mono";
+  src: url("@ibm/plex/IBM-Plex-Mono/fonts/complete/woff2/IBMPlexMono-Text.woff2") format("woff2");
+  font-weight: 440;
+  font-style: normal;
+  font-display: swap;
+}
+
@media (display-mode: standalone) {
  /* WebKit excludes safe-area insets from dvh in installed apps. */
  #root {
@@ -25,6 +33,133 @@
 }

@layer components {
+  [data-slot="session-side-panel-presence"][data-opened="true"] {
+    animation: terminal-panel-presence-in 240ms cubic-bezier(0.22, 1, 0.36, 1);
+  }
+
+  [data-slot="session-side-panel-presence"][data-opened="false"] {
+    animation: terminal-panel-presence-out 240ms cubic-bezier(0.22, 1, 0.36, 1) forwards;
+  }
+
+  [data-slot="session-side-region-presence"][data-opened="true"] {
+    animation: side-region-presence-in 240ms cubic-bezier(0.22, 1, 0.36, 1);
+  }
+
+  [data-slot="session-side-region-presence"][data-opened="false"] {
+    animation: side-region-presence-out 240ms cubic-bezier(0.22, 1, 0.36, 1);
+  }
+
+  [data-slot="terminal-panel-presence"][data-opened="true"] {
+    animation: terminal-panel-presence-in 200ms cubic-bezier(0.22, 1, 0.36, 1);
+  }
+
+  [data-slot="terminal-panel-presence"][data-opened="false"] {
+    animation: terminal-panel-presence-out 200ms cubic-bezier(0.22, 1, 0.36, 1) forwards;
+  }
+
+  [data-slot="side-terminal-panel-presence"][data-opened="true"] {
+    animation: side-terminal-panel-presence-in 240ms cubic-bezier(0.22, 1, 0.36, 1);
+  }
+
+  [data-slot="side-terminal-panel-presence"][data-opened="false"] {
+    animation: side-terminal-panel-presence-out 240ms cubic-bezier(0.22, 1, 0.36, 1) forwards;
+  }
+
+  [data-component="terminal-panel"][data-size-animated="true"][data-opened="true"] {
+    animation: terminal-panel-size-in 200ms cubic-bezier(0.22, 1, 0.36, 1);
+  }
+
+  [data-component="terminal-panel"][data-size-animated="true"][data-opened="false"] {
+    animation: terminal-panel-size-out 200ms cubic-bezier(0.22, 1, 0.36, 1);
+  }
+
+  @media (prefers-reduced-motion: reduce) {
+    [data-slot="terminal-panel-presence"],
+    [data-slot="side-terminal-panel-presence"],
+    [data-slot="session-side-panel-presence"],
+    [data-slot="session-side-region-presence"],
+    [data-component="terminal-panel"] {
+      animation: none !important;
+    }
+  }
+
+  @keyframes terminal-panel-presence-in {
+    from {
+      opacity: 0;
+    }
+    to {
+      opacity: 1;
+    }
+  }
+
+  @keyframes terminal-panel-presence-out {
+    from {
+      opacity: 1;
+    }
+    to {
+      opacity: 0;
+    }
+  }
+
+  @keyframes side-terminal-panel-presence-in {
+    from {
+      opacity: 0.999999;
+    }
+    to {
+      opacity: 1;
+    }
+  }
+
+  @keyframes side-terminal-panel-presence-out {
+    from {
+      opacity: 1;
+    }
+    to {
+      opacity: 0.999999;
+      visibility: hidden;
+    }
+  }
+
+  @keyframes side-region-presence-in {
+    from {
+      opacity: 0;
+    }
+    0.01% {
+      opacity: 0.999999;
+    }
+    to {
+      opacity: 1;
+    }
+  }
+
+  @keyframes side-region-presence-out {
+    from {
+      opacity: 1;
+    }
+    to {
+      opacity: 0.999999;
+      visibility: hidden;
+    }
+  }
+
+  @keyframes terminal-panel-size-in {
+    from {
+      height: 0;
+    }
+    to {
+      height: var(--terminal-panel-height);
+    }
+  }
+
+  @keyframes terminal-panel-size-out {
+    from {
+      height: var(--terminal-panel-height);
+    }
+    to {
+      height: 0;
+    }
+  }
+
  [data-component="getting-started"] {
    container-type: inline-size;
    container-name: getting-started;
@@ -1,5 +1,6 @@
 import { base64Encode } from "@opencode-ai/util/encode"
 import { getDirectory } from "@opencode-ai/util/path"
+import type { SessionMessageUser } from "@opencode-ai/client/promise"
 import { startTransition } from "solid-js"
 import type { NewSessionComposerAdapter } from "@/composer/adapter"
 import { useComposerState } from "@/composer/persistence"
@@ -9,11 +10,13 @@ import { useLanguage } from "@/runtime/i18n/language"
 import { useLocal } from "@/providers/models/selection"
 import { usePermission } from "@/session/requests/permission"
 import { useData, useServer } from "@/runtime/server/current"
-import { useServerSDK } from "@/runtime/server/client"
+import { type ServerSDK, useServerSDK } from "@/runtime/server/client"
 import { useTabs } from "@/shell/tabs/tabs"
 import { useWorkspaceLocation } from "@/workspaces/location"
 import { useSessionKey } from "@/session/session-layout"
 import { showToast } from "@/shell/notifications/toast"
+import { SessionRouteKey, SessionStateKey } from "@/runtime/server/scope"
+import { clearSessionMessageHandoff, setSessionMessageHandoff } from "@/session/handoff"

 export function createNewSessionComposerAdapter(props: {
  draftID: string
@@ -53,26 +56,35 @@ export function createNewSessionComposerAdapter(props: {
      })
      if (!sessionDirectory) return

-      const created = await serverSDK.api.session
-        .create({
-          agent: selection.agent,
-          model: {
-            id: selection.model.modelID,
-            providerID: selection.model.providerID,
-            variant: selection.variant,
-          },
-          location: { directory: sessionDirectory },
-        })
-        .catch((error) => {
+      const created = data.session.create({
+        agent: selection.agent,
+        model: {
+          id: selection.model.modelID,
+          providerID: selection.model.providerID,
+          variant: selection.variant,
+        },
+        location: { directory: sessionDirectory },
+      })
+      const creation = created.request.then(
+        () => ({ ok: true as const }),
+        (error) => {
          showToast({
            title: language.t("prompt.toast.sessionCreateFailed.title"),
            description: errorMessage(language, error),
          })
-        })
-      if (!created) return
-
-      data.session.remember(created)
-      await startTransition(() => {
+          return { ok: false as const, error }
+        },
+      )
+      const afterCreation = async <T,>(run: () => Promise<T>) => {
+        const result = await creation
+        if (!result.ok) throw result.error
+        return run()
+      }
+      const sessionKey = SessionStateKey.from(
+        serverSDK.scope,
+        SessionRouteKey.fromRoute(base64Encode(sessionDirectory), created.id),
+      )
+      const cleanupReady = startTransition(() => {
        tabs.updateDraft(props.draftID, { worktree: undefined })
        if (permission.isAutoAcceptingDirectory(projectDirectory)) {
          permission.enableAutoAccept(created.id, sessionDirectory)
@@ -92,13 +104,32 @@ export function createNewSessionComposerAdapter(props: {
      })

      return {
-        id: created.id,
-        directory: sessionDirectory,
-        api: serverSDK.api.session,
-        data,
-        current: () => data.session.get(created.id) ?? created,
-        admitted: (messageID) =>
-          data.session.input.has(created.id, messageID) || !!data.session.message.get(created.id, messageID),
+        cleanupReady,
+        session: {
+          id: created.id,
+          directory: sessionDirectory,
+          handoff: createMessageHandoff(sessionKey, created.id, serverSDK.event),
+          api: {
+            command: (input) => afterCreation(() => serverSDK.api.session.command(input)),
+            shell: (input) => afterCreation(() => serverSDK.api.session.shell(input)),
+            switchAgent: (input) => afterCreation(() => serverSDK.api.session.switchAgent(input)),
+            switchModel: (input) => afterCreation(() => serverSDK.api.session.switchModel(input)),
+          },
+          data: {
+            location: data.location,
+            session: {
+              setStatus: data.session.setStatus,
+              prompt: (input) =>
+                data.session.prompt({
+                  ...input,
+                  gate: Promise.all([input.gate, afterCreation(async () => undefined)]),
+                }),
+            },
+          },
+          current: () => data.session.get(created.id),
+          admitted: (messageID) =>
+            data.session.input.has(created.id, messageID) || !!data.session.message.get(created.id, messageID),
+        },
      }
    },
  }
@@ -111,6 +142,27 @@ export function createNewSessionComposerAdapter(props: {
  }
 }

+function createMessageHandoff(key: string, sessionID: string, event: ServerSDK["event"]) {
+  let unsubscribe: VoidFunction | undefined
+  return {
+    set(message: SessionMessageUser) {
+      unsubscribe?.()
+      setSessionMessageHandoff(key, message)
+      unsubscribe = event.on("session.inbox.enqueued", (item) => {
+        if (item.data.sessionID !== sessionID || item.data.inboxID !== message.id) return
+        unsubscribe?.()
+        unsubscribe = undefined
+        clearSessionMessageHandoff(key, message.id)
+      })
+    },
+    clear(messageID: string) {
+      unsubscribe?.()
+      unsubscribe = undefined
+      clearSessionMessageHandoff(key, messageID)
+    },
+  }
+}
+
 async function resolveSessionDirectory(input: {
  projectDirectory: string
  worktree: string
@@ -139,7 +139,7 @@ function ProviderTip() {
        >
          <button
            type="button"
-            class="flex h-6 min-w-0 items-center rounded-[4px] pl-1.5 text-[13px] leading-none tracking-[-0.04px] text-v2-text-text-faint transition-[background-color,color] duration-150 ease-in-out hover:bg-v2-overlay-simple-overlay-hover hover:text-v2-text-text-muted focus-visible:bg-v2-overlay-simple-overlay-hover focus-visible:text-v2-text-text-muted focus-visible:outline-none"
+            class="flex h-6 min-w-0 items-center rounded-[4px] pl-1.5 text-[13px] leading-text-compact tracking-[-0.04px] text-v2-text-text-faint transition-[background-color,color] duration-150 ease-in-out hover:bg-v2-overlay-simple-overlay-hover hover:text-v2-text-text-muted focus-visible:bg-v2-overlay-simple-overlay-hover focus-visible:text-v2-text-text-muted focus-visible:outline-none"
            onClick={openProviders}
          >
            <span class="truncate">{language.t("home.providerTip")}</span>
@@ -190,7 +190,7 @@ function ProviderPicker(props: { directory?: string; onSelect: (provider: string
            {(group) => (
              <Show when={group.items().length > 0}>
                <section class="flex flex-col">
-                  <div class="px-3 pb-2 text-[13px] font-[440] leading-none tracking-[-0.04px] text-v2-text-text-muted">
+                  <div class="px-3 pb-2 text-[13px] font-[440] leading-text-compact tracking-[-0.04px] text-v2-text-text-muted">
                    {group.title}
                  </div>
                  <For each={group.items()}>
@@ -198,7 +198,7 @@ function ProviderPicker(props: { directory?: string; onSelect: (provider: string
                      <button
                        type="button"
                        data-provider-id={provider.id}
-                        class="flex min-h-9 w-full items-center gap-2 rounded-md px-3 py-2.5 text-left text-[13px] leading-none tracking-[-0.04px] hover:bg-v2-overlay-simple-overlay-hover focus:bg-v2-overlay-simple-overlay-hover focus:outline-none"
+                        class="flex min-h-9 w-full items-center gap-2 rounded-md px-3 py-2.5 text-left text-[13px] leading-text-compact tracking-[-0.04px] hover:bg-v2-overlay-simple-overlay-hover focus:bg-v2-overlay-simple-overlay-hover focus:outline-none"
                        classList={{ "bg-v2-overlay-simple-overlay-hover": store.active === provider.id }}
                        onMouseEnter={() => setStore("active", provider.id)}
                        disabled={store.connecting !== undefined}
@@ -7,6 +7,7 @@ import { Switch } from "@opencode-ai/ui/switch"
 import { TextInput } from "@opencode-ai/ui/text-input"
 import { useFilteredList } from "@opencode-ai/ui/hooks"
 import { For, Show, type Component } from "solid-js"
+import { createStore } from "solid-js/store"
 import { useLocal } from "@/providers/models/selection"
 import { popularProviders } from "@/providers/catalog/providers"
 import { useLanguage } from "@/runtime/i18n/language"
@@ -23,6 +24,7 @@ export const DialogManageModels: Component = () => {
  const local = useLocal()
  const language = useLanguage()
  const dialog = useDialog()
+  const [store, setStore] = createStore({ collapsed: {} as Record<string, boolean> })
  const directory = () => decode64(local.slug())

  const handleConnectProvider = () => {
@@ -120,16 +122,38 @@ export const DialogManageModels: Component = () => {
                }
              >
                <For each={list.grouped.latest}>
-                  {(group) => (
-                    <div class="settings-section" data-component="settings-models-provider">
-                      <div class="settings-models-group-header justify-between">
-                        <div class="flex min-w-0 items-center gap-2">
-                          <ProviderIcon id={group.category} width={16} height={16} class="ml-4 shrink-0" />
-                          <h3 class="settings-section-title">{group.items[0].provider.name}</h3>
-                        </div>
-                        <div>
+                  {(group) => {
+                    const searching = () => list.filter().length > 0
+                    const expanded = () => searching() || !store.collapsed[group.category]
+
+                    return (
+                      <div
+                        class="settings-section"
+                        data-component="settings-models-provider"
+                        data-expanded={expanded() ? "" : undefined}
+                      >
+                        <div class="settings-models-group-header justify-between">
+                          <button
+                            type="button"
+                            class="settings-models-group-trigger"
+                            aria-expanded={expanded()}
+                            disabled={searching()}
+                            onClick={() => setStore("collapsed", group.category, expanded())}
+                          >
+                            <span class="settings-models-group-chevron">
+                              <Icon
+                                name="chevron-down"
+                                size="small"
+                                classList={{ "-rotate-90 rtl:rotate-90": !expanded() }}
+                              />
+                            </span>
+                            <span class="settings-models-group-label">
+                              <ProviderIcon id={group.category} width={16} height={16} class="shrink-0" />
+                              <span class="settings-section-title">{group.items[0].provider.name}</span>
+                            </span>
+                          </button>
                          <Switch
-                            class="mr-6"
+                            class="me-6"
                            checked={providerVisible(group.category)}
                            onChange={(checked) => setProviderVisibility(group.category, checked)}
                            hideLabel
@@ -137,26 +161,28 @@ export const DialogManageModels: Component = () => {
                            {group.items[0].provider.name}
                          </Switch>
                        </div>
+                        <Show when={expanded()}>
+                          <SettingsList>
+                            <For each={group.items}>
+                              {(item) => (
+                                <SettingsRow title={item.name} description="">
+                                  <div>
+                                    <Switch
+                                      checked={local.model.visible({ modelID: item.id, providerID: item.provider.id })}
+                                      onChange={(checked) => setModelVisibility(item, checked)}
+                                      hideLabel
+                                    >
+                                      {item.name}
+                                    </Switch>
+                                  </div>
+                                </SettingsRow>
+                              )}
+                            </For>
+                          </SettingsList>
+                        </Show>
                      </div>
-                      <SettingsList>
-                        <For each={group.items}>
-                          {(item) => (
-                            <SettingsRow title={item.name} description="">
-                              <div>
-                                <Switch
-                                  checked={local.model.visible({ modelID: item.id, providerID: item.provider.id })}
-                                  onChange={(checked) => setModelVisibility(item, checked)}
-                                  hideLabel
-                                >
-                                  {item.name}
-                                </Switch>
-                              </div>
-                            </SettingsRow>
-                          )}
-                        </For>
-                      </SettingsList>
-                    </div>
-                  )}
+                    )
+                  }}
                </For>
              </Show>
            </Show>
@@ -1,44 +1,24 @@
-import { type Accessor, createMemo, createResource } from "solid-js"
-import { createStore } from "solid-js/store"
+import { type Accessor, createMemo } from "solid-js"
 import { DateTime } from "luxon"
 import { filter, firstBy, flat, groupBy, mapValues, pipe, uniqueBy, values } from "remeda"
 import { createSimpleContext } from "@opencode-ai/ui/context"
 import { useProviders } from "@/providers/catalog/providers"
-import { Persist, persisted } from "@/runtime/persistence/storage"
+import { useGlobal } from "@/runtime/server/runtime"

 export type ModelKey = { providerID: string; modelID: string }

 type Visibility = "show" | "hide"
-type User = ModelKey & { visibility: Visibility; favorite?: boolean }
-type Store = {
-  user: User[]
-  recent: ModelKey[]
-  variant?: Record<string, string | undefined>
-}
-
 const RECENT_LIMIT = 5

 function modelKey(model: ModelKey) {
  return `${model.providerID}:${model.modelID}`
 }

-const createModelsPersistedState = () => {
-  const [store, setStore, _, ready] = persisted(
-    Persist.global("model"),
-    createStore<Store>({
-      user: [],
-      recent: [],
-      variant: {},
-    }),
-  )
-
-  return [store, setStore, ready] as const
-}
-
 const createModelsController = (directory: Accessor<string | undefined>) => {
  const providers = useProviders(() => directory())
-
-  const [store, setStore, ready] = createModelsPersistedState()
+  const models = useGlobal().models
+  const store = models.store
+  const setStore = models.set

  const available = createMemo(() =>
    providers.connected().flatMap((p) =>
@@ -148,23 +128,14 @@ const createModelsController = (directory: Accessor<string | undefined>) => {
    setStore("variant", key, value)
  }

-  const [recentModels] = createResource(
-    async () => {
-      const recent = store.recent
-      await ready.promise
-      return recent
-    },
-    (p) => p,
-    { initialValue: [] },
-  )
  return {
-    ready,
+    ready: models.ready,
    list,
    find,
    visible,
    setVisibility,
    recent: {
-      list: () => recentModels()!,
+      list: models.recent,
      push,
    },
    variant: {
@@ -10,9 +10,10 @@ import { Dialog, DialogBody, DialogHeader, DialogTitle } from "@opencode-ai/ui/d
 import { Icon } from "@opencode-ai/ui/icon"
 import { IconButton } from "@opencode-ai/ui/icon-button"
 import { ScrollView } from "@opencode-ai/ui/scroll-view"
-import { List } from "@opencode-ai/ui/list"
 import { Tooltip } from "@opencode-ai/ui/tooltip"
 import { Menu } from "@opencode-ai/ui/menu"
+import { TextInput } from "@opencode-ai/ui/text-input"
+import { ProviderIcon } from "@opencode-ai/ui/provider-icon"
 import { ModelTooltip } from "./tooltip"
 import { useLanguage } from "@/runtime/i18n/language"
 import { decode64 } from "@/runtime/persistence/base64"
@@ -20,6 +21,8 @@ import { handleDocumentSearchKeydown } from "@/shell/commands/search-keydown"
 import { createMenuDismissController } from "@/shell/commands/menu-dismiss"
 import { createEventListener } from "@solid-primitives/event-listener"
 import { matchesModelSearch } from "./search"
+import { SettingsList } from "@/settings/list"
+import "@/settings/settings.css"

 const isFree = (provider: string, cost: { input: number } | undefined) =>
  provider === "opencode" && (!cost || cost.input === 0)
@@ -44,70 +47,182 @@ const sortModelGroups = (a: { category: string; items: ModelItem[] }, b: { categ

 const ModelList: Component<{
  provider?: string
-  class?: string
  onSelect: () => void
-  action?: JSX.Element
  model?: ModelState
 }> = (props) => {
-  const model = props.model ?? useLocal().model
  const language = useLanguage()
+  const controller = createModelSelectorController({
+    model: props.model,
+    provider: () => props.provider,
+    onSelect: props.onSelect,
+  })
+  const [store, setStore] = createStore({
+    search: "",
+    active: "",
+    collapsed: {} as Record<string, boolean>,
+  })
+  const models = createMemo(() => controller.models(store.search))
+  const groups = createMemo(() => controller.groups(models()))
+  const expanded = (provider: string) => store.search.length > 0 || !store.collapsed[provider]
+  const visibleModels = () => models().filter((item) => expanded(item.provider.id))
+  let scrollRef: HTMLDivElement | undefined

-  const models = createMemo(() =>
-    model
-      .list()
-      .filter((m) => model.visible({ modelID: m.id, providerID: m.provider.id }))
-      .filter((m) => (props.provider ? m.provider.id === props.provider : true)),
-  )
+  const setSearch = (value: string) => {
+    const first = controller.models(value).find((item) => value.length > 0 || !store.collapsed[item.provider.id])
+    setStore({ search: value, active: first ? modelKey(first) : "" })
+  }
+  const moveActive = (delta: number) => {
+    const keys = visibleModels().map(modelKey)
+    if (keys.length === 0) return
+    const index = keys.indexOf(store.active)
+    const start = index === -1 ? (delta > 0 ? -1 : 0) : index
+    setStore("active", keys[(start + delta + keys.length) % keys.length])
+    queueMicrotask(() => {
+      scrollRef
+        ?.querySelector<HTMLElement>(`[data-option-key="${CSS.escape(store.active)}"]`)
+        ?.scrollIntoView({ block: "nearest" })
+    })
+  }
+  const selectActive = () => {
+    const item = visibleModels().find((item) => modelKey(item) === store.active)
+    if (item) controller.select(item)
+  }

  return (
-    <List
-      class={`flex-1 px-3 min-h-0 [&_[data-slot=list-scroll]]:flex-1 [&_[data-slot=list-scroll]]:min-h-0 ${props.class ?? ""}`}
-      search={{ placeholder: language.t("dialog.model.search.placeholder"), autofocus: true, action: props.action }}
-      emptyMessage={language.t("dialog.model.empty")}
-      key={(x) => `${x.provider.id}:${x.id}`}
-      items={models}
-      current={model.current()}
-      filterKeys={["provider.name", "name", "id"]}
-      sortBy={(a, b) => a.name.localeCompare(b.name)}
-      groupBy={(x) => x.provider.name}
-      sortGroupsBy={(a, b) => {
-        const aProvider = a.items[0].provider.id
-        const bProvider = b.items[0].provider.id
-        if (popularProviders.includes(aProvider) && !popularProviders.includes(bProvider)) return -1
-        if (!popularProviders.includes(aProvider) && popularProviders.includes(bProvider)) return 1
-        return popularProviders.indexOf(aProvider) - popularProviders.indexOf(bProvider)
-      }}
-      itemWrapper={(item, node) => (
-        <Tooltip
-          appearance="standard"
-          class="w-full"
-          placement="right-start"
-          gutter={12}
-          openDelay={0}
-          value={<ModelTooltip model={item} latest={item.latest} free={isFree(item.provider.id, item.cost)} />}
-        >
-          {node}
-        </Tooltip>
-      )}
-      onSelect={(x) => {
-        model.set(x ? { modelID: x.id, providerID: x.provider.id } : undefined, {
-          recent: true,
-        })
-        props.onSelect()
-      }}
-    >
-      {(i) => (
-        <div class="w-full flex items-center gap-x-2 text-13-regular">
-          <span class="truncate">{i.name}</span>
-          <Show when={isFree(i.provider.id, i.cost)}>
-            <Badge appearance="standard">{language.t("model.tag.free")}</Badge>
-          </Show>
-          <Show when={i.latest}>
-            <Badge appearance="standard">{language.t("model.tag.latest")}</Badge>
+    <div class="flex min-h-0 flex-1 flex-col">
+      <div class="shrink-0 px-4 pt-px pb-3">
+        <div class="relative">
+          <TextInput
+            type="search"
+            appearance="base"
+            class="!w-full self-stretch"
+            placeholder={language.t("dialog.model.search.placeholder")}
+            value={store.search}
+            autofocus
+            spellcheck={false}
+            autocorrect="off"
+            autocomplete="off"
+            autocapitalize="off"
+            onInput={(event) => setSearch(event.currentTarget.value)}
+            onKeyDown={(event) => {
+              if (event.altKey || event.metaKey) return
+              if (event.key === "ArrowDown") {
+                event.preventDefault()
+                moveActive(1)
+                return
+              }
+              if (event.key === "ArrowUp") {
+                event.preventDefault()
+                moveActive(-1)
+                return
+              }
+              if (event.key === "Enter" && !event.isComposing) {
+                event.preventDefault()
+                selectActive()
+              }
+            }}
+            aria-label={language.t("dialog.model.search.placeholder")}
+          />
+          <Show when={store.search}>
+            <IconButton
+              type="button"
+              variant="ghost-muted"
+              size="small"
+              class="settings-tab-search-clear"
+              icon={<Icon name="close" size="large" class="text-v2-icon-icon-muted" />}
+              onClick={() => setSearch("")}
+              aria-label={language.t("common.clear")}
+            />
          </Show>
        </div>
-      )}
-    </List>
+      </div>
+      <div class="relative min-h-0 flex-1">
+        <div ref={(element) => (scrollRef = element)} class="settings-panel settings-models h-full px-4 pt-4 pb-4">
+          <Show
+            when={models().length > 0}
+            fallback={<div class="settings-models-status">{language.t("dialog.model.empty")}</div>}
+          >
+            <For each={groups()}>
+              {(group) => {
+                const searching = () => store.search.length > 0
+                const open = () => expanded(group.category)
+
+                return (
+                  <section class="settings-section" data-expanded={open() ? "" : undefined}>
+                    <h3 class="settings-models-group-header">
+                      <button
+                        type="button"
+                        class="settings-models-group-trigger"
+                        aria-expanded={open()}
+                        disabled={searching()}
+                        onClick={() => setStore("collapsed", group.category, open())}
+                      >
+                        <span class="settings-models-group-chevron">
+                          <Icon name="chevron-down" size="small" classList={{ "-rotate-90 rtl:rotate-90": !open() }} />
+                        </span>
+                        <span class="settings-models-group-label">
+                          <ProviderIcon id={group.category} width={16} height={16} class="shrink-0" />
+                          <span class="settings-section-title">{group.items[0].provider.name}</span>
+                        </span>
+                      </button>
+                    </h3>
+                    <Show when={open()}>
+                      <SettingsList>
+                        <For each={group.items}>
+                          {(item) => (
+                            <button
+                              type="button"
+                              data-component="settings-row"
+                              data-option-key={modelKey(item)}
+                              class="-mx-4 w-[calc(100%+32px)] px-4 text-start first:rounded-t-lg last:rounded-b-lg hover:bg-v2-overlay-simple-overlay-hover focus-visible:bg-v2-overlay-simple-overlay-hover focus-visible:outline-none"
+                              classList={{ "bg-v2-overlay-simple-overlay-hover": store.active === modelKey(item) }}
+                              onMouseEnter={() => setStore("active", modelKey(item))}
+                              onMouseLeave={() => setStore("active", "")}
+                              onClick={() => controller.select(item)}
+                            >
+                              <div data-slot="settings-row-copy">
+                                <div data-slot="settings-row-title" class="flex items-center gap-2">
+                                  <Tooltip
+                                    placement="right-start"
+                                    gutter={12}
+                                    openDelay={0}
+                                    value={
+                                      <ModelTooltip
+                                        model={item}
+                                        latest={item.latest}
+                                        free={isFree(item.provider.id, item.cost)}
+                                        v2
+                                      />
+                                    }
+                                  >
+                                    <span class="min-w-0 truncate">{item.name}</span>
+                                  </Tooltip>
+                                  <Show when={isFree(item.provider.id, item.cost)}>
+                                    <Badge class="shrink-0">{language.t("model.tag.free")}</Badge>
+                                  </Show>
+                                  <Show when={item.latest}>
+                                    <Badge class="shrink-0">{language.t("model.tag.latest")}</Badge>
+                                  </Show>
+                                </div>
+                              </div>
+                              <div data-slot="settings-row-control" class="size-4">
+                                <Show when={controller.current() === modelKey(item)}>
+                                  <Icon name="check" size="small" class="shrink-0 text-v2-icon-icon-base" />
+                                </Show>
+                              </div>
+                            </button>
+                          )}
+                        </For>
+                      </SettingsList>
+                    </Show>
+                  </section>
+                )
+              }}
+            </For>
+          </Show>
+        </div>
+      </div>
+    </div>
  )
 }

@@ -431,18 +546,25 @@ export const DialogSelectModel: Component<{ provider?: string; model?: ModelStat
  }

  return (
-    <Dialog>
-      <DialogHeader hideClose>
+    <Dialog size="large" variant="settings">
+      <DialogHeader hideClose closeLabel={language.t("common.close")}>
        <DialogTitle>{language.t("dialog.model.select.title")}</DialogTitle>
-        <Button class="h-7 -my-1 text-14-medium" icon="plus-small" tabIndex={-1} onClick={provider}>
+        <Button icon="plus" onClick={provider}>
          {language.t("command.provider.connect")}
        </Button>
      </DialogHeader>
-      <DialogBody>
+      <DialogBody class="flex min-h-0 flex-1 flex-col">
        <ModelList provider={props.provider} model={props.model} onSelect={() => dialog.close()} />
-        <Button variant="ghost" class="ml-3 mt-5 mb-6 text-text-base self-start" onClick={manage}>
-          {language.t("dialog.model.manage")}
-        </Button>
+        <div class="shrink-0 border-t border-v2-border-border-muted px-4 py-3">
+          <button
+            type="button"
+            class="flex h-9 w-full items-center gap-2 rounded-md px-3 text-left text-[13px] font-[530] leading-text-compact tracking-[-0.04px] text-v2-text-text-base hover:bg-v2-overlay-simple-overlay-hover focus-visible:bg-v2-overlay-simple-overlay-hover focus-visible:outline-none"
+            onClick={manage}
+          >
+            <Icon name="outline-sliders" size="small" />
+            <span class="min-w-0 flex-1 truncate">{language.t("dialog.model.manage")}</span>
+          </button>
+        </div>
      </DialogBody>
    </Dialog>
  )
@@ -570,10 +570,13 @@ export const dict = {
  "toast.update.action.notYet": "Not yet",

  "error.page.title": "Something went wrong",
+  "error.page.title.status": "Server request failed",
  "error.page.description": "An error occurred while loading the application.",
+  "error.page.description.status": "The server returned an HTTP {{status}} response.",
  "error.page.description.localServerStartup": "An error occurred while starting the local server.",
  "error.page.details.label": "Error Details",
  "error.page.action.restart": "Restart",
+  "error.page.action.reload": "Reload",
  "error.page.action.report": "Report Error",
  "error.page.action.reported": "Error Reported",
  "error.page.action.exportLogs": "Export Logs",
@@ -948,6 +951,8 @@ export const dict = {
  "settings.general.row.showTerminal.description": "Show the terminal button in the desktop title bar",
  "settings.general.row.showStatus.title": "Server status",
  "settings.general.row.showStatus.description": "Show the server status button in the title bar",
+  "settings.general.row.showProjectIcon.title": "Project icon",
+  "settings.general.row.showProjectIcon.description": "Show the project icon in the session header",
  "settings.general.row.mobileTitlebarBottom.title": "Bottom navigation",
  "settings.general.row.mobileTitlebarBottom.description":
    "Place the title bar and session tabs at the bottom of the screen on mobile",
@@ -1,7 +1,7 @@
 import { describe, expect, test } from "bun:test"
 import type { OpenCodeEvent } from "@opencode-ai/client/promise"
 import { createRoot } from "solid-js"
-import { createOpenCodeEventSource } from "./client"
+import { createOpenCodeEventSource, createServerTransport } from "./client"

 const permission = {
  id: "evt_permission",
@@ -84,3 +84,39 @@ describe("server event stream", () => {
    second.dispose()
  })
 })
+
+test("rotates HTTP and PTY clients together", async () => {
+  const requests: Array<{ url: string; authorization: string | null }> = []
+  const fetch = (async (input: string | URL | Request, init?: RequestInit) => {
+    const request = input instanceof Request ? input : new Request(input, init)
+    requests.push({ url: request.url, authorization: request.headers.get("authorization") })
+    return Response.json({ healthy: true, version: "2.0.0-test", pid: 1 })
+  }) as typeof globalThis.fetch
+  const transport = createServerTransport({
+    http: { url: "http://127.0.0.1:4100", username: "opencode", password: "first" },
+    fetch,
+  })
+  const initialPty = transport.pty
+
+  await transport.api.health.get()
+  const replacement = transport.update({
+    url: "http://127.0.0.1:4200",
+    username: "opencode",
+    password: "second",
+  })
+  await transport.api.health.get()
+
+  expect(replacement).toBe(transport.api)
+  expect(transport.pty).not.toBe(initialPty)
+  expect(transport.url).toBe("http://127.0.0.1:4200")
+  expect(requests).toEqual([
+    {
+      url: "http://127.0.0.1:4100/api/health",
+      authorization: `Basic ${btoa("opencode:first")}`,
+    },
+    {
+      url: "http://127.0.0.1:4200/api/health",
+      authorization: `Basic ${btoa("opencode:second")}`,
+    },
+  ])
+})
@@ -72,11 +72,12 @@ type ServerSDKBase = {

 function createServerSdkContextBase(server: ServerConnection.Any, scope: ServerScope): ServerSDKBase {
  const platform = usePlatform()
-  const api = createApiForServer({ server: server.http, fetch: platform.fetch })
-  const pty = createPtyClient(api, { url: server.http.url })
+  const transport = createServerTransport({ http: server.http, fetch: platform.fetch })
  const events = createOpenCodeEventSource()
+  const reconnect = server.type === "sidecar" && server.variant === "base" ? server.reconnect : undefined

-  const connection = createClientConnection(api, {
+  const connection = createClientConnection(transport.api, {
+    reconnect: reconnect ? async (signal) => transport.update(await reconnect(signal)) : undefined,
    flushInterval: 16,
    pageLifecycle: true,
    onEvent(event) {
@@ -85,7 +86,7 @@ function createServerSdkContextBase(server: ServerConnection.Any, scope: ServerS
    log: {
      info(message, data) {
        if (message !== "event stream disconnected") return
-        console.info("[global-sdk] event stream disconnected", { url: server.http.url, ...data })
+        console.info("[global-sdk] event stream disconnected", { url: transport.url, managed: !!reconnect, ...data })
      },
    },
  })
@@ -93,14 +94,48 @@ function createServerSdkContextBase(server: ServerConnection.Any, scope: ServerS
  return {
    server,
    scope,
-    url: server.http.url,
-    api,
-    pty,
+    get url() {
+      return transport.url
+    },
+    get api() {
+      return transport.api
+    },
+    get pty() {
+      return transport.pty
+    },
    connection,
    event: events.event,
  }
 }

+export function createServerTransport(input: { http: ServerConnection.HttpBase; fetch?: typeof globalThis.fetch }): {
+  update(http: ServerConnection.HttpBase): ServerApi
+  readonly url: string
+  readonly api: ServerApi
+  readonly pty: ReturnType<typeof createPtyClient>
+} {
+  const build = (http: ServerConnection.HttpBase) => {
+    const api = createApiForServer({ server: http, fetch: input.fetch })
+    return { http, api, pty: createPtyClient(api, { url: http.url }) }
+  }
+  const state = { current: build(input.http) }
+  return {
+    update(http: ServerConnection.HttpBase) {
+      state.current = build(http)
+      return state.current.api
+    },
+    get url() {
+      return state.current.http.url
+    },
+    get api() {
+      return state.current.api
+    },
+    get pty() {
+      return state.current.pty
+    },
+  }
+}
+
 export type ServerSDK = ServerSDKBase & {
  ensureDirSdkContext: (directory: string) => ReturnType<typeof createDirSdkContext>
 }
@@ -210,7 +210,7 @@ export namespace ServerConnection {
    http: HttpBase
  } & (
    | // Regular desktop server
-    { variant: "base" }
+    { variant: "base"; reconnect?: (signal: AbortSignal) => Promise<HttpBase> }
    // WSL server (windows only)
    | {
        variant: "wsl"
@@ -1,5 +1,5 @@
 import { createSimpleContext } from "@opencode-ai/ui/context"
-import { Accessor, createEffect, createMemo, createRoot, getOwner } from "solid-js"
+import { Accessor, createEffect, createMemo, createResource, createRoot, getOwner } from "solid-js"
 import { createStore } from "solid-js/store"
 import { createServerProjects, RECENTLY_CLOSED_DISPLAY_LIMIT, ServerConnection, useServers } from "./registry"
 import { pathKey } from "@/workspaces/path-key"
@@ -10,6 +10,7 @@ import { createData } from "@opencode-ai/client/solid"
 import type { ServerScope } from "@/runtime/server/scope"
 import { createServerPermissionState } from "@/session/requests/server-permission"
 import { createServerNotificationState } from "@/shell/notifications/notification"
+import { Persist, persisted } from "@/runtime/persistence/storage"

 export const { use: useGlobal, provider: GlobalProvider } = createSimpleContext({
  name: "Global",
@@ -24,6 +25,7 @@ export const { use: useGlobal, provider: GlobalProvider } = createSimpleContext(
        serverKey: undefined as ServerConnection.Key | undefined,
      },
    })
+    const models = createGlobalModels()

    const settingsServer = createMemo(() => {
      const list = server.list
@@ -86,6 +88,7 @@ export const { use: useGlobal, provider: GlobalProvider } = createSimpleContext(
          },
        },
      },
+      models,
      ensureServerCtx(conn: ServerConnection.Any) {
        return ensureServerCtx(conn)
      },
@@ -93,6 +96,37 @@ export const { use: useGlobal, provider: GlobalProvider } = createSimpleContext(
  },
 })

+function createGlobalModels() {
+  const [store, setStore, _, ready] = persisted(
+    Persist.global("model"),
+    createStore<{
+      user: Array<{ providerID: string; modelID: string; visibility: "show" | "hide"; favorite?: boolean }>
+      recent: Array<{ providerID: string; modelID: string }>
+      variant?: Record<string, string | undefined>
+    }>({
+      user: [],
+      recent: [],
+      variant: {},
+    }),
+  )
+  const [recent] = createResource(
+    async () => {
+      const value = store.recent
+      await ready.promise
+      return value
+    },
+    (value) => value,
+    { initialValue: [] },
+  )
+
+  return {
+    store,
+    set: setStore,
+    ready,
+    recent: () => recent()!,
+  }
+}
+
 function createServerController(
  conn: ServerConnection.Any,
  scope: ServerScope,
@@ -36,10 +36,10 @@ export const loadLspQuery = (scope: ServerScope, directory: string) =>
    queryFn: async () => [],
  })

-function makeQueryOptionsApi(scope: ServerScope, serverAPI: ServerApi) {
+function makeQueryOptionsApi(scope: ServerScope, serverAPI: () => ServerApi) {
  return {
    globalConfig: () => loadGlobalConfigQuery(scope),
-    path: () => loadPathQuery(scope, null, serverAPI.location),
+    path: () => loadPathQuery(scope, null, serverAPI().location),
    lsp: (directory: PathKey) => loadLspQuery(scope, directory),
  }
 }
@@ -52,7 +52,7 @@ export function createServerSyncContextInner(serverSDK: ServerSDK, data: Data) {
  if (!owner) throw new Error("ServerSync must be created within owner")

  const booting = new Map<string, Promise<void>>()
-  const queryOptionsApi = makeQueryOptionsApi(serverSDK.scope, serverSDK.api)
+  const queryOptionsApi = makeQueryOptionsApi(serverSDK.scope, () => serverSDK.api)
  const connected = () => serverSDK.connection.status() === "connected"

  const [configQuery, pathQuery] = useQueries(() => ({
@@ -386,7 +386,7 @@
  padding: 48px 24px;
  font-size: 13px;
  font-weight: 440;
-  line-height: 1;
+  line-height: var(--line-height-compact);
  color: var(--v2-text-text-muted);
  text-align: center;
 }
@@ -16,6 +16,7 @@ export function createActiveComposerAdapter(input: {
  if (!id) throw new Error("Active Composer requires a Session ID")

  const prompt = useComposerState()
+  prompt.current()
  const state = prompt.capture()
  const data = useData()
  const server = useServerSDK()
@@ -101,6 +101,10 @@ export function createActiveSessionRegion(input: {
  const focus = () => {
    if (!input.session.data.isChild()) promptRef?.focus()
  }
+  const openParent = () => {
+    const id = input.session.data.parentID()
+    if (id) navigate(sessionHref(requireServerKey(input.session.identity.params.serverKey), id))
+  }
  const editable = (target: EventTarget | null | undefined) => {
    if (!(target instanceof HTMLElement)) return false
    return /^(INPUT|TEXTAREA|SELECT|BUTTON)$/.test(target.tagName) || target.isContentEditable
@@ -113,6 +117,7 @@ export function createActiveSessionRegion(input: {
    return current instanceof HTMLElement ? current : undefined
  }
  const handleKeyDown = (event: KeyboardEvent) => {
+    if (event.defaultPrevented) return
    const path = event.composedPath()
    const target = path.find((item): item is HTMLElement => item instanceof HTMLElement)
    const active = activeElement()
@@ -124,6 +129,11 @@ export function createActiveSessionRegion(input: {
    ) {
      return
    }
+    if (event.key === "Escape" && input.session.data.isChild()) {
+      event.preventDefault()
+      openParent()
+      return
+    }
    if (active === promptRef) {
      if (event.key === "Escape") promptRef?.blur()
      return
@@ -172,10 +182,7 @@ export function createActiveSessionRegion(input: {
    },
    region: {
      centered: input.screen.centered,
-      openParent: () => {
-        const id = input.session.data.parentID()
-        if (id) navigate(sessionHref(requireServerKey(input.session.identity.params.serverKey), id))
-      },
+      openParent,
      prompt,
      setDockRef: input.timeline.view.setDockRef,
      setPromptRef: (element: HTMLDivElement) => {
@@ -204,9 +211,7 @@ export function ActiveSessionComposerRegion(props: {
 }) {
  const region = createSessionComposerRegionController({
    state: props.model.region.state,
-    sessionKey: props.session.identity.sessionKey,
-    sessionID: () => props.session.identity.params.id,
-    prompt: props.model.region.prompt,
+    parentID: props.session.data.parentID,
    centered: props.model.region.centered,
    onResponseSubmit: props.onResponseSubmit,
    openParent: props.model.region.openParent,
@@ -1,47 +1,15 @@
-import { type Accessor, createEffect, createMemo, createResource } from "solid-js"
-import type { useComposerState } from "@/composer/persistence"
-import { useData } from "@/runtime/server/current"
-import { getSessionHandoff, setSessionHandoff } from "@/session/handoff"
+import type { Accessor } from "solid-js"
 import type { SessionRequestModel } from "../requests/model"

 export function createSessionComposerRegionController(input: {
  state: SessionRequestModel
-  sessionKey: Accessor<string>
-  sessionID: Accessor<string | undefined>
-  prompt: ReturnType<typeof useComposerState>
+  parentID: Accessor<string | undefined>
  centered: Accessor<boolean>
  onResponseSubmit: () => void
  openParent: () => void
  setPromptRef: (el: HTMLDivElement) => void
  setDockRef: (el: HTMLDivElement) => void
 }) {
-  const data = useData()
-  createEffect(() => {
-    if (!input.prompt.ready()) return
-    setSessionHandoff(input.sessionKey(), {
-      prompt: input.prompt
-        .current()
-        .map((part) => {
-          if (part.type === "file") return `[file:${part.path}]`
-          if (part.type === "agent") return `@${part.name}`
-          if (part.type === "image") return `[image:${part.filename}]`
-          return part.content
-        })
-        .join("")
-        .trim(),
-    })
-  })
-
-  const parentID = createMemo(() => {
-    const id = input.sessionID()
-    return id ? data.session.get(id)?.parentID : undefined
-  })
-  const ready = Promise.resolve()
-  const [promptReady] = createResource(
-    () => input.prompt.ready.promise ?? ready,
-    (promise) => promise.then(() => true),
-  )
-
  return {
    state: input.state,
    centered: input.centered,
@@ -49,11 +17,9 @@ export function createSessionComposerRegionController(input: {
    openParent: input.openParent,
    setPromptRef: input.setPromptRef,
    setDockRef: input.setDockRef,
-    parentID,
-    child: () => !!parentID(),
-    showComposer: () => !input.state.blocked() || !!parentID(),
-    handoffPrompt: () => getSessionHandoff(input.sessionKey())?.prompt,
-    promptReady: () => input.prompt.ready() || promptReady(),
+    parentID: input.parentID,
+    child: () => !!input.parentID(),
+    showComposer: () => !input.state.blocked() || !!input.parentID(),
  }
 }

@@ -19,8 +19,6 @@ export type SessionComposerRegionViewController = Pick<
  | "parentID"
  | "child"
  | "showComposer"
-  | "handoffPrompt"
-  | "promptReady"
 > & { state: SessionComposerRegionState }

 export function SessionComposerRegion(props: {
@@ -38,7 +36,7 @@ export function SessionComposerRegion(props: {
      <div
        classList={{
          "w-full px-3 pointer-events-auto": true,
-          "md:max-w-200 md:mx-auto 2xl:max-w-[1000px]": controller.centered(),
+          "md:max-w-[1000px] md:mx-auto": controller.centered(),
        }}
      >
        <Show when={controller.state.questionRequest()} keyed>
@@ -65,43 +63,32 @@ export function SessionComposerRegion(props: {
        </Show>

        <Show when={controller.showComposer()}>
-          <Show
-            when={controller.promptReady()}
-            fallback={
-              <>
-                <div class="w-full min-h-32 md:min-h-40 rounded-md border border-border-weak-base bg-background-base/50 px-4 py-3 text-text-weak whitespace-pre-wrap pointer-events-none">
-                  {controller.handoffPrompt() || language.t("prompt.loading")}
-                </div>
-              </>
-            }
+          <div
+            classList={{
+              "relative z-[70]": true,
+            }}
          >
-            <div
-              classList={{
-                "relative z-[70]": true,
-              }}
+            <Show
+              when={controller.child()}
+              fallback={<Show when={!controller.state.blocked()}>{props.composer}</Show>}
            >
-              <Show
-                when={controller.child()}
-                fallback={<Show when={!controller.state.blocked()}>{props.composer}</Show>}
+              <div
+                ref={controller.setPromptRef}
+                class="w-full rounded-[12px] border border-border-weak-base bg-background-base p-3 text-16-regular text-text-weak"
              >
-                <div
-                  ref={controller.setPromptRef}
-                  class="w-full rounded-[12px] border border-border-weak-base bg-background-base p-3 text-16-regular text-text-weak"
-                >
-                  <span>{language.t("session.child.promptDisabled")} </span>
-                  <Show when={controller.parentID()}>
-                    <button
-                      type="button"
-                      class="text-text-base transition-colors hover:text-text-strong"
-                      onClick={controller.openParent}
-                    >
-                      {language.t("session.child.backToParent")}
-                    </button>
-                  </Show>
-                </div>
-              </Show>
-            </div>
-          </Show>
+                <span>{language.t("session.child.promptDisabled")} </span>
+                <Show when={controller.parentID()}>
+                  <button
+                    type="button"
+                    class="text-text-base transition-colors hover:text-text-strong"
+                    onClick={controller.openParent}
+                  >
+                    {language.t("session.child.backToParent")}
+                  </button>
+                </Show>
+              </div>
+            </Show>
+          </div>
        </Show>
      </div>
    </div>
@@ -62,7 +62,7 @@ export function SessionSidePanel(props: {
  fileBrowserState: SessionFileBrowserState
  activeDiff?: string
  focusReviewDiff: (path: string) => void
-  reviewSnap: boolean
+  reviewPresent?: boolean
  size: Sizing
  stacked?: boolean
 }) {
@@ -79,6 +79,7 @@ export function SessionSidePanel(props: {
  const shown = settings.visibility.fileTree

  const reviewOpen = createMemo(() => isDesktop() && view().reviewPanel.opened())
+  const reviewVisible = createMemo(() => reviewOpen() || !!props.reviewPresent)
  const fileOpen = createMemo(
    () =>
      isDesktop() &&
@@ -88,11 +89,12 @@ export function SessionSidePanel(props: {
      }),
  )
  const open = createMemo(() => reviewOpen() || fileOpen())
+  const visible = createMemo(() => reviewVisible() || fileOpen())
  const fileTreeWidth = createMemo(() => Math.max(FILE_TREE_WIDTH_MIN, layout.fileTree.width()))
  const reviewTab = createMemo(() => isDesktop())
  const panelWidth = createMemo(() => {
-    if (!open()) return "0px"
-    if (reviewOpen()) return "auto"
+    if (!visible()) return "0px"
+    if (reviewVisible()) return "auto"
    return `${fileTreeWidth()}px`
  })
  const treeWidth = createMemo(() => (fileOpen() ? `${fileTreeWidth()}px` : "0px"))
@@ -252,14 +254,14 @@ export function SessionSidePanel(props: {
          "h-full min-h-0": props.stacked,
          "pointer-events-none": !open(),
          "transition-[width] duration-[240ms] ease-[cubic-bezier(0.22,1,0.36,1)] will-change-[width] motion-reduce:transition-none":
-            !props.size.active() && !props.reviewSnap,
-          "flex-1": reviewOpen(),
+            !props.size.active(),
+          "flex-1": reviewVisible(),
        }}
        style={{ width: panelWidth() }}
      >
-        <Show when={open()}>
+        <Show when={visible()}>
          <div class="size-full flex">
-            <Show when={reviewOpen()}>
+            <Show when={reviewVisible()}>
              <div class="relative min-w-0 h-full flex-1 overflow-hidden bg-v2-background-bg-base">
                <div class="size-full min-w-0 h-full bg-v2-background-bg-base">
                  <DragDropProvider
@@ -0,0 +1,18 @@
+import { expect, test } from "bun:test"
+import type { SessionMessageUser } from "@opencode-ai/client/promise"
+import { clearSessionMessageHandoff, getSessionMessageHandoff, setSessionMessageHandoff } from "./handoff"
+
+test("stores and clears a message handoff", () => {
+  const message = {
+    id: "msg_handoff",
+    type: "user",
+    text: "",
+    files: [{ data: "", mime: "image/png", source: { type: "uri", uri: "blob:image" } }],
+    time: { created: 1 },
+  } satisfies SessionMessageUser
+
+  setSessionMessageHandoff("session-key", message)
+  expect(getSessionMessageHandoff("session-key")).toEqual(message)
+  clearSessionMessageHandoff("session-key", message.id)
+  expect(getSessionMessageHandoff("session-key")).toBeUndefined()
+})
@@ -1,7 +1,8 @@
 import type { SelectedLineRange } from "@/workspaces/files/model"
+import type { SessionMessageUser } from "@opencode-ai/client/promise"
+import { createStore } from "solid-js/store"

 type HandoffSession = {
-  prompt: string
  files: Record<string, SelectedLineRange | null>
 }

@@ -11,6 +12,8 @@ const store = {
  session: new Map<string, HandoffSession>(),
  terminal: new Map<string, string[]>(),
 }
+const [messages, setMessages] = createStore<Record<string, SessionMessageUser | undefined>>({})
+const messageOrder = new Map<string, true>()

 const touch = <K, V>(map: Map<K, V>, key: K, value: V) => {
  map.delete(key)
@@ -23,12 +26,32 @@ const touch = <K, V>(map: Map<K, V>, key: K, value: V) => {
 }

 export const setSessionHandoff = (key: string, patch: Partial<HandoffSession>) => {
-  const prev = store.session.get(key) ?? { prompt: "", files: {} }
+  const prev = store.session.get(key) ?? { files: {} }
  touch(store.session, key, { ...prev, ...patch })
 }

 export const getSessionHandoff = (key: string) => store.session.get(key)

+export const setSessionMessageHandoff = (key: string, message: SessionMessageUser) => {
+  messageOrder.delete(key)
+  messageOrder.set(key, true)
+  setMessages(key, message)
+  while (messageOrder.size > MAX) {
+    const first = messageOrder.keys().next().value
+    if (first === undefined) return
+    messageOrder.delete(first)
+    setMessages(first, undefined)
+  }
+}
+
+export const getSessionMessageHandoff = (key: string) => messages[key]
+
+export const clearSessionMessageHandoff = (key: string, messageID: string) => {
+  if (messages[key]?.id !== messageID) return
+  messageOrder.delete(key)
+  setMessages(key, undefined)
+}
+
 export const setTerminalHandoff = (key: string, value: string[]) => {
  touch(store.terminal, key, value)
 }
@@ -101,11 +101,11 @@ export const focusTerminalById = (id: string) => {

  const textarea = terminal.querySelector("textarea")
  if (textarea instanceof HTMLTextAreaElement) {
-    textarea.focus()
+    textarea.focus({ preventScroll: true })
    return true
  }

-  terminal.focus()
+  terminal.focus({ preventScroll: true })
  terminal.dispatchEvent(
    typeof PointerEvent === "function"
      ? new PointerEvent("pointerdown", { bubbles: true, cancelable: true })
@@ -15,6 +15,8 @@ import {
 } from "./session-domain"
 import { useSessionLayout } from "./session-layout"
 import { createSessionOwnership } from "./session-ownership"
+import { useTabs } from "@/shell/tabs/tabs"
+import { useServer } from "@/runtime/server/current"

 const emptyMessages: SessionMessageInfo[] = []
 const emptyUserMessages: SessionMessageUser[] = []
@@ -23,6 +25,8 @@ const idle = { type: "idle" as const }
 export function useSessionModel() {
  const file = useFile()
  const data = useData()
+  const server = useServer()
+  const shellTabs = useTabs()
  const layout = useSessionLayout()
  const location = useWorkspaceLocation()
  const isDesktop = createMediaQuery("(min-width: 768px)")
@@ -31,7 +35,16 @@ export function useSessionModel() {
    const id = sessionID()
    return id ? data.session.get(id) : undefined
  })
-  const parentID = createMemo(() => info()?.parentID)
+  const parentID = createMemo(() => {
+    const current = info()?.parentID
+    if (current) return current
+    const id = sessionID()
+    if (!id) return
+    const tab = shellTabs.store.find(
+      (item) => item.type === "session" && item.server === server.key && item.routeSessionId === id,
+    )
+    return tab?.type === "session" ? (tab.routeParentId ?? tab.sessionId) : undefined
+  })
  const parent = createMemo(() => {
    const id = parentID()
    return id ? data.session.get(id) : undefined
@@ -124,11 +124,12 @@ export function createSessionReview(input: {
      queryKey: [server.scope, "session-details", input.session.workspace.directory()],
    })
  }, 100)
-  onCleanup(
-    location().event.listen((event) => {
+  createEffect(() => {
+    const stop = location().event.listen((event) => {
      if (event.type === "filesystem.changed") refresh()
-    }),
-  )
+    })
+    onCleanup(stop)
+  })
  createEffect(
    on(
      () => input.screen.review.open() || mobileChanges(),
@@ -58,7 +58,7 @@ export function SessionMobileReview(props: { review: SessionReviewModel }) {
  )
 }

-export function SessionDesktopReview(props: { review: SessionReviewModel }) {
+export function SessionDesktopReview(props: { review: SessionReviewModel; present?: boolean }) {
  return (
    <Suspense>
      <SessionSidePanel
@@ -79,7 +79,7 @@ export function SessionDesktopReview(props: { review: SessionReviewModel }) {
        fileBrowserState={props.review.panelState}
        activeDiff={props.review.activeFile()}
        focusReviewDiff={props.review.focusFile}
-        reviewSnap={props.review.screen.review.snap()}
+        reviewPresent={props.present}
        size={props.review.screen.size}
        stacked={props.review.screen.side.layout().stacked}
      />
@@ -2,12 +2,11 @@ import { ErrorBoundary, createEffect, createMemo, Show, type ParentProps } from
 import { useParams } from "@solidjs/router"
 import { CommentsProvider } from "@/composer/comments"
 import { FileProvider } from "@/workspaces/files/model"
-import { LocationProvider, useWorkspaceLocation } from "@/workspaces/location"
+import { LocationProvider } from "@/workspaces/location"
 import { ModelsProvider } from "@/providers/models/models"
 import { useNotification } from "@/shell/notifications/notification"
 import { ComposerPersistenceProvider } from "@/composer/persistence"
 import { useData, useServer } from "@/runtime/server/current"
-import { useServerSDK } from "@/runtime/server/client"
 import { ServerConnection } from "@/runtime/server/registry"
 import { TerminalProvider } from "@/session/terminal/context"
 import { useSettingsCommand } from "@/settings/command"
@@ -15,7 +14,8 @@ import { SessionUIProvider } from "@/shell/routes/session-ui-provider"
 import { useTabs } from "@/shell/tabs/tabs"
 import { requireServerKey } from "@/shell/routes/session"
 import { useSessionModel } from "./model"
-import { SessionPanelFrame, SessionRouteFrame } from "./session-frame"
+import { SessionPanelFrame } from "./session-frame"
+import { SessionIdentityHeader } from "./session-identity-header"
 import { IncompatibleServerPanel } from "./incompatible-server-panel"
 import { SessionErrorFallback } from "./route-error"
 import { createSessionResolution } from "./session-resolution"
@@ -31,7 +31,7 @@ export function TargetSessionRouteContent() {
      <MarkSessionNotificationsViewed sessionID={() => params.id} />
      <ModelsProvider directory={directory}>
        <TargetSessionSettingsCommand />
-        <SessionRouteErrorBoundary sessionID={params.id} serverKey={requireServerKey(params.serverKey)} padded>
+        <SessionRouteErrorBoundary sessionID={params.id} serverKey={requireServerKey(params.serverKey)}>
          <ResolvedTargetSessionRoute />
        </SessionRouteErrorBoundary>
      </ModelsProvider>
@@ -45,16 +45,14 @@ function TargetSessionSettingsCommand() {
 }

 function SessionRouteErrorBoundary(
-  props: ParentProps<{ sessionID?: string; serverKey?: ServerConnection.Key; padded?: boolean }>,
+  props: ParentProps<{ sessionID?: string; serverKey?: ServerConnection.Key }>,
 ) {
  return (
    <ErrorBoundary
      fallback={(error) => (
-        <SessionRouteFrame padded={props.padded}>
-          <SessionPanelFrame raised={!!props.sessionID}>
-            <SessionErrorFallback error={error} sessionID={props.sessionID} serverKey={props.serverKey} />
-          </SessionPanelFrame>
-        </SessionRouteFrame>
+        <SessionStatePanel>
+          <SessionErrorFallback error={error} sessionID={props.sessionID} serverKey={props.serverKey} />
+        </SessionStatePanel>
      )}
    >
      {props.children}
@@ -78,18 +76,16 @@ function ResolvedTargetSessionRoute() {
    <Show
      when={!server.health?.incompatible}
      fallback={
-        <SessionRouteFrame padded>
-          <SessionPanelFrame raised>
-            <IncompatibleServerPanel
-              onClose={() => tabs.removeSessionTab({ server: server.key, sessionId: params.id })}
-            />
-          </SessionPanelFrame>
-        </SessionRouteFrame>
+        <SessionStatePanel>
+          <IncompatibleServerPanel
+            onClose={() => tabs.removeSessionTab({ server: server.key, sessionId: params.id })}
+          />
+        </SessionStatePanel>
      }
    >
-      <Show when={directory()}>
+      <Show when={directory()} fallback={<PendingSessionState sessionID={params.id} />}>
        {(value) => (
-          <LocationProvider directory={value()}>
+          <LocationProvider directory={value}>
            <SessionUIProvider directory={value()} server={server.key}>
              <TargetSessionPage />
            </SessionUIProvider>
@@ -100,24 +96,35 @@ function ResolvedTargetSessionRoute() {
  )
 }

-function TargetSessionPage() {
-  const location = useWorkspaceLocation()
-  const server = useServerSDK()
-
+function PendingSessionState(props: { sessionID: string }) {
  return (
-    // Keep workspace-scoped file, prompt, comment, and terminal state alive when
-    // the user switches between Sessions in the same workspace.
-    <Show when={`${server.scope}\0${location().directory}`} keyed>
-      <TerminalProvider>
-        <FileProvider>
-          <ComposerPersistenceProvider>
-            <CommentsProvider>
-              <SessionPage />
-            </CommentsProvider>
-          </ComposerPersistenceProvider>
-        </FileProvider>
-      </TerminalProvider>
-    </Show>
+    <SessionStatePanel>
+      <SessionIdentityHeader sessionID={props.sessionID} />
+    </SessionStatePanel>
+  )
+}
+
+function SessionStatePanel(props: ParentProps) {
+  return (
+    <div class="flex min-h-0 flex-1 p-2">
+      <SessionPanelFrame raised>{props.children}</SessionPanelFrame>
+    </div>
+  )
+}
+
+function TargetSessionPage() {
+  return (
+    // These providers select their scoped state reactively and retain bounded caches,
+    // so keep their owners alive while navigating between workspaces on this server.
+    <TerminalProvider>
+      <FileProvider>
+        <ComposerPersistenceProvider>
+          <CommentsProvider>
+            <SessionPage />
+          </CommentsProvider>
+        </ComposerPersistenceProvider>
+      </FileProvider>
+    </TerminalProvider>
  )
 }

@@ -1,4 +1,5 @@
-import { createComputed, createMemo, createSignal, onCleanup } from "solid-js"
+import { createEffect, createMemo } from "solid-js"
+import { createStore } from "solid-js/store"
 import { createResizeObserver } from "@solid-primitives/resize-observer"
 import { useLayout } from "@/shell/state/layout"
 import { useSettings } from "@/settings/model"
@@ -14,11 +15,9 @@ export function createSessionScreenLayout(session: SessionModel, serverScope: st
  const reviewOpen = createMemo(() => session.isDesktop() && session.layout.view().reviewPanel.opened())
  const reviewPanelOpen = createMemo(() => reviewOpen() && !!session.identity.params.id)
  const terminalOpen = createMemo(() => session.layout.view().terminal.opened())
-  const desktopTerminalOpen = createMemo(() => session.isDesktop() && terminalOpen())
-  const sideTerminalOpen = createMemo(() => desktopTerminalOpen() && settings.general.terminalPlacement() === "side")
-  const bottomTerminalOpen = createMemo(
-    () => desktopTerminalOpen() && settings.general.terminalPlacement() === "bottom",
-  )
+  const sideTerminal = createMemo(() => session.isDesktop() && settings.general.terminalPlacement() === "side")
+  const bottomTerminal = createMemo(() => session.isDesktop() && settings.general.terminalPlacement() === "bottom")
+  const sideTerminalOpen = createMemo(() => terminalOpen() && sideTerminal())
  const fileTreeOpen = createMemo(
    () =>
      session.isDesktop() &&
@@ -29,14 +28,14 @@ export function createSessionScreenLayout(session: SessionModel, serverScope: st
  )
  const resizable = createMemo(() => reviewPanelOpen() || sideTerminalOpen())
  const sidePanelOpen = createMemo(() => resizable() || fileTreeOpen())
-  const [rowWidth, setRowWidth] = createSignal<number>()
+  const [rowSize, setRowSize] = createStore<{ width?: number; height?: number }>({})
  let row: HTMLDivElement | undefined
  createResizeObserver(
    () => row,
-    ({ width }) => setRowWidth(width),
+    ({ width, height }) => setRowSize({ width, height }),
  )
  const available = createMemo<number | undefined>(() => {
-    const width = rowWidth()
+    const width = rowSize.width
    if (width === undefined) return undefined
    return width - 8
  })
@@ -65,24 +64,30 @@ export function createSessionScreenLayout(session: SessionModel, serverScope: st
      files: fileTreeOpen(),
    }),
  )
-  const [reviewSnap, setReviewSnap] = createSignal(false)
-  let reviewFrame: number | undefined
-  createComputed((previous) => {
-    const open = reviewOpen()
-    if (previous === undefined || previous === open) return open
-
-    if (reviewFrame !== undefined) cancelAnimationFrame(reviewFrame)
-    setReviewSnap(true)
-    reviewFrame = requestAnimationFrame(() => {
-      reviewFrame = undefined
-      setReviewSnap(false)
-    })
-    return open
-  }, reviewOpen())
-  onCleanup(() => {
-    if (reviewFrame !== undefined) cancelAnimationFrame(reviewFrame)
+  const [motion, setMotion] = createStore({ gap: panelLayout().stacked, closing: false })
+  createEffect((previous) => {
+    const stacked = panelLayout().stacked
+    if (previous !== stacked) setMotion({ gap: stacked, closing: !stacked })
+    return stacked
+  }, panelLayout().stacked)
+  const sideRegionOpen = createMemo(() => reviewPanelOpen() || fileTreeOpen())
+  const terminalPane = createMemo(() =>
+    Math.min(layout.terminal.height(), typeof window === "undefined" ? 600 : window.innerHeight * 0.6),
+  )
+  const terminalPaneHeight = createMemo(() => `${terminalPane()}px`)
+  const sideHeight = createMemo(() => rowSize.height)
+  const fullSideHeight = createMemo(() => (sideHeight() === undefined ? "100%" : `${sideHeight()}px`))
+  const stackedReviewHeight = createMemo(() => {
+    const height = sideHeight()
+    if (height === undefined) return `calc(100% - ${terminalPaneHeight()} - 8px)`
+    return `${Math.max(0, height - terminalPane() - 8)}px`
  })
-
+  const sideContentWidth = createMemo<string>((previous) => {
+    const width = available()
+    if (resizable() && width !== undefined) return `${Math.max(0, width - resizedWidth())}px`
+    if (fileTreeOpen()) return `${layout.fileTree.width()}px`
+    return previous
+  }, "100%")
  return {
    centered: createMemo(() => session.isDesktop()),
    files: { open: fileTreeOpen },
@@ -99,14 +104,36 @@ export function createSessionScreenLayout(session: SessionModel, serverScope: st
    review: {
      open: reviewOpen,
      panelOpen: reviewPanelOpen,
-      snap: reviewSnap,
    },
-    side: { layout: panelLayout },
+    side: {
+      contentWidth: sideContentWidth,
+      gap: {
+        closing: () => motion.closing,
+        height: createMemo(() => (motion.gap ? "8px" : "0px")),
+      },
+      layout: panelLayout,
+      region: {
+        height: createMemo(() => {
+          if (!sideRegionOpen()) return "0px"
+          if (sideTerminalOpen()) return stackedReviewHeight()
+          return fullSideHeight()
+        }),
+        open: sideRegionOpen,
+      },
+      terminal: {
+        contentHeight: createMemo(() => (sideRegionOpen() ? terminalPaneHeight() : fullSideHeight())),
+        height: createMemo(() => {
+          if (!sideTerminalOpen()) return "0px"
+          if (sideRegionOpen()) return terminalPaneHeight()
+          return fullSideHeight()
+        }),
+      },
+    },
    size,
    terminal: {
-      bottomOpen: bottomTerminalOpen,
-      inlineOnlyOpen: createMemo(() => sideTerminalOpen() && !reviewPanelOpen()),
+      bottom: bottomTerminal,
      open: terminalOpen,
+      side: sideTerminal,
    },
  }
 }
@@ -1,5 +1,6 @@
 import { ErrorBoundary, Show, Match, Switch, createMemo, createEffect, createComputed, on } from "solid-js"
 import { createStore } from "solid-js/store"
+import createPresence from "solid-presence"
 import { ResizeHandle } from "@opencode-ai/ui/resize-handle"
 import { SessionHeader } from "@/session/header/session-header"
 import { useLayout } from "@/shell/state/layout"
@@ -8,7 +9,7 @@ import { useSettings } from "@/settings/model"
 import { MessageTimeline } from "@/session/timeline/message-timeline"
 import type { SessionModel } from "@/session/model"
 import { SESSION_PANEL_WIDTH_MIN } from "@/session/session-panel-width"
-import { SessionPanelFrame, SessionRouteFrame } from "@/session/session-frame"
+import { SessionPanelFrame } from "@/session/session-frame"
 import { TerminalPanel } from "@/session/terminal/panel"
 import { useUsageExceededDialogs } from "./usage-exceeded-dialogs"
 import { SessionErrorFallback } from "./route-error"
@@ -17,6 +18,7 @@ import { createSessionReview } from "./review/model"
 import { SessionDesktopReview, SessionMobileReview, SessionMobileTabs } from "./review/view"
 import { createSessionTimelineInteraction } from "./timeline/interaction"
 import { ActiveSessionComposerRegion, createActiveSessionRegion } from "./composer/region"
+import { SessionIdentityHeader } from "./session-identity-header"

 export function SessionScreen(props: { session: SessionModel }) {
  const session = props.session
@@ -27,7 +29,42 @@ export function SessionScreen(props: { session: SessionModel }) {
  const screen = createSessionScreenLayout(session, serverSDK.scope)
  const timeline = createSessionTimelineInteraction(session)
  const messagesReady = timeline.ready
-  const [store, setStore] = createStore({ deferRender: false })
+  const [store, setStore] = createStore({
+    deferRender: false,
+    bottomTerminalCached: false,
+    sideHeightMotion: false,
+    sideRegionPresent: false,
+    sideReviewPresent: false,
+    sideTerminalPresent: false,
+  })
+  const [elements, setElements] = createStore<{
+    side?: HTMLDivElement
+    bottomTerminal?: HTMLDivElement
+  }>({})
+  const sideVisible = createMemo(() => isDesktop() && screen.side.layout().visible)
+  const sideTerminalVisible = createMemo(() => isDesktop() && screen.terminal.side() && screen.terminal.open())
+  const bottomTerminalVisible = createMemo(() => screen.terminal.open() && (!isDesktop() || screen.terminal.bottom()))
+  const sidePresence = createPresence({
+    show: sideVisible,
+    element: () => elements.side ?? null,
+  })
+  const bottomTerminalPresence = createPresence({
+    show: bottomTerminalVisible,
+    element: () => elements.bottomTerminal ?? null,
+  })
+  createEffect(() => {
+    if (sideTerminalVisible()) setStore("sideTerminalPresent", true)
+    if (bottomTerminalVisible()) setStore("bottomTerminalCached", true)
+    if (!sideVisible()) setStore("sideHeightMotion", false)
+  })
+  createEffect(() => {
+    if (!isDesktop() || screen.terminal.bottom()) setStore("sideTerminalPresent", false)
+    if (isDesktop() && screen.terminal.side()) setStore("bottomTerminalCached", false)
+  })
+  createEffect(() => {
+    if (screen.side.region.open()) setStore("sideRegionPresent", true)
+    if (screen.review.panelOpen()) setStore("sideReviewPresent", true)
+  })

  createComputed((prev) => {
    const key = session.identity.sessionKey()
@@ -58,16 +95,24 @@ export function SessionScreen(props: { session: SessionModel }) {

  const sessionPanelContent = () => (
    <>
-      {timeline.resource() ?? ""}
      <Show when={!isDesktop() && !!session.identity.params.id && !mobileTabsBottom()}>
        <SessionMobileTabs review={review} compact />
      </Show>
+      {/* Surface query errors without suspending session metadata while messages load. */}
+      <Show when={timeline.resource.error}>
+        {(error) => {
+          throw error()
+        }}
+      </Show>
      <div class="flex-1 min-h-0 overflow-hidden">
        <Switch>
          <Match when={session.identity.params.id && review.mobile.changes()}>
            <SessionMobileReview review={review} />
          </Match>
          <Match when={session.identity.params.id}>
+            <Show when={!messagesReady()}>
+              <SessionIdentityHeader sessionID={session.identity.params.id ?? ""} session={session.data.info()} />
+            </Show>
            <Show when={messagesReady() ? session.identity.params.id : undefined} keyed>
              {(_id) => (
                <MessageTimeline
@@ -117,16 +162,17 @@ export function SessionScreen(props: { session: SessionModel }) {
  )

  return (
-    <SessionRouteFrame>
+    <>
      <SessionHeader />
      <div class="flex-1 min-h-0 flex flex-col gap-2 p-2">
-        <div ref={screen.panel.ref} class="flex-1 min-h-0 flex flex-col md:flex-row gap-2">
+        <div ref={screen.panel.ref} class="relative flex-1 min-h-0 flex flex-col md:flex-row gap-2">
          <div
            classList={{
-              "@container relative shrink-0 flex flex-col min-h-0 h-full flex-1 md:flex-none transition-[width]": true,
+              "@container relative z-10 shrink-0 flex flex-col min-h-0 h-full flex-1 md:flex-none transition-[width]": true,
              "duration-[240ms] ease-[cubic-bezier(0.22,1,0.36,1)] will-change-[width] motion-reduce:transition-none":
-                !screen.size.active() && !screen.review.snap() && !screen.terminal.inlineOnlyOpen(),
+                !screen.size.active(),
            }}
+            data-slot="session-chat-panel"
            style={{
              width: screen.panel.width(),
            }}
@@ -156,51 +202,125 @@ export function SessionScreen(props: { session: SessionModel }) {
            </Show>
          </div>

-          <Show when={isDesktop() && screen.side.layout().visible}>
-            <div class="min-w-0 h-full flex flex-1 flex-col">
-              <Show when={screen.review.panelOpen() || screen.files.open()}>
-                <div class="min-h-0 flex-1">
-                  <SessionDesktopReview review={review} />
-                </div>
-              </Show>
-              <Show when={screen.side.layout().stacked}>
-                <div class="relative h-2 shrink-0" onPointerDown={() => screen.size.start()}>
-                  <ResizeHandle
-                    class="!relative !inset-auto !h-full !w-full !transform-none"
-                    direction="vertical"
-                    size={layout.terminal.height()}
-                    min={100}
-                    max={typeof window === "undefined" ? 600 : window.innerHeight * 0.6}
-                    collapseThreshold={50}
-                    onResize={(height) => {
-                      screen.size.touch()
-                      layout.terminal.resize(height)
-                    }}
-                    onCollapse={() => session.layout.view().terminal.close()}
-                  />
-                </div>
-              </Show>
-              <Show when={screen.terminal.open() && !screen.terminal.bottomOpen()}>
+          <Show when={sidePresence.present() || store.sideTerminalPresent}>
+            <div
+              ref={(element) => setElements("side", element)}
+              data-slot="session-side-panel-presence"
+              data-opened={sideVisible()}
+              onAnimationEnd={(event) => {
+                if (event.currentTarget !== event.target) return
+                if (event.animationName !== "terminal-panel-presence-in" || !sideVisible()) return
+                setStore("sideHeightMotion", true)
+              }}
+              classList={{
+                "relative z-0 min-w-0 h-full flex-1 overflow-visible": sidePresence.present(),
+                "absolute inset-y-0 end-0 z-0 w-0 invisible pointer-events-none overflow-visible":
+                  !sidePresence.present(),
+              }}
+            >
+              <div
+                data-slot="session-side-panel-content"
+                class="absolute inset-y-0 start-0 h-full"
+                style={{ width: screen.side.contentWidth() }}
+              >
                <div
+                  data-slot="session-side-region"
                  classList={{
-                    "min-h-0 shrink-0": screen.side.layout().stacked,
-                    "min-h-0 flex-1": !screen.side.layout().stacked,
+                    "absolute inset-x-0 top-0 min-h-0 overflow-visible transition-[height] duration-[240ms] ease-[cubic-bezier(0.22,1,0.36,1)] motion-reduce:transition-none": true,
+                    "will-change-[height]": !screen.size.active() && store.sideHeightMotion,
+                    "transition-none": screen.size.active() || !store.sideHeightMotion,
                  }}
+                  style={{ height: screen.side.region.height() }}
                >
-                  <TerminalPanel stacked={screen.side.layout().stacked} />
+                  <Show when={store.sideRegionPresent}>
+                    <div
+                      data-slot="session-side-region-presence"
+                      data-opened={screen.side.region.open()}
+                      class="absolute inset-0"
+                      onAnimationEnd={(event) => {
+                        if (event.currentTarget !== event.target) return
+                        if (event.animationName !== "side-region-presence-out") return
+                        if (screen.side.region.open()) return
+                        if (sideTerminalVisible()) return
+                        setStore("sideRegionPresent", false)
+                        setStore("sideReviewPresent", false)
+                      }}
+                    >
+                      <SessionDesktopReview review={review} present={store.sideReviewPresent} />
+                    </div>
+                  </Show>
                </div>
-              </Show>
+                <div class="absolute inset-x-0 bottom-0 flex flex-col">
+                  <div
+                    data-slot="session-side-panel-gap"
+                    classList={{
+                      "relative z-0 shrink-0 overflow-visible bg-v2-background-bg-deep transition-[height] duration-[40ms] ease-[cubic-bezier(0.22,1,0.36,1)] motion-reduce:transition-none": true,
+                      "delay-0": !screen.side.gap.closing(),
+                      "delay-[200ms]": screen.side.gap.closing(),
+                    }}
+                    style={{ height: screen.side.gap.height() }}
+                    onPointerDown={() => screen.size.start()}
+                  >
+                    <Show when={screen.side.layout().stacked}>
+                      <ResizeHandle
+                        class="!relative !inset-auto !h-full !w-full !transform-none"
+                        direction="vertical"
+                        size={layout.terminal.height()}
+                        min={100}
+                        max={typeof window === "undefined" ? 600 : window.innerHeight * 0.6}
+                        collapseThreshold={50}
+                        onResize={(height) => {
+                          screen.size.touch()
+                          layout.terminal.resize(height)
+                        }}
+                        onCollapse={() => session.layout.view().terminal.close()}
+                      />
+                    </Show>
+                  </div>
+                  <div
+                    data-slot="session-side-terminal-region"
+                    classList={{
+                      "relative z-10 min-h-0 shrink-0 overflow-visible transition-[height] duration-[240ms] ease-[cubic-bezier(0.22,1,0.36,1)] motion-reduce:transition-none": true,
+                      "will-change-[height]": !screen.size.active() && store.sideHeightMotion,
+                      "transition-none": screen.size.active() || !store.sideHeightMotion,
+                    }}
+                    style={{ height: screen.side.terminal.height() }}
+                  >
+                    <Show when={store.sideTerminalPresent}>
+                      <div
+                        data-slot="side-terminal-panel-presence"
+                        data-opened={sideTerminalVisible()}
+                        class="absolute inset-0 rounded-[10px] bg-v2-background-bg-base shadow-[var(--v2-elevation-raised)]"
+                      >
+                        <div data-slot="side-terminal-panel-clip" class="size-full overflow-clip rounded-[10px]">
+                          <TerminalPanel
+                            fill
+                            framed={false}
+                            present={store.sideTerminalPresent}
+                            contentHeight={screen.side.terminal.contentHeight()}
+                          />
+                        </div>
+                      </div>
+                    </Show>
+                  </div>
+                </div>
+              </div>
            </div>
          </Show>
        </div>

-        <Show when={screen.terminal.open() && (!isDesktop() || screen.terminal.bottomOpen())}>
-          <div classList={{ "relative min-h-0 shrink-0": isDesktop() }}>
+        <Show when={bottomTerminalPresence.present() || store.bottomTerminalCached}>
+          <div
+            ref={(element) => setElements("bottomTerminal", element)}
+            data-slot="terminal-panel-presence"
+            data-opened={bottomTerminalVisible()}
+            classList={{
+              hidden: !bottomTerminalPresence.present(),
+              "relative min-h-0 shrink-0": isDesktop(),
+            }}
+          >
            <Show when={isDesktop()}>
-              <div
-                class="absolute z-10 -top-1 left-0 right-0 h-2"
-                onPointerDown={() => screen.size.start()}
-              >
+              <div class="absolute z-10 -top-1 left-0 right-0 h-2" onPointerDown={() => screen.size.start()}>
                <ResizeHandle
                  class="!relative !inset-auto !h-full !w-full !transform-none"
                  direction="vertical"
@@ -216,10 +336,10 @@ export function SessionScreen(props: { session: SessionModel }) {
                />
              </div>
            </Show>
-            <TerminalPanel stacked={isDesktop()} />
+            <TerminalPanel stacked={isDesktop()} present={store.bottomTerminalCached} />
          </div>
        </Show>
      </div>
-    </SessionRouteFrame>
+    </>
  )
 }
@@ -0,0 +1,3 @@
+export function looksLikeSessionID(value: string) {
+  return value.length > 20 && value.startsWith("ses_")
+}
@@ -0,0 +1,145 @@
+import type { SessionInfo } from "@opencode-ai/client/promise"
+import { Icon } from "@opencode-ai/ui/icon"
+import { ProjectAvatar } from "@opencode-ai/ui/project-avatar"
+import { useNavigate } from "@solidjs/router"
+import { createMemo, Show, type ParentProps } from "solid-js"
+import { useServer } from "@/runtime/server/current"
+import { displayName, getProjectAvatarSource, projectForSession } from "@/shell/layout/helpers"
+import { getProjectAvatarVariant } from "@/shell/state/layout"
+import { tabKey, useTabs } from "@/shell/tabs/tabs"
+import { useSettings } from "@/settings/model"
+import { pathKey } from "@/workspaces/path-key"
+import { isWorkspaceDirectory } from "@/workspaces/paths"
+import { sessionHref } from "@/shell/routes/session"
+import { sessionTitle } from "./title"
+
+export function SessionTitleHeader(props: ParentProps) {
+  return (
+    <div
+      data-session-title
+      class="sticky top-0 z-30 w-full bg-[linear-gradient(to_bottom,var(--v2-background-bg-base)_48px,transparent)] pb-4 pe-3 ps-2.5"
+    >
+      {props.children}
+    </div>
+  )
+}
+
+export function SessionIdentityHeader(props: { sessionID: string; session?: SessionInfo }) {
+  const server = useServer()
+  const tabs = useTabs()
+  const settings = useSettings()
+  const navigate = useNavigate()
+  const tab = createMemo(() =>
+    tabs.store.find(
+      (item) =>
+        item.type === "session" &&
+        item.server === server.key &&
+        (item.sessionId === props.sessionID || item.routeSessionId === props.sessionID),
+    ),
+  )
+  const info = createMemo(() => {
+    const current = tab()
+    return current ? tabs.info[tabKey(current)] : undefined
+  })
+  const parentID = createMemo(() => {
+    if (props.session?.parentID) return props.session.parentID
+    const current = tab()
+    if (current?.type !== "session" || current.routeSessionId !== props.sessionID) return
+    return current.routeParentId ?? current.sessionId
+  })
+  const parent = createMemo(() => {
+    const id = parentID()
+    return id ? server.ctx.data.session.get(id) : undefined
+  })
+  const parentTitle = createMemo(() => {
+    const id = parentID()
+    const current = tab()
+    return sessionTitle(parent()?.title ?? (current?.type === "session" && current.sessionId === id ? info()?.title : undefined))
+  })
+  const directory = createMemo(() => props.session?.location.directory ?? info()?.directory)
+  const title = createMemo(() => sessionTitle(props.session?.title ?? (parentID() ? undefined : info()?.title)))
+  const project = createMemo(() => {
+    const projects = server.ctx.projects.list()
+    if (props.session) return projectForSession(props.session, projects)
+    const value = directory()
+    if (!value) return undefined
+    const key = pathKey(value)
+    return projects.find(
+      (item) => pathKey(item.worktree) === key || item.sandboxes?.some((sandbox) => pathKey(sandbox) === key),
+    )
+  })
+  const showProjectIcon = () =>
+    import.meta.env.VITE_OPENCODE_CHANNEL !== "prod" && settings.general.showProjectIcon() && !!directory()
+  const workspaceSession = createMemo(() => isWorkspaceDirectory(project(), directory() ?? ""))
+  const navigateParent = () => {
+    const id = parentID()
+    const current = tab()
+    if (!id || current?.type !== "session") return
+    tabs.rememberSessionRoute(current, id, parent()?.parentID)
+    navigate(sessionHref(server.key, id))
+  }
+
+  return (
+    <Show when={title() || parentTitle() || showProjectIcon()}>
+      <SessionTitleHeader>
+        <div class="flex h-12 w-full items-center justify-between gap-2">
+          <div class="flex min-w-0 flex-1 items-center gap-1">
+            <div class="flex min-w-0 w-full flex-1 items-center">
+              <span
+                classList={{
+                  "flex size-6 shrink-0 items-center justify-center": true,
+                  "text-v2-icon-icon-accent": workspaceSession() && !showProjectIcon(),
+                  "text-v2-icon-icon-muted": !workspaceSession() && !showProjectIcon(),
+                }}
+              >
+                <Show
+                  when={showProjectIcon()}
+                  fallback={<Icon name={workspaceSession() ? "workspace-isolated" : "monitor"} />}
+                >
+                  <ProjectAvatar
+                    fallback={displayName(project() ?? { worktree: directory() ?? "" })}
+                    src={getProjectAvatarSource(project()?.id, project()?.icon)}
+                    variant={getProjectAvatarVariant(project()?.icon?.color)}
+                  />
+                </Show>
+              </span>
+              <Show when={parentTitle()}>
+                {(value) => (
+                  <button
+                    type="button"
+                    data-slot="session-title-parent"
+                    dir="auto"
+                    class="min-w-0 max-w-[40%] truncate pl-2 text-[13px] font-[530] leading-4 tracking-[-0.04px] text-v2-text-text-faint transition-colors hover:text-v2-text-text-muted"
+                    onClick={navigateParent}
+                  >
+                    {value()}
+                  </button>
+                )}
+              </Show>
+              <Show when={parentTitle() && title()}>
+                <span
+                  data-slot="session-title-separator"
+                  class="-translate-y-[0.5px] pl-2 pr-1 text-[11px] font-medium text-v2-text-text-faint"
+                  aria-hidden="true"
+                >
+                  /
+                </span>
+              </Show>
+              <Show when={title()}>
+                {(value) => (
+                  <h1
+                    data-slot={parentID() ? "session-title-child" : undefined}
+                    dir="auto"
+                    class="w-fit truncate rounded-[6px] px-2 py-1 text-[13px] font-[530] leading-4 tracking-[-0.04px] text-v2-text-text-base"
+                  >
+                    {value()}
+                  </h1>
+                )}
+              </Show>
+            </div>
+          </div>
+        </div>
+      </SessionTitleHeader>
+    </Show>
+  )
+}
@@ -208,8 +208,6 @@ function SessionSurfaceState(props: SessionPreviewProps & { onReset: () => void
    parentID: () => props.child?.parentID,
    child: () => !!props.child,
    showComposer: () => true,
-    handoffPrompt: () => undefined,
-    promptReady: () => true,
  } satisfies SessionComposerRegionViewController

  return (
@@ -18,7 +18,7 @@ import { Terminal } from "@/session/terminal/terminal"
 import { useCommand } from "@/shell/commands/command"
 import { useLanguage } from "@/runtime/i18n/language"
 import { useLayout } from "@/shell/state/layout"
-import { useTerminal } from "@/session/terminal/context"
+import { useTerminal, type LocalPTY } from "@/session/terminal/context"
 import { useWorkspaceLocation } from "@/workspaces/location"
 import { terminalTabLabel } from "@/session/terminal/terminal-label"
 import { createSizing, focusTerminalById } from "@/session/helpers"
@@ -26,7 +26,20 @@ import { getTerminalHandoff, setTerminalHandoff } from "@/session/handoff"
 import { useSessionLayout } from "@/session/session-layout"
 import { TerminalSurface } from "./surface"

-export function TerminalPanel(props: { stacked?: boolean } = {}) {
+const MAX_CACHED_TERMINAL_WORKSPACES = 20
+
+type TerminalBinding = ReturnType<ReturnType<typeof useTerminal>["bind"]>
+type CachedTerminalSurface = {
+  key: string
+  workspace: string
+  pty: LocalPTY
+  ops: TerminalBinding
+  focus: boolean
+}
+
+export function TerminalPanel(
+  props: { stacked?: boolean; fill?: boolean; framed?: boolean; present?: boolean; contentHeight?: string } = {},
+) {
  const layout = useLayout()
  const terminal = useTerminal()
  const sdk = useWorkspaceLocation()
@@ -45,18 +58,26 @@ export function TerminalPanel(props: { stacked?: boolean } = {}) {
  onCleanup(() => terminal.cancelFocus())

  const [store, setStore] = createStore({
-    autoCreated: false,
+    autoCreated: undefined as string | undefined,
    recovered: {} as Record<string, boolean>,
+    surfaces: [] as CachedTerminalSurface[],
+    workspaces: [] as string[],
    view: typeof window === "undefined" ? 1000 : (window.visualViewport?.height ?? window.innerHeight),
  })

  const max = () => store.view * 0.6
  const pane = () => Math.min(height(), max())
  const stacked = createMemo(() => isDesktop() && !!props.stacked)
-  const panelHeight = createMemo(() =>
-    isDesktop() ? (stacked() ? `${pane()}px` : "100%") : opened() ? `${pane()}px` : "0px",
+  const panelHeight = createMemo(() => {
+    if (props.fill) return "100%"
+    if (!opened()) return "0px"
+    if (isDesktop()) return stacked() ? `${pane()}px` : "100%"
+    return `${pane()}px`
+  })
+  const contentHeight = createMemo(
+    () => props.contentHeight ?? (isDesktop() ? (stacked() ? `${pane()}px` : "100%") : `${pane()}px`),
  )
-  const contentHeight = createMemo(() => (isDesktop() ? (stacked() ? `${pane()}px` : "100%") : `${pane()}px`))
+  const present = createMemo(() => opened() || !!props.present)
  const newTerminalKeybind = createMemo(() => command.keybindParts("terminal.new"))

  onMount(() => {
@@ -68,24 +89,29 @@ export function TerminalPanel(props: { stacked?: boolean } = {}) {
    sync()
    makeEventListener(window, "resize", sync)
    if (port) makeEventListener(port, "resize", sync)
+    makeEventListener(document, "focusin", (event) => {
+      if (event.target instanceof Element && event.target.closest("#terminal-panel")) return
+      setStore("surfaces", (surface) => surface.focus, "focus", false)
+    })
  })

  createEffect(() => {
    if (!opened()) {
-      setStore("autoCreated", false)
+      setStore("autoCreated", undefined)
      return
    }

-    if (!terminal.ready() || terminal.all().length !== 0 || store.autoCreated) return
+    const workspace = workspaceKey()
+    if (!terminal.ready() || terminal.all().length !== 0 || store.autoCreated === workspace) return
    terminal.new()
-    setStore("autoCreated", true)
+    setStore("autoCreated", workspace)
  })

  createEffect(
    on(
-      () => terminal.all().length,
-      (count, prevCount) => {
-        if (prevCount === undefined || prevCount <= 0 || count !== 0) return
+      () => [workspaceKey(), terminal.all().length] as const,
+      ([workspace, count], previous) => {
+        if (!previous || previous[0] !== workspace || previous[1] <= 0 || count !== 0) return
        if (!opened()) return
        close()
      },
@@ -97,7 +123,10 @@ export function TerminalPanel(props: { stacked?: boolean } = {}) {
      () => [opened(), terminal.active(), terminal.focusRequested(terminal.active())] as const,
      ([next, id, requested]) => {
        if (!next || !id || !requested) return
-        focusTerminalById(id)
+        requestAnimationFrame(() => {
+          if (!opened() || terminal.active() !== id || !terminal.focusRequested(id)) return
+          focusTerminalById(id)
+        })
      },
    ),
  )
@@ -136,19 +165,44 @@ export function TerminalPanel(props: { stacked?: boolean } = {}) {

  const all = terminal.all

+  createEffect(
+    on(
+      () => [workspaceKey(), terminal.ready(), terminal.active(), terminal.all()] as const,
+      ([workspace, ready, active, ptys]) => {
+        if (!ready) return
+
+        const ids = new Set(ptys.map((pty) => pty.id))
+        const surfaces = store.surfaces.filter((surface) => surface.workspace !== workspace || ids.has(surface.pty.id))
+        const pty = ptys.find((item) => item.id === active)
+        const key = pty ? `${workspace}\0${pty.id}` : undefined
+        if (pty && key && !surfaces.some((surface) => surface.key === key)) {
+          surfaces.push({ key, workspace, pty, ops: terminal.bind(), focus: terminal.focusRequested(pty.id) })
+        }
+
+        const workspaces = [...store.workspaces.filter((item) => item !== workspace), workspace].slice(
+          -MAX_CACHED_TERMINAL_WORKSPACES,
+        )
+        const keep = new Set(workspaces)
+        setStore({ surfaces: surfaces.filter((surface) => keep.has(surface.workspace)), workspaces })
+      },
+    ),
+  )
+
  const recoverTerminal = (key: string, id: string, clone: (id: string) => Promise<void>) => {
    if (store.recovered[key]) return
    setStore("recovered", key, true)
    void clone(id)
  }

-  const terminalRecoveryKey = (pty: { id: string; title: string; titleNumber: number }) => {
-    return String(pty.titleNumber || pty.title || pty.id)
-  }
-
  const markTerminalConnected = (key: string, id: string, trim: (id: string) => void) => {
    setStore("recovered", key, false)
    trim(id)
+    const index = store.surfaces.findIndex((surface) => surface.key === key)
+    if (!store.surfaces[index]?.focus) return
+    setStore("surfaces", index, "focus", false)
+    if (!opened() || terminal.active() !== id) return
+    focusTerminalById(id)
+    terminal.consumeFocus(id)
  }

  const handleTerminalDragEnd = () => {
@@ -167,6 +221,8 @@ export function TerminalPanel(props: { stacked?: boolean } = {}) {
      }}
      label={language.t("terminal.title")}
      opened={opened()}
+      present={present()}
+      framed={props.framed}
      desktop={isDesktop()}
      stacked={stacked()}
      height={panelHeight()}
@@ -182,7 +238,7 @@ export function TerminalPanel(props: { stacked?: boolean } = {}) {
      onCollapse={close}
    >
      <Show
-        when={terminal.ready()}
+        when={terminal.ready() || store.surfaces.length > 0}
        fallback={
          <div class="flex flex-col h-full pointer-events-none">
            <div class="h-10 flex items-center gap-2 px-2 border-b border-border-weaker-base bg-v2-background-bg-base overflow-hidden">
@@ -268,34 +324,35 @@ export function TerminalPanel(props: { stacked?: boolean } = {}) {
              </Tabs.List>
            </Tabs>
            <div class="flex-1 min-h-0 relative">
-              <Show when={opened() && terminal.active()} keyed>
-                {(id) => {
-                  const ops = terminal.bind()
-                  return (
-                    <Show when={all().find((pty) => pty.id === id)}>
-                      {(pty) => (
-                        <div id={`terminal-wrapper-${id}`} class="absolute inset-0">
-                          <Terminal
-                            pty={pty()}
-                            autoFocus={terminal.focusRequested(id)}
-                            onAutoFocus={() => terminal.consumeFocus(id)}
-                            class="!px-[14px]"
-                            onConnect={() =>
-                              markTerminalConnected(terminalRecoveryKey(pty()), id, (terminalID) =>
-                                ops.trim(terminalID),
-                              )
-                            }
-                            onCleanup={(terminal) => ops.update(terminal)}
-                            onConnectError={() =>
-                              recoverTerminal(terminalRecoveryKey(pty()), id, (terminalID) => ops.clone(terminalID))
-                            }
-                          />
-                        </div>
-                      )}
-                    </Show>
-                  )
-                }}
-              </Show>
+              <For each={store.surfaces}>
+                {(surface) => (
+                  <div
+                    id={`terminal-wrapper-${surface.pty.id}`}
+                    class="absolute inset-0"
+                    classList={{
+                      hidden:
+                        !present() || surface.workspace !== workspaceKey() || surface.pty.id !== terminal.active(),
+                    }}
+                  >
+                    <Terminal
+                      pty={surface.pty}
+                      autoFocus={terminal.focusRequested(surface.pty.id)}
+                      onAutoFocus={() => {
+                        focusTerminalById(surface.pty.id)
+                        terminal.consumeFocus(surface.pty.id)
+                      }}
+                      class="!px-[14px]"
+                      onConnect={() =>
+                        markTerminalConnected(surface.key, surface.pty.id, (terminalID) => surface.ops.trim(terminalID))
+                      }
+                      onCleanup={(terminal) => surface.ops.update(terminal)}
+                      onConnectError={() =>
+                        recoverTerminal(surface.key, surface.pty.id, (terminalID) => surface.ops.clone(terminalID))
+                      }
+                    />
+                  </div>
+                )}
+              </For>
            </div>
          </div>
        </DragDropProvider>
@@ -5,6 +5,8 @@ export function TerminalSurface(
  props: ParentProps<{
    label: string
    opened: boolean
+    present?: boolean
+    framed?: boolean
    desktop: boolean
    stacked: boolean
    height: string
@@ -22,6 +24,9 @@ export function TerminalSurface(
    <aside
      ref={props.ref}
      id="terminal-panel"
+      data-component="terminal-panel"
+      data-opened={props.opened}
+      data-size-animated={!props.resizing && (!props.desktop || props.stacked)}
      role="region"
      aria-label={props.label}
      aria-hidden={!props.opened}
@@ -29,13 +34,12 @@ export function TerminalSurface(
      class="relative shrink-0 overflow-hidden bg-v2-background-bg-base"
      classList={{
        "w-full": !props.desktop || props.stacked,
-        "min-w-0 h-full flex-1": props.desktop && props.opened && !props.stacked,
-        "w-0 h-full pointer-events-none": props.desktop && !props.opened,
-        "rounded-[10px] shadow-[var(--v2-elevation-raised)]": props.desktop,
-        "transition-[height] duration-200 ease-[cubic-bezier(0.22,1,0.36,1)] will-change-[height] motion-reduce:transition-none":
-          !props.desktop && !props.resizing,
+        "min-w-0 h-full flex-1": props.desktop && (props.present ?? props.opened) && !props.stacked,
+        "w-0 h-full pointer-events-none": props.desktop && !(props.present ?? props.opened),
+        "rounded-[10px] shadow-[var(--v2-elevation-raised)]": props.desktop && (props.framed ?? true),
+        "will-change-[height]": !props.resizing && (!props.desktop || props.stacked),
      }}
-      style={{ height: props.height }}
+      style={{ height: props.height, "--terminal-panel-height": props.contentHeight }}
    >
      <div classList={{ "md:hidden": !props.stacked, hidden: props.stacked }} onPointerDown={props.onResizeStart}>
        <ResizeHandle
@@ -50,7 +54,8 @@ export function TerminalSurface(
        />
      </div>
      <div
-        class="absolute inset-0 flex flex-col overflow-hidden"
+        data-slot="terminal-panel-content"
+        class="absolute inset-x-0 top-0 flex flex-col overflow-hidden"
        classList={{
          "border-t border-border-weak-base": props.opened && !props.desktop,
          "pointer-events-none": !props.opened,
@@ -221,6 +221,14 @@ export const Terminal = (props: TerminalProps) => {
  let drop: VoidFunction | undefined
  let reconn: ReturnType<typeof setTimeout> | undefined
  let tries = 0
+  let revealed = false
+
+  const reveal = () => {
+    if (revealed) return
+    if (!serializeAddon.serializeAsText({ trimWhitespace: true })) return
+    revealed = true
+    container.style.opacity = "1"
+  }

  const cleanup = () => {
    if (!cleanups.length) return
@@ -339,9 +347,9 @@ export const Terminal = (props: TerminalProps) => {
  const focusTerminal = () => {
    const t = term
    if (!t) return
-    t.focus()
-    t.textarea?.focus()
-    setTimeout(() => t.textarea?.focus(), 0)
+    const focus = () => (t.textarea ? t.textarea.focus({ preventScroll: true }) : t.focus())
+    focus()
+    setTimeout(focus, 0)
  }
  const handlePointerDown = () => {
    const activeElement = document.activeElement
@@ -500,6 +508,7 @@ export const Terminal = (props: TerminalProps) => {

      if (restore && restoreSize) {
        await write(restore)
+        reveal()
        fit.fit()
        scheduleSize(t.cols, t.rows)
        if (scrollY !== undefined) t.scrollToLine(scrollY)
@@ -509,6 +518,7 @@ export const Terminal = (props: TerminalProps) => {
        scheduleSize(t.cols, t.rows)
        if (restore) {
          await write(restore)
+          reveal()
          if (scrollY !== undefined) t.scrollToLine(scrollY)
        }
        startResize()
@@ -605,6 +615,7 @@ export const Terminal = (props: TerminalProps) => {
          const data = typeof event.data === "string" ? event.data : ""
          if (!data) return
          output?.push(data)
+          if (!revealed) output?.flush(reveal)
          cursor += data.length
          seek = cursor
        }
@@ -685,7 +696,7 @@ export const Terminal = (props: TerminalProps) => {
      dir="ltr"
      data-prevent-autofocus
      tabIndex={-1}
-      style={{ "background-color": terminalColors().background }}
+      style={{ "background-color": terminalColors().background, "caret-color": "transparent", opacity: 0 }}
      classList={{
        ...local.classList,
        "select-text": true,
@@ -1,6 +1,6 @@
 import { describe, expect, test } from "bun:test"
 import type { SessionInboxInfo, SessionMessageInfo } from "@opencode-ai/client/promise"
-import { visibleTimelineMessages } from "./controller-projection"
+import { applyTimelineMessageHandoff, visibleTimelineMessages } from "./controller-projection"

 const messages = [
  { id: "msg_1", type: "user", text: "first", time: { created: 1 } },
@@ -41,3 +41,37 @@ describe("visibleTimelineMessages", () => {
    expect(visibleTimelineMessages(messages, [], "msg_0")).toEqual([])
  })
 })
+
+describe("applyTimelineMessageHandoff", () => {
+  const handoff = {
+    id: "msg_image",
+    type: "user",
+    text: "",
+    files: [
+      {
+        data: "",
+        mime: "image/png",
+        source: { type: "uri", uri: "blob:image" },
+        name: "image.png",
+      },
+    ],
+    time: { created: 1 },
+  } satisfies SessionMessageInfo
+
+  test("shows a promoted image-only prompt before client admission", () => {
+    expect(applyTimelineMessageHandoff([], handoff)).toEqual([handoff])
+  })
+
+  test("adds attachments to the client's optimistic row", () => {
+    const optimistic = { id: handoff.id, type: "user", text: "", time: { created: 2 } } satisfies SessionMessageInfo
+    expect(applyTimelineMessageHandoff([optimistic], handoff)).toEqual([{ ...optimistic, files: handoff.files }])
+  })
+
+  test("keeps the durable attachment payload", () => {
+    const durable = {
+      ...handoff,
+      files: [{ data: "YQ==", mime: "image/png", source: { type: "inline" } }],
+    } satisfies SessionMessageInfo
+    expect(applyTimelineMessageHandoff([durable], handoff)).toEqual([durable])
+  })
+})
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
opencode-agent[bot]	6e59da0af5	chore: update nix node_modules hashes	2026-08-24 00:16:26 +00:00
Kit Langton	e867a21ea5	feat(core): decouple workspace identity from provisioning (#44526 )	2026-08-23 23:49:51 +00:00
Luke Parker	64c0411edb	fix(session-ui): align tool error card with figma (#44543 )	2026-08-23 23:31:45 +00:00
opencode-agent[bot]andrekram1-node	7da10aa65d	fix(ai): retry detail-free response errors (#44537 ) Co-authored-by: rekram1-node <rekram1-node@users.noreply.github.com>	2026-08-23 17:39:55 -05:00
Luke Parker	d80b0a1e7e	fix(desktop): reconnect to elected service (#44369 )	2026-08-24 08:27:04 +10:00
opencode-agent[bot]	481125f617	chore: update nix node_modules hashes	2026-08-23 22:15:43 +00:00
Kit Langton	59d0d64a6b	chore: upgrade Effect to rc.111 (#44518 )	2026-08-23 18:01:44 -04:00
opencode-agent[bot]andthdxr	e0cdf1ed09	fix(tui): restore global prompt history (#44416 ) Co-authored-by: thdxr <thdxr@users.noreply.github.com>	2026-08-23 17:53:16 -04:00
Kit Langton	9e50d76416	fix(codegen): write prettier-stable schema snapshot (#43985 )	2026-08-23 17:34:47 -04:00
Dax	771c0f5850	fix(core): avoid stale MCP OAuth snapshots destroying rotated credentials (#44527 )	2026-08-23 17:02:51 -04:00
Kit Langton	b1a0ef91bb	refactor(core): use FiberMap for title generation (#44519 )	2026-08-23 16:22:43 -04:00
Kit Langton	2e67cee75b	fix(tui): recover from terminal forms (#44516 )	2026-08-23 16:21:28 -04:00
opencode-agent[bot]andrekram1-node	890735c1d7	feat(plugin): expose tool input schema (#44510 ) Co-authored-by: rekram1-node <rekram1-node@users.noreply.github.com>	2026-08-23 14:19:57 -05:00
Aiden Cline	049f0b0c3b	fix(ai): handle additional usage locations and tool history for OpenAI Chat (#44502 )	2026-08-23 13:48:30 -05:00
Aiden Cline	6020f36862	fix(ai): handle anthropic error events and ping frames (#44500 )	2026-08-23 13:45:21 -05:00
Simon Klee	0d24ebdbbe	tui: preserve selection after copy (#44496 ) Copy-on-select reset the click counter, so a third click could not select the full line. Keep the selection after copying to preserve multi-click input.	2026-08-23 20:40:19 +02:00
opencode-agent[bot]andrekram1-node	b22c182406	fix(ai): preserve inline file data URLs (#44499 ) Co-authored-by: rekram1-node <63023139+rekram1-node@users.noreply.github.com>	2026-08-23 13:39:38 -05:00
Aiden Cline	c7f2f367e3	refactor(ai): remove deprecated local shell (#44497 )	2026-08-23 13:36:10 -05:00
Aiden Cline	ccd2135e7a	fix(ai): tolerate explicit nulls in Gemini stream payloads (#44490 )	2026-08-23 13:17:13 -05:00
Brendan Allan	c7c22b9d7e	fix(app): stabilize pane transitions (#44484 )	2026-08-23 17:59:00 +00:00
Aiden Cline	67e99993f5	fix(ai): align Responses compatibility (#44482 )	2026-08-23 12:53:14 -05:00
Brendan Allan	be6abc02b5	fix(app): preserve session panes across navigation (#44477 )	2026-08-23 17:37:24 +00:00
Aiden Cline	e012a57d1d	fix(ai): harden Gemini tool call id handling on Vertex and duplicate streams (#44454 )	2026-08-23 12:31:30 -05:00
Brendan Allan	697e3e13cc	fix(app): simplify session max width (#44468 )	2026-08-24 01:01:11 +08:00
Brendan Allan	89451c3e32	fix(app): navigate parent with escape (#44441 )	2026-08-23 23:45:29 +08:00
Brendan Allan	ad7d515d50	fix(session-ui): avoid replaying thinking summary animation (#44440 )	2026-08-23 23:43:17 +08:00
Brendan Allan	8e71c8425f	fix(app): hide empty terminal cursor (#44435 )	2026-08-23 15:34:40 +00:00
Brendan Allan	da4ab56801	fix(session-ui): hide empty file diffs (#44425 )	2026-08-23 23:15:47 +08:00
Brendan Allan	dd780ca882	fix(app): hand off optimistic attachments (#44411 )	2026-08-23 22:59:51 +08:00
Brendan Allan	fb9c9a2cbd	fix(desktop): restore session completion alerts (#44412 )	2026-08-23 22:35:06 +08:00
Brendan Allan	4c786f0ff8	fix(app): preserve subagent tab lineage (#44404 )	2026-08-23 22:18:39 +08:00
Brendan Allan	1def4aa35a	fix(app): avoid replaying streamed markdown fade (#44396 )	2026-08-23 21:10:43 +08:00
opencode-agent[bot]andBrendonovich	de11122c96	feat(app): search sessions by ID (#44387 ) Co-authored-by: Brendonovich <14191578+Brendonovich@users.noreply.github.com>	2026-08-23 20:17:57 +08:00
opencode-agent[bot]	62e3b6ad78	chore: update nix node_modules hashes	2026-08-23 11:49:19 +00:00
Brendan Allan	2c99b549db	fix(app): redesign model selection dialog (#44383 )	2026-08-23 19:34:14 +08:00
Luke Parker	d7c3a95368	feat(app): refine expanded shell output (#44368 )	2026-08-23 11:31:40 +00:00
opencode-agent[bot]	3b5b5aee0c	chore: update nix node_modules hashes	2026-08-23 11:16:11 +00:00
Brendan Allan	8cbfac3184	fix(desktop): smooth startup hydration (#44377 )	2026-08-23 19:07:10 +08:00
opencode-agent[bot]andBrendonovich	e765349865	feat(session-ui): render streaming markdown with Solid (#44354 ) Co-authored-by: Brendonovich <Brendonovich@users.noreply.github.com>	2026-08-23 19:00:46 +08:00
opencode-agent[bot]andBrendonovich	750f3384ff	fix(app): defer service worker takeover (#44374 ) Co-authored-by: Brendonovich <14191578+Brendonovich@users.noreply.github.com>	2026-08-23 18:52:45 +08:00
Simon Klee	1cf61593b5	ci: fix node build (#44349 )	2026-08-23 11:26:26 +02:00
opencode-agent[bot]	708e4d8867	fix(app): refine mobile error page (#44353 )	2026-08-23 09:23:10 +00:00
Luke Parker	0a5349c51c	fix(session-ui): restore compaction summaries (#44311 )	2026-08-23 18:57:06 +10:00
opencode-agent[bot]	3fd93b659b	chore: update nix node_modules hashes	2026-08-23 08:28:38 +00:00
Simon Klee	17a445de3e	tui: update OpenTUI to 0.5.7 (#44345 )	2026-08-23 10:15:17 +02:00
Brendan Allan	68e3888bc3	fix(app): preserve session header while loading (#44346 )	2026-08-23 16:09:13 +08:00
Brendan Allan	27a53969d6	fix(app): stabilize initial timeline rendering (#44333 )	2026-08-23 16:06:50 +08:00
Brendan Allan	1e3d3fcaca	fix(app): complete leading paginated turns (#44322 )	2026-08-23 15:27:33 +08:00
opencode-agent[bot]	7420903859	chore: update nix node_modules hashes	2026-08-23 07:25:41 +00:00
Simon Klee	853d3534e5	cli: share app archive across Node builds (#44331 )	2026-08-23 09:11:54 +02:00
Brendan Allan	6cd3da1d4c	fix(app): preserve scroll across history prepends (#44317 )	2026-08-23 15:00:29 +08:00
Brendan Allan	9692bcbc21	fix(session-ui): align status tool typography (#44330 )	2026-08-23 14:55:53 +08:00
Brendan Allan	79d5359d11	fix(app): align background hint spacing (#44329 )	2026-08-23 14:50:32 +08:00
Brendan Allan	b9ca77c5ff	fix(app): suspend composer until restored (#44320 )	2026-08-23 14:46:28 +08:00
Brendan Allan	7a72e51710	fix(app): reuse global model state (#44319 )	2026-08-23 14:26:53 +08:00
Brendan Allan	0fda7d1b33	fix(session-ui): reduce tool error spacing (#44318 )	2026-08-23 14:25:48 +08:00
Brendan Allan	6ba707d305	fix(app): synchronize composer model controls (#44316 )	2026-08-23 14:25:27 +08:00
Brendan Allan	d144c81d17	fix(app): preserve session shell while loading (#44315 )	2026-08-23 14:18:38 +08:00
Brendan Allan	b8fb894ec7	fix(server): compress responses with correct content types (#44321 )	2026-08-23 06:18:20 +00:00
Brendan Allan	b7167aaab0	feat(app): add project icon setting (#44323 )	2026-08-23 06:18:15 +00:00
Luke Parker	ad59ccc2e2	fix(ui): standardize safe text metrics (#44106 )	2026-08-23 13:47:17 +10:00
Luke Parker	a82318019f	fix(app): skip service worker in development (#44302 )	2026-08-23 13:35:05 +10:00
Luke Parker	e9d58abd99	test(app): stabilize file expansion anchor (#44293 )	2026-08-23 13:05:31 +10:00
Brendan Allan	1ce7e90d3e	fix(app): register service worker after load (#44294 )	2026-08-23 10:50:56 +08:00
Aiden Cline	92658e4389	fix(ai): preserve raw provider error payload on responses streams (#44271 )	2026-08-22 20:59:59 -05:00