fix(core): execute renamed tool definitions

2026-08-10 11:39:45 -04:00 · 2026-08-02 18:10:40 +00:00
1505 changed files with 69563 additions and 134574 deletions
@@ -4,7 +4,6 @@ on:
  push:
    branches:
      - dev
-      - v2

 jobs:
  generate:
@@ -281,6 +281,7 @@ jobs:

  build-electron:
    needs:
+      - build-cli
      - version
    if: github.repository == 'anomalyco/opencode' && github.ref_name != 'v2'
    continue-on-error: false
@@ -377,14 +378,16 @@ jobs:
        env:
          OPENCODE_VERSION: ${{ needs.version.outputs.version }}
          OPENCODE_CHANNEL: ${{ (github.ref_name == 'beta' && 'beta') || 'prod' }}
+          OPENCODE_CLI_ARTIFACT: ${{ (runner.os == 'Windows' && 'opencode-cli-windows') || 'opencode-cli' }}
          RUST_TARGET: ${{ matrix.settings.target }}
+          GH_TOKEN: ${{ github.token }}
+          GITHUB_RUN_ID: ${{ github.run_id }}

      - name: Build
        run: bun run build
        working-directory: packages/desktop
        env:
          NODE_OPTIONS: --max-old-space-size=4096
-          OPENCODE_VERSION: ${{ needs.version.outputs.version }}
          OPENCODE_CHANNEL: ${{ (github.ref_name == 'beta' && 'beta') || 'prod' }}
          SENTRY_AUTH_TOKEN: ${{ secrets.SENTRY_AUTH_TOKEN }}
          SENTRY_ORG: ${{ vars.SENTRY_ORG }}
@@ -402,7 +405,8 @@ jobs:
        env:
          OPENCODE_CHANNEL: ${{ (github.ref_name == 'beta' && 'beta') || 'prod' }}
          GH_TOKEN: ${{ steps.committer.outputs.token }}
-          CSC_KEYCHAIN: build.keychain
+          CSC_LINK: ${{ secrets.APPLE_CERTIFICATE }}
+          CSC_KEY_PASSWORD: ${{ secrets.APPLE_CERTIFICATE_PASSWORD }}
          APPLE_API_KEY: ${{ runner.temp }}/apple-api-key.p8
          APPLE_API_KEY_ID: ${{ secrets.APPLE_API_KEY }}
          APPLE_API_ISSUER: ${{ secrets.APPLE_API_ISSUER }}
@@ -251,3 +251,4 @@ opencode-drive stop --name demo
 ```bash
 opencode-drive dir --name demo
 ```
+
@@ -1,63 +0,0 @@
---
-name: rtl-aware-development
-description: OpenCode Desktop should be RTL-aware. Use when implementing or reviewing RTL/LTR behavior in the web app, desktop app, CSS, menus, scrolling, resizing, icons, mixed-direction text, or Electron title bars.
---
-
-# RTL-Aware Development
-
-Treat direction as independent from language. Test English in both directions as well as real RTL and mixed-script content.
-
-## Guidelines
-
- Set `lang` and `dir` on the document, and propagate direction through component providers used by portaled menus and popovers. Do not change the selected locale merely to force RTL.
- Keep DOM and focus order semantic. Flexbox and Grid already follow `dir`; do not add `row-reverse`, CSS `order`, or reversed markup just to mirror a layout.
- Prefer logical CSS for semantic layout. Reserve physical coordinates for pointer positions, canvas geometry, native window controls, and other genuinely physical placement.
-
-```css
-/* Avoid */
-padding-left: 12px;
-right: 0;
-border-right: 1px solid;
-text-align: left;
-
-/* Prefer */
-padding-inline-start: 12px;
-inset-inline-end: 0;
-border-inline-end: 1px solid;
-text-align: start;
-```
-
- Isolate mixed-direction text. Use `dir="auto"` or `<bdi>` for unknown text; keep code, URLs, IDs, and filesystem paths LTR without forcing the surrounding component LTR.
-
-```html
-<span class="file-row"><bdi dir="auto">README.md</bdi></span> <bdi dir="ltr"><code>C:\src\app.ts</code></bdi>
-```
-
- Mirror directional meaning, not every image. Back/forward, previous/next, disclosure, indentation, and directional progress may need mirroring. Do not mirror brands, clocks, media controls, charts, or text. Reverse physical gradients, `translateX`, SVG transforms, and animation deltas explicitly.
- Map interactions through direction. `clientX` remains physical; resizing a logical edge needs an RTL-aware delta. Logical previous/next keyboard controls may swap ArrowLeft/ArrowRight. Follow the relevant WAI-ARIA widget pattern.
- Do not assume LTR scrolling. RTL `scrollLeft` can start at `0` and become negative. Prefer `scrollIntoView({ inline: "nearest" })` or a tested direction-normalizing helper.
- For Electron title bars, prefer native caption controls and use `titleBarOverlay` plus `env(titlebar-area-*)` for the safe content rectangle. Keep Windows/macOS native-control avoidance and `trafficLightPosition` physical; keep app navigation inside that rectangle logical. Mark interactive titlebar children `app-region: no-drag`.
- Verify behavior, not screenshots alone. Check computed styles, pseudo-element geometry, hit zones, focus order, keyboard behavior, submenu direction, zoom/scaling, and both LTR and RTL scroll endpoints.
-
-## Test Matrix
-
- English + LTR
- English + forced RTL
- A real RTL locale + RTL
- Mixed RTL/LTR content, long labels, numbers, code, and paths
- Keyboard, pointer resize, scrolling, menus/submenus, and Electron titlebar controls in both directions
-
-## References
-
- [RTL Styling 101, Ahmad Shadeed](https://rtlstyling.com/posts/rtl-styling/)
- [CSS-Tricks: RTL Styling 101](https://css-tricks.com/rtl-styling-101/)
- [CSS-Tricks: CSS Logical Properties and Values](https://css-tricks.com/css-logical-properties-and-values/)
- [W3C: Structural markup and right-to-left text](https://www.w3.org/International/questions/qa-html-dir)
- [W3C: Inline bidirectional markup](https://www.w3.org/International/articles/inline-bidi-markup/)
- [MDN: CSS logical properties and values](https://developer.mozilla.org/en-US/docs/Web/CSS/Guides/Logical_properties_and_values)
- [MDN: `dir`](https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Global_attributes/dir)
- [MDN: `scrollLeft`](https://developer.mozilla.org/en-US/docs/Web/API/Element/scrollLeft)
- [web.dev: Logical properties](https://web.dev/learn/css/logical-properties/)
- [Electron: Custom title bar](https://www.electronjs.org/docs/latest/tutorial/custom-title-bar)
- [WAI-ARIA: Window splitter pattern](https://www.w3.org/WAI/ARIA/apg/patterns/windowsplitter/)
- [Kobalte: I18n Provider](https://kobalte.dev/docs/core/components/i18n-provider/)
@@ -252,6 +252,33 @@ These are not strictly enforced, they are just general guidelines:

 For net-new functionality, start with a design conversation. Open an issue describing the problem, your proposed approach (optional), and why it belongs in OpenCode. The core team will help decide whether it should move forward; please wait for that approval instead of opening a feature PR directly.

+## Trust & Vouch System
+
+This project uses [vouch](https://github.com/mitchellh/vouch) to manage contributor trust. The vouch list is maintained in [`.github/VOUCHED.td`](.github/VOUCHED.td).
+
+### How it works
+
+- **Vouched users** are explicitly trusted contributors.
+- **Denounced users** are explicitly blocked. Issues and pull requests from denounced users are automatically closed. If you have been denounced, you can request to be unvouched by reaching out to a maintainer on [Discord](https://opencode.ai/discord)
+- **Everyone else** can participate normally — you don't need to be vouched to open issues or PRs.
+
+### For maintainers
+
+Collaborators with write access can manage the vouch list by commenting on any issue:
+
+- `vouch` — vouch for the issue author
+- `vouch @username` — vouch for a specific user
+- `denounce` — denounce the issue author
+- `denounce @username` — denounce a specific user
+- `denounce @username <reason>` — denounce with a reason
+- `unvouch` / `unvouch @username` — remove someone from the list
+
+Changes are committed automatically to `.github/VOUCHED.td`.
+
+### Denouncement policy
+
+Denouncement is reserved for users who repeatedly submit low-quality AI-generated contributions, spam, or otherwise act in bad faith. It is not used for disagreements or honest mistakes.
+
 ## Issue Requirements

 All issues **must** use one of our issue templates:
@@ -53,7 +53,7 @@
    },
    "packages/app": {
      "name": "@opencode-ai/app",
-      "version": "1.18.15",
+      "version": "1.18.8",
      "dependencies": {
        "@corvu/drawer": "catalog:",
        "@dnd-kit/abstract": "0.5.0",
@@ -64,6 +64,7 @@
        "@opencode-ai/client": "workspace:*",
        "@opencode-ai/core": "workspace:*",
        "@opencode-ai/schema": "workspace:*",
+        "@opencode-ai/sdk": "file:vendor/opencode-ai-sdk-1.18.8-dev.tgz",
        "@opencode-ai/session-ui": "workspace:*",
        "@opencode-ai/ui": "workspace:*",
        "@opencode-ai/util": "workspace:*",
@@ -87,7 +88,6 @@
        "@tanstack/solid-query": "5.91.4",
        "@tanstack/solid-virtual": "catalog:",
        "@thisbeyond/solid-dnd": "0.7.5",
-        "diff": "catalog:",
        "effect": "catalog:",
        "fuzzysort": "catalog:",
        "ghostty-web": "github:anomalyco/ghostty-web#83c0a07b8628b748aed073b232cb4b52a6ca11c1",
@@ -111,7 +111,6 @@
        "@types/luxon": "catalog:",
        "@types/node": "catalog:",
        "@typescript/native-preview": "catalog:",
-        "happy-dom": "20.11.1",
        "tw-animate-css": "1.4.0",
        "typescript": "catalog:",
        "vite": "catalog:",
@@ -220,7 +219,7 @@
    },
    "packages/console/app": {
      "name": "@opencode-ai/console-app",
-      "version": "1.18.15",
+      "version": "1.18.8",
      "dependencies": {
        "@cloudflare/vite-plugin": "1.15.2",
        "@ibm/plex": "6.4.1",
@@ -256,7 +255,7 @@
    },
    "packages/console/core": {
      "name": "@opencode-ai/console-core",
-      "version": "1.18.15",
+      "version": "1.18.8",
      "dependencies": {
        "@aws-sdk/client-sts": "3.782.0",
        "@jsx-email/render": "1.1.1",
@@ -283,11 +282,15 @@
    },
    "packages/console/function": {
      "name": "@opencode-ai/console-function",
-      "version": "1.18.15",
+      "version": "1.18.8",
      "dependencies": {
+        "@ai-sdk/anthropic": "3.0.82",
+        "@ai-sdk/openai": "3.0.48",
+        "@ai-sdk/openai-compatible": "2.0.37",
        "@openauthjs/openauth": "0.0.0-20250322224806",
        "@opencode-ai/console-core": "workspace:*",
        "@opencode-ai/console-resource": "workspace:*",
+        "ai": "catalog:",
        "zod": "catalog:",
      },
      "devDependencies": {
@@ -295,12 +298,13 @@
        "@tsconfig/node22": "22.0.2",
        "@types/node": "catalog:",
        "@typescript/native-preview": "catalog:",
+        "openai": "5.11.0",
        "typescript": "catalog:",
      },
    },
    "packages/console/mail": {
      "name": "@opencode-ai/console-mail",
-      "version": "1.18.15",
+      "version": "1.18.8",
      "dependencies": {
        "@jsx-email/all": "2.2.3",
        "@jsx-email/cli": "1.4.3",
@@ -324,7 +328,7 @@
    },
    "packages/console/support": {
      "name": "@opencode-ai/console-support",
-      "version": "1.18.15",
+      "version": "1.18.8",
      "dependencies": {
        "@cloudflare/vite-plugin": "1.15.2",
        "@opencode-ai/console-core": "workspace:*",
@@ -357,15 +361,18 @@
        "@ai-sdk/cohere": "3.0.27",
        "@ai-sdk/deepinfra": "2.0.41",
        "@ai-sdk/gateway": "3.0.104",
+        "@ai-sdk/google": "3.0.73",
        "@ai-sdk/google-vertex": "4.0.128",
        "@ai-sdk/groq": "3.0.31",
        "@ai-sdk/mistral": "3.0.51",
+        "@ai-sdk/openai": "3.0.84",
        "@ai-sdk/openai-compatible": "2.0.41",
        "@ai-sdk/perplexity": "3.0.26",
        "@ai-sdk/provider": "3.0.8",
        "@ai-sdk/provider-utils": "4.0.23",
        "@ai-sdk/togetherai": "2.0.41",
        "@ai-sdk/vercel": "2.0.39",
+        "@ai-sdk/xai": "3.0.102",
        "@aws-sdk/credential-providers": "3.1057.0",
        "@effect/platform-node": "catalog:",
        "@effect/sql-sqlite-bun": "catalog:",
@@ -379,6 +386,7 @@
        "@opencode-ai/plugin": "workspace:*",
        "@opencode-ai/schema": "workspace:*",
        "@opencode-ai/util": "workspace:*",
+        "@openrouter/ai-sdk-provider": "2.9.0",
        "@parcel/watcher": "2.5.1",
        "@silvia-odwyer/photon-node": "0.3.4",
        "@standard-schema/spec": "catalog:",
@@ -388,14 +396,13 @@
        "drizzle-orm": "catalog:",
        "effect": "catalog:",
        "fuzzysort": "3.1.0",
-        "gitlab-ai-provider": "6.12.1",
+        "gitlab-ai-provider": "6.11.1",
        "google-auth-library": "10.5.0",
        "gray-matter": "4.0.3",
        "htmlparser2": "8.0.2",
        "ignore": "7.0.5",
        "immer": "11.1.4",
        "jsonc-parser": "3.3.1",
-        "mime-types": "3.0.2",
        "tree-sitter-bash": "0.25.0",
        "tree-sitter-powershell": "0.25.10",
        "turndown": "7.2.0",
@@ -424,16 +431,16 @@
    },
    "packages/desktop": {
      "name": "@opencode-ai/desktop",
-      "version": "1.18.15",
+      "version": "1.18.8",
      "dependencies": {
        "@zip.js/zip.js": "2.7.62",
-        "drizzle-orm": "catalog:",
        "effect": "catalog:",
        "electron-context-menu": "4.1.2",
        "electron-log": "^5",
        "electron-store": "11.0.2",
        "electron-updater": "6.8.9",
        "electron-window-state": "^5.0.3",
+        "marked": "^15",
      },
      "devDependencies": {
        "@actions/artifact": "4.0.0",
@@ -478,7 +485,7 @@
    },
    "packages/effect-drizzle-sqlite": {
      "name": "@opencode-ai/effect-drizzle-sqlite",
-      "version": "1.18.15",
+      "version": "1.18.8",
      "dependencies": {
        "drizzle-orm": "catalog:",
        "effect": "catalog:",
@@ -490,9 +497,21 @@
        "@typescript/native-preview": "catalog:",
      },
    },
+    "packages/effect-sqlite-node": {
+      "name": "@opencode-ai/effect-sqlite-node",
+      "version": "1.18.8",
+      "dependencies": {
+        "effect": "catalog:",
+      },
+      "devDependencies": {
+        "@tsconfig/bun": "catalog:",
+        "@types/node": "catalog:",
+        "@typescript/native-preview": "catalog:",
+      },
+    },
    "packages/enterprise": {
      "name": "@opencode-ai/enterprise",
-      "version": "1.18.15",
+      "version": "1.18.8",
      "dependencies": {
        "@hono/standard-validator": "catalog:",
        "@opencode-ai/core": "workspace:*",
@@ -525,7 +544,7 @@
    },
    "packages/function": {
      "name": "@opencode-ai/function",
-      "version": "1.18.15",
+      "version": "1.18.8",
      "dependencies": {
        "@octokit/auth-app": "8.0.1",
        "@octokit/rest": "catalog:",
@@ -541,7 +560,7 @@
    },
    "packages/http-recorder": {
      "name": "@opencode-ai/http-recorder",
-      "version": "1.18.15",
+      "version": "1.18.8",
      "dependencies": {
        "@effect/platform-node-shared": "4.0.0-beta.101",
      },
@@ -571,23 +590,9 @@
        "@typescript/native-preview": "catalog:",
      },
    },
-    "packages/merman": {
-      "name": "@opencode-ai/merman",
-      "version": "0.0.0",
-      "dependencies": {
-        "@opencode-ai/plugin": "workspace:*",
-        "@opentui/core": "catalog:",
-        "string-width": "catalog:",
-      },
-      "devDependencies": {
-        "@tsconfig/bun": "catalog:",
-        "@types/bun": "catalog:",
-        "@typescript/native-preview": "catalog:",
-      },
-    },
    "packages/plugin": {
      "name": "@opencode-ai/plugin",
-      "version": "1.18.15",
+      "version": "1.18.8",
      "dependencies": {
        "@ai-sdk/provider": "3.0.8",
        "@opencode-ai/ai": "workspace:*",
@@ -693,7 +698,6 @@
        "@opencode-ai/util": "workspace:*",
        "drizzle-orm": "catalog:",
        "effect": "catalog:",
-        "modal": "0.9.0",
      },
      "devDependencies": {
        "@tsconfig/bun": "catalog:",
@@ -703,7 +707,7 @@
    },
    "packages/session-ui": {
      "name": "@opencode-ai/session-ui",
-      "version": "1.18.15",
+      "version": "1.18.8",
      "dependencies": {
        "@kobalte/core": "catalog:",
        "@opencode-ai/client": "workspace:*",
@@ -718,11 +722,15 @@
        "@solid-primitives/media": "2.3.3",
        "@solid-primitives/resize-observer": "2.1.3",
        "@solidjs/meta": "catalog:",
+        "@solidjs/router": "catalog:",
        "diff": "catalog:",
        "dompurify": "3.3.1",
        "fuzzysort": "catalog:",
+        "katex": "0.16.27",
        "luxon": "catalog:",
        "marked": "catalog:",
+        "marked-katex-extension": "5.1.6",
+        "marked-shiki": "catalog:",
        "morphdom": "2.7.8",
        "motion": "12.34.5",
        "remeda": "catalog:",
@@ -735,6 +743,7 @@
      "devDependencies": {
        "@tsconfig/node22": "catalog:",
        "@types/bun": "catalog:",
+        "@types/katex": "0.16.7",
        "@types/luxon": "catalog:",
        "@typescript/native-preview": "catalog:",
        "typescript": "catalog:",
@@ -765,7 +774,7 @@
    },
    "packages/slack": {
      "name": "@opencode-ai/slack",
-      "version": "1.18.15",
+      "version": "1.18.8",
      "dependencies": {
        "@opencode-ai/sdk": "1.18.5",
        "@slack/bolt": "^3.17.1",
@@ -778,7 +787,7 @@
    },
    "packages/stats/app": {
      "name": "@opencode-ai/stats-app",
-      "version": "1.18.15",
+      "version": "1.18.8",
      "dependencies": {
        "@ibm/plex": "6.4.1",
        "@kobalte/core": "catalog:",
@@ -812,7 +821,7 @@
    },
    "packages/stats/core": {
      "name": "@opencode-ai/stats-core",
-      "version": "1.18.15",
+      "version": "1.18.8",
      "dependencies": {
        "@aws-sdk/client-athena": "3.933.0",
        "@planetscale/database": "1.19.0",
@@ -831,7 +840,7 @@
    },
    "packages/stats/server": {
      "name": "@opencode-ai/stats-server",
-      "version": "1.18.15",
+      "version": "1.18.8",
      "dependencies": {
        "@aws-sdk/client-firehose": "3.933.0",
        "@effect/platform-node": "catalog:",
@@ -891,7 +900,6 @@
      "dependencies": {
        "@opencode-ai/client": "workspace:*",
        "@opencode-ai/core": "workspace:*",
-        "@opencode-ai/merman": "workspace:*",
        "@opencode-ai/plugin": "workspace:*",
        "@opencode-ai/schema": "workspace:*",
        "@opencode-ai/simulation": "workspace:*",
@@ -903,6 +911,7 @@
        "@opentui/solid": "catalog:",
        "@solid-primitives/event-bus": "1.1.2",
        "clipboardy": "4.0.0",
+        "diff": "catalog:",
        "effect": "catalog:",
        "fuzzysort": "catalog:",
        "get-east-asian-width": "catalog:",
@@ -922,7 +931,7 @@
    },
    "packages/ui": {
      "name": "@opencode-ai/ui",
-      "version": "1.18.15",
+      "version": "1.18.8",
      "dependencies": {
        "@kobalte/core": "catalog:",
        "@pierre/diffs": "catalog:",
@@ -938,6 +947,7 @@
        "katex": "0.16.27",
        "luxon": "catalog:",
        "marked": "catalog:",
+        "marked-katex-extension": "5.1.6",
        "marked-shiki": "catalog:",
        "morphdom": "2.7.8",
        "motion": "12.34.5",
@@ -947,7 +957,6 @@
        "remend": "catalog:",
        "shiki": "catalog:",
        "solid-list": "catalog:",
-        "solid-sonner": "catalog:",
        "strip-ansi": "7.1.2",
      },
      "devDependencies": {
@@ -1019,7 +1028,7 @@
    },
    "packages/web": {
      "name": "@opencode-ai/web",
-      "version": "1.18.15",
+      "version": "1.18.8",
      "dependencies": {
        "@astrojs/cloudflare": "12.6.3",
        "@astrojs/markdown-remark": "6.3.1",
@@ -1029,6 +1038,7 @@
        "@shikijs/transformers": "3.20.0",
        "@solid-primitives/resize-observer": "2.1.5",
        "@types/luxon": "catalog:",
+        "ai": "catalog:",
        "astro": "5.7.13",
        "diff": "catalog:",
        "js-base64": "3.7.7",
@@ -1076,6 +1086,7 @@
  "patchedDependencies": {
    "@pierre/trees@1.0.0-beta.4": "patches/@pierre%2Ftrees@1.0.0-beta.4.patch",
    "effect@4.0.0-beta.101": "patches/effect@4.0.0-beta.101.patch",
+    "@ai-sdk/xai@3.0.102": "patches/@ai-sdk%2Fxai@3.0.102.patch",
    "@modelcontextprotocol/sdk@1.29.0": "patches/@modelcontextprotocol%2Fsdk@1.29.0.patch",
    "@tanstack/virtual-core@3.17.3": "patches/@tanstack%2Fvirtual-core@3.17.3.patch",
    "@standard-community/standard-openapi@0.2.9": "patches/@standard-community%2Fstandard-openapi@0.2.9.patch",
@@ -1084,8 +1095,6 @@
    "@silvia-odwyer/photon-node@0.3.4": "patches/@silvia-odwyer%2Fphoton-node@0.3.4.patch",
    "solid-js@1.9.10": "patches/solid-js@1.9.10.patch",
    "@ai-sdk/google@3.0.73": "patches/@ai-sdk%2Fgoogle@3.0.73.patch",
-    "@dnd-kit/dom@0.5.0": "patches/@dnd-kit%2Fdom@0.5.0.patch",
-    "@ai-sdk/openai-compatible@2.0.41": "patches/@ai-sdk%2Fopenai-compatible@2.0.41.patch",
  },
  "overrides": {
    "@opentui/core": "catalog:",
@@ -1143,7 +1152,7 @@
    "hono": "4.10.7",
    "hono-openapi": "1.1.2",
    "luxon": "3.6.1",
-    "marked": "18.0.7",
+    "marked": "17.0.6",
    "marked-shiki": "1.2.1",
    "opentui-spinner": "0.0.7",
    "remeda": "2.26.0",
@@ -1153,7 +1162,6 @@
    "shiki": "4.2.0",
    "solid-js": "1.9.10",
    "solid-list": "0.3.0",
-    "solid-sonner": "0.3.1",
    "sst": "4.13.1",
    "string-width": "7.2.0",
    "tailwindcss": "4.1.11",
@@ -1212,9 +1220,9 @@

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@@ -2088,6 +2078,8 @@

    "@opencode-ai/effect-drizzle-sqlite": ["@opencode-ai/effect-drizzle-sqlite@workspace:packages/effect-drizzle-sqlite"],

+    "@opencode-ai/effect-sqlite-node": ["@opencode-ai/effect-sqlite-node@workspace:packages/effect-sqlite-node"],
+
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    "@opencode-ai/function": ["@opencode-ai/function@workspace:packages/function"],
@@ -2096,8 +2088,6 @@

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-    "@opencode-ai/merman": ["@opencode-ai/merman@workspace:packages/merman"],
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    "@opencode-ai/protocol": ["@opencode-ai/protocol@workspace:packages/protocol"],
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@@ -3652,7 +3636,7 @@

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@@ -4190,7 +4174,7 @@

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@@ -4610,8 +4594,6 @@

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@@ -4664,7 +4646,9 @@

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@@ -4836,8 +4820,6 @@

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@@ -4876,10 +4858,6 @@

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    "@opencode-ai/session-ui/@opencode-ai/sdk": ["@opencode-ai/sdk@../app/vendor/opencode-ai-sdk-1.18.8-dev.tgz", { "dependencies": { "cross-spawn": "7.0.6" } }, "sha512-C2nfk4x0sPINwE5V6DPkFSuH3PkUmKPWHPzxpXC1j+3Ui5hslLCWJbkk8WcOG1Lyt3C0+yp4ea64v/kmtYCO4w=="],
@@ -6600,8 +6578,6 @@

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-    "blume/@ai-sdk/openai-compatible": ["@ai-sdk/openai-compatible@2.0.37", "", { "dependencies": { "@ai-sdk/provider": "3.0.8", "@ai-sdk/provider-utils": "4.0.21" }, "peerDependencies": { "zod": "^3.25.76 || ^4.1.8" } }, "sha512-+POSFVcgiu47BK64dhsI6OpcDC0/VAE2ZSaXdXGNNhpC/ava++uSRJYks0k2bpfY0wwCTgpAWZsXn/dG2Yppiw=="],
-
    "blume/@astrojs/mdx": ["@astrojs/mdx@7.0.3", "", { "dependencies": { "@astrojs/internal-helpers": "0.10.1", "@astrojs/markdown-remark": "7.2.1", "@mdx-js/mdx": "^3.1.1", "acorn": "^8.16.0", "es-module-lexer": "^2.0.0", "estree-util-visit": "^2.0.0", "hast-util-to-html": "^9.0.5", "piccolore": "^0.1.3", "rehype-raw": "^7.0.0", "remark-gfm": "^4.0.1", "remark-smartypants": "^3.0.2", "source-map": "^0.7.6", "unist-util-visit": "^5.1.0", "vfile": "^6.0.3" }, "peerDependencies": { "@astrojs/markdown-satteri": "^0.3.1", "astro": "^7.0.0" }, "optionalPeers": ["@astrojs/markdown-satteri"] }, "sha512-RxyIwU0uFam5ftwqKOjpIdhnFxZ/kEikeimLyQy3eGXbHT8WgRGzzesOIHVU8+m9TY8ag5WVOyvV24/GyqPdPQ=="],

    "blume/@clack/prompts": ["@clack/prompts@1.7.0", "", { "dependencies": { "@clack/core": "1.4.3", "fast-string-width": "^3.0.2", "fast-wrap-ansi": "^0.2.0", "sisteransi": "^1.0.5" } }, "sha512-y7/yvZ2TPAnR9+jnc00klvNNLkJiXFFrQA/hlLCcxA9a2A4zQIOimyFQ9XfwYKiGD1fb5GY8vbKIIgO8d5Tb2A=="],
@@ -6620,6 +6596,8 @@

    "blume/katex": ["katex@0.17.0", "", { "dependencies": { "commander": "^8.3.0" }, "bin": { "katex": "cli.js" } }, "sha512-Vdw0ATsQ9V+LuegM/BTwQqV/6cTl5lbGcIrU+BCgLxyf6bo38ybOr372tuSIxir3CN720flu1meYR6XzNMwQnw=="],

+    "blume/marked": ["marked@18.0.7", "", { "bin": { "marked": "bin/marked.js" } }, "sha512-iDVQ5ldaiKXn6b2JroX5kgRfmwgqolW7NpaEzTl1k/2Zh1njIEN9yniyLV/mOvWwtsE8OGgkjsCYvijuPk1dtA=="],
+
    "blume/node-html-parser": ["node-html-parser@9.0.0", "", { "dependencies": { "css-select": "^5.1.0", "entities": "^8.0.0" } }, "sha512-MhdaHPyxnyYu/sf0TpiRvDnTrkum0UKHC7FdbDGIUQNlx3I7xzwXoyV0eMUMv/XU+lkJT1glOUzpDPq7b2p1Ew=="],

    "blume/react": ["react@19.2.8", "", {}, "sha512-PWaYA1L/q9u2u7xYQi+Y3L3Yfnie7XyLeaJICV1MGD6LprsBxcAqGjYyr0eY3p+QdsA+x/Irkt4Qif8D63+Sbw=="],
@@ -6636,8 +6614,6 @@

    "builder-util/js-yaml": ["js-yaml@4.3.0", "", { "dependencies": { "argparse": "^2.0.1" }, "bin": { "js-yaml": "bin/js-yaml.js" } }, "sha512-1td788aAnnZ5qs7V2QIRl1owjtYpbKt749Y3xauqQgwIIGF/xXWz1wMTEBx5O3LK3lXLVuqXPdPxj2BoFHaW9Q=="],

-    "cbor-extract/node-gyp-build-optional-packages": ["node-gyp-build-optional-packages@5.1.1", "", { "dependencies": { "detect-libc": "^2.0.1" }, "bin": { "node-gyp-build-optional-packages": "bin.js", "node-gyp-build-optional-packages-test": "build-test.js", "node-gyp-build-optional-packages-optional": "optional.js" } }, "sha512-+P72GAjVAbTxjjwUmwjVrqrdZROD4nf8KgpBoDxqXXTiYZZt/ud60dE5yvCSr9lRO8e8yv6kgJIC0K0PfZFVQw=="],
-
    "cliui/string-width": ["string-width@4.2.3", "", { "dependencies": { "emoji-regex": "^8.0.0", "is-fullwidth-code-point": "^3.0.0", "strip-ansi": "^6.0.1" } }, "sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g=="],

    "cliui/strip-ansi": ["strip-ansi@6.0.1", "", { "dependencies": { "ansi-regex": "^5.0.1" } }, "sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A=="],
@@ -6738,6 +6714,8 @@

    "gcp-metadata/google-logging-utils": ["google-logging-utils@1.1.3", "", {}, "sha512-eAmLkjDjAFCVXg7A1unxHsLf961m6y17QFqXqAXGj/gVkKFrEICfStRfwUlGNfeCEjNRa32JEWOUTlYXPyyKvA=="],

+    "gitlab-ai-provider/openai": ["openai@6.49.0", "", { "peerDependencies": { "@aws-sdk/credential-provider-node": ">=3.972.0 <4", "@smithy/hash-node": ">=4.3.0 <5", "@smithy/signature-v4": ">=5.4.0 <6", "ws": "^8.18.0", "zod": "^3.25 || ^4.0" }, "optionalPeers": ["@aws-sdk/credential-provider-node", "@smithy/hash-node", "@smithy/signature-v4", "ws", "zod"] }, "sha512-aYCc0C6L864eR6WSYIwQGyXriw/nIyZx0ObvhzOEVuk0zoBDpynjSbrionWI7q65B5H8jJX0DXR9snEzM6bfPg=="],
+
    "gitlab-ai-provider/zod": ["zod@3.25.76", "", {}, "sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ=="],

    "globby/ignore": ["ignore@5.3.2", "", {}, "sha512-hsBTNUqQTDwkWtcdYI2i06Y/nUBEsNEDJKjWdigLvegy8kDuJAS8uRlpkkcQpyEXL0Z/pjDy5HBmMjRCJ2gq+g=="],
@@ -6754,8 +6732,6 @@

    "jszip/readable-stream": ["readable-stream@2.3.8", "", { "dependencies": { "core-util-is": "~1.0.0", "inherits": "~2.0.3", "isarray": "~1.0.0", "process-nextick-args": "~2.0.0", "safe-buffer": "~5.1.1", "string_decoder": "~1.1.1", "util-deprecate": "~1.0.1" } }, "sha512-8p0AUk4XODgIewSi0l8Epjs+EVnWiK7NoDIEGU0HhE7+ZyY8D1IMY7odu5lRrFXGg71L15KG8QrPmum45RTtdA=="],

-    "katex/commander": ["commander@8.3.0", "", {}, "sha512-OkTL9umf+He2DZkUq8f8J9of7yL6RJKI24dVITBmNfZBmri9zYZQrKkuXiKhyfPSu8tUhnVBB1iKXevvnlR4Ww=="],
-
    "lazystream/readable-stream": ["readable-stream@2.3.8", "", { "dependencies": { "core-util-is": "~1.0.0", "inherits": "~2.0.3", "isarray": "~1.0.0", "process-nextick-args": "~2.0.0", "safe-buffer": "~5.1.1", "string_decoder": "~1.1.1", "util-deprecate": "~1.0.1" } }, "sha512-8p0AUk4XODgIewSi0l8Epjs+EVnWiK7NoDIEGU0HhE7+ZyY8D1IMY7odu5lRrFXGg71L15KG8QrPmum45RTtdA=="],

    "matcher/escape-string-regexp": ["escape-string-regexp@4.0.0", "", {}, "sha512-TtpcNJ3XAzx3Gq8sWRzJaVajRs0uVxA2YAkdb1jm2YkPz4G6egUFAyA3n5vtEIZefPk5Wa4UXbKuS5fKkJWdgA=="],
@@ -6784,8 +6760,6 @@

    "minipass-pipeline/minipass": ["minipass@3.3.6", "", { "dependencies": { "yallist": "^4.0.0" } }, "sha512-DxiNidxSEK+tHG6zOIklvNOwm3hvCrbUrdtzY74U6HKTJxvIDfOUL5W5P2Ghd3DTkhhKPYGqeNUIh5qcM4YBfw=="],

-    "modal/uuid": ["uuid@11.1.1", "", { "bin": { "uuid": "dist/esm/bin/uuid" } }, "sha512-vIYxrBCC/N/K+Js3qSN88go7kIfNPssr/hHCesKCQNAjmgvYS2oqr69kIufEG+O4+PfezOH4EbIeHCfFov8ZgQ=="],
-
    "motion/framer-motion": ["framer-motion@12.42.2", "", { "dependencies": { "motion-dom": "^12.42.2", "motion-utils": "^12.39.0", "tslib": "^2.4.0" }, "peerDependencies": { "@emotion/is-prop-valid": "*", "react": "^18.0.0 || ^19.0.0", "react-dom": "^18.0.0 || ^19.0.0" }, "optionalPeers": ["@emotion/is-prop-valid", "react", "react-dom"] }, "sha512-5XY9luDiu0oHfHBjpDthFMh0ES+122w6p/papSJBweMkO8Sn+PW2QaEgRblQBpWFnuvZS5qvarpt/hO2pjGmnw=="],

    "nitro/h3": ["h3@2.0.1-rc.5", "", { "dependencies": { "rou3": "^0.7.9", "srvx": "^0.9.1" }, "peerDependencies": { "crossws": "^0.4.1" }, "optionalPeers": ["crossws"] }, "sha512-qkohAzCab0nLzXNm78tBjZDvtKMTmtygS8BJLT3VPczAQofdqlFXDPkXdLMJN4r05+xqneG8snZJ0HgkERCZTg=="],
@@ -6886,8 +6860,12 @@

    "terser/acorn": ["acorn@8.17.0", "", { "bin": { "acorn": "bin/acorn" } }, "sha512-xRQbDb9BnwDafYNn6Vwl839DYVjqXYb1XVGtWAZ1kcDc6iwAL4hg3B1dZlRiuENFeO2H53gFG3in621AdERVAg=="],

+    "terser/commander": ["commander@2.20.3", "", {}, "sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ=="],
+
    "tiny-async-pool/semver": ["semver@5.7.2", "", { "bin": { "semver": "bin/semver" } }, "sha512-cBznnQ9KjJqU67B52RMC65CMarK2600WFnbkcaiwWq3xy/5haFJlshgnpjovMVJ+Hff49d8GEn0b87C5pDQ10g=="],

+    "topojson-client/commander": ["commander@2.20.3", "", {}, "sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ=="],
+
    "tree-sitter-bash/node-addon-api": ["node-addon-api@8.9.0", "", {}, "sha512-ekZMeaaIzSQTSpr7X2X3iJM7lTzgnx8ahAG9pJfT/7+14mlEM8ZYQ9cgCDvSSRbReFK0oHli3WrZdCiRsgAT9Q=="],

    "tw-to-css/postcss": ["postcss@8.4.31", "", { "dependencies": { "nanoid": "^3.3.6", "picocolors": "^1.0.0", "source-map-js": "^1.0.2" } }, "sha512-PS08Iboia9mts/2ygV3eLpY5ghnUcfLV/EXTOW1E2qYxJKGGBUtNjN76FYHnMs36RmARn41bC0AZmn+rR0OVpQ=="],
@@ -7402,6 +7380,10 @@

    "@octokit/rest/@octokit/core/before-after-hook": ["before-after-hook@4.0.0", "", {}, "sha512-q6tR3RPqIB1pMiTRMFcZwuG5T8vwp+vUvEG0vuI6B+Rikh5BfPp2fQ82c925FOs+b0lcFQ8CFrL+KbilfZFhOQ=="],

+    "@opencode-ai/core/@ai-sdk/openai/@ai-sdk/provider": ["@ai-sdk/provider@3.0.14", "", { "dependencies": { "json-schema": "^0.4.0" } }, "sha512-5X1k57JBJ4H7H1QjX7CnJYAB1I19r/trVZTMcSms7/kLNZ8RaU4Nt2agcwZzv82Hfx6Q7/TOLU7agAKeFfc8cA=="],
+
+    "@opencode-ai/core/@ai-sdk/openai/@ai-sdk/provider-utils": ["@ai-sdk/provider-utils@4.0.38", "", { "dependencies": { "@ai-sdk/provider": "3.0.14", "@standard-schema/spec": "^1.1.0", "eventsource-parser": "^3.0.8" }, "peerDependencies": { "zod": "^3.25.76 || ^4.1.8" } }, "sha512-/HHGmtKllqjg1OLc023v9w9kK3laW7Z6TzfZukYQWCsGBbzB9p60zTvvpXFVcs44NZBVXL3viOa1HRKUbeee8g=="],
+
    "@opencode-ai/desktop/@actions/artifact/@actions/core": ["@actions/core@1.11.1", "", { "dependencies": { "@actions/exec": "^1.1.1", "@actions/http-client": "^2.0.1" } }, "sha512-hXJCSrkwfA46Vd9Z3q4cpEpHB1rL5NG04+/rbqW9d3+CSvtB1tYe8UTpAlixa1vj0m/ULglfEK2UKxMGxCxv5A=="],

    "@opencode-ai/desktop/@actions/artifact/@actions/http-client": ["@actions/http-client@2.2.3", "", { "dependencies": { "tunnel": "^0.0.6", "undici": "^5.25.4" } }, "sha512-mx8hyJi/hjFvbPokCg4uRd4ZX78t+YyRPtnKWwIl+RzNaVuFpQHfmlGVfsKEJN8LwTCvL+DfVgAM04XaHkm6bA=="],
@@ -7638,8 +7620,6 @@

    "babel-plugin-module-resolver/glob/path-scurry": ["path-scurry@1.11.1", "", { "dependencies": { "lru-cache": "^10.2.0", "minipass": "^5.0.0 || ^6.0.2 || ^7.0.0" } }, "sha512-Xa4Nw17FS9ApQFJ9umLiJS4orGjm7ZzwUrwamcGQuHSzDyth9boKDaycYdDcZDuqYATXw4HFXgaqWTctW/v1HA=="],

-    "blume/@ai-sdk/openai-compatible/@ai-sdk/provider-utils": ["@ai-sdk/provider-utils@4.0.21", "", { "dependencies": { "@ai-sdk/provider": "3.0.8", "@standard-schema/spec": "^1.1.0", "eventsource-parser": "^3.0.6" }, "peerDependencies": { "zod": "^3.25.76 || ^4.1.8" } }, "sha512-MtFUYI1/8mgDvRmaBDjbLJPFFrMG777AvSgyIFQtZHIMzm88R/12vYBBpnk7pfiWLFE1DSZzY4WDYzGbKAcmiw=="],
-
    "blume/@astrojs/mdx/@astrojs/internal-helpers": ["@astrojs/internal-helpers@0.10.1", "", { "dependencies": { "@types/hast": "^3.0.4", "@types/mdast": "^4.0.4", "js-yaml": "^4.1.1", "picomatch": "^4.0.4", "retext-smartypants": "^6.2.0", "shiki": "^4.0.2", "smol-toml": "^1.6.0", "unified": "^11.0.5" } }, "sha512-5phcroT/vmOOrYuuAxtkbPixy5hePtlz9i8K4OeDv3dNK6/UQRuXPOSRTxIOBbUY5Sonw2UaxjbuVc43Mcir6Q=="],

    "blume/@astrojs/mdx/@astrojs/markdown-remark": ["@astrojs/markdown-remark@7.2.1", "", { "dependencies": { "@astrojs/internal-helpers": "0.10.1", "@astrojs/prism": "4.0.2", "github-slugger": "^2.0.0", "hast-util-from-html": "^2.0.3", "hast-util-to-text": "^4.0.2", "mdast-util-definitions": "^6.0.0", "rehype-raw": "^7.0.0", "rehype-stringify": "^10.0.1", "remark-gfm": "^4.0.1", "remark-parse": "^11.0.0", "remark-rehype": "^11.1.2", "remark-smartypants": "^3.0.2", "unified": "^11.0.5", "unist-util-remove-position": "^5.0.0", "unist-util-visit": "^5.1.0", "unist-util-visit-parents": "^6.0.2", "vfile": "^6.0.3" } }, "sha512-jPVNIqTvk+yKviikszv/Y1U4jGUSKpp/Nw48QZV4qjWgp70j4Lkq3lhSDRbWwCfgKvEyO9GHuVbV1dM2WYXy1w=="],
@@ -7710,8 +7690,6 @@

    "blume/js-yaml/argparse": ["argparse@2.0.1", "", {}, "sha512-8+9WqebbFzpX9OR+Wa6O29asIogeRMzcGtAINdpMHHyAg10f05aSFVBbcEqGf/PXw1EjAZ+q2/bEBg3DvurK3Q=="],

-    "blume/katex/commander": ["commander@8.3.0", "", {}, "sha512-OkTL9umf+He2DZkUq8f8J9of7yL6RJKI24dVITBmNfZBmri9zYZQrKkuXiKhyfPSu8tUhnVBB1iKXevvnlR4Ww=="],
-
    "blume/node-html-parser/entities": ["entities@8.0.0", "", {}, "sha512-zwfzJecQ/Uej6tusMqwAqU/6KL2XaB2VZ2Jg54Je6ahNBGNH6Ek6g3jjNCF0fG9EWQKGZNddNjU5F1ZQn/sBnA=="],

    "blume/react-dom/scheduler": ["scheduler@0.27.0", "", {}, "sha512-eNv+WrVbKu1f3vbYJT/xtiF5syA5HPIMtf9IgY/nKg0sWqzAUEvqY/xm7OcZc/qafLx/iO9FgOmeSAp4v5ti/Q=="],
@@ -7784,8 +7762,6 @@

    "lazystream/readable-stream/string_decoder": ["string_decoder@1.1.1", "", { "dependencies": { "safe-buffer": "~5.1.0" } }, "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg=="],

-    "mermaid/katex/commander": ["commander@8.3.0", "", {}, "sha512-OkTL9umf+He2DZkUq8f8J9of7yL6RJKI24dVITBmNfZBmri9zYZQrKkuXiKhyfPSu8tUhnVBB1iKXevvnlR4Ww=="],
-
    "motion/framer-motion/motion-dom": ["motion-dom@12.42.2", "", { "dependencies": { "motion-utils": "^12.39.0" } }, "sha512-5gIMWLp/PycBtJRJWRgjxke5n8dlvkSn2DrYW+tr3XcqAZY1xZh6BJyooJXCM8wdfM7wfMjkBJNLge1CKPUIRA=="],

    "motion/framer-motion/motion-utils": ["motion-utils@12.39.0", "", {}, "sha512-8nadJAJjTtqRkmRF36FoJTrywK9nnFmnPwnSMyxaOCU7GDjN9RTMJIxx9De8ErM+vpPhMccr/6fo5WciyQLnMQ=="],
@@ -5,27 +5,8 @@
 - Use the `dev` branch database schema and migration registry as the V1 baseline.
 - Remove migrations that exist only on the V2 branch.
 - Generate one canonical migration from the `dev` schema to the final V2 schema.
- Keep the canonical migration focused on schema changes and dropping obsolete tables.
- Run the V1 history backfill through an experimental server endpoint invoked by the CLI before it opens the TUI.
- Show committed session progress while the endpoint runs.
-
-Expose `GET /api/experimental/migration/v1` for status and a blocking `POST /api/experimental/migration/v1` to run or
-resume the backfill. The status is `required`, `running`, or `completed`. On startup, the CLI checks status first and
-renders no migration UI when it is already complete. For required or running status, it shows a spinner and waits for the
-blocking POST without a request timeout. While migration runs, poll GET once per second and render completed and total
-session counts. GET derives total from all session rows and completed from rows through the stored cursor; the count
-advances only after a session transaction commits. The POST returns `{ status: "completed" }`. Do not add a background
-job or streaming progress protocol. Interrupted calls resume from the stored cursor.
-Initially, only interactive TUI startup performs this check; noninteractive run, ACP, raw API, service, health, version,
-and help flows do not trigger the backfill.
-
-Keep migration behavior in Core: status, semaphore, checkpointing, V1 decoding, transformation, and database writes.
-Protocol owns the experimental GET/POST contracts, Server handlers delegate to Core, and the interactive CLI owns only
-the status check and spinner presentation.
-
-Guard the endpoint with one process-local Effect `Semaphore`. Concurrent callers wait; after the active call completes,
-waiting callers acquire the permit, observe the completion key, and return immediately. No distributed lock is required
-for the current single elected server process.
+- Add explicit data operations to that migration where generated DDL is insufficient.
+- Test the migration against a populated database at the exact `dev` schema.

 ## Preserve

@@ -34,35 +15,20 @@ The canonical V1 data remains in its existing tables. In particular, preserve `s
 Preserve `workspace` rows and existing `session.workspace_id` values unchanged. The migration must not clear or rebuild
 workspace relationships.

-Preserve existing non-null `session.agent` and `session.model` selections. Fill missing values from the latest ordinary
-V1 user message ordered by `time_created` and `id`, excluding compaction and subtask-only messages. Copy agent, provider
-ID, model ID, and variant, normalizing an absent variant to `default`.
+Keep the `todo` table and its data unchanged. V2 does not currently migrate todos into another representation, and the
+generated migration must not drop the table.

-Recompute session usage aggregates from all canonical V1 assistant messages, including compaction or other internal
-assistants omitted from the V2 projection. Overwrite session cost and input, output, reasoning, cache-read, and
-cache-write token totals with those sums.
+## Truncate

-Clear persisted `session.revert` state. A staged revert is transient operational state and may refer to omitted projection
-rows or unavailable snapshots; it must not resume automatically after upgrading. Preserve the underlying messages,
-parts, and file history.
+Truncate these pre-launch V2 tables before applying schema changes:

-Clear `session.time_compacting`, leave the new `time_suspended` column as `NULL`, and preserve session creation, update,
-and archive timestamps. Preserve project `time_initialized`; it is unrelated durable state.
+- `event`
+- `event_sequence`
+- `session_message`

-Keep the legacy `todo` table and its data physically unchanged, but do not include it in the final V2 Drizzle schema.
-After generation, remove the generated `DROP TABLE todo` statement from the canonical migration so the table remains as
-unmanaged legacy storage.
-
-## Per-Session Replacement
-
-Do not truncate `event`, `event_sequence`, or `session_message` globally before the backfill. A whole-table delete can
-hold SQLite's writer lock long enough to block the running TUI.
-
-Replace each legacy session's V2 state inside that session's checkpointed migration transaction. Delete `event` rows for
-the session aggregate, delete its `session_message` rows, rebuild its projection from canonical V1 `message` and `part`
-rows, and overwrite its `event_sequence` watermark. If migration of that session fails, all replacements roll back and
-the durable cursor remains at the previously committed session. Rows owned by sessions outside the legacy migration set
-remain untouched.
+These rows are not canonical V1 data. Truncating `event` before adding the required `event.created` column means the
+column needs neither a backfill nor a default. After truncation, rebuild `session_message` from canonical V1 `message`
+and `part` rows rather than retaining its pre-launch V2 contents.

 ## Message Backfill

@@ -70,23 +36,9 @@ Backfill canonical V1 history from `message` and `part` into `session_message`.
 the migration. Preserving the V1 tables alone keeps the data safe but does not make existing history visible through the
 V2 session APIs, which read `session_message`.

-Do not fail the whole migration when a V1 message or part payload cannot be decoded. Skip an undecodable message's V2
-projection and log its session and message IDs. Skip an undecodable part while continuing to map its message, and perform
-special-message pairing only with decoded rows. Assign sequences after filtering. Leave every malformed source row
-untouched in the V1 tables.
-
-Skip and log orphan parts whose source message does not exist and parts with unknown or unsupported types. Continue
-migrating the owning message and other valid parts. Include session, message, part ID, and observed type in warnings, and
-leave skipped source rows unchanged.
-
 Reuse each V1 `message.id` as the corresponding `session_message.id`. Stable IDs keep the migration deterministic and
 avoid rewriting other persisted state that may refer to a message.

-For ordinary user and assistant rows, preserve source `message.time_created` and `message.time_updated`. Entirely
-synthetic messages preserve their source timestamps, and synthetic rows split from mixed messages use the source user
-timestamps. A collapsed compaction uses the compaction user creation time and the later update time of the compaction
-user and summary assistant. Keep payload creation/completion times consistent with row timestamps.
-
 Within each session, order V1 messages by `time_created` and then `id`, matching the existing V1 message index. Assign
 contiguous `session_message.seq` values starting at `0`.

@@ -94,122 +46,15 @@ Map ordinary V1 messages one-to-one by role. Each ordinary V1 user message becom
 V1 assistant message becomes one V2 `assistant` row. Fold the source message's ordered V1 parts into that row's V2
 payload.

-Keep ordinary messages even when their transformed payload becomes empty after filtering. Preserve an empty V2 user row
-with `text: ""` and an empty V2 assistant row with `content: []` so IDs, chronology, and conversation structure remain
-stable. Omit only explicitly dropped internal concepts and undecodable messages.
-
 Handle semantic marker parts before applying the ordinary mapping. In particular, a V1 user message containing a
 `compaction` part and its paired assistant summary represent one compaction operation, not two ordinary messages. Special
 part mappings must be decided explicitly before implementing the backfill.

-Do not carry the V1 subtask concept into the V2 projection. Omit user messages containing only `subtask` parts and omit
-the paired assistant task-tool messages generated from those markers. For mixed user messages, ignore the `subtask`
-parts while preserving ordinary content, and still omit assistant task-tool messages generated by the skipped subtasks.
-Keep all source rows unchanged in the V1 `message` and `part` tables.
-
-Map ordinary V1 assistant `text` and `reasoning` parts into the V2 assistant `content` array in part order. Preserve text,
-including empty assistant text parts used as structural separators. Map V1 part metadata to optional V2 provider state.
-For reasoning, map `time.start` to `time.created` and optional `time.end` to `time.completed`.
-
-Preserve V1 tool parts that are `pending` or `running`, but convert them to terminal V2 tool error states. Preserve the
-call ID, tool name, parsed input, metadata, and available start time. Use the assistant message creation time when the V1
-state has no start time. Set the error to type `tool.interrupted` with message
-`Tool execution was interrupted before V2 migration`. Never resume migrated tool executions.
-
-For a completed V1 tool part, use `callID` as the V2 tool content ID and preserve the tool name and parsed input. Set the
-state to `completed`. Convert V1 output into the first text content item and convert stored output attachments into
-following file content items with their URI, MIME type, and filename. Preserve state metadata. Map `time.start` to
-`time.created` and `time.end` to `time.completed`. When `time.compacted` exists, use
-`[Old tool result content cleared]` as the only output and omit attachments.
-
-For a failed V1 tool part, preserve the call ID, tool name, parsed input, metadata, and timestamps, and set the V2 state
-to `error`. Convert the V1 error string to a structured error with type `tool.execution`. If V1 metadata contains a string
-`output`, preserve it as optional V2 text content. Map `time.start` to `time.created` and `time.end` to `time.completed`.
-
-For an ordinary V1 assistant message, preserve agent, provider ID, model ID, optional variant, creation and completion
-times, cost, and input/output/reasoning/cache token counts. Use `default` when the V1 variant is absent. Ignore V1
-`tokens.total` because it is derivable and V2 does not persist it.
-
-Use V1 assistant `parentID` only while pairing compactions and skipped subtasks with their originating user messages. Do
-not persist it in ordinary V2 assistant rows; V2 uses ordered history rather than user/assistant parent links.
-
-Ignore the optional V1 assistant `structured` output value. V2 has no equivalent top-level assistant field, and visible
-text and tool content are migrated separately. Retain the original structured value only in the V1 `message` row.
-
-Ignore V1 assistant `mode` and historical `path` (`cwd` and `root`). Mode is redundant with the preserved assistant
-agent, and historical filesystem paths do not belong to the V2 assistant message contract. Retain them only in the V1
-`message` row.
-
-For assistant finish reasons, preserve `stop`, `length`, `tool-calls`, `content-filter`, `error`, and `unknown`. Map every
-other nonempty V1 finish value to `unknown`, and leave the field absent when V1 omitted it. Do not retain unrecognized raw
-finish values in metadata.
-
-Map V1 assistant errors into the current V2 `{ type, message }` storage shape. Normalize Auth, content-filter, context
-overflow, structured-output, output-length, aborted, API, and unknown errors to the established V2 string conventions,
-preserve the message, and discard V1-only retryability and raw provider details.
-
-Ignore V1 `retry` parts. Do not populate the V2 assistant `retry` field during migration; historical retry state is not
-useful enough to preserve. The original retry rows remain in the V1 `part` table.
-
-Do not emit V2 assistant content for V1 `step-start` and `step-finish` parts. Use the first available
-`step-start.snapshot` as `assistant.snapshot.start` and the last available `step-finish.snapshot` as
-`assistant.snapshot.end`. Continue to source finish, cost, and tokens from the assistant message itself. Ignore step
-markers without snapshots.
-
-Do not emit assistant content for standalone V1 `snapshot` or `patch` parts. If no start snapshot came from `step-start`,
-use the first standalone snapshot value, then the first patch hash as a final fallback. Only `step-finish.snapshot` may
-populate the end snapshot. Merge patch file lists into `assistant.snapshot.files` in first-seen order with duplicates
-removed.
-
-V2 follow-up: replace the open `SessionError.Error` string shape with a properly typed persisted error union. This is not
-a blocker for the V1 migration, which should target the current storage contract.
-
 V1 synthetic content is represented by user text parts with `synthetic: true`, not by a separate message role. A V1 user
 message whose visible text parts are all synthetic should become a V2 `synthetic` message. If a V1 user message mixes
 ordinary and synthetic content, preserve the ordinary content in the V2 `user` row and emit the synthetic content as an
 adjacent V2 `synthetic` row. Ignore text parts marked `ignored`, matching V1 model-history behavior.

-For an ordinary V2 user message, take visible V1 text parts that are neither ignored nor synthetic, preserve part order,
-and join their text with `"\n\n"`. Use an empty string when the message contains attachments but no ordinary text.
-
-Ignore the optional V1 user-message `system` override. Do not create a V2 system message or preserve the override in
-metadata. The original value remains in the V1 `message` row.
-
-Ignore the optional V1 user-message `tools` map. It represented request-time tool enablement for a historical step and
-must not affect future V2 execution. The original value remains in the V1 `message` row.
-
-Ignore the optional V1 user-message `format` field and its schema. It controlled structured-output behavior for a
-historical request and must not affect future V2 runs. Preserve visible assistant text normally; retain the original
-format only in the V1 `message` row.
-
-Ignore V1 user-message `summary` metadata, including title, body, and diffs. V2 user messages have no equivalent field,
-and session-level summary data is already persisted separately. Retain the original summary only in the V1 `message`
-row.
-
-Map V1 `agent` parts into the V2 user message's `agents` array in part order. Preserve `name`. When the V1 part has
-`source`, map its `value`, `start`, and `end` into the V2 attachment's `mention.text`, `mention.start`, and `mention.end`.
-Omit `agents` when there are no agent parts.
-
-Do not read the filesystem or network while migrating V1 file attachments. Attachment migration must be deterministic
-from database contents alone. Convert persisted `data:` URLs; represent non-embedded `file:`, HTTP, and other external
-URLs with deterministic text rather than fetching them. Keep the original V1 `part` rows unchanged.
-
-For a V1 file backed by a `data:` URL, decode the URL and normalize its payload to base64 for the V2 attachment's `data`.
-Preserve `mime` and optional `filename` as `name`. Use a V2 `uri` source with the original URI for a V1 resource source;
-otherwise use an `inline` source. When V1 source text metadata exists, map its `value`, `start`, and `end` into the V2
-attachment mention. Leave `description` unset and preserve file-part order in the V2 `files` array.
-
-For a non-embedded V1 file, do not create a V2 file attachment. Append
-`[Attachment unavailable after migration: <name-or-url> (<mime>)]` to the V2 user text in original part order, separated
-by blank lines. Prefer the V1 filename, then resource URI, then part URL for the label. The original URL remains only in
-the preserved V1 `part` row.
-
-For a synthetic row split from a mixed user message, derive a generated-looking ID from the source message ID. Preserve
-the source ID's 12-character timestamp component and replace its 14-character random component with a deterministic
-base-62 encoding of a hash of `v1-synthetic:` plus the source message ID. If that candidate collides with an existing or
-derived message ID, deterministically retry with an incrementing salt. Place the synthetic row immediately after its
-source user row. Entirely synthetic messages continue to reuse their original message ID.
-
 Use the V1 compaction user message ID as the ID of the collapsed V2 compaction message. This matches V2's use of the
 admitted compaction input ID and preserves references to the initiating message.

@@ -219,13 +64,9 @@ serialize the retained V1 tail beginning at `tail_start_id` for `recent`. Use an
 retained, and use the compaction user message creation time. Do not emit the paired summary assistant as a separate V2
 assistant row.

-Do not project incomplete or failed V1 compactions into `session_message`. Omit both the internal compaction user marker
-and its paired summary assistant when no successful summary was completed. Assign final sequence numbers after filtering
-so omitted compactions leave no gaps. Their source rows remain preserved in the V1 `message` and `part` tables.
-
-After rebuilding a session's `session_message`, replace its `event_sequence` watermark with that session's maximum
-backfilled `session_message.seq`. This prevents new V2 events from reusing sequence numbers or sorting before migrated
-history. The migrated session's prior `event` rows are removed in the same transaction.
+After rebuilding `session_message`, seed `event_sequence` with one row per migrated session. Set its watermark to that
+session's maximum backfilled `session_message.seq`. This prevents new V2 events from reusing sequence numbers or sorting
+before migrated history. The `event` table remains empty.

 ## Drop

@@ -233,7 +74,6 @@ Drop these pre-launch V2 tables without preserving or transforming their rows:

 - `session_input`
 - `session_context_epoch`
- `data_migration`

 Do not transfer `session_input` rows into `session_pending`.

@@ -263,36 +103,16 @@ schema.
 New nullable session columns, including `fork_session_id`, `fork_boundary`, and `time_suspended`, require no explicit
 backfill. Existing rows naturally receive `NULL` when the generated migration adds the columns.

-## Execution
+## Verification

-Before transforming V1 rows, look for `opencode-next.db` in the data directory. This file was used by pre-launch V2
-builds. Open it read-only with Bun SQLite and copy its `project`, `session`, and `session_message` rows directly into the
-current `project`, `session_v2`, and `session_message` tables. Existing current projects and Sessions win ID collisions.
-Do not copy its durable events or runtime caches; initialize each imported Session's `event_sequence` watermark from its
-maximum message sequence. Commit each imported Session independently and leave the source database untouched.
+The canonical migration test should seed representative V1 sessions, messages, parts, todos, projects, accounts,
+credentials, permissions, shares, and workspaces. After migration, it should verify:

-The previous V2 import is part of this migration and uses the same completion marker. It needs no source-specific cursor:
-the destination Session row is the per-Session idempotency boundary, so a retry skips transactions that already committed.
-
-Store V1 backfill state in `kv`; do not retain a dedicated `data_migration` table. Store the last successfully migrated
-session ID under `migration.v1-v2.session.cursor` and write `migration.v1-v2.completed` with value `true` after every
-session finishes. Delete the cursor key on completion and return immediately on later calls when the completion key
-exists.
-
-Absence of the completion key means migration is required, including on a fresh database. Running the endpoint against a
-database with no sessions completes immediately and writes the completion key; fresh database initialization does not
-seed migration state specially.
-
-Process sessions in stable ID order. Rebuild one session in one transaction, including its `session_message` rows,
-session-level backfills, `event_sequence` watermark, and cursor update. If interrupted during a session, that transaction
-rolls back and the next endpoint call retries the same session. If it committed, the next call continues after the stored
-cursor. Mark the migration complete after the final session and return immediately on later calls.
-
-Ensure the global project exists using the current platform's filesystem root as its worktree. Process every `session`
-row, including archived, root, child, and empty sessions, as well as sessions whose messages are all skipped or internal.
-Reassign beta and V1 Sessions whose referenced project row is missing to the global project and log a warning. Each
-successfully committed session advances the cursor.
-
-## Testing
-
-Detailed migration test design is deferred until after the canonical migration is implemented.
+- Preserved rows and encoded values remain unchanged.
+- Todo rows remain available in the unchanged `todo` table.
+- `event` is empty, and stale pre-launch rows are absent from the rebuilt projections.
+- Backfilled `session_message` rows represent the canonical V1 `message` and `part` history.
+- Each migrated session's `event_sequence` watermark matches its maximum backfilled message sequence.
+- Dropped tables no longer exist.
+- New tables exist and are empty.
+- The final schema has no ungenerated changes.
@@ -288,12 +288,8 @@ new sst.cloudflare.x.SolidStart("Console", {
    server: {
      placement: { region: "aws:us-east-2" },
      transform: {
-        worker: (args) => {
-          args.compatibilityFlags = $resolve(args.compatibilityFlags).apply((flags) => [
-            ...(flags ?? []),
-            "global_fetch_strictly_public",
-          ])
-          args.tailConsumers = [{ service: logProcessor.nodes.worker.scriptName }]
+        worker: {
+          tailConsumers: [{ service: logProcessor.nodes.worker.scriptName }],
        },
      },
    },
@@ -1,8 +1,8 @@
 {
  "nodeModules": {
-    "x86_64-linux": "sha256-uduwrM143NDSc+tXsi4lVVfoMll2a3BDHRUjuO7GB68=",
-    "aarch64-linux": "sha256-6DUda78XdXY6DP86lIUkweSjys3iG4Y4mo1PiaNuXbg=",
-    "aarch64-darwin": "sha256-AkJwfLULLZVwwz+XU1QcFUZoIS7oVPCn+n/MXEaxrqE=",
-    "x86_64-darwin": "sha256-hAxKGdiITTxQ2uujQt6prNjo3NxGAMMeo+9HlMWK6GU="
+    "x86_64-linux": "sha256-RFek0QoEEjsgbqmTE/SxQAmPtYyzs0IPR2ugFn5Okrs=",
+    "aarch64-linux": "sha256-BmAxapY1YrAFn7mVq3/6A9+6Au5UIvSqBboHMkyJH3I=",
+    "aarch64-darwin": "sha256-Sx3bGWQqLlgoa/RudJxanjSzhFRNklckT2ffnO2I5F4=",
+    "x86_64-darwin": "sha256-CMOhiisHNowg06qadvgg4K+60zrynglwiT0qKYQ4NiA="
  }
 }
@@ -78,7 +78,7 @@
      "fuzzysort": "3.1.0",
      "get-east-asian-width": "1.6.0",
      "luxon": "3.6.1",
-      "marked": "18.0.7",
+      "marked": "17.0.6",
      "marked-shiki": "1.2.1",
      "remend": "1.3.0",
      "@playwright/test": "1.59.1",
@@ -100,7 +100,6 @@
      "@sentry/solid": "10.36.0",
      "@sentry/vite-plugin": "4.6.0",
      "solid-js": "1.9.10",
-      "solid-sonner": "0.3.1",
      "vite-plugin-solid": "2.11.10",
      "@lydell/node-pty": "1.2.0-beta.12"
    }
@@ -158,12 +157,11 @@
    "effect": "catalog:"
  },
  "patchedDependencies": {
-    "@ai-sdk/openai-compatible@2.0.41": "patches/@ai-sdk%2Fopenai-compatible@2.0.41.patch",
-    "@dnd-kit/dom@0.5.0": "patches/@dnd-kit%2Fdom@0.5.0.patch",
    "@npmcli/agent@4.0.2": "patches/@npmcli%2Fagent@4.0.2.patch",
    "@silvia-odwyer/photon-node@0.3.4": "patches/@silvia-odwyer%2Fphoton-node@0.3.4.patch",
    "@standard-community/standard-openapi@0.2.9": "patches/@standard-community%2Fstandard-openapi@0.2.9.patch",
    "solid-js@1.9.10": "patches/solid-js@1.9.10.patch",
+    "@ai-sdk/xai@3.0.102": "patches/@ai-sdk%2Fxai@3.0.102.patch",
    "@ai-sdk/mistral@3.0.51": "patches/@ai-sdk%2Fmistral@3.0.51.patch",
    "gcp-metadata@8.1.2": "patches/gcp-metadata@8.1.2.patch",
    "pacote@21.5.0": "patches/pacote@21.5.0.patch",
@@ -10,7 +10,7 @@

 ## Conventions

-Per-type constructors live on the type, not as top-level re-exports. Use `Message.system(...)`, `Message.user(...)`, `Message.assistant(...)`, `Message.tool(...)`, `LanguageModel.make(...)`, `ToolDefinition.make(...)`, `ToolCallPart.make(...)`, `ToolResultPart.make(...)`, `ToolChoice.make(...)`, `ToolChoice.named(...)`, `SystemPart.make(...)`, and `GenerationOptions.make(...)` directly. The top-level `LLM` namespace is reserved for request-shaped call APIs: `LLM.request`, `LLM.generate`, `LLM.stream`, and `LLM.generateObject`. Use `LLMRequest.update(...)` when deriving canonical request data; do not add a duplicate `LLM.updateRequest(...)` path. Two ways to construct the same thing is one too many.
+Per-type constructors live on the type, not as top-level re-exports. Use `Message.system(...)`, `Message.user(...)`, `Message.assistant(...)`, `Message.tool(...)`, `LanguageModel.make(...)`, `ToolDefinition.make(...)`, `ToolCallPart.make(...)`, `ToolResultPart.make(...)`, `ToolChoice.make(...)`, `ToolChoice.named(...)`, `SystemPart.make(...)`, and `GenerationOptions.make(...)` directly. The top-level `LLM` namespace is reserved for request-shaped call APIs: `LLM.request`, `LLM.generate`, `LLM.stream`, `LLM.updateRequest`, and `LLM.generateObject`. Two ways to construct the same thing is one too many.

 - Keep provider-defined string enums forward-compatible. Expose known values for autocomplete while accepting future values with `Known | (string & {})`; use `Schema.String` at runtime unless rejecting unknown values is required for correctness.

@@ -3,9 +3,8 @@
 Schema-first AI primitives for opencode. Provider quirks live in adapters, not in calling code.

 ```ts
-import { Effect, Layer } from "effect"
+import { Effect } from "effect"
 import { LLM, LLMClient } from "@opencode-ai/ai"
-import { RequestExecutor } from "@opencode-ai/ai/route"
 import { OpenAI } from "@opencode-ai/ai/providers"

 const model = OpenAI.configure({ apiKey: process.env.OPENAI_API_KEY }).responses("gpt-4o-mini")
@@ -21,10 +20,6 @@ const program = Effect.gen(function* () {
  const response = yield* LLMClient.generate(request)
  console.log(response.text)
 })
-
-const llmLayer = LLMClient.layer.pipe(Layer.provide(RequestExecutor.fetchLayer))
-
-await Effect.runPromise(program.pipe(Effect.provide(llmLayer)))
 ```

 Run `LLMClient.stream(request)` instead of `generate` when you want incremental `LLMEvent`s. The event stream is provider-neutral — same shape across OpenAI Chat, OpenAI Responses, Anthropic Messages, Gemini, Bedrock Converse, and any OpenAI-compatible deployment.
@@ -205,32 +200,6 @@ The hosted result is represented as a provider-executed tool call and tool resul
 - **`Image.generate({...})`** — generate images through a provider-neutral image request and response model.
 - **`ImageClient`** — Effect service and layer for image execution, parallel to `LLMClient`.

-## Testing
-
-Use the deterministic test client from `@opencode-ai/ai/testing` to script provider-neutral responses and inspect
-the requests sent by code under test:
-
-```ts
-import { Effect } from "effect"
-import { TestLLM } from "@opencode-ai/ai/testing"
-
-const testLLM = TestLLM.layer({
-  fallback: TestLLM.text("Hello from the test model", "text-1"),
-})
-
-// TestLLM.clientLayer provides LLMClient.Service and consumes TestLLM.Service.
-const programWithTestClient = Effect.gen(function* () {
-  const result = yield* program
-  const test = yield* TestLLM.Service
-  console.log(test.requests)
-  return result
-}).pipe(Effect.provide(TestLLM.clientLayer), Effect.provide(testLLM))
-```
-
-`TestLLM.push(...)` scripts one-shot responses, `TestLLM.always(...)` changes the fallback, and
-`TestLLM.wait(...)` lets concurrent tests wait until a request has arrived. Every received canonical request is
-available on the yielded `TestLLM.Service`.
-
 ## Caching

 Prompt caching is **on by default**. Every `LLMRequest` resolves to `cache: "auto"` unless the caller opts out with `cache: "none"`. Each protocol translates `CacheHint`s to its wire format (`cache_control` on Anthropic, `cachePoint` on Bedrock; OpenAI and Gemini do implicit caching server-side and don't need inline markers — auto is a no-op there).
@@ -368,12 +337,11 @@ Other provider exports listed above remain direct facades until they explicitly

 ## Provider options & HTTP overlays

-Request options in order of stability:
+Three escape hatches in order of stability:

 1. **`generation`** — portable knobs (`maxTokens`, `temperature`, `topP`, `topK`, penalties, seed, stop).
-2. **`promptCacheKey`** — stable cache affinity lowered by every protocol that supports it.
-3. **`providerOptions: { <provider>: {...} }`** — typed-at-the-facade provider-specific knobs (OpenAI `store`, Anthropic `thinking`, Gemini `thinkingConfig`, OpenRouter routing).
-4. **`http: { body, headers, query }`** — last-resort serializable overlays merged into the final HTTP request. Reach for this only when a stable typed path doesn't yet exist.
+2. **`providerOptions: { <provider>: {...} }`** — typed-at-the-facade provider-specific knobs (OpenAI `promptCacheKey`, Anthropic `thinking`, Gemini `thinkingConfig`, OpenRouter routing).
+3. **`http: { body, headers, query }`** — last-resort serializable overlays merged into the final HTTP request. Reach for this only when a stable typed path doesn't yet exist.

 Route/provider defaults are overridden by request-level values for each axis.

@@ -33,10 +33,9 @@ const model = OpenAI.configure({
 //
 //   - `generation`: common controls such as max tokens, temperature, topP/topK,
 //     penalties, seed, and stop sequences.
-//   - `promptCacheKey`: stable cache affinity for protocols that support it.
 //   - `providerOptions`: namespaced provider-native behavior. For example,
-//     OpenAI store behavior, Anthropic thinking, Gemini thinking config, or
-//     OpenRouter routing/reasoning.
+//     OpenAI cache keys and store behavior, Anthropic thinking, Gemini thinking
+//     config, or OpenRouter routing/reasoning.
 //   - `http`: last-resort serializable overlays for final request body, headers,
 //     and query params. Prefer typed `providerOptions` when a field is stable.
 //
@@ -46,7 +45,9 @@ const request = LLM.request({
  system: "You are concise and practical.",
  prompt: "Tell me a joke",
  generation: { maxTokens: 80, temperature: 0.7 },
-  promptCacheKey: "tutorial-joke",
+  providerOptions: {
+    openai: { promptCacheKey: "tutorial-joke" },
+  },
 })

 // 3. `generate` sends the request and collects the event stream into one
@@ -2,7 +2,7 @@ import * as fs from "node:fs/promises"
 import * as path from "node:path"

 const RECORDINGS_DIR = path.resolve(import.meta.dir, "..", "test", "fixtures", "recordings")
-const MODELS_DEV_URL = "https://models.opencode.ai/api.json"
+const MODELS_DEV_URL = "https://models.dev/api.json"

 type JsonRecord = Record<string, unknown>

@@ -133,8 +133,7 @@ const countHints = (request: LLMRequest) =>

 export const applyCachePolicy = (request: LLMRequest): LLMRequest => {
  if (!RESPECTS_INLINE_HINTS.has(request.model.route.id)) return request
-  if (request.model.route.id === "openrouter" && (request.cache === undefined || request.cache === "auto"))
-    return request
+  if (request.model.route.id === "openrouter" && (request.cache === undefined || request.cache === "auto")) return request
  const policy = resolve(request.cache)
  if (!policy.tools && !policy.system && !policy.messages) return request

@@ -15,11 +15,11 @@ export class Service extends Context.Service<Service, Interface>()("@opencode/Im

 export const generate = <Options extends ImageOptions>(
  request: ImageRequestFor<Options>,
-): Effect.Effect<ImageResponse, AIError, Service> =>
+): Effect.Effect<ImageResponse, AIError> =>
  Effect.gen(function* () {
    const client = yield* Service
    return yield* client.generate(request)
-  })
+  }) as Effect.Effect<ImageResponse, AIError>

 export const layer: Layer.Layer<Service, never, RequestExecutor.Service> = Layer.effect(
  Service,
@@ -1,5 +1,5 @@
 import { Effect, JsonSchema, Schema } from "effect"
-import { LLMClient, Service } from "./route/client"
+import { LLMClient } from "./route/client"
 import {
  GenerationOptions,
  HttpOptions,
@@ -151,10 +151,10 @@ const runGenerateObject = Effect.fn("LLM.generateObject")(function* (
 */
 export function generateObject<const SelectedLanguageModel extends LanguageModel, S extends ToolSchema<any>>(
  options: GenerateObjectOptions<S, SelectedLanguageModel>,
-): Effect.Effect<GenerateObjectResponse<Schema.Schema.Type<S>>, AIError, Service>
+): Effect.Effect<GenerateObjectResponse<Schema.Schema.Type<S>>, AIError>
 export function generateObject<const SelectedLanguageModel extends LanguageModel>(
  options: GenerateObjectDynamicOptions<SelectedLanguageModel>,
-): Effect.Effect<GenerateObjectResponse<unknown>, AIError, Service>
+): Effect.Effect<GenerateObjectResponse<unknown>, AIError>
 export function generateObject(options: GenerateObjectOptions<ToolSchema<any>> | GenerateObjectDynamicOptions) {
  if ("schema" in options) {
    const { schema, ...rest } = options
@@ -422,12 +422,14 @@ const lowerMedia = Effect.fn("AnthropicMessages.lowerMedia")(function* (part: Me

 // Tool results may carry structured text, images, and documents. Keep media as provider-native
 // content instead of JSON-stringifying base64 into a prompt string.
-const lowerToolResultContentItem = Effect.fnUntraced(function* (item: Tool.Content) {
+const lowerToolResultContentItem = Effect.fn("AnthropicMessages.lowerToolResultContentItem")(function* (
+  item: Tool.Content,
+) {
  if (item.type === "text") return { type: "text" as const, text: item.text } satisfies AnthropicTextBlock
  return yield* lowerMedia({ type: "media", mediaType: item.mime, data: item.uri, filename: item.name })
 })

-const lowerToolResultContent = Effect.fnUntraced(function* (part: ToolResultPart) {
+const lowerToolResultContent = Effect.fn("AnthropicMessages.lowerToolResultContent")(function* (part: ToolResultPart) {
  // Text / json / error results stay as a string for backward compatibility
  // with existing cassettes and provider expectations.
  if (part.result.type !== "content") return ProviderShared.toolResultText(part)
@@ -25,20 +25,8 @@ import { ToolSchemaProjection } from "./utils/tool-schema"

 const ADAPTER = "gemini"
 const MEDIA_MIMES = new Set<string>(ProviderShared.MEDIA_MIMES)
-// Google documents this sentinel for replaying Gemini 3 function calls after their original signature was lost.
-const SKIP_THOUGHT_SIGNATURE_VALIDATOR = "skip_thought_signature_validator"
 export const DEFAULT_BASE_URL = "https://generativelanguage.googleapis.com/v1beta"

-// Gemini 3 rejects replayed function calls without a thought signature. Google's SDKs avoid that in normal chats by
-// retaining complete model responses, but OpenCode reconstructs durable history and may encounter an unsigned call
-// from an older or external session. Model IDs are open-ended, so unknown Gemini aliases inherit current behavior.
-const requiresThoughtSignatureFallback = (modelID: string) => {
-  if (!/(^|\/)gemini-/i.test(modelID)) return false
-  if (/(^|\/)gemini-(?:1|2)(?:[.-]|$)/i.test(modelID)) return false
-  if (/(^|\/)gemini-pro(?:-vision)?$/i.test(modelID)) return false
-  return !/(^|\/)gemini-robotics-er-1\.5(?:[.-]|$)/i.test(modelID)
-}
-
 export interface OptionsInput {
  readonly [key: string]: unknown
  readonly cachedContent?: string
@@ -157,9 +145,6 @@ const GeminiGenerationConfig = Schema.Struct({
  temperature: Schema.optional(Schema.Number),
  topP: Schema.optional(Schema.Number),
  topK: Schema.optional(Schema.Number),
-  frequencyPenalty: Schema.optional(Schema.Number),
-  presencePenalty: Schema.optional(Schema.Number),
-  seed: Schema.optional(Schema.Number),
  stopSequences: optionalArray(Schema.String),
  thinkingConfig: Schema.optional(GeminiThinkingConfig),
 })
@@ -217,13 +202,11 @@ interface ParserState {
 //    keys on non-object scalars. Mirrors OpenCode's historical Gemini rules.
 //
 // 2. Project — lossy mapping from JSON Schema to Gemini's schema dialect:
-//    drop empty root parameter schemas while preserving nested empty objects,
-//    expand type arrays into `anyOf`, derive `nullable: true` from null members,
-//    coerce `const` to `[const]` enum, recurse properties/items, and propagate
+//    drop empty objects, derive `nullable: true` from `type: [..., "null"]`,
+//    coerce `const` to `[const]` enum, recurse properties/items, propagate
 //    only an allowlisted set of keys (description, required, format, type,
-//    nullable, enum, properties, items, allOf, anyOf, oneOf, minLength).
-//    Anything outside the allowlist (e.g. `additionalProperties`, `$ref`) is
-//    silently dropped.
+//    properties, items, allOf, anyOf, oneOf, minLength). Anything outside the
+//    allowlist (e.g. `additionalProperties`, `$ref`) is silently dropped.
 //
 // Sanitize runs first, then project. The implementation lives in
 // `utils/gemini-tool-schema` so this protocol keeps the same shape as the other
@@ -299,8 +282,6 @@ const lowerMessages = Effect.fn("Gemini.lowerMessages")(function* (request: LLMR

    if (message.role === "assistant") {
      const parts: Array<Schema.Schema.Type<typeof GeminiContentPart>> = []
-      // Parallel Gemini 3 calls may carry one signature on the first call; unsigned sibling calls are valid.
-      let hasSignedToolCall = false
      for (const part of message.content) {
        if (!ProviderShared.supportsContent(part, ["text", "reasoning", "tool-call"]))
          return yield* ProviderShared.unsupportedContent("Gemini", "assistant", ["text", "reasoning", "tool-call"])
@@ -313,17 +294,7 @@ const lowerMessages = Effect.fn("Gemini.lowerMessages")(function* (request: LLMR
          continue
        }
        if (part.type === "tool-call") {
-          const lowered = lowerToolCall(part)
-          const signature = lowered.thoughtSignature
-          parts.push({
-            ...lowered,
-            thoughtSignature:
-              signature ??
-              (requiresThoughtSignatureFallback(request.model.id) && !hasSignedToolCall
-                ? SKIP_THOUGHT_SIGNATURE_VALIDATOR
-                : undefined),
-          })
-          if (signature !== undefined) hasSignedToolCall = true
+          parts.push(lowerToolCall(part))
          continue
        }
      }
@@ -417,9 +388,6 @@ const fromRequest = Effect.fn("Gemini.fromRequest")(function* (request: LLMReque
    temperature: generation?.temperature,
    topP: generation?.topP,
    topK: generation?.topK,
-    frequencyPenalty: generation?.frequencyPenalty,
-    presencePenalty: generation?.presencePenalty,
-    seed: generation?.seed,
    stopSequences: generation?.stop,
    thinkingConfig: options.thinkingConfig,
  }
@@ -476,7 +444,6 @@ const mapUsage = (usage: GeminiUsage | undefined) => {
 }

 const mapFinishReason = (finishReason: string | undefined, hasToolCalls: boolean): FinishReason => {
-  if (finishReason === undefined) return hasToolCalls ? "tool-calls" : "unknown"
  if (finishReason === "STOP") return hasToolCalls ? "tool-calls" : "stop"
  if (finishReason === "MAX_TOKENS") return "length"
  if (
@@ -358,7 +358,7 @@ const lowerMedia = Effect.fn("OpenResponses.lowerMedia")(function* (
  return { type: "input_image" as const, image_url: media.dataUrl }
 })

-const lowerUserContent = Effect.fnUntraced(function* (
+const lowerUserContent = Effect.fn("OpenResponses.lowerUserContent")(function* (
  part: LLMRequest["messages"][number]["content"][number],
  request: LLMRequest,
  extension: Extension,
@@ -370,7 +370,7 @@ const lowerUserContent = Effect.fnUntraced(function* (

 // Tool results may carry structured text, images, and files. Keep media as provider-native
 // content instead of JSON-stringifying base64 into a prompt string.
-const lowerToolResultContentItem = Effect.fnUntraced(function* (
+const lowerToolResultContentItem = Effect.fn("OpenResponses.lowerToolResultContentItem")(function* (
  item: Content,
  request: LLMRequest,
  extension: Extension,
@@ -383,7 +383,7 @@ const lowerToolResultContentItem = Effect.fnUntraced(function* (
  )
 })

-const lowerToolResultOutput = Effect.fnUntraced(function* (
+const lowerToolResultOutput = Effect.fn("OpenResponses.lowerToolResultOutput")(function* (
  part: ToolResultPart,
  request: LLMRequest,
  extension: Extension,
@@ -539,7 +539,7 @@ const lowerOptions = (request: LLMRequest) => {
  return {
    ...(options.instructions ? { instructions: options.instructions } : {}),
    ...(options.store !== undefined ? { store: options.store } : {}),
-    ...(request.promptCacheKey ? { prompt_cache_key: request.promptCacheKey } : {}),
+    ...(options.promptCacheKey ? { prompt_cache_key: options.promptCacheKey } : {}),
    ...(options.include ? { include: options.include } : {}),
    ...(options.reasoningEffort || options.reasoningSummary
      ? { reasoning: { effort: options.reasoningEffort, summary: options.reasoningSummary } }
@@ -67,12 +67,6 @@ const OpenAIChatAssistantToolCall = Schema.Struct({
 })
 type OpenAIChatAssistantToolCall = Schema.Schema.Type<typeof OpenAIChatAssistantToolCall>

-// Intentionally omit Gemini's provider-specific `extra_content.google.thought_signature`
-// extension until direct Google OpenAI-compatible routing is supported here:
-// https://github.com/vercel/ai/issues/11590
-// https://github.com/vercel/ai/pull/11745
-// https://ai.google.dev/gemini-api/docs/thought-signatures#openai
-
 const OpenAIChatUserContent = Schema.Union([
  Schema.Struct({
    type: Schema.Literal("text"),
@@ -132,7 +126,6 @@ export const bodyFields = {
  stream: Schema.Literal(true),
  stream_options: Schema.optional(Schema.Struct({ include_usage: Schema.Boolean })),
  store: Schema.optional(Schema.Boolean),
-  prompt_cache_key: Schema.optional(Schema.String),
  reasoning_effort: Schema.optional(OpenAIOptions.OpenAIReasoningEffort),
  max_completion_tokens: Schema.optional(Schema.Number),
  max_tokens: Schema.optional(Schema.Number),
@@ -152,33 +145,22 @@ export type OpenAIChatBody = Schema.Schema.Type<typeof OpenAIChatBody>
 // The event schema is one decoded SSE `data:` payload. `Framing.sse` splits the
 // byte stream into strings, then `Protocol.jsonEvent` decodes each string into
 // this provider-native event shape.
-const OpenAIChatUsage = Schema.StructWithRest(
-  Schema.Struct({
-    prompt_tokens: optionalNull(Schema.Number),
-    completion_tokens: optionalNull(Schema.Number),
-    total_tokens: optionalNull(Schema.Number),
-    prompt_tokens_details: optionalNull(
-      Schema.StructWithRest(
-        Schema.Struct({
-          cached_tokens: optionalNull(Schema.Number),
-          cache_write_tokens: optionalNull(Schema.Number),
-        }),
-        [Schema.Record(Schema.String, Schema.Unknown)],
-      ),
-    ),
-    completion_tokens_details: optionalNull(
-      Schema.StructWithRest(
-        Schema.Struct({
-          reasoning_tokens: optionalNull(Schema.Number),
-          accepted_prediction_tokens: optionalNull(Schema.Number),
-          rejected_prediction_tokens: optionalNull(Schema.Number),
-        }),
-        [Schema.Record(Schema.String, Schema.Unknown)],
-      ),
-    ),
-  }),
-  [Schema.Record(Schema.String, Schema.Unknown)],
-)
+const OpenAIChatUsage = Schema.Struct({
+  prompt_tokens: Schema.optional(Schema.Number),
+  completion_tokens: Schema.optional(Schema.Number),
+  total_tokens: Schema.optional(Schema.Number),
+  prompt_tokens_details: optionalNull(
+    Schema.Struct({
+      cached_tokens: Schema.optional(Schema.Number),
+      cache_write_tokens: Schema.optional(Schema.Number),
+    }),
+  ),
+  completion_tokens_details: optionalNull(
+    Schema.Struct({
+      reasoning_tokens: Schema.optional(Schema.Number),
+    }),
+  ),
+})

 const OpenAIChatToolCallDeltaFunction = Schema.Struct({
  name: optionalNull(Schema.String),
@@ -186,7 +168,7 @@ const OpenAIChatToolCallDeltaFunction = Schema.Struct({
 })

 const OpenAIChatToolCallDelta = Schema.Struct({
-  index: optionalNull(Schema.Number),
+  index: Schema.Number,
  id: optionalNull(Schema.String),
  function: optionalNull(OpenAIChatToolCallDeltaFunction),
 })
@@ -240,8 +222,6 @@ export interface ParserState {
  readonly reasoningDetails: Array<unknown>
  readonly reasoningDetailsObserved: boolean
  readonly reasoningEmitted: boolean
-  readonly latestToolIndex?: number
-  readonly nextToolIndex: number
 }

 // =============================================================================
@@ -371,13 +351,12 @@ const lowerAssistantMessage = Effect.fn("OpenAIChat.lowerAssistantMessage")(func
    return text
  })()
  const cached = message.content.findLast((part) => "cache" in part && part.cache !== undefined)
-  const cacheControl = options.cacheControl?.(cached && "cache" in cached ? cached.cache : undefined)
  const result = {
    role: "assistant" as const,
-    content: content.length > 0 ? content.map((part) => part.text).join("") : toolCalls.length > 0 ? null : "",
-    ...(toolCalls.length > 0 ? { tool_calls: toolCalls } : {}),
-    ...(details !== undefined ? { reasoning_details: details } : {}),
-    ...(cacheControl !== undefined ? { cache_control: cacheControl } : {}),
+    content: content.length === 0 ? null : ProviderShared.joinText(content),
+    tool_calls: toolCalls.length === 0 ? undefined : toolCalls,
+    reasoning_details: details,
+    cache_control: options.cacheControl?.(cached && "cache" in cached ? cached.cache : undefined),
  }
  if (field === undefined || reasoningText === undefined) return result
  return { ...result, [field]: reasoningText }
@@ -511,7 +490,6 @@ const lowerOptions = (request: LLMRequest) => {
  const options = OpenAIOptions.resolve(request)
  return {
    ...(options.store !== undefined ? { store: options.store } : {}),
-    ...(request.promptCacheKey ? { prompt_cache_key: request.promptCacheKey } : {}),
    ...(options.reasoningEffort ? { reasoning_effort: options.reasoningEffort } : {}),
  }
 }
@@ -581,34 +559,22 @@ const mapFinishReason = (reason: string | null | undefined): FinishReason => {
 // satisfied on both sides.
 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 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))
+  const cached = usage.prompt_tokens_details?.cached_tokens
+  const cacheWrite = usage.prompt_tokens_details?.cache_write_tokens
+  const reasoning = usage.completion_tokens_details?.reasoning_tokens
+  const nonCached = ProviderShared.subtractTokens(usage.prompt_tokens, ProviderShared.sumTokens(cached, cacheWrite))
  return new Usage({
-    inputTokens: input,
-    outputTokens: output,
+    inputTokens: usage.prompt_tokens,
+    outputTokens: usage.completion_tokens,
    nonCachedInputTokens: nonCached,
    cacheReadInputTokens: cached,
    cacheWriteInputTokens: cacheWrite,
    reasoningTokens: reasoning,
-    totalTokens: ProviderShared.totalTokens(input, output, usage.total_tokens ?? undefined),
+    totalTokens: ProviderShared.totalTokens(usage.prompt_tokens, usage.completion_tokens, usage.total_tokens),
    providerMetadata: { openai: usage },
  })
 }

-const toolIndexByID = (
-  tools: ParserState["tools"],
-  pendingTools: ParserState["pendingTools"],
-  id: string | undefined,
-) => {
-  if (!id) return undefined
-  const entry = Object.entries({ ...pendingTools, ...tools }).find(([, tool]) => tool?.id === id)
-  return entry ? Number(entry[0]) : undefined
-}
-
 const reasoningDelta = (
  delta: Schema.Schema.Type<typeof OpenAIChatDelta> | null | undefined,
  configuredField?: string,
@@ -691,39 +657,25 @@ const step = (state: ParserState, event: OpenAIChatEvent) =>
    const events: LLMEvent[] = []
    const usage = mapUsage(event.usage) ?? state.usage
    const choice = event.choices?.[0]
-    const rawFinishReason = choice?.finish_reason
-    const finishReason =
-      rawFinishReason !== undefined && rawFinishReason !== null
-        ? { normalized: mapFinishReason(rawFinishReason), raw: choice?.native_finish_reason ?? rawFinishReason }
-        : state.finishReason
+    const finishReason = choice?.finish_reason
+      ? { normalized: mapFinishReason(choice.finish_reason), raw: choice.native_finish_reason ?? choice.finish_reason }
+      : state.finishReason
    const delta = choice?.delta
    const toolDeltas = delta?.tool_calls ?? []
    let tools = state.tools
    let pendingTools = state.pendingTools
-    let latestToolIndex = state.latestToolIndex
-    let nextToolIndex = state.nextToolIndex

    let lifecycle = state.lifecycle

    const reasoning = reasoningDelta(delta, state.reasoningField)
-    const hasLateContent =
-      Boolean(delta?.content) ||
-      reasoning !== undefined ||
-      (Array.isArray(delta?.reasoning_details) && delta.reasoning_details.length > 0) ||
-      toolDeltas.some((tool) => Boolean(tool.id) || Boolean(tool.function?.name) || Boolean(tool.function?.arguments))
-    if (state.finishReason !== undefined) {
-      if (hasLateContent)
-        return yield* ProviderShared.eventError(ADAPTER, "OpenAI Chat received content after the finish reason")
-      return [{ ...state, usage }, events] as const
-    }
-
-    const reasoningField = state.reasoningField ?? reasoning?.field
+    const reasoningField = state.reasoningField ?? (!state.lifecycle.text.has("text-0") ? reasoning?.field : undefined)
    const detailDelta = Array.isArray(delta?.reasoning_details) ? delta.reasoning_details : undefined
    if (detailDelta !== undefined) appendReasoningDetails(state.reasoningDetails, detailDelta)
    const reasoningDetailsObserved = state.reasoningDetailsObserved || detailDelta !== undefined
    const deltaMetadata = reasoningMetadata(reasoningField)
    const text = detailDelta?.length ? (detailText(detailDelta) ?? reasoning?.text) : reasoning?.text
-    if (text !== undefined) lifecycle = Lifecycle.reasoningDelta(lifecycle, events, "reasoning-0", text, deltaMetadata)
+    if (!state.lifecycle.text.has("text-0") && text !== undefined)
+      lifecycle = Lifecycle.reasoningDelta(lifecycle, events, "reasoning-0", text, deltaMetadata)
    else if (
      reasoningDetailsObserved &&
      !lifecycle.reasoning.has("reasoning-0") &&
@@ -742,36 +694,24 @@ const step = (state: ParserState, event: OpenAIChatEvent) =>
      lifecycle = Lifecycle.textDelta(lifecycle, events, "text-0", delta.content)
    }

-    // Compatible providers may omit indexes. Prefer durable identity, then use
-    // batch position for parallel deltas or the latest call for sparse chunks.
-    for (const [position, tool] of toolDeltas.entries()) {
-      const matched = toolIndexByID(tools, pendingTools, tool.id || undefined)
-      const fallback = toolDeltas.length > 1 ? position : (latestToolIndex ?? position)
-      const fallbackTool = tools[fallback] ?? pendingTools[fallback]
-      const index =
-        tool.index ?? matched ?? (tool.id && fallbackTool?.id && fallbackTool.id !== tool.id ? nextToolIndex : fallback)
-      const current = tools[index]
-      const pending = pendingTools[index]
+    for (const tool of toolDeltas) {
+      const current = tools[tool.index]
+      const pending = pendingTools[tool.index]
      const id = current?.id ?? pending?.id ?? (tool.id || undefined)
      const name = current?.name ?? pending?.name ?? (tool.function?.name || undefined)
      const text = `${pending?.input ?? ""}${tool.function?.arguments ?? ""}`
-      latestToolIndex = index
-      nextToolIndex = Math.max(nextToolIndex, index + 1)
      if (!current && (!id || !name)) {
-        pendingTools = {
-          ...pendingTools,
-          [index]: { id: id || undefined, name: name || undefined, input: text },
-        }
+        pendingTools = { ...pendingTools, [tool.index]: { id: id || undefined, name: name || undefined, input: text } }
        continue
      }
      if (pending) {
        pendingTools = { ...pendingTools }
-        delete pendingTools[index]
+        delete pendingTools[tool.index]
      }
      const result = ToolStream.appendOrStart(
        ADAPTER,
        tools,
-        index,
+        tool.index,
        { id: id || undefined, name: name || undefined, text },
        "OpenAI Chat tool call delta is missing id or name",
      )
@@ -803,8 +743,6 @@ const step = (state: ParserState, event: OpenAIChatEvent) =>
        reasoningDetails: state.reasoningDetails,
        reasoningDetailsObserved,
        reasoningEmitted,
-        latestToolIndex,
-        nextToolIndex,
      },
      events,
    ] as const
@@ -812,18 +750,14 @@ const step = (state: ParserState, event: OpenAIChatEvent) =>

 const finishEvents = (state: ParserState): ReadonlyArray<LLMEvent> => {
  const events: LLMEvent[] = []
-  const toolCallEvents =
-    state.finishReason === undefined && Object.keys(state.tools).length > 0
-      ? Effect.runSync(ToolStream.finishAll(ADAPTER, state.tools)).events
-      : state.toolCallEvents
-  const hasToolCalls = toolCallEvents.length > 0
+  const hasToolCalls = state.toolCallEvents.length > 0
  const reason = state.finishReason
    ? {
        ...state.finishReason,
        normalized:
          state.finishReason.normalized === "stop" && hasToolCalls ? "tool-calls" : state.finishReason.normalized,
      }
-    : { normalized: hasToolCalls ? ("tool-calls" as const) : ("unknown" as const) }
+    : undefined
  const metadata = reasoningMetadata(
    state.reasoningField,
    state.reasoningDetailsObserved ? state.reasoningDetails : undefined,
@@ -833,9 +767,9 @@ const finishEvents = (state: ParserState): ReadonlyArray<LLMEvent> => {
      ? Lifecycle.reasoningStart(state.lifecycle, events, "reasoning-0", reasoningMetadata(state.reasoningField))
      : state.lifecycle
  const ended = Lifecycle.reasoningEnd(started, events, "reasoning-0", metadata)
-  const lifecycle = toolCallEvents.length ? Lifecycle.stepStart(ended, events) : ended
-  events.push(...toolCallEvents)
-  Lifecycle.finish(lifecycle, events, { reason, usage: state.usage })
+  const lifecycle = state.toolCallEvents.length ? Lifecycle.stepStart(ended, events) : ended
+  events.push(...state.toolCallEvents)
+  if (reason) Lifecycle.finish(lifecycle, events, { reason, usage: state.usage })
  return events
 }

@@ -865,7 +799,6 @@ export const protocol = Protocol.make({
      reasoningDetails: [],
      reasoningDetailsObserved: false,
      reasoningEmitted: false,
-      nextToolIndex: 0,
    }),
    step,
    onHalt: finishEvents,
@@ -61,57 +61,37 @@ const emptyObjectSchema = (schema: Record<string, unknown>) =>
  (!isRecord(schema.properties) || Object.keys(schema.properties).length === 0) &&
  !schema.additionalProperties

-const projectNode = (schema: unknown, nested = false): Record<string, unknown> | undefined => {
+const projectNode = (schema: unknown): Record<string, unknown> | undefined => {
  if (!isRecord(schema)) return undefined
-  if (!nested && emptyObjectSchema(schema)) return undefined
-  const types = Array.isArray(schema.type) ? schema.type.filter((type) => type !== "null") : undefined
-  const anyOf = Array.isArray(schema.anyOf) ? schema.anyOf : undefined
-  const hasNullAnyOf = anyOf?.some((item) => isRecord(item) && item.type === "null") ?? false
-  const anyOfTypes = hasNullAnyOf ? anyOf?.filter((item) => !isRecord(item) || item.type !== "null") : anyOf
-  const flattenedAnyOf = hasNullAnyOf && anyOfTypes?.length === 1 ? projectNode(anyOfTypes[0], true) : undefined
-  const result = Object.fromEntries(
+  if (emptyObjectSchema(schema)) return undefined
+  return Object.fromEntries(
    [
      ["description", schema.description],
      ["required", schema.required],
      ["format", schema.format],
-      ["type", types ? (types.length === 0 ? "null" : undefined) : schema.type],
-      [
-        "nullable",
-        (Array.isArray(schema.type) && schema.type.includes("null") && types && types.length > 0) || hasNullAnyOf
-          ? true
-          : undefined,
-      ],
+      ["type", Array.isArray(schema.type) ? schema.type.filter((type) => type !== "null")[0] : schema.type],
+      ["nullable", Array.isArray(schema.type) && schema.type.includes("null") ? true : undefined],
      ["enum", schema.const !== undefined ? [schema.const] : schema.enum],
      [
        "properties",
        isRecord(schema.properties)
-          ? Object.fromEntries(Object.entries(schema.properties).map(([key, value]) => [key, projectNode(value, true)]))
+          ? Object.fromEntries(Object.entries(schema.properties).map(([key, value]) => [key, projectNode(value)]))
          : undefined,
      ],
      [
        "items",
        Array.isArray(schema.items)
-          ? schema.items.map((item) => projectNode(item, true))
+          ? schema.items.map(projectNode)
          : schema.items === undefined
            ? undefined
-            : projectNode(schema.items, true),
+            : projectNode(schema.items),
      ],
-      ["allOf", Array.isArray(schema.allOf) ? schema.allOf.map((item) => projectNode(item, true)) : undefined],
-      [
-        "anyOf",
-        anyOfTypes
-          ? hasNullAnyOf && anyOfTypes.length === 1
-            ? undefined
-            : anyOfTypes.map((item) => projectNode(item, true))
-          : types && types.length > 0
-            ? types.map((type) => ({ type }))
-            : undefined,
-      ],
-      ["oneOf", Array.isArray(schema.oneOf) ? schema.oneOf.map((item) => projectNode(item, true)) : undefined],
+      ["allOf", Array.isArray(schema.allOf) ? schema.allOf.map(projectNode) : undefined],
+      ["anyOf", Array.isArray(schema.anyOf) ? schema.anyOf.map(projectNode) : undefined],
+      ["oneOf", Array.isArray(schema.oneOf) ? schema.oneOf.map(projectNode) : undefined],
      ["minLength", schema.minLength],
    ].filter((entry) => entry[1] !== undefined),
  )
-  return flattenedAnyOf ? { ...result, ...flattenedAnyOf } : result
 }

 export const convert = (schema: unknown) => projectNode(sanitizeNode(schema))
@@ -33,6 +33,7 @@ export const ServiceTierSchema = Schema.Literals(ServiceTiers)
 export interface Resolved {
  readonly instructions?: string
  readonly store?: boolean
+  readonly promptCacheKey?: string
  readonly reasoningEffort?: string
  readonly reasoningSummary?: "auto" | "concise" | "detailed"
  readonly include?: ReadonlyArray<ResponseIncludable>
@@ -49,6 +50,7 @@ export const resolve = (request: LLMRequest): Resolved => {
  return {
    instructions: typeof input?.instructions === "string" ? input.instructions : undefined,
    store: typeof input?.store === "boolean" ? input.store : undefined,
+    promptCacheKey: typeof input?.promptCacheKey === "string" ? input.promptCacheKey : undefined,
    reasoningEffort: typeof input?.reasoningEffort === "string" ? input.reasoningEffort : undefined,
    reasoningSummary:
      reasoningSummary === "auto" || reasoningSummary === "concise" || reasoningSummary === "detailed"
@@ -5,7 +5,6 @@ import type { ProviderPackage } from "../provider-package"
 import { ProviderID, type ModelID } from "../schema"
 import * as OpenAIChat from "../protocols/openai-chat"
 import * as OpenAIResponses from "../protocols/openai-responses"
-import { ProviderShared } from "../protocols/shared"
 import { withOpenAIOptions, type OpenAIProviderOptionsInput } from "./openai-options"

 export const id = ProviderID.make("azure")
@@ -20,7 +19,7 @@ export type LanguageModelOptions = AzureURL &
  ProviderAuthOption<"optional"> & {
    readonly apiVersion?: string
    readonly queryParams?: Record<string, string>
-    readonly useDeploymentBasedUrls?: boolean
+    readonly useCompletionUrls?: boolean
    readonly providerOptions?: OpenAIProviderOptionsInput
  }
 export type Config = LanguageModelOptions
@@ -30,22 +29,27 @@ export type Settings = ProviderPackage.Settings &
    readonly apiKey?: string
    readonly apiVersion?: string
    readonly queryParams?: Readonly<Record<string, string>>
-    readonly useDeploymentBasedUrls?: boolean
    readonly providerOptions?: OpenAIProviderOptionsInput
  }

-const resourceBaseURL = (resourceName: string) => `https://${resourceName.trim()}.openai.azure.com/openai`
+const resourceBaseURL = (resourceName: string) => `https://${resourceName.trim()}.openai.azure.com/openai/v1`

 const responsesRoute = OpenAIResponses.route.with({
  id: "azure-openai-responses",
  provider: id,
  auth: routeAuth,
+  endpoint: {
+    query: { "api-version": "v1" },
+  },
 })

 const chatRoute = OpenAIChat.route.with({
  id: "azure-openai-chat",
  provider: id,
  auth: routeAuth,
+  endpoint: {
+    query: { "api-version": "v1" },
+  },
 })

 export const routes = [responsesRoute, chatRoute]
@@ -55,7 +59,7 @@ const defaults = (input: Config) => {
    apiKey: _,
    apiVersion: _apiVersion,
    resourceName: _resourceName,
-    useDeploymentBasedUrls: _useDeploymentBasedUrls,
+    useCompletionUrls: _useCompletionUrls,
    baseURL: _baseURL,
    queryParams: _queryParams,
    ...rest
@@ -76,39 +80,37 @@ const auth = (input: Config) => {
  )
 }

-const configuredRoute = <Body, Prepared>(route: RouteDef<Body, Prepared>, input: Config, modelID: string | ModelID) =>
+const configuredRoute = <Body, Prepared>(route: RouteDef<Body, Prepared>, input: Config) =>
  route.with({
    auth: auth(input),
-    endpoint: endpoint(input, modelID),
+    endpoint: {
+      // AtLeastOne guarantees at least one is set; baseURL wins if both are.
+      baseURL: input.baseURL ?? resourceBaseURL(input.resourceName!),
+      query: {
+        ...(input.apiVersion ? { "api-version": input.apiVersion } : {}),
+        ...input.queryParams,
+      },
+    },
  })

-function endpoint(input: Config, modelID: string | ModelID) {
-  const baseURL = ProviderShared.trimBaseUrl(input.baseURL ?? resourceBaseURL(input.resourceName!))
-  const query = { "api-version": input.apiVersion ?? "v1", ...input.queryParams }
-
-  if (input.useDeploymentBasedUrls) return { baseURL: `${baseURL}/deployments/${modelID}`, query }
-  if (input.baseURL !== undefined && !new URL(input.baseURL).hostname.endsWith(".openai.azure.com")) {
-    return { baseURL, query: input.queryParams }
-  }
-  return { baseURL: `${baseURL}/v1`, query }
-}
-
 export const configure = (input: Config) => {
+  const configuredResponsesRoute = configuredRoute(responsesRoute, input)
+  const configuredChatRoute = configuredRoute(chatRoute, input)
  const modelDefaults = defaults(input)

  const responses = (modelID: string | ModelID) =>
-    configuredRoute(responsesRoute, input, modelID)
+    configuredResponsesRoute
      .with(withOpenAIOptions(modelID, modelDefaults))
      .model<OpenAIProviderOptionsInput>({ id: modelID })

  const chat = (modelID: string | ModelID) =>
-    configuredRoute(chatRoute, input, modelID)
+    configuredChatRoute
      .with(withOpenAIOptions(modelID, modelDefaults))
      .model<OpenAIProviderOptionsInput>({ id: modelID })

  return {
    id,
-    model: responses,
+    model: (modelID: string | ModelID) => (input.useCompletionUrls === true ? chat(modelID) : responses(modelID)),
    responses,
    chat,
    configure,
@@ -129,7 +131,6 @@ const config = (settings: Settings): Config => {
    limits: settings.limits,
    providerOptions: settings.providerOptions,
    queryParams: settings.queryParams === undefined ? undefined : { ...settings.queryParams },
-    useDeploymentBasedUrls: settings.useDeploymentBasedUrls,
  }
  if (settings.baseURL !== undefined) return { ...common, baseURL: settings.baseURL }
  if (settings.resourceName !== undefined) return { ...common, resourceName: settings.resourceName }
@@ -0,0 +1,71 @@
+import { AuthOptions, type ProviderAuthOption } from "../route/auth-options"
+import type { RouteDefaultsInput } from "../route/client"
+import { ProviderID, type ModelID } from "../schema"
+import * as OpenAIChat from "../protocols/openai-chat"
+import * as OpenAIResponses from "../protocols/openai-responses"
+import { withOpenAIOptions, type OpenAIProviderOptionsInput } from "./openai-options"
+
+export const id = ProviderID.make("github-copilot")
+
+// GitHub Copilot has no canonical public URL — callers (opencode, etc.) must
+// supply `baseURL` explicitly.
+export type LanguageModelOptions = Omit<RouteDefaultsInput, "providerOptions"> &
+  ProviderAuthOption<"optional"> & {
+    readonly baseURL: string
+    readonly endpoint?: "chat" | "responses"
+    readonly providerOptions?: OpenAIProviderOptionsInput
+  }
+
+export const shouldUseResponsesApi = (modelID: string | ModelID, endpoint?: LanguageModelOptions["endpoint"]) => {
+  if (endpoint) return endpoint === "responses"
+  const model = String(modelID)
+  const match = /^gpt-(\d+)/.exec(model)
+  if (!match) return false
+  return Number(match[1]) >= 5 && !model.startsWith("gpt-5-mini")
+}
+
+export const routes = [OpenAIResponses.route, OpenAIChat.route]
+
+const chatRoute = OpenAIChat.route.with({ provider: id })
+const responsesRoute = OpenAIResponses.route.with({ provider: id })
+
+const defaults = (options: LanguageModelOptions) => {
+  const { apiKey: _, auth: _auth, baseURL: _baseURL, endpoint: _endpoint, ...rest } = options
+  return rest
+}
+
+const configuredResponsesRoute = (options: LanguageModelOptions) =>
+  responsesRoute.with({
+    endpoint: { baseURL: options.baseURL },
+    auth: AuthOptions.bearer(options, []),
+  })
+
+const configuredChatRoute = (options: LanguageModelOptions) =>
+  chatRoute.with({
+    endpoint: { baseURL: options.baseURL },
+    auth: AuthOptions.bearer(options, []),
+  })
+
+export const configure = (options: LanguageModelOptions) => {
+  const responsesRoute = configuredResponsesRoute(options)
+  const chatRoute = configuredChatRoute(options)
+  const responses = (modelID: string | ModelID) =>
+    responsesRoute
+      .with(withOpenAIOptions(modelID, defaults(options)))
+      .model<OpenAIProviderOptionsInput>({ id: modelID })
+  const chat = (modelID: string | ModelID) =>
+    chatRoute.with(withOpenAIOptions(modelID, defaults(options))).model<OpenAIProviderOptionsInput>({ id: modelID })
+  return {
+    id,
+    model: (modelID: string | ModelID) =>
+      shouldUseResponsesApi(modelID, options.endpoint) ? responses(modelID) : chat(modelID),
+    responses,
+    chat,
+    configure,
+  }
+}
+
+export const provider = {
+  id,
+  configure,
+}
@@ -15,7 +15,8 @@ export type AnthropicThinkingInput = AnthropicMessages.ThinkingInput

 const VERSION = "vertex-2023-10-16" as const

-export const id = ProviderID.make("google-vertex")
+// models.dev uses this provider id even though the API contract is Anthropic Messages.
+export const id = ProviderID.make("google-vertex-anthropic")

 export type Config = RouteDefaultsInput &
  GoogleVertexShared.OAuthOptions & {
@@ -5,6 +5,7 @@ export * as AmazonBedrockMantle from "./amazon-bedrock-mantle"
 export * as Azure from "./azure"
 export * as Cloudflare from "./cloudflare"
 export { CloudflareAIGateway, CloudflareWorkersAI } from "./cloudflare"
+export * as GitHubCopilot from "./github-copilot"
 export * as Google from "./google"
 export * as GoogleVertex from "./google-vertex"
 export * as GoogleVertexChat from "./google-vertex-chat"
@@ -5,6 +5,7 @@ export interface OpenResponsesOptionsInput {
  readonly [key: string]: unknown
  readonly instructions?: string
  readonly store?: boolean
+  readonly promptCacheKey?: string
  readonly reasoningEffort?: ReasoningEffort
  readonly reasoningSummary?: "auto" | "concise" | "detailed"
  readonly include?: ReadonlyArray<ResponseIncludable>
@@ -17,6 +17,7 @@ const openAIProviderOptions = (options: OpenAIOptionsInput | undefined): Provide
  const openai = Object.fromEntries(
    definedEntries({
      store: options?.store,
+      promptCacheKey: options?.promptCacheKey,
      reasoningEffort: options?.reasoningEffort,
      reasoningSummary: options?.reasoningSummary,
      include: options?.include,
@@ -55,6 +55,7 @@ export interface OpenRouterOptions {
  readonly debug?: Readonly<{ echo_upstream_body?: boolean }>
  readonly models?: ReadonlyArray<string>
  readonly plugins?: ReadonlyArray<OpenRouterPlugin>
+  readonly promptCacheKey?: string
  readonly provider?: OpenRouterProviderRouting
  readonly reasoning?: Readonly<{
    enabled?: boolean
@@ -121,7 +122,6 @@ export const protocol = Protocol.make({
            ...body,
            messages,
            ...bodyOptions(request.providerOptions?.openrouter),
-            ...(request.promptCacheKey ? { prompt_cache_key: request.promptCacheKey } : {}),
          } as OpenRouterBody
        }),
      ),
@@ -161,6 +161,7 @@ const bodyOptions = (input: unknown) => {
    ...(isRecord(debug) ? { debug } : {}),
    ...(typeof user === "string" ? { user } : {}),
    ...(isRecord(reasoning) ? { reasoning } : {}),
+    ...(typeof promptCacheKey === "string" ? { prompt_cache_key: promptCacheKey } : {}),
  }
 }

@@ -47,8 +47,6 @@ const chatRoute = Route.make({
  protocol: OpenAIChat.protocol,
  endpoint: Endpoint.path("/chat/completions", { baseURL: OpenAICompatibleProfiles.profiles.xai.baseURL }),
  transport: OpenAICompatibleChat.route.transport,
-  headers: ({ request }): Record<string, string> =>
-    request.promptCacheKey ? { "x-grok-conv-id": request.promptCacheKey } : {},
 })

 export const routes = [responsesRoute, chatRoute]
@@ -5,7 +5,7 @@ import { Endpoint, type EndpointPatch } from "./endpoint"
 import { RequestExecutor } from "./executor"
 import { Framing } from "./framing"
 import { HttpTransport } from "./transport"
-import type { HttpMiddleware, Transport, TransportRuntime } from "./transport"
+import type { HttpRequestTransform, Transport, TransportRuntime } from "./transport"
 import { WebSocketExecutor } from "./transport"
 import type { Protocol } from "./protocol"
 import { applyCachePolicy } from "../cache-policy"
@@ -20,7 +20,6 @@ import {
  LanguageModel,
  LanguageModelLimits,
  LLMEvent,
-  InvalidProviderOutputReason,
  ProviderID,
  mergeGenerationOptions,
  mergeHttpOptions,
@@ -156,7 +155,7 @@ export interface Interface {
 }

 export interface StreamOptions {
-  readonly http?: HttpMiddleware
+  readonly transform?: HttpRequestTransform
 }

 export interface StreamMethod {
@@ -232,17 +231,6 @@ const streamError = (route: string, message: string, cause: Cause.Cause<unknown>
  return ProviderShared.eventError(route, message, Cause.pretty(cause))
 }

-const incompleteStreamError = (route: string) =>
-  new AIError({
-    module: "LLMClient",
-    method: "stream",
-    reason: new InvalidProviderOutputReason({
-      classification: "incomplete-stream",
-      message: "The provider response ended unexpectedly.",
-      route,
-    }),
-  })
-
 const requireTerminalEvent = (route: string) => (events: Stream.Stream<LLMEvent, AIError>) =>
  Stream.suspend(() => {
    let terminal = false
@@ -255,7 +243,13 @@ const requireTerminalEvent = (route: string) => (events: Stream.Stream<LLMEvent,
        if (LLMEvent.is.finish(event) || LLMEvent.is.providerError(event)) terminal = true
        return Effect.succeed(event)
      }),
-      Stream.onEnd(Effect.suspend(() => (terminal ? Effect.void : Effect.fail(incompleteStreamError(route))))),
+      Stream.onEnd(
+        Effect.suspend(() =>
+          terminal
+            ? Effect.void
+            : Effect.fail(ProviderShared.eventError(route, "Provider stream ended without a terminal finish event")),
+        ),
+      ),
    )
  })

@@ -313,7 +307,7 @@ function makeFromTransport<Body, Prepared, Frame, Event, State>(
          auth: routeInput.auth ?? Auth.none,
          encodeBody,
          headers: routeInput.headers,
-          middleware: options?.http,
+          transform: options?.transform,
        }),
      streamPrepared: (prepared: Prepared, request: LLMRequest, runtime: TransportRuntime) => {
        const route = `${request.model.provider}/${request.model.route.id}`
@@ -422,21 +416,24 @@ const generateWith = (stream: Interface["stream"]) =>
    const state = yield* stream(request, options).pipe(Stream.runFold(LLMResponse.empty, LLMResponse.reduce))
    const response = LLMResponse.complete(state)
    if (response) return response
-    return yield* incompleteStreamError(`${request.model.provider}/${request.model.route.id}`)
+    return yield* ProviderShared.eventError(
+      `${request.model.provider}/${request.model.route.id}`,
+      "Provider stream ended without a terminal finish event",
+    )
  })

-export function stream(request: LLMRequest, options?: StreamOptions): Stream.Stream<LLMEvent, AIError, Service> {
+export function stream(request: LLMRequest, options?: StreamOptions): Stream.Stream<LLMEvent, AIError> {
  return Stream.unwrap(
    Effect.gen(function* () {
      return (yield* Service).stream(request, options)
    }),
-  )
+  ) as Stream.Stream<LLMEvent, AIError>
 }

-export function generate(request: LLMRequest, options?: StreamOptions): Effect.Effect<LLMResponse, AIError, Service> {
+export function generate(request: LLMRequest, options?: StreamOptions): Effect.Effect<LLMResponse, AIError> {
  return Effect.gen(function* () {
    return yield* (yield* Service).generate(request, options)
-  })
+  }) as Effect.Effect<LLMResponse, AIError>
 }

 export const streamRequest = (request: LLMRequest, options?: StreamOptions) =>
@@ -1,4 +1,4 @@
-import { Cause, Context, Effect, Layer, Option, Schema } from "effect"
+import { Cause, Context, Effect, Layer } from "effect"
 import {
  FetchHttpClient,
  Headers,
@@ -20,18 +20,9 @@ import { classifyProviderFailure } from "../provider-error"
 export interface Interface {
  readonly execute: (
    request: HttpClientRequest.HttpClientRequest,
-    middleware?: HttpMiddleware,
  ) => Effect.Effect<HttpClientResponse.HttpClientResponse, AIError>
 }

-export type HttpHandler = (
-  request: HttpClientRequest.HttpClientRequest,
-) => Effect.Effect<HttpClientResponse.HttpClientResponse, Error>
-export type HttpMiddleware = (
-  request: HttpClientRequest.HttpClientRequest,
-  handler: HttpHandler,
-) => Effect.Effect<HttpClientResponse.HttpClientResponse, Error>
-
 export class Service extends Context.Service<Service, Interface>()("@opencode/AI/RequestExecutor") {}

 const BODY_LIMIT = 16_384
@@ -198,20 +189,8 @@ const responseBody = (body: string | void, request: HttpClientRequest.HttpClient
  return { body: redacted.slice(0, BODY_LIMIT), bodyTruncated: true }
 }

-const decodeProviderBody = Schema.decodeUnknownOption(
-  Schema.fromJsonString(
-    Schema.Struct({
-      message: Schema.optionalKey(Schema.String),
-      error: Schema.optionalKey(Schema.Struct({ message: Schema.optionalKey(Schema.String) })),
-    }),
-  ),
-)
-
 const providerMessage = (status: number, body: { readonly body?: string }) => {
-  if (body.body && body.body.length <= 500) {
-    const decoded = Option.getOrUndefined(decodeProviderBody(body.body))
-    return `Provider request failed with HTTP ${status}: ${decoded?.error?.message ?? decoded?.message ?? body.body}`
-  }
+  if (body.body && body.body.length <= 500) return `Provider request failed with HTTP ${status}: ${body.body}`
  return `Provider request failed with HTTP ${status}`
 }

@@ -282,7 +261,7 @@ const toHttpError = (redactedNames: ReadonlyArray<string | RegExp>) => (error: u
    return transportError({ message: error.message, kind: "Timeout" })
  }
  if (!HttpClientError.isHttpClientError(error)) {
-    return transportError({ message: error instanceof Error ? error.message : "HTTP transport failed" })
+    return transportError({ message: "HTTP transport failed" })
  }
  const request = "request" in error ? error.request : undefined
  if (error.reason._tag === "TransportError") {
@@ -303,20 +282,12 @@ export const layer: Layer.Layer<Service, never, HttpClient.HttpClient> = Layer.e
  Service,
  Effect.gen(function* () {
    const http = yield* HttpClient.HttpClient
-    const executeOnce = (request: HttpClientRequest.HttpClientRequest, middleware?: HttpMiddleware) =>
+    const executeOnce = (request: HttpClientRequest.HttpClientRequest) =>
      Effect.gen(function* () {
        const redactedNames = yield* Headers.CurrentRedactedNames
-        if (!middleware)
-          return yield* http
-            .execute(request)
-            .pipe(Effect.mapError(toHttpError(redactedNames)), Effect.flatMap(statusError(request, redactedNames)))
-
-        const response = yield* middleware(request, (input) =>
-          http
-            .execute(input)
-            .pipe(Effect.mapError((cause) => (cause instanceof Error ? cause : new Error(String(cause))))),
-        ).pipe(Effect.mapError(toHttpError(redactedNames)))
-        return yield* statusError(response.request, redactedNames)(response)
+        return yield* http
+          .execute(request)
+          .pipe(Effect.mapError(toHttpError(redactedNames)), Effect.flatMap(statusError(request, redactedNames)))
      })
    return Service.of({
      execute: executeOnce,
@@ -23,4 +23,4 @@ export type { ApiKeyMode, AuthOverride, ProviderAuthOption } from "./auth-option
 export type { Definition as EndpointFn, EndpointInput } from "./endpoint"
 export type { Definition as FramingDef } from "./framing"
 export type { Protocol as ProtocolDef } from "./protocol"
-export type { HttpHandler, HttpMiddleware, Transport as TransportDef, TransportRuntime } from "./transport"
+export type { HttpRequest, HttpRequestTransform, Transport as TransportDef, TransportRuntime } from "./transport"
@@ -3,7 +3,7 @@ import { Headers, HttpClientRequest } from "effect/unstable/http"
 import { Auth } from "../auth"
 import { render as renderEndpoint } from "../endpoint"
 import { Framing } from "../framing"
-import type { HttpMiddleware, Transport, TransportPrepareInput } from "./index"
+import type { Transport, TransportPrepareInput } from "./index"
 import * as ProviderShared from "../../protocols/shared"
 import { mergeJsonRecords, type LLMRequest } from "../../schema"

@@ -19,7 +19,6 @@ export interface JsonRequestParts<Body = unknown> {
 export interface HttpPrepared<Frame> {
  readonly request: HttpClientRequest.HttpClientRequest
  readonly framing: Framing.Definition<Frame>
-  readonly middleware?: HttpMiddleware
 }

 const applyQuery = (url: string, query: Record<string, string> | undefined) => {
@@ -75,21 +74,21 @@ export const httpJson = <Body, Frame>(input: HttpJsonInput<Body, Frame>): HttpJs
  prepare: (prepareInput) =>
    Effect.gen(function* () {
      const parts = yield* jsonRequestParts({ ...prepareInput })
-      const request = ProviderShared.jsonPost({
-        url: parts.url,
-        body: parts.bodyText,
-        headers: parts.headers,
-      })
+      const request = { url: parts.url, method: "POST", headers: { ...parts.headers }, body: parts.bodyText }
+      yield* (prepareInput.transform?.(request) ?? Effect.void)
      return {
-        request,
+        request: ProviderShared.jsonPost({
+          url: request.url,
+          body: request.body ?? "",
+          headers: Headers.fromInput(request.headers),
+        }),
        framing: input.framing,
-        middleware: prepareInput.middleware,
      }
    }),
  frames: (prepared, request, runtime) =>
    Stream.unwrap(
      runtime.http
-        .execute(prepared.request, prepared.middleware)
+        .execute(prepared.request)
        .pipe(
          Effect.map((response) =>
            prepared.framing.frame(
@@ -1,7 +1,7 @@
 import type { Effect, Stream } from "effect"
 import { Endpoint } from "../endpoint"
 import { Auth } from "../auth"
-import type { HttpMiddleware, Interface as RequestExecutorInterface } from "../executor"
+import type { Interface as RequestExecutorInterface } from "../executor"
 import type { Interface as WebSocketExecutorInterface } from "./websocket"
 import type { AIError, LLMRequest } from "../../schema"

@@ -10,6 +10,15 @@ export interface TransportRuntime {
  readonly webSocket?: WebSocketExecutorInterface
 }

+export interface HttpRequest {
+  url: string
+  readonly method: string
+  headers: Record<string, string>
+  body: string | undefined
+}
+
+export type HttpRequestTransform = (request: HttpRequest) => Effect.Effect<void>
+
 export interface Transport<Body, Prepared, Frame> {
  readonly id: string
  readonly prepare: (input: TransportPrepareInput<Body>) => Effect.Effect<Prepared, AIError>
@@ -23,9 +32,8 @@ export interface TransportPrepareInput<Body> {
  readonly auth: Auth.Definition
  readonly encodeBody: (body: Body) => string
  readonly headers?: (input: { readonly request: LLMRequest }) => Record<string, string>
-  readonly middleware?: HttpMiddleware
+  readonly transform?: HttpRequestTransform
 }

 export * as HttpTransport from "./http"
-export type { HttpHandler, HttpMiddleware } from "../executor"
 export { WebSocketExecutor, WebSocketTransport } from "./websocket"
@@ -105,7 +105,6 @@ export class InvalidProviderOutputReason extends Schema.Class<InvalidProviderOut
 )({
  _tag: Schema.tag("InvalidProviderOutput"),
  message: Schema.String,
-  classification: Schema.optional(Schema.Literals(["incomplete-stream"])),
  route: Schema.optional(Schema.String),
  raw: Schema.optional(Schema.String),
  providerMetadata: Schema.optional(ProviderMetadata),
@@ -45,34 +45,35 @@ const isToolResultValue = (value: unknown): value is ToolResultValue =>
  (value.type === "text" || value.type === "json" || value.type === "error" || value.type === "content") &&
  "value" in value

-const toolResultValueSchema = Schema.Union([
-  Schema.Struct({
-    type: Schema.Literal("json"),
-    value: Schema.Unknown,
-  }),
-  Schema.Struct({
-    type: Schema.Literal("text"),
-    value: Schema.Unknown,
-  }),
-  Schema.Struct({
-    type: Schema.Literal("error"),
-    value: Schema.Unknown,
-  }),
-  Schema.Struct({
-    type: Schema.Literal("content"),
-    value: Schema.Array(Tool.Content),
-  }),
-]).annotate({ identifier: "LLM.ToolResult" })
-export type ToolResultValue = Schema.Schema.Type<typeof toolResultValueSchema>
-
-export const ToolResultValue = Object.assign(toolResultValueSchema, {
-  is: isToolResultValue,
-  make: (value: unknown, type: ToolResultValue["type"] = "json"): ToolResultValue => {
-    if (isToolResultValue(value)) return value
-    if (type === "content") return { type, value: Array.isArray(value) ? value : [] }
-    return { type, value }
+export const ToolResultValue = Object.assign(
+  Schema.Union([
+    Schema.Struct({
+      type: Schema.Literal("json"),
+      value: Schema.Unknown,
+    }),
+    Schema.Struct({
+      type: Schema.Literal("text"),
+      value: Schema.Unknown,
+    }),
+    Schema.Struct({
+      type: Schema.Literal("error"),
+      value: Schema.Unknown,
+    }),
+    Schema.Struct({
+      type: Schema.Literal("content"),
+      value: Schema.Array(Tool.Content),
+    }),
+  ]).annotate({ identifier: "LLM.ToolResult" }),
+  {
+    is: isToolResultValue,
+    make: (value: unknown, type: ToolResultValue["type"] = "json"): ToolResultValue => {
+      if (isToolResultValue(value)) return value
+      if (type === "content") return { type, value: Array.isArray(value) ? value : [] }
+      return { type, value }
+    },
  },
-})
+)
+export type ToolResultValue = Schema.Schema.Type<typeof ToolResultValue>

 export interface ToolOutput {
  readonly structured: unknown
@@ -271,8 +272,6 @@ export class LLMRequest extends Schema.Class<LLMRequest>("LLM.Request")({
  providerOptions: Schema.optional(ProviderOptions),
  http: Schema.optional(HttpOptions),
  cache: Schema.optional(CachePolicy),
-  // Stable cache affinity for protocols that support provider-managed prompt caching.
-  promptCacheKey: Schema.optional(Schema.String),
  metadata: Schema.optional(Schema.Record(Schema.String, Schema.Unknown)),
 }) {}

@@ -290,7 +289,6 @@ export namespace LLMRequest {
    providerOptions: request.providerOptions,
    http: request.http,
    cache: request.cache,
-    promptCacheKey: request.promptCacheKey,
    metadata: request.metadata,
  })

@@ -178,7 +178,6 @@ export class LanguageModelCompatibility extends Schema.Class<LanguageModelCompat
  toolSchema: Schema.optional(LanguageModelToolSchemaCompatibility),
  reasoningField: Schema.optional(Schema.String),
  maxTokensField: Schema.optional(LanguageModelMaxTokensFieldCompatibility),
-  requireFinishReason: Schema.optional(Schema.Boolean),
 }) {}

 export namespace LanguageModelCompatibility {
@@ -1,6 +1,10 @@
 import { Effect, JsonSchema, Schema } from "effect"
 import { Tool } from "@opencode-ai/schema/tool"
-import type { ToolCallPart, ToolDefinition as ToolDefinitionClass, ToolOutput as ToolOutputType } from "./schema"
+import type {
+  ToolCallPart,
+  ToolDefinition as ToolDefinitionClass,
+  ToolOutput as ToolOutputType,
+} from "./schema"
 import { ToolDefinition, ToolFailure, ToolOutput } from "./schema"

 /**
@@ -20,7 +24,7 @@ export type ToolExecute<Parameters extends ToolSchema<any>, Success extends Tool
 ) => Effect.Effect<Schema.Schema.Type<Success>, ToolFailure>

 export interface ToolModelOutputInput<Parameters, Output> {
-  readonly id: ToolCallPart["id"]
+  readonly callID: ToolCallPart["id"]
  readonly parameters: Parameters
  readonly output: Output
 }
@@ -55,7 +59,7 @@ export interface Definition<Parameters extends ToolSchema<any>, Success extends
  /** @internal */
  readonly _project: (
    parameters: Schema.Schema.Type<Parameters>,
-    id: ToolCallPart["id"],
+    callID: ToolCallPart["id"],
    output: unknown,
  ) => ToolOutputType
  /** @internal */
@@ -169,8 +173,8 @@ export function make(config: TypedToolConfig | DynamicToolConfig): AnyTool {
      toStructuredOutput: config.toStructuredOutput,
      _decode: Effect.succeed,
      _encode: Effect.succeed,
-      _project: (parameters, id, output) =>
-        project(config.toModelOutput, config.toStructuredOutput, parameters, id, output),
+      _project: (parameters, callID, output) =>
+        project(config.toModelOutput, config.toStructuredOutput, parameters, callID, output),
      _legacyResult: config.toModelOutput === undefined && config.toStructuredOutput === undefined,
      _definition: new ToolDefinition({
        name: "",
@@ -189,8 +193,8 @@ export function make(config: TypedToolConfig | DynamicToolConfig): AnyTool {
    toStructuredOutput: config.toStructuredOutput,
    _decode: Schema.decodeUnknownEffect(config.parameters),
    _encode: Schema.encodeEffect(config.success),
-    _project: (parameters, id, output) =>
-      project(config.toModelOutput, config.toStructuredOutput, parameters, id, output),
+    _project: (parameters, callID, output) =>
+      project(config.toModelOutput, config.toStructuredOutput, parameters, callID, output),
    _legacyResult: false,
    _definition: new ToolDefinition({
      name: "",
@@ -235,12 +239,13 @@ const project = (
  toModelOutput: ((input: ToolModelOutputInput<any, any>) => ReadonlyArray<Tool.Content>) | undefined,
  toStructuredOutput: ((output: unknown) => unknown) | undefined,
  parameters: unknown,
-  id: ToolCallPart["id"],
+  callID: ToolCallPart["id"],
  output: unknown,
 ): ToolOutputType =>
  ToolOutput.make(
    toStructuredOutput?.(output) ?? output,
-    toModelOutput?.({ id, parameters, output }) ?? (typeof output === "string" ? [{ type: "text", text: output }] : []),
+    toModelOutput?.({ callID, parameters, output }) ??
+      (typeof output === "string" ? [{ type: "text", text: output }] : []),
  )

 export { ToolFailure }
@@ -133,8 +133,8 @@ describe("llm route", () => {
    Effect.gen(function* () {
      const error = yield* (yield* LLMClient.Service).stream(request).pipe(Stream.runDrain, Effect.flip)

-      expect(error.reason).toMatchObject({ _tag: "InvalidProviderOutput", classification: "incomplete-stream" })
-      expect(error.message).toContain("The provider response ended unexpectedly.")
+      expect(error.reason).toMatchObject({ _tag: "InvalidProviderOutput" })
+      expect(error.message).toContain("Provider stream ended without a terminal finish event")
    }),
  )

@@ -7,6 +7,7 @@ import * as Anthropic from "../src/providers/anthropic"
 import * as AnthropicCompatible from "../src/providers/anthropic-compatible"
 import * as Azure from "../src/providers/azure"
 import * as Cloudflare from "../src/providers/cloudflare"
+import * as GitHubCopilot from "../src/providers/github-copilot"
 import * as Google from "../src/providers/google"
 import * as GoogleVertex from "../src/providers/google-vertex"
 import * as GoogleVertexChat from "../src/providers/google-vertex-chat"
@@ -269,3 +270,7 @@ OpenAICompatible.deepseek.configure({ apiKey: "deepseek-key" }).model("deepseek-
 Cloudflare.CloudflareWorkersAI.configure({ accountId: "account", apiKey: "cf-key" }).model("@cf/meta/llama")
 // @ts-expect-error Cloudflare Workers AI model selectors only accept model ids.
 Cloudflare.CloudflareWorkersAI.configure({ accountId: "account", apiKey: "cf-key" }).model("@cf/meta/llama", {})
+
+GitHubCopilot.configure({ baseURL: "https://copilot.test", apiKey: "copilot-key" }).model("gpt-4.1")
+// @ts-expect-error GitHub Copilot model selectors only accept model ids.
+GitHubCopilot.configure({ baseURL: "https://copilot.test", apiKey: "copilot-key" }).model("gpt-4.1", {})
@@ -1,6 +1,6 @@
 import { describe, expect, test } from "bun:test"
-import { Effect, Ref, Schema } from "effect"
-import { HttpClientRequest, HttpClientResponse } from "effect/unstable/http"
+import { Effect, Schema } from "effect"
+import { HttpClientRequest } from "effect/unstable/http"
 import { LLM, mergeProviderOptions } from "../src"
 import { AnthropicMessages, OpenAIChat } from "../src/protocols"
 import { Auth, LLMClient } from "../src/route"
@@ -146,16 +146,12 @@ describe("request option precedence", () => {
        prompt: "Say hello.",
      }),
      {
-        http: (request, handler) =>
-          Effect.gen(function* () {
-            return yield* handler(
-              request.pipe(
-                HttpClientRequest.setUrl("https://proxy.test/v1/chat/completions"),
-                HttpClientRequest.setMethod("PUT"),
-                HttpClientRequest.setHeader("x-plugin", "transformed"),
-                HttpClientRequest.bodyText(JSON.stringify({ transformed: true }), "application/custom+json"),
-              ),
-            )
+        transform: (request) =>
+          Effect.sync(() => {
+            expect(request.headers.authorization).toBe("Bearer fresh-key")
+            request.url = "https://proxy.test/v1/chat/completions"
+            request.headers["x-plugin"] = "transformed"
+            request.body = JSON.stringify({ transformed: true })
          }),
      },
    ).pipe(
@@ -164,9 +160,7 @@ describe("request option precedence", () => {
          Effect.gen(function* () {
            const web = yield* HttpClientRequest.toWeb(input.request).pipe(Effect.orDie)
            expect(web.url).toBe("https://proxy.test/v1/chat/completions")
-            expect(web.method).toBe("PUT")
            expect(web.headers.get("x-plugin")).toBe("transformed")
-            expect(web.headers.get("content-type")).toBe("application/custom+json")
            expect(decodeJson(input.text)).toEqual({ transformed: true })
            return input.respond(sseEvents(deltaChunk({}, "stop")), {
              headers: { "content-type": "text/event-stream" },
@@ -177,82 +171,6 @@ describe("request option precedence", () => {
    ),
  )

-  it.effect("transforms the HTTP response before protocol decoding", () =>
-    Effect.gen(function* () {
-      const response = yield* LLMClient.generate(
-        LLM.request({
-          model: OpenAIChat.route
-            .with({ endpoint: { baseURL: "https://api.openai.test/v1/" }, auth: Auth.bearer("test") })
-            .model({ id: "gpt-4o-mini" }),
-          prompt: "Say hello.",
-        }),
-        {
-          http: (request, handler) =>
-            Effect.gen(function* () {
-              const response = yield* handler(request)
-              return HttpClientResponse.fromWeb(
-                response.request,
-                new Response((yield* response.text).replace("network", "hooked"), {
-                  status: response.status,
-                  headers: response.headers,
-                }),
-              )
-            }),
-        },
-      ).pipe(
-        Effect.provide(
-          dynamicResponse((input) =>
-            Effect.succeed(
-              input.respond(sseEvents(deltaChunk({ content: "network" }, "stop")), {
-                headers: { "content-type": "text/event-stream" },
-              }),
-            ),
-          ),
-        ),
-      )
-
-      expect(response.text).toBe("hooked")
-    }),
-  )
-
-  it.effect("can inspect an error response and retry the native request", () =>
-    Effect.gen(function* () {
-      const attempts = yield* Ref.make(0)
-      const response = yield* LLMClient.generate(
-        LLM.request({
-          model: OpenAIChat.route
-            .with({ endpoint: { baseURL: "https://api.openai.test/v1/" }, auth: Auth.bearer("stale") })
-            .model({ id: "gpt-4o-mini" }),
-          prompt: "Say hello.",
-        }),
-        {
-          http: (request, handler) =>
-            Effect.gen(function* () {
-              const response = yield* handler(request)
-              expect(response.status).toBe(401)
-              return yield* handler(HttpClientRequest.setHeader(request, "authorization", "Bearer refreshed"))
-            }),
-        },
-      ).pipe(
-        Effect.provide(
-          dynamicResponse((input) =>
-            Effect.gen(function* () {
-              yield* Ref.update(attempts, (value) => value + 1)
-              if (input.request.headers.authorization !== "Bearer refreshed")
-                return input.respond("unauthorized", { status: 401 })
-              return input.respond(sseEvents(deltaChunk({ content: "retried" }, "stop")), {
-                headers: { "content-type": "text/event-stream" },
-              })
-            }),
-          ),
-        ),
-      )
-
-      expect(response.text).toBe("retried")
-      expect(yield* Ref.get(attempts)).toBe(2)
-    }),
-  )
-
  it.effect("applies raw body overlays after protocol lowering", () =>
    LLMClient.generate(
      LLM.request({
@@ -67,18 +67,6 @@ const expectAIError = (error: unknown) => {
 const errorHttp = (error: AIError) => ("http" in error.reason ? error.reason.http : undefined)

 describe("RequestExecutor", () => {
-  it.effect("preserves middleware error messages", () =>
-    Effect.gen(function* () {
-      const executor = yield* RequestExecutor.Service
-      const error = yield* executor
-        .execute(request, () => Effect.fail(new Error("plugin rejected request")))
-        .pipe(Effect.flip)
-
-      expectAIError(error)
-      expect(error.reason.message).toBe("plugin rejected request")
-    }).pipe(Effect.provide(responsesLayer([]))),
-  )
-
  it.effect("classifies context overflow responses", () =>
    Effect.gen(function* () {
      const executor = yield* RequestExecutor.Service
@@ -10,6 +10,7 @@ import {
  OpenRouter,
  XAI,
 } from "@opencode-ai/ai/providers"
+import * as GitHubCopilot from "@opencode-ai/ai/providers/github-copilot"
 import {
  OpenAIChat,
  OpenAICompatibleChat,
@@ -59,6 +60,23 @@ describe("public exports", () => {
    expect(XAI.provider.chat).toBe(XAI.chat)
    expect(XAI.configure({ apiKey: "fixture" }).responses("grok-4.3").route.id).toBe("openai-responses")
    expect(XAI.configure({ apiKey: "fixture" }).chat("grok-4.3").route.id).toBe("openai-compatible-chat")
+    expect(
+      GitHubCopilot.configure({ baseURL: "https://api.githubcopilot.test", apiKey: "fixture" }).model,
+    ).toBeFunction()
+    expect(
+      GitHubCopilot.configure({
+        baseURL: "https://api.githubcopilot.test",
+        apiKey: "fixture",
+        endpoint: "responses",
+      }).model("mai-code-1-flash-picker").route.id,
+    ).toBe("openai-responses")
+    expect(
+      GitHubCopilot.configure({
+        baseURL: "https://api.githubcopilot.test",
+        apiKey: "fixture",
+        endpoint: "chat",
+      }).model("gpt-5").route.id,
+    ).toBe("openai-chat")
  })

  test("protocol barrels expose supported low-level routes", () => {
@@ -1,7 +1,13 @@
 {
  "version": 1,
  "metadata": {
-    "tags": ["prefix:anthropic-messages-cache", "provider:anthropic", "protocol:anthropic-messages", "cache", "tool"],
+    "tags": [
+      "prefix:anthropic-messages-cache",
+      "provider:anthropic",
+      "protocol:anthropic-messages",
+      "cache",
+      "tool"
+    ],
    "name": "anthropic-messages-cache/keeps-a-long-tool-turn-inside-the-cache-lookback",
    "recordedAt": "2026-07-24T16:22:29.494Z"
  },
@@ -1,7 +1,12 @@
 {
  "version": 1,
  "metadata": {
-    "tags": ["prefix:bedrock-converse-cache", "provider:amazon-bedrock", "protocol:bedrock-converse", "cache"],
+    "tags": [
+      "prefix:bedrock-converse-cache",
+      "provider:amazon-bedrock",
+      "protocol:bedrock-converse",
+      "cache"
+    ],
    "name": "bedrock-converse-cache/writes-then-reads-cachepoint-on-identical-second-call",
    "recordedAt": "2026-07-23T02:29:10.955Z"
  },
@@ -1,7 +1,11 @@
 {
  "version": 1,
  "metadata": {
-    "tags": ["prefix:google-images", "provider:google", "protocol:google-images"],
+    "tags": [
+      "prefix:google-images",
+      "provider:google",
+      "protocol:google-images"
+    ],
    "name": "google-images/generates-an-image",
    "recordedAt": "2026-07-19T16:05:51.868Z"
  },
@@ -1,7 +1,11 @@
 {
  "version": 1,
  "metadata": {
-    "tags": ["prefix:openai-images", "provider:openai", "protocol:openai-images"],
+    "tags": [
+      "prefix:openai-images",
+      "provider:openai",
+      "protocol:openai-images"
+    ],
    "name": "openai-images/generates-an-image",
    "recordedAt": "2026-07-19T14:41:43.188Z"
  },
@@ -1,7 +1,11 @@
 {
  "version": 1,
  "metadata": {
-    "tags": ["prefix:openai-responses-images", "provider:openai", "protocol:openai-responses"],
+    "tags": [
+      "prefix:openai-responses-images",
+      "provider:openai",
+      "protocol:openai-responses"
+    ],
    "name": "openai-responses-images/generates-and-edits-an-image-with-the-hosted-tool",
    "recordedAt": "2026-07-19T14:57:16.284Z"
  },
@@ -2,7 +2,12 @@
  "version": 1,
  "metadata": {
    "model": "anthropic/claude-sonnet-4.6",
-    "tags": ["prefix:openai-compatible-chat", "provider:openrouter", "protocol:openai-chat", "reasoning"],
+    "tags": [
+      "prefix:openai-compatible-chat",
+      "provider:openrouter",
+      "protocol:openai-chat",
+      "reasoning"
+    ],
    "name": "openrouter-reasoning",
    "recordedAt": "2026-07-18T11:28:39.267Z"
  },
@@ -1,7 +1,14 @@
 {
  "version": 1,
  "metadata": {
-    "tags": ["prefix:pdf", "pdf", "provider:anthropic", "protocol:anthropic-messages", "tool", "tool-result"],
+    "tags": [
+      "prefix:pdf",
+      "pdf",
+      "provider:anthropic",
+      "protocol:anthropic-messages",
+      "tool",
+      "tool-result"
+    ],
    "name": "pdf/anthropic-tool-result",
    "recordedAt": "2026-07-22T18:15:39.002Z"
  },
@@ -1,7 +1,13 @@
 {
  "version": 1,
  "metadata": {
-    "tags": ["prefix:pdf", "pdf", "provider:anthropic", "protocol:anthropic-messages", "user-input"],
+    "tags": [
+      "prefix:pdf",
+      "pdf",
+      "provider:anthropic",
+      "protocol:anthropic-messages",
+      "user-input"
+    ],
    "name": "pdf/anthropic-user-input",
    "recordedAt": "2026-07-22T18:15:37.979Z"
  },
@@ -1,7 +1,14 @@
 {
  "version": 1,
  "metadata": {
-    "tags": ["prefix:pdf", "pdf", "provider:amazon-bedrock", "protocol:bedrock-converse", "tool", "tool-result"],
+    "tags": [
+      "prefix:pdf",
+      "pdf",
+      "provider:amazon-bedrock",
+      "protocol:bedrock-converse",
+      "tool",
+      "tool-result"
+    ],
    "name": "pdf/bedrock-tool-result",
    "recordedAt": "2026-07-22T18:15:52.400Z"
  },
@@ -1,7 +1,13 @@
 {
  "version": 1,
  "metadata": {
-    "tags": ["prefix:pdf", "pdf", "provider:amazon-bedrock", "protocol:bedrock-converse", "user-input"],
+    "tags": [
+      "prefix:pdf",
+      "pdf",
+      "provider:amazon-bedrock",
+      "protocol:bedrock-converse",
+      "user-input"
+    ],
    "name": "pdf/bedrock-user-input",
    "recordedAt": "2026-07-22T18:15:48.408Z"
  },
@@ -1,7 +1,14 @@
 {
  "version": 1,
  "metadata": {
-    "tags": ["prefix:pdf", "pdf", "provider:google", "protocol:gemini", "tool", "tool-result"],
+    "tags": [
+      "prefix:pdf",
+      "pdf",
+      "provider:google",
+      "protocol:gemini",
+      "tool",
+      "tool-result"
+    ],
    "name": "pdf/gemini-tool-result",
    "recordedAt": "2026-07-22T18:21:59.606Z"
  },
@@ -1,7 +1,13 @@
 {
  "version": 1,
  "metadata": {
-    "tags": ["prefix:pdf", "pdf", "provider:google", "protocol:gemini", "user-input"],
+    "tags": [
+      "prefix:pdf",
+      "pdf",
+      "provider:google",
+      "protocol:gemini",
+      "user-input"
+    ],
    "name": "pdf/gemini-user-input",
    "recordedAt": "2026-07-22T18:20:55.140Z"
  },
@@ -1,7 +1,14 @@
 {
  "version": 1,
  "metadata": {
-    "tags": ["prefix:pdf", "pdf", "provider:openai", "protocol:openai-responses", "tool", "tool-result"],
+    "tags": [
+      "prefix:pdf",
+      "pdf",
+      "provider:openai",
+      "protocol:openai-responses",
+      "tool",
+      "tool-result"
+    ],
    "name": "pdf/openai-tool-result",
    "recordedAt": "2026-07-22T18:15:36.438Z"
  },
@@ -1,7 +1,13 @@
 {
  "version": 1,
  "metadata": {
-    "tags": ["prefix:pdf", "pdf", "provider:openai", "protocol:openai-responses", "user-input"],
+    "tags": [
+      "prefix:pdf",
+      "pdf",
+      "provider:openai",
+      "protocol:openai-responses",
+      "user-input"
+    ],
    "name": "pdf/openai-user-input",
    "recordedAt": "2026-07-22T18:15:34.867Z"
  },
@@ -1,7 +1,14 @@
 {
  "version": 1,
  "metadata": {
-    "tags": ["prefix:pdf", "pdf", "provider:xai", "protocol:openai-responses", "tool", "tool-result"],
+    "tags": [
+      "prefix:pdf",
+      "pdf",
+      "provider:xai",
+      "protocol:openai-responses",
+      "tool",
+      "tool-result"
+    ],
    "name": "pdf/xai-tool-result",
    "recordedAt": "2026-07-22T18:15:43.608Z"
  },
@@ -1,7 +1,13 @@
 {
  "version": 1,
  "metadata": {
-    "tags": ["prefix:pdf", "pdf", "provider:xai", "protocol:openai-responses", "user-input"],
+    "tags": [
+      "prefix:pdf",
+      "pdf",
+      "provider:xai",
+      "protocol:openai-responses",
+      "user-input"
+    ],
    "name": "pdf/xai-user-input",
    "recordedAt": "2026-07-22T18:15:42.429Z"
  },
@@ -2,7 +2,12 @@
  "version": 1,
  "metadata": {
    "model": "anthropic/claude-sonnet-4.6",
-    "tags": ["prefix:openai-compatible-chat", "provider:vercel-ai-gateway", "protocol:openai-chat", "reasoning"],
+    "tags": [
+      "prefix:openai-compatible-chat",
+      "provider:vercel-ai-gateway",
+      "protocol:openai-chat",
+      "reasoning"
+    ],
    "name": "vercel-ai-gateway-reasoning",
    "recordedAt": "2026-07-18T11:28:42.077Z"
  },
@@ -1,7 +1,11 @@
 {
  "version": 1,
  "metadata": {
-    "tags": ["prefix:xai-images", "provider:xai", "protocol:xai-images"],
+    "tags": [
+      "prefix:xai-images",
+      "provider:xai",
+      "protocol:xai-images"
+    ],
    "name": "xai-images/generates-an-image",
    "recordedAt": "2026-07-19T15:56:20.098Z"
  },
@@ -1,7 +1,5 @@
-import { Effect } from "effect"
 import {
  Image,
-  ImageClient,
  ImageInput,
  ImageModel,
  type ImageModelOptions,
@@ -9,13 +7,8 @@ import {
  type ImageRequestFor,
  type ImageRoute,
 } from "../src"
-import type { Service } from "../src/image-client"
 import { Google, OpenAI, XAI, ZAI } from "../src/providers"

-type Requirements<T> = T extends Effect.Effect<infer _A, infer _E, infer R> ? R : never
-type Equal<A, B> = [A, B] extends [B, A] ? true : false
-type Assert<T extends true> = T
-
 type GoogleLikeOptions = {
  readonly aspectRatio?: "1:1" | "16:9"
  readonly imageSize?: "1K" | "2K"
@@ -153,9 +146,6 @@ const request = Image.request({
 })
 const typedRequest: ImageRequestFor<GoogleLikeOptions> = request
 void typedRequest
-const generated = ImageClient.generate(request)
-type GenerateRequirements = Assert<Equal<Requirements<typeof generated>, Service>>
-void (true satisfies GenerateRequirements)

 // @ts-expect-error Image requests no longer expose a common count option.
 Image.generate({ model: openai, prompt: "A lighthouse", count: 2 })
@@ -1,11 +1,5 @@
-import { Effect, Schema, Stream } from "effect"
-import {
-  LLM,
-  type LLMClientService,
-  type LanguageModel,
-  type LanguageModelProviderOptions,
-  type ProviderOptions,
-} from "../src"
+import { Schema } from "effect"
+import { LLM, type LanguageModel, type LanguageModelProviderOptions, type ProviderOptions } from "../src"
 import { OpenAIChat } from "../src/protocols"

 interface ExampleOptions {
@@ -21,19 +15,9 @@ const model = OpenAIChat.route
  .with({ endpoint: { baseURL: "https://example.com/v1" } })
  .model<ExampleProviderOptions>({ id: "example" })

-type Requirements<T> = T extends Effect.Effect<infer _A, infer _E, infer R> ? R : never
-type StreamRequirements<T> = T extends Stream.Stream<infer _A, infer _E, infer R> ? R : never
-type Equal<A, B> = [A, B] extends [B, A] ? true : false
-type Assert<T extends true> = T
-
 LLM.request({ model, prompt: "Hello", providerOptions: { example: { mode: "fast" } } })
 LLM.request({ model, prompt: "Hello", providerOptions: { future: { option: true } } })

-const generated = LLM.generate(LLM.request({ model, prompt: "Hello" }))
-type GenerateRequirements = Assert<Equal<Requirements<typeof generated>, LLMClientService>>
-const streamed = LLM.stream(LLM.request({ model, prompt: "Hello" }))
-type StreamClientRequirements = Assert<Equal<StreamRequirements<typeof streamed>, LLMClientService>>
-
 LLM.request({
  model,
  prompt: "Hello",
@@ -41,20 +25,12 @@ LLM.request({
  providerOptions: { example: { mode: "slow" } },
 })

-const generatedObject = LLM.generateObject({
+LLM.generateObject({
  model,
  prompt: "Hello",
  schema: Schema.Struct({ answer: Schema.String }),
  providerOptions: { example: { mode: "thorough" } },
 })
-type GenerateObjectRequirements = Assert<Equal<Requirements<typeof generatedObject>, LLMClientService>>
-
-const generatedDynamicObject = LLM.generateObject({
-  model,
-  prompt: "Hello",
-  jsonSchema: { type: "object" },
-})
-type GenerateDynamicObjectRequirements = Assert<Equal<Requirements<typeof generatedDynamicObject>, LLMClientService>>

 LLM.generateObject({
  model,
@@ -68,8 +44,4 @@ declare const generic: LanguageModel
 LLM.request({ model: generic, prompt: "Hello", providerOptions: { arbitrary: { option: true } } })

 const options: LanguageModelProviderOptions<typeof model> = { example: { mode: "fast" } }
-void (options satisfies LanguageModelProviderOptions<typeof model>)
-void (true satisfies GenerateRequirements)
-void (true satisfies StreamClientRequirements)
-void (true satisfies GenerateObjectRequirements)
-void (true satisfies GenerateDynamicObjectRequirements)
+void options
@@ -102,7 +102,7 @@ describe("llm constructors", () => {
    const updated = LanguageModel.update(base, {
      route: responsesRoute,
      defaults: { generation: { maxTokens: 20 } },
-      compatibility: { toolSchema: "gemini", requireFinishReason: false },
+      compatibility: { toolSchema: "gemini" },
    })
    const updatedInput = LanguageModel.input(updated)

@@ -110,7 +110,7 @@ describe("llm constructors", () => {
    expect(String(updated.id)).toBe("fake-model")
    expect(updated.route).toBe(responsesRoute)
    expect(updated.defaults?.generation).toEqual({ maxTokens: 20 })
-    expect(updated.compatibility).toEqual({ toolSchema: "gemini", requireFinishReason: false })
+    expect(updated.compatibility).toEqual({ toolSchema: "gemini" })
    expect(updatedInput.defaults).toBe(updated.defaults)
    expect(updatedInput.compatibility).toBe(updated.compatibility)
    expect(String(updatedInput.provider)).toBe("fake")
@@ -3,11 +3,11 @@ import { CloudflareWorkersAI } from "../../src/providers"

 const model = CloudflareWorkersAI.configure({ accountId: "account", apiKey: "test" }).model("model")

-LLM.request({ model, prompt: "Hello", promptCacheKey: "cache" })
+LLM.request({ model, prompt: "Hello", providerOptions: { openai: { promptCacheKey: "cache" } } })

 LLM.request({
  model,
  prompt: "Hello",
-  // @ts-expect-error Prompt cache keys must be strings.
-  promptCacheKey: 1,
+  // @ts-expect-error Cloudflare's OpenAI-compatible prompt cache key must be a string.
+  providerOptions: { openai: { promptCacheKey: 1 } },
 })
@@ -0,0 +1,13 @@
+import { LLM } from "../../src"
+import { GitHubCopilot } from "../../src/providers"
+
+const model = GitHubCopilot.configure({ baseURL: "https://example.com" }).model("gpt-5")
+
+LLM.request({ model, prompt: "Hello", providerOptions: { openai: { reasoningSummary: "auto" } } })
+
+LLM.request({
+  model,
+  prompt: "Hello",
+  // @ts-expect-error Copilot reasoning summaries use the OpenAI union.
+  providerOptions: { openai: { reasoningSummary: "full" } },
+})
@@ -209,27 +209,6 @@ describe("provider package entrypoints", () => {
    expect(chat.route.id).toBe("azure-openai-chat")
  })

-  test("constructs Azure deployment URLs and preserves custom gateway URLs", async () => {
-    const Azure = await import("@opencode-ai/ai/providers/azure")
-    const deployment = Azure.model("custom-deployment", {
-      apiKey: "fixture",
-      resourceName: "opencode-test",
-      apiVersion: "2025-01-01-preview",
-      useDeploymentBasedUrls: true,
-    })
-    const gateway = Azure.model("gateway-model", {
-      apiKey: "fixture",
-      baseURL: "https://gateway.example/azure/",
-    })
-
-    expect(deployment.route.endpoint).toMatchObject({
-      baseURL: "https://opencode-test.openai.azure.com/openai/deployments/custom-deployment",
-      query: { "api-version": "2025-01-01-preview" },
-    })
-    expect(gateway.route.endpoint.baseURL).toBe("https://gateway.example/azure")
-    expect(gateway.route.endpoint.query).toBeUndefined()
-  })
-
  test("maps Google package settings onto the Gemini model", async () => {
    const Google = await import("@opencode-ai/ai/providers/google")
    const selected = Google.model("gemini-2.5-flash", {
@@ -538,8 +538,7 @@ describe("Anthropic Messages route", () => {

      expect(error.reason).toMatchObject({
        _tag: "InvalidProviderOutput",
-        classification: "incomplete-stream",
-        message: "The provider response ended unexpectedly.",
+        message: "Provider stream ended without a terminal finish event",
      })
    }),
  )
@@ -519,8 +519,14 @@ describe("Bedrock Converse route", () => {
          fixedBytes(
            eventStreamBody(
              ["messageStart", { role: "assistant" }],
-              ["contentBlockDelta", { contentBlockIndex: 0, delta: { reasoningContent: { text: "Let me think." } } }],
-              ["contentBlockDelta", { contentBlockIndex: 0, delta: { reasoningContent: { signature: "sig_1" } } }],
+              [
+                "contentBlockDelta",
+                { contentBlockIndex: 0, delta: { reasoningContent: { text: "Let me think." } } },
+              ],
+              [
+                "contentBlockDelta",
+                { contentBlockIndex: 0, delta: { reasoningContent: { signature: "sig_1" } } },
+              ],
              ["messageStop", { stopReason: "end_turn" }],
            ),
          ),
@@ -555,7 +561,10 @@ describe("Bedrock Converse route", () => {
    Effect.gen(function* () {
      const body = eventStreamBody(
        ["messageStart", { role: "assistant" }],
-        ["contentBlockDelta", { contentBlockIndex: 0, delta: { reasoningContent: { signature: "sig_1" } } }],
+        [
+          "contentBlockDelta",
+          { contentBlockIndex: 0, delta: { reasoningContent: { signature: "sig_1" } } },
+        ],
        ["contentBlockStop", { contentBlockIndex: 0 }],
        ["messageStop", { stopReason: "end_turn" }],
      )
@@ -16,13 +16,6 @@ const model = Gemini.route
  })
  .model({ id: "gemini-2.5-flash" })

-const gemini3 = Gemini.route
-  .with({
-    endpoint: { baseURL: "https://generativelanguage.test/v1beta/" },
-    auth: Auth.header("x-goog-api-key", "test"),
-  })
-  .model({ id: "gemini-3-flash-preview" })
-
 const request = LLM.request({
  id: "req_1",
  model,
@@ -93,39 +86,6 @@ describe("Gemini route", () => {
    }),
  )

-  it.effect("forwards standard Gemini generation options", () =>
-    Effect.gen(function* () {
-      const prepared = yield* compileRequest(
-        LLM.request({
-          model,
-          prompt: "Say hello.",
-          generation: {
-            maxTokens: 40,
-            temperature: 0.2,
-            topP: 0.8,
-            topK: 12,
-            frequencyPenalty: 0.3,
-            presencePenalty: 0.4,
-            seed: 42,
-            stop: ["done"],
-          },
-        }),
-      )
-
-      expect(prepared.body.generationConfig).toEqual({
-        maxOutputTokens: 40,
-        temperature: 0.2,
-        topP: 0.8,
-        topK: 12,
-        frequencyPenalty: 0.3,
-        presencePenalty: 0.4,
-        seed: 42,
-        stopSequences: ["done"],
-        thinkingConfig: undefined,
-      })
-    }),
-  )
-
  it.effect("lowers chronological system updates to wrapped user text in order", () =>
    Effect.gen(function* () {
      const prepared = yield* compileRequest(
@@ -390,100 +350,6 @@ describe("Gemini route", () => {
    }),
  )

-  it.effect("preserves nested empty object tool schemas", () =>
-    Effect.gen(function* () {
-      const prepared = yield* compileRequest(
-        LLM.request({
-          model,
-          prompt: "Use the tool.",
-          tools: [
-            {
-              name: "configure",
-              description: "Configure the operation",
-              inputSchema: {
-                type: "object",
-                required: ["options"],
-                properties: {
-                  options: { type: "object", description: "Optional provider settings", properties: {} },
-                },
-              },
-            },
-          ],
-        }),
-      )
-
-      expect(prepared.body.tools).toEqual([
-        {
-          functionDeclarations: [
-            {
-              name: "configure",
-              description: "Configure the operation",
-              parameters: {
-                type: "object",
-                required: ["options"],
-                properties: {
-                  options: { type: "object", description: "Optional provider settings", properties: {} },
-                },
-              },
-            },
-          ],
-        },
-      ])
-    }),
-  )
-
-  it.effect("projects Gemini type arrays without narrowing their allowed values", () =>
-    Effect.gen(function* () {
-      const prepared = yield* compileRequest(
-        LLM.request({
-          model,
-          prompt: "Use the tool.",
-          tools: [
-            {
-              name: "filter",
-              description: "Filter values",
-              inputSchema: {
-                type: "object",
-                properties: {
-                  status: { type: ["number", "string"], description: "Status filter" },
-                  maybe: { type: ["string", "null"] },
-                  nothing: { type: ["null"] },
-                  explicit: { anyOf: [{ type: "string" }, { type: "null" }] },
-                  choice: { anyOf: [{ type: "string" }, { type: "number" }, { type: "null" }] },
-                },
-              },
-            },
-          ],
-        }),
-      )
-
-      expect(prepared.body.tools?.[0]?.functionDeclarations[0]?.parameters).toEqual({
-        type: "object",
-        properties: {
-          status: {
-            description: "Status filter",
-            anyOf: [{ type: "number" }, { type: "string" }],
-          },
-          maybe: {
-            nullable: true,
-            anyOf: [{ type: "string" }],
-          },
-          nothing: {
-            type: "null",
-          },
-          explicit: {
-            type: "string",
-            nullable: true,
-          },
-          choice: {
-            anyOf: [{ type: "string" }, { type: "number" }],
-            nullable: true,
-          },
-        },
-      })
-    }),
-  )
-
  it.effect("parses text, reasoning, and usage stream fixtures", () =>
    Effect.gen(function* () {
      const body = sseEvents(
@@ -670,44 +536,6 @@ describe("Gemini route", () => {
    }),
  )

-  it.effect("replays unsigned Gemini 3 tool calls with the validator bypass sentinel", () =>
-    Effect.gen(function* () {
-      const prepared = yield* compileRequest(
-        LLM.request({
-          model: gemini3,
-          messages: [
-            Message.assistant([ToolCallPart.make({ id: "tool_0", name: "lookup", input: { query: "weather" } })]),
-            Message.tool({ id: "tool_0", name: "lookup", result: "done", resultType: "text" }),
-          ],
-        }),
-      )
-
-      expect(prepared.body.contents).toEqual([
-        {
-          role: "model",
-          parts: [
-            {
-              functionCall: { id: undefined, name: "lookup", args: { query: "weather" } },
-              thoughtSignature: "skip_thought_signature_validator",
-            },
-          ],
-        },
-        {
-          role: "user",
-          parts: [
-            {
-              functionResponse: {
-                id: undefined,
-                name: "lookup",
-                response: { name: "lookup", content: "done" },
-              },
-            },
-          ],
-        },
-      ])
-    }),
-  )
-
  it.effect("emits streamed tool calls and maps finish reason", () =>
    Effect.gen(function* () {
      const body = sseEvents({
@@ -773,34 +601,6 @@ describe("Gemini route", () => {
    }),
  )

-  it.effect("maps tool calls without a finish reason", () =>
-    Effect.gen(function* () {
-      const response = yield* LLMClient.generate(
-        LLMRequest.update(request, {
-          tools: [ToolDefinition.make({ name: "lookup", description: "Lookup data", inputSchema: { type: "object" } })],
-        }),
-      ).pipe(
-        Effect.provide(
-          fixedResponse(
-            sseEvents({
-              candidates: [
-                {
-                  content: {
-                    role: "model",
-                    parts: [{ functionCall: { name: "lookup", args: { query: "weather" } } }],
-                  },
-                },
-              ],
-              usageMetadata: { promptTokenCount: 5, candidatesTokenCount: 1 },
-            }),
-          ),
-        ),
-      )
-
-      expect(response.finishReason).toEqual({ normalized: "tool-calls", raw: undefined })
-    }),
-  )
-
  it.effect("assigns unique ids to multiple streamed tool calls", () =>
    Effect.gen(function* () {
      const body = sseEvents({
@@ -56,14 +56,13 @@ describe("Google Vertex providers", () => {

  it.effect("projects Anthropic Messages onto the Vertex raw-predict API", () =>
    Effect.gen(function* () {
-      const model = GoogleVertexMessages.configure({
-        accessToken: "vertex-token",
-        location: "eu",
-        project: "vertex-project",
-      }).model("claude-sonnet-4-6")
      const response = yield* LLMClient.generate(
        LLM.request({
-          model,
+          model: GoogleVertexMessages.configure({
+            accessToken: "vertex-token",
+            location: "eu",
+            project: "vertex-project",
+          }).model("claude-sonnet-4-6"),
          prompt: "Say hello.",
        }),
      ).pipe(
@@ -98,7 +97,6 @@ describe("Google Vertex providers", () => {
        ),
      )

-      expect(model.provider).toBe("google-vertex")
      expect(response.text).toBe("Hello.")
    }),
  )
@@ -15,8 +15,6 @@ import {
 } from "../../src"
 import * as Azure from "../../src/providers/azure"
 import * as OpenAI from "../../src/providers/openai"
-import * as OpenAICompatible from "../../src/providers/openai-compatible"
-import * as XAI from "../../src/providers/xai"
 import * as OpenAIChat from "../../src/protocols/openai-chat"
 import { ProviderShared } from "../../src/protocols/shared"
 import { Auth, LLMClient } from "../../src/route"
@@ -102,24 +100,6 @@ describe("OpenAI Chat route", () => {
    }),
  )

-  it.effect("concatenates assistant text parts without adding separators", () =>
-    Effect.gen(function* () {
-      const prepared = yield* compileRequest(
-        LLM.request({
-          model,
-          messages: [
-            Message.assistant([
-              { type: "text", text: "Hello" },
-              { type: "text", text: " world" },
-            ]),
-          ],
-        }),
-      )
-
-      expect(prepared.body.messages).toEqual([{ role: "assistant", content: "Hello world" }])
-    }),
-  )
-
  it.effect("writes reasoning to a configured custom field on every assistant message", () =>
    Effect.gen(function* () {
      const prepared = yield* compileRequest(
@@ -174,47 +154,6 @@ describe("OpenAI Chat route", () => {
    }),
  )

-  it.effect("maps the request prompt cache key", () =>
-    Effect.gen(function* () {
-      const prepared = yield* compileRequest(
-        LLM.request({
-          model: OpenAICompatible.configure({
-            baseURL: "https://api.compatible.test/v1",
-            apiKey: "test",
-          }).model("compatible-model"),
-          prompt: "Hello",
-          promptCacheKey: "session_123",
-        }),
-      )
-
-      expect(prepared.body.prompt_cache_key).toBe("session_123")
-    }),
-  )
-
-  it.effect("maps the xAI Chat prompt cache key to conversation affinity", () =>
-    LLMClient.generate(
-      LLM.request({
-        model: XAI.configure({ apiKey: "test", baseURL: "https://api.x.ai/v1" }).chat("grok-4.5"),
-        prompt: "Hello",
-        promptCacheKey: "session_123",
-      }),
-    ).pipe(
-      Effect.provide(
-        dynamicResponse((input) =>
-          Effect.gen(function* () {
-            const web = yield* HttpClientRequest.toWeb(input.request).pipe(Effect.orDie)
-            expect(web.headers.get("x-grok-conv-id")).toBe("session_123")
-            const body = decodeJson(yield* Effect.promise(() => web.text()))
-            expect(ProviderShared.isRecord(body) ? body.prompt_cache_key : undefined).toBe("session_123")
-            return input.respond(sseEvents(deltaChunk({}, "stop")), {
-              headers: { "content-type": "text/event-stream" },
-            })
-          }),
-        ),
-      ),
-    ),
-  )
-
  it.effect("passes through custom OpenAI-compatible reasoning effort strings", () =>
    Effect.gen(function* () {
      const prepared = yield* compileRequest(
@@ -596,7 +535,7 @@ describe("OpenAI Chat route", () => {
        }),
      )

-      expect(prepared.body.messages).toEqual([{ role: "assistant", content: "", reasoning_content: "hidden" }])
+      expect(prepared.body.messages).toEqual([{ role: "assistant", content: null, reasoning_content: "hidden" }])
    }),
  )

@@ -845,7 +784,7 @@ describe("OpenAI Chat route", () => {
    }),
  )

-  it.effect("preserves scalar reasoning after content starts", () =>
+  it.effect("ignores scalar reasoning after content starts", () =>
    Effect.gen(function* () {
      const details = [{ type: "reasoning.text", text: "detail", format: "unknown", index: 0 }]
      const response = yield* LLMClient.generate(request).pipe(
@@ -861,11 +800,11 @@ describe("OpenAI Chat route", () => {
        ),
      )

-      expect(response.reasoning).toBe("detailscalar")
-      expect(response.events.filter(LLMEvent.is.reasoningStart)).toHaveLength(2)
-      expect(response.events.filter(LLMEvent.is.reasoningEnd)).toHaveLength(2)
+      expect(response.reasoning).toBe("detail")
+      expect(response.events.filter(LLMEvent.is.reasoningStart)).toHaveLength(1)
+      expect(response.events.filter(LLMEvent.is.reasoningEnd)).toHaveLength(1)
      expect(response.message.content.find((part) => part.type === "reasoning")?.providerMetadata).toEqual({
-        openai: { reasoningField: "reasoning", reasoningDetails: details },
+        openai: { reasoningDetails: details },
      })
    }),
  )
@@ -965,7 +904,7 @@ describe("OpenAI Chat route", () => {
      expect(response.events.filter(LLMEvent.is.reasoningEnd)).toHaveLength(1)

      const replay = yield* compileRequest(LLM.request({ model, messages: [response.message] }))
-      expect(replay.body.messages).toEqual([{ role: "assistant", content: "", reasoning_details: details }])
+      expect(replay.body.messages).toEqual([{ role: "assistant", content: null, reasoning_details: details }])
    }),
  )

@@ -1015,7 +954,7 @@ describe("OpenAI Chat route", () => {
      )

      expect(replay.body.messages).toEqual([
-        { role: "assistant", content: "", reasoning: "firstsecond", reasoning_details: [first, second] },
+        { role: "assistant", content: null, reasoning: "firstsecond", reasoning_details: [first, second] },
      ])
    }),
  )
@@ -1040,7 +979,7 @@ describe("OpenAI Chat route", () => {
      )

      expect(replay.body.messages).toEqual([
-        { role: "assistant", content: "", reasoning_content: "AB", reasoning_details: [detail] },
+        { role: "assistant", content: null, reasoning_content: "AB", reasoning_details: [detail] },
      ])
    }),
  )
@@ -1062,7 +1001,7 @@ describe("OpenAI Chat route", () => {
      )

      expect(replay.body.messages).toEqual([
-        { role: "assistant", content: "", reasoning_content: "thinking", reasoning_details: details },
+        { role: "assistant", content: null, reasoning_content: "thinking", reasoning_details: details },
      ])
    }),
  )
@@ -1170,7 +1109,7 @@ describe("OpenAI Chat route", () => {
    }),
  )

-  it.effect("finalizes a streamed tool call when the provider ends without a finish reason", () =>
+  it.effect("fails a streamed tool call when the provider ends without a finish reason", () =>
    Effect.gen(function* () {
      const body = sseEvents(
        deltaChunk({
@@ -1182,31 +1121,24 @@ describe("OpenAI Chat route", () => {
      const input = LLMRequest.update(request, {
        tools: [ToolDefinition.make({ name: "lookup", description: "Lookup data", inputSchema: { type: "object" } })],
      })
-      const response = yield* LLMClient.generate(input).pipe(Effect.provide(fixedResponse(body)))
+      const events: LLMEvent[] = []
+      const streamError = yield* LLMClient.stream(input).pipe(
+        Stream.runForEach((event) => Effect.sync(() => events.push(event))),
+        Effect.flip,
+        Effect.provide(fixedResponse(body)),
+      )
+      const error = yield* LLMClient.generate(input).pipe(Effect.provide(fixedResponse(body)), Effect.flip)

-      expect(response.events).toEqual([
+      expect(events).toEqual([
        { type: "step-start", index: 0 },
        { type: "tool-input-start", id: "call_1", name: "lookup", providerMetadata: undefined },
        { type: "tool-input-delta", id: "call_1", name: "lookup", text: '{"query"' },
        { type: "tool-input-delta", id: "call_1", name: "lookup", text: ':"weather"}' },
-        { type: "tool-input-end", id: "call_1", name: "lookup", providerMetadata: undefined },
-        {
-          type: "tool-call",
-          id: "call_1",
-          name: "lookup",
-          input: { query: "weather" },
-          providerExecuted: undefined,
-          providerMetadata: undefined,
-        },
-        {
-          type: "step-finish",
-          index: 0,
-          reason: { normalized: "tool-calls" },
-          usage: undefined,
-          providerMetadata: undefined,
-        },
-        { type: "finish", reason: { normalized: "tool-calls" }, usage: undefined },
      ])
+      expect(events.filter(LLMEvent.is.toolCall)).toEqual([])
+      expect(streamError.reason).toMatchObject({ _tag: "InvalidProviderOutput" })
+      expect(streamError.message).toContain("Provider stream ended without a terminal finish event")
+      expect(error.message).toContain("Provider stream ended without a terminal finish event")
    }),
  )

@@ -7,7 +7,7 @@ import { compileRequest } from "../../src/route/client"
 import * as OpenAICompatible from "../../src/providers/openai-compatible"
 import * as OpenAICompatibleChat from "../../src/protocols/openai-compatible-chat"
 import { it } from "../lib/effect"
-import { dynamicResponse, fixedResponse } from "../lib/http"
+import { dynamicResponse } from "../lib/http"
 import { sseEvents } from "../lib/sse"

 const Json = Schema.fromJsonString(Schema.Unknown)
@@ -253,108 +253,4 @@ describe("OpenAI-compatible Chat route", () => {
      })
    }),
  )
-
-  it.effect("accepts nullable usage and preserves provider fields", () =>
-    Effect.gen(function* () {
-      const response = yield* LLMClient.generate(request).pipe(
-        Effect.provide(
-          fixedResponse(
-            sseEvents(
-              deltaChunk({ content: "Hello" }),
-              deltaChunk({}, "stop"),
-              usageChunk({
-                prompt_tokens: null,
-                completion_tokens: null,
-                total_tokens: null,
-                prompt_tokens_details: { cached_tokens: null, vendor_cache_tokens: 3 },
-                completion_tokens_details: {
-                  reasoning_tokens: null,
-                  accepted_prediction_tokens: null,
-                  rejected_prediction_tokens: null,
-                },
-                cost: "0.001",
-              }),
-            ),
-          ),
-        ),
-      )
-
-      expect(response.usage).toMatchObject({
-        inputTokens: undefined,
-        outputTokens: undefined,
-        totalTokens: undefined,
-        providerMetadata: {
-          openai: {
-            prompt_tokens: null,
-            completion_tokens: null,
-            total_tokens: null,
-            prompt_tokens_details: { cached_tokens: null, vendor_cache_tokens: 3 },
-            cost: "0.001",
-          },
-        },
-      })
-    }),
-  )
-
-  it.effect("assembles indexless parallel tool calls across sparse chunks", () =>
-    Effect.gen(function* () {
-      const response = yield* LLMClient.generate(
-        LLMRequest.update(request, {
-          tools: [
-            ToolDefinition.make({ name: "weather", description: "Get weather", inputSchema: { type: "object" } }),
-          ],
-        }),
-      ).pipe(
-        Effect.provide(
-          fixedResponse(
-            sseEvents(
-              deltaChunk({
-                tool_calls: [
-                  { id: "call_paris", function: { name: "weather", arguments: '{"city":"' } },
-                  { index: null, id: "call_london", function: { name: "weather", arguments: '{"city":"' } },
-                ],
-              }),
-              deltaChunk({ tool_calls: [{ function: { arguments: 'London"}' } }] }),
-              deltaChunk({ tool_calls: [{ id: "call_paris", function: { arguments: 'Paris"}' } }] }),
-              deltaChunk({}, "tool_calls"),
-            ),
-          ),
-        ),
-      )
-
-      expect(response.toolCalls).toMatchObject([
-        { id: "call_paris", name: "weather", input: { city: "Paris" } },
-        { id: "call_london", name: "weather", input: { city: "London" } },
-      ])
-    }),
-  )
-
-  it.effect("treats an empty finish reason as terminal", () =>
-    Effect.gen(function* () {
-      const response = yield* LLMClient.generate(request).pipe(
-        Effect.provide(fixedResponse(sseEvents(deltaChunk({ content: "Hello" }), deltaChunk({}, "")))),
-      )
-
-      expect(response.finishReason).toEqual({ normalized: "unknown", raw: "" })
-    }),
-  )
-
-  it.effect("rejects content after a terminal chunk", () =>
-    Effect.gen(function* () {
-      const error = yield* LLMClient.generate(request).pipe(
-        Effect.provide(
-          fixedResponse(
-            sseEvents(
-              deltaChunk({ content: "Hello" }),
-              deltaChunk({}, "stop"),
-              deltaChunk({ tool_calls: [{ index: 0, id: "call_1", function: { name: "lookup", arguments: "{}" } }] }),
-            ),
-          ),
-        ),
-        Effect.flip,
-      )
-
-      expect(error.message).toContain("OpenAI Chat received content after the finish reason")
-    }),
-  )
 })
@@ -20,7 +20,7 @@ const cacheRequest = LLM.request({
  system: LARGE_CACHEABLE_SYSTEM,
  prompt: "Say hi.",
  generation: { maxTokens: 16, temperature: 0 },
-  promptCacheKey: "recorded-cache-test",
+  providerOptions: { openai: { promptCacheKey: "recorded-cache-test" } },
 })

 const recorded = recordedTests({
@@ -682,9 +682,9 @@ describe("OpenAI Responses route", () => {
        LLM.request({
          model: OpenAI.configure({ baseURL: "https://api.openai.test/v1/", apiKey: "test" }).model("gpt-5.2"),
          prompt: "think",
-          promptCacheKey: "session_123",
          providerOptions: {
            openai: {
+              promptCacheKey: "session_123",
              reasoningEffort: "high",
              reasoningSummary: "auto",
              include: ["reasoning.encrypted_content"],
@@ -803,16 +803,17 @@ describe("OpenAI Responses route", () => {
    }),
  )

-  it.effect("maps the request prompt cache key", () =>
+  it.effect("request OpenAI provider options override route defaults", () =>
    Effect.gen(function* () {
      const prepared = yield* compileRequest(
        LLM.request({
          model: OpenAI.configure({
            baseURL: "https://api.openai.test/v1/",
            apiKey: "test",
+            providerOptions: { openai: { promptCacheKey: "model_cache" } },
          }).model("gpt-4.1-mini"),
          prompt: "no cache",
-          promptCacheKey: "request_cache",
+          providerOptions: { openai: { promptCacheKey: "request_cache" } },
        }),
      )

@@ -162,6 +162,7 @@ describe("OpenRouter", () => {
              openrouter: {
                usage: true,
                reasoning: { effort: "high" },
+                promptCacheKey: "session_123",
                models: ["anthropic/claude-sonnet-4.6", "google/gemini-3.1-pro"],
                provider: { order: ["anthropic", "google"], require_parameters: true },
                plugins: [{ id: "response-healing" }],
@@ -173,7 +174,6 @@ describe("OpenRouter", () => {
            },
          }).model("anthropic/claude-3.7-sonnet:thinking"),
          prompt: "Think briefly.",
-          promptCacheKey: "session_123",
        }),
      )

@@ -169,7 +169,7 @@ describe("LLMClient tools", () => {
        LLMEvent.toolCall({ id: "call_projected", name: "projected", input: { prefix: "count" } }),
      )

-      expect(calls).toEqual([{ id: "call_projected", parameters: { prefix: "count" }, output: { count: "2" } }])
+      expect(calls).toEqual([{ callID: "call_projected", parameters: { prefix: "count" }, output: { count: "2" } }])
      expect(dispatched.result).toEqual({ type: "text", value: "count:2" })
      expect(dispatched.output).toEqual({ structured: { count: "2" }, content: [{ type: "text", text: "count:2" }] })
      expect(dispatched.events).toEqual([
@@ -27,8 +27,8 @@ Tool.make({
  parameters: Schema.Struct({ city: Schema.String }),
  success: Schema.Struct({ forecast: Schema.NumberFromString }),
  execute: () => Effect.succeed({ forecast: 1 }),
-  toModelOutput: ({ id, parameters, output }) => [
-    { type: "text", text: `${id}:${parameters.city}:${output.forecast}` },
+  toModelOutput: ({ callID, parameters, output }) => [
+    { type: "text", text: `${callID}:${parameters.city}:${output.forecast}` },
  ],
 })

@@ -19,21 +19,6 @@

 - Always prefer `createStore` over multiple `createSignal` calls

-## 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.
- When migrating existing copy to i18n, preserve the English text byte-for-byte unless the task explicitly requests a copy change.
- NEVER change existing English text or English keys to facilitate translation. English is intentional, designer-written source copy; adapt locale-specific translations and i18n mechanics around it.
- Keep locale complexity behind the shared typed i18n APIs. Feature and component code should use `language.t(...)` for ordinary copy and `language.plural(baseKey, count, params)` for count-sensitive copy. It must not inspect the locale, call `Intl.PluralRules`, construct or select plural-category keys such as `.one` or `.other`, or branch on locale-specific grammar.
- Prefer complete translated phrases. Do not concatenate grammatical fragments or make call sites assemble sentences. Keep placeholders to irreducible dynamic values such as names, paths, and counts.
- If a translation cannot be expressed by the current API, deepen the shared language/UI i18n module so one typed call owns locale selection, plural resolution, fallback, and interpolation. Do not leak that machinery into product code.
- Do not translate from model knowledge alone. Verify terminology and grammar with Unicode CLDR locale/plural data, Microsoft Localization Style Guides and terminology, Apple localization/style guidance and localized platform UI, Mozilla localization style guides, Mozilla Pontoon, and the Firefox localization corpus at `github.com/mozilla-l10n/firefox-l10n`.
- For developer-facing terminology, prefer the words already used by the target language's developer community over literal dictionary translations. Cross-check maintained localized developer products such as Firefox, KDE, and VS Code; use at least two independent corpora when they are available. If established practice keeps an English loanword or acronym, keep it rather than inventing a translation.
- Translate complete UI phrases in context. A glossary hit is evidence, not permission to translate word-by-word. Check terse labels such as session, prompt, agent, model, fork, shell, terminal, workspace, and worktree in the same grammatical role before choosing a term.
- Before a locale is ready, audit recurring concepts for one consistent translation and review every value that still equals English. Classify retained English as a product name, provider/tool name, URL, code token, keyboard legend, acronym, asset name, or established borrowing; translate unexplained leftovers.
- In translation review notes, name the corpora used and call out uncertain or region-specific terminology so native speakers can focus review where it matters.
- Also use the relevant language authority or official dictionary for the locale (for example RAE/Fundéu, FranceTerme, Duden, TDK, Kotus/Kielitoimiston sanakirja, Språkrådet/Bokmålsordboka, Rada Języka Polskiego/PWN, the Russian and Arabic language academies, the Ukrainian Orthography, Taiwan MOE dictionaries, or the Royal Society of Thailand). Treat the English dictionary as the semantic source of truth and preserve placeholders, code identifiers, product names, and keyboard labels.
-
 ## Tool Calling

 - ALWAYS USE PARALLEL TOOLS WHEN APPLICABLE.
@@ -0,0 +1,220 @@
+# V1 API Migration Checklist
+
+The app is currently hybrid. In this document, V1 refers to the legacy unprefixed server APIs used by `@opencode-ai/sdk/v2`, despite the SDK package name.
+
+## Events
+
+- [x] Replace `GET /global/event` with `GET /api/event`.
+  - `src/context/server-sdk.tsx`
+- [x] Reduce current granular session and message events into the existing app projections.
+  - `src/context/server-session-v2-reducer.ts`
+  - `src/context/server-session.ts`
+- [ ] Remove transitional session event dependencies: `session.created`, `session.updated`, `session.diff`, `session.status`, `session.idle`, and `session.error`.
+  - `src/context/global-sync/event-reducer.ts`
+  - `src/context/server-session.ts`
+  - `src/context/notification.tsx`
+  - `src/pages/session/usage-exceeded-dialogs.tsx`
+- [ ] Remove legacy message event compatibility: `message.updated`, `message.removed`, `message.part.updated`, `message.part.removed`, and `message.part.delta`.
+  - `src/context/global-sync/event-reducer.ts`
+  - `src/context/server-session.ts`
+- [x] Adapt current permission and question events to the existing request model.
+  - `src/context/global-sync/event-reducer.ts`
+  - `src/context/permission.tsx`
+- [x] Consume current file watcher events.
+  - `src/context/file.tsx`
+- [x] Consume current VCS events.
+  - `src/context/global-sync/event-reducer.ts`
+  - `src/pages/session.tsx`
+- [x] Consume current `pty.exited` events.
+  - `src/context/terminal.tsx`
+- [ ] Migrate LSP and reference events.
+  - `src/context/global-sync/event-reducer.ts`
+
+## Sessions
+
+- [x] Replace `GET /session/status` with one server-scoped `GET /api/session/active` snapshot plus V2 execution events.
+  - `src/context/server-sync.tsx`
+- [x] Migrate session listing from `GET /session`.
+  - `src/context/server-sync.tsx`
+  - `src/context/directory-sync.ts`
+  - `src/pages/layout.tsx`
+- [x] Migrate the remaining direct session read from `GET /session/:sessionID`.
+  - `src/components/titlebar.tsx`
+- [x] Migrate session updates from `PATCH /session/:sessionID`.
+  - `src/context/directory-sync.ts`
+  - `src/context/layout.tsx`
+  - `src/pages/home.tsx`
+  - `src/pages/layout.tsx`
+  - `src/pages/session/timeline/message-timeline.tsx`
+  - `src/components/titlebar-tab-nav.tsx`
+  - Renames use `POST /api/session/:sessionID/rename`; archival uses `POST /api/session/:sessionID/archive`.
+- [x] Migrate session deletion from `DELETE /session/:sessionID`.
+  - `src/pages/session/timeline/message-timeline.tsx`
+- [x] Remove session diff loading from `GET /session/:sessionID/diff`.
+  - Historical Session diffs remain unavailable until the current API defines their snapshot semantics.
+- [x] Migrate abort from `POST /session/:sessionID/abort`.
+  - `src/components/prompt-input/submit.ts`
+  - `src/pages/session/use-session-commands.tsx`
+  - `src/pages/session.tsx`
+- [x] Migrate revert and unrevert from `POST /session/:sessionID/revert` and `POST /session/:sessionID/unrevert`.
+  - `src/pages/session/use-session-commands.tsx`
+  - `src/pages/session.tsx`
+- [x] Replace `POST /session/:sessionID/summarize` with the current compact API.
+  - `src/pages/session/use-session-commands.tsx`
+- [x] Migrate slash commands from `POST /session/:sessionID/command`.
+  - `src/components/prompt-input/submit.ts`
+- [x] Migrate shell execution from `POST /session/:sessionID/shell`.
+  - `src/components/prompt-input/submit.ts`
+- [x] Migrate session fork from `POST /session/:sessionID/fork`.
+  - `src/components/dialog-fork.tsx`
+- [ ] Migrate sharing from `POST /session/:sessionID/share` and `DELETE /session/:sessionID/share`.
+  - `src/pages/session/use-session-commands.tsx`
+  - `src/pages/session/timeline/message-timeline.tsx`
+  - Blocked: the current API has no sharing contract or implementation.
+
+## Session Compatibility Fallbacks
+
+These calls are retained as fallback adapters. The current production path supplies the current session and message APIs.
+
+- [ ] Remove fallback `GET /session/:sessionID` after compatibility support is unnecessary.
+  - `src/context/server-session.ts`
+- [ ] Remove fallback `GET /session/:sessionID/message` after compatibility support is unnecessary.
+  - `src/context/server-session.ts`
+- [ ] Remove fallback `GET /session/:sessionID/message/:messageID` after compatibility support is unnecessary.
+  - `src/context/server-session.ts`
+
+## Filesystem
+
+- [ ] Migrate file listing from `GET /file`.
+  - `src/context/file.tsx`
+- [ ] Migrate file reads from `GET /file/content`.
+  - `src/context/file.tsx`
+  - `src/pages/session/review-tab.tsx`
+  - `src/pages/session/v2/review-panel-v2.tsx`
+- [x] Migrate path discovery from `GET /path` to `GET /api/path`.
+  - `src/context/global-sync/bootstrap.ts`
+  - `src/components/dialog-select-directory.tsx`
+  - `src/components/dialog-select-directory-v2.tsx`
+
+## Projects And Worktrees
+
+- [x] Migrate project listing from `GET /project` to `GET /api/project`.
+  - `src/context/global-sync/bootstrap.ts`
+- [x] Migrate the current project lookup from `GET /project/current` to `GET /api/project/current`.
+  - `src/context/global-sync/bootstrap.ts`
+- [ ] Migrate Git initialization from `POST /project/git/init`.
+  - `src/pages/session.tsx`
+- [x] Migrate project updates from `PATCH /project/:projectID` to `PATCH /api/project/:projectID`.
+  - `src/context/layout.tsx`
+  - `src/components/edit-project.ts`
+  - `src/pages/layout.tsx`
+- [ ] Migrate experimental worktree listing, creation, removal, and reset from `/experimental/worktree`.
+  - `src/pages/layout.tsx`
+  - `src/components/prompt-input/submit.ts`
+  - Listing now uses `GET /api/project/:projectID/directories`; create, removal, and reset remain.
+- [ ] Migrate instance disposal from `POST /instance/dispose`.
+  - `src/pages/layout.tsx`
+
+## VCS
+
+- [x] Migrate repository information from `GET /vcs` to `GET /api/vcs`.
+  - `src/context/global-sync/bootstrap.ts`
+- [x] Migrate diffs from `GET /vcs/diff` to `GET /api/vcs/diff`.
+  - `src/pages/session.tsx`
+- [x] Migrate status from `GET /vcs/status` to `GET /api/vcs/status`.
+  - `src/pages/layout.tsx`
+
+## Configuration And Authentication
+
+- [ ] Migrate global configuration reads from `GET /global/config`.
+  - `src/context/global-sync/bootstrap.ts`
+- [ ] Migrate directory configuration reads from `GET /config`.
+  - `src/context/global-sync/bootstrap.ts`
+- [ ] Migrate global configuration updates from `PATCH /global/config`.
+  - `src/context/server-sync.tsx`
+- [x] Migrate provider authentication method discovery from `GET /provider/auth` to `GET /api/integration/:integrationID`.
+  - `src/components/dialog-connect-provider.tsx`
+- [x] Migrate built-in provider OAuth authorization and callbacks to `/api/integration/:integrationID/connect/oauth/*`.
+  - `src/components/dialog-connect-provider.tsx`
+- [ ] Migrate remaining credentials from `PUT /auth/:providerID` and `DELETE /auth/:providerID`.
+  - Built-in provider key connections now use `POST /api/integration/:integrationID/connect/key`.
+  - `src/components/dialog-connect-provider.tsx`
+  - `src/components/dialog-custom-provider.tsx`
+  - `src/components/settings-providers.tsx`
+  - `src/components/settings-v2/providers.tsx`
+- [ ] Migrate global disposal from `POST /global/dispose`.
+  - `src/components/dialog-connect-provider.tsx`
+  - `src/components/settings-providers.tsx`
+  - `src/components/settings-v2/providers.tsx`
+
+## Permissions And Questions
+
+- [x] Migrate permission listing from `GET /permission` to `GET /api/permission/request`.
+  - `src/context/global-sync/bootstrap.ts`
+  - `src/context/permission.tsx`
+- [x] Migrate permission responses from `/session/:sessionID/permissions/:permissionID`.
+  - `src/context/permission.tsx`
+  - `src/pages/session/composer/session-composer-state.ts`
+- [x] Migrate question listing from `GET /question` to `GET /api/question/request`.
+  - `src/context/global-sync/bootstrap.ts`
+- [x] Migrate question replies and rejections from `/question/:requestID/*` to `/api/session/:sessionID/question/:requestID/*`.
+  - `src/pages/session/composer/session-question-dock.tsx`
+
+## Commands, MCP, LSP, And References
+
+- [x] Migrate command listing from `GET /command` to `GET /api/command`.
+  - `src/context/global-sync/bootstrap.ts`
+  - `src/context/server-sync.tsx`
+- [x] Migrate MCP listing, connection, and disconnection from `/mcp` to `/api/mcp`.
+  - `src/context/server-sync.tsx`
+- [ ] Replace legacy MCP authentication with the Integration OAuth workflow.
+  - `src/context/server-sync.tsx`
+- [x] Migrate experimental resource listing from `GET /experimental/resource` to `GET /api/mcp/resource`.
+  - `src/context/server-sync.tsx`
+- [ ] Migrate LSP status from `GET /lsp`.
+  - `src/context/server-sync.tsx`
+- [x] Move `GET /api/reference` off the legacy generated SDK transport.
+  - `src/context/global-sync/bootstrap.ts`
+
+## Search
+
+- [x] Migrate global session search from `GET /experimental/session` to `GET /api/session`.
+  - `src/components/command-palette.ts`
+  - `src/components/dialog-command-palette-v2.tsx`
+
+## PTY And Terminal
+
+- [x] Migrate PTY creation, reads, updates, and deletion from `/pty` to `/api/pty`.
+  - `src/context/terminal.tsx`
+  - `src/components/terminal.tsx`
+- [x] Migrate shell listing from `GET /pty/shells` to `GET /api/pty/shells`.
+  - `src/components/settings-general.tsx`
+  - `src/components/settings-v2/general.tsx`
+- [x] Migrate connection tokens from `POST /pty/:ptyID/connect-token` to `POST /api/pty/:ptyID/connect-token`.
+  - `src/components/terminal.tsx`
+- [x] Migrate the direct WebSocket connection from `/pty/:ptyID/connect` to `/api/pty/:ptyID/connect`.
+  - `src/components/terminal.tsx`
+
+## Legacy Types And Adapters
+
+These are not V1 network requests, but they keep the UI coupled to V1 data contracts.
+
+- [ ] Replace the current-session-to-legacy-session adapter.
+  - `src/utils/session.ts`
+- [ ] Replace the current-message-to-legacy-message-and-part adapter.
+  - `src/utils/session-message.ts`
+- [ ] Replace current agent, provider, and model adapters to legacy SDK structures.
+  - `src/context/global-sync/utils.ts`
+- [ ] Replace legacy `Session`, `Message`, `Part`, `PermissionRequest`, `QuestionRequest`, `Project`, `FileNode`, `FileDiffInfo`, and `Event` types throughout app state and rendering.
+- [ ] Remove the `@opencode-ai/sdk` runtime dependency after all legacy calls and types are gone.
+  - `package.json`
+
+## Test Infrastructure
+
+- [ ] Replace V1 endpoint mocks with current API mocks.
+  - `e2e/utils/mock-server.ts`
+- [x] Replace `/global/event` and `/event` interception with current event transport handling.
+  - `e2e/utils/sse-transport.ts`
+- [ ] Replace `SessionV1` and legacy SDK fixtures in timeline performance tests.
+  - `e2e/performance/timeline-stability/fixture.ts`
+- [ ] Remove remaining legacy SDK type fixtures from unit and browser tests.
@@ -1,16 +0,0 @@
-## Required Reading
-
- Before writing, changing, or reviewing E2E tests, ALWAYS read and follow Playwright's official [Best Practices](https://playwright.dev/docs/best-practices), [Auto-waiting](https://playwright.dev/docs/actionability), and [Assertions](https://playwright.dev/docs/test-assertions) guides.
- Use the official [Locators](https://playwright.dev/docs/locators), [Network](https://playwright.dev/docs/network), and [Test Isolation](https://playwright.dev/docs/browser-contexts) guides when those concerns apply.
-
-## Test Hygiene
-
- Test user-visible behavior with isolated, deterministic data and scoped, unique locators.
- Prefer role, label, text, and explicit test-contract locators. Do not use `.first()` or `.last()` merely to silence strictness errors.
- Use locator actions, Playwright auto-waiting, and web-first assertions for observable readiness and outcomes.
- NEVER use `waitForTimeout`, `setTimeout`, sleeps, animation-frame counts, or other wall-clock delays to synchronize a test. Wait for the specific UI state, request, response, event, or application outcome instead.
- Do not treat navigation, a network response, DOM attachment, or visibility alone as proof that asynchronously rendered UI is ready. Assert the state the next action actually requires.
- Register event and network waits before the action that triggers them.
- Do not retry state-changing actions. Retry idempotent readiness checks, then perform the action once and assert its outcome.
- Keep action and assertion timeouts adaptive. Do not use short timeouts as readiness probes or rely on retries to hide flakes.
- Assert exact outcomes and identities so stale state, duplicate rendering, and interactions with the wrong element cannot pass.
@@ -2,13 +2,22 @@ import { base64Encode } from "@opencode-ai/core/util/encode"
 import { Event } from "@opencode-ai/schema/event"
 import { SessionStatusEvent } from "@opencode-ai/schema/session-status-event"
 import { SessionV1 } from "@opencode-ai/schema/session-v1"
-import type { SessionInfo, SessionStatus } from "@opencode-ai/client/promise"
-import type { AssistantMessage, Message, Part, ToolPart, ToolState, UserMessage } from "../../../src/types"
+import type {
+  AssistantMessage,
+  GlobalEvent,
+  Message,
+  Part,
+  Session,
+  SessionStatus,
+  ToolPart,
+  ToolState,
+  UserMessage,
+} from "@opencode-ai/sdk/v2/client"
 import { expect, type Page } from "@playwright/test"
 import { Schema } from "effect"
 import { mockOpenCodeServer } from "../../utils/mock-server"
 import { installSseTransport } from "../../utils/sse-transport"
-import { expectSessionReady } from "../../utils/waits"
+import { expectSessionTitle } from "../../utils/waits"

 export const directory = "C:/OpenCode/TimelineStability"
 export const projectID = "proj_timeline_stability"
@@ -18,29 +27,18 @@ export const assistantID = "msg_1001_timeline_assistant"
 export const title = "Timeline visual stability"
 export const model = { providerID: "opencode", modelID: "claude-opus-4-6", variant: "max" }

-type Session = SessionInfo
-type GlobalEvent = {
-  directory: string
-  project?: string
-  workspace?: string
-  payload: {
-    id: string
-    type: string
-    properties: Record<string, unknown>
+type TimelinePayload = Extract<
+  GlobalEvent["payload"],
+  {
+    type:
+      | "message.updated"
+      | "message.removed"
+      | "message.part.updated"
+      | "message.part.removed"
+      | "message.part.delta"
+      | "session.status"
  }
-}
-
-type TimelineProperties = {
-  "message.updated": { sessionID: string; info: Message }
-  "message.removed": { sessionID: string; messageID: string }
-  "message.part.updated": { sessionID: string; part: Part; time: number }
-  "message.part.removed": { sessionID: string; messageID: string; partID: string }
-  "message.part.delta": { sessionID: string; messageID: string; partID: string; field: string; delta: string }
-  "session.status": { sessionID: string; status: SessionStatus }
-}
-type TimelinePayload = {
-  [Type in keyof TimelineProperties]: { id: string; type: Type; properties: TimelineProperties[Type] }
-}[keyof TimelineProperties]
+>

 type DeepReadonly<Value> = Value extends readonly unknown[]
  ? { readonly [Key in keyof Value]: DeepReadonly<Value[Key]> }
@@ -99,6 +97,7 @@ export async function setupTimeline(
    locale?: string
    deviceScaleFactor?: number
    seedHistory?: boolean
+    protocol?: "v1" | "v2"
  } = {},
 ) {
  const sessions = input.sessions ?? [session()]
@@ -111,13 +110,12 @@ export async function setupTimeline(
    active?.info.role === "assistant" && active.info.time.completed === undefined ? { type: "busy" } : { type: "idle" },
    decodeOptions,
  )
-  const server = `http://${process.env.PLAYWRIGHT_SERVER_HOST ?? "127.0.0.1"}:${process.env.PLAYWRIGHT_SERVER_PORT ?? "4096"}`
  const transport = await installSseTransport<EventPayload>(page, {
-    server,
+    server: `http://${process.env.PLAYWRIGHT_SERVER_HOST ?? "127.0.0.1"}:${process.env.PLAYWRIGHT_SERVER_PORT ?? "4096"}`,
    retry: input.eventRetry ?? 20,
  })
  await mockOpenCodeServer(page, {
-    protocol: "v2",
+    protocol: input.protocol,
    directory,
    project: project(),
    provider: provider(),
@@ -162,8 +160,8 @@ export async function setupTimeline(
    })
  }
  await page.goto(`/${base64Encode(directory)}/session/${sessionID}`)
-  await expectSessionReady(page, { server, sessionID, title })
  await transport.waitForConnection()
+  await expectSessionTitle(page, title)
  if (input.cpuRate && input.cpuRate > 1) {
    const devtools = await page.context().newCDPSession(page)
    await devtools.send("Emulation.setCPUThrottlingRate", { rate: input.cpuRate })
@@ -199,9 +197,7 @@ export async function setupTimeline(
      )
    },
    async waitForPart(partID: string) {
-      const part = page.locator(`[data-timeline-part-id="${partID}"]`)
-      await expect(part).toHaveCount(1)
-      await expect(part).toBeVisible()
+      await expect(page.locator(`[data-timeline-part-id="${partID}"]`).first()).toBeVisible()
    },
  }
 }
@@ -239,7 +235,7 @@ export function event(type: TimelinePayload["type"], properties: TimelinePayload
 }

 export function validateTimelineEvent(input: unknown): TimelineEvent {
-  return decodeEvent(input, decodeOptions) as TimelineEvent
+  return decodeEvent(input, decodeOptions)
 }

 export function validateTimelineMessages(input: readonly TimelineMessage[]): TimelineMessage[] {
@@ -464,7 +460,7 @@ export function toolPart(
  input: Record<string, unknown>,
  options: ToolOptions<ToolStatus> = {},
 ): Omit<ToolPart, "sessionID" | "messageID"> {
-  const base = { id, type: "tool" as const, callID: id, tool }
+  const base = { id, type: "tool" as const, callID: `call_${id}`, tool }
  if (state === "pending") return { ...base, state: { status: state, input, raw: "" } }
  if (state === "running")
    return {
@@ -533,11 +529,11 @@ export function project() {
 export function session(input: Partial<Session> = {}): Session {
  return {
    id: sessionID,
+    slug: "timeline-stability",
    projectID,
-    location: { directory },
+    directory,
    title,
-    cost: 0,
-    tokens: { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
+    version: "dev",
    time: { created: 1700000000000, updated: 1700000000000 },
    ...input,
  }
@@ -178,7 +178,6 @@ test("shows all and expands historical diff summary without overlap", async ({ p
    summary: {
      diffs: Array.from({ length: 12 }, (_, index) => ({
        file: `src/diff-${index}.ts`,
-        status: "modified",
        additions: 1,
        deletions: 1,
        patch: `@@ -1 +1 @@\n-export const value = ${index}\n+export const value = ${index + 1}`,
@@ -1,121 +1,6 @@
 import { expect, test } from "bun:test"
-import type { SessionMessageInfo } from "@opencode-ai/client/promise"
 import type { Page, Route } from "@playwright/test"
-import { currentMessage, mockOpenCodeServer } from "../../utils/mock-server"
-
-test("preserves current messages", () => {
-  const message = {
-    id: "msg_current",
-    type: "user",
-    time: { created: 1 },
-    text: "current",
-    files: [{ data: "e30=", mime: "application/json", source: { type: "inline" } }],
-  } satisfies SessionMessageInfo
-
-  expect(currentMessage(message)).toBe(message)
-})
-
-test("converts rich legacy messages to current message types", () => {
-  expect(
-    currentMessage({
-      info: { id: "msg_user", role: "user", time: { created: 1 } },
-      parts: [
-        { type: "text", text: "Use @src/a.ts with @explore" },
-        {
-          type: "file",
-          mime: "application/json",
-          filename: "data.json",
-          url: "data:application/json;base64,e30=",
-        },
-        {
-          type: "file",
-          mime: "text/plain",
-          filename: "a.ts",
-          url: "src/a.ts",
-          source: { type: "file", text: { value: "@src/a.ts", start: 4, end: 13 } },
-        },
-        { type: "agent", name: "explore", source: { value: "@explore", start: 19, end: 27 } },
-      ],
-    }),
-  ).toEqual({
-    id: "msg_user",
-    type: "user",
-    time: { created: 1 },
-    text: "Use @src/a.ts with @explore",
-    files: [
-      { data: "e30=", mime: "application/json", name: "data.json", source: { type: "inline" } },
-      {
-        data: "",
-        mime: "text/plain",
-        name: "a.ts",
-        source: { type: "uri", uri: "src/a.ts" },
-        mention: { text: "@src/a.ts", start: 4, end: 13 },
-      },
-    ],
-    agents: [{ name: "explore", mention: { text: "@explore", start: 19, end: 27 } }],
-  })
-
-  expect(
-    currentMessage({
-      info: {
-        id: "msg_assistant",
-        role: "assistant",
-        time: { created: 2, completed: 5 },
-        agent: "explore",
-        modelID: "model",
-        providerID: "provider",
-        variant: "high",
-        cost: 0.5,
-        tokens: { input: 1, output: 2, reasoning: 3, cache: { read: 4, write: 5 } },
-        finish: "tool-calls",
-        error: { name: "MessageAbortedError", data: { message: "Stopped" } },
-      },
-      parts: [
-        { type: "text", text: "Answer" },
-        { type: "reasoning", text: "Thinking", time: { start: 2, end: 3 } },
-        {
-          id: "prt_tool",
-          callID: "call_tool",
-          type: "tool",
-          tool: "read",
-          state: {
-            status: "completed",
-            input: { filePath: "src/a.ts" },
-            output: "contents",
-            metadata: { title: "a.ts" },
-            time: { start: 3, end: 4 },
-          },
-        },
-      ],
-    }),
-  ).toEqual({
-    id: "msg_assistant",
-    type: "assistant",
-    time: { created: 2, completed: 5 },
-    agent: "explore",
-    model: { id: "model", providerID: "provider", variant: "high" },
-    cost: 0.5,
-    tokens: { input: 1, output: 2, reasoning: 3, cache: { read: 4, write: 5 } },
-    finish: "tool-calls",
-    error: { type: "MessageAbortedError", message: "Stopped" },
-    content: [
-      { type: "text", text: "Answer" },
-      { type: "reasoning", text: "Thinking", time: { created: 2, completed: 3 } },
-      {
-        type: "tool",
-        id: "call_tool",
-        name: "read",
-        time: { created: 3, ran: 3, completed: 4 },
-        state: {
-          status: "completed",
-          input: { filePath: "src/a.ts" },
-          content: [{ type: "text", text: "contents" }],
-          metadata: { title: "a.ts" },
-        },
-      },
-    ],
-  })
-})
+import { mockOpenCodeServer } from "../../utils/mock-server"

 test("applies message latency after a list response gate is released", async () => {
  const events: string[] = []
@@ -145,7 +30,7 @@ test("applies message latency after a list response gate is released", async ()
  })

  const response = handler!({
-    request: () => ({ url: () => "http://127.0.0.1:4096/api/session/session/message" }),
+    request: () => ({ url: () => "http://127.0.0.1:4096/session/session/message" }),
    fulfill: () => {
      events.push("fulfill")
      return Promise.resolve()
@@ -85,16 +85,21 @@ async function mockServers(page: Page, requests: string[]) {
    const current = url.origin === serverA ? sessionA : sessionB
    const directory = url.searchParams.get("directory")
    if (directory && directory !== current.directory) return json(route, { name: "InvalidDirectory" }, 500)
-    if (url.pathname === "/api/event") return sse(route)
+    if (url.pathname === "/global/event" || url.pathname === "/event" || url.pathname === "/api/event")
+      return sse(route)
+    if (url.pathname === "/global/health") return json(route, {}, 404)
    if (url.pathname === "/api/health") return json(route, { pid: 1 })
    if (url.pathname === "/api/session") return json(route, { data: [currentSession(current)], cursor: {} })
    if (url.pathname === "/api/session/active") return json(route, { data: {} })
    if (url.pathname === `/api/session/${current.id}`) return json(route, { data: currentSession(current) })
    if (url.pathname === `/api/session/${current.id}/message`) return json(route, { data: [], cursor: {} })
+    if (url.pathname === `/session/${current.id}`) return json(route, current)
    if (/^\/session\/[^/]+$/.test(url.pathname)) return json(route, { name: "NotFoundError" }, 404)
+    if (url.pathname === `/session/${current.id}/message`) return json(route, [])
    if (/^\/session\/[^/]+\/(children|todo|diff)$/.test(url.pathname)) return json(route, [])
    if (["/skill", "/command", "/lsp", "/formatter", "/permission", "/question", "/vcs/diff"].includes(url.pathname))
      return json(route, [])
+    if (["/global/config", "/config", "/provider/auth", "/mcp"].includes(url.pathname)) return json(route, {})
    if (url.pathname === "/provider")
      return json(route, { all: [], connected: [], default: { providerID: "", modelID: "" } })
    if (url.pathname === "/agent") return json(route, [{ name: "build", mode: "primary" }])
@@ -1,18 +1,19 @@
 import { expect, test } from "@playwright/test"
+import { base64Encode } from "@opencode-ai/core/util/encode"
 import { mockOpenCodeServer } from "../utils/mock-server"

-const draftID = "draft_removed_layout_preference"
-const directory = "C:/OpenCode/RemovedLayoutPreference"
+const draftID = "draft_legacy_new_session"
+const directory = "C:/OpenCode/LegacyNewSession"
 const server = `http://${process.env.PLAYWRIGHT_SERVER_HOST ?? "127.0.0.1"}:${process.env.PLAYWRIGHT_SERVER_PORT ?? "4096"}`

-test("ignores persisted old layout preferences when opening drafts", async ({ page }) => {
+test("redirects a draft to the legacy new-session route", async ({ page }) => {
  await mockOpenCodeServer(page, {
    directory,
    project: {
-      id: "proj_removed_layout_preference",
+      id: "proj_legacy_new_session",
      worktree: directory,
      vcs: "git",
-      name: "removed-layout-preference",
+      name: "legacy-new-session",
      time: { created: 1700000000000, updated: 1700000000000 },
      sandboxes: [],
    },
@@ -23,6 +24,7 @@ test("ignores persisted old layout preferences when opening drafts", async ({ pa
  await page.addInitScript(
    ({ directory, draftID, server }) => {
      localStorage.setItem("settings.v3", JSON.stringify({ general: { newLayoutDesigns: false } }))
+      localStorage.setItem("app-version.v1", JSON.stringify({ version: "1.17.20" }))
      localStorage.setItem(
        "opencode.window.browser.dat:tabs",
        JSON.stringify([{ type: "draft", draftID, server, directory }]),
@@ -33,7 +35,7 @@ test("ignores persisted old layout preferences when opening drafts", async ({ pa

  await page.goto(`/new-session?draftId=${draftID}`)

-  await expect(page).toHaveURL(`/new-session?draftId=${draftID}`)
-  await expect(page.locator("body")).toHaveAttribute("data-new-layout", "")
-  await expect(page.getByRole("textbox", { name: "Prompt" })).toBeVisible()
+  await expect(page).toHaveURL(`/${base64Encode(directory)}/session`)
+  await expect(page.locator("header[data-tauri-drag-region]")).toBeVisible()
+  await expect(page.locator('[data-component="prompt-input"]')).toBeVisible()
 })
@@ -1,60 +0,0 @@
-import { expect, test } from "@playwright/test"
-import type { Page } from "@playwright/test"
-import { fixture, pageMessages } from "../smoke/session-timeline.fixture"
-import { mockOpenCodeServer } from "../utils/mock-server"
-import { expectAppVisible } from "../utils/waits"
-
-const NAMES = ["alpha-service", "bravo-web", "charlie-api", "delta-tools", "echo-infra", "foxtrot-docs"]
-const worktrees = NAMES.map((name) => `/opencode-demo/${name}`)
-
-// The sixth project sits outside the five-item recent cap, so it is only reachable if the
-// dialog hands every recent project to the list filter instead of a pre-truncated slice.
-const OUTSIDE_CAP = "foxtrot-docs"
-
-// Dialog rows carry data-directory-path; the sidebar project list does not, so this
-// scopes assertions to the picker instead of matching the sidebar entry of the same name.
-const rows = (page: Page) => page.locator("[data-directory-path]")
-const row = (page: Page, name: string) => page.locator(`[data-directory-path*="${name}"]`)
-
-async function openProjectDialog(page: Page) {
-  await mockOpenCodeServer(page, {
-    sessions: fixture.sessions,
-    provider: fixture.provider,
-    directory: fixture.directory,
-    project: fixture.project,
-    pageMessages,
-    fileList: () => [],
-    findFiles: () => [],
-  })
-  await page.addInitScript((dirs) => {
-    localStorage.setItem(
-      "opencode.global.dat:server",
-      JSON.stringify({
-        projects: { local: dirs.map((worktree: string) => ({ worktree, expanded: false })) },
-        lastProject: {},
-      }),
-    )
-  }, worktrees)
-  await page.goto("/")
-  const add = page.getByRole("button", { name: "Add project" }).first()
-  await expectAppVisible(add)
-  await add.click()
-  await expect(rows(page)).toHaveCount(5)
-  return page.getByRole("textbox").last()
-}
-
-test("searches every recent project, not just the five most recent", async ({ page }) => {
-  const search = await openProjectDialog(page)
-  await expect(row(page, OUTSIDE_CAP)).toHaveCount(0)
-
-  await search.fill("foxtrot")
-
-  await expect(row(page, OUTSIDE_CAP)).toHaveCount(1)
-})
-
-test("still caps the idle recent list at five projects", async ({ page }) => {
-  await openProjectDialog(page)
-
-  await expect(row(page, NAMES[4])).toHaveCount(1)
-  await expect(row(page, OUTSIDE_CAP)).toHaveCount(0)
-})
@@ -3,7 +3,7 @@ import { expect, test, type Page, type Route } from "@playwright/test"
 import { installSseTransport } from "../utils/sse-transport"
 import { currentSession } from "../utils/mock-server"

-const serverA = `http://127.0.0.1:${process.env.PLAYWRIGHT_SERVER_PORT ?? "4096"}`
+const serverA = "http://127.0.0.1:4096"
 const serverB = "http://127.0.0.1:4097"
 const directoryA = "C:/server-a"
 const directoryB = "/home/server-b"
@@ -32,7 +32,7 @@ test("session settings use the remote server context", async ({ page }) => {
    .poll(() =>
      permissionRequests.some((request) => {
        const url = new URL(request)
-        return url.origin === serverB && url.searchParams.get("location[directory]") === directoryB
+        return url.origin === serverB && url.searchParams.get("directory") === directoryB
      }),
    )
    .toBe(true)
@@ -67,7 +67,7 @@ test("auto-accept responds for an unfocused server session", async ({ page }) =>
    .poll(() =>
      permissionRequests.some((request) => {
        const url = new URL(request)
-        return url.origin === serverA && url.searchParams.get("location[directory]") === directoryA
+        return url.origin === serverA && url.searchParams.get("directory") === directoryA
      }),
    )
    .toBe(true)
@@ -99,10 +99,10 @@ test("auto-accept responds for an unfocused server session", async ({ page }) =>
    .toEqual([
      {
        origin: serverA,
-        directory: undefined,
+        directory: directoryA,
        sessionID: sessionA.id,
        permissionID: "permission-background-a",
-        body: { reply: "once" },
+        body: { response: "once" },
      },
    ])

@@ -127,17 +127,17 @@ test("auto-accept responds for an unfocused server session", async ({ page }) =>
    .toEqual([
      {
        origin: serverA,
-        directory: undefined,
+        directory: directoryA,
        sessionID: sessionA.id,
        permissionID: "permission-background-a",
-        body: { reply: "once" },
+        body: { response: "once" },
      },
      {
        origin: serverA,
-        directory: undefined,
+        directory: directoryA,
        sessionID: childSessionA.id,
        permissionID: "permission-background-a-child",
-        body: { reply: "once" },
+        body: { response: "once" },
      },
    ])
 })
@@ -168,8 +168,8 @@ async function mockServers(page: Page, permissionRequests: string[], permissionR
    const remote = url.origin === serverB
    const directory = remote ? directoryB : directoryA
    const sessions = remote ? [sessionB] : [sessionA, childSessionA]
-    const requestDirectory = url.searchParams.get("location[directory]")
-    const response = url.pathname.match(/^\/api\/session\/([^/]+)\/permission\/([^/]+)\/reply$/)
+    const requestDirectory = url.searchParams.get("directory")
+    const response = url.pathname.match(/^\/session\/([^/]+)\/permissions\/([^/]+)$/)
    if (route.request().method() === "POST" && response) {
      permissionResponses.push({
        origin: url.origin,
@@ -181,26 +181,13 @@ async function mockServers(page: Page, permissionRequests: string[], permissionR
      return json(route, true)
    }
    if (requestDirectory && requestDirectory !== directory) return json(route, { name: "InvalidDirectory" }, 500)
-    if (url.pathname === "/api/event") return sse(route)
-    if (url.pathname === "/api/provider")
-      return json(route, {
-        location: { directory },
-        data: [
-          {
-            id: remote ? "server-b" : "server-a",
-            name: remote ? "Server B Provider" : "Server A Provider",
-            package: "test",
-          },
-        ],
-      })
-    if (url.pathname === "/api/model") return json(route, { location: { directory }, data: [model(remote)] })
-    if (url.pathname === "/api/model/default") return json(route, { location: { directory }, data: model(remote) })
-    if (url.pathname === "/api/agent") return json(route, { location: { directory }, data: [] })
-    if (url.pathname === "/api/permission/request") {
-      permissionRequests.push(url.toString())
-      return json(route, { location: { directory }, data: [] })
-    }
-    if (["/api/command", "/api/reference", "/api/question/request"].includes(url.pathname))
+    if (url.pathname === "/global/event" || url.pathname === "/event" || url.pathname === "/api/event")
+      return sse(route)
+    if (url.pathname === "/global/health") return json(route, { healthy: true })
+    if (url.pathname === "/api/provider" || url.pathname === "/api/model" || url.pathname === "/api/agent")
+      return json(route, { data: [] })
+    if (url.pathname === "/api/model/default") return json(route, { data: null })
+    if (["/api/command", "/api/reference", "/api/permission/request", "/api/question/request"].includes(url.pathname))
      return json(route, { location: { directory }, data: [] })
    if (url.pathname === "/api/mcp") return json(route, { location: { directory }, data: [] })
    if (url.pathname === "/api/mcp/resource")
@@ -224,6 +211,8 @@ async function mockServers(page: Page, permissionRequests: string[], permissionR
    if (currentSessionInfo) return json(route, { data: currentSession(currentSessionInfo) })
    if (sessions.some((session) => url.pathname === `/api/session/${session.id}/message`))
      return json(route, { data: [], cursor: {} })
+    const current = sessions.find((session) => url.pathname === `/session/${session.id}`)
+    if (current) return json(route, current)
    if (/^\/session\/[^/]+$/.test(url.pathname)) return json(route, { name: "NotFoundError" }, 404)
    if (/^\/session\/[^/]+\/message$/.test(url.pathname)) return json(route, [])
    if (/^\/session\/[^/]+\/(children|todo|diff)$/.test(url.pathname)) return json(route, [])
@@ -233,6 +222,7 @@ async function mockServers(page: Page, permissionRequests: string[], permissionR
    }
    if (["/skill", "/command", "/lsp", "/formatter", "/question", "/vcs/diff", "/pty/shells"].includes(url.pathname))
      return json(route, [])
+    if (["/global/config", "/config", "/provider/auth", "/mcp"].includes(url.pathname)) return json(route, {})
    if (url.pathname === "/provider") return json(route, provider(remote ? "server-b" : "server-a"))
    if (url.pathname === "/agent") return json(route, [{ name: "build", mode: "primary" }])
    if (url.pathname === "/project" || url.pathname === "/project/current") {
@@ -298,25 +288,6 @@ function provider(id: string) {
  }
 }

-function model(remote: boolean) {
-  const id = remote ? "server-b" : "server-a"
-  const name = remote ? "Server B" : "Server A"
-  return {
-    id,
-    modelID: id,
-    providerID: id,
-    name: `${name} Model`,
-    family: id,
-    capabilities: { tools: true, input: ["text"], output: ["text"] },
-    variants: [],
-    time: { released: Date.now() },
-    cost: [{ input: 0, output: 0, cache: { read: 0, write: 0 } }],
-    status: "active",
-    enabled: true,
-    limit: { context: 200_000, output: 32_000 },
-  }
-}
-
 function json(route: Route, body: unknown, status = 200) {
  return route.fulfill({
    status,
@@ -58,17 +58,22 @@ async function mockServers(page: Page) {
    const current = url.origin === serverA ? sessionA : sessionB
    const directory = url.searchParams.get("directory")
    if (directory && directory !== current.directory) return json(route, { name: "InvalidDirectory" }, 500)
-    if (url.pathname === "/api/event") return sse(route, url.pathname === "/api/event")
+    if (url.pathname === "/global/event" || url.pathname === "/event" || url.pathname === "/api/event")
+      return sse(route, url.pathname === "/api/event")
+    if (url.pathname === "/global/health") return json(route, {}, 404)
    if (url.pathname === "/api/health") return json(route, { pid: 1 })
    if (url.pathname === "/api/session/active")
      return json(route, { data: url.origin === serverB ? { [sessionB.id]: { type: "running" } } : {} })
    if (url.pathname === "/api/session") return json(route, { data: [currentSession(current)], cursor: {} })
    if (url.pathname === `/api/session/${current.id}`) return json(route, { data: currentSession(current) })
    if (url.pathname === `/api/session/${current.id}/message`) return json(route, { data: [], cursor: {} })
+    if (url.pathname === `/session/${current.id}`) return json(route, current)
    if (/^\/session\/[^/]+$/.test(url.pathname)) return json(route, { name: "NotFoundError" }, 404)
+    if (url.pathname === `/session/${current.id}/message`) return json(route, [])
    if (/^\/session\/[^/]+\/(children|todo|diff)$/.test(url.pathname)) return json(route, [])
    if (["/skill", "/command", "/lsp", "/formatter", "/permission", "/question", "/vcs/diff"].includes(url.pathname))
      return json(route, [])
+    if (["/global/config", "/config", "/provider/auth", "/mcp"].includes(url.pathname)) return json(route, {})
    if (url.pathname === "/provider")
      return json(route, { all: [], connected: [], default: { providerID: "", modelID: "" } })
    if (url.pathname === "/agent") return json(route, [{ name: "build", mode: "primary" }])
@@ -18,7 +18,6 @@ test("opens the comment editor when code is clicked", async ({ page }) => {
  await line.click()

  await expect(review.getByRole("textbox")).toBeVisible()
-  await expect(review.locator('[data-slot="line-comment-editor-label"]')).toHaveText("Commenting on line 2")
 })

 test("opens the comment editor when a line number is clicked", async ({ page }) => {
@@ -28,7 +27,6 @@ test("opens the comment editor when a line number is clicked", async ({ page })
  await lineNumber.click()

  await expect(review.getByRole("textbox")).toBeVisible()
-  await expect(review.locator('[data-slot="line-comment-editor-label"]')).toHaveText("Commenting on line 1")
 })

 test("opens the comment editor for a line number range", async ({ page }) => {
@@ -38,10 +36,15 @@ test("opens the comment editor for a line number range", async ({ page }) => {
  await expectAppVisible(start)
  await expectAppVisible(end)

-  await start.dragTo(end)
+  const from = await start.boundingBox()
+  const to = await end.boundingBox()
+  if (!from || !to) throw new Error("Missing line number bounds")
+  await page.mouse.move(from.x + from.width / 2, from.y + from.height / 2)
+  await page.mouse.down()
+  await page.mouse.move(to.x + to.width / 2, to.y + to.height / 2)
+  await page.mouse.up()

  await expect(review.getByRole("textbox")).toBeVisible()
-  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 }) => {
@@ -51,38 +54,31 @@ test("shows a comment button when a line number is hovered", async ({ page }) =>

  const comment = review.getByRole("button", { name: "Comment", exact: true })
  await expect(async () => {
+    await page.mouse.move(0, 0)
    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")
+    await expect(comment).toBeVisible({ timeout: 500 })
+    await comment.click({ timeout: 500 })
+  }).toPass()
  await expect(review.getByRole("textbox")).toBeVisible()
-  await expect(review.locator('[data-slot="line-comment-editor-label"]')).toHaveText("Commenting on line 1")
 })

 test("stages a submitted line comment in the prompt context", async ({ page }) => {
+  const requests: string[] = []
  page.on("request", (request) => {
-    expect.soft(request.method(), `unexpected ${request.method()} ${new URL(request.url()).pathname}`).toBe("GET")
+    if (request.method() !== "GET") requests.push(`${request.method()} ${new URL(request.url()).pathname}`)
  })

  const review = page.locator('[data-component="session-review"]')
  await review.getByText("export const value = 'after'", { exact: true }).click()
-  const textbox = review.getByRole("textbox")
-  await expect(textbox).toBeVisible()
-  await expect(review.locator('[data-slot="line-comment-editor-label"]')).toHaveText("Commenting on line 2")
-  await textbox.fill("Use the existing value instead")
-  const submit = review.locator('[data-slot="line-comment-action"][data-variant="primary"]')
-  await expect(submit).toBeEnabled()
-  await submit.click()
+  await review.getByRole("textbox").fill("Use the existing value instead")
+  await review.locator('[data-slot="line-comment-action"][data-variant="primary"]').click()

  await expect(review.getByText("Use the existing value instead", { exact: true })).toBeVisible()
  await page.getByRole("tab", { name: "Session" }).click()
  const context = page.getByText("Use the existing value instead", { exact: true }).last()
  await expect(context).toBeVisible()
  await expect(context.locator("..")).toContainText("review.ts:2")
+  expect(requests).toEqual([])
 })

 async function openReview(page: Page) {
@@ -148,22 +144,15 @@ async function openReview(page: Page) {

  await page.goto(`/${base64Encode(directory)}/session/${sessionID}`)
  await expectSessionTitle(page, title)
-  const changes = page.getByRole("tab", { name: "Changes" })
-  const diffResponse = page.waitForResponse(
-    (response) =>
-      response.request().method() === "GET" && response.ok() && new URL(response.url()).pathname === "/api/vcs/diff",
-  )
-  await changes.click()
+  const diffResponse = page.waitForResponse((response) => new URL(response.url()).pathname === "/api/vcs/diff")
+  await page.getByRole("tab", { name: "Changes" }).click()
  expect((await (await diffResponse).json()).data).toHaveLength(1)
-  await expect(page.getByRole("tab", { selected: true })).toHaveAccessibleName(/Files Changed/)

  const review = page.locator('[data-component="session-review"]')
  await expectAppVisible(review)
-  const file = review.locator('[data-file="src/review.ts"]')
-  await expectAppVisible(file)
-  const trigger = file.getByRole("button", { expanded: false })
-  await expect(trigger).toHaveCount(1)
-  await trigger.click()
-  await expect(file.getByRole("button", { expanded: true })).toBeVisible()
-  await expect(file.getByText("export const value = 'after'", { exact: true })).toBeVisible()
+  await review
+    .getByRole("heading", { name: /review\.ts/ })
+    .getByRole("button")
+    .first()
+    .click()
 }
@@ -14,7 +14,6 @@ test.use({ viewport: { width: 1440, height: 900 } })
 test("opens and searches project files inline", async ({ page }) => {
  const searches: { query: string; dirs?: string; limit?: number }[] = []
  await mockOpenCodeServer(page, {
-    protocol: "v2",
    directory,
    project: {
      id: projectID,
@@ -128,7 +127,7 @@ test("opens and searches project files inline", async ({ page }) => {
  await expect(panel.getByRole("tab", { name: "nested.ts" })).toHaveAttribute("data-selected", "")
  await expect(sidebarToggle).toBeEnabled()
  await expect(panel.getByText("contents:src/nested.ts", { exact: true })).toBeVisible()
-  expect(searches).toContainEqual({ query: "nested", dirs: "file", limit: 200 })
+  expect(searches).toContainEqual({ query: "nested", dirs: "false", limit: 200 })

  await panel.getByRole("button", { name: "Open file" }).click()
  await expect(panel.getByRole("tab", { name: "nested.ts" })).toHaveCount(1)
@@ -19,25 +19,36 @@ test("restores review mode and selected file per session", async ({ page }) => {
  await expectSessionTitle(page, titleA)
  await page.getByRole("button", { name: "Toggle review" }).click()

-  await selectFile(page, "alpha.ts")
+  await selectMode(page, "Git changes", "Branch changes")
+  await selectFile(page, "beta.ts")

  await switchSession(page, titleB)
  await expect(page.getByRole("button", { name: "Git changes" })).toBeVisible()
  await selectFile(page, "gamma.ts")

  await switchSession(page, titleA)
+  await expect(page.getByRole("button", { name: "Branch changes" })).toBeVisible()
+  await expectSelectedFile(page, "beta.ts")
+  await selectMode(page, "Branch changes", "Git changes")
  await expectSelectedFile(page, "alpha.ts")
+  await selectMode(page, "Git changes", "Branch changes")
+  await expectSelectedFile(page, "beta.ts")

  await page.reload()
  await expectSessionTitle(page, titleA)
-  await expect(page.getByRole("button", { name: "Git changes" })).toBeVisible()
-  await expectSelectedFile(page, "alpha.ts")
+  await expect(page.getByRole("button", { name: "Branch changes" })).toBeVisible()
+  await expectSelectedFile(page, "beta.ts")

  await switchSession(page, titleB)
  await expect(page.getByRole("button", { name: "Git changes" })).toBeVisible()
  await expectSelectedFile(page, "gamma.ts")
 })

+async function selectMode(page: Page, current: string, next: string) {
+  await page.getByRole("button", { name: current }).click()
+  await page.getByRole("option", { name: next }).dispatchEvent("click")
+}
+
 async function selectFile(page: Page, file: string) {
  await page.getByRole("button", { name: file }).click()
  await expectSelectedFile(page, file)
@@ -54,7 +65,7 @@ async function switchSession(page: Page, title: string) {

 async function setup(page: Page) {
  await mockOpenCodeServer(page, {
-    protocol: "v2",
+    protocol: "v1",
    directory,
    project: {
      id: projectID,
@@ -78,27 +89,22 @@ async function setup(page: Page) {
    sessions: [session(sessionA, titleA, 1700000000000), session(sessionB, titleB, 1700000001000)],
    pageMessages: () => ({ items: [] }),
  })
-  await page.route(/\/api\/vcs(?:\?.*)?$/, (route) =>
+  await page.route(/\/vcs(?:\?.*)?$/, (route) =>
    route.fulfill({
      status: 200,
      contentType: "application/json",
-      body: JSON.stringify({
-        location: { directory, project: { id: projectID, directory, canonical: directory } },
-        data: { branch: "feature", defaultBranch: "dev" },
-      }),
+      body: JSON.stringify({ branch: "feature", default_branch: "dev" }),
    }),
  )
-  await page.route("**/api/vcs/diff**", (route) =>
+  await page.route("**/vcs/diff**", (route) =>
    route.fulfill({
      status: 200,
      contentType: "application/json",
-      body: JSON.stringify({
-        location: { directory, project: { id: projectID, directory, canonical: directory } },
-        data:
-          new URL(route.request().url()).searchParams.get("mode") === "branch"
-            ? [diff("src/alpha.ts"), diff("src/beta.ts")]
-            : [diff("src/alpha.ts"), diff("src/gamma.ts")],
-      }),
+      body: JSON.stringify(
+        new URL(route.request().url()).searchParams.get("mode") === "branch"
+          ? [diff("src/alpha.ts"), diff("src/beta.ts")]
+          : [diff("src/alpha.ts"), diff("src/gamma.ts")],
+      ),
    }),
  )
  await page.addInitScript(
@@ -1,6 +1,6 @@
 import { expect, test, type Page } from "@playwright/test"
 import { mockOpenCodeServer } from "../utils/mock-server"
-import { expectSessionReady } from "../utils/waits"
+import { expectSessionTitle } from "../utils/waits"

 const directory = "C:/OpenCode/ReviewTerminalStacked"
 const projectID = "proj_review_terminal_stacked"
@@ -19,9 +19,13 @@ const branchDiffs = [

 test("keeps the review tree and terminal sized when both panels are open", async ({ page }) => {
  test.setTimeout(120_000)
+  const events: Array<{ directory: string; payload: Record<string, unknown> }> = []
+  const sessionStatus = { [sessionID]: { type: "idle" as "busy" | "idle" } }
+  let detailVersion = 1
+  let detailFailures = 1
  await page.setViewportSize({ width: 1400, height: 900 })
  await mockOpenCodeServer(page, {
-    protocol: "v2",
+    protocol: "v1",
    directory,
    project: {
      id: projectID,
@@ -53,27 +57,38 @@ test("keeps the review tree and terminal sized when both panels are open", async
        time: { created: 1700000000000, updated: 1700000000000 },
      },
    ],
-    sessionStatus: { [sessionID]: { type: "idle" } },
+    sessionStatus: () => sessionStatus,
    pageMessages: () => ({ items: [] }),
+    events: () => events.splice(0, 1),
+    eventRetry: 16,
  })
-  await page.route(/\/api\/vcs(?:\?.*)?$/, (route) =>
+  await page.route(/\/vcs(?:\?.*)?$/, (route) =>
    route.fulfill({
      status: 200,
      contentType: "application/json",
      body: JSON.stringify({
-        location: { directory, project: { id: projectID, directory, canonical: directory } },
-        data: { branch: "review-pane-performance", defaultBranch: "dev" },
+        branch: "review-pane-performance",
+        default_branch: "dev",
      }),
    }),
  )
-  await page.route("**/api/vcs/diff**", (route) => {
+  await page.route("**/vcs/diff**", (route) => {
+    const url = new URL(route.request().url())
+    const scope = url.searchParams.get("directory")?.replaceAll("\\", "/")
+    const detail = scope?.endsWith("/src/branch/d00027")
+    if (detail && detailFailures-- > 0) return route.fulfill({ status: 500, body: "retry detail" })
    return route.fulfill({
      status: 200,
      contentType: "application/json",
-      body: JSON.stringify({
-        location: { directory, project: { id: projectID, directory, canonical: directory } },
-        data: branchDiffs,
-      }),
+      body: JSON.stringify(
+        url.searchParams.get("mode") === "branch"
+          ? detail
+            ? branchDiffs
+                .filter((diff) => diff.file.startsWith("src/branch/d00027/"))
+                .map((diff) => fileDiff(diff.file, diff.additions, true, detailVersion))
+            : branchDiffs
+          : Array.from({ length: 7 }, (_, index) => fileDiff(`src/git-${index}.ts`, 1)),
+      ),
    })
  })
  await page.route("**/pty*", (route) =>
@@ -94,7 +109,7 @@ test("keeps the review tree and terminal sized when both panels are open", async
      }),
    }),
  )
-  await page.route("**/api/pty/pty_review_terminal*", (route) =>
+  await page.route("**/pty/pty_review_terminal*", (route) =>
    route.fulfill({
      status: 200,
      contentType: "application/json",
@@ -112,7 +127,7 @@ test("keeps the review tree and terminal sized when both panels are open", async
      }),
    }),
  )
-  await page.route("**/api/pty/pty_review_terminal/connect-token*", (route) =>
+  await page.route("**/pty/pty_review_terminal/connect-token*", (route) =>
    route.fulfill({
      status: 200,
      contentType: "application/json",
@@ -122,7 +137,7 @@ test("keeps the review tree and terminal sized when both panels are open", async
      }),
    }),
  )
-  await page.routeWebSocket("**/api/pty/pty_review_terminal/connect", () => undefined)
+  await page.routeWebSocket("**/pty/pty_review_terminal/connect", () => undefined)
  await page.addInitScript(() => {
    localStorage.setItem("settings.v3", JSON.stringify({ general: { newLayoutDesigns: true } }))
    localStorage.setItem(
@@ -132,17 +147,102 @@ test("keeps the review tree and terminal sized when both panels are open", async
  })

  await page.goto(`/${base64Encode(directory)}/session/${sessionID}`)
-  const server = `http://${process.env.PLAYWRIGHT_SERVER_HOST ?? "127.0.0.1"}:${process.env.PLAYWRIGHT_SERVER_PORT ?? "4096"}`
-  await expectSessionReady(page, { server, sessionID, title })
+  await expectSessionTitle(page, title)
  await expect(page.locator("#review-panel")).toBeVisible()
-  await expectTree(page, 2_773, "action.yml")
+  await expectTree(page, 8, "git-0.ts")
+
+  await selectMode(page, "Git changes", "Branch changes")
  await expect(page.locator("#session-side-panel-review-tab")).toHaveText("Files Changed 2740")
  await page.keyboard.press("Control+Backquote")
  await expect(page.locator("#terminal-panel")).toBeVisible()
  await expectTree(page, 2_773, "action.yml")
  await expectStackGeometry(page)
+
+  const treeViewport = page.locator('#review-panel [data-slot="session-review-v2-sidebar-tree"] .scroll-view__viewport')
+  await treeViewport.hover()
+  await page.mouse.wheel(0, 100_000)
+  await expect
+    .poll(() => treeViewport.evaluate((element) => element.scrollHeight - element.clientHeight - element.scrollTop))
+    .toBeLessThanOrEqual(1)
+  const lastFile = page.getByRole("button", { name: "generated-2738.ts" })
+  await expect(lastFile).toBeVisible()
+  const bottomGap = await lastFile.evaluate((element) => {
+    const viewport = element.closest<HTMLElement>(".scroll-view__viewport")!.getBoundingClientRect()
+    return viewport.bottom - element.getBoundingClientRect().bottom
+  })
+  expect(bottomGap).toBeGreaterThanOrEqual(0)
+  expect(bottomGap).toBeLessThanOrEqual(16)
+  const lazyDiff = page.waitForRequest((request) => {
+    const url = new URL(request.url())
+    return (
+      url.pathname === "/vcs/diff" &&
+      url.searchParams.get("directory")?.replaceAll("\\", "/").endsWith("/src/branch/d00027") === true
+    )
+  })
+  await lastFile.click()
+  await lazyDiff
+  const preview = page.locator('[data-slot="session-review-v2-diff-scroll"]')
+  await expect(preview).toContainText("after-1")
+  detailVersion = 2
+  sessionStatus[sessionID] = { type: "busy" }
+  events.push(statusEvent("busy"))
+  await expect(page.getByRole("button", { name: "Stop" })).toBeVisible()
+  const refreshedDiff = page.waitForRequest((request) => {
+    const url = new URL(request.url())
+    return (
+      url.pathname === "/vcs/diff" &&
+      url.searchParams.get("directory")?.replaceAll("\\", "/").endsWith("/src/branch/d00027") === true
+    )
+  })
+  sessionStatus[sessionID] = { type: "idle" }
+  events.push(statusEvent("idle"))
+  await refreshedDiff
+  await expect(preview).toContainText("after-2")
+  await selectMode(page, "Branch changes", "Git changes")
+  await expectTree(page, 8, "git-0.ts")
+  await page.getByRole("button", { name: "git-0.ts" }).click()
+  await selectMode(page, "Git changes", "Branch changes")
+  await expectTree(page, 2_773, "action.yml")
+
+  const filter = page.getByRole("searchbox", { name: "Filter files" })
+  await filter.fill("generated-2738")
+  await expectTree(page, 1, "generated-2738.ts")
+  await filter.fill("")
+  await expectTree(page, 2_773, "action.yml")
+
+  await page.getByRole("button", { name: "Toggle file tree" }).click()
+  await expect(page.locator('[data-slot="session-review-v2-sidebar"]')).toHaveCount(0)
+  await expect(page.locator('#review-panel [data-component="file-tree-v2"]')).toHaveCount(0)
+  await page.getByRole("button", { name: "Toggle file tree" }).click()
+  await expectTree(page, 2_773, "action.yml")
+
+  await page.keyboard.press("Control+Backquote")
+  await expect(page.locator("#terminal-panel")).toHaveCount(0)
+  await expectTree(page, 2_773, "action.yml")
+  await page.keyboard.press("Control+Backquote")
+  await expect(page.locator("#terminal-panel")).toBeVisible()
+  await expectTree(page, 2_773, "action.yml")
+
+  await page.getByRole("button", { name: "Toggle review" }).click()
+  await expect(page.locator("#review-panel")).toHaveCount(0)
+  await page.getByRole("button", { name: "Toggle review" }).click()
+  await expectTree(page, 2_773, "action.yml")
+  await page.setViewportSize({ width: 1_000, height: 700 })
+  await expectTree(page, 2_773, "action.yml")
+  await expectStackGeometry(page)
+  await page.setViewportSize({ width: 1_000, height: 120 })
+  await page.setViewportSize({ width: 1_400, height: 900 })
+  await expectTree(page, 2_773, "action.yml")
+  await expectStackGeometry(page)
 })

+async function selectMode(page: Page, current: string, next: string) {
+  await page.getByRole("button", { name: current }).click()
+  const option = page.getByRole("option", { name: next })
+  await expect(option).toBeVisible()
+  await option.click()
+}
+
 async function expectTree(page: Page, total: number, file: string) {
  await expectMountedTree(page, total)
  await expect(page.getByRole("button", { name: file })).toBeVisible()
@@ -171,32 +271,36 @@ async function expectStackGeometry(page: Page) {
    const terminal = document.querySelector<HTMLElement>("#terminal-panel")!
    const reviewParent = review.parentElement!.getBoundingClientRect()
    const terminalParent = terminal.parentElement!.getBoundingClientRect()
-    const sidebar = review.querySelector<HTMLElement>('[data-slot="session-review-v2-sidebar"]')!
    return {
      review: review.getBoundingClientRect().height,
      reviewParent: reviewParent.height,
      terminal: terminal.getBoundingClientRect().height,
      terminalParent: terminalParent.height,
-      sidebar: sidebar.getBoundingClientRect().width,
    }
  })
  expect(Math.abs(geometry.review - geometry.reviewParent)).toBeLessThanOrEqual(1)
  expect(Math.abs(geometry.terminal - geometry.terminalParent)).toBeLessThanOrEqual(1)
-  expect(geometry.sidebar).toBeGreaterThanOrEqual(240)
 }

 function base64Encode(value: string) {
  return Buffer.from(value, "utf8").toString("base64").replace(/\+/g, "-").replace(/\//g, "_").replace(/=/g, "")
 }

-function fileDiff(file: string, additions: number, loaded = true) {
+function statusEvent(type: "busy" | "idle") {
+  return {
+    directory,
+    payload: { type: "session.status", properties: { sessionID, status: { type } } },
+  }
+}
+
+function fileDiff(file: string, additions: number, loaded = true, version = 1) {
  return {
    file,
    additions,
    deletions: 0,
    status: "modified",
    patch: loaded
-      ? `diff --git a/${file} b/${file}\n--- a/${file}\n+++ b/${file}\n@@ -1 +1 @@\n-export const value = 'before'\n+export const value = 'after'\n`
+      ? `diff --git a/${file} b/${file}\n--- a/${file}\n+++ b/${file}\n@@ -1 +1 @@\n-export const value = 'before'\n+export const value = 'after-${version}'\n`
      : `diff --git a/${file} b/${file}\n--- a/${file}\n+++ b/${file}`,
  }
 }
@@ -52,7 +52,7 @@ const editPart = {
  sessionID,
  messageID: assistantMessageID,
  type: "tool",
-  callID: editPartID,
+  callID: "call_edit_regression",
  tool: "edit",
  state: {
    status: "completed",
@@ -14,8 +14,8 @@ const projectID = "proj_context_resize_regression"
 const sessionID = "ses_context_resize_regression"
 const title = "Context resize regression"
 const model = { providerID: "opencode", modelID: "claude-opus-4-6", variant: "max" }
-const contextIDs = ["ctx_0100_read", "ctx_0101_glob", "ctx_0102_grep", "ctx_0103_list"]
-const followingTextID = `${id("msg_assistant", 10)}:text:0`
+const contextIDs = ["prt_0100_read", "prt_0101_glob", "prt_0102_grep", "prt_0103_list"]
+const followingTextID = "prt_0104_text"

 type Message = {
  info: Record<string, unknown> & { id: string; role: "user" | "assistant" }
@@ -295,7 +295,7 @@ function contextTool(
    sessionID,
    messageID,
    type: "tool",
-    callID: partID,
+    callID: `call_${partID}`,
    tool,
    state: {
      status,
@@ -10,6 +10,7 @@ import {
  status,
  textPart,
  title,
+  userID,
  userMessage,
 } from "../performance/timeline-stability/fixture"
 import { mockOpenCodeServer } from "../utils/mock-server"
@@ -18,22 +19,18 @@ import { expectSessionTitle } from "../utils/waits"

 const initialPageSize = 20
 const historyPageSize = 200
-const messages = Array.from({ length: initialPageSize + 1 }, (_, index) => {
-  const id = `msg_${String(index + 1001).padStart(4, "0")}_history_root_user`
-  return [
-    userMessage(undefined, { id, created: 1700000000000 + index * 2_000 }),
-    assistantMessage([textPart(`prt_history_root_${index}`, `Assistant response ${index}`)], {
-      id: `msg_${String(index + 1001).padStart(4, "0")}_history_root_assistant`,
-      parentID: id,
-      created: 1700000001000 + index * 2_000,
-      completed: index < initialPageSize,
-    }),
-  ]
-}).flat()
-const assistants = messages.filter((message) => message.info.role === "assistant")
+const assistants = Array.from({ length: initialPageSize + 1 }, (_, index) =>
+  assistantMessage([textPart(`prt_history_root_${index}`, `Assistant response ${index}`)], {
+    id: `msg_${String(index + 1001).padStart(4, "0")}_history_root_assistant`,
+    parentID: userID,
+    created: 1700000001000 + index * 1_000,
+    completed: index < initialPageSize,
+  }),
+)
+const messages = [userMessage(), ...assistants]
 const lastAssistant = assistants.at(-1)!
-const lastPartID = `${assistants.at(-1)!.info.id}:text:0`
-const userPartID = `${messages.at(-2)!.info.id}:text:0`
+const lastPartID = assistants.at(-1)!.parts[0]!.id
+const userPartID = `prt_${userID}_text`
 const completed = {
  ...lastAssistant.info,
  time: { ...lastAssistant.info.time, completed: lastAssistant.info.time.created + 15_000 },
@@ -62,7 +59,6 @@ for (const scenario of scenarios) {
      retry: 20,
    })
    await mockOpenCodeServer(page, {
-      protocol: "v2",
      directory,
      project: project(),
      provider: {
@@ -158,23 +154,15 @@ for (const scenario of scenarios) {
    await expectSessionTitle(page, title)
    await expect(page.locator(`[data-timeline-part-id="${lastPartID}"]`)).toBeVisible()
    await expect(page.locator(`[data-timeline-part-id="${userPartID}"]`)).toBeVisible()
-    const viewport = page.locator(".scroll-view__viewport", { has: page.locator("[data-timeline-row]") })
-    await viewport.hover()
-    const deadline = Date.now() + 10_000
-    while (requests.filter((request) => request.phase === "start").length < 2) {
-      if (Date.now() >= deadline) throw new Error("Timed out scrolling to the history boundary")
-      await page.mouse.wheel(0, -240)
-      await page.waitForTimeout(20)
-    }
+    await expect.poll(() => requests.filter((request) => request.phase === "start").length).toBe(2)
    expect(requests.filter((request) => request.phase === "end")).toHaveLength(1)
-    expect(sequence.slice(0, 3)).toEqual([
+    expect(sequence.slice(0, 4)).toEqual([
      "messages:start:latest",
      "messages:end:latest",
+      `message:${userID}`,
      `messages:start:${messages.at(-initialPageSize)!.info.id}`,
    ])
-    await expect(page.locator('[data-timeline-part-id*="_history_root_assistant:text:0"]')).toHaveCount(
-      initialPageSize / 2,
-    )
+    await expect(page.locator('[data-timeline-part-id^="prt_history_root_"]')).toHaveCount(initialPageSize)
    await page.evaluate(() => {
      ;(
        window as Window & {
@@ -186,9 +174,7 @@ for (const scenario of scenarios) {
    expect(await visibleContentHidden(page)).toBe(false)
    const beforeHistory = await probeSamples(page)
    history.resolve()
-    await expect
-      .poll(() => page.locator('[data-timeline-part-id*="_history_root_assistant:text:0"]').count())
-      .toBeGreaterThan(initialPageSize / 2)
+    await expect(page.locator('[data-timeline-part-id^="prt_history_root_"]')).toHaveCount(assistants.length)
    await expect.poll(() => requests.filter((request) => request.phase === "end").length).toBe(2)
    await expect(page.getByRole("button", { name: "Stop" })).toBeVisible()
    await waitForProbeSamples(page, beforeHistory)
@@ -196,7 +182,7 @@ for (const scenario of scenarios) {
      { before: undefined, limit: initialPageSize },
      { before: messages.at(-initialPageSize)!.info.id, limit: historyPageSize },
    ])
-    expect(roots).toEqual([])
+    expect(roots).toEqual([{ sessionID, messageID: userID }])

    const message = messageUpdated(scenario.info)
    const idle = status("idle")
@@ -103,7 +103,7 @@ test("moves busy through retry and recovery to final idle content", async ({ pag
  await timeline.send(status("idle"), 350)
  await expect(page.locator('[data-timeline-row="Retry"]')).toHaveCount(0)
  await expect(page.locator('[data-timeline-row="Thinking"]')).toHaveCount(0)
-  await expect(page.locator('[data-timeline-part-id="prt_recovered"]')).toContainText("Recovered response")
+  await expect(page.locator('[data-timeline-row="DiffSummary"]')).toBeVisible()
 })

 function lines(count: number) {
--- a/Show More
+++ b/Show More