fix(core): stream shell progress tail

fix(tui): restore selected action styling, fix subagent list (#37371 )
feat(tui): add message navigation shortcuts (#37362 )
2026-07-16 20:25:00 +00:00 · 2026-07-16 16:20:16 -04:00 · 2026-07-16 16:18:18 -04:00 · 2026-07-16 21:45:40 +02:00 · 2026-07-16 15:31:42 -04:00 · 2026-07-16 21:27:13 +02:00
195 changed files with 5761 additions and 3199 deletions
@@ -121,53 +121,6 @@ jobs:
    outputs:
      version: ${{ needs.version.outputs.version }}

-  build-node-cli:
-    needs: version
-    if: github.repository == 'anomalyco/opencode'
-    strategy:
-      fail-fast: false
-      matrix:
-        settings:
-          - target: linux-arm64
-            host: blacksmith-4vcpu-ubuntu-2404-arm
-          - target: linux-x64
-            host: blacksmith-4vcpu-ubuntu-2404
-          - target: darwin-arm64
-            host: macos-26
-          - target: windows-arm64
-            host: windows-2025
-          - target: windows-x64
-            host: blacksmith-4vcpu-windows-2025
-    runs-on: ${{ matrix.settings.host }}
-    defaults:
-      run:
-        shell: bash
-    steps:
-      - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
-
-      - uses: ./.github/actions/setup-bun
-
-      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
-        with:
-          node-version: "26.4.0"
-
-      - name: Build
-        run: bun packages/cli/script/build-node.ts --target=${{ matrix.settings.target }} --outdir=dist/node
-        env:
-          OPENCODE_VERSION: ${{ needs.version.outputs.version }}
-          OPENCODE_RELEASE: ${{ needs.version.outputs.release }}
-
-      - name: Verify service lifecycle
-        if: matrix.settings.target != 'windows-arm64'
-        working-directory: packages/cli
-        run: bun run script/service-smoke.ts --node
-
-      - uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
-        with:
-          name: opencode-node-cli-${{ matrix.settings.target }}
-          path: packages/cli/dist/node/cli-node-*
-          if-no-files-found: error
-
  sign-cli-windows:
    needs:
      - build-cli
@@ -460,7 +413,6 @@ jobs:
    needs:
      - version
      - build-cli
-      - build-node-cli
      - sign-cli-windows
      - build-electron
    if: always() && !failure() && !cancelled()
@@ -509,12 +461,6 @@ jobs:
          name: opencode-preview-cli
          path: packages/cli/dist

-      - uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4.3.0
-        with:
-          pattern: opencode-node-cli-*
-          path: packages/cli/dist/node
-          merge-multiple: true
-
      - uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4.3.0
        if: needs.version.outputs.release
        with:
@@ -78,20 +78,6 @@ jobs:
          bun run script/build.ts --single --skip-install
          bun run script/service-smoke.ts

-      - name: Setup Node build runtime
-        if: always()
-        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
-        with:
-          node-version: "26.4.0"
-
-      - name: Verify Node build
-        if: always()
-        timeout-minutes: 15
-        working-directory: packages/cli
-        run: |
-          bun run script/build-node.ts --single --skip-install --outdir=dist/node
-          bun run script/service-smoke.ts --node
-
      - name: Check generated client
        if: runner.os == 'Linux'
        working-directory: packages/client
@@ -11,7 +11,6 @@ node_modules
 playground
 tmp
 dist
-dist-node
 ts-dist
 .turbo
 .typecheck-profiles
@@ -26,7 +25,6 @@ Session.vim
 a.out
 target
 .scripts
-.cache
 .direnv/

 # Local dev files
@@ -145,28 +145,14 @@
        "solid-js": "catalog:",
        "strip-ansi": "7.1.2",
        "uqr": "0.1.3",
-        "ws": "8.21.0",
      },
      "devDependencies": {
-        "@lydell/node-pty-darwin-arm64": "1.2.0-beta.12",
-        "@lydell/node-pty-darwin-x64": "1.2.0-beta.12",
-        "@lydell/node-pty-linux-arm64": "1.2.0-beta.12",
-        "@lydell/node-pty-linux-x64": "1.2.0-beta.12",
-        "@lydell/node-pty-win32-arm64": "1.2.0-beta.12",
-        "@lydell/node-pty-win32-x64": "1.2.0-beta.12",
        "@opencode-ai/protocol": "workspace:*",
        "@opencode-ai/script": "workspace:*",
-        "@parcel/watcher-darwin-arm64": "2.5.1",
-        "@parcel/watcher-linux-arm64-glibc": "2.5.1",
-        "@parcel/watcher-linux-x64-glibc": "2.5.1",
-        "@parcel/watcher-win32-arm64": "2.5.1",
-        "@parcel/watcher-win32-x64": "2.5.1",
        "@tsconfig/bun": "catalog:",
        "@types/bun": "catalog:",
        "@types/semver": "catalog:",
        "@typescript/native-preview": "catalog:",
-        "vite": "catalog:",
-        "vite-plugin-solid": "catalog:",
      },
    },
    "packages/client": {
@@ -401,7 +387,6 @@
        "mime-types": "3.0.2",
        "minimatch": "10.2.5",
        "npm-package-arg": "13.0.2",
-        "resolve.exports": "catalog:",
        "semver": "^7.6.3",
        "turndown": "7.2.0",
        "venice-ai-sdk-provider": "2.1.1",
@@ -754,9 +739,9 @@
        "typescript": "catalog:",
      },
      "peerDependencies": {
-        "@opentui/core": "0.0.0-20260717-0afb0c25",
-        "@opentui/keymap": "0.0.0-20260717-0afb0c25",
-        "@opentui/solid": "0.0.0-20260717-0afb0c25",
+        "@opentui/core": ">=0.4.3",
+        "@opentui/keymap": ">=0.4.3",
+        "@opentui/solid": ">=0.4.3",
      },
      "optionalPeers": [
        "@opentui/core",
@@ -1036,12 +1021,10 @@
        "diff": "catalog:",
        "effect": "catalog:",
        "fuzzysort": "catalog:",
-        "get-east-asian-width": "catalog:",
        "open": "10.1.2",
        "opentui-spinner": "catalog:",
        "remeda": "catalog:",
        "solid-js": "catalog:",
-        "string-width": "catalog:",
        "strip-ansi": "7.1.2",
        "uqr": "0.1.3",
      },
@@ -1188,9 +1171,9 @@
    "pacote@21.5.0": "patches/pacote@21.5.0.patch",
  },
  "overrides": {
-    "@opentui/core": "0.0.0-20260717-0afb0c25",
-    "@opentui/keymap": "0.0.0-20260717-0afb0c25",
-    "@opentui/solid": "0.0.0-20260717-0afb0c25",
+    "@opentui/core": "catalog:",
+    "@opentui/keymap": "catalog:",
+    "@opentui/solid": "catalog:",
    "@types/bun": "catalog:",
    "@types/node": "catalog:",
  },
@@ -1207,9 +1190,9 @@
    "@npmcli/arborist": "9.4.0",
    "@octokit/rest": "22.0.0",
    "@openauthjs/openauth": "0.0.0-20250322224806",
-    "@opentui/core": "0.0.0-20260717-0afb0c25",
-    "@opentui/keymap": "0.0.0-20260717-0afb0c25",
-    "@opentui/solid": "0.0.0-20260717-0afb0c25",
+    "@opentui/core": "0.4.3",
+    "@opentui/keymap": "0.4.3",
+    "@opentui/solid": "0.4.3",
    "@pierre/diffs": "1.2.10",
    "@playwright/test": "1.59.1",
    "@sentry/solid": "10.36.0",
@@ -1237,7 +1220,6 @@
    "drizzle-orm": "1.0.0-rc.2",
    "effect": "4.0.0-beta.83",
    "fuzzysort": "3.1.0",
-    "get-east-asian-width": "1.6.0",
    "hono": "4.10.7",
    "hono-openapi": "1.1.2",
    "luxon": "3.6.1",
@@ -1246,13 +1228,11 @@
    "opentui-spinner": "0.0.7",
    "remeda": "2.26.0",
    "remend": "1.3.0",
-    "resolve.exports": "2.0.3",
    "semver": "7.7.4",
    "shiki": "4.2.0",
    "solid-js": "1.9.10",
    "solid-list": "0.3.0",
    "sst": "4.13.1",
-    "string-width": "7.2.0",
    "tailwindcss": "4.1.11",
    "typescript": "5.8.2",
    "ulid": "3.0.1",
@@ -2293,27 +2273,27 @@

    "@opentelemetry/semantic-conventions": ["@opentelemetry/semantic-conventions@1.41.1", "", {}, "sha512-/UhIkaZgPutTFmQ7RnIJGgDXZmtEJ7Dvi86xNTFWcnRxVRNk/aotsqDJYeEvDP+FSMB2SdW+pQzNMcWP0rwuNA=="],

-    "@opentui/core": ["@opentui/core@0.0.0-20260717-0afb0c25", "", { "dependencies": { "bun-ffi-structs": "0.2.4", "diff": "9.0.0", "marked": "17.0.1", "string-width": "7.2.0", "strip-ansi": "7.1.2" }, "optionalDependencies": { "@opentui/core-darwin-arm64": "0.0.0-20260717-0afb0c25", "@opentui/core-darwin-x64": "0.0.0-20260717-0afb0c25", "@opentui/core-linux-arm64": "0.0.0-20260717-0afb0c25", "@opentui/core-linux-arm64-musl": "0.0.0-20260717-0afb0c25", "@opentui/core-linux-x64": "0.0.0-20260717-0afb0c25", "@opentui/core-linux-x64-musl": "0.0.0-20260717-0afb0c25", "@opentui/core-win32-arm64": "0.0.0-20260717-0afb0c25", "@opentui/core-win32-x64": "0.0.0-20260717-0afb0c25" }, "peerDependencies": { "web-tree-sitter": "0.25.10" } }, "sha512-C27k1sqoh6VP1F3i+fjhT6AOvfgzHaXe+nOtIR0s0T9OmTANQ4VmEW2ryo3+zC4zOSfraUD0Jya/YHECowBRMg=="],
+    "@opentui/core": ["@opentui/core@0.4.3", "", { "dependencies": { "bun-ffi-structs": "0.2.4", "diff": "9.0.0", "marked": "17.0.1", "string-width": "7.2.0", "strip-ansi": "7.1.2" }, "optionalDependencies": { "@opentui/core-darwin-arm64": "0.4.3", "@opentui/core-darwin-x64": "0.4.3", "@opentui/core-linux-arm64": "0.4.3", "@opentui/core-linux-arm64-musl": "0.4.3", "@opentui/core-linux-x64": "0.4.3", "@opentui/core-linux-x64-musl": "0.4.3", "@opentui/core-win32-arm64": "0.4.3", "@opentui/core-win32-x64": "0.4.3" }, "peerDependencies": { "web-tree-sitter": "0.25.10" } }, "sha512-rrJfAk13tALDqldYjhc78eWQ+aKq1iknJgffIOg3OwyZoqQo+p6gtuqyhmWvXIfQzlNUbpgpCPcxbXlhMnlaHQ=="],

-    "@opentui/core-darwin-arm64": ["@opentui/core-darwin-arm64@0.0.0-20260717-0afb0c25", "", { "os": "darwin", "cpu": "arm64" }, "sha512-LNJeXNtqtNd/FGI/4O0deL0paWhTT7d8m2XidgTiVH8BydYZDLewFMSHo4AHYeHViI3pKR/97rxhty3FZLySYA=="],
+    "@opentui/core-darwin-arm64": ["@opentui/core-darwin-arm64@0.4.3", "", { "os": "darwin", "cpu": "arm64" }, "sha512-p5+7AAxpxGuDGagyQfewKtmTFnN7THvTVY4FyKqUtJomNaHdQXPHztapNNzMx0DGWbwOUbVKzpL+yc3CZY3chQ=="],

-    "@opentui/core-darwin-x64": ["@opentui/core-darwin-x64@0.0.0-20260717-0afb0c25", "", { "os": "darwin", "cpu": "x64" }, "sha512-hgAmy1WS/g2K8t7iLXQDiWJaNo6P1QcyIZDHCK1HZz0/3Zaz8igCXggqo4JrZ53s2rWPV2Eo/yDtIy3034yErg=="],
+    "@opentui/core-darwin-x64": ["@opentui/core-darwin-x64@0.4.3", "", { "os": "darwin", "cpu": "x64" }, "sha512-+fh0vEUE0lwVC7RW5ijYLRlTLp5NfvCRj8SzxDVd7IL2j2ssB6YXcfIbXq2EW7UGnrejwPRXf1tgUrIXW9KmOw=="],

-    "@opentui/core-linux-arm64": ["@opentui/core-linux-arm64@0.0.0-20260717-0afb0c25", "", { "os": "linux", "cpu": "arm64" }, "sha512-oFWULMWrHquagwZ7avpSScvhStP0dn+kAWz4Zrj0VVcVAw9DiVc7RxRGw/r6jVAo1W8wR2TSMsDbJp3FkbLCTg=="],
+    "@opentui/core-linux-arm64": ["@opentui/core-linux-arm64@0.4.3", "", { "os": "linux", "cpu": "arm64" }, "sha512-gl6qA5QJy6u8Cbt7gOtHbhhfMZ4qQDb0kEwFXHcMGmbnKzz4OHoq74D6tNjyvSQB9saoC7C6C0tvn2DcJOuNog=="],

-    "@opentui/core-linux-arm64-musl": ["@opentui/core-linux-arm64-musl@0.0.0-20260717-0afb0c25", "", { "os": "linux", "cpu": "arm64" }, "sha512-5ieoKyjV1yx+asSBYIL/8np3ExK+O4s9WhryRlRvAMvZSa93iEeCrYVZCtmKkP/Az/C8XUu6dSldoQIbw/BI2A=="],
+    "@opentui/core-linux-arm64-musl": ["@opentui/core-linux-arm64-musl@0.4.3", "", { "os": "linux", "cpu": "arm64" }, "sha512-8p8g8/AEq/xFGpQ7XcIFKcAqjc0QwsZcv+Ll9RbCDpUA56FGH6jfLDir0KYTNTgYXJTIrBIENI9K46VuxMUMQA=="],

-    "@opentui/core-linux-x64": ["@opentui/core-linux-x64@0.0.0-20260717-0afb0c25", "", { "os": "linux", "cpu": "x64" }, "sha512-fmEm52sLLedU4o4qTdfDAkCKH6GVCo0saaZv/tpa/Ey6AbSs+y9xMI6yiltqXPhmTPb7pd7yMFnm5Yo/oeYGXw=="],
+    "@opentui/core-linux-x64": ["@opentui/core-linux-x64@0.4.3", "", { "os": "linux", "cpu": "x64" }, "sha512-dXpJitiZdYE3hq2Pvx6e9I0uPQSOcnaLLp1pDgWAHv+3kvKSHEX//9Yr/pV/Ua6qqT7p+2D/K4vXNap/NKVo2w=="],

-    "@opentui/core-linux-x64-musl": ["@opentui/core-linux-x64-musl@0.0.0-20260717-0afb0c25", "", { "os": "linux", "cpu": "x64" }, "sha512-nrE616u1icMTqUgxP3gO4JyZzJytFafBjwX+v104iTfsS0YMxX/ailJghb465zkVlzmZ4spSOOnTPrfmYl5MhA=="],
+    "@opentui/core-linux-x64-musl": ["@opentui/core-linux-x64-musl@0.4.3", "", { "os": "linux", "cpu": "x64" }, "sha512-/QiFpCrpU2O7vy8QYmLIQYbvAtKDgmqcVjR7dGtqSzkiQk3ktNJoo5RozG7ueXnjung1Wp0nKldKxo2Csg/OrA=="],

-    "@opentui/core-win32-arm64": ["@opentui/core-win32-arm64@0.0.0-20260717-0afb0c25", "", { "os": "win32", "cpu": "arm64" }, "sha512-03muWP2Dsk2QJZXK3fRoq6ld5VATA2daBjU+nmfhpJZiayxwToBh4RYxCRm+pGmS+XjxET8PdY2YTq5Ne3Wltw=="],
+    "@opentui/core-win32-arm64": ["@opentui/core-win32-arm64@0.4.3", "", { "os": "win32", "cpu": "arm64" }, "sha512-Mx2zuOjrhm/z2SDS6RExIyjP/SnN/8QhhagxURUw0jQi/NssGSeAllu1cBAFFnhobJL5QLTE4FU4CRhUK9svgg=="],

-    "@opentui/core-win32-x64": ["@opentui/core-win32-x64@0.0.0-20260717-0afb0c25", "", { "os": "win32", "cpu": "x64" }, "sha512-qov2smWOjpiARZzCaCPjpsM+Qw0pcnKDOGLSpKrNXTwrdO3pt32q4vJYKdAoN99lC70YfcaxXaWg/ol2axJV1Q=="],
+    "@opentui/core-win32-x64": ["@opentui/core-win32-x64@0.4.3", "", { "os": "win32", "cpu": "x64" }, "sha512-NuoqvWKGXaYnmlqvu7Gg2lLI6yVMnS9OfWBvxp+7Q+McSgHFSTQmYBXaPpvQ8HikpQXE1nCeMPtuSG4PdZHe2w=="],

-    "@opentui/keymap": ["@opentui/keymap@0.0.0-20260717-0afb0c25", "", { "dependencies": { "@opentui/core": "0.0.0-20260717-0afb0c25" }, "peerDependencies": { "@opentui/react": "0.0.0-20260717-0afb0c25", "@opentui/solid": "0.0.0-20260717-0afb0c25", "react": ">=19.2.0", "solid-js": "1.9.12" }, "optionalPeers": ["@opentui/react", "@opentui/solid", "react", "solid-js"] }, "sha512-byAjR2aOZLJ4nLoHnUo45wtkP458Nlusqahxp0oZvyzYasOu2OrtZK4AUQyuFg7/ncLMP0V04KoQqT3GwBOqkg=="],
+    "@opentui/keymap": ["@opentui/keymap@0.4.3", "", { "dependencies": { "@opentui/core": "0.4.3" }, "peerDependencies": { "@opentui/react": "0.4.3", "@opentui/solid": "0.4.3", "react": ">=19.2.0", "solid-js": "1.9.12" }, "optionalPeers": ["@opentui/react", "@opentui/solid", "react", "solid-js"] }, "sha512-sinX0pyQBRrEvo89PSSUbSUDIYpL3xWo81VEfec58VFoVRB5FG48/deAtvRTQfJ8w1kgbzN8hzdOXdSm61zBmw=="],

-    "@opentui/solid": ["@opentui/solid@0.0.0-20260717-0afb0c25", "", { "dependencies": { "@babel/core": "7.28.0", "@babel/preset-typescript": "7.27.1", "@opentui/core": "0.0.0-20260717-0afb0c25", "babel-plugin-module-resolver": "5.0.2", "babel-preset-solid": "1.9.12", "entities": "7.0.1", "s-js": "^0.4.9" }, "peerDependencies": { "solid-js": "1.9.12" } }, "sha512-GIAwS1a+ZFMSMR8W5KyvErcVNgddqo5U/KRDoL8/8wUjdKRP/3XyZQj8a23AXTJX3Yv8C5DkTQEKQymkXq2Wlg=="],
+    "@opentui/solid": ["@opentui/solid@0.4.3", "", { "dependencies": { "@babel/core": "7.28.0", "@babel/preset-typescript": "7.27.1", "@opentui/core": "0.4.3", "babel-plugin-module-resolver": "5.0.2", "babel-preset-solid": "1.9.12", "entities": "7.0.1", "s-js": "^0.4.9" }, "peerDependencies": { "solid-js": "1.9.12" } }, "sha512-RcV0+S8HMdXOASyr7HmJUBuTUIaFPzAxMDa44VftS5C2JUgrmAuWo0Njv1q3TWRB1owjHnyKhEfWGKq7A82wxw=="],

    "@orama/orama": ["@orama/orama@3.1.18", "", {}, "sha512-a61ljmRVVyG5MC/698C8/FfFDw5a8LOIvyOLW5fztgUXqUpc1jOfQzOitSCbge657OgXXThmY3Tk8fpiDb4UcA=="],

@@ -5615,8 +5595,6 @@

    "resolve-pkg-maps": ["resolve-pkg-maps@1.0.0", "", {}, "sha512-seS2Tj26TBVOC2NIc2rOe2y2ZO7efxITtLZcGSOnHHNOQ7CkiUBfw0Iw2ck6xkIhPwLhKNLS8BO+hEpngQlqzw=="],

-    "resolve.exports": ["resolve.exports@2.0.3", "", {}, "sha512-OcXjMsGdhL4XnbShKpAcSqPMzQoYkYyhbEaeSko47MjRP9NfEQMhZkXL1DoFlt9LWQn4YttrdnV6X2OiyzBi+A=="],
-
    "responselike": ["responselike@2.0.1", "", { "dependencies": { "lowercase-keys": "^2.0.0" } }, "sha512-4gl03wn3hj1HP3yzgdI7d3lCkF95F21Pz4BPGvKHinyQzALR5CapwC8yIi0Rh58DEMQ/SguC03wFj2k0M/mHhw=="],

    "restore-cursor": ["restore-cursor@4.0.0", "", { "dependencies": { "onetime": "^5.1.0", "signal-exit": "^3.0.2" } }, "sha512-I9fPXU9geO9bHOt9pHHOhOkYerIMsmVaWB0rA2AI9ERh/+x/i7MV5HKBNrg+ljO5eoPVgCcnFuRjJ9uH6I/3eg=="],
@@ -46,9 +46,9 @@
      "@octokit/rest": "22.0.0",
      "@hono/standard-validator": "0.2.0",
      "@hono/zod-validator": "0.4.2",
-      "@opentui/core": "0.0.0-20260717-0afb0c25",
-      "@opentui/keymap": "0.0.0-20260717-0afb0c25",
-      "@opentui/solid": "0.0.0-20260717-0afb0c25",
+      "@opentui/core": "0.4.3",
+      "@opentui/keymap": "0.4.3",
+      "@opentui/solid": "0.4.3",
      "@tanstack/solid-virtual": "3.13.32",
      "@shikijs/stream": "4.2.0",
      "ulid": "3.0.1",
@@ -75,7 +75,6 @@
      "hono": "4.10.7",
      "hono-openapi": "1.1.2",
      "fuzzysort": "3.1.0",
-      "get-east-asian-width": "1.6.0",
      "luxon": "3.6.1",
      "marked": "17.0.6",
      "marked-shiki": "1.2.1",
@@ -86,11 +85,9 @@
      "@typescript/native-preview": "7.0.0-dev.20251207.1",
      "zod": "4.1.8",
      "remeda": "2.26.0",
-      "resolve.exports": "2.0.3",
      "sst": "4.13.1",
      "shiki": "4.2.0",
      "solid-list": "0.3.0",
-      "string-width": "7.2.0",
      "tailwindcss": "4.1.11",
      "vite": "7.1.4",
      "@solidjs/meta": "0.29.4",
@@ -148,9 +145,9 @@
    "electron"
  ],
  "overrides": {
-    "@opentui/core": "0.0.0-20260717-0afb0c25",
-    "@opentui/keymap": "0.0.0-20260717-0afb0c25",
-    "@opentui/solid": "0.0.0-20260717-0afb0c25",
+    "@opentui/core": "catalog:",
+    "@opentui/keymap": "catalog:",
+    "@opentui/solid": "catalog:",
    "@types/bun": "catalog:",
    "@types/node": "catalog:"
  },
@@ -127,23 +127,37 @@ OpenAI Chat and OpenAI Responses are separate semantic entrypoints:
 - `@opencode-ai/ai/providers/openai/responses`
 - `@opencode-ai/ai/providers/openai-compatible/responses`
 - `@opencode-ai/ai/providers/anthropic-compatible`
- `@opencode-ai/ai/providers/google-vertex`
- `@opencode-ai/ai/providers/google-vertex/anthropic`
+- `@opencode-ai/ai/providers/google-vertex/gemini`
+- `@opencode-ai/ai/providers/google-vertex/chat`
+- `@opencode-ai/ai/providers/google-vertex/responses`
+- `@opencode-ai/ai/providers/google-vertex/messages`

 Responses HTTP versus WebSocket is a scoped `transport` setting on the OpenAI Responses entrypoint, not another entrypoint. Azure follows the same Chat/Responses split at `providers/azure/chat` and `providers/azure/responses`. Generic OpenAI-compatible Chat remains at `providers/openai-compatible`; compatible Responses is separate at `providers/openai-compatible/responses`. Generic Anthropic Messages-compatible providers use `providers/anthropic-compatible`, which the named Anthropic provider composes. Google Gemini and Amazon Bedrock expose their single native API through their existing provider paths.

-Vertex Gemini and Vertex Anthropic are separate products with separate entrypoints. Both accept `project`, `location`, and an optional `accessToken`; when no explicit token or auth override is supplied they lazily use Google Application Default Credentials. Vertex Gemini instead selects express mode when `apiKey` or `GOOGLE_VERTEX_API_KEY` is present.
+Vertex Gemini, Vertex Chat, Vertex Responses, and Vertex Messages are separate API entrypoints. All accept `project`, `location`, and an optional `accessToken`; when no explicit token or auth override is supplied they lazily use Google Application Default Credentials. Vertex Gemini instead selects express mode when `apiKey` or `GOOGLE_VERTEX_API_KEY` is present. Vertex Chat targets MaaS models through the OpenAI-compatible Chat Completions endpoint, while Vertex Responses targets Grok models and defaults `store` to `false` as required by Vertex. `providers/google-vertex` remains the default alias for `providers/google-vertex/gemini`.

 Tuned Vertex Gemini deployments use model ids shaped like `endpoints/1234567890` and require OAuth or ADC; Vertex express-mode API keys support publisher models only.

 ```ts
-import { model } from "@opencode-ai/ai/providers/google-vertex"
+import { model } from "@opencode-ai/ai/providers/google-vertex/gemini"

 model("gemini-3.5-flash", { project: "my-project", location: "global" })
 ```

 ```ts
-import { model } from "@opencode-ai/ai/providers/google-vertex/anthropic"
+import { model } from "@opencode-ai/ai/providers/google-vertex/chat"
+
+model("deepseek-ai/deepseek-v3.2-maas", { project: "my-project", location: "global" })
+```
+
+```ts
+import { model } from "@opencode-ai/ai/providers/google-vertex/responses"
+
+model("xai/grok-4.20-reasoning", { project: "my-project", location: "global" })
+```
+
+```ts
+import { model } from "@opencode-ai/ai/providers/google-vertex/messages"

 model("claude-sonnet-4-6", { project: "my-project", location: "global" })
 ```
@@ -1,15 +1,15 @@
 # LLM Provider Parity Status

-Last reviewed: 2026-07-15
+Last reviewed: 2026-07-16

 This file tracks the gap between the native `@opencode-ai/ai` package and the AI SDK provider packages that opencode still depends on for many catalog/runtime paths.

 ## Existing Status Sources

-| File                                 | What it tracks                                                                   | Limitation                                              |
-| ------------------------------------ | -------------------------------------------------------------------------------- | ------------------------------------------------------- |
-| `packages/ai/DESIGN.md`             | Future clean-break API proposal for `@opencode-ai/ai`.                       | Not a provider parity tracker.                          |
-| `packages/ai/example/call-sites.md` | Route/value/provider-facade migration checklist and call-site sketches.          | Architecture migration only; not AI SDK package parity. |
+| File                                | What it tracks                                                          | Limitation                                              |
+| ----------------------------------- | ----------------------------------------------------------------------- | ------------------------------------------------------- |
+| `packages/ai/DESIGN.md`             | Future clean-break API proposal for `@opencode-ai/ai`.                  | Not a provider parity tracker.                          |
+| `packages/ai/example/call-sites.md` | Route/value/provider-facade migration checklist and call-site sketches. | Architecture migration only; not AI SDK package parity. |

 ## Current Implementation Snapshot

@@ -23,8 +23,10 @@ This file tracks the gap between the native `@opencode-ai/ai` package and the AI
 | Anthropic-compatible Messages      | `src/protocols/anthropic-messages.ts`, `src/providers/anthropic-compatible.ts`                 | Usable for deployments that implement the Anthropic Messages wire protocol. Named Anthropic composes this base.                                                          | No named compatible family profiles or recorded deployment coverage yet.                                                                                                                                                                                  |
 | Anthropic Messages                 | `src/protocols/anthropic-messages.ts`, `src/providers/anthropic.ts`                            | Usable. Supports tools, thinking, cache control, images, server-hosted tool events, and usage.                                                                           | Provider option surface is small. Beta/header handling, metadata, and newer Messages fields need a typed parity pass.                                                                                                                                     |
 | Gemini Developer API               | `src/protocols/gemini.ts`, `src/providers/google.ts`                                           | Usable for Google API key flow. Supports text, images, tools, thinking signatures, and cache usage.                                                                      | This is not Vertex. Typed provider options are narrow; many Gemini request fields currently require raw `http.body` overlays.                                                                                                                             |
-| Vertex Gemini                      | `src/protocols/google-vertex-gemini.ts`, `src/providers/google-vertex.ts`                      | Usable through API-key express mode, explicit OAuth tokens, or ADC with project/location endpoint derivation, including tuned `endpoints/...` deployments.               | Core runner/catalog mapping and recorded provider coverage are missing.                                                                                                                                                                                   |
-| Vertex Anthropic Messages          | `src/protocols/google-vertex-anthropic.ts`, `src/providers/google-vertex-anthropic.ts`         | Usable through explicit OAuth tokens or ADC, including global, regional, and `eu`/`us` multi-region endpoints.                                                           | Core runner/catalog mapping and recorded provider coverage are missing; Vertex-specific hosted-tool parity needs review.                                                                                                                                  |
+| Vertex Gemini                      | `src/protocols/gemini.ts`, `src/providers/google-vertex.ts`                                    | Usable through API-key express mode, explicit OAuth tokens, or ADC with project/location endpoint derivation, including tuned `endpoints/...` deployments.               | Core runner/catalog mapping and recorded provider coverage are missing.                                                                                                                                                                                   |
+| Vertex Chat                        | `src/protocols/openai-chat.ts`, `src/providers/google-vertex-chat.ts`                          | Usable for MaaS models through OpenAI-compatible Chat Completions with explicit OAuth tokens or ADC and project/location endpoint derivation.                            | Core runner/catalog mapping and recorded provider coverage are missing; MaaS family-specific request parity needs review.                                                                                                                                 |
+| Vertex Responses                   | `src/protocols/openai-responses.ts`, `src/providers/google-vertex-responses.ts`                | Usable for Grok models through OpenAI-compatible Responses with explicit OAuth tokens or ADC, project/location endpoint derivation, and storage disabled by default.     | Core runner/catalog mapping and recorded provider coverage are missing; stateful continuation is not supported by Vertex.                                                                                                                                 |
+| Vertex Messages                    | `src/protocols/anthropic-messages.ts`, `src/providers/google-vertex-messages.ts`               | Usable through explicit OAuth tokens or ADC, including global, regional, and `eu`/`us` multi-region endpoints.                                                           | Core runner/catalog mapping and recorded provider coverage are missing; Vertex-specific hosted-tool parity needs review.                                                                                                                                  |
 | Bedrock Converse                   | `src/protocols/bedrock-converse.ts`, `src/providers/amazon-bedrock.ts`                         | Partial but real. Supports AWS event-stream framing, SigV4 with supplied credentials, bearer auth, tools, reasoning signatures, media, cache points, and recorded tests. | Native facade does not mirror the AI SDK plugin's default AWS credential chain/profile behavior. Runner/catalog mapping is missing. Guardrails, inference profiles, region-specific model ID fixes, and model-specific request fields need a parity pass. |
 | Azure OpenAI                       | `src/providers/azure.ts` using OpenAI Chat/Responses protocols                                 | Partial. Supports resource/base URL setup, API key auth, API version query, Chat, and Responses selectors.                                                               | Core runner does not map `@ai-sdk/azure` to this native facade. AAD/token auth and Azure-specific endpoint variants need review.                                                                                                                          |
 | Cloudflare AI Gateway / Workers AI | `src/providers/cloudflare.ts`                                                                  | Present via OpenAI-compatible Chat routes.                                                                                                                               | Useful but not part of the critical AI SDK replacement set yet. Needs per-product recorded coverage before relying on it broadly.                                                                                                                         |
@@ -54,8 +56,8 @@ Other `aisdk:` packages, including Google Vertex, Azure, and Bedrock, currently
 | `@ai-sdk/google`                  | Gemini Developer API                                           | Partial / usable | Add typed options for safety, response schema/modalities, cached content, grounding/search/code execution, and non-text output modes where supported.                                                               |
 | `@ai-sdk/google-vertex`           | Vertex Gemini namespace/facade                                 | Partial / usable | Add runner/catalog mapping, recorded coverage, and broader provider-option parity.                                                                                                                                  |
 | `@ai-sdk/google-vertex/anthropic` | Anthropic Messages over Vertex namespace/facade                | Partial / usable | Add runner/catalog mapping, recorded coverage, and Vertex-specific hosted-tool parity.                                                                                                                              |
-| `@ai-sdk/google-vertex/maas`      | Vertex MaaS OpenAI-compatible namespace/facade                 | Missing          | Decide native Chat/Responses selection, endpoint derivation, auth, and catalog mapping.                                                                                                                             |
-| `@ai-sdk/google-vertex/xai`       | Vertex xAI OpenAI-compatible namespace/facade                  | Missing          | Decide whether this composes the generic compatible bases or the xAI facade, then add endpoint/auth mapping and tests.                                                                                              |
+| `@ai-sdk/google-vertex/maas`      | Vertex Chat                                                    | Partial / usable | Add runner/catalog mapping, recorded coverage, and MaaS family-specific request parity.                                                                                                                             |
+| `@ai-sdk/google-vertex/xai`       | Vertex Chat / Responses                                        | Partial / usable | Decide Chat/Responses selection for catalog models, add runner mapping and recorded coverage, and review xAI-specific request options.                                                                              |
 | `@ai-sdk/azure`                   | Azure OpenAI Chat/Responses facade                             | Partial          | Map runner/catalog metadata to native Azure, handle resourceName/baseURL/apiVersion variants, add AAD/token auth story, and verify Chat vs Responses deployment selection.                                          |
 | `@ai-sdk/amazon-bedrock`          | Bedrock Converse                                               | Partial          | Add default AWS credential chain/profile support, region/inference-profile model ID handling, provider option parity via `additionalModelRequestFields`, guardrails/performance config, and runner/catalog mapping. |
 | `@ai-sdk/amazon-bedrock/mantle`   | Bedrock Mantle OpenAI-compatible Chat/Responses namespace      | Missing          | Decide native Mantle shape, likely separate from Converse because it uses OpenAI-compatible Chat/Responses semantics over Bedrock. Add package mapping and tests.                                                   |
@@ -65,19 +67,19 @@ Other `aisdk:` packages, including Google Vertex, Azure, and Bedrock, currently
 1. Runner support is narrower than the LLM package. The package has native provider facades for Google, Azure, and Bedrock, but the V2 Session runner only maps OpenAI, Anthropic, and explicit OpenAI-compatible Chat from `aisdk` catalog metadata.
 2. OpenAI-compatible Responses is available as a separate package entrypoint, but the V2 runner still maps `@ai-sdk/openai-compatible` to Chat only. Catalog selection must become API-aware before Responses deployments can use it.
 3. Bedrock native auth is not AI SDK parity. The AI SDK plugin uses the default AWS provider chain, profile, container credentials, and Bedrock bearer token env behavior. Native Bedrock currently expects explicit credentials or bearer auth on the facade.
-4. Vertex Gemini and Vertex Anthropic now have native package entrypoints, but the core runner does not map catalog metadata to them yet and recorded provider coverage is still missing.
+4. Vertex Gemini, Vertex Chat, Vertex Responses, and Vertex Messages now have native package entrypoints, but the core runner does not map catalog metadata to them yet and recorded provider coverage is still missing.
 5. Azure is only a provider facade, not a full runtime replacement. Native Azure exists, but the catalog runner does not select it, and token auth/resource variants need review.
 6. Provider option typing is uneven. OpenAI, Anthropic, Gemini, Bedrock, and OpenRouter each expose a small typed subset plus raw HTTP overlays; this is useful but not equivalent to AI SDK provider option coverage.
 7. Structured output is not provider-native yet. `LLM.generateObject` still uses a synthetic tool strategy, while the future design expects native structured output where reliable and tool fallback where needed.
-8. Package/namespace boundaries for the current native loading set are explicit in docs and exports. Other exported provider facades are not catalog package entrypoints until they implement the contract. Missing native boundaries remain for Vertex MaaS, Vertex xAI, and Bedrock Mantle.
+8. Package/namespace boundaries for the current native loading set are explicit in docs and exports. Other exported provider facades are not catalog package entrypoints until they implement the contract. Vertex xAI still needs catalog API selection; the missing native boundary is Bedrock Mantle.
 9. Recorded coverage is uneven. OpenAI, Anthropic, Gemini, Bedrock Converse, Cloudflare, OpenRouter, and several OpenAI-compatible Chat providers have cassettes. Azure, Vertex, and Mantle need first-class recorded scenarios before switching defaults.

 ## Native Namespace Shape

 These are implementation/API slices, not separate npm packages.

-| API slice                     | Package-like entrypoint                                  | Purpose                                                                      |
-| ----------------------------- | -------------------------------------------------------- | ---------------------------------------------------------------------------- |
+| API slice                     | Package-like entrypoint                                 | Purpose                                                                      |
+| ----------------------------- | ------------------------------------------------------- | ---------------------------------------------------------------------------- |
 | OpenAI Chat                   | `@opencode-ai/ai/providers/openai/chat`                 | OpenAI `/chat/completions` semantics.                                        |
 | OpenAI Responses              | `@opencode-ai/ai/providers/openai/responses`            | OpenAI `/responses` semantics with HTTP/WebSocket selected through settings. |
 | OpenAI-compatible Chat        | `@opencode-ai/ai/providers/openai-compatible`           | Generic OpenAI-compatible `/chat/completions`.                               |
@@ -85,12 +87,12 @@ These are implementation/API slices, not separate npm packages.
 | Anthropic-compatible Messages | `@opencode-ai/ai/providers/anthropic-compatible`        | Generic Anthropic-compatible `/messages`.                                    |
 | Anthropic Messages            | `@opencode-ai/ai/providers/anthropic`                   | Anthropic Messages API.                                                      |
 | Gemini Developer API          | `@opencode-ai/ai/providers/google`                      | Google AI Studio Gemini API.                                                 |
-| Vertex Gemini                 | `@opencode-ai/ai/providers/google-vertex`               | Vertex Gemini API.                                                           |
-| Vertex Anthropic Messages     | `@opencode-ai/ai/providers/google-vertex/anthropic`     | Vertex-hosted Anthropic Messages API.                                        |
-| Vertex MaaS                   | Missing                                                  | Vertex OpenAI-compatible MaaS APIs.                                          |
-| Vertex xAI                    | Missing                                                  | Vertex-hosted xAI APIs.                                                      |
+| Vertex Gemini                 | `@opencode-ai/ai/providers/google-vertex/gemini`        | Vertex Gemini API; `providers/google-vertex` is the default alias.           |
+| Vertex Chat                   | `@opencode-ai/ai/providers/google-vertex/chat`          | Vertex OpenAI-compatible Chat Completions for MaaS models.                   |
+| Vertex Responses              | `@opencode-ai/ai/providers/google-vertex/responses`     | Vertex OpenAI-compatible Responses for Grok models.                          |
+| Vertex Messages               | `@opencode-ai/ai/providers/google-vertex/messages`      | Vertex-hosted Anthropic Messages API.                                        |
 | Bedrock Converse              | `@opencode-ai/ai/providers/amazon-bedrock`              | AWS Bedrock Converse API.                                                    |
-| Bedrock Mantle                | Missing                                                  | AWS Bedrock Mantle OpenAI-compatible APIs.                                   |
+| Bedrock Mantle                | Missing                                                 | AWS Bedrock Mantle OpenAI-compatible APIs.                                   |
 | Azure OpenAI Chat             | `@opencode-ai/ai/providers/azure/chat`                  | Azure specialization of OpenAI Chat.                                         |
 | Azure OpenAI Responses        | `@opencode-ai/ai/providers/azure/responses`             | Azure specialization of OpenAI Responses.                                    |

@@ -99,8 +101,8 @@ These are implementation/API slices, not separate npm packages.
 1. Add native runner/catalog mappings for `@ai-sdk/azure`, `@ai-sdk/google`, and `@ai-sdk/amazon-bedrock` where the existing native facades are already close.
 2. Add API-aware runner/catalog selection between OpenAI-compatible Chat and Responses.
 3. Bring Bedrock native auth/config to AI SDK parity: region, profile, default AWS credential chain, bearer token env, endpoint override, and cross-region inference profile handling.
-4. Add runner/catalog mappings and recorded scenarios for the native Vertex Gemini and Vertex Anthropic entrypoints.
-5. Add native Vertex MaaS and Vertex xAI entrypoints by composing the compatible bases and shared Vertex auth/endpoint setup.
+4. Add runner/catalog mappings and recorded scenarios for the native Vertex Gemini, Chat, Responses, and Messages entrypoints.
+5. Decide Chat/Responses selection for `@ai-sdk/google-vertex/xai` catalog models.
 6. Add Bedrock Mantle as a separate OpenAI-compatible Bedrock namespace after deciding whether it uses Chat, Responses, or both by model.
 7. Expand typed provider options from the existing V1 lowerer knowledge in `packages/core/src/v1/config/provider-options.ts` before adding more raw overlay examples.
-8. Add recorded provider tests for Azure, Vertex Gemini, Vertex Anthropic, Bedrock credential-chain behavior, and Mantle before making native runtime the default for those packages.
+8. Add recorded provider tests for Azure, Vertex Gemini, Vertex Chat, Vertex Responses, Vertex Messages, Bedrock credential-chain behavior, and Mantle before making native runtime the default for those packages.
@@ -360,17 +360,29 @@ import { model } from "@opencode-ai/ai/providers/openai/responses"
 model("gpt-4o", { apiKey, transport: "websocket" })
 ```

-Vertex keeps Gemini and Anthropic Messages as separate package-like entrypoints,
+Vertex keeps Gemini, Chat, Responses, and Messages as separate package-like entrypoints,
 while sharing project/location resolution and ADC authentication internally:

 ```ts
-import { model } from "@opencode-ai/ai/providers/google-vertex"
+import { model } from "@opencode-ai/ai/providers/google-vertex/gemini"

 model("gemini-3.5-flash", { project, location: "global" })
 ```

 ```ts
-import { model } from "@opencode-ai/ai/providers/google-vertex/anthropic"
+import { model } from "@opencode-ai/ai/providers/google-vertex/chat"
+
+model("deepseek-ai/deepseek-v3.2-maas", { project, location: "global" })
+```
+
+```ts
+import { model } from "@opencode-ai/ai/providers/google-vertex/responses"
+
+model("xai/grok-4.20-reasoning", { project, location: "global" })
+```
+
+```ts
+import { model } from "@opencode-ai/ai/providers/google-vertex/messages"

 model("claude-sonnet-4-6", { project, location: "global" })
 ```
@@ -1,42 +0,0 @@
-import { Effect, Schema, Struct } from "effect"
-import { AnthropicMessages } from "./anthropic-messages"
-import { Auth } from "../route/auth"
-import { Route } from "../route/client"
-import { Endpoint } from "../route/endpoint"
-import { Framing } from "../route/framing"
-import { Protocol } from "../route/protocol"
-
-const VERSION = "vertex-2023-10-16" as const
-
-export const GoogleVertexAnthropicBody = Schema.Struct({
-  ...Struct.omit(AnthropicMessages.AnthropicMessagesBody.fields, ["model"]),
-  anthropic_version: Schema.Literal(VERSION),
-})
-export type GoogleVertexAnthropicBody = Schema.Schema.Type<typeof GoogleVertexAnthropicBody>
-
-export const protocol = Protocol.make({
-  id: "google-vertex-anthropic",
-  body: {
-    schema: GoogleVertexAnthropicBody,
-    from: (request) =>
-      AnthropicMessages.protocol.body.from(request).pipe(
-        Effect.map((body) => ({
-          ...Struct.omit(body, ["model"]),
-          anthropic_version: VERSION,
-        })),
-      ),
-  },
-  stream: AnthropicMessages.protocol.stream,
-})
-
-export const route = Route.make({
-  id: "google-vertex-anthropic",
-  provider: "google-vertex-anthropic",
-  providerMetadataKey: "anthropic",
-  protocol,
-  endpoint: Endpoint.path(({ request }) => `/${request.model.id}:streamRawPredict`),
-  auth: Auth.none,
-  framing: Framing.sse,
-})
-
-export * as GoogleVertexAnthropic from "./google-vertex-anthropic"
@@ -1,20 +0,0 @@
-import { Gemini } from "./gemini"
-import { Auth } from "../route/auth"
-import { Route } from "../route/client"
-import { Endpoint } from "../route/endpoint"
-import { Framing } from "../route/framing"
-
-export const route = Route.make({
-  id: "google-vertex-gemini",
-  provider: "google-vertex",
-  providerMetadataKey: "google",
-  protocol: Gemini.protocol,
-  endpoint: Endpoint.path(({ request }) => {
-    const model = String(request.model.id)
-    return `/${model.startsWith("endpoints/") ? model : `models/${model}`}:streamGenerateContent?alt=sse`
-  }),
-  auth: Auth.none,
-  framing: Framing.sse,
-})
-
-export * as GoogleVertexGemini from "./google-vertex-gemini"
@@ -1,6 +1,4 @@
 export * as AnthropicMessages from "./anthropic-messages"
-export * as GoogleVertexAnthropic from "./google-vertex-anthropic"
-export * as GoogleVertexGemini from "./google-vertex-gemini"
 export * as BedrockConverse from "./bedrock-converse"
 export * as Gemini from "./gemini"
 export * as OpenAIChat from "./openai-chat"
@@ -0,0 +1,81 @@
+import type { ProviderPackage } from "../provider-package"
+import { OpenAICompatibleChat } from "../protocols/openai-compatible-chat"
+import type { RouteDefaultsInput } from "../route/client"
+import { ProviderID, type ModelID, type ProviderOptions } from "../schema"
+import { GoogleVertexShared } from "./google-vertex-shared"
+
+export const id = ProviderID.make("google-vertex")
+
+export type Config = RouteDefaultsInput &
+  GoogleVertexShared.OAuthOptions & {
+    readonly baseURL?: string
+    readonly location?: string
+    readonly project?: string
+  }
+
+export interface Settings extends ProviderPackage.Settings {
+  readonly accessToken?: string
+  readonly apiKey?: never
+  readonly baseURL?: string
+  readonly location?: string
+  readonly project?: string
+  readonly providerOptions?: ProviderOptions
+}
+
+const route = OpenAICompatibleChat.route.with({
+  id: "google-vertex-chat",
+  provider: id,
+})
+
+export const routes = [route]
+
+const configuredRoute = (input: Config) => {
+  if ("apiKey" in input && input.apiKey !== undefined) throw new Error("Google Vertex Chat does not support API keys")
+  const {
+    accessToken: _accessToken,
+    auth: _auth,
+    baseURL,
+    location: inputLocation,
+    project: inputProject,
+    ...rest
+  } = input
+  const location = GoogleVertexShared.location(inputLocation, "global")
+  const project = GoogleVertexShared.project(inputProject)
+  return route.with({
+    ...rest,
+    endpoint: {
+      baseURL:
+        baseURL ??
+        `https://aiplatform.googleapis.com/v1/projects/${GoogleVertexShared.requireProject(project)}/locations/${location}/endpoints/openapi`,
+    },
+    auth: GoogleVertexShared.oauth(input, project),
+  })
+}
+
+export const configure = (input: Config = {}) => {
+  const route = configuredRoute(input)
+  return {
+    id,
+    model: (modelID: string | ModelID) => route.model({ id: modelID }),
+    configure,
+  }
+}
+
+export const provider = {
+  id,
+  configure,
+}
+
+export const model: ProviderPackage.Definition<Settings>["model"] = (modelID, settings) => {
+  if (settings.apiKey !== undefined) throw new Error("Google Vertex Chat does not support API keys")
+  return configure({
+    accessToken: settings.accessToken,
+    baseURL: settings.baseURL,
+    headers: settings.headers === undefined ? undefined : { ...settings.headers },
+    http: settings.body === undefined ? undefined : { body: { ...settings.body } },
+    limits: settings.limits,
+    location: settings.location,
+    project: settings.project,
+    providerOptions: settings.providerOptions,
+  }).model(modelID)
+}
@@ -0,0 +1,111 @@
+import { Effect, Schema, Struct } from "effect"
+import type { ProviderPackage } from "../provider-package"
+import { AnthropicMessages } from "../protocols/anthropic-messages"
+import { Auth } from "../route/auth"
+import { Route, type RouteDefaultsInput } from "../route/client"
+import { Endpoint } from "../route/endpoint"
+import { Framing } from "../route/framing"
+import { Protocol } from "../route/protocol"
+import { ProviderID, type ModelID, type ProviderOptions } from "../schema"
+import { GoogleVertexShared } from "./google-vertex-shared"
+
+const VERSION = "vertex-2023-10-16" as const
+
+// 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 & {
+    readonly baseURL?: string
+    readonly location?: string
+    readonly project?: string
+  }
+
+export interface Settings extends ProviderPackage.Settings {
+  readonly accessToken?: string
+  readonly apiKey?: never
+  readonly baseURL?: string
+  readonly location?: string
+  readonly project?: string
+  readonly providerOptions?: ProviderOptions
+}
+
+const route = Route.make({
+  id: "google-vertex-messages",
+  provider: id,
+  providerMetadataKey: "anthropic",
+  protocol: Protocol.make({
+    id: AnthropicMessages.protocol.id,
+    body: {
+      schema: Schema.Struct({
+        ...Struct.omit(AnthropicMessages.AnthropicMessagesBody.fields, ["model"]),
+        anthropic_version: Schema.Literal(VERSION),
+      }),
+      from: (request) =>
+        AnthropicMessages.protocol.body.from(request).pipe(
+          Effect.map((body) => ({
+            ...Struct.omit(body, ["model"]),
+            anthropic_version: VERSION,
+          })),
+        ),
+    },
+    stream: AnthropicMessages.protocol.stream,
+  }),
+  endpoint: Endpoint.path(({ request }) => `/${request.model.id}:streamRawPredict`),
+  auth: Auth.none,
+  framing: Framing.sse,
+})
+
+export const routes = [route]
+
+const configuredRoute = (input: Config) => {
+  if ("apiKey" in input && input.apiKey !== undefined)
+    throw new Error("Google Vertex Messages does not support API keys")
+  const {
+    accessToken: _accessToken,
+    auth: _auth,
+    baseURL,
+    location: inputLocation,
+    project: inputProject,
+    ...rest
+  } = input
+  const location = GoogleVertexShared.location(inputLocation, "global")
+  const project = GoogleVertexShared.project(inputProject)
+  return route.with({
+    ...rest,
+    endpoint: {
+      baseURL:
+        baseURL ??
+        `https://${GoogleVertexShared.host(location)}/v1/projects/${GoogleVertexShared.requireProject(project)}/locations/${location}/publishers/anthropic/models`,
+    },
+    auth: GoogleVertexShared.oauth(input, project),
+  })
+}
+
+export const configure = (input: Config = {}) => {
+  const route = configuredRoute(input)
+  return {
+    id,
+    model: (modelID: string | ModelID) => route.model({ id: modelID }),
+    configure,
+  }
+}
+
+export const provider = {
+  id,
+  configure,
+}
+
+export const model: ProviderPackage.Definition<Settings>["model"] = (modelID, settings) => {
+  if (settings.apiKey !== undefined) throw new Error("Google Vertex Messages does not support API keys")
+  return configure({
+    accessToken: settings.accessToken,
+    baseURL: settings.baseURL,
+    headers: settings.headers === undefined ? undefined : { ...settings.headers },
+    http: settings.body === undefined ? undefined : { body: { ...settings.body } },
+    limits: settings.limits,
+    location: settings.location,
+    project: settings.project,
+    providerOptions: settings.providerOptions,
+  }).model(modelID)
+}
@@ -1,10 +1,10 @@
 import type { ProviderPackage } from "../provider-package"
-import { GoogleVertexAnthropic } from "../protocols/google-vertex-anthropic"
+import { OpenAICompatibleResponses } from "../protocols/openai-compatible-responses"
 import type { RouteDefaultsInput } from "../route/client"
 import { ProviderID, type ModelID, type ProviderOptions } from "../schema"
 import { GoogleVertexShared } from "./google-vertex-shared"

-export const id = ProviderID.make("google-vertex-anthropic")
+export const id = ProviderID.make("google-vertex")

 export type Config = RouteDefaultsInput &
  GoogleVertexShared.OAuthOptions & {
@@ -22,11 +22,16 @@ export interface Settings extends ProviderPackage.Settings {
  readonly providerOptions?: ProviderOptions
 }

-export const routes = [GoogleVertexAnthropic.route]
+const route = OpenAICompatibleResponses.route.with({
+  id: "google-vertex-responses",
+  provider: id,
+})
+
+export const routes = [route]

 const configuredRoute = (input: Config) => {
  if ("apiKey" in input && input.apiKey !== undefined)
-    throw new Error("Google Vertex Anthropic does not support API keys")
+    throw new Error("Google Vertex Responses does not support API keys")
  const {
    accessToken: _accessToken,
    auth: _auth,
@@ -37,12 +42,12 @@ const configuredRoute = (input: Config) => {
  } = input
  const location = GoogleVertexShared.location(inputLocation, "global")
  const project = GoogleVertexShared.project(inputProject)
-  return GoogleVertexAnthropic.route.with({
+  return route.with({
    ...rest,
    endpoint: {
      baseURL:
        baseURL ??
-        `https://${GoogleVertexShared.host(location)}/v1/projects/${GoogleVertexShared.requireProject(project)}/locations/${location}/publishers/anthropic/models`,
+        `https://aiplatform.googleapis.com/v1/projects/${GoogleVertexShared.requireProject(project)}/locations/${location}/endpoints/openapi`,
    },
    auth: GoogleVertexShared.oauth(input, project),
  })
@@ -63,7 +68,7 @@ export const provider = {
 }

 export const model: ProviderPackage.Definition<Settings>["model"] = (modelID, settings) => {
-  if (settings.apiKey !== undefined) throw new Error("Google Vertex Anthropic does not support API keys")
+  if (settings.apiKey !== undefined) throw new Error("Google Vertex Responses does not support API keys")
  return configure({
    accessToken: settings.accessToken,
    baseURL: settings.baseURL,
@@ -1,7 +1,9 @@
 import type { ProviderPackage } from "../provider-package"
-import { GoogleVertexGemini } from "../protocols/google-vertex-gemini"
+import { Gemini } from "../protocols/gemini"
 import { Auth } from "../route/auth"
-import type { RouteDefaultsInput } from "../route/client"
+import { Route, type RouteDefaultsInput } from "../route/client"
+import { Endpoint } from "../route/endpoint"
+import { Framing } from "../route/framing"
 import { ProviderID, type ModelID, type ProviderOptions } from "../schema"
 import { GoogleVertexShared } from "./google-vertex-shared"

@@ -25,7 +27,20 @@ export type Settings = ProviderPackage.Settings &
    readonly providerOptions?: ProviderOptions
  }

-export const routes = [GoogleVertexGemini.route]
+const route = Route.make({
+  id: "google-vertex-gemini",
+  provider: id,
+  providerMetadataKey: "google",
+  protocol: Gemini.protocol,
+  endpoint: Endpoint.path(({ request }) => {
+    const model = String(request.model.id)
+    return `/${model.startsWith("endpoints/") ? model : `models/${model}`}:streamGenerateContent?alt=sse`
+  }),
+  auth: Auth.none,
+  framing: Framing.sse,
+})
+
+export const routes = [route]

 const configuredRoute = (input: Config, modelID: string | ModelID) => {
  const {
@@ -48,7 +63,7 @@ const configuredRoute = (input: Config, modelID: string | ModelID) => {
    (apiKey
      ? "https://aiplatform.googleapis.com/v1/publishers/google"
      : `https://${GoogleVertexShared.host(location)}/v1beta1/projects/${GoogleVertexShared.requireProject(project)}/locations/${location}${endpointModel ? "" : "/publishers/google"}`)
-  return GoogleVertexGemini.route.with({
+  return route.with({
    ...rest,
    endpoint: { baseURL: endpoint },
    auth: apiKey === undefined ? GoogleVertexShared.oauth(input, project) : Auth.header("x-goog-api-key", apiKey),
@@ -1,2 +0,0 @@
-export { model } from "../google-vertex-anthropic"
-export type { Settings } from "../google-vertex-anthropic"
@@ -0,0 +1,2 @@
+export { model } from "../google-vertex-chat"
+export type { Settings } from "../google-vertex-chat"
@@ -0,0 +1,2 @@
+export { model } from "../google-vertex"
+export type { Settings } from "../google-vertex"
@@ -0,0 +1,2 @@
+export { model } from "../google-vertex-messages"
+export type { Settings } from "../google-vertex-messages"
@@ -0,0 +1,2 @@
+export { model } from "../google-vertex-responses"
+export type { Settings } from "../google-vertex-responses"
@@ -7,7 +7,9 @@ export { CloudflareAIGateway, CloudflareWorkersAI } from "./cloudflare"
 export * as GitHubCopilot from "./github-copilot"
 export * as Google from "./google"
 export * as GoogleVertex from "./google-vertex"
-export * as GoogleVertexAnthropic from "./google-vertex-anthropic"
+export * as GoogleVertexChat from "./google-vertex-chat"
+export * as GoogleVertexMessages from "./google-vertex-messages"
+export * as GoogleVertexResponses from "./google-vertex-responses"
 export * as OpenAI from "./openai"
 export * as OpenAICompatible from "./openai-compatible"
 export * as OpenAICompatibleResponses from "./openai-compatible-responses"
@@ -11,7 +11,9 @@ 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 GoogleVertexAnthropic from "../src/providers/google-vertex-anthropic"
+import * as GoogleVertexChat from "../src/providers/google-vertex-chat"
+import * as GoogleVertexMessages from "../src/providers/google-vertex-messages"
+import * as GoogleVertexResponses from "../src/providers/google-vertex-responses"
 import * as OpenAI from "../src/providers/openai"
 import * as OpenAICompatible from "../src/providers/openai-compatible"
 import * as OpenRouter from "../src/providers/openrouter"
@@ -171,20 +173,56 @@ GoogleVertex.configure({ accessToken: "vertex-token", apiKey: "vertex-key", proj
 // @ts-expect-error Vertex Gemini package settings accept only one auth source.
 GoogleVertex.model("gemini-3.5-flash", { accessToken: "vertex-token", apiKey: "vertex-key", project: "project" })

-GoogleVertexAnthropic.configure({ accessToken: "vertex-token", project: "project" }).model("claude-sonnet-4-6")
-// @ts-expect-error Vertex Anthropic package settings do not accept API keys.
-GoogleVertexAnthropic.model("claude-sonnet-4-6", { apiKey: "vertex-key", project: "project" })
-GoogleVertexAnthropic.configure({ auth: RuntimeAuth.bearer("vertex-token"), project: "project" }).model(
-  "claude-sonnet-4-6",
+GoogleVertexChat.configure({ accessToken: "vertex-token", project: "project" }).model("deepseek-ai/deepseek-v3.2-maas")
+GoogleVertexChat.configure({ auth: RuntimeAuth.bearer("vertex-token"), project: "project" }).model(
+  "deepseek-ai/deepseek-v3.2-maas",
 )
-GoogleVertexAnthropic.configure({ accessToken: "vertex-token", project: "project" }).model(
-  "claude-sonnet-4-6",
-  // @ts-expect-error Vertex Anthropic model selectors only accept model ids.
+// @ts-expect-error Vertex Chat package settings do not accept API keys.
+GoogleVertexChat.model("deepseek-ai/deepseek-v3.2-maas", { apiKey: "vertex-key", project: "project" })
+GoogleVertexChat.configure({ accessToken: "vertex-token", project: "project" }).model(
+  "deepseek-ai/deepseek-v3.2-maas",
+  // @ts-expect-error Vertex Chat model selectors only accept model ids.
  {},
 )
-GoogleVertexAnthropic.configure({
+GoogleVertexChat.configure({
  accessToken: "vertex-token",
-  // @ts-expect-error Vertex Anthropic config accepts only one auth source.
+  // @ts-expect-error Vertex Chat config accepts only one auth source.
+  auth: RuntimeAuth.bearer("vertex-token"),
+  project: "project",
+})
+
+GoogleVertexResponses.configure({ accessToken: "vertex-token", project: "project" }).model("xai/grok-4.20-reasoning")
+GoogleVertexResponses.configure({ auth: RuntimeAuth.bearer("vertex-token"), project: "project" }).model(
+  "xai/grok-4.20-reasoning",
+)
+// @ts-expect-error Vertex Responses package settings do not accept API keys.
+GoogleVertexResponses.model("xai/grok-4.20-reasoning", { apiKey: "vertex-key", project: "project" })
+GoogleVertexResponses.configure({ accessToken: "vertex-token", project: "project" }).model(
+  "xai/grok-4.20-reasoning",
+  // @ts-expect-error Vertex Responses model selectors only accept model ids.
+  {},
+)
+GoogleVertexResponses.configure({
+  accessToken: "vertex-token",
+  // @ts-expect-error Vertex Responses config accepts only one auth source.
+  auth: RuntimeAuth.bearer("vertex-token"),
+  project: "project",
+})
+
+GoogleVertexMessages.configure({ accessToken: "vertex-token", project: "project" }).model("claude-sonnet-4-6")
+// @ts-expect-error Vertex Messages package settings do not accept API keys.
+GoogleVertexMessages.model("claude-sonnet-4-6", { apiKey: "vertex-key", project: "project" })
+GoogleVertexMessages.configure({ auth: RuntimeAuth.bearer("vertex-token"), project: "project" }).model(
+  "claude-sonnet-4-6",
+)
+GoogleVertexMessages.configure({ accessToken: "vertex-token", project: "project" }).model(
+  "claude-sonnet-4-6",
+  // @ts-expect-error Vertex Messages model selectors only accept model ids.
+  {},
+)
+GoogleVertexMessages.configure({
+  accessToken: "vertex-token",
+  // @ts-expect-error Vertex Messages config accepts only one auth source.
  auth: RuntimeAuth.bearer("vertex-token"),
  project: "project",
 })
@@ -17,12 +17,16 @@ describe("provider package entrypoints", () => {
      import("@opencode-ai/ai/providers/azure/chat"),
      import("@opencode-ai/ai/providers/google"),
      import("@opencode-ai/ai/providers/google-vertex"),
-      import("@opencode-ai/ai/providers/google-vertex/anthropic"),
+      import("@opencode-ai/ai/providers/google-vertex/gemini"),
+      import("@opencode-ai/ai/providers/google-vertex/chat"),
+      import("@opencode-ai/ai/providers/google-vertex/responses"),
+      import("@opencode-ai/ai/providers/google-vertex/messages"),
    ])

    for (const module of modules) expect(module.model).toBeFunction()
    expect(modules[0].model).toBe(modules[1].model)
    expect(modules[8].model).toBe(modules[9].model)
+    expect(modules[12].model).toBe(modules[13].model)
  })

  test("maps package settings onto the executable model", () => {
@@ -179,20 +183,35 @@ describe("provider package entrypoints", () => {

  test("selects Vertex entrypoints with the same model contract", async () => {
    const GoogleVertex = await import("@opencode-ai/ai/providers/google-vertex")
-    const GoogleVertexAnthropic = await import("@opencode-ai/ai/providers/google-vertex/anthropic")
+    const GoogleVertexGemini = await import("@opencode-ai/ai/providers/google-vertex/gemini")
+    const GoogleVertexChat = await import("@opencode-ai/ai/providers/google-vertex/chat")
+    const GoogleVertexResponses = await import("@opencode-ai/ai/providers/google-vertex/responses")
+    const GoogleVertexMessages = await import("@opencode-ai/ai/providers/google-vertex/messages")
    const gemini = GoogleVertex.model("gemini-3.5-flash", {
      apiKey: "fixture",
      headers: { "x-application": "opencode" },
      body: { safetySettings: [] },
      limits: { context: 1_000_000, output: 65_536 },
    })
-    const anthropic = GoogleVertexAnthropic.model("claude-sonnet-4-6", {
+    const messages = GoogleVertexMessages.model("claude-sonnet-4-6", {
+      accessToken: "fixture",
+      location: "global",
+      project: "vertex-project",
+    })
+    const chat = GoogleVertexChat.model("deepseek-ai/deepseek-v3.2-maas", {
+      accessToken: "fixture",
+      location: "global",
+      project: "vertex-project",
+    })
+    const responses = GoogleVertexResponses.model("xai/grok-4.20-reasoning", {
      accessToken: "fixture",
      location: "global",
      project: "vertex-project",
    })

+    expect(GoogleVertexGemini.model).toBe(GoogleVertex.model)
    expect(gemini.route.id).toBe("google-vertex-gemini")
+    expect(gemini.route.protocol).toBe("gemini")
    expect(gemini.route.endpoint.baseURL).toBe("https://aiplatform.googleapis.com/v1/publishers/google")
    expect(gemini.route.defaults.headers).toEqual({ "x-application": "opencode" })
    expect(gemini.route.defaults.http?.body).toEqual({ safetySettings: [] })
@@ -204,15 +223,31 @@ describe("provider package entrypoints", () => {
        project: "vertex-project",
      }).route.endpoint.baseURL,
    ).toBe("https://aiplatform.eu.rep.googleapis.com/v1beta1/projects/vertex-project/locations/eu/publishers/google")
-    expect(anthropic.route.id).toBe("google-vertex-anthropic")
-    expect(anthropic.route.endpoint.baseURL).toBe(
+    expect(messages.route.id).toBe("google-vertex-messages")
+    expect(messages.route.protocol).toBe("anthropic-messages")
+    expect(messages.route.endpoint.baseURL).toBe(
      "https://aiplatform.googleapis.com/v1/projects/vertex-project/locations/global/publishers/anthropic/models",
    )
+    expect(chat.route.id).toBe("google-vertex-chat")
+    expect(chat.route.protocol).toBe("openai-chat")
+    expect(chat.route.endpoint).toMatchObject({
+      baseURL: "https://aiplatform.googleapis.com/v1/projects/vertex-project/locations/global/endpoints/openapi",
+      path: "/chat/completions",
+    })
+    expect(responses.route.id).toBe("google-vertex-responses")
+    expect(responses.route.protocol).toBe("openai-responses")
+    expect(responses.route.endpoint).toMatchObject({
+      baseURL: "https://aiplatform.googleapis.com/v1/projects/vertex-project/locations/global/endpoints/openapi",
+      path: "/responses",
+    })
+    expect(responses.route.defaults.providerOptions).toEqual({ openai: { store: false } })
  })

  test("rejects conflicting Vertex auth settings at runtime", async () => {
    const GoogleVertex = await import("@opencode-ai/ai/providers/google-vertex")
-    const GoogleVertexAnthropic = await import("@opencode-ai/ai/providers/google-vertex/anthropic")
+    const GoogleVertexChat = await import("@opencode-ai/ai/providers/google-vertex/chat")
+    const GoogleVertexMessages = await import("@opencode-ai/ai/providers/google-vertex/messages")
+    const GoogleVertexResponses = await import("@opencode-ai/ai/providers/google-vertex/responses")
    const Providers = await import("@opencode-ai/ai/providers")
    expect(() =>
      Reflect.apply(GoogleVertex.model, undefined, [
@@ -225,15 +260,37 @@ describe("provider package entrypoints", () => {
    ])
    expect(() => configured.model("gemini-3.5-flash")).toThrow("Google Vertex accessToken cannot be combined with auth")
    expect(() =>
-      Reflect.apply(GoogleVertexAnthropic.model, undefined, [
+      Reflect.apply(GoogleVertexMessages.model, undefined, [
        "claude-sonnet-4-6",
        { apiKey: "fixture", project: "vertex-project" },
      ]),
-    ).toThrow("Google Vertex Anthropic does not support API keys")
+    ).toThrow("Google Vertex Messages does not support API keys")
    expect(() =>
-      Reflect.apply(Providers.GoogleVertexAnthropic.configure, undefined, [
+      Reflect.apply(Providers.GoogleVertexMessages.configure, undefined, [
        { apiKey: "fixture", project: "vertex-project" },
      ]),
-    ).toThrow("Google Vertex Anthropic does not support API keys")
+    ).toThrow("Google Vertex Messages does not support API keys")
+    expect(() =>
+      Reflect.apply(GoogleVertexChat.model, undefined, [
+        "deepseek-ai/deepseek-v3.2-maas",
+        { apiKey: "fixture", project: "vertex-project" },
+      ]),
+    ).toThrow("Google Vertex Chat does not support API keys")
+    expect(() =>
+      Reflect.apply(Providers.GoogleVertexChat.configure, undefined, [
+        { apiKey: "fixture", project: "vertex-project" },
+      ]),
+    ).toThrow("Google Vertex Chat does not support API keys")
+    expect(() =>
+      Reflect.apply(GoogleVertexResponses.model, undefined, [
+        "xai/grok-4.20-reasoning",
+        { apiKey: "fixture", project: "vertex-project" },
+      ]),
+    ).toThrow("Google Vertex Responses does not support API keys")
+    expect(() =>
+      Reflect.apply(Providers.GoogleVertexResponses.configure, undefined, [
+        { apiKey: "fixture", project: "vertex-project" },
+      ]),
+    ).toThrow("Google Vertex Responses does not support API keys")
  })
 })
@@ -2,10 +2,11 @@ import { describe, expect } from "bun:test"
 import { Effect } from "effect"
 import { HttpClientRequest } from "effect/unstable/http"
 import { LLM } from "../../src"
-import { GoogleVertex, GoogleVertexAnthropic } from "../../src/providers"
+import { GoogleVertex, GoogleVertexChat, GoogleVertexMessages, GoogleVertexResponses } from "../../src/providers"
 import { LLMClient } from "../../src/route"
 import { it } from "../lib/effect"
 import { dynamicResponse } from "../lib/http"
+import { deltaChunk, finishChunk } from "../lib/openai-chunks"
 import { sseEvents } from "../lib/sse"

 describe("Google Vertex providers", () => {
@@ -56,7 +57,7 @@ describe("Google Vertex providers", () => {
    Effect.gen(function* () {
      const response = yield* LLMClient.generate(
        LLM.request({
-          model: GoogleVertexAnthropic.configure({
+          model: GoogleVertexMessages.configure({
            accessToken: "vertex-token",
            location: "eu",
            project: "vertex-project",
@@ -99,11 +100,91 @@ describe("Google Vertex providers", () => {
    }),
  )

-  it.effect("protects the Vertex Anthropic API version from body overlays", () =>
+  it.effect("sends MaaS requests through Vertex Chat Completions", () =>
+    Effect.gen(function* () {
+      const response = yield* LLMClient.generate(
+        LLM.request({
+          model: GoogleVertexChat.configure({
+            accessToken: "vertex-token",
+            location: "global",
+            project: "vertex-project",
+          }).model("deepseek-ai/deepseek-v3.2-maas"),
+          prompt: "Say hello.",
+        }),
+      ).pipe(
+        Effect.provide(
+          dynamicResponse((input) =>
+            Effect.gen(function* () {
+              const request = yield* HttpClientRequest.toWeb(input.request).pipe(Effect.orDie)
+              expect(request.url).toBe(
+                "https://aiplatform.googleapis.com/v1/projects/vertex-project/locations/global/endpoints/openapi/chat/completions",
+              )
+              expect(request.headers.get("authorization")).toBe("Bearer vertex-token")
+              expect(yield* Effect.promise(() => request.json())).toMatchObject({
+                model: "deepseek-ai/deepseek-v3.2-maas",
+                messages: [{ role: "user", content: "Say hello." }],
+                stream: true,
+                stream_options: { include_usage: true },
+              })
+              return input.respond(sseEvents(deltaChunk({ content: "Hello." }), finishChunk("stop")), {
+                headers: { "content-type": "text/event-stream" },
+              })
+            }),
+          ),
+        ),
+      )
+
+      expect(response.text).toBe("Hello.")
+    }),
+  )
+
+  it.effect("sends Grok requests through Vertex Responses", () =>
+    Effect.gen(function* () {
+      const response = yield* LLMClient.generate(
+        LLM.request({
+          model: GoogleVertexResponses.configure({
+            accessToken: "vertex-token",
+            location: "global",
+            project: "vertex-project",
+          }).model("xai/grok-4.20-reasoning"),
+          prompt: "Say hello.",
+        }),
+      ).pipe(
+        Effect.provide(
+          dynamicResponse((input) =>
+            Effect.gen(function* () {
+              const request = yield* HttpClientRequest.toWeb(input.request).pipe(Effect.orDie)
+              expect(request.url).toBe(
+                "https://aiplatform.googleapis.com/v1/projects/vertex-project/locations/global/endpoints/openapi/responses",
+              )
+              expect(request.headers.get("authorization")).toBe("Bearer vertex-token")
+              expect(yield* Effect.promise(() => request.json())).toMatchObject({
+                model: "xai/grok-4.20-reasoning",
+                input: [{ role: "user", content: [{ type: "input_text", text: "Say hello." }] }],
+                store: false,
+                stream: true,
+              })
+              return input.respond(
+                sseEvents(
+                  { type: "response.output_text.delta", item_id: "msg_1", delta: "Hello." },
+                  { type: "response.completed", response: { id: "resp_1" } },
+                ),
+                { headers: { "content-type": "text/event-stream" } },
+              )
+            }),
+          ),
+        ),
+      )
+
+      expect(response.text).toBe("Hello.")
+    }),
+  )
+
+  it.effect("protects the Vertex Messages API version from body overlays", () =>
    Effect.gen(function* () {
      const error = yield* LLMClient.prepare(
        LLM.request({
-          model: GoogleVertexAnthropic.configure({
+          model: GoogleVertexMessages.configure({
            accessToken: "vertex-token",
            http: { body: { anthropic_version: "wrong" } },
            project: "vertex-project",
@@ -31,13 +31,11 @@ function run(target) {

 const envPath = process.env.OPENCODE_BIN_PATH
 const scriptDir = path.dirname(fs.realpathSync(__filename))
-const command = path.basename(__filename).replace(/\.cjs$/, "")
-const nodeBuild = command === "opencode2-node"
-const cached = path.join(scriptDir, `.${command}`)
+const cached = path.join(scriptDir, ".opencode2")
 const platform = { darwin: "darwin", linux: "linux", win32: "windows" }[os.platform()] || os.platform()
 const arch = { x64: "x64", arm64: "arm64", arm: "arm" }[os.arch()] || os.arch()
-const base = `@opencode-ai/cli${nodeBuild ? "-node" : ""}-` + platform + "-" + arch
-const binary = platform === "windows" ? `${command}.exe` : command
+const base = "@opencode-ai/cli-" + platform + "-" + arch
+const binary = platform === "windows" ? "opencode2.exe" : "opencode2"

 function supportsAvx2() {
  if (arch !== "x64") return false
@@ -79,7 +77,6 @@ function supportsAvx2() {
 }

 const names = (() => {
-  if (nodeBuild) return [base]
  const baseline = arch === "x64" && !supportsAvx2()
  if (platform === "linux") {
    const musl = (() => {
@@ -124,7 +121,7 @@ function findBinary(startDir) {
 const resolved = envPath || (fs.existsSync(cached) ? cached : findBinary(scriptDir))
 if (!resolved) {
  console.error(
-    `It seems that your package manager failed to install the right ${command} CLI package. Try manually installing ` +
+    "It seems that your package manager failed to install the right opencode2 CLI package. Try manually installing " +
      names.map((name) => `"${name}"`).join(" or ") +
      " package",
  )
@@ -26,7 +26,6 @@
  },
  "scripts": {
    "build": "bun run script/build.ts",
-    "build:node": "bun run script/build-node.ts",
    "dev": "bun run src/index.ts",
    "test": "bun test --timeout 30000 --only-failures",
    "typecheck": "tsgo --noEmit"
@@ -52,8 +51,7 @@
    "semver": "catalog:",
    "solid-js": "catalog:",
    "strip-ansi": "7.1.2",
-    "uqr": "0.1.3",
-    "ws": "8.21.0"
+    "uqr": "0.1.3"
  },
  "devDependencies": {
    "@opencode-ai/script": "workspace:*",
@@ -61,19 +59,6 @@
    "@tsconfig/bun": "catalog:",
    "@types/bun": "catalog:",
    "@types/semver": "catalog:",
-    "@typescript/native-preview": "catalog:",
-    "@lydell/node-pty-darwin-arm64": "1.2.0-beta.12",
-    "@lydell/node-pty-darwin-x64": "1.2.0-beta.12",
-    "@lydell/node-pty-linux-arm64": "1.2.0-beta.12",
-    "@lydell/node-pty-linux-x64": "1.2.0-beta.12",
-    "@lydell/node-pty-win32-arm64": "1.2.0-beta.12",
-    "@lydell/node-pty-win32-x64": "1.2.0-beta.12",
-    "@parcel/watcher-darwin-arm64": "2.5.1",
-    "@parcel/watcher-linux-arm64-glibc": "2.5.1",
-    "@parcel/watcher-linux-x64-glibc": "2.5.1",
-    "@parcel/watcher-win32-arm64": "2.5.1",
-    "@parcel/watcher-win32-x64": "2.5.1",
-    "vite": "catalog:",
-    "vite-plugin-solid": "catalog:"
+    "@typescript/native-preview": "catalog:"
  }
 }
@@ -1,201 +0,0 @@
-#!/usr/bin/env bun
-
-import { spawnSync } from "node:child_process"
-import { createHash } from "node:crypto"
-import { chmod, copyFile, mkdir, mkdtemp, realpath, rename, rm, stat, writeFile } from "node:fs/promises"
-import os from "node:os"
-import path from "node:path"
-import { build } from "vite"
-import { Script } from "@opencode-ai/script"
-import pkg from "../package.json"
-import { modelsData } from "./generate"
-import { collectNodeAssets, copyNodeAssets, hashNodeAssets, seaAssetMap } from "./node-assets"
-import { mainConfig } from "../vite.node.config"
-import { nodeExecArgv, nodeTarget, type NodeTarget } from "../src/node/target"
-
-const NODE_VERSION = "26.4.0"
-const dir = path.resolve(import.meta.dirname, "..")
-const outdir = path.resolve(
-  dir,
-  process.argv.find((arg) => arg.startsWith("--outdir="))?.slice("--outdir=".length) ?? "dist",
-)
-if (outdir === dir) throw new Error("--outdir must not be the package directory")
-if (outdir === path.join(dir, "dist-node")) {
-  throw new Error("--outdir must not be dist-node because it contains temporary files")
-}
-const bundleOnly = process.argv.includes("--bundle-only")
-const single = process.argv.includes("--single")
-const skipInstall = process.argv.includes("--skip-install")
-const requested = process.argv.find((arg) => arg.startsWith("--target="))?.slice("--target=".length)
-const allTargets = [
-  nodeTarget("linux", "arm64"),
-  nodeTarget("linux", "x64"),
-  nodeTarget("darwin", "arm64"),
-  nodeTarget("win32", "arm64"),
-  nodeTarget("win32", "x64"),
-]
-const targets = requested
-  ? allTargets.filter((target) => targetName(target) === requested)
-  : single || bundleOnly
-    ? [nodeTarget(process.platform, process.arch)]
-    : allTargets
-
-if (targets.length === 0) {
-  if (requested === "darwin-x64") throw new Error("Node 26.4 SEA does not support macOS x64")
-  throw new Error(`Unknown Node target: ${requested}`)
-}
-if (!bundleOnly && targets.some((target) => target.platform === "darwin" && target.arch === "x64")) {
-  throw new Error("Node 26.4 SEA does not support macOS x64")
-}
-
-process.chdir(dir)
-if (!skipInstall) run(process.execPath, ["install", "--os=*", "--cpu=*"])
-if (!bundleOnly) await rm(outdir, { recursive: true, force: true })
-const builder =
-  !bundleOnly || targets.some((target) => target.platform === process.platform && target.arch === process.arch)
-    ? await resolveHostNode()
-    : undefined
-
-for (const target of targets) {
-  console.log(`building cli-node-${targetName(target)}`)
-  const assets = await collectNodeAssets(target)
-  await rm("dist-node", { recursive: true, force: true })
-  const assetHash = await hashNodeAssets(assets)
-  const input = { version: Script.version, channel: Script.channel, models: modelsData, assetHash, target }
-  await build(mainConfig(input))
-  await copyNodeAssets(assets)
-
-  const host = target.platform === process.platform && target.arch === process.arch
-  if (host) {
-    if (!builder) throw new Error("Node SEA builder is unavailable")
-    run(builder, [...nodeExecArgv, "dist-node/opencode.mjs", "--version"])
-    run(builder, [...nodeExecArgv, "dist-node/opencode.mjs", "--help"])
-  }
-  if (bundleOnly) continue
-
-  const name = `cli-node-${targetName(target)}`
-  const binary = target.platform === "win32" ? "opencode2-node.exe" : "opencode2-node"
-  const output = path.join(outdir, name, "bin", binary)
-  if (!builder) throw new Error("Node SEA builder is unavailable")
-  await mkdir(path.dirname(output), { recursive: true })
-  const config = {
-    main: "dist-node/opencode.mjs",
-    mainFormat: "module",
-    executable: await resolveTargetNode(target, builder),
-    output: path.relative(dir, output),
-    disableExperimentalSEAWarning: true,
-    useSnapshot: false,
-    useCodeCache: false,
-    execArgv: nodeExecArgv,
-    execArgvExtension: "none",
-    assets: await seaAssetMap(),
-  }
-  await writeFile("dist-node/sea.json", `${JSON.stringify(config, null, 2)}\n`)
-  run(builder, ["--build-sea", "dist-node/sea.json"])
-  if (target.platform !== "win32") await chmod(output, 0o755)
-  if (target.platform === "darwin" && process.platform === "darwin") run("codesign", ["--sign", "-", output])
-  if (target.platform === "darwin" && process.platform !== "darwin") {
-    console.warn(`${output} must be signed on macOS before it can run`)
-  }
-  await writeFile(
-    path.join(outdir, name, "package.json"),
-    `${JSON.stringify(
-      {
-        name: `@opencode-ai/${name}`,
-        version: Script.version,
-        license: pkg.license,
-        repository: { type: "git", url: "git+https://github.com/anomalyco/opencode.git" },
-        os: [target.platform],
-        cpu: [target.arch],
-      },
-      null,
-      2,
-    )}\n`,
-  )
-  if (host) await smoke(output)
-}
-
-async function resolveHostNode() {
-  const candidates = [process.env.NODE_BIN, "node"].filter((item): item is string => Boolean(item))
-  for (const candidate of candidates) {
-    const result = spawnSync(
-      candidate,
-      ["-p", "JSON.stringify({version:process.versions.node,path:process.execPath})"],
-      {
-        encoding: "utf8",
-      },
-    )
-    if (result.status !== 0) continue
-    const info = JSON.parse(result.stdout) as { version: string; path: string }
-    if (info.version === NODE_VERSION) return realpath(info.path)
-  }
-  return resolveTargetNode(nodeTarget(process.platform, process.arch))
-}
-
-async function resolveTargetNode(target: NodeTarget, host?: string) {
-  if (host && target.platform === process.platform && target.arch === process.arch) return host
-  const cache = path.resolve(dir, ".cache", "node")
-  const platform = target.platform === "win32" ? "win" : target.platform
-  const archiveName = `node-v${NODE_VERSION}-${platform}-${target.arch}`
-  const targetDirectory = path.join(cache, archiveName)
-  const executable = path.join(targetDirectory, target.platform === "win32" ? "node.exe" : "bin/node")
-  if (
-    (await stat(executable).then(
-      () => true,
-      () => false,
-    )) &&
-    (await stat(path.join(targetDirectory, ".verified")).then(
-      () => true,
-      () => false,
-    ))
-  )
-    return realpath(executable)
-  await mkdir(cache, { recursive: true })
-  const extension = target.platform === "win32" ? "zip" : "tar.gz"
-  const filename = `${archiveName}.${extension}`
-  const archive = path.join(cache, filename)
-  const base = `https://nodejs.org/dist/v${NODE_VERSION}`
-  const [response, sums] = await Promise.all([fetch(`${base}/${filename}`), fetch(`${base}/SHASUMS256.txt`)])
-  if (!response.ok) throw new Error(`Failed to download Node ${NODE_VERSION}: ${response.status}`)
-  if (!sums.ok) throw new Error(`Failed to download Node ${NODE_VERSION} checksums: ${sums.status}`)
-  const data = new Uint8Array(await response.arrayBuffer())
-  const expected = (await sums.text())
-    .split("\n")
-    .find((line) => line.endsWith(`  ${filename}`))
-    ?.split(/\s+/)[0]
-  if (!expected) throw new Error(`Missing checksum for ${filename}`)
-  if (createHash("sha256").update(data).digest("hex") !== expected) throw new Error(`Checksum mismatch for ${filename}`)
-  await writeFile(archive, data)
-  const temporary = path.join(cache, `${archiveName}.${process.pid}.tmp`)
-  await rm(temporary, { recursive: true, force: true })
-  await mkdir(temporary)
-  if (target.platform !== "win32") run("tar", ["-xzf", archive, "-C", temporary])
-  else if (process.platform === "win32") run("tar", ["-xf", archive, "-C", temporary])
-  else run("unzip", ["-q", archive, "-d", temporary])
-  await rm(targetDirectory, { recursive: true, force: true })
-  await rename(path.join(temporary, archiveName), targetDirectory)
-  await writeFile(path.join(targetDirectory, ".verified"), `${expected}\n`)
-  await rm(temporary, { recursive: true, force: true })
-  await rm(archive, { force: true })
-  return realpath(executable)
-}
-
-async function smoke(output: string) {
-  const root = await mkdtemp(path.join(os.tmpdir(), "opencode-node-smoke-"))
-  const executable = path.join(root, path.basename(output))
-  await copyFile(output, executable)
-  if (process.platform !== "win32") await chmod(executable, 0o755)
-  run(executable, ["--version"], root)
-  run(executable, ["--help"], root)
-  await rm(root, { recursive: true, force: true })
-}
-
-function targetName(target: NodeTarget) {
-  return `${target.platform === "win32" ? "windows" : target.platform}-${target.arch}`
-}
-
-function run(command: string, args: readonly string[], cwd = dir) {
-  const result = spawnSync(command, args, { cwd, stdio: "inherit", env: process.env })
-  if (result.error) throw result.error
-  if (result.status !== 0) throw new Error(`${command} exited with status ${result.status ?? "unknown"}`)
-}
@@ -1,6 +1,7 @@
 #!/usr/bin/env bun

 import { $ } from "bun"
+import fs from "fs"
 import { rm } from "fs/promises"
 import path from "path"
 import { Script } from "@opencode-ai/script"
@@ -10,14 +11,9 @@ import { modelsData } from "./generate"

 const dir = path.resolve(import.meta.dirname, "..")
 const binary = "opencode2"
-const outdir = path.resolve(
-  dir,
-  process.argv.find((arg) => arg.startsWith("--outdir="))?.slice("--outdir=".length) ?? "dist",
-)
-if (outdir === dir) throw new Error("--outdir must not be the package directory")
 process.chdir(dir)

-await rm(outdir, { recursive: true, force: true })
+await rm("dist", { recursive: true, force: true })

 const singleFlag = process.argv.includes("--single")
 const baselineFlag = process.argv.includes("--baseline")
@@ -54,6 +50,10 @@ const targets = singleFlag

 if (!skipInstall) await $`bun install --os="*" --cpu="*" @opentui/core@${pkg.dependencies["@opentui/core"]}`

+const localParserWorker = path.resolve(dir, "node_modules/@opentui/core/parser.worker.js")
+const rootParserWorker = path.resolve(dir, "../../node_modules/@opentui/core/parser.worker.js")
+const parserWorker = fs.realpathSync(fs.existsSync(localParserWorker) ? localParserWorker : rootParserWorker)
+
 for (const item of targets) {
  const target = [
    binary,
@@ -67,7 +67,7 @@ for (const item of targets) {
  const name = target.replace(binary, "cli")
  console.log(`building ${name}`)
  const result = await Bun.build({
-    entrypoints: ["./src/index.ts"],
+    entrypoints: ["./src/index.ts", parserWorker],
    tsconfig: "./tsconfig.json",
    plugins: [plugin],
    external: ["node-gyp"],
@@ -81,7 +81,7 @@ for (const item of targets) {
      autoloadTsconfig: true,
      autoloadPackageJson: true,
      target: target.replace(binary, "bun") as Bun.Build.CompileTarget,
-      outfile: path.join(outdir, name, "bin", binary),
+      outfile: `./dist/${name}/bin/${binary}`,
      execArgv: [`--user-agent=${binary}/${Script.version}`, "--use-system-ca", "--"],
      windows: {},
    },
@@ -93,6 +93,10 @@ for (const item of targets) {
      OPENCODE_LIBC: item.os === "linux" ? `'${item.abi ?? "glibc"}'` : "undefined",
      // FFF_LIBC selects the fff native lib variant: "musl" or "gnu".
      FFF_LIBC: item.os === "linux" ? `'${item.abi ?? "gnu"}'` : "undefined",
+      OTUI_TREE_SITTER_WORKER_PATH:
+        (item.os === "win32" ? '"B:/~BUN/root/' : '"/$bunfs/root/') +
+        path.relative(dir, parserWorker).replaceAll("\\", "/") +
+        '"',
      ...(item.os === "linux" ? { "process.env.OPENTUI_LIBC": JSON.stringify(item.abi ?? "glibc") } : {}),
    },
  })
@@ -103,7 +107,7 @@ for (const item of targets) {
  }

  await Bun.write(
-    path.join(outdir, name, "package.json"),
+    `./dist/${name}/package.json`,
    JSON.stringify(
      {
        name: `@opencode-ai/${name}`,
@@ -1,9 +1,7 @@
-import { readFile } from "node:fs/promises"
-
 const modelsUrl = process.env.OPENCODE_MODELS_URL || "https://models.dev"

 export const modelsData = process.env.MODELS_DEV_API_JSON
-  ? await readFile(process.env.MODELS_DEV_API_JSON, "utf8")
+  ? await Bun.file(process.env.MODELS_DEV_API_JSON).text()
  : await fetch(`${modelsUrl}/api.json`).then((response) => response.text())

 console.log("Loaded models.dev snapshot")
@@ -1,83 +0,0 @@
-import { createHash } from "node:crypto"
-import { copyFile, mkdir, readdir, readFile, stat } from "node:fs/promises"
-import { createRequire } from "node:module"
-import path from "node:path"
-import { fileURLToPath } from "node:url"
-import { getNodeAssets } from "@opentui/core/node-assets"
-import { attentionSoundAssets, type NodeTarget, photonWasmAsset } from "../src/node/target"
-
-const dir = path.resolve(import.meta.dirname, "..")
-
-// Bun's compiler discovers file imports and embeds them in its virtual filesystem. Vite only bundles the JavaScript
-// portion of the Node executable, while SEA embeds only the assets explicitly listed in its build configuration.
-// Collect and stage those files under stable keys so the SEA prelude can extract them to real paths at startup;
-// native addons, helper executables, and other path-based consumers cannot use assets directly from SEA memory.
-export type NodeAsset = {
-  readonly key: string
-  readonly source: string
-}
-
-async function files(root: string, current = root): Promise<string[]> {
-  return (
-    await Promise.all(
-      (await readdir(current, { withFileTypes: true })).map((entry) => {
-        const target = path.join(current, entry.name)
-        return entry.isDirectory() ? files(root, target) : [path.relative(root, target)]
-      }),
-    )
-  ).flat()
-}
-
-export async function collectNodeAssets(target: NodeTarget) {
-  const ptyEntry = fileURLToPath(import.meta.resolve(target.nodePtyPackage))
-  const ptyRoot = path.resolve(path.dirname(ptyEntry), "..")
-  const assets: NodeAsset[] = [
-    ...getNodeAssets({
-      platform: target.platform,
-      arch: target.arch,
-      ...(target.platform === "linux" ? { libc: "glibc" as const } : {}),
-    }),
-    { key: target.parcelWatcherAsset, source: fileURLToPath(import.meta.resolve(target.parcelWatcherPackage)) },
-    {
-      key: photonWasmAsset,
-      source: createRequire(path.resolve(dir, "../core/package.json")).resolve(photonWasmAsset),
-    },
-    ...attentionSoundAssets.map((key) => ({
-      key,
-      source: path.resolve(dir, "../ui/src/assets/audio", path.basename(key)),
-    })),
-    ...(await files(ptyRoot))
-      .filter((relative) => !relative.endsWith(".map") && !relative.endsWith(".pdb"))
-      .map((relative) => ({
-        key: `${target.nodePtyPackage}/${relative}`,
-        source: path.join(ptyRoot, relative),
-      })),
-  ]
-  await Promise.all(assets.map((asset) => stat(asset.source)))
-  return assets
-}
-
-export async function hashNodeAssets(assets: readonly NodeAsset[]) {
-  const hash = createHash("sha256")
-  for (const asset of assets.toSorted((left, right) => left.key.localeCompare(right.key))) {
-    hash.update(asset.key)
-    hash.update(await readFile(asset.source))
-  }
-  return hash.digest("hex").slice(0, 16)
-}
-
-export async function copyNodeAssets(assets: readonly NodeAsset[]) {
-  const root = path.join(dir, "dist-node", "assets")
-  await Promise.all(
-    assets.map(async (asset) => {
-      const target = path.join(root, asset.key)
-      await mkdir(path.dirname(target), { recursive: true })
-      await copyFile(asset.source, target)
-    }),
-  )
-}
-
-export async function seaAssetMap() {
-  const root = path.join(dir, "dist-node", "assets")
-  return Object.fromEntries((await files(root)).map((key) => [key.replaceAll(path.sep, "/"), path.join(root, key)]))
-}
@@ -18,55 +18,37 @@ async function publish(dir: string, name: string, version: string) {
  await $`npm publish *.tgz --access public --tag ${Script.channel}`.cwd(dir)
 }

-async function publishDistribution(input: { root: string; name: string; binary: string; packagePrefix: string }) {
-  const binaries: Record<string, string> = {}
-  for (const filepath of new Bun.Glob("*/package.json").scanSync({ cwd: input.root })) {
-    const item = await Bun.file(`${input.root}/${filepath}`).json()
-    if (!item.name.startsWith(input.packagePrefix)) continue
-    binaries[item.name] = item.version
-  }
-  console.log(input.name, "binaries", binaries)
-  const versions = new Set(Object.values(binaries))
-  if (versions.size > 1) throw new Error(`Binary package versions do not match for ${input.name}`)
-  const version = versions.values().next().value
-  if (!version) throw new Error(`No binary packages found for ${input.name}`)
-
-  await $`mkdir -p ${input.root}/${input.name}/bin`
-  await $`cp ./bin/opencode2.cjs ${input.root}/${input.name}/bin/${input.binary}`
-  await Bun.file(`${input.root}/${input.name}/package.json`).write(
-    JSON.stringify(
-      {
-        name: input.name,
-        bin: { [input.binary]: `./bin/${input.binary}` },
-        version,
-        license: pkg.license,
-        repository: { type: "git", url: "git+https://github.com/anomalyco/opencode.git" },
-        os: ["darwin", "linux", "win32"],
-        cpu: ["arm64", "x64"],
-        optionalDependencies: binaries,
-      },
-      null,
-      2,
-    ),
-  )
-
-  await Promise.all(
-    Object.entries(binaries).map(([name, version]) =>
-      publish(`${input.root}/${name.replace("@opencode-ai/", "")}`, name, version),
-    ),
-  )
-  await publish(`${input.root}/${input.name}`, input.name, version)
+const binaries: Record<string, string> = {}
+for (const filepath of new Bun.Glob("*/package.json").scanSync({ cwd: "./dist" })) {
+  const item = await Bun.file(`./dist/${filepath}`).json()
+  binaries[item.name] = item.version
 }
+console.log("binaries", binaries)
+const version = Object.values(binaries)[0]
+const name = pkg.name

-await publishDistribution({
-  root: "./dist",
-  name: pkg.name,
-  binary: "opencode2",
-  packagePrefix: "@opencode-ai/cli-",
-})
-await publishDistribution({
-  root: "./dist/node",
-  name: "opencode2-node",
-  binary: "opencode2-node",
-  packagePrefix: "@opencode-ai/cli-node-",
-})
+await $`mkdir -p ./dist/${name}/bin`
+await $`cp ./bin/opencode2.cjs ./dist/${name}/bin/opencode2`
+await Bun.file(`./dist/${name}/package.json`).write(
+  JSON.stringify(
+    {
+      name,
+      bin: { opencode2: "./bin/opencode2" },
+      version,
+      license: pkg.license,
+      repository: { type: "git", url: "git+https://github.com/anomalyco/opencode.git" },
+      os: ["darwin", "linux", "win32"],
+      cpu: ["arm64", "x64"],
+      optionalDependencies: binaries,
+    },
+    null,
+    2,
+  ),
+)
+
+await Promise.all(
+  Object.entries(binaries).map(([name, version]) =>
+    publish(`./dist/${name.replace("@opencode-ai/", "")}`, name, version),
+  ),
+)
+await publish(`./dist/${name}`, name, version)
@@ -7,10 +7,9 @@ import fs from "node:fs/promises"
 import os from "node:os"
 import path from "node:path"

-const nodeBuild = process.argv.includes("--node")
-const target = `cli${nodeBuild ? "-node" : ""}-${process.platform === "win32" ? "windows" : process.platform}-${process.arch}`
-const directory = path.join(import.meta.dir, "..", "dist", ...(nodeBuild ? ["node"] : []), target, "bin")
-const binary = path.join(directory, `opencode2${nodeBuild ? "-node" : ""}${process.platform === "win32" ? ".exe" : ""}`)
+const target = `cli-${process.platform === "win32" ? "windows" : process.platform}-${process.arch}`
+const directory = path.join(import.meta.dir, "..", "dist", target, "bin")
+const binary = path.join(directory, `opencode2${process.platform === "win32" ? ".exe" : ""}`)
 if (!(await Bun.file(binary).exists())) throw new Error(`Missing compiled CLI in ${directory}`)

 const root = await fs.mkdtemp(path.join(os.tmpdir(), "opencode-service-smoke-"))
@@ -1,6 +1,5 @@
 import { EOL } from "node:os"
 import path from "node:path"
-import { readFile, stat, writeFile } from "node:fs/promises"
 import { Effect, Option } from "effect"
 import { applyEdits, modify } from "jsonc-parser"
 import { Global } from "@opencode-ai/core/global"
@@ -36,7 +35,7 @@ export default Runtime.handler(
  }),
 )

-export async function resolveConfigPath(directory: string) {
+async function resolveConfigPath(directory: string) {
  const candidates = [
    path.join(directory, "opencode.json"),
    path.join(directory, "opencode.jsonc"),
@@ -44,24 +43,16 @@ export async function resolveConfigPath(directory: string) {
    path.join(directory, ".opencode", "opencode.jsonc"),
  ]
  for (const candidate of candidates) {
-    if (
-      await stat(candidate).then(
-        (info) => info.isFile(),
-        () => false,
-      )
-    )
-      return candidate
+    if (await Bun.file(candidate).exists()) return candidate
  }
  return candidates[0]
 }

 async function write(configPath: string, name: string, server: unknown) {
-  const text = await readFile(configPath, "utf8").catch((error) => {
-    if (typeof error === "object" && error !== null && "code" in error && error.code === "ENOENT") return "{}"
-    throw error
-  })
+  const file = Bun.file(configPath)
+  const text = (await file.exists()) ? await file.text() : "{}"
  const edits = modify(text, ["mcp", "servers", name], server, {
    formattingOptions: { tabSize: 2, insertSpaces: true },
  })
-  await writeFile(configPath, applyEdits(text, edits))
+  await Bun.write(configPath, applyEdits(text, edits))
 }
@@ -4,7 +4,6 @@ import { useTerminalDimensions } from "@opentui/solid"
 import { createEffect, createMemo, createSignal, type Accessor } from "solid-js"
 import { transparent, type RunFooterTheme } from "./theme"
 import { Locale } from "@opencode-ai/tui/util/locale"
-import { stringWidth } from "@opencode-ai/tui/util/string-width"

 export const FOOTER_MENU_ROWS = 8

@@ -197,7 +196,7 @@ export function RunFooterMenu(props: {
      ...props
        .items()
        .filter((item) => item.description)
-        .map((item) => stringWidth(item.display)),
+        .map((item) => Bun.stringWidth(item.display)),
    )
    return width === 0 ? 0 : width + 2
  })
@@ -206,14 +205,14 @@ export function RunFooterMenu(props: {
      return ""
    }

-    return " ".repeat(Math.max(1, descriptionColumn() - stringWidth(item.display)))
+    return " ".repeat(Math.max(1, descriptionColumn() - Bun.stringWidth(item.display)))
  }
  const descriptionText = (item: RunFooterMenuItem) => {
    if (!item.description) {
      return
    }

-    const footerWidth = item.footer ? stringWidth(item.footer) + 1 : 0
+    const footerWidth = item.footer ? Bun.stringWidth(item.footer) + 1 : 0
    const available =
      term().width -
      (border() ? 1 : 0) -
@@ -5,15 +5,14 @@
 // It produces a PromptState that RunPromptBody renders as a slim single-line
 // composer while the footer view renders any active menus below it.
 /** @jsxImportSource @opentui/solid */
+import { pathToFileURL } from "bun"
 import { StyledText, fg, type ColorInput, type KeyEvent, type TextareaRenderable } from "@opentui/core"
 import { useRenderer } from "@opentui/solid"
 import { normalizePromptContent } from "@opencode-ai/tui/prompt/content"
 import fuzzysort from "fuzzysort"
 import path from "path"
-import { pathToFileURL } from "node:url"
 import { createEffect, createMemo, createResource, createSignal, onCleanup, onMount, type Accessor } from "solid-js"
 import { Locale } from "@opencode-ai/tui/util/locale"
-import { stringWidth } from "@opencode-ai/tui/util/string-width"
 import {
  createPromptHistory,
  displayCharAt,
@@ -603,7 +602,7 @@ export function createPromptState(input: PromptInput): PromptState {
    })
  }

-  const restore = (value: RunPrompt, cursor = stringWidth(value.text)) => {
+  const restore = (value: RunPrompt, cursor = Bun.stringWidth(value.text)) => {
    draft = clonePrompt(value)
    setShell(value.mode === "shell")
    if (!area || area.isDestroyed) {
@@ -613,7 +612,7 @@ export function createPromptState(input: PromptInput): PromptState {
    hide()
    area.setText(value.text)
    restoreParts(value.parts)
-    area.cursorOffset = Math.min(cursor, stringWidth(area.plainText))
+    area.cursorOffset = Math.min(cursor, Bun.stringWidth(area.plainText))
    scheduleRows()
    area.focus()
  }
@@ -644,7 +643,7 @@ export function createPromptState(input: PromptInput): PromptState {
    area.setText(text)
    clearParts()
    draft = shell() ? { text: area.plainText, parts: [], mode: "shell" } : { text: area.plainText, parts: [] }
-    area.cursorOffset = Math.min(stringWidth(text), stringWidth(area.plainText))
+    area.cursorOffset = Math.min(Bun.stringWidth(text), Bun.stringWidth(area.plainText))
    scheduleRows()
    area.focus()
  }
@@ -778,7 +777,7 @@ export function createPromptState(input: PromptInput): PromptState {
    if (move(dir, event)) return
    if (!area || area.isDestroyed) return false

-    const endOffset = stringWidth(area.plainText)
+    const endOffset = Bun.stringWidth(area.plainText)
    if (dir === -1) {
      if (area.cursorOffset === 0) return false
      if (area.visualCursor.visualRow === 0) {
@@ -887,12 +886,16 @@ export function createPromptState(input: PromptInput): PromptState {
      area.cursorOffset = 0
      const start = area.logicalCursor
      area.cursorOffset =
-        shell() || !head ? cursor : local ? stringWidth(area.plainText) : stringWidth(area.plainText.slice(0, head.end))
+        shell() || !head
+          ? cursor
+          : local
+            ? Bun.stringWidth(area.plainText)
+            : Bun.stringWidth(area.plainText.slice(0, head.end))
      const end = area.logicalCursor

      area.deleteRange(start.row, start.col, end.row, end.col)
      area.insertText(text)
-      area.cursorOffset = stringWidth(text)
+      area.cursorOffset = Bun.stringWidth(text)
      hide()
      syncDraft()
      if (!shell()) {
@@ -917,7 +920,7 @@ export function createPromptState(input: PromptInput): PromptState {

    const text = "@" + next.value
    const startOffset = at()
-    const endOffset = startOffset + stringWidth(text)
+    const endOffset = startOffset + Bun.stringWidth(text)
    const part = structuredClone(next.part)
    if (part.type === "agent") {
      part.source = {
@@ -4,8 +4,6 @@ import { ServerConnection } from "../services/server-connection"
 import { waitForCatalogReady } from "./catalog.shared"
 import { INTERACTIVE_INPUT_ERROR, resolveInteractiveStdin } from "./runtime.stdin"
 import type { RunInput, RunTuiConfig } from "./types"
-import { readStdin } from "../util/io"
-import { setTimeout } from "node:timers/promises"

 export type MiniCommandInput = {
  server: ServerConnection.Resolved
@@ -24,7 +22,7 @@ export type MiniCommandInput = {
 type Session = Awaited<ReturnType<OpenCodeClient["session"]["get"]>>
 export async function runMini(input: MiniCommandInput) {
  validate(input)
-  const initialInput = mergeInput(process.stdin.isTTY ? undefined : await readStdin(), input.prompt)
+  const initialInput = mergeInput(process.stdin.isTTY ? undefined : await Bun.stdin.text(), input.prompt)
  const runtimeTask = import("./runtime")
  const directory = localDirectory()

@@ -125,7 +123,7 @@ async function validateAgent(sdk: OpenCodeClient, directory: string, name?: stri
      return
    }
    if (agent) return name
-    await setTimeout(25)
+    await Bun.sleep(25)
  }
  if (!agents) {
    warning("failed to list agents. Falling back to default agent")
@@ -1,7 +1,6 @@
 import type { EventSubscribeOutput, OpenCodeClient } from "@opencode-ai/client/promise"
 import { SessionMessage } from "@opencode-ai/schema/session-message"
 import { EOL } from "node:os"
-import { readFile } from "node:fs/promises"
 import { UI } from "./ui"
 import type { MiniToolPart } from "./types"

@@ -479,11 +478,11 @@ async function prepareFile(file: File) {
  if (file.mime !== "text/plain") {
    const uri = file.url.startsWith("data:")
      ? file.url
-      : `data:${file.mime};base64,${(await readFile(new URL(file.url))).toString("base64")}`
+      : `data:${file.mime};base64,${Buffer.from(await Bun.file(new URL(file.url)).arrayBuffer()).toString("base64")}`
    return { attachment: { uri, mime: file.mime, name: file.filename } }
  }
  const content = file.url.startsWith("data:")
    ? Buffer.from(file.url.slice(file.url.indexOf(",") + 1), "base64").toString("utf8")
-    : await readFile(new URL(file.url), "utf8")
+    : await Bun.file(new URL(file.url)).text()
  return { text: `<file name="${file.filename}">\n${content}\n</file>` }
 }
@@ -8,7 +8,6 @@
 // the current draft is saved and history begins. Arrowing past the end
 // restores the draft.
 export { displayCharAt, displaySlice, mentionTriggerIndex } from "@opencode-ai/tui/prompt/display"
-import { stringWidth } from "@opencode-ai/tui/util/string-width"
 import type { RunPrompt } from "./types"

 const HISTORY_LIMIT = 200
@@ -103,7 +102,7 @@ export function movePromptHistory(state: PromptHistoryState, dir: -1 | 1, text:
    return { state, apply: false }
  }

-  if (dir === 1 && cursor !== stringWidth(text)) {
+  if (dir === 1 && cursor !== Bun.stringWidth(text)) {
    return { state, apply: false }
  }

@@ -137,7 +136,7 @@ export function movePromptHistory(state: PromptHistoryState, dir: -1 | 1, text:
        index: null,
      },
      text: state.draft,
-      cursor: stringWidth(state.draft),
+      cursor: Bun.stringWidth(state.draft),
      apply: true,
    }
  }
@@ -148,7 +147,7 @@ export function movePromptHistory(state: PromptHistoryState, dir: -1 | 1, text:
      index: idx,
    },
    text: state.items[idx].text,
-    cursor: dir === -1 ? 0 : stringWidth(state.items[idx].text),
+    cursor: dir === -1 ? 0 : Bun.stringWidth(state.items[idx].text),
    apply: true,
  }
 }
@@ -4,7 +4,6 @@ import { FSUtil } from "@opencode-ai/core/fs-util"
 import { Model } from "@opencode-ai/schema/model"
 import { open } from "node:fs/promises"
 import path from "node:path"
-import { readStdin } from "../util/io"
 import { ServerConnection } from "../services/server-connection"
 import { loadRunAgents, waitForCatalogReady } from "./catalog.shared"
 import { runNonInteractivePrompt } from "./noninteractive"
@@ -49,7 +48,7 @@ async function run(input: RunCommandInput) {
  if (input.fork && !input.continue && !input.session) fail("--fork requires --continue or --session")
  const root = process.env.PWD ?? process.cwd()
  const directory = localDirectory(root)
-  const message = mergeInput(formatMessage(input.message), process.stdin.isTTY ? undefined : await readStdin())
+  const message = mergeInput(formatMessage(input.message), process.stdin.isTTY ? undefined : await Bun.stdin.text())
  if (!message?.trim()) fail("You must provide a message")
  const files = await Promise.all(input.file.map((file) => prepareFile(file, root)))
  const prepared = { directory, message, files }
@@ -1,4 +1,3 @@
-import { readFile } from "node:fs/promises"
 import type {
  EventSubscribeOutput,
  OpenCodeClient,
@@ -162,7 +161,7 @@ async function prepareFile(file: RunFilePart) {
  if (file.mime !== "text/plain") return { attachment: { uri: file.url, name: file.filename } }
  const content = file.url.startsWith("data:")
    ? Buffer.from(file.url.slice(file.url.indexOf(",") + 1), "base64").toString("utf8")
-    : await readFile(new URL(file.url), "utf8")
+    : await Bun.file(new URL(file.url)).text()
  return { text: `<file name="${file.filename}">\n${content}\n</file>` }
 }

@@ -1,3 +0,0 @@
-import "./plugin-runtime.promise"
-import "./plugin-runtime.effect"
-import "../index"
@@ -1,28 +0,0 @@
-import {
-  Agent,
-  Command,
-  Connection,
-  Credential,
-  Integration,
-  Model,
-  Plugin,
-  Provider,
-  Reference,
-  Skill,
-} from "@opencode-ai/plugin/v2/effect"
-import { Tool } from "@opencode-ai/plugin/v2/effect/tool"
-
-const key = Symbol.for("opencode.plugin.v2.effect")
-;(globalThis as typeof globalThis & { [key]?: unknown })[key] = {
-  Agent,
-  Command,
-  Connection,
-  Credential,
-  Integration,
-  Model,
-  Plugin,
-  Provider,
-  Reference,
-  Skill,
-  Tool,
-}
@@ -1,26 +0,0 @@
-import {
-  Agent,
-  Command,
-  Connection,
-  Credential,
-  Integration,
-  Model,
-  Plugin,
-  Provider,
-  Reference,
-  Skill,
-} from "@opencode-ai/plugin/v2"
-
-const key = Symbol.for("opencode.plugin.v2.promise")
-;(globalThis as typeof globalThis & { [key]?: unknown })[key] = {
-  Agent,
-  Command,
-  Connection,
-  Credential,
-  Integration,
-  Model,
-  Plugin,
-  Provider,
-  Reference,
-  Skill,
-}
@@ -1,34 +0,0 @@
-const platforms = ["darwin", "linux", "win32"] as const
-
-export type NodeTarget = ReturnType<typeof nodeTarget>
-
-export function nodeTarget(platform: string, arch: string) {
-  if (!platforms.includes(platform as (typeof platforms)[number]) || (arch !== "arm64" && arch !== "x64")) {
-    throw new Error(`Unsupported Node executable target: ${platform}-${arch}`)
-  }
-
-  const targetPlatform = platform as (typeof platforms)[number]
-  const targetArch = arch as "arm64" | "x64"
-  const nodePtyPackage = `@lydell/node-pty-${targetPlatform}-${targetArch}`
-  const parcelWatcherPackage = `@parcel/watcher-${targetPlatform}-${targetArch}${targetPlatform === "linux" ? "-glibc" : ""}`
-
-  return {
-    platform: targetPlatform,
-    arch: targetArch,
-    nodePtyPackage,
-    nodePtyEntryAsset: `${nodePtyPackage}/lib/index.js`,
-    parcelWatcherPackage,
-    parcelWatcherAsset: `${parcelWatcherPackage}/watcher.node`,
-  }
-}
-
-export const photonWasmAsset = "@silvia-odwyer/photon-node/photon_rs_bg.wasm"
-export const nodeExecArgv = ["--experimental-ffi", "--use-system-ca", "--disable-warning=ExperimentalWarning"] as const
-
-export const attentionSoundAssets = [
-  "@opencode-ai/ui/audio/bip-bop-01.mp3",
-  "@opencode-ai/ui/audio/bip-bop-03.mp3",
-  "@opencode-ai/ui/audio/staplebops-06.mp3",
-  "@opencode-ai/ui/audio/nope-03.mp3",
-  "@opencode-ai/ui/audio/yup-01.mp3",
-] as const
@@ -5,7 +5,6 @@ import { Service } from "@opencode-ai/client/effect/service"
 import { Effect, FileSystem, Option, Schema } from "effect"
 import { randomBytes } from "crypto"
 import path from "path"
-import { selfCommand } from "../util/process"

 // The CLI's service configuration file, plus the Service.EnsureOptions binding that
 // points the client package's service operations at this CLI: which
@@ -79,10 +78,13 @@ const paths = Effect.gen(function* () {
 export const options = Effect.fnUntraced(function* () {
  const { file, legacyFile } = yield* paths
  yield* migrateRegistration(legacyFile, file)
+  const compiled = path.basename(process.execPath).replace(/\.exe$/, "") !== "bun"
+  const entrypoint = compiled ? undefined : process.argv[1]
+  if (!compiled && entrypoint === undefined) return yield* Effect.fail(new Error("Failed to resolve CLI entrypoint"))
  return {
    file,
    version: InstallationVersion,
-    command: [...selfCommand(), "serve", "--service"],
+    command: [process.execPath, ...(entrypoint ? [entrypoint] : []), "serve", "--service"],
  }
 })

@@ -4,7 +4,7 @@ import { AppNodeBuilder } from "@opencode-ai/core/effect/app-node-builder"
 import { Effect, Schema, Stream } from "effect"
 import { ChildProcess, ChildProcessSpawner } from "effect/unstable/process"
 import { randomBytes } from "node:crypto"
-import { selfCommand } from "../util/process"
+import path from "node:path"

 const Ready = Schema.Struct({ url: Schema.String })
 const decodeReady = Schema.decodeUnknownPromise(Schema.fromJsonString(Ready))
@@ -14,7 +14,10 @@ type Options = {
 }

 function command(password: string, options: Options) {
-  const [executable, ...args] = options.command ?? [...selfCommand(), "serve"]
+  const compiled = path.basename(process.execPath).replace(/\.exe$/, "") !== "bun"
+  const entrypoint = compiled ? [] : process.argv[1] ? [process.argv[1]] : []
+  if (!compiled && entrypoint.length === 0) throw new Error("Failed to resolve CLI entrypoint")
+  const [executable, ...args] = options.command ?? [process.execPath, ...entrypoint, "serve"]
  if (!executable) throw new Error("Failed to resolve standalone server command")
  return ChildProcess.make(executable, [...args, "--stdio", "--port", "0"], {
    cwd: process.cwd(),
@@ -7,7 +7,6 @@ import { InstallationVersion } from "@opencode-ai/core/installation/version"
 import { registerOpencodeSpinner } from "@opencode-ai/tui/component/register-spinner"
 import { SPINNER_FRAMES } from "@opencode-ai/tui/component/spinner"
 import { go } from "@opencode-ai/tui/logo"
-import { setTimeout } from "node:timers/promises"
 import {
  batch,
  createEffect,
@@ -124,7 +123,7 @@ async function open(from?: string): Promise<Session> {
  let shownAt = performance.now()
  const waitForStage = async () => {
    const remaining = stageFloor - (performance.now() - shownAt)
-    if (remaining > 0) await setTimeout(remaining)
+    if (remaining > 0) await Bun.sleep(remaining)
  }
  const advance = async (stage: number) => {
    await waitForStage()
@@ -141,11 +140,11 @@ async function open(from?: string): Promise<Session> {
    setOutcome(next)
    const completed = await Promise.race([
      settled.promise.then(() => true),
-      setTimeout(transitionDuration + 500).then(() => false),
+      Bun.sleep(transitionDuration + 500).then(() => false),
    ])
    resolveOutcome = undefined
    setAnimating(false)
-    if (completed) await setTimeout(hold)
+    if (completed) await Bun.sleep(hold)
  }
  let closing: Promise<void> | undefined
  let transferred = false
@@ -155,7 +154,7 @@ async function open(from?: string): Promise<Session> {
      setAnimating(false)
      if (renderer.isDestroyed) return
      renderer.pause()
-      await Promise.race([renderer.idle(), setTimeout(500)])
+      await Promise.race([renderer.idle(), Bun.sleep(500)])
      renderer.destroy()
    })())
  let loading: Promise<void> | undefined
@@ -179,7 +178,7 @@ async function open(from?: string): Promise<Session> {
      renderer.screenMode = "alternate-screen"
      renderer.consoleMode = "console-overlay"
      renderer.requestRender()
-      await Promise.race([renderer.idle(), setTimeout(500)])
+      await Promise.race([renderer.idle(), Bun.sleep(500)])
      transferred = true
      return {
        renderer,
@@ -12,16 +12,11 @@ import { parse, type ParseError } from "jsonc-parser"
 import path from "node:path"
 import semver from "semver"

-declare const OPENCODE_CLI_NAME: string | undefined
-
 export type Policy = boolean | "notify"
 export type Action = "none" | "upgrade"
 type Method = "npm" | "pnpm" | "bun" | "yarn"

-const packageName =
-  typeof OPENCODE_CLI_NAME === "string" && OPENCODE_CLI_NAME === "opencode2-node"
-    ? OPENCODE_CLI_NAME
-    : "@opencode-ai/cli"
+const packageName = "@opencode-ai/cli"

 export interface Interface {
  readonly check: () => Effect.Effect<void>
@@ -1,5 +0,0 @@
-import { text } from "node:stream/consumers"
-
-export function readStdin() {
-  return text(process.stdin)
-}
@@ -1,26 +0,0 @@
-import path from "node:path"
-
-export function selfCommand() {
-  const runtime = path.basename(process.execPath, path.extname(process.execPath)).toLowerCase()
-  if (runtime !== "bun" && runtime !== "node" && runtime !== "nodejs") return [process.execPath]
-  if (!process.argv[1]) throw new Error("Failed to resolve CLI entrypoint")
-  if (runtime === "node" || runtime === "nodejs") return [process.execPath, ...nodeFlags(), process.argv[1]]
-  return [process.execPath, process.argv[1]]
-}
-
-function nodeFlags() {
-  return process.execArgv.flatMap((arg, index, args) => {
-    if (index > 0 && args[index - 1] === "--conditions") return []
-    if (arg === "--conditions") return args[index + 1] ? [arg, args[index + 1]] : []
-    if (arg.startsWith("--conditions=")) return [arg]
-    if (
-      arg === "--experimental-ffi" ||
-      arg === "--use-system-ca" ||
-      arg === "--enable-source-maps" ||
-      arg === "--no-addons"
-    )
-      return [arg]
-    if (arg === "--no-warnings" || arg.startsWith("--disable-warning=")) return [arg]
-    return []
-  })
-}
@@ -6,6 +6,5 @@
    "jsxImportSource": "@opentui/solid",
    "lib": ["ESNext", "DOM", "DOM.Iterable"],
    "noUncheckedIndexedAccess": false
-  },
-  "exclude": ["dist", "dist-node"]
+  }
 }
@@ -1,220 +0,0 @@
-import path from "node:path"
-import { readFile } from "node:fs/promises"
-import { createRequire } from "node:module"
-import { defineConfig, type Plugin, type UserConfig } from "vite"
-import solid from "vite-plugin-solid"
-import { nodeExecArgv, nodeTarget, type NodeTarget, photonWasmAsset } from "./src/node/target"
-
-const dir = import.meta.dirname
-
-function rawTextPlugin(): Plugin {
-  return {
-    name: "opencode:raw-text",
-    async load(id) {
-      if (!id.endsWith(".md")) return
-      return `export default ${JSON.stringify(await readFile(id, "utf8"))}`
-    },
-  }
-}
-
-function runtimeRequirePlugin(): Plugin {
-  return {
-    name: "opencode:runtime-require",
-    enforce: "pre",
-    transform(code, id) {
-      if (!id.endsWith("turndown/lib/turndown.es.js")) return
-      const transformed = code.replace("    var domino = require('@mixmark-io/domino');", "")
-      if (transformed === code) this.error("Failed to rewrite Turndown's Domino require")
-      return `import domino from "@mixmark-io/domino"\n${transformed}`
-    },
-  }
-}
-
-const resolve = {
-  alias: [
-    { find: /^solid-js\/store$/, replacement: "solid-js/store/dist/store.js" },
-    { find: /^solid-js$/, replacement: "solid-js/dist/solid.js" },
-    {
-      find: /^ws$/,
-      replacement: path.join(path.dirname(createRequire(import.meta.url).resolve("ws/package.json")), "wrapper.mjs"),
-    },
-  ],
-  conditions: ["node"],
-}
-
-const output = (entryFileNames: string, banner?: string) => ({
-  format: "esm" as const,
-  entryFileNames,
-  inlineDynamicImports: true,
-  banner,
-})
-
-function nodePrelude(input: NodeBuildInput) {
-  const nodePtySpawnHelper =
-    input.target.platform === "darwin"
-      ? `${input.target.nodePtyPackage}/prebuilds/darwin-${input.target.arch}/spawn-helper`
-      : undefined
-  const promiseModule = `const sdk = globalThis[Symbol.for("opencode.plugin.v2.promise")]
-if (!sdk) throw new Error("OpenCode Promise plugin SDK is unavailable")
-export const Agent = sdk.Agent
-export const Command = sdk.Command
-export const Connection = sdk.Connection
-export const Credential = sdk.Credential
-export const Integration = sdk.Integration
-export const Model = sdk.Model
-export const Plugin = sdk.Plugin
-export const Provider = sdk.Provider
-export const Reference = sdk.Reference
-export const Skill = sdk.Skill`
-  const effectModule = promiseModule
-    .replace("opencode.plugin.v2.promise", "opencode.plugin.v2.effect")
-    .replace("Promise plugin", "Effect plugin")
-  const promisePluginModule = `const sdk = globalThis[Symbol.for("opencode.plugin.v2.promise")]
-if (!sdk) throw new Error("OpenCode Promise plugin SDK is unavailable")
-export const define = sdk.Plugin.define`
-  const effectPluginModule = promisePluginModule
-    .replace("opencode.plugin.v2.promise", "opencode.plugin.v2.effect")
-    .replace("Promise plugin", "Effect plugin")
-  const effectToolModule = `const sdk = globalThis[Symbol.for("opencode.plugin.v2.effect")]
-if (!sdk) throw new Error("OpenCode Effect plugin SDK is unavailable")
-export const Tool = sdk.Tool
-export const Failure = sdk.Tool.Failure
-export const RegistrationError = sdk.Tool.RegistrationError
-export const make = sdk.Tool.make
-export const validateName = sdk.Tool.validateName
-export const registrationEntries = sdk.Tool.registrationEntries
-export const withPermission = sdk.Tool.withPermission
-export const permission = sdk.Tool.permission
-export const definition = sdk.Tool.definition
-export const settle = sdk.Tool.settle`
-  return `#!/usr/bin/env -S node ${nodeExecArgv.join(" ")}
-import __cjs_mod__ from "node:module"
-import { chmodSync as __ocChmod, existsSync as __ocExists, lstatSync as __ocLstat, mkdirSync as __ocMkdir, renameSync as __ocRename, rmSync as __ocRm, writeFileSync as __ocWrite } from "node:fs"
-import { tmpdir as __ocTmpdir } from "node:os"
-import __ocPath from "node:path"
-import { getAssetKeys as __ocAssetKeys, getRawAsset as __ocRawAsset, isSea as __ocIsSea } from "node:sea"
-import { fileURLToPath as __ocFileURLToPath } from "node:url"
-const __filename = import.meta.filename
-const __dirname = import.meta.dirname
-const require = __cjs_mod__.createRequire(import.meta.url)
-const __ocPluginModules = ${JSON.stringify({
-    "@opencode-ai/plugin/v2": "opencode:plugin-v2",
-    "@opencode-ai/plugin/v2/plugin": "opencode:plugin-v2-plugin",
-    "@opencode-ai/plugin/v2/effect": "opencode:plugin-v2-effect",
-    "@opencode-ai/plugin/v2/effect/plugin": "opencode:plugin-v2-effect-plugin",
-    "@opencode-ai/plugin/v2/effect/tool": "opencode:plugin-v2-effect-tool",
-  })}
-const __ocPluginSources = ${JSON.stringify({
-    "opencode:plugin-v2": promiseModule,
-    "opencode:plugin-v2-plugin": promisePluginModule,
-    "opencode:plugin-v2-effect": effectModule,
-    "opencode:plugin-v2-effect-plugin": effectPluginModule,
-    "opencode:plugin-v2-effect-tool": effectToolModule,
-  })}
-__cjs_mod__.registerHooks({
-  resolve(__ocSpecifier, __ocContext, __ocNextResolve) {
-    const __ocUrl = __ocPluginModules[__ocSpecifier]
-    return __ocUrl ? { url: __ocUrl, shortCircuit: true } : __ocNextResolve(__ocSpecifier, __ocContext)
-  },
-  load(__ocUrl, __ocContext, __ocNextLoad) {
-    const __ocSource = __ocPluginSources[__ocUrl]
-    return __ocSource
-      ? { format: "module", source: __ocSource, shortCircuit: true }
-      : __ocNextLoad(__ocUrl, __ocContext)
-  },
-})
-const __ocUid = typeof process.getuid === "function" ? process.getuid() : undefined
-const __ocCacheRoot = __ocPath.join(__ocTmpdir(), \`opencode-node-\${__ocUid ?? "user"}\`)
-if (__ocIsSea()) {
-  try {
-    __ocMkdir(__ocCacheRoot, { mode: 0o700 })
-  } catch (__ocError) {
-    if (!__ocExists(__ocCacheRoot)) throw __ocError
-  }
-  const __ocCacheInfo = __ocLstat(__ocCacheRoot)
-  if (!__ocCacheInfo.isDirectory() || __ocCacheInfo.isSymbolicLink()) throw new Error("Unsafe Node asset cache path")
-  if (__ocUid !== undefined && __ocCacheInfo.uid !== __ocUid) throw new Error("Node asset cache is owned by another user")
-  if (__ocUid !== undefined) __ocChmod(__ocCacheRoot, 0o700)
-}
-const __ocAssetRoot = __ocIsSea()
-  ? __ocPath.join(__ocCacheRoot, ${JSON.stringify(`${input.assetHash}-${input.target.platform}-${input.target.arch}`)})
-  : __ocFileURLToPath(new URL("./assets/", import.meta.url))
-if (__ocIsSea()) {
-  for (const __ocKey of __ocAssetKeys()) {
-    const __ocTarget = __ocPath.join(__ocAssetRoot, __ocKey)
-    if (__ocExists(__ocTarget)) continue
-    __ocMkdir(__ocPath.dirname(__ocTarget), { recursive: true })
-    const __ocTemporary = \`${"${__ocTarget}"}.${"${process.pid}"}.${"${crypto.randomUUID()}"}.tmp\`
-    __ocWrite(__ocTemporary, new Uint8Array(__ocRawAsset(__ocKey)))
-    try {
-      __ocRename(__ocTemporary, __ocTarget)
-    } catch (__ocError) {
-      __ocRm(__ocTemporary, { force: true })
-      if (!__ocExists(__ocTarget)) throw __ocError
-    }
-  }
-  const __ocPtySpawnHelper = ${JSON.stringify(nodePtySpawnHelper)}
-  if (__ocPtySpawnHelper) __ocChmod(__ocPath.join(__ocAssetRoot, __ocPtySpawnHelper), 0o755)
-}
-process.env.OPENCODE_NODE_ASSETS_DIR = __ocAssetRoot
-process.env.OTUI_ASSET_ROOT = __ocAssetRoot
-process.env.OPENCODE_NODE_PTY_PATH = __ocPath.join(__ocAssetRoot, ${JSON.stringify(input.target.nodePtyEntryAsset)})
-process.env.OPENCODE_PARCEL_WATCHER_PATH = __ocPath.join(__ocAssetRoot, ${JSON.stringify(input.target.parcelWatcherAsset)})
-process.env.OPENCODE_PHOTON_WASM_PATH = __ocPath.join(__ocAssetRoot, ${JSON.stringify(photonWasmAsset)})
-globalThis.__OPENCODE_PHOTON_WASM_PATH = process.env.OPENCODE_PHOTON_WASM_PATH
-if (process.platform === "linux") process.env.OPENTUI_LIBC = "glibc"`
-}
-
-export type NodeBuildInput = {
-  readonly version: string
-  readonly channel: string
-  readonly models: string
-  readonly assetHash: string
-  readonly target: NodeTarget
-}
-
-export function mainConfig(input: NodeBuildInput): UserConfig {
-  return defineConfig({
-    root: dir,
-    plugins: [
-      rawTextPlugin(),
-      runtimeRequirePlugin(),
-      solid({
-        solid: {
-          generate: "universal",
-          moduleName: "@opentui/solid",
-        },
-      }),
-    ],
-    resolve,
-    esbuild: { jsx: "automatic" },
-    define: {
-      OPENCODE_VERSION: JSON.stringify(input.version),
-      OPENCODE_CLI_NAME: JSON.stringify("opencode2-node"),
-      OPENCODE_MODELS_DEV: input.models,
-      OPENCODE_CHANNEL: JSON.stringify(input.channel),
-      OPENCODE_LIBC: input.target.platform === "linux" ? JSON.stringify("glibc") : "undefined",
-      FFF_LIBC: input.target.platform === "linux" ? JSON.stringify("gnu") : "undefined",
-    },
-    ssr: { noExternal: true },
-    build: {
-      ssr: "src/node/index.ts",
-      target: "node26",
-      outDir: "dist-node",
-      emptyOutDir: false,
-      minify: true,
-      rollupOptions: {
-        external: [/^@opencode-ai\/simulation(?:\/|$)/],
-        output: output("opencode.mjs", nodePrelude(input)),
-      },
-    },
-  })
-}
-
-export default mainConfig({
-  version: process.env.OPENCODE_VERSION ?? "local",
-  channel: process.env.OPENCODE_CHANNEL ?? "local",
-  models: "undefined",
-  assetHash: "local",
-  target: nodeTarget(process.platform, process.arch),
-})
@@ -4,10 +4,9 @@ This is the checkable support matrix for CodeMode's confined JavaScript interpre
 standard-library surface that programs can use today, plus concrete gaps that may be implemented later.

 - `[x]` means the feature is implemented at the scope described here.
- `[ ]` means the feature is unavailable, incomplete, or intentionally divergent as described.
- A checked item does not promise complete ECMAScript edge-case parity. Known differences are listed next to the
-  supported surface or under [Known semantic gaps](#known-semantic-gaps).
- [Intentional exclusions](#intentional-exclusions) are boundaries, not backlog.
+- `[ ]` means a concrete compatibility gap remains.
+- Checked items do not promise complete ECMAScript edge-case parity; known differences are stated explicitly.
+- Intentional boundaries are not listed as compatibility work.

 When behavior changes, update this file and the tests in the same change. The implementation and tests remain the
 ultimate source of truth.
@@ -19,42 +18,45 @@ ultimate source of truth.
      TypeScript is transpiled first; the emitted JavaScript must still use the supported subset.
 - [x] Top-level `await` and `return` through the program's implicit async-function scope.
 - [x] Explicit `return`, final top-level expression as a REPL-style result, and `null` when no value is produced.
- [x] JSON-like host boundaries with `undefined` and non-finite numbers normalized to `null`.
+- [x] Program results use JSON-like boundaries, with `undefined` and non-finite numbers normalized to `null`. Tool
+      arguments remain subject to their schema and the outbound-handling gap listed below.
 - [x] Live Date, RegExp, Map, Set, URL, and URLSearchParams values inside CodeMode.
 - [x] Tool calls through the host-provided `tools` tree only.
 - [x] The global `search(...)` built-in: synchronous tool discovery that counts as an admitted tool call and is
      shadowable by program declarations like other globals.
 - [x] Cooperative timeout, an optional total tool-call limit, output bounding, and unrestricted tool-call concurrency.
- [ ] Full JavaScript or TypeScript compatibility. CodeMode is a bounded orchestration language.

 ## Values and literals

 - [x] `null`, `undefined`, booleans, finite and non-finite numbers, and strings.
 - [x] Array literals, including holes and spread from arrays, strings, Maps, Sets, and URLSearchParams.
- [x] Object literals with shorthand, computed string/number keys, and object spread.
+- [x] Object literals with shorthand, computed string/number keys, and spread from plain data objects; `null` and
+      `undefined` are no-ops, while arrays are rejected.
 - [x] Template literals with interpolation.
 - [x] Regular-expression literals.
 - [x] `NaN` and `Infinity` globals.
- [ ] BigInt literals and values.
- [ ] Symbols.
- [ ] Tagged template literals.
- [ ] Getters and setters in object literals.
+- [ ] BigInt literals and in-interpreter BigInt arithmetic; BigInt remains invalid at JSON-like host boundaries.
+- [ ] Symbol primitive values and symbol-keyed properties.
+- [ ] Tagged-template calls.
+- [ ] Getter and setter definitions in object literals.

 ## Bindings and destructuring

 - [x] `const`, `let`, and accepted `var` declarations.
 - [x] Object and array destructuring in declarations, parameters, assignment expressions, and `for...of` bindings.
 - [x] Nested patterns, defaults, elisions, and rest elements.
- [x] Assignment to identifiers, object fields, array indexes, and writable URL fields.
- [x] Function declarations are hoisted within their interpreted scope.
+- [x] Assignment to identifiers, unblocked plain-object fields, non-negative integer array indexes, and writable URL
+      fields.
+- [x] Direct function declarations are hoisted in program and block statement lists.
 - [x] Parameter defaults observe a temporal dead zone for later parameters.
- [ ] JavaScript-correct `var` function scope, hoisting, and redeclaration. Accepted `var` currently behaves like a
-      lexical declaration; prefer `let` or `const`.
- [ ] Complete `let`/`const` temporal-dead-zone and declaration-hoisting semantics.
- [ ] Computed object destructuring keys such as `const { [field]: value } = record`.
- [ ] Object destructuring from arrays, such as `const { length } = values`.
- [ ] Iterable array destructuring from Map, Set, string, or URLSearchParams values.
- [ ] Dynamic property deletion with `delete object[key]`.
+- [ ] JavaScript-correct function scoping, hoisting, and redeclaration for accepted `var` declarations.
+- [ ] Predeclare `let` and `const` bindings in every lexical scope, including program/block bodies, switch bodies, and
+      loop headers, so reads before initialization and self- or cross-referential initializers observe the JavaScript
+      temporal dead zone.
+- [ ] Hoist function declarations accepted directly in switch cases.
+- [x] Computed object destructuring keys such as `const { [field]: value } = record`.
+- [x] Object destructuring from arrays, such as `const { length } = values`.
+- [x] Array destructuring from supported non-array iterables: strings, Maps, Sets, and URLSearchParams.

 ## Statements and control flow

@@ -69,7 +71,6 @@ ultimate source of truth.
 - [x] `throw` with arbitrary values.
 - [ ] Labeled statements, labeled `break`, and labeled `continue`.
 - [ ] `for await...of` and async iteration.
- [ ] `with` and `debugger` statements.

 ## Functions and callbacks

@@ -90,15 +91,15 @@ ultimate source of truth.
      like JS.
 - [x] Tool references and detached `Promise` statics are rejected as callbacks with a hint to wrap them in an
      arrow function.
- [x] Async string replacement callbacks; replacements are evaluated sequentially.
+- [ ] Stop automatically awaiting promise-returning string replacers; match JavaScript's synchronous callback-result
+      coercion.
 - [x] The optional `thisArg` of iteration methods is accepted and ignored: CodeMode functions have no `this`, so
      ignoring it matches JS arrow-function semantics exactly.
- [ ] `this`, `super`, user-defined constructor functions, or function prototype methods such as `call`, `apply`,
-      and `bind`.
+- [ ] `this` in non-arrow CodeMode functions and callbacks.
+- [ ] User-defined constructor calls.
+- [ ] `Function.prototype.call`, `apply`, and `bind` for CodeMode functions.
 - [ ] Classes and private fields.
 - [ ] Generator functions and `yield`.
- [ ] Async predicates, reducers, and comparators with automatic awaiting. Async mapping can be joined explicitly with
-      `Promise.all`, but a promise is not a meaningful predicate or sort result.

 ## Expressions and operators

@@ -108,16 +109,16 @@ ultimate source of truth.
 - [x] Sequence expressions (the comma operator).
 - [x] `await` for CodeMode promises; a plain value passes through unchanged, though every `await` still defers its
      continuation one reaction turn.
- [x] `new` for Error types, Date, RegExp, Map, Set, URL, URLSearchParams, and Promise.
+- [x] `new` for Array, Object, Error types, Date, RegExp, Map, Set, URL, URLSearchParams, and Promise.
 - [x] Arithmetic operators: `+`, `-`, `*`, `/`, `%`, and `**`.
 - [x] Equality and ordering: `==`, `!=`, `===`, `!==`, `<`, `<=`, `>`, and `>=`.
 - [x] Bitwise operators: `&`, `|`, `^`, `~`, `<<`, `>>`, and `>>>`.
 - [x] Logical operators: `&&`, `||`, `??`, and `!`, with short-circuiting.
- [x] Unary `+`, unary `-`, `typeof`, `instanceof`, and own-property-only `in`.
+- [x] Unary `+`, unary `-`, `void`, `typeof`, `instanceof`, and own-property-only `in`.
 - [x] Prefix and postfix `++` and `--`.
 - [x] Plain, arithmetic, bitwise, and logical assignment operators.
- [ ] Unary `void` and `delete`.
- [ ] Arbitrary constructors.
+- [x] Property deletion on plain data objects and arrays, including computed and optional forms; deleting an array index
+      creates a hole without changing its length.

 ## Promises and tools

@@ -152,8 +153,13 @@ ultimate source of truth.
      promise itself rejects with a `TypeError`. Resolver callables work anywhere callbacks are accepted, including
      `.then`/`.catch` handlers and collection callbacks, but remain opaque references that cannot cross the data
      boundary.
- [ ] Thenable assimilation (objects with a `then` method are plain data, not promises).
- [ ] Async iterables, host streams, and stream consumption.
+- [ ] Thenable assimilation; objects with a callable `then` field remain plain data.
+- [x] Dotted tool names are canonicalized into namespace paths; a path can be both callable and a namespace, and the
+      last definition supplied for a canonical path wins.
+- [x] Tool path segments may be named `constructor`, `prototype`, or `__proto__` because paths use inert Map keys.
+- [ ] Reject `undefined` and non-finite numbers in outbound tool arguments before render-only and OpenAPI tools run;
+      retain null normalization for program results and JSON serialization.
+- [ ] Tokenize and case-fold non-ASCII tool paths, descriptions, and queries for tool search.

 ## Objects and properties

@@ -164,19 +170,17 @@ ultimate source of truth.
 - [x] `Object.keys`, `Object.values`, `Object.entries`, `Object.hasOwn`, `Object.assign`, and `Object.fromEntries`.
 - [x] `Object.keys` over arrays and tool references.
 - [x] Object identity is preserved by in-CodeMode Object helpers.
- [x] Blocked access to `__proto__`, `constructor`, and `prototype`.
- [ ] `Object.is`; runtime and tool-reference identity semantics need to be defined first.
+- [x] Prototype traversal and mutation through `__proto__`, `constructor`, and `prototype` are blocked.
+- [ ] Legal own data fields named `__proto__`, `constructor`, or `prototype` are rejected at JSON/tool boundaries and
+      cannot be created, read, or written in CodeMode; tool path segments with those names remain supported.
+- [x] `Object.is` for supported data values.
 - [ ] `Object.groupBy`.
- [ ] Object creation, descriptors, freezing/sealing, prototype APIs, and reflection APIs.
- [ ] A final policy for legal data keys named `__proto__`, `constructor`, or `prototype` (tool path segments
-      already allow them; see known semantic gaps).

 ## Arrays

- [x] The `Array` constructor with or without `new`: `Array(a, b)` collects arguments, `Array(n)` creates a
-      sparse array of that length (invalid lengths throw a `RangeError`). Holes behave like JS in iteration,
-      spread, join, and JSON; `sort` densifies holes into trailing `undefined`, and results returned to the
-      host normalize holes to `null`.
+- [x] The `Array` constructor with or without `new`: `Array(a, b)` collects arguments and `Array(n)` creates a sparse
+      array of that length; invalid lengths throw `RangeError`. Iteration, spread, join, and JSON handle holes like
+      JavaScript, and host results normalize holes to `null`.
 - [x] Static methods: `Array.isArray`, `Array.of`, and `Array.from`, including the `Array.from` mapper form with
      `(value, index)` arguments.
 - [x] Iteration/transformation: `map`, `filter`, `flatMap`, and `forEach`.
@@ -190,8 +194,10 @@ ultimate source of truth.
 - [x] `length`, numeric indexing, index assignment, spread, and `for...of`.
 - [x] The `thisArg` argument of `Array.from` is accepted and ignored, like JS arrows.
 - [ ] `Array.prototype.toSpliced`.
- [ ] Canonical index handling: a key such as `"01"` must not alias index `1`.
- [ ] Complete sparse-array parity. Promise combinators do consume holes as `undefined` members, as in JS.
+- [ ] Canonical array/string index parsing: a key such as `"01"` must remain an ordinary property key rather than
+      aliasing index `1`.
+- [ ] `Array.prototype.sort` and `toSorted` must preserve trailing holes; they currently turn holes into own
+      `undefined` elements.

 ## Strings

@@ -204,8 +210,8 @@ ultimate source of truth.
 - [x] `localeCompare`; locale and options arguments are currently ignored.
 - [x] `toString`, `length`, numeric indexing, spread, and `for...of` by Unicode code point.
 - [x] Static `String.fromCharCode` and `String.fromCodePoint`.
- [ ] Locale/options-aware `localeCompare` and locale formatting APIs.
- [ ] Exact native coercion across every string method; CodeMode often requires explicit strings/numbers.
+- [ ] Native argument coercion for supported String methods; for example, `includes(1)` and `slice("1")` currently
+      reject instead of coercing.
 - [ ] Native no-argument parity for `match()` and `search()`.

 ## Numbers and Math
@@ -221,20 +227,21 @@ ultimate source of truth.
      `floor`, `ceil`, `round`, `trunc`, `sign`, `sqrt`, `cbrt`, `pow`, `hypot`, `cos`, `cosh`, `sin`, `sinh`,
      `tan`, `tanh`, `log`, `log2`, `log10`, `log1p`, `exp`, `expm1`, `f16round`, `fround`, `clz32`, and `imul`.
 - [ ] Native zero-argument behavior for `Number()` and `String()`; they currently do not produce `0` and `""`.
- [ ] Safe interpreter coercion for `++` and `--` rather than host `Number(...)` coercion.
- [ ] Reliable feature detection for unknown static members.
+- [ ] `++` and `--` must use CodeMode numeric coercion and reject opaque runtime references; they currently call host
+      `Number(...)` directly.
+- [ ] Unknown static members must read as `undefined` for feature detection; some currently appear callable or throw
+      during property access.
 - [ ] `Math.sumPrecise`.
 - [ ] Global coercing `isFinite` and `isNaN`.

 ## JSON and console

- [x] `JSON.parse` and `JSON.stringify`.
+- [x] `JSON.parse` and `JSON.stringify` for supported data objects; the blocked data-key gap listed above still applies.
 - [x] Numeric/string indentation for `JSON.stringify`.
 - [x] Captured `console.log`, `console.info`, `console.debug`, `console.warn`, and `console.error`.
 - [x] Captured `console.dir` and `console.table`.
 - [ ] `JSON.parse` reviver callbacks.
 - [ ] `JSON.stringify` function/array replacers.
- [ ] Other console methods, timers, counters, groups, and host console access.

 ## Date

@@ -250,22 +257,22 @@ ultimate source of truth.
 - [x] `getTimezoneOffset`, arithmetic, relational comparison, and `instanceof Date`.
 - [x] Date values serialize to ISO strings; invalid dates serialize to `null`.
 - [ ] Date setters.
- [ ] `toUTCString`, locale methods, and other Date formatting methods.
- [ ] Exact native constructor coercion, local-time, and loose-equality semantics.
+- [ ] `Date.prototype.toUTCString` and its `toGMTString` alias.
+- [ ] Native one-argument Date coercion; unsupported boolean/object inputs currently become invalid dates instead of
+      being coerced.
+- [ ] Native Date loose-equality and default primitive-coercion semantics.
 - [ ] Native `RangeError` branding for invalid `toISOString()` calls.
- [ ] Temporal and Intl date/time APIs.

 ## Regular expressions

 - [x] Literal and `RegExp(pattern, flags)` construction, with or without `new`.
 - [x] `test`, `exec`, and `toString`.
 - [x] Readable `source`, `flags`, `lastIndex`, `global`, `ignoreCase`, `multiline`, `sticky`, `unicode`, and `dotAll`.
- [x] Captures, named groups, match indexes, and stateful global matching.
- [x] Integration with supported String methods, including async function replacers.
+- [x] Captures, safe named groups (blocked member names are omitted), match `.index`, and stateful global matching.
+- [x] Integration with supported String methods, including function replacers.
 - [ ] Writable `lastIndex`.
- [ ] Exposed metadata for the `d` and `v` flags.
+- [ ] `hasIndices`, match `indices`, and `unicodeSets` metadata for the `d` and `v` flags.
 - [ ] `RegExp.escape`.
- [ ] Protection from pathological host-regex backtracking beyond the cooperative execution timeout.

 ## Map and Set

@@ -276,9 +283,8 @@ ultimate source of truth.
 - [x] Materialized `keys`, `values`, and `entries` arrays for Map and Set.
 - [x] Spread, `for...of`, `Array.from`, and `Object.fromEntries` integration.
 - [x] Map and Set values serialize to `{}` at host/JSON boundaries.
- [ ] Set composition methods such as `union`, `intersection`, `difference`, and relation predicates.
- [ ] WeakMap and WeakSet.
- [ ] Native iterator objects and custom iterators.
+- [ ] Set composition and relation methods: `union`, `intersection`, `difference`, `symmetricDifference`, `isSubsetOf`,
+      `isSupersetOf`, and `isDisjointFrom`.

 ## URL and URI helpers

@@ -301,48 +307,12 @@ ultimate source of truth.
      an all-rejected `Promise.any`.
 - [x] Error `name`/`message`, error inheritance through `instanceof`, and plain-data serialization.
 - [x] `instanceof` for Date, RegExp, Map, Set, URL, URLSearchParams, Array, Object, Promise, and Error types.
- [x] Catchable interpreter failures and awaited tool failures.
- [x] Source locations on unsupported-syntax diagnostics when available.
+- [x] Catchable user throws, runtime failures raised during interpreted evaluation, awaited tool failures, and awaited
+      tool-call-limit failures; parse/compile failures, cooperative timeout, and output bounding remain outside program
+      `catch`.
+- [x] Source locations on unsupported-syntax diagnostics for JavaScript-shaped input; TypeScript transpilation may
+      shift them.
 - [x] Sanitized model-visible diagnostics and explicit safe `ToolError` messages.
- [ ] Distinct public categories for user throws, tool refusal, tool internal failure, invalid returned data, compile
-      failures, and genuine interpreter defects.
- [ ] Preservation of detailed recoverable failure categories inside `catch` and `Promise.allSettled`.
-
-## Known semantic gaps
-
-These are actionable implementation items. Check them off only when behavior and direct tests land.
-
- [x] Return real promises from `Promise.all`, `Promise.allSettled`, and `Promise.race`.
- [x] Canonicalize dotted tool names into namespace paths so every advertised dotted path is executable, one
-      canonical path can be both a callable tool and a namespace, and the last definition supplied for a canonical
-      path wins.
- [x] Allow blocked member names (`constructor`, `prototype`, `__proto__`) as tool path segments: segments are Map
-      keys and inert strings, never plain-object property accesses, so every advertised path is executable. Blocked
-      member access on data values stays rejected. Tool names with empty segments are rejected at construction.
- [ ] Define safe outbound handling for non-finite numbers and `undefined` so invalid values cannot silently become
-      `null` in render-only or OpenAPI tool calls.
- [ ] Make regular-expression execution genuinely timeout-safe, or narrow the timeout guarantee explicitly.
- [ ] Complete lexical declaration and destructuring semantics listed above.
- [x] Make callback acceptance consistent across built-ins: collections, sort, string replacers, `Array.from`
-      mappers, and promise reactions share one acceptance rule.
- [x] Reject every unsupported callable callback argument explicitly rather than silently ignoring it
-      (`JSON.stringify` replacers and `JSON.parse` revivers fail loudly). The iteration-method `thisArg` is
-      accepted and ignored: CodeMode functions have no `this`, so ignoring it matches JS arrow semantics.
- [ ] Make async callback behavior consistent across built-ins; only string replacers settle async callback results
-      today.
- [ ] Resolve the built-in correctness gaps listed in the Array, String, Number, Date, and RegExp sections.
- [ ] Make tool search tokenization Unicode-aware.
- [ ] Design explicit tagged representations and size limits before adding binary values or streams.
-
-## Intentional exclusions
-
-These constraints preserve CodeMode's confinement and host-neutral scope. They are not TODO items.
-
- Ambient filesystem, process, environment, credential, network, or application access.
- `fetch`, timers, crypto, or other host globals unless a future host explicitly supplies a bounded capability.
- Static imports, dynamic imports, modules, npm packages, and module loading.
- `eval`, `Function(...)`, arbitrary host execution, and prototype mutation.
- Generic permission prompts, authorization policy, persistence, replay, or exactly-once side effects.
- Arbitrary method dispatch outside the documented allowlists.
- Automatic parsing of text tool results as JSON.
- Full browser, Node.js, Bun, or ECMAScript runtime compatibility.
+- [ ] Distinguish user-thrown failures from interpreter defects and explicit tool refusals from sanitized internal tool
+      failures; preserve those categories in caught errors, promise rejection handlers, and `Promise.allSettled`
+      reasons.
@@ -777,9 +777,9 @@ export class Interpreter<R> {
      }

      if (pattern.type === "ObjectPattern") {
-        if (value === null || typeof value !== "object" || Array.isArray(value) || isRuntimeReference(value)) {
+        if (value === null || typeof value !== "object" || isRuntimeReference(value)) {
          throw new InterpreterRuntimeError(
-            "Object destructuring requires a data object value.",
+            "Object destructuring requires a data object or array value.",
            pattern,
            "InvalidDataValue",
          )
@@ -798,38 +798,35 @@ export class Interpreter<R> {
            continue
          }

-          if (
-            property.type !== "Property" ||
-            getBoolean(property, "computed") ||
-            getString(property, "kind") !== "init"
-          ) {
-            throw new InterpreterRuntimeError("Only named object destructuring properties are supported.", property)
+          const key = yield* self.destructuringPropertyKey(property)
+          if (isBlockedMember(String(key))) {
+            throw new InterpreterRuntimeError(`Property '${String(key)}' is not available in CodeMode.`, property)
          }
-
-          const keyNode = getNode(property, "key")
-          const key = keyNode.type === "Identifier" ? getString(keyNode, "name") : String(keyNode.value)
-          if (isBlockedMember(key)) {
-            throw new InterpreterRuntimeError(`Property '${key}' is not available in CodeMode.`, keyNode)
-          }
-          consumed.add(key)
-          yield* self.declarePattern(getNode(property, "value"), (value as SafeObject)[key], mutable, property)
+          consumed.add(String(key))
+          yield* self.declarePattern(
+            getNode(property, "value"),
+            self.destructuringPropertyValue(value as SafeObject | Array<unknown>, key),
+            mutable,
+            property,
+          )
        }
        return
      }

      if (pattern.type === "ArrayPattern") {
-        if (!Array.isArray(value)) {
-          throw new InterpreterRuntimeError("Array destructuring requires an array value.", pattern)
+        const items = spreadItems(value)
+        if (items === undefined) {
+          throw new InterpreterRuntimeError("Array destructuring requires a supported iterable value.", pattern)
        }

        for (const [index, item] of getArray(pattern, "elements").entries()) {
          if (item === null) continue
          const element = asNode(item, `elements[${index}]`)
          if (element.type === "RestElement") {
-            yield* self.declarePattern(getNode(element, "argument"), value.slice(index), mutable, element)
+            yield* self.declarePattern(getNode(element, "argument"), items.slice(index), mutable, element)
            break
          }
-          yield* self.declarePattern(element, value[index], mutable, pattern)
+          yield* self.declarePattern(element, items[index], mutable, pattern)
        }
        return
      }
@@ -858,15 +855,15 @@ export class Interpreter<R> {
      }

      if (pattern.type === "ObjectPattern") {
-        if (value === null || typeof value !== "object" || Array.isArray(value) || isRuntimeReference(value)) {
+        if (value === null || typeof value !== "object" || isRuntimeReference(value)) {
          throw new InterpreterRuntimeError(
-            "Object destructuring requires a data object value.",
+            "Object destructuring requires a data object or array value.",
            pattern,
            "InvalidDataValue",
          )
        }

-        const source = value as SafeObject
+        const source = value as SafeObject | Array<unknown>
        const consumed = new Set<string>()
        for (const propertyValue of getArray(pattern, "properties")) {
          const property = asNode(propertyValue, "properties")
@@ -878,36 +875,29 @@ export class Interpreter<R> {
            yield* self.assignPattern(getNode(property, "argument"), rest, property)
            continue
          }
-          if (
-            property.type !== "Property" ||
-            getBoolean(property, "computed") ||
-            getString(property, "kind") !== "init"
-          ) {
-            throw new InterpreterRuntimeError("Only named object destructuring properties are supported.", property)
+          const key = yield* self.destructuringPropertyKey(property)
+          if (isBlockedMember(String(key))) {
+            throw new InterpreterRuntimeError(`Property '${String(key)}' is not available in CodeMode.`, property)
          }
-          const keyNode = getNode(property, "key")
-          const key = keyNode.type === "Identifier" ? getString(keyNode, "name") : String(keyNode.value)
-          if (isBlockedMember(key)) {
-            throw new InterpreterRuntimeError(`Property '${key}' is not available in CodeMode.`, keyNode)
-          }
-          consumed.add(key)
-          yield* self.assignPattern(getNode(property, "value"), source[key], property)
+          consumed.add(String(key))
+          yield* self.assignPattern(getNode(property, "value"), self.destructuringPropertyValue(source, key), property)
        }
        return
      }

      if (pattern.type === "ArrayPattern") {
-        if (!Array.isArray(value)) {
-          throw new InterpreterRuntimeError("Array destructuring requires an array value.", pattern)
+        const items = spreadItems(value)
+        if (items === undefined) {
+          throw new InterpreterRuntimeError("Array destructuring requires a supported iterable value.", pattern)
        }
        for (const [index, item] of getArray(pattern, "elements").entries()) {
          if (item === null) continue
          const element = asNode(item, `elements[${index}]`)
          if (element.type === "RestElement") {
-            yield* self.assignPattern(getNode(element, "argument"), value.slice(index), element)
+            yield* self.assignPattern(getNode(element, "argument"), items.slice(index), element)
            break
          }
-          yield* self.assignPattern(element, value[index], pattern)
+          yield* self.assignPattern(element, items[index], pattern)
        }
        return
      }
@@ -916,6 +906,26 @@ export class Interpreter<R> {
    })
  }

+  private destructuringPropertyKey(property: AstNode): Effect.Effect<string | number, unknown, R> {
+    if (property.type !== "Property" || getString(property, "kind") !== "init") {
+      throw new InterpreterRuntimeError("Unsupported object destructuring property.", property)
+    }
+    const keyNode = getNode(property, "key")
+    if (getBoolean(property, "computed")) {
+      return Effect.map(this.evaluateExpression(keyNode), (value) => this.toPropertyKey(value, keyNode))
+    }
+    return Effect.succeed(keyNode.type === "Identifier" ? getString(keyNode, "name") : String(keyNode.value))
+  }
+
+  private destructuringPropertyValue(source: SafeObject | Array<unknown>, key: string | number): unknown {
+    if (!Array.isArray(source)) return source[String(key)]
+    if (key === "length") return source.length
+    if (typeof key === "number") return source[key]
+    if (Object.hasOwn(source, key)) return (source as Record<string, unknown> & Array<unknown>)[key]
+    if (arrayMethods.has(key)) return new IntrinsicReference(source, key)
+    return undefined
+  }
+
  private evaluateExpression(node: AstNode): Effect.Effect<unknown, unknown, R> {
    switch (node.type) {
      case "Literal": {
@@ -1279,6 +1289,7 @@ export class Interpreter<R> {
  private evaluateUnaryExpression(node: AstNode): Effect.Effect<unknown, unknown, R> {
    const operator = getString(node, "operator")
    const argument = getNode(node, "argument")
+    if (operator === "delete") return this.evaluateDeleteExpression(argument)
    // Undeclared names short-circuit, but declared TDZ bindings must still throw.
    if (operator === "typeof" && argument.type === "Identifier" && !this.scopes.resolve(getString(argument, "name"))) {
      return Effect.succeed("undefined")
@@ -1286,6 +1297,7 @@ export class Interpreter<R> {
    return Effect.map(this.evaluateExpression(argument), (value) => {
      if (operator === "typeof") return typeofValue(value)
      if (operator === "!") return !value
+      if (operator === "void") return undefined
      if (containsOpaqueReference(value)) {
        throw new InterpreterRuntimeError("Unary operators require data values in CodeMode.", node, "InvalidDataValue")
      }
@@ -1729,6 +1741,7 @@ export class Interpreter<R> {

  private getMemberReference(
    node: AstNode,
+    operation: "read" | "delete" = "read",
  ): Effect.Effect<
    | MemberReference
    | ToolReference
@@ -1875,6 +1888,7 @@ export class Interpreter<R> {
      }

      if (Array.isArray(objectValue)) {
+        if (operation === "delete") return { target: objectValue, key }
        if (
          key !== "length" &&
          !(typeof key === "string" && arrayMethods.has(key)) &&
@@ -1923,6 +1937,29 @@ export class Interpreter<R> {
    return this.modifyMember(node, () => Effect.succeed({ write: true, next: value, result: value }))
  }

+  private evaluateDeleteExpression(argument: AstNode): Effect.Effect<boolean, unknown, R> {
+    const target = argument.type === "ChainExpression" ? getNode(argument, "expression") : argument
+    if (target.type !== "MemberExpression") {
+      throw new InterpreterRuntimeError("Only data fields may be deleted in CodeMode.", argument)
+    }
+    return Effect.map(this.getMemberReference(target, "delete"), (reference) => {
+      if (reference === OptionalShortCircuit) return true
+      if (
+        reference instanceof ComputedValue ||
+        reference === undefined ||
+        reference instanceof ToolReference ||
+        reference instanceof PromiseMethodReference ||
+        reference instanceof PromiseInstanceMethodReference ||
+        reference instanceof IntrinsicReference ||
+        reference instanceof GlobalMethodReference ||
+        reference.target instanceof CodeModeURL
+      ) {
+        throw new InterpreterRuntimeError("Only data fields may be deleted in CodeMode.", target, "InvalidDataValue")
+      }
+      return Reflect.deleteProperty(reference.target, reference.key)
+    })
+  }
+
  // Resolve side-effecting object and key expressions exactly once.
  private modifyMember(
    node: AstNode,
@@ -1,4 +1,5 @@
 import { type AstNode, InterpreterRuntimeError } from "../interpreter/model.js"
+import { containsOpaqueReference } from "../interpreter/references.js"
 import { isBlockedMember } from "../tool-runtime.js"
 import { isCodeModeValue, CodeModeMap, CodeModePromise, CodeModeSet, CodeModeURLSearchParams } from "../values.js"
 import { boundedData, coerceToString } from "./value.js"
@@ -44,6 +45,11 @@ export const invokeObjectMethod = (name: string, args: Array<unknown>, node: Ast
      return Object.entries(requireObject()).map(([key, item]) => [key, item])
    case "hasOwn":
      return Object.hasOwn(requireObject(), String(args[1]))
+    case "is":
+      if (containsOpaqueReference(args[0]) || containsOpaqueReference(args[1])) {
+        throw new InterpreterRuntimeError("Object.is requires data values in CodeMode.", node, "InvalidDataValue")
+      }
+      return Object.is(args[0], args[1])
    case "assign": {
      const target = args[0]
      if (target === null || typeof target !== "object" || Array.isArray(target) || isCodeModeValue(target)) {
@@ -99,6 +99,84 @@ describe("H4: typeof on an undeclared identifier is 'undefined'", () => {
  })
 })

+describe("unary void", () => {
+  test("evaluates its operand and returns undefined", async () => {
+    expect(await value(`let count = 0; const result = void (count += 1); return [count, result === undefined]`)).toEqual([
+      1,
+      true,
+    ])
+  })
+
+  test("discards opaque values", async () => {
+    expect(await value(`return void tools === undefined`)).toBe(true)
+  })
+})
+
+describe("property deletion", () => {
+  test("deletes plain object fields and reports missing fields as successful", async () => {
+    expect(
+      await value(`
+        const object = { keep: 1, remove: 2 }
+        return [delete object.remove, delete object.missing, object]
+      `),
+    ).toEqual([true, true, { keep: 1 }])
+  })
+
+  test("evaluates computed object and key expressions once", async () => {
+    expect(
+      await value(`
+        const object = { remove: true }
+        let objectReads = 0
+        let keyReads = 0
+        function getObject() { objectReads++; return object }
+        function getKey() { keyReads++; return "remove" }
+        const removed = delete getObject()[getKey()]
+        return [removed, objectReads, keyReads, Object.hasOwn(object, "remove")]
+      `),
+    ).toEqual([true, 1, 1, false])
+  })
+
+  test("deleting an array index creates a hole without changing its length", async () => {
+    expect(await value(`const values = [1, 2, 3]; const removed = delete values[1]; return [removed, values.length, 1 in values, values]`)).toEqual([
+      true,
+      3,
+      false,
+      [1, null, 3],
+    ])
+  })
+
+  test("array length is not configurable", async () => {
+    expect(await value(`const values = [1, 2]; return [delete values.length, values.length]`)).toEqual([false, 2])
+  })
+
+  test("does not broaden unsupported array property assignment", async () => {
+    expect(
+      await value(`
+        const values = []
+        let rightHandSideRuns = 0
+        function next() { rightHandSideRuns++; return 1 }
+        try { values.field = next() } catch {}
+        return rightHandSideRuns
+      `),
+    ).toBe(0)
+  })
+
+  test("optional deletion short-circuits without evaluating the key", async () => {
+    expect(
+      await value(`let keyReads = 0; const object = null; return [delete object?.[keyReads++], keyReads]`),
+    ).toEqual([true, 0])
+  })
+
+  test("rejects deletion from opaque runtime references", async () => {
+    expect((await error(`return delete tools.example`)).kind).toBe("InvalidDataValue")
+  })
+
+  test("keeps blocked property names unavailable", async () => {
+    expect((await error(`const object = {}; return delete object.__proto__`)).kind).toBe("ExecutionFailure")
+    expect((await error(`const values = []; return delete values["constructor"]`)).kind).toBe("ExecutionFailure")
+  })
+})
+
 describe("H1: NaN/Infinity flow as intermediates and normalize to null at the boundary", () => {
  test("guards run instead of the program crashing on a transient NaN", async () => {
    expect(await value(`return parseInt("abc") || 0`)).toBe(0)
@@ -470,4 +548,71 @@ describe("destructuring assignment", () => {
  test("returns the assigned value", async () => {
    expect(await value(`let a = 0; const result = ([a] = [7]); return [a, result]`)).toEqual([7, [7]])
  })
+
+  test("supports computed object keys and evaluates them once", async () => {
+    expect(
+      await value(`
+        let calls = 0
+        const field = () => { calls++; return "name" }
+        const { [field()]: name, ...rest } = { name: "Ada", role: "engineer" }
+        return { calls, name, rest }
+      `),
+    ).toEqual({ calls: 1, name: "Ada", rest: { role: "engineer" } })
+  })
+
+  test("supports object patterns over arrays", async () => {
+    expect(
+      await value(`
+        const { 0: first, length, slice, ...rest } = ["a", "b", "c"]
+        return { first, length, sliced: slice(1), rest }
+      `),
+    ).toEqual({ first: "a", length: 3, sliced: ["b", "c"], rest: { 1: "b", 2: "c" } })
+  })
+
+  test("preserves exact computed property names on arrays", async () => {
+    expect(
+      await value(`
+        const { ["01"]: item, ...rest } = [10, 20]
+        return { missing: item === undefined, rest }
+      `),
+    ).toEqual({ missing: true, rest: { 0: 10, 1: 20 } })
+  })
+
+  test("supports array patterns over strings, Maps, Sets, and URLSearchParams", async () => {
+    expect(
+      await value(`
+        const [letter, ...letters] = "A😀B"
+        const [[mapKey, mapValue]] = new Map([["key", 1]])
+        const [setFirst, setSecond] = new Set([2, 3])
+        const [[queryKey, queryValue]] = new URLSearchParams("q=test&page=2")
+        return { letter, letters, mapKey, mapValue, setFirst, setSecond, queryKey, queryValue }
+      `),
+    ).toEqual({
+      letter: "A",
+      letters: ["😀", "B"],
+      mapKey: "key",
+      mapValue: 1,
+      setFirst: 2,
+      setSecond: 3,
+      queryKey: "q",
+      queryValue: "test",
+    })
+  })
+
+  test("supports iterable patterns in assignment and parameters", async () => {
+    expect(
+      await value(`
+        let first
+        let rest
+        ;[first, ...rest] = new Set([1, 2, 3])
+        const read = ([[key, value]]) => key + value
+        return { first, rest, entry: read(new Map([["a", 4]])) }
+      `),
+    ).toEqual({ first: 1, rest: [2, 3], entry: "a4" })
+  })
+
+  test("rejects computed keys that are not confined property keys", async () => {
+    const err = await error(`const key = {}; const { [key]: value } = {}`)
+    expect(err.message).toContain("Property key must be a string or number")
+  })
 })
@@ -593,6 +593,24 @@ describe("Set", () => {
 })

 describe("stdlib integration", () => {
+  test("Object.is uses SameValue semantics", async () => {
+    expect(
+      await value(`
+        const object = {}
+        return [
+          Object.is(NaN, NaN),
+          Object.is(0, -0),
+          Object.is(object, object),
+          Object.is({}, {}),
+        ]
+      `),
+    ).toEqual([true, false, true, false])
+  })
+
+  test("Object.is rejects opaque runtime references", async () => {
+    expect((await error(`return Object.is(Math.max, Math.max)`)).kind).toBe("InvalidDataValue")
+  })
+
  test("Object values and entries accept arrays", async () => {
    expect(await value(`return [Object.values(["a", "b"]), Object.entries(["a", "b"])]`)).toEqual([
      ["a", "b"],
@@ -37,21 +37,6 @@
      "bun": "./src/filesystem/fff.bun.ts",
      "node": "./src/filesystem/fff.node.ts",
      "default": "./src/filesystem/fff.bun.ts"
-    },
-    "#photon-wasm": {
-      "bun": "./src/image/photon-wasm.bun.ts",
-      "node": "./src/image/photon-wasm.node.ts",
-      "default": "./src/image/photon-wasm.bun.ts"
-    },
-    "#runtime-import": {
-      "bun": "./src/runtime/import.bun.ts",
-      "node": "./src/runtime/import.node.ts",
-      "default": "./src/runtime/import.bun.ts"
-    },
-    "#process-lock-ffi": {
-      "bun": "./src/util/process-lock-ffi.bun.ts",
-      "node": "./src/util/process-lock-ffi.node.ts",
-      "default": "./src/util/process-lock-ffi.bun.ts"
    }
  },
  "devDependencies": {
@@ -136,7 +121,6 @@
    "mime-types": "3.0.2",
    "minimatch": "10.2.5",
    "npm-package-arg": "13.0.2",
-    "resolve.exports": "catalog:",
    "semver": "^7.6.3",
    "turndown": "7.2.0",
    "venice-ai-sdk-provider": "2.1.1",
@@ -0,0 +1,112 @@
+const token = "dummy-wellknown-token"
+const port = Number(process.env.PORT ?? 8787)
+const config = {
+  $schema: "https://opencode.ai/config.json",
+  share: "manual",
+  model: "example-primary/example-chat",
+  enabled_providers: ["example-primary", "example-secondary"],
+  disabled_providers: ["opencode", "anthropic", "openai", "google", "xai", "amazon-bedrock", "azure"],
+  provider: {
+    "example-primary": {
+      name: "Example Primary",
+      npm: "@ai-sdk/openai-compatible",
+      whitelist: ["example-chat", "example-code"],
+      options: {
+        baseURL: "https://models.example.com/v1",
+        apiKey: "{env:TOKEN}",
+      },
+      models: {
+        "example-chat": {
+          name: "Example Chat",
+          reasoning: true,
+          tool_call: true,
+          attachment: true,
+          modalities: {
+            input: ["text", "image"],
+            output: ["text"],
+          },
+          limit: {
+            context: 128000,
+            output: 16000,
+          },
+        },
+        "example-code": {
+          name: "Example Code",
+          reasoning: true,
+          tool_call: true,
+          limit: {
+            context: 200000,
+            output: 32000,
+          },
+        },
+      },
+    },
+    "example-secondary": {
+      name: "Example Secondary",
+      npm: "@ai-sdk/openai-compatible",
+      whitelist: ["example-fast"],
+      options: {
+        baseURL: "https://inference.example.org/v1",
+        apiKey: "{env:TOKEN}",
+      },
+      models: {
+        "example-fast": {
+          name: "Example Fast",
+          tool_call: true,
+          limit: {
+            context: 64000,
+            output: 8000,
+          },
+        },
+      },
+    },
+  },
+  mcp: {
+    "example-tools": {
+      type: "remote",
+      url: "https://tools.example.net/mcp",
+      enabled: false,
+    },
+  },
+  permission: {
+    bash: "ask",
+    edit: "ask",
+    webfetch: "ask",
+    read: {
+      "*": "allow",
+      "*.env": "deny",
+      "*.env.*": "deny",
+      "*.env.example": "allow",
+    },
+  },
+}
+
+const server = Bun.serve({
+  hostname: "127.0.0.1",
+  port,
+  async fetch(request) {
+    const url = new URL(request.url)
+    if (url.pathname === "/.well-known/opencode") {
+      return Response.json({
+        auth: {
+          command: ["bun", "-e", `await Bun.sleep(5000); process.stdout.write(${JSON.stringify(token)})`],
+          env: "TOKEN",
+        },
+        remote_config: {
+          url: `${url.origin}/config/opencode.json`,
+          headers: { authorization: "Bearer {env:TOKEN}" },
+        },
+      })
+    }
+    if (url.pathname === "/config/opencode.json") {
+      if (request.headers.get("authorization") !== `Bearer ${token}`) {
+        return new Response("Unauthorized", { status: 401 })
+      }
+      return Response.json(config)
+    }
+    return new Response("Not found", { status: 404 })
+  },
+})
+
+console.log(`Well-known fixture listening at ${server.url.origin}`)
+console.log(`Test with: bun run dev auth connect ${server.url.origin}`)
@@ -2,8 +2,9 @@ export * as Config from "./config"

 import { makeLocationNode } from "./effect/app-node"
 import path from "path"
+import { isDeepStrictEqual } from "node:util"
 import { type ParseError, parse } from "jsonc-parser"
-import { Context, Effect, Fiber, Layer, Option, PubSub, Schema, Stream } from "effect"
+import { Context, Effect, Fiber, Layer, Option, PubSub, Schema, Semaphore, Stream } from "effect"
 import { Permission } from "@opencode-ai/schema/permission"
 import { Config as ConfigSchema } from "@opencode-ai/schema/config"
 import { Integration } from "@opencode-ai/schema/integration"
@@ -18,6 +19,7 @@ import { ConfigAgent } from "./config/agent"
 import { ConfigAttachments } from "./config/attachments"
 import { ConfigCompaction } from "./config/compaction"
 import { ConfigCommand } from "./config/command"
+import { ConfigExperimental } from "./config/experimental"
 import { ConfigFormatter } from "./config/formatter"
 import { ConfigLSP } from "./config/lsp"
 import { ConfigMCP } from "./config/mcp"
@@ -109,6 +111,7 @@ export class Info extends Schema.Class<Info>("Config.Info")({
    description: "Ordered plugin enablement directives and external package declarations",
  }),
  providers: Schema.Record(Schema.String, ConfigProvider.Info).pipe(Schema.optional),
+  experimental: ConfigExperimental.Info.pipe(Schema.optional),
 }) {}

 export class Document extends Schema.Class<Document>("Config.Document")({
@@ -163,6 +166,7 @@ const layer = Layer.effect(
    const credentials = yield* Credential.Service
    const wellknown = yield* WellKnown.Service
    const names = ["opencode.json", "opencode.jsonc"]
+    const reloadLock = Semaphore.makeUnsafe(1)
    const decodeOptions = { errors: "all", onExcessProperty: "ignore", propertyOrder: "original" } as const
    const decodeInfo = Schema.decodeUnknownOption(Info, decodeOptions)
    const decodeV1Info = Schema.decodeUnknownOption(ConfigV1.Info, decodeOptions)
@@ -324,12 +328,17 @@ const layer = Layer.effect(
      }
    })

-    const reload = Effect.fn("Config.reload")(function* () {
-      const next = yield* discover()
-      configs = next
-      yield* reconcile(next)
-      yield* events.publish(ConfigSchema.Event.Updated, {})
-    })
+    const reload = Effect.fn("Config.reload")(() =>
+      reloadLock.withPermit(
+        Effect.gen(function* () {
+          const next = yield* discover()
+          if (isDeepStrictEqual(configs, next)) return
+          configs = next
+          yield* reconcile(next)
+          yield* events.publish(ConfigSchema.Event.Updated, {})
+        }),
+      ),
+    )

    yield* Stream.fromPubSub(updates).pipe(
      Stream.debounce("100 millis"),
@@ -352,12 +361,29 @@ const layer = Layer.effect(
      ),
      Effect.forkScoped({ startImmediately: true }),
    )
-    yield* wellknown.changes.pipe(
+    yield* events.subscribe(WellKnown.Event.Updated).pipe(
      Stream.runForEach(() =>
        reload().pipe(Effect.catchCause((cause) => Effect.logError("failed to reload wellknown sources", { cause }))),
      ),
      Effect.forkScoped({ startImmediately: true }),
    )
+    yield* Effect.sleep("10 minutes").pipe(
+      Effect.andThen(
+        Effect.suspend(() => {
+          if (!wellknown.snapshot().length) return Effect.void
+          return Effect.gen(function* () {
+            const changed = yield* wellknown.refresh().pipe(
+              Effect.catch((error) =>
+                Effect.logWarning("failed to refresh wellknown manifests", { error }).pipe(Effect.as(false)),
+              ),
+            )
+            if (!changed) yield* reload()
+          }).pipe(Effect.catchCause((cause) => Effect.logWarning("failed to refresh wellknown config", { cause })))
+        }),
+      ),
+      Effect.forever,
+      Effect.forkScoped({ startImmediately: true }),
+    )
    yield* reconcile(initial)

    return Service.of({
@@ -0,0 +1,14 @@
+export * as ConfigExperimental from "./experimental"
+
+import { Schema } from "effect"
+import { NonNegativeInt } from "../schema"
+import { ConfigPolicy } from "./policy"
+
+export class Info extends Schema.Class<Info>("ConfigExperimental.Info")({
+  subagent_depth: NonNegativeInt.pipe(Schema.optional).annotate({
+    description: "Maximum subagent nesting depth. Defaults to 1.",
+  }),
+  policies: ConfigPolicy.Info.pipe(Schema.Array, Schema.optional).annotate({
+    description: "Ordered policies controlling access to configured resources",
+  }),
+}) {}
@@ -0,0 +1,35 @@
+export * as ConfigPolicyPlugin from "./policy"
+
+import { define } from "@opencode-ai/plugin/v2/effect/plugin"
+import { Effect, Stream } from "effect"
+import { Config } from "../../config"
+import { Wildcard } from "../../util/wildcard"
+
+export const Plugin = define({
+  id: "opencode.config.policy",
+  effect: Effect.fn(function* (ctx) {
+    const config = yield* Config.Service
+    const loaded = { entries: yield* config.entries() }
+    yield* ctx.catalog.transform((catalog) => {
+      // User-global policy takes priority over policy authored by a repository.
+      const policies = loaded.entries
+        .filter((entry): entry is Config.Document => entry.type === "document")
+        .toReversed()
+        .flatMap((entry) => entry.info.experimental?.policies ?? [])
+      for (const record of catalog.provider.list()) {
+        const policy = policies.findLast((policy) => Wildcard.match(record.provider.id, policy.resource))
+        if (policy?.effect === "deny") catalog.provider.remove(record.provider.id)
+      }
+    })
+    yield* ctx.event.subscribe().pipe(
+      Stream.filter((event) => event.type === "config.updated"),
+      Stream.runForEach(() =>
+        config.entries().pipe(
+          Effect.tap((entries) => Effect.sync(() => (loaded.entries = entries))),
+          Effect.andThen(ctx.catalog.reload()),
+        ),
+      ),
+      Effect.forkScoped({ startImmediately: true }),
+    )
+  }),
+})
@@ -0,0 +1,13 @@
+export * as ConfigPolicy from "./policy"
+
+import { Schema } from "effect"
+
+export const Effect = Schema.Literals(["allow", "deny"])
+export type Effect = typeof Effect.Type
+
+export const Info = Schema.Struct({
+  action: Schema.Literal("provider.use"),
+  resource: Schema.String,
+  effect: Effect,
+})
+export type Info = typeof Info.Type
@@ -11,12 +11,10 @@ import { Flag } from "../flag/flag"
 import { lazy } from "../util/lazy"
 import { watch as watchFileSystem } from "node:fs"
 import path from "path"
-import { createRequire } from "node:module"

 declare const OPENCODE_LIBC: string | undefined

 const SUBSCRIBE_TIMEOUT_MS = 10_000
-const require = createRequire(import.meta.url)

 export const Event = { Updated: FileSystem.Event.Changed }

@@ -24,8 +22,7 @@ const watcher = lazy((): typeof import("@parcel/watcher") | undefined => {
  try {
    const libc = typeof OPENCODE_LIBC === "undefined" ? undefined : OPENCODE_LIBC
    const binding = require(
-      process.env.OPENCODE_PARCEL_WATCHER_PATH ??
-        `@parcel/watcher-${process.platform}-${process.arch}${process.platform === "linux" ? `-${libc || "glibc"}` : ""}`,
+      `@parcel/watcher-${process.platform}-${process.arch}${process.platform === "linux" ? `-${libc || "glibc"}` : ""}`,
    )
    return createWrapper(binding) as typeof import("@parcel/watcher")
  } catch {
@@ -1,4 +0,0 @@
-// @ts-ignore Bun embeds static file imports when compiling the CLI.
-import photonWasm from "@silvia-odwyer/photon-node/photon_rs_bg.wasm" with { type: "file" }
-
-export default photonWasm
@@ -1,4 +0,0 @@
-import { createRequire } from "node:module"
-
-export default process.env.OPENCODE_PHOTON_WASM_PATH ??
-  createRequire(import.meta.url).resolve("@silvia-odwyer/photon-node/photon_rs_bg.wasm")
@@ -1,4 +1,5 @@
-import photonWasm from "#photon-wasm"
+// @ts-ignore Bun's static file import is embedded by `bun build --compile`; some consumers also declare *.wasm.
+import photonWasm from "@silvia-odwyer/photon-node/photon_rs_bg.wasm" with { type: "file" }
 import { Effect } from "effect"
 import path from "node:path"
 import { fileURLToPath } from "node:url"
@@ -27,18 +27,19 @@ import { Pty } from "./pty"
 import { QuestionV2 } from "./question"
 import { Shell } from "./shell"
 import { Reference } from "./reference"
-import { ReferenceGuidance } from "./reference/guidance"
+import { ReferenceInstructions } from "./reference/instructions"
 import { SessionRunnerLLM } from "./session/runner/llm"
 import { SessionRunnerModel } from "./session/runner/model"
 import { SessionCompaction } from "./session/compaction"
 import { SessionTitle } from "./session/title"
 import { SkillV2 } from "./skill"
-import { SkillGuidance } from "./skill/guidance"
+import { SkillInstructions } from "./skill/instructions"
 import { Snapshot } from "./snapshot"
 import { InstructionDiscovery } from "./instruction-discovery"
 import { InstructionBuiltIns } from "./instructions/builtins"
 import { InstructionEntry } from "./session/instruction-entry"
 import { SessionInstructions } from "./session/instructions"
+import { SessionGenerateNode } from "./session/generate-node"
 import { McpTool } from "./tool/mcp"
 import { ReadToolFileSystem } from "./tool/read-filesystem"
 import { ToolRegistry } from "./tool/registry"
@@ -75,12 +76,13 @@ const locationServiceNodes = [
  ToolRegistry.node,
  ToolRegistry.toolsNode,
  Image.node,
-  SkillGuidance.node,
-  ReferenceGuidance.node,
+  SkillInstructions.node,
+  ReferenceInstructions.node,
  InstructionEntry.node,
  Form.node,
  QuestionV2.node,
  Generate.node,
+  SessionGenerateNode.node,
  ReadToolFileSystem.node,
  McpTool.node,
  SessionInstructions.node,
@@ -1,4 +1,4 @@
-export * as McpGuidance from "./guidance"
+export * as McpInstructions from "./instructions"

 import { makeLocationNode } from "../effect/app-node"
 import { Context, Effect, Layer, Schema } from "effect"
@@ -54,7 +54,7 @@ export interface Interface {
  readonly load: (agent: AgentV2.Selection) => Effect.Effect<Instructions.Instructions>
 }

-export class Service extends Context.Service<Service, Interface>()("@opencode/v2/McpGuidance") {}
+export class Service extends Context.Service<Service, Interface>()("@opencode/v2/McpInstructions") {}

 export const layer = Layer.effect(
  Service,
@@ -62,7 +62,7 @@ export const layer = Layer.effect(
    const mcp = yield* MCP.Service

    return Service.of({
-      load: Effect.fn("McpGuidance.load")(function* (selection) {
+      load: Effect.fn("McpInstructions.load")(function* (selection) {
        const agent = selection.info
        if (!agent) return Instructions.empty
        const source = (value: ReadonlyArray<Summary> | Instructions.Removed) =>
@@ -1,18 +0,0 @@
-declare module "node:ffi" {
-  type Signature = {
-    readonly arguments?: readonly string[]
-    readonly return?: string
-  }
-
-  type ForeignFunction = (...args: ReadonlyArray<unknown>) => number | bigint
-
-  export function dlopen(
-    path: string,
-    definitions: Readonly<Record<string, Signature>>,
-  ): {
-    readonly lib: { close(): void }
-    readonly functions: Readonly<Record<string, ForeignFunction>>
-  }
-
-  export function getInt32(pointer: number | bigint, offset?: number): number
-}
@@ -12,7 +12,6 @@ import { filesystem } from "./effect/app-node-platform"
 import { LayerNode } from "./effect/layer-node"
 import { makeRuntime } from "./effect/runtime"
 import { NpmConfig } from "./npm-config"
-import { resolveModule } from "#runtime-import"

 export class InstallFailedError extends Schema.TaggedErrorClass<InstallFailedError>()("NpmInstallFailedError", {
  add: Schema.Array(Schema.String).pipe(Schema.optional),
@@ -55,7 +54,9 @@ const resolveEntryPoint = (name: string, dir: string, subpaths: readonly string[
  const entrypoint = subpaths
    .map((subpath) => {
      try {
-        return resolveModule([name, subpath].filter(Boolean).join("/"), dir)
+        return typeof Bun !== "undefined"
+          ? import.meta.resolve([name, subpath].filter(Boolean).join("/"), dir)
+          : import.meta.resolve(dir)
      } catch {
        return undefined
      }
@@ -10,6 +10,7 @@ import { Config } from "../config"
 import { ConfigAgentPlugin } from "../config/plugin/agent"
 import { ConfigCommandPlugin } from "../config/plugin/command"
 import { ConfigProviderPlugin } from "../config/plugin/provider"
+import { ConfigPolicyPlugin } from "../config/plugin/policy"
 import { ConfigReferencePlugin } from "../config/plugin/reference"
 import { ConfigSkillPlugin } from "../config/plugin/skill"
 import { EventV2 } from "../event"
@@ -151,6 +152,7 @@ const post = [
  ConfigSkillPlugin.Plugin,
  ConfigProviderPlugin.Plugin,
  VariantPlugin.Plugin,
+  ConfigPolicyPlugin.Plugin,
 ] as const satisfies readonly InternalPlugin[]

 export const list = Effect.fn("PluginInternal.list")(function* () {
@@ -2,7 +2,6 @@ import { Effect } from "effect"
 import { pathToFileURL } from "url"
 import { define } from "@opencode-ai/plugin/v2/effect/plugin"
 import { Npm } from "../../npm"
-import { importModule } from "#runtime-import"

 export const DynamicProviderPlugin = define({
  id: "opencode.provider.dynamic",
@@ -18,9 +17,11 @@ export const DynamicProviderPlugin = define({
          : (yield* npm.add(evt.package).pipe(Effect.orDie)).entrypoint
        if (!installedPath) throw new Error(`Package ${evt.package} has no import entrypoint`)

-        const mod = (yield* Effect.promise(() =>
-          importModule(installedPath.startsWith("file://") ? installedPath : pathToFileURL(installedPath).href),
-        ).pipe(Effect.orDie)) as Record<string, (options: any) => any>
+        const mod = yield* Effect.promise(async () => {
+          return (await import(
+            installedPath.startsWith("file://") ? installedPath : pathToFileURL(installedPath).href
+          )) as Record<string, (options: any) => any>
+        }).pipe(Effect.orDie)
        const match = Object.keys(mod).find((name) => name.startsWith("create"))
        if (!match) throw new Error(`Package ${evt.package} has no provider factory export`)

@@ -3,7 +3,6 @@ import { pathToFileURL } from "url"
 import { define } from "@opencode-ai/plugin/v2/effect/plugin"
 import { Npm } from "../../npm"
 import { ProviderV2 } from "../../provider"
-import { importModule } from "#runtime-import"

 export const SapAICorePlugin = define({
  id: "opencode.provider.sap-ai-core",
@@ -23,9 +22,9 @@ export const SapAICorePlugin = define({
          : (yield* npm.add(evt.package).pipe(Effect.orDie)).entrypoint
        if (!installedPath) return yield* Effect.die(new Error(`Package ${evt.package} has no import entrypoint`))

-        const mod = (yield* Effect.promise(() =>
-          importModule(installedPath.startsWith("file://") ? installedPath : pathToFileURL(installedPath).href),
-        )) as Record<string, unknown>
+        const mod: Record<string, unknown> = yield* Effect.promise(
+          () => import(installedPath.startsWith("file://") ? installedPath : pathToFileURL(installedPath).href),
+        )
        const match = Object.keys(mod).find((name) => name.startsWith("create"))
        if (!match) return yield* Effect.die(new Error(`Package ${evt.package} has no provider factory export`))
        const factory = mod[match]
@@ -39,7 +39,6 @@ import { WellKnown } from "../wellknown"
 import { PluginInternal } from "./internal"
 import { PluginRuntime } from "./runtime"
 import { SdkPlugins } from "./sdk"
-import { importModule } from "#runtime-import"

 const PluginModule = Schema.Struct({
  default: Schema.Union([
@@ -165,13 +164,9 @@ const load = Effect.fn("PluginSupervisor.load")(function* (operation: Extract<Op
  if (!entrypoint) return
  // Bun currently ignores query parameters when caching file:// imports.
  const source =
-    operation.mtime === undefined
-      ? entrypoint
-      : typeof Bun !== "undefined"
-        ? `${operation.target.replaceAll("\\", "/")}?mtime=${operation.mtime}`
-        : `${entrypoint}?mtime=${operation.mtime}`
+    operation.mtime === undefined ? entrypoint : `${operation.target.replaceAll("\\", "/")}?mtime=${operation.mtime}`
  yield* Effect.log({ msg: "loading plugin", id: operation.target, entrypoint: source })
-  const mod = yield* Effect.promise(() => importModule(source))
+  const mod = yield* Effect.promise(() => import(source))
  const value = (yield* Schema.decodeUnknownEffect(PluginModule)(mod)).default
  const plugin = "effect" in value ? value : PluginPromise.fromPromise(value)
  return {
@@ -1,11 +1,11 @@
 export * as ProviderV2 from "./provider"

 import { Effect, Schema } from "effect"
+import { pathToFileURL } from "url"
 import { Provider } from "@opencode-ai/schema/provider"
 import type { ProviderPackageDefinition } from "@opencode-ai/ai"
 import { Npm } from "./npm"
 import type { DeepMutable } from "./schema"
-import { importModule, resolveModule } from "#runtime-import"

 export const ID = Provider.ID
 export type ID = typeof ID.Type
@@ -32,24 +32,8 @@ export class LoadError extends Schema.TaggedErrorClass<LoadError>()("ProviderV2.
 export type ProviderPackage = ProviderPackageDefinition

 const packages = new Map<string, Promise<unknown>>()
-const builtins = new Map<string, () => Promise<unknown>>([
-  ["@opencode-ai/ai/providers/amazon-bedrock", () => import("@opencode-ai/ai/providers/amazon-bedrock")],
-  ["@opencode-ai/ai/providers/anthropic", () => import("@opencode-ai/ai/providers/anthropic")],
-  ["@opencode-ai/ai/providers/azure", () => import("@opencode-ai/ai/providers/azure")],
-  ["@opencode-ai/ai/providers/azure/chat", () => import("@opencode-ai/ai/providers/azure/chat")],
-  ["@opencode-ai/ai/providers/azure/responses", () => import("@opencode-ai/ai/providers/azure/responses")],
-  ["@opencode-ai/ai/providers/google", () => import("@opencode-ai/ai/providers/google")],
-  ["@opencode-ai/ai/providers/openai", () => import("@opencode-ai/ai/providers/openai")],
-  ["@opencode-ai/ai/providers/openai/chat", () => import("@opencode-ai/ai/providers/openai/chat")],
-  ["@opencode-ai/ai/providers/openai/responses", () => import("@opencode-ai/ai/providers/openai/responses")],
-  ["@opencode-ai/ai/providers/openai-compatible", () => import("@opencode-ai/ai/providers/openai-compatible")],
-  ["@opencode-ai/ai/providers/openrouter", () => import("@opencode-ai/ai/providers/openrouter")],
-  ["@opencode-ai/ai/providers/xai", () => import("@opencode-ai/ai/providers/xai")],
-])

 export const loadPackage = Effect.fn("ProviderV2.loadPackage")(function* (specifier: string, npm?: Npm.Interface) {
-  const builtin = builtins.get(specifier)
-  if (builtin) return yield* importPackage(specifier, specifier, builtin)
  const resolved = yield* Effect.sync(() => {
    if (specifier.startsWith("file://") || specifier.startsWith("@opencode-ai/ai/")) return specifier
    try {
@@ -69,8 +53,7 @@ export const loadPackage = Effect.fn("ProviderV2.loadPackage")(function* (specif
  const root = specifier.startsWith("@") ? parts.slice(0, 2).join("/") : (parts[0] ?? specifier)
  const installed = yield* npm.add(root).pipe(Effect.mapError((cause) => new LoadError({ package: specifier, cause })))
  const entrypoint = yield* Effect.try({
-    try: () =>
-      specifier === root && installed.entrypoint ? installed.entrypoint : resolveModule(specifier, installed.directory),
+    try: () => import.meta.resolve(specifier, pathToFileURL(`${installed.directory}/`).href),
    catch: (cause) => new LoadError({ package: specifier, cause }),
  })
  return yield* importPackage(specifier, entrypoint)
@@ -133,16 +116,12 @@ export type Info = Provider.Info

 export type MutableInfo = DeepMutable<Info>

-const importPackage = Effect.fn("ProviderV2.importPackage")(function* (
-  specifier: string,
-  entrypoint: string,
-  load = () => importModule(entrypoint),
-) {
+const importPackage = Effect.fn("ProviderV2.importPackage")(function* (specifier: string, entrypoint: string) {
  const module = yield* Effect.tryPromise({
    try: () => {
      const existing = packages.get(entrypoint)
      if (existing) return existing
-      const loaded = load()
+      const loaded = import(entrypoint)
      packages.set(entrypoint, loaded)
      return loaded
    },
@@ -1,15 +1,11 @@
-import { createRequire } from "node:module"
-import { isSea } from "node:sea"
+// ast-grep-ignore: no-star-import
+import * as pty from "@lydell/node-pty"
 import type { Opts, Proc } from "./pty"

 export type { Disp, Exit, Opts, Proc } from "./pty"

-const pty = createRequire(import.meta.url)(
-  process.env.OPENCODE_NODE_PTY_PATH ?? "@lydell/node-pty",
-) as typeof import("@lydell/node-pty")
-
 export function spawn(file: string, args: string[], opts: Opts): Proc {
-  const proc = pty.spawn(file, args, process.platform === "win32" && isSea() ? { ...opts, useConptyDll: true } : opts)
+  const proc = pty.spawn(file, args, opts)
  return {
    pid: proc.pid,
    onData(listener) {
@@ -1,4 +1,4 @@
-export * as ReferenceGuidance from "./guidance"
+export * as ReferenceInstructions from "./instructions"

 import { makeLocationNode } from "../effect/app-node"
 import { Context, Effect, Layer, Schema } from "effect"
@@ -57,7 +57,7 @@ export interface Interface {
  readonly load: () => Effect.Effect<Instructions.Instructions>
 }

-export class Service extends Context.Service<Service, Interface>()("@opencode/v2/ReferenceGuidance") {}
+export class Service extends Context.Service<Service, Interface>()("@opencode/v2/ReferenceInstructions") {}

 const layer = Layer.effect(
  Service,
@@ -65,7 +65,7 @@ const layer = Layer.effect(
    const references = yield* Reference.Service

    return Service.of({
-      load: Effect.fn("ReferenceGuidance.load")(function* () {
+      load: Effect.fn("ReferenceInstructions.load")(function* () {
        const available = (yield* references.list())
          .filter((reference) => reference.description !== undefined)
          .map((reference) => ({
@@ -1,7 +0,0 @@
-export function importModule(specifier: string) {
-  return import(specifier) as Promise<unknown>
-}
-
-export function resolveModule(specifier: string, directory: string) {
-  return import.meta.resolve(specifier, directory)
-}
@@ -1,39 +0,0 @@
-import { Script, constants } from "node:vm"
-import { createRequire, registerHooks } from "node:module"
-import path from "node:path"
-import { pathToFileURL } from "node:url"
-import { resolve, type Package } from "resolve.exports"
-
-let conditions: readonly string[] = []
-const conditionHooks = registerHooks({
-  resolve(specifier, context, nextResolve) {
-    conditions = context.conditions
-    return nextResolve(specifier, context)
-  },
-})
-await new Script('import("node:module")', {
-  importModuleDynamically: constants.USE_MAIN_CONTEXT_DEFAULT_LOADER,
-}).runInThisContext()
-conditionHooks.deregister()
-
-export async function importModule(specifier: string) {
-  const imported = (await new Script(`import(${JSON.stringify(specifier)})`, {
-    importModuleDynamically: constants.USE_MAIN_CONTEXT_DEFAULT_LOADER,
-  }).runInThisContext()) as unknown
-  if (typeof imported !== "object" || imported === null) return imported
-
-  const module = imported as Record<string, unknown>
-  const exports = module["module.exports"]
-  if (exports !== module.default || (typeof exports !== "object" && typeof exports !== "function") || exports === null)
-    return imported
-  return Object.assign({}, module, exports)
-}
-
-export function resolveModule(specifier: string, directory: string) {
-  const pkg = createRequire(import.meta.url)(path.join(directory, "package.json")) as Package
-  const target = resolve(pkg, specifier, { conditions, unsafe: true })?.[0]
-  if (target) return pathToFileURL(path.resolve(directory, target)).href
-  const legacyTarget =
-    specifier === pkg.name ? directory : path.resolve(directory, specifier.slice(pkg.name.length + 1))
-  return pathToFileURL(createRequire(path.join(directory, "package.json")).resolve(legacyTarget)).href
-}
@@ -33,10 +33,12 @@ import { LocationServiceMap } from "./location-service-map"
 import { MessageDecodeError } from "./session/error"
 import { SessionEvent } from "./session/event"
 import { SessionPending } from "./session/pending"
+import { SessionGenerate } from "./session/generate"
 import { Snapshot } from "./snapshot"
 import { SessionRevert } from "./session/revert"
 import { Session } from "@opencode-ai/schema/session"
 import { FSUtil } from "./fs-util"
+import { Image } from "./image"
 import { Mime } from "./mime"
 import type { EventLog } from "@opencode-ai/schema/event-log"
 import { SkillV2 } from "./skill"
@@ -175,6 +177,7 @@ export type Error =
  | CommandV2.NotFoundError
  | CommandV2.EvaluationError
  | MessageNotFoundError
+  | SessionGenerate.Error

 export interface Interface {
  readonly list: (input?: ListInput) => Effect.Effect<{
@@ -243,6 +246,11 @@ export interface Interface {
    delivery?: SessionPending.Delivery
    resume?: boolean
  }) => Effect.Effect<SessionPending.User, NotFoundError | PromptConflictError | AttachmentError>
+  /** Generates text from current Session context without admitting input or mutating history. */
+  readonly generate: (input: {
+    sessionID: SessionSchema.ID
+    prompt: string
+  }) => Effect.Effect<string, NotFoundError | SessionGenerate.Error>
  readonly command: (input: {
    id?: SessionMessage.ID
    sessionID: SessionSchema.ID
@@ -531,9 +539,13 @@ const layer = Layer.effect(
            // continues from the reverted boundary rather than stale post-boundary history.
            if (session.revert)
              yield* SessionRevert.commit(session).pipe(Effect.provideService(EventV2.Service, events))
-            const prompt = yield* resolvePrompt({ text: input.text, files: input.files, agents: input.agents }).pipe(
-              Effect.provideService(FSUtil.Service, fs),
-            )
+            // Resolved lazily so prompt admission only boots location services when an
+            // image attachment actually needs the resizer.
+            const image = Image.Service.pipe(Effect.provide(locations.get(session.location)))
+            const prompt = yield* resolvePrompt(
+              { text: input.text, files: input.files, agents: input.agents },
+              image,
+            ).pipe(Effect.provideService(FSUtil.Service, fs))
            const messageID = input.id ?? SessionMessage.ID.create()
            const admittedInput = SessionPending.Message.make({
              type: "user",
@@ -564,6 +576,11 @@ const layer = Layer.effect(
          }),
        ),
      ),
+      generate: Effect.fn("V2Session.generate")(function* (input) {
+        const session = yield* result.get(input.sessionID)
+        const generate = yield* SessionGenerate.Service.pipe(Effect.provide(locations.get(session.location)))
+        return yield* generate.generate(input)
+      }),
      command: Effect.fn("V2Session.command")(function* (input) {
        const session = yield* result.get(input.sessionID)
        const commands = yield* CommandV2.Service.pipe(Effect.provide(locations.get(session.location)))
@@ -859,10 +876,13 @@ function synthesizeTerminalShellInfo(started: ShellSchema.Info): ShellSchema.Inf
  }
 }

-const resolvePrompt = Effect.fn("V2Session.resolvePrompt")(function* (input: PromptInput.Prompt) {
+const resolvePrompt = Effect.fn("V2Session.resolvePrompt")(function* (
+  input: PromptInput.Prompt,
+  image: Effect.Effect<Image.Interface>,
+) {
  const fs = yield* FSUtil.Service
  const files = input.files
-    ? yield* Effect.forEach(input.files, (file) => materializeAttachment(fs, file), { concurrency: 8 })
+    ? yield* Effect.forEach(input.files, (file) => materializeAttachment(fs, file, image), { concurrency: 8 })
    : undefined
  return Prompt.make({ text: input.text, agents: input.agents, files })
 })
@@ -872,6 +892,7 @@ const MAX_ATTACHMENT_BYTES = 20 * 1024 * 1024
 const materializeAttachment = Effect.fn("V2Session.materializeAttachment")(function* (
  fs: FSUtil.Interface,
  input: PromptInput.FileAttachment,
+  image: Effect.Effect<Image.Interface>,
 ) {
  const resolved = input.uri.startsWith("data:")
    ? {
@@ -900,9 +921,15 @@ const materializeAttachment = Effect.fn("V2Session.materializeAttachment")(funct
            .join("\n"),
        )
      : resolved.bytes
-  return FileAttachment.create({
-    data: Base64.make(Buffer.from(content).toString("base64")),
+  const normalized = yield* normalizeImageAttachment(
+    input,
+    Base64.make(Buffer.from(content).toString("base64")),
    mime,
+    image,
+  )
+  return FileAttachment.create({
+    data: normalized.data,
+    mime: normalized.mime,
    source: resolved.source,
    name: input.name ?? resolved.name,
    description: input.description,
@@ -910,6 +937,23 @@ const materializeAttachment = Effect.fn("V2Session.materializeAttachment")(funct
  })
 })

+const normalizeImageAttachment = Effect.fn("V2Session.normalizeImageAttachment")(function* (
+  input: PromptInput.FileAttachment,
+  data: Base64,
+  mime: string,
+  image: Effect.Effect<Image.Interface>,
+) {
+  if (!mime.startsWith("image/")) return { data, mime }
+  const service = yield* image
+  const label = input.name ?? (input.uri.startsWith("data:") ? "inline attachment" : input.uri)
+  const content = { uri: label, content: data, encoding: "base64" as const, mime }
+  const normalized = yield* service.normalize(label, content).pipe(
+    Effect.catchTag("Image.ResizerUnavailableError", () => Effect.succeed(content)),
+    Effect.mapError((error) => new AttachmentError({ uri: label, message: error.message })),
+  )
+  return { data: Base64.make(normalized.content), mime: normalized.mime }
+})
+
 const readFileAttachment = Effect.fn("V2Session.readFileAttachment")(function* (fs: FSUtil.Interface, uri: string) {
  const url = yield* Effect.try({
    try: () => new URL(uri),
@@ -8,10 +8,10 @@ import { InstructionDiscovery } from "../instruction-discovery"
 import { Instructions } from "../instructions/index"
 import { InstructionBuiltIns } from "../instructions/builtins"
 import { Location } from "../location"
-import { McpGuidance } from "../mcp/guidance"
+import { McpInstructions } from "../mcp/instructions"
 import { PluginSupervisor } from "../plugin/supervisor"
-import { ReferenceGuidance } from "../reference/guidance"
-import { SkillGuidance } from "../skill/guidance"
+import { ReferenceInstructions } from "../reference/instructions"
+import { SkillInstructions } from "../skill/instructions"
 import { AgentNotFoundError } from "./error"
 import { SessionHistory } from "./history"
 import { InstructionEntry } from "./instruction-entry"
@@ -34,13 +34,19 @@ export interface Loaded {
  readonly messages: ReadonlyArray<SessionMessage.Info>
 }

+/**
+ * Resolves model-request state in two phases: `select` fixes the Session,
+ * agent, and instruction sources; `load` adds the model and active history for
+ * that selection. This module does not build or execute the model request.
+ */
 export interface Interface {
-  /** Resolves the Session, selected agent, and current instruction sources before durable Step preparation. */
+  /** Selects the Session, agent, and instruction sources used by subsequent work. */
  readonly select: (sessionID: SessionSchema.ID) => Effect.Effect<Selection, AgentNotFoundError>
-  /** Loads the selected model and active history after instruction sync and pending-input promotion. */
+  /** Resolves the model and active history for that selection. */
  readonly load: (selection: Selection) => Effect.Effect<Loaded, SessionRunnerModel.Error>
 }

+/** Location-scoped model-context loader for durable Session Steps. */
 export class Service extends Context.Service<Service, Interface>()("@opencode/v2/SessionContext") {}

 const layer = Layer.effect(
@@ -52,11 +58,11 @@ const layer = Layer.effect(
    const discovery = yield* InstructionDiscovery.Service
    const entries = yield* InstructionEntry.Service
    const location = yield* Location.Service
-    const mcpGuidance = yield* McpGuidance.Service
+    const mcpInstructions = yield* McpInstructions.Service
    const models = yield* SessionRunnerModel.Service
    const plugins = yield* PluginSupervisor.Service
-    const referenceGuidance = yield* ReferenceGuidance.Service
-    const skillGuidance = yield* SkillGuidance.Service
+    const referenceInstructions = yield* ReferenceInstructions.Service
+    const skillInstructions = yield* SkillInstructions.Service
    const store = yield* SessionStore.Service

    const select = Effect.fn("SessionContext.select")(function* (sessionID: SessionSchema.ID) {
@@ -72,9 +78,9 @@ const layer = Layer.effect(
        [
          builtins.load(sessionID),
          discovery.load(),
-          skillGuidance.load(agent),
-          referenceGuidance.load(),
-          mcpGuidance.load(agent),
+          skillInstructions.load(agent),
+          referenceInstructions.load(),
+          mcpInstructions.load(agent),
          entries.load(sessionID),
        ],
        { concurrency: "unbounded" },
@@ -108,11 +114,11 @@ export const node = makeLocationNode({
    InstructionDiscovery.node,
    InstructionEntry.node,
    Location.node,
-    McpGuidance.node,
+    McpInstructions.node,
    PluginSupervisor.node,
-    ReferenceGuidance.node,
+    ReferenceInstructions.node,
    SessionRunnerModel.node,
    SessionStore.node,
-    SkillGuidance.node,
+    SkillInstructions.node,
  ],
 })
@@ -0,0 +1,69 @@
+export * as SessionGenerateNode from "./generate-node"
+
+import { LLM, LLMClient, Message, SystemPart } from "@opencode-ai/ai"
+import { Effect, Layer } from "effect"
+import { Database } from "../database/database"
+import { makeLocationNode } from "../effect/app-node"
+import { llmClient } from "../effect/app-node-platform"
+import { PluginHooks } from "../plugin/hooks"
+import { SessionContext } from "./context"
+import { SessionGenerate } from "./generate"
+import { SessionHistory } from "./history"
+import { SessionModelHeaders } from "./model-headers"
+import { SessionRunnerModel } from "./runner/model"
+import PROMPT_DEFAULT from "./runner/prompt/base.txt"
+import { toLLMMessages } from "./runner/to-llm-message"
+
+const layer = Layer.effect(
+  SessionGenerate.Service,
+  Effect.gen(function* () {
+    const context = yield* SessionContext.Service
+    const database = yield* Database.Service
+    const hooks = yield* PluginHooks.Service
+    const llm = yield* LLMClient.Service
+    const models = yield* SessionRunnerModel.Service
+
+    return SessionGenerate.Service.of({
+      generate: Effect.fn("SessionGenerate.generate")(function* (input) {
+        const selection = yield* context.select(input.sessionID)
+        const model = yield* models.resolve(selection.session)
+        const history = yield* SessionHistory.preview(database.db, selection.session.id, selection.instructions)
+        const providerMetadataKey = model.model.route.providerMetadataKey ?? model.model.provider
+        const promptCacheKey = /^ses_[0-9a-f]{64}$/.test(selection.session.id)
+          ? selection.session.id.slice(4)
+          : selection.session.id
+        const contextEvent = yield* hooks.trigger("session", "context", {
+          sessionID: selection.session.id,
+          agent: selection.agent.id,
+          model: model.ref,
+          system: [selection.agent.info.system ? selection.agent.info.system : PROMPT_DEFAULT, history.initial]
+            .filter((part) => part.length > 0)
+            .map(SystemPart.make),
+          messages: [
+            ...toLLMMessages(history.messages, model.ref, providerMetadataKey),
+            ...(history.instructionUpdate ? [Message.system(history.instructionUpdate)] : []),
+            Message.user(input.prompt),
+          ],
+          tools: {},
+        })
+        return (yield* llm.generate(
+          LLM.request({
+            model: model.model,
+            http: { headers: SessionModelHeaders.make(selection.session) },
+            providerOptions: { openai: { promptCacheKey } },
+            system: contextEvent.system,
+            messages: contextEvent.messages,
+            tools: [],
+            toolChoice: "none",
+          }),
+        )).text
+      }),
+    })
+  }),
+)
+
+export const node = makeLocationNode({
+  service: SessionGenerate.Service,
+  layer,
+  deps: [SessionContext.node, Database.node, PluginHooks.node, SessionRunnerModel.node, llmClient],
+})
@@ -0,0 +1,21 @@
+export * as SessionGenerate from "./generate"
+
+import type { LLMError } from "@opencode-ai/ai"
+import { Context, type Effect } from "effect"
+import type { Instructions } from "../instructions"
+import type { AgentNotFoundError } from "./error"
+import type { SessionRunnerModel } from "./runner/model"
+import type { SessionSchema } from "./schema"
+
+export type Error = AgentNotFoundError | Instructions.InitializationBlocked | SessionRunnerModel.Error | LLMError
+
+export interface Interface {
+  /** Generates text from current Session context without mutating the Session. */
+  readonly generate: (input: {
+    readonly sessionID: SessionSchema.ID
+    readonly prompt: string
+  }) => Effect.Effect<string, Error>
+}
+
+/** Location-scoped transient generation from Session context. */
+export class Service extends Context.Service<Service, Interface>()("@opencode/v2/SessionGenerate") {}
@@ -60,13 +60,17 @@ const decodeMessageRow = (row: typeof SessionMessageTable.$inferSelect) =>
    ),
  )

-export const load = Effect.fn("SessionHistory.load")(function* (db: DatabaseService, sessionID: SessionSchema.ID) {
-  return yield* Effect.forEach(
-    yield* messageRows(db, sessionID, yield* latestCompaction(db, sessionID)),
-    decodeMessageRow,
+const messageEntries = Effect.fnUntraced(function* (db: DatabaseService, sessionID: SessionSchema.ID) {
+  const rows = yield* messageRows(db, sessionID, yield* latestCompaction(db, sessionID))
+  return yield* Effect.forEach(rows, (row) =>
+    decodeMessageRow(row).pipe(Effect.map((message) => ({ seq: row.seq, message }))),
  )
 })

+export const load = Effect.fn("SessionHistory.load")(function* (db: DatabaseService, sessionID: SessionSchema.ID) {
+  return (yield* messageEntries(db, sessionID)).map((entry) => entry.message)
+})
+
 export const entriesForRunner = Effect.fn("SessionHistory.entriesForRunner")(function* (
  db: DatabaseService,
  sessionID: SessionSchema.ID,
@@ -75,10 +79,7 @@ export const entriesForRunner = Effect.fn("SessionHistory.entriesForRunner")(fun
  return yield* db
    .transaction(() =>
      Effect.gen(function* () {
-        const rows = yield* messageRows(db, sessionID, yield* latestCompaction(db, sessionID))
-        const messages = yield* Effect.forEach(rows, (row) =>
-          decodeMessageRow(row).pipe(Effect.map((message) => ({ seq: row.seq, message }))),
-        )
+        const messages = yield* messageEntries(db, sessionID)
        const assembled = yield* InstructionState.assemble(db, sessionID, instructions)
        return {
          initial: assembled.initial,
@@ -89,6 +90,33 @@ export const entriesForRunner = Effect.fn("SessionHistory.entriesForRunner")(fun
    .pipe(Effect.orDie)
 })

+export const preview = Effect.fn("SessionHistory.preview")(function* (
+  db: DatabaseService,
+  sessionID: SessionSchema.ID,
+  instructions: Instructions.Instructions,
+) {
+  const observed = yield* Instructions.read(instructions)
+  return yield* db
+    .transaction(() =>
+      Effect.gen(function* () {
+        const messages = yield* messageEntries(db, sessionID)
+        // An active assistant may contain an unresolved tool call, so only preview the settled prefix.
+        const unsettled = messages.findIndex(
+          (entry) => entry.message.type === "assistant" && entry.message.time.completed === undefined,
+        )
+        const settled = unsettled === -1 ? messages : messages.slice(0, unsettled)
+        const assembled = yield* InstructionState.preview(db, sessionID, instructions, observed)
+        const entries = [...settled, ...assembled.updates].toSorted((a, b) => a.seq - b.seq)
+        return {
+          initial: assembled.initial,
+          messages: entries.map((entry) => entry.message),
+          instructionUpdate: assembled.update,
+        }
+      }),
+    )
+    .pipe(Effect.catch((error) => (error instanceof Instructions.InitializationBlocked ? error : Effect.die(error))))
+})
+
 /** Returns the session's sole user message, or `undefined` once a second one exists. */
 export const firstUserMessageIfOnly = Effect.fn("SessionHistory.firstUserMessageIfOnly")(function* (
  db: DatabaseService,
@@ -15,27 +15,52 @@ type DatabaseService = Database.Interface["db"]

 const decodeInstructionsUpdated = Schema.decodeUnknownSync(SessionEvent.InstructionsUpdated.data)

+export interface Observation extends Instructions.Admission {
+  readonly sessionID: SessionSchema.ID
+  readonly initial: boolean
+  readonly current: Instructions.Values
+}
+
+export const observe = Effect.fn("InstructionState.observe")(function* (
+  db: DatabaseService,
+  instructions: Instructions.Instructions,
+  sessionID: SessionSchema.ID,
+): Effect.fn.Return<Observation, Instructions.InitializationBlocked> {
+  const [observed, stored] = yield* Effect.all([Instructions.read(instructions), ensure(db, sessionID)], {
+    concurrency: "unbounded",
+  })
+  const result = yield* observeAgainst(observed, stored?.current_values)
+  return {
+    sessionID,
+    initial: !stored,
+    ...result,
+  }
+})
+
+export const commit = Effect.fn("InstructionState.commit")(function* (
+  db: DatabaseService,
+  events: EventV2.Interface,
+  observation: Observation,
+) {
+  if (!observation.initial && Object.keys(observation.delta).length === 0) return
+  yield* events.publish(
+    SessionEvent.InstructionsUpdated,
+    { sessionID: observation.sessionID, delta: observation.delta },
+    {
+      // Initial sync establishes the baseline; unlike later deltas it is not chronological history.
+      ...(observation.initial ? { metadata: { instructions: { initial: true } } } : {}),
+      commit: () => insertBlobs(db, observation.blobs),
+    },
+  )
+})
+
 export const prepare = Effect.fn("InstructionState.prepare")(function* (
  db: DatabaseService,
  events: EventV2.Interface,
  instructions: Instructions.Instructions,
  sessionID: SessionSchema.ID,
 ) {
-  const [observed, stored] = yield* Effect.all([Instructions.read(instructions), ensure(db, sessionID)], {
-    concurrency: "unbounded",
-  })
-  const admission = yield* Instructions.diff(observed, stored?.current_values)
-  if (!stored || Object.keys(admission.delta).length > 0) {
-    yield* events.publish(
-      SessionEvent.InstructionsUpdated,
-      { sessionID, delta: admission.delta },
-      {
-        // Initial sync establishes the baseline; unlike later deltas it is not chronological history.
-        ...(!stored ? { metadata: { instructions: { initial: true } } } : {}),
-        commit: () => insertBlobs(db, admission.blobs),
-      },
-    )
-  }
+  yield* commit(db, events, yield* observe(db, instructions, sessionID))
 })

 export const apply = Effect.fn("InstructionState.apply")(function* (
@@ -97,28 +122,21 @@ export const rebuild = Effect.fn("InstructionState.rebuild")(function* (
  db: DatabaseService,
  sessionID: SessionSchema.ID,
 ) {
-  const folded = fold(yield* instructionEvents(db, sessionID))
-  if (!folded) {
+  const state = yield* stateFromEvents(db, sessionID)
+  if (!state) {
    yield* reset(db, sessionID)
    return undefined
  }
-  const state = {
-    session_id: sessionID,
-    epoch_start: folded.epochStart,
-    through_seq: folded.throughSeq,
-    initial_values: folded.initial,
-    current_values: folded.current,
-  }
  yield* db
    .insert(InstructionStateTable)
    .values(state)
    .onConflictDoUpdate({
      target: InstructionStateTable.session_id,
      set: {
-        epoch_start: folded.epochStart,
-        through_seq: folded.throughSeq,
-        initial_values: folded.initial,
-        current_values: folded.current,
+        epoch_start: state.epoch_start,
+        through_seq: state.through_seq,
+        initial_values: state.initial_values,
+        current_values: state.current_values,
      },
    })
    .run()
@@ -126,13 +144,12 @@ export const rebuild = Effect.fn("InstructionState.rebuild")(function* (
  return state
 })

-export const assemble = Effect.fn("InstructionState.assemble")(function* (
+const assembleState = Effect.fnUntraced(function* (
  db: DatabaseService,
  sessionID: SessionSchema.ID,
  instructions: Instructions.Instructions,
+  state: typeof InstructionStateTable.$inferSelect,
 ) {
-  const state = yield* find(db, sessionID)
-  if (!state) return yield* Effect.die(new Error(`Instruction state not found during assembly: ${sessionID}`))
  const rows = yield* instructionUpdatesAfter(db, sessionID, state.epoch_start)
  const updates = rows.map((row) => ({
    row,
@@ -162,7 +179,49 @@ export const assemble = Effect.fn("InstructionState.assemble")(function* (
      })
    values = Instructions.applyDelta(values, delta)
  }
-  return { initial: Instructions.renderInitial(instructions, valuesAtStart), updates: result }
+  return { initial: Instructions.renderInitial(instructions, valuesAtStart), updates: result, current: values }
+})
+
+export const assemble = Effect.fn("InstructionState.assemble")(function* (
+  db: DatabaseService,
+  sessionID: SessionSchema.ID,
+  instructions: Instructions.Instructions,
+) {
+  const state = yield* find(db, sessionID)
+  if (!state) return yield* Effect.die(new Error(`Instruction state not found during assembly: ${sessionID}`))
+  const assembled = yield* assembleState(db, sessionID, instructions, state)
+  return { initial: assembled.initial, updates: assembled.updates }
+})
+
+export const preview = Effect.fn("InstructionState.preview")(function* (
+  db: DatabaseService,
+  sessionID: SessionSchema.ID,
+  instructions: Instructions.Instructions,
+  observed: Instructions.ReadResult,
+) {
+  const state = yield* readState(db, sessionID)
+  const result = yield* observeAgainst(observed, state?.current_values)
+  const blobs = new Map<Instructions.Hash, Schema.Json>(
+    Object.entries(result.blobs).map(([hash, value]) => [Instructions.Hash.make(hash), value]),
+  )
+  if (!state) {
+    const values = dereference(result.current, blobs)
+    return { initial: Instructions.renderInitial(instructions, values), updates: [], update: "" }
+  }
+  const assembled = yield* assembleState(db, sessionID, instructions, state)
+  return {
+    initial: assembled.initial,
+    updates: assembled.updates,
+    update: Instructions.renderUpdate(instructions, assembled.current, dereferenceDelta(result.delta, blobs)),
+  }
+})
+
+const observeAgainst = Effect.fnUntraced(function* (observed: Instructions.ReadResult, previous?: Instructions.Values) {
+  const admission = yield* Instructions.diff(observed, previous)
+  return {
+    current: Instructions.applyHashDelta(previous ?? {}, admission.delta),
+    ...admission,
+  }
 })

 const find = Effect.fnUntraced(function* (db: DatabaseService, sessionID: SessionSchema.ID) {
@@ -177,7 +236,26 @@ const find = Effect.fnUntraced(function* (db: DatabaseService, sessionID: Sessio
 const ensure = Effect.fnUntraced(function* (db: DatabaseService, sessionID: SessionSchema.ID) {
  const stored = yield* find(db, sessionID)
  if (!stored) return yield* rebuild(db, sessionID)
-  const latest = yield* db
+  const latest = yield* latestRelevantSequence(db, sessionID)
+  if (!latest || latest.seq <= stored.through_seq) return stored
+  return yield* rebuild(db, sessionID)
+})
+
+const readState = Effect.fnUntraced(function* (db: DatabaseService, sessionID: SessionSchema.ID) {
+  const stored = yield* find(db, sessionID)
+  if (!stored) return yield* stateFromEvents(db, sessionID)
+  const latest = yield* latestRelevantSequence(db, sessionID)
+  if (!latest || latest.seq <= stored.through_seq) return stored
+  return yield* stateFromEvents(db, sessionID)
+})
+
+const stateFromEvents = Effect.fnUntraced(function* (db: DatabaseService, sessionID: SessionSchema.ID) {
+  const folded = fold(yield* instructionEvents(db, sessionID))
+  return folded ? foldedState(sessionID, folded) : undefined
+})
+
+const latestRelevantSequence = Effect.fnUntraced(function* (db: DatabaseService, sessionID: SessionSchema.ID) {
+  return yield* db
    .select({ seq: EventTable.seq })
    .from(EventTable)
    .where(and(eq(EventTable.aggregate_id, sessionID), inArray(EventTable.type, relevantEventTypes)))
@@ -185,8 +263,6 @@ const ensure = Effect.fnUntraced(function* (db: DatabaseService, sessionID: Sess
    .limit(1)
    .get()
    .pipe(Effect.orDie)
-  if (!latest || latest.seq <= stored.through_seq) return stored
-  return yield* rebuild(db, sessionID)
 })

 const insertBlobs = Effect.fnUntraced(function* (db: DatabaseService, blobs: Readonly<Record<string, Schema.Json>>) {
@@ -338,3 +414,13 @@ function fold(rows: ReadonlyArray<InstructionEventRow>) {
      : { epochStart: row.seq, throughSeq: row.seq, initial: current, current }
  }, undefined)
 }
+
+function foldedState(sessionID: SessionSchema.ID, folded: NonNullable<ReturnType<typeof fold>>) {
+  return {
+    session_id: sessionID,
+    epoch_start: folded.epochStart,
+    through_seq: folded.throughSeq,
+    initial_values: folded.initial,
+    current_values: folded.current,
+  }
+}
@@ -0,0 +1,119 @@
+export * as SessionModelRequest from "./model-request"
+
+import { LLM, Message, SystemPart, type LLMRequest } from "@opencode-ai/ai"
+import { SessionError } from "@opencode-ai/schema/session-error"
+import { Context, Effect, Layer } from "effect"
+import { makeLocationNode } from "../effect/app-node"
+import { PluginHooks } from "../plugin/hooks"
+import { ToolRegistry } from "../tool/registry"
+import { SessionContext } from "./context"
+import { SessionModelHeaders } from "./model-headers"
+import { MAX_STEPS_PROMPT } from "./runner/max-steps"
+import PROMPT_DEFAULT from "./runner/prompt/base.txt"
+import { toLLMMessages } from "./runner/to-llm-message"
+
+type ToolCallResolution =
+  | { readonly type: "reject"; readonly error: SessionError.Error }
+  | { readonly type: "settle"; readonly settle: ToolRegistry.Materialization["settle"] }
+
+interface Prepared {
+  readonly request: LLMRequest
+  readonly resolveToolCall: (name: string) => ToolCallResolution
+}
+
+interface PrepareInput {
+  readonly context: SessionContext.Loaded
+  readonly step: number
+}
+
+/**
+ * Builds an outbound model request and captures the tool-call capability that
+ * must remain paired with it. It does not execute the request or mutate
+ * Session state.
+ */
+export interface Interface {
+  /** Builds one outbound model request and its matching tool-call capability. */
+  readonly prepare: (input: PrepareInput) => Effect.Effect<Prepared>
+}
+
+/** Location-scoped outbound model-request preparation. */
+export class Service extends Context.Service<Service, Interface>()("@opencode/v2/SessionModelRequest") {}
+
+const layer = Layer.effect(
+  Service,
+  Effect.gen(function* () {
+    const hooks = yield* PluginHooks.Service
+    const registry = yield* ToolRegistry.Service
+
+    const prepare = Effect.fn("SessionModelRequest.prepare")(function* (input: PrepareInput) {
+      const session = input.context.session
+      const agent = input.context.agent
+      const resolved = input.context.model
+      const model = resolved.model
+      const providerMetadataKey = model.route.providerMetadataKey ?? model.provider
+      const stepLimitReached = agent.info.steps !== undefined && input.step >= agent.info.steps
+      const executableTools = stepLimitReached ? undefined : yield* registry.materialize(agent.info.permissions)
+      const promptCacheKey = /^ses_[0-9a-f]{64}$/.test(session.id) ? session.id.slice(4) : session.id
+      const system = [agent.info.system ? agent.info.system : PROMPT_DEFAULT, input.context.initial]
+        .filter((part) => part.length > 0)
+        .map(SystemPart.make)
+      const history = toLLMMessages(input.context.messages, resolved.ref, providerMetadataKey)
+      const messages = stepLimitReached ? [...history, Message.assistant(MAX_STEPS_PROMPT)] : history
+      const toolDefinitions = executableTools?.definitions ?? []
+      const toolsByName = new Map(toolDefinitions.map((tool) => [tool.name, tool]))
+      // Hooks may reshape available definitions but cannot advertise tools omitted by permissions or the Step limit.
+      const contextEvent = yield* hooks.trigger("session", "context", {
+        sessionID: session.id,
+        agent: agent.id,
+        model: resolved.ref,
+        system,
+        messages,
+        tools: Object.fromEntries(
+          toolDefinitions.map((tool) => [tool.name, { description: tool.description, input: { ...tool.inputSchema } }]),
+        ),
+      })
+      const hookedTools = Object.entries(contextEvent.tools).flatMap(([name, tool]) => {
+        const registered = toolsByName.get(name)
+        return registered
+          ? [Object.assign({}, registered, { description: tool.description, inputSchema: tool.input })]
+          : []
+      })
+      const request = LLM.request({
+        model,
+        http: {
+          headers: SessionModelHeaders.make(session),
+        },
+        providerOptions: { openai: { promptCacheKey } },
+        system: contextEvent.system,
+        messages: contextEvent.messages,
+        tools: hookedTools,
+        toolChoice: stepLimitReached ? "none" : undefined,
+      })
+      const resolveToolCall = (name: string): ToolCallResolution => {
+        if (!executableTools)
+          return {
+            type: "reject",
+            error: { type: "tool.execution", message: "Tools are disabled after the maximum agent steps" },
+          }
+        if (toolsByName.has(name) && !Object.hasOwn(contextEvent.tools, name))
+          return {
+            type: "reject",
+            error: { type: "tool.execution", message: `Tool is not available for this request: ${name}` },
+          }
+        return { type: "settle", settle: executableTools.settle }
+      }
+      return {
+        request,
+        resolveToolCall,
+      }
+    })
+
+    return Service.of({ prepare })
+  }),
+)
+
+export const node = makeLocationNode({
+  service: Service,
+  layer,
+  deps: [PluginHooks.node, ToolRegistry.node],
+})
@@ -1,16 +1,6 @@
 export * as SessionRunnerLLM from "./llm"

-import {
-  LLM,
-  LLMClient,
-  LLMError,
-  LLMEvent,
-  Message,
-  SystemPart,
-  isContextOverflowFailure,
-  type ProviderErrorEvent,
-} from "@opencode-ai/ai"
-import type { SessionHooks } from "@opencode-ai/plugin/v2/effect/session"
+import { LLMClient, LLMError, LLMEvent, isContextOverflowFailure, type ProviderErrorEvent } from "@opencode-ai/ai"
 import { SessionError } from "@opencode-ai/schema/session-error"
 import { Money } from "@opencode-ai/schema/money"
 import { Cause, Effect, Exit, Fiber, FiberSet, Layer, Option, Semaphore, Stream } from "effect"
@@ -19,30 +9,25 @@ import { EventV2 } from "../../event"
 import { ModelV2 } from "../../model"
 import { PermissionV2 } from "../../permission"
 import { QuestionTool } from "../../tool/question"
-import { ToolRegistry } from "../../tool/registry"
 import { ToolOutputStore } from "../../tool-output-store"
 import { InstructionState } from "../instruction-state"
 import { SessionCompaction } from "../compaction"
 import { SessionContext } from "../context"
 import { SessionEvent } from "../event"
 import { SessionPending } from "../pending"
+import { SessionModelRequest } from "../model-request"
 import { SessionMessage } from "../message"
 import { SessionSchema } from "../schema"
 import { SessionStore } from "../store"
 import { SessionTitle } from "../title"
 import { Service } from "./index"
 import { createLLMEventPublisher } from "./publish-llm-event"
-import { toLLMMessages } from "./to-llm-message"
-import { MAX_STEPS_PROMPT } from "./max-steps"
-import PROMPT_DEFAULT from "./prompt/base.txt"
 import { Snapshot } from "../../snapshot"
 import { makeLocationNode } from "../../effect/app-node"
 import { llmClient } from "../../effect/app-node-platform"
 import { StepFailedError } from "../error"
 import { toSessionError } from "../to-session-error"
 import { SessionRunnerRetry } from "./retry"
-import { PluginHooks } from "../../plugin/hooks"
-import { SessionModelHeaders } from "../model-headers"

 type StepTokens = {
  readonly input: number
@@ -68,20 +53,14 @@ export function calculateCost(costs: ModelV2.Info["cost"], tokens: StepTokens) {
  )
 }

-/**
- * Runs one durable coding-agent Session until it settles. Each step reloads projected history,
- * materializes tools, makes one model request, and settles local calls before continuation.
- */
-
 const layer = Layer.effect(
  Service,
  Effect.gen(function* () {
    const events = yield* EventV2.Service
    const llm = yield* LLMClient.Service
-    const tools = yield* ToolRegistry.Service
-    const hooks = yield* PluginHooks.Service
    const store = yield* SessionStore.Service
    const context = yield* SessionContext.Service
+    const modelRequests = yield* SessionModelRequest.Service
    const snapshots = yield* Snapshot.Service
    const db = (yield* Database.Service).db
    const compaction = yield* SessionCompaction.Service
@@ -146,59 +125,18 @@ const layer = Layer.effect(
      const loaded = yield* context.load(selected)
      const session = loaded.session
      const agent = loaded.agent
-      const agentInfo = agent.info
      const resolved = loaded.model
      const model = resolved.model
-      const providerMetadataKey = model.route.providerMetadataKey ?? model.provider
      const compactionInput = { session, messages: loaded.messages, model }
      if (compaction.required(compactionInput) && !(yield* SessionPending.compaction(db, session.id))) {
        const compacted = yield* compaction.compact(compactionInput)
        if (compacted.status === "completed") return { _tag: "RestartAfterCompaction", step: currentStep } as const
        return yield* new StepFailedError({ error: compacted.error })
      }
-      const isLastStep = agentInfo.steps !== undefined && currentStep >= agentInfo.steps
-      const toolMaterialization = isLastStep ? undefined : yield* tools.materialize(agentInfo.permissions)
-      const promptCacheKey = /^ses_[0-9a-f]{64}$/.test(session.id) ? session.id.slice(4) : session.id
-      const request = LLM.request({
-        model,
-        http: {
-          headers: SessionModelHeaders.make(session),
-        },
-        providerOptions: { openai: { promptCacheKey } },
-        system: [agentInfo.system ? agentInfo.system : PROMPT_DEFAULT, loaded.initial]
-          .filter((part): part is string => part !== undefined && part.length > 0)
-          .map(SystemPart.make),
-        messages: [
-          ...toLLMMessages(loaded.messages, resolved.ref, providerMetadataKey),
-          ...(isLastStep ? [Message.assistant(MAX_STEPS_PROMPT)] : []),
-        ],
-        tools: toolMaterialization?.definitions ?? [],
-        toolChoice: isLastStep ? "none" : undefined,
+      const prepared = yield* modelRequests.prepare({
+        context: loaded,
+        step: currentStep,
      })
-      const availableTools = new Map(request.tools.map((tool) => [tool.name, tool]))
-      const contextEvent: SessionHooks["context"] = {
-        sessionID: session.id,
-        agent: agent.id,
-        model: resolved.ref,
-        system: [...request.system],
-        messages: [...request.messages],
-        tools: Object.fromEntries(
-          request.tools.map((tool) => [tool.name, { description: tool.description, input: { ...tool.inputSchema } }]),
-        ),
-      }
-      // Plugins may reshape the draft but cannot advertise tools excluded by
-      // permissions, registration state, or the selected agent's step limit.
-      yield* hooks.trigger("session", "context", contextEvent)
-      const hookedRequest = LLM.updateRequest(request, {
-        system: contextEvent.system,
-        messages: contextEvent.messages,
-        tools: Object.entries(contextEvent.tools).flatMap(([name, tool]) => {
-          const registered = availableTools.get(name)
-          if (!registered) return []
-          return [{ ...registered, description: tool.description, inputSchema: tool.input }]
-        }),
-      })
-      const advertisedTools = new Set(hookedRequest.tools.map((tool) => tool.name))
      const toolFibers = yield* FiberSet.make<void, ToolOutputStore.Error>()
      const ownedToolFibers: Array<Fiber.Fiber<void, ToolOutputStore.Error>> = []
      let needsContinuation = false
@@ -209,7 +147,7 @@ const layer = Layer.effect(
        // The selected catalog identity, not model.id: route-level ids are provider API
        // model ids (for example gpt-5.5-fast resolves to api id gpt-5.5).
        model: resolved.ref,
-        providerMetadataKey,
+        providerMetadataKey: model.route.providerMetadataKey ?? model.provider,
        snapshot: startSnapshot,
        assistantMessageID,
      })
@@ -219,7 +157,7 @@ const layer = Layer.effect(
      const serialized = <A, E, R>(effect: Effect.Effect<A, E, R>) => publication.withPermit(effect)
      const publish = (event: LLMEvent, error?: SessionError.Error) => serialized(publisher.publish(event, error))
      let overflowFailure: ProviderErrorEvent | undefined
-      const providerStream = llm.stream(hookedRequest).pipe(
+      const providerStream = llm.stream(prepared.request).pipe(
        Stream.runForEach((event) =>
          Effect.gen(function* () {
            if (overflowFailure || publisher.hasProviderError()) return
@@ -231,15 +169,9 @@ const layer = Layer.effect(
            }
            yield* publish(event)
            if (event.type !== "tool-call" || event.providerExecuted) return
-            if (!toolMaterialization || (availableTools.has(event.name) && !advertisedTools.has(event.name))) {
-              yield* serialized(
-                publisher.failUnsettledTools({
-                  type: "tool.execution",
-                  message: toolMaterialization
-                    ? `Tool is not available for this request: ${event.name}`
-                    : "Tools are disabled after the maximum agent steps",
-                }),
-              )
+            const tool = prepared.resolveToolCall(event.name)
+            if (tool.type === "reject") {
+              yield* serialized(publisher.failUnsettledTools(tool.error))
              return
            }
            needsContinuation = true
@@ -247,7 +179,7 @@ const layer = Layer.effect(
            ownedToolFibers.push(
              yield* Effect.uninterruptibleMask((restore) =>
                restore(
-                  toolMaterialization.settle({
+                  tool.settle({
                    sessionID: session.id,
                    agent: agent.id,
                    messageID: assistantMessageID,
@@ -337,11 +269,7 @@ const layer = Layer.effect(
          const llmFailure = streamFailure instanceof LLMError ? streamFailure : undefined
          if (llmFailure && !publisher.hasProviderError()) {
            const error = toSessionError(llmFailure)
-            if (
-              SessionRunnerRetry.isRetryable(llmFailure) &&
-              !publisher.hasRetryEvidence() &&
-              (agentInfo.steps === undefined || currentStep < agentInfo.steps)
-            ) {
+            if (SessionRunnerRetry.isRetryable(llmFailure) && !publisher.hasRetryEvidence()) {
              return yield* new SessionRunnerRetry.RetryableFailure({
                cause: llmFailure,
                assistantMessageID: yield* publisher.startAssistant(),
@@ -457,7 +385,7 @@ const layer = Layer.effect(
          Effect.tapError((error) =>
            error instanceof SessionRunnerRetry.RetryableFailure
              ? Effect.sync(() => {
-                  currentStep = error.step + 1
+                  currentStep = error.step
                  assistantMessageID = error.assistantMessageID
                  currentPromotion = undefined
                })
@@ -571,9 +499,8 @@ export const node = makeLocationNode({
  deps: [
    EventV2.node,
    llmClient,
-    ToolRegistry.node,
-    PluginHooks.node,
    SessionContext.node,
+    SessionModelRequest.node,
    SessionStore.node,
    SessionCompaction.node,
    SessionTitle.node,
@@ -8,7 +8,6 @@ import { Global } from "../global"
 import { makeGlobalNode } from "../effect/app-node"
 import { httpClient } from "../effect/app-node-platform"
 import { AbsolutePath } from "../schema"
-import { Hash } from "../util/hash"

 const skillConcurrency = 4
 const fileConcurrency = 8
@@ -111,7 +110,7 @@ const layer = Layer.effect(
        )
        if (!data) return []

-        const sourceRoot = path.resolve(global.cache, "skills", Hash.fast(base))
+        const sourceRoot = path.resolve(global.cache, "skills", Bun.hash(base).toString(16))
        return yield* Effect.forEach(
          data.skills.flatMap((skill) => {
            if (!isSafeSegment(skill.name)) {
@@ -1,4 +1,4 @@
-export * as SkillGuidance from "./guidance"
+export * as SkillInstructions from "./instructions"

 import { makeLocationNode } from "../effect/app-node"
 import { Context, Effect, Layer, Schema } from "effect"
@@ -60,7 +60,7 @@ export interface Interface {
  readonly load: (agent: AgentV2.Selection) => Effect.Effect<Instructions.Instructions>
 }

-export class Service extends Context.Service<Service, Interface>()("@opencode/v2/SkillGuidance") {}
+export class Service extends Context.Service<Service, Interface>()("@opencode/v2/SkillInstructions") {}

 const layer = Layer.effect(
  Service,
@@ -68,7 +68,7 @@ const layer = Layer.effect(
    const skills = yield* SkillV2.Service

    return Service.of({
-      load: Effect.fn("SkillGuidance.load")(function* (selection) {
+      load: Effect.fn("SkillInstructions.load")(function* (selection) {
        const agent = selection.info
        if (!agent) return Instructions.empty
        const permitted = SkillV2.available(yield* skills.list(), agent)
@@ -1,14 +1,14 @@
 export * as State from "./state"

-import { Context, Effect, Scope, Semaphore } from "effect"
+import { Clock, Context, Deferred, Effect, Scope, Semaphore } from "effect"

 /**
 * A replayable transform applied to a draft during reload.
 *
 * Domain drafts expose readable and writable state while preserving concise
- * plugin/config code. Transforms may perform Effects before returning.
+ * plugin/config code. Transforms synchronously rebuild derived state.
 */
-type TransformCallback<DraftApi> = (draft: DraftApi) => Effect.Effect<void> | void
+type TransformCallback<DraftApi> = (draft: DraftApi) => void
 export type MakeDraft<State, DraftApi> = (state: State) => DraftApi

 export interface Registration {
@@ -34,6 +34,7 @@ type Batch = {
 const CurrentBatch = Context.Reference<Batch | undefined>("@opencode/State/CurrentBatch", {
  defaultValue: () => undefined,
 })
+const reloadDebounce = 500

 export function batch<A, E, R>(effect: Effect.Effect<A, E, R>) {
  return Effect.gen(function* () {
@@ -73,6 +74,10 @@ export interface Interface<State, DraftApi> extends Transformable<DraftApi> {
 export function create<State, DraftApi>(options: Options<State, DraftApi>): Interface<State, DraftApi> {
  let state = options.initial()
  let transforms: { run: TransformCallback<DraftApi> }[] = []
+  let generation = 0
+  let requestedAt = 0
+  let running = false
+  let waiters: { generation: number; done: Deferred.Deferred<void> }[] = []
  const semaphore = Semaphore.makeUnsafe(1)

  const commit = Effect.fn("State.commit")(function* (next: State) {
@@ -82,9 +87,8 @@ export function create<State, DraftApi>(options: Options<State, DraftApi>): Inte
  })

  const apply = (transform: TransformCallback<DraftApi>, draft: DraftApi) =>
-    Effect.suspend(() => {
-      const result = transform(draft)
-      return Effect.isEffect(result) ? Effect.asVoid(result).pipe(Effect.orDie) : Effect.void
+    Effect.sync(() => {
+      transform(draft)
    })

  const materialize = Effect.fnUntraced(function* () {
@@ -97,7 +101,39 @@ export function create<State, DraftApi>(options: Options<State, DraftApi>): Inte
    yield* commit(next)
  })

-  const reload = () => semaphore.withPermit(materialize())
+  const materializeReload = () => semaphore.withPermit(materialize())
+
+  const rebuild = (): Effect.Effect<void> =>
+    Effect.gen(function* () {
+      const clock = yield* Clock.Clock
+      const remaining = requestedAt + reloadDebounce - clock.currentTimeMillisUnsafe()
+      if (remaining > 0) yield* Effect.sleep(remaining)
+      if (clock.currentTimeMillisUnsafe() < requestedAt + reloadDebounce) return yield* rebuild()
+
+      const target = generation
+      const exit = yield* materializeReload().pipe(Effect.exit)
+      const completed = waiters.filter((waiter) => waiter.generation <= target)
+      waiters = waiters.filter((waiter) => waiter.generation > target)
+      yield* Effect.forEach(completed, (waiter) => Deferred.done(waiter.done, exit), {
+        concurrency: "unbounded",
+        discard: true,
+      })
+      if (generation > target) return yield* rebuild()
+      running = false
+    })
+
+  const reload = Effect.fnUntraced(function* () {
+    const done = Deferred.makeUnsafe<void>()
+    const clock = yield* Clock.Clock
+    generation++
+    requestedAt = clock.currentTimeMillisUnsafe()
+    waiters.push({ generation, done })
+    if (!running) {
+      running = true
+      yield* rebuild().pipe(Effect.forkDetach)
+    }
+    return yield* Deferred.await(done)
+  })

  const result: Interface<State, DraftApi> = {
    get: () => state,
@@ -117,7 +153,7 @@ export function create<State, DraftApi>(options: Options<State, DraftApi>): Inte
                return Effect.gen(function* () {
                  const batch = yield* CurrentBatch
                  if (batch?.active) {
-                    batch.reloads.add(reload)
+                    batch.reloads.add(materializeReload)
                    return
                  }
                  yield* materialize()
@@ -132,8 +168,8 @@ export function create<State, DraftApi>(options: Options<State, DraftApi>): Inte
          )
          yield* Scope.addFinalizer(scope, dispose)
          const batch = yield* CurrentBatch
-          if (batch?.active) batch.reloads.add(reload)
-          else yield* reload()
+          if (batch?.active) batch.reloads.add(materializeReload)
+          else yield* materializeReload()
          return { dispose }
        }),
      )
@@ -6,7 +6,6 @@ import { ToolFailure } from "@opencode-ai/ai"
 import { Effect, Schema } from "effect"
 import { FileSystem } from "../filesystem"
 import { FSUtil } from "../fs-util"
-import { Image } from "../image"
 import { Location } from "../location"
 import { LocationMutation } from "../location-mutation"
 import { PermissionV2 } from "../permission"
@@ -35,7 +34,6 @@ export const Plugin = {
  effect: Effect.fn("ReadTool.Plugin")(function* (ctx: PluginContext) {
    const reader = yield* ReadToolFileSystem.Service
    const mutation = yield* LocationMutation.Service
-    const image = yield* Image.Service
    const permission = yield* PermissionV2.Service
    const sessionInstructions = yield* SessionInstructions.Service
    const fs = yield* FSUtil.Service
@@ -50,6 +48,12 @@ export const Plugin = {
              "Read a text file or supported image, page through a large UTF-8 text file by line offset, or list a directory page. Relative paths resolve from the current location; absolute paths inside it are accepted, while external absolute paths require external_directory approval.",
            input: Input,
            output: Output,
+            structured: Schema.toEncoded(Output),
+            // Image base64 reaches the model through content items (normalized generically
+            // at tool settlement); persisting a second copy in structured would store the
+            // original unresized bytes in the message row.
+            toStructuredOutput: ({ output }) =>
+              "encoding" in output && output.encoding === "base64" ? { ...output, content: "" } : output,
            toModelOutput: ({ input, output }) => {
              if (!("encoding" in output) || output.encoding !== "base64" || !SUPPORTED_IMAGE_MIMES.has(output.mime))
                return []
@@ -117,21 +121,14 @@ export const Plugin = {
                  Effect.catch(() => Effect.void),
                  Effect.catchDefect(() => Effect.void),
                )
-                if ("encoding" in content && content.encoding === "base64" && SUPPORTED_IMAGE_MIMES.has(content.mime)) {
-                  return yield* image
-                    .normalize(resource, { ...content, encoding: "base64" })
-                    .pipe(Effect.catchTag("Image.ResizerUnavailableError", () => Effect.succeed(content)))
-                }
-                if ("encoding" in content && content.encoding === "base64")
+                if ("encoding" in content && content.encoding === "base64" && !SUPPORTED_IMAGE_MIMES.has(content.mime))
                  return yield* Effect.fail(new ReadToolFileSystem.BinaryFileError({ resource }))
                return content
              }).pipe(
                Effect.mapError((error) => {
                  const message =
                    error instanceof ReadToolFileSystem.BinaryFileError ||
-                    error instanceof ReadToolFileSystem.MediaIngestLimitError ||
-                    error instanceof Image.DecodeError ||
-                    error instanceof Image.SizeError
+                    error instanceof ReadToolFileSystem.MediaIngestLimitError
                      ? error.message
                      : `Unable to read ${input.path}`
                  return new ToolFailure({ message, error })
@@ -3,6 +3,7 @@ export * as ToolRegistry from "./registry"
 import { ToolOutput, type ToolCall, type ToolDefinition, type ToolResultValue } from "@opencode-ai/ai"
 import { Context, Effect, Layer, Scope } from "effect"
 import type { AgentV2 } from "../agent"
+import { Image } from "../image"
 import { PermissionV2 } from "../permission"
 import { SessionMessage } from "../session/message"
 import { SessionSchema } from "../session/schema"
@@ -57,6 +58,40 @@ const registryLayer = Layer.effect(
  Effect.gen(function* () {
    const resources = yield* ToolOutputStore.Service
    const toolHooks = yield* ToolHooks.Service
+    const image = yield* Image.Service
+
+    type NormalizedItem = ToolOutput["content"][number] | "decode" | "size"
+    const normalizeImages = Effect.fn("ToolRegistry.normalizeImages")(function* (content: ToolOutput["content"]) {
+      const normalized = yield* Effect.forEach(content, (item): Effect.Effect<NormalizedItem> => {
+        if (item.type !== "file" || !item.mime.startsWith("image/")) return Effect.succeed(item)
+        // RFC 2397 permits parameters between the mime and ";base64".
+        const base64 = /^data:[^,]*;base64,(.*)$/s.exec(item.uri)?.[1]
+        if (base64 === undefined) return Effect.succeed(item)
+        const resource = item.name ?? `${item.mime} tool output`
+        return image
+          .normalize(resource, { uri: resource, content: base64, encoding: "base64", mime: item.mime })
+          .pipe(
+            Effect.map((result) => ({
+              ...item,
+              uri: `data:${result.mime};base64,${result.content}`,
+              mime: result.mime,
+            })),
+            Effect.catchTag("Image.ResizerUnavailableError", () => Effect.succeed(item)),
+            Effect.catchTag("Image.DecodeError", () => Effect.succeed("decode" as const)),
+            Effect.catchTag("Image.SizeError", () => Effect.succeed("size" as const)),
+          )
+      })
+      const note = (reason: "decode" | "size", text: string) => {
+        const count = normalized.filter((item) => item === reason).length
+        if (count === 0) return []
+        return [{ type: "text" as const, text: `[${count} image${count === 1 ? "" : "s"} omitted: ${text}]` }]
+      }
+      return [
+        ...normalized.filter((item) => typeof item !== "string"),
+        ...note("decode", "could not be decoded."),
+        ...note("size", "could not be resized below the image size limit."),
+      ]
+    })
    type Registration = {
      readonly tool: AnyTool
      readonly name: string
@@ -84,10 +119,11 @@ const registryLayer = Layer.effect(
          agent: input.agent,
          messageID: input.messageID,
          callID: input.call.id,
-          progress: (update) =>
-            input.progress?.({
-              structured: update.structured,
-              content: (update.content ?? []).map((part) =>
+          progress: (update) => {
+            const progress = input.progress
+            if (!progress) return Effect.void
+            return normalizeImages(
+              (update.content ?? []).map((part) =>
                part.type === "text"
                  ? { type: "text" as const, text: part.text }
                  : {
@@ -97,7 +133,8 @@ const registryLayer = Layer.effect(
                      name: part.name,
                    },
              ),
-            }) ?? Effect.void,
+            ).pipe(Effect.flatMap((content) => progress({ structured: update.structured, content })))
+          },
        },
      ).pipe(
        Effect.map((output) => ({ output })),
@@ -115,7 +152,7 @@ const registryLayer = Layer.effect(
        const bounded = yield* resources.bound({
          sessionID: input.sessionID,
          callID: input.call.id,
-          output: pending.output,
+          output: { structured: pending.output.structured, content: yield* normalizeImages(pending.output.content) },
        })
        const result = ToolOutput.toResultValue(bounded.output)
        settlement =
@@ -232,11 +269,11 @@ function whollyDisabled(action: string, rules: PermissionV2.Ruleset) {
 export const node = makeLocationNode({
  service: Service,
  layer,
-  deps: [ToolOutputStore.node, ToolHooks.node],
+  deps: [ToolOutputStore.node, ToolHooks.node, Image.node],
 })

 export const toolsNode = makeLocationNode({
  service: Tools.Service,
  layer,
-  deps: [ToolOutputStore.node, ToolHooks.node],
+  deps: [ToolOutputStore.node, ToolHooks.node, Image.node],
 })
@@ -17,6 +17,7 @@ export const name = "shell"
 export const DEFAULT_TIMEOUT_MS = 2 * 60 * 1_000
 export const MAX_TIMEOUT_MS = 10 * 60 * 1_000
 export const MAX_CAPTURE_BYTES = 1024 * 1024
+export const PROGRESS_LINES = 25

 const BACKGROUND_STARTED = "The command was moved to the background."
 const BACKGROUND_INSTRUCTION =
@@ -210,6 +211,23 @@ export const Plugin = {
                  }
                })

+                const captureProgress = Effect.fn("ShellTool.captureProgress")(function* () {
+                  const latest = yield* shell.output(info.id, { cursor: Number.MAX_SAFE_INTEGER })
+                  const start = Math.max(0, latest.size - MAX_CAPTURE_BYTES)
+                  const page = yield* shell.output(info.id, { cursor: start, limit: MAX_CAPTURE_BYTES })
+                  const trailingNewline = page.output.endsWith("\n")
+                  const lines = trailingNewline ? page.output.split("\n").slice(0, -1) : page.output.split("\n")
+                  const truncated = start > 0 || lines.length > PROGRESS_LINES
+                  const output = lines.slice(-PROGRESS_LINES).join("\n") + (trailingNewline ? "\n" : "")
+                  const notice = truncated
+                    ? `[output truncated; showing last ${PROGRESS_LINES} lines. Full output saved to: ${info.file}]\n\n`
+                    : ""
+                  return {
+                    output: `${notice}${output || "(no output)"}`,
+                    truncated,
+                  }
+                })
+
                const settleShell = Effect.fn("ShellTool.settleShell")(function* () {
                  const final = yield* shell.wait(info.id)

@@ -258,7 +276,7 @@ export const Plugin = {

                const progress = yield* Effect.sleep("1 second").pipe(
                  Effect.andThen(
-                    captureShell().pipe(
+                    captureProgress().pipe(
                      Effect.flatMap((capture) =>
                        context.progress({
                          structured: { truncated: capture.truncated },
@@ -4,6 +4,7 @@ import { ToolFailure } from "@opencode-ai/ai"
 import type { Context as PluginContext } from "@opencode-ai/plugin/v2/effect/plugin"
 import { Effect, Schema, Scope } from "effect"
 import { AgentV2 } from "../agent"
+import { Config } from "../config"
 import { PluginRuntime } from "../plugin/runtime"
 import { PermissionV2 } from "../permission"
 import { SessionSchema } from "../session/schema"
@@ -43,6 +44,7 @@ export const Plugin = {
  effect: Effect.fn("SubagentTool.Plugin")(function* (ctx: PluginContext) {
    const runtime = yield* PluginRuntime.Service
    const agents = yield* AgentV2.Service
+    const config = yield* Config.Service
    const permission = yield* PermissionV2.Service
    const scope = yield* Scope.Scope

@@ -123,6 +125,23 @@ export const Plugin = {
                      (error) => new ToolFailure({ message: `Parent session not found: ${context.sessionID}`, error }),
                    ),
                  )
+                let current = parent
+                let depth = 0
+                while (current.parentID) {
+                  depth++
+                  current = yield* runtime.session
+                    .get(current.parentID)
+                    .pipe(
+                      Effect.mapError(
+                        (error) => new ToolFailure({ message: `Parent session not found: ${current.parentID}`, error }),
+                      ),
+                    )
+                }
+                const limit = Config.latest(yield* config.entries(), "experimental")?.subagent_depth ?? 1
+                if (depth >= limit)
+                  return yield* new ToolFailure({
+                    message: `Subagent depth limit reached (${limit}). Increase "experimental.subagent_depth" to allow nested subagents.`,
+                  })
                const agent = yield* agents.resolve(input.agent)
                if (agent === undefined) return yield* new ToolFailure({ message: `Unknown agent: ${input.agent}` })
                if (agent.mode === "primary")
@@ -1,50 +0,0 @@
-import { dlopen, read, type Pointer } from "bun:ffi"
-import { existsSync } from "node:fs"
-
-export type LockResult =
-  | { readonly acquired: true }
-  | { readonly acquired: false; readonly held: true }
-  | { readonly acquired: false; readonly held: false; readonly code: number }
-
-const LOCK_EX = 2
-const LOCK_NB = 4
-const DARWIN_EWOULDBLOCK = 35
-const LINUX_EWOULDBLOCK = 11
-
-export function lockDarwin(fd: number): LockResult {
-  const library = dlopen("/usr/lib/libSystem.B.dylib", {
-    flock: { args: ["i32", "i32"], returns: "i32" },
-    __error: { args: [], returns: "ptr" },
-  })
-  try {
-    const result = library.symbols.flock(fd, LOCK_EX | LOCK_NB)
-    const code = result === 0 ? 0 : errorCode(library.symbols.__error())
-    if (result === 0) return { acquired: true }
-    if (code === DARWIN_EWOULDBLOCK) return { acquired: false, held: true }
-    return { acquired: false, held: false, code }
-  } finally {
-    library.close()
-  }
-}
-
-export function lockLinux(fd: number): LockResult {
-  const musl = `/lib/libc.musl-${process.arch === "arm64" ? "aarch64" : "x86_64"}.so.1`
-  const library = dlopen(existsSync(musl) ? musl : "libc.so.6", {
-    flock: { args: ["i32", "i32"], returns: "i32" },
-    __errno_location: { args: [], returns: "ptr" },
-  })
-  try {
-    const result = library.symbols.flock(fd, LOCK_EX | LOCK_NB)
-    const code = result === 0 ? 0 : errorCode(library.symbols.__errno_location())
-    if (result === 0) return { acquired: true }
-    if (code === LINUX_EWOULDBLOCK) return { acquired: false, held: true }
-    return { acquired: false, held: false, code }
-  } finally {
-    library.close()
-  }
-}
-
-function errorCode(pointer: Pointer | null) {
-  if (pointer === null) throw new Error("Failed to read process lock error code")
-  return read.i32(pointer, 0)
-}
@@ -1,43 +0,0 @@
-import { dlopen, getInt32 } from "node:ffi"
-
-export type LockResult =
-  | { readonly acquired: true }
-  | { readonly acquired: false; readonly held: true }
-  | { readonly acquired: false; readonly held: false; readonly code: number }
-
-const LOCK_EX = 2
-const LOCK_NB = 4
-const DARWIN_EWOULDBLOCK = 35
-const LINUX_EWOULDBLOCK = 11
-
-export function lockDarwin(fd: number): LockResult {
-  const library = dlopen("/usr/lib/libSystem.B.dylib", {
-    flock: { arguments: ["int32", "int32"], return: "int32" },
-    __error: { arguments: [], return: "pointer" },
-  })
-  try {
-    const result = library.functions.flock(fd, LOCK_EX | LOCK_NB)
-    const code = result === 0 ? 0 : getInt32(library.functions.__error(), 0)
-    if (result === 0) return { acquired: true }
-    if (code === DARWIN_EWOULDBLOCK) return { acquired: false, held: true }
-    return { acquired: false, held: false, code }
-  } finally {
-    library.lib.close()
-  }
-}
-
-export function lockLinux(fd: number): LockResult {
-  const library = dlopen("libc.so.6", {
-    flock: { arguments: ["int32", "int32"], return: "int32" },
-    __errno_location: { arguments: [], return: "pointer" },
-  })
-  try {
-    const result = library.functions.flock(fd, LOCK_EX | LOCK_NB)
-    const code = result === 0 ? 0 : getInt32(library.functions.__errno_location(), 0)
-    if (result === 0) return { acquired: true }
-    if (code === LINUX_EWOULDBLOCK) return { acquired: false, held: true }
-    return { acquired: false, held: false, code }
-  } finally {
-    library.lib.close()
-  }
-}
@@ -1,5 +1,5 @@
-import { lockDarwin, lockLinux, type LockResult } from "#process-lock-ffi"
-import { closeSync, mkdirSync, openSync } from "node:fs"
+import { dlopen, read, type Pointer } from "bun:ffi"
+import { closeSync, existsSync, mkdirSync, openSync } from "node:fs"
 import { connect, createServer, type Server, type Socket } from "node:net"
 import path from "node:path"
 import { Effect, Schema } from "effect"
@@ -76,12 +76,60 @@ export namespace ProcessLock {
  })
 }

-function lock(fd: number): LockResult {
+type Result =
+  | { readonly acquired: true }
+  | { readonly acquired: false; readonly held: true }
+  | { readonly acquired: false; readonly held: false; readonly code: number }
+
+const LOCK_EX = 2
+const LOCK_NB = 4
+const DARWIN_EWOULDBLOCK = 35
+const LINUX_EWOULDBLOCK = 11
+
+function lock(fd: number): Result {
  if (process.platform === "darwin") return lockDarwin(fd)
  if (process.platform === "linux") return lockLinux(fd)
  throw new Error(`Unsupported process lock platform: ${process.platform}`)
 }

+function lockDarwin(fd: number): Result {
+  const library = dlopen("/usr/lib/libSystem.B.dylib", {
+    flock: { args: ["i32", "i32"], returns: "i32" },
+    __error: { args: [], returns: "ptr" },
+  })
+  try {
+    const result = library.symbols.flock(fd, LOCK_EX | LOCK_NB)
+    const code = result === 0 ? 0 : errorCode(library.symbols.__error())
+    if (result === 0) return { acquired: true }
+    if (code === DARWIN_EWOULDBLOCK) return { acquired: false, held: true }
+    return { acquired: false, held: false, code }
+  } finally {
+    library.close()
+  }
+}
+
+function lockLinux(fd: number): Result {
+  const musl = `/lib/libc.musl-${process.arch === "arm64" ? "aarch64" : "x86_64"}.so.1`
+  const library = dlopen(existsSync(musl) ? musl : "libc.so.6", {
+    flock: { args: ["i32", "i32"], returns: "i32" },
+    __errno_location: { args: [], returns: "ptr" },
+  })
+  try {
+    const result = library.symbols.flock(fd, LOCK_EX | LOCK_NB)
+    const code = result === 0 ? 0 : errorCode(library.symbols.__errno_location())
+    if (result === 0) return { acquired: true }
+    if (code === LINUX_EWOULDBLOCK) return { acquired: false, held: true }
+    return { acquired: false, held: false, code }
+  } finally {
+    library.close()
+  }
+}
+
+function errorCode(pointer: Pointer | null) {
+  if (pointer === null) throw new Error("Failed to read process lock error code")
+  return read.i32(pointer, 0)
+}
+
 function acquireWindows(file: string) {
  return Effect.callback<Server, ProcessLock.LockError>((resume) => {
    const server = createServer()
@@ -175,6 +175,9 @@ export const Info = Schema.Struct({
      primary_tools: Schema.optional(Schema.mutable(Schema.Array(Schema.String))).annotate({
        description: "Tools that should only be available to primary agents.",
      }),
+      subagent_depth: Schema.optional(NonNegativeInt).annotate({
+        description: "Maximum subagent nesting depth. Defaults to 1.",
+      }),
      continue_loop_on_deny: Schema.optional(Schema.Boolean).annotate({
        description: "Continue the agent loop when a tool call is denied",
      }),
@@ -77,6 +77,7 @@ export function migrate(info: typeof ConfigV1.Info.Type) {
    commands: commands(info.command),
    instructions: info.instructions,
    references: info.references ?? info.reference,
+    experimental: experimental(info),
    plugins: info.plugin?.map((plugin) =>
      typeof plugin === "string" ? plugin : { package: plugin[0], options: plugin[1] },
    ),
@@ -84,6 +85,31 @@ export function migrate(info: typeof ConfigV1.Info.Type) {
  }
 }

+function experimental(info: typeof ConfigV1.Info.Type) {
+  const policies = [
+    ...(info.enabled_providers === undefined
+      ? []
+      : [
+          { action: "provider.use" as const, resource: "*", effect: "deny" as const },
+          ...info.enabled_providers.map((resource) => ({
+            action: "provider.use" as const,
+            resource,
+            effect: "allow" as const,
+          })),
+        ]),
+    ...(info.disabled_providers ?? []).map((resource) => ({
+      action: "provider.use" as const,
+      resource,
+      effect: "deny" as const,
+    })),
+  ]
+  if (info.experimental?.subagent_depth === undefined && !policies.length) return
+  return {
+    subagent_depth: info.experimental?.subagent_depth,
+    policies: policies.length ? policies : undefined,
+  }
+}
+
 function permissions(info?: ConfigPermissionV1.Info, tools?: Readonly<Record<string, boolean>>) {
  const rules: Array<{ action: string; resource: string; effect: ConfigPermissionV1.Action }> = Object.entries(
    tools ?? {},
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
James Long	4778e6e031	fix(core): stream shell progress tail	2026-07-16 20:25:00 +00:00
James Long	ac1b802820	fix(tui): restore selected action styling, fix subagent list (#37371 )	2026-07-16 16:20:16 -04:00
Dustin Deus	5ee4c1082a	feat(tui): add message navigation shortcuts (#37362 )	2026-07-16 16:18:18 -04:00
starptech	8a70d70006	revert(tui): remove message navigation shortcuts	2026-07-16 21:45:40 +02:00
James Long	91b4634363	fix(tui): remove debug theme toggle (#37359 )	2026-07-16 15:31:42 -04:00
starptech	4f60bde502	feat(tui): add message navigation shortcuts	2026-07-16 21:27:13 +02:00
Dax Raad	0d3b6d430e	fix(tui): restore expandable tool hover state	2026-07-16 15:00:49 -04:00
Dax Raad	a7cf21e157	refactor(core): move wellknown refresh to config	2026-07-16 14:32:46 -04:00
Kit Langton	e4a16830f1	feat(core): add transient session generation (#37330 )	2026-07-16 14:28:54 -04:00
Dax Raad	103f764624	feat(core): add provider policy enforcement	2026-07-16 14:28:18 -04:00
James Long	7a7075d86f	feat(tui): refine V2 theme colors (#37346 )	2026-07-16 14:01:25 -04:00
Aiden Cline	c764732aea	feat(codemode): expand destructuring support (#37342 )	2026-07-16 12:57:37 -05:00
Dax Raad	72af084dc1	refactor(core): make state transforms synchronous	2026-07-16 13:55:14 -04:00
Dax Raad	65a42fd549	fix(core): debounce state reloads	2026-07-16 13:34:46 -04:00
Aiden Cline	ad8e6b1fb6	feat(codemode): support property deletion (#37335 )	2026-07-16 12:21:28 -05:00
Kit Langton	041cda905d	fix(tui): label only detached subagents as background (#37306 )	2026-07-16 12:21:19 -04:00
Aiden Cline	2ad6c42143	feat(core): normalize tool and attachment images at settlement (#37141 )	2026-07-16 11:16:19 -05:00
Aiden Cline	60c7f847c1	feat(codemode): support void and Object.is (#37332 )	2026-07-16 11:15:29 -05:00
Dax Raad	7ab8a08efa	sync	2026-07-16 12:08:12 -04:00
Aiden Cline	7388e69b5c	chore(codemode): update interpreter support	2026-07-16 10:44:44 -05:00
Kit Langton	56c0658e6f	refactor(core): extract session model request preparation (#37210 )	2026-07-16 10:58:06 -04:00
opencode-agent[bot]	06a2592836	fix(tui): align subagent navigation copy (#37319 ) Co-authored-by: Kit Langton <kit.langton@gmail.com>	2026-07-16 10:55:54 -04:00
Kit Langton	4829308f2d	fix(core): preserve logical step across retries (#37316 )	2026-07-16 10:54:51 -04:00
Kit Langton	eec6cd5234	test(core): cover mcp instruction producer (#37303 )	2026-07-16 10:40:38 -04:00
Kit Langton	fc37ae4452	refactor(core): split instruction observation and commit (#37208 )	2026-07-16 10:37:00 -04:00
James Long	5fcef6773c	feat(tui): migrate core surfaces to V2 themes (#37145 )	2026-07-16 10:22:29 -04:00
Kit Langton	a5b28c2af2	refactor(core): rename guidance modules (#37207 )	2026-07-16 10:05:09 -04:00
opencode-agent[bot]	d01dfa57b7	fix(core): limit v2 subagent nesting depth (#37291 )	2026-07-16 09:28:15 -04:00
Shoubhit Dash	198ca749fd	feat(ai): add Vertex Responses entrypoint (#37286 )	2026-07-16 18:09:44 +05:30
Shoubhit Dash	75f9fd5208	feat(ai): add Vertex Chat entrypoint (#37281 )	2026-07-16 17:51:03 +05:30
Shoubhit Dash	282f3f7eb2	refactor(ai): separate Vertex API routes (#37275 )	2026-07-16 17:17:15 +05:30