refactor(app): declare open legacy persistence shapes

test(app): align summary resize transition
fix(client): accept rc.115 schema metadata
2026-09-21 16:17:35 +00:00 · 2026-09-20 20:15:59 -07:00 · 2026-09-20 19:44:22 -07:00 · 2026-09-20 19:44:22 -07:00 · 2026-09-20 19:44:22 -07:00 · 2026-09-20 19:44:22 -07:00
416 changed files with 8557 additions and 4069 deletions
@@ -32,7 +32,7 @@
    },
    "packages/ai": {
      "name": "@opencode/ai",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@aws-sdk/credential-providers": "3.1057.0",
        "@opencode/schema": "workspace:*",
@@ -54,7 +54,7 @@
    },
    "packages/app": {
      "name": "@opencode/app",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@corvu/drawer": "catalog:",
        "@dnd-kit/abstract": "0.5.0",
@@ -87,7 +87,6 @@
        "effect": "catalog:",
        "fuzzysort": "catalog:",
        "ghostty-web": "github:anomalyco/ghostty-web#83c0a07b8628b748aed073b232cb4b52a6ca11c1",
-        "luxon": "catalog:",
        "qr-scanner": "1.4.2",
        "remeda": "catalog:",
        "solid-js": "catalog:",
@@ -100,7 +99,6 @@
        "@sentry/vite-plugin": "catalog:",
        "@tailwindcss/vite": "4.3.3",
        "@types/bun": "catalog:",
-        "@types/luxon": "catalog:",
        "@types/node": "catalog:",
        "@typescript/native-preview": "catalog:",
        "diff": "catalog:",
@@ -113,7 +111,7 @@
    },
    "packages/cli": {
      "name": "@opencode/cli",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "bin": {
        "opencode2": "./bin/opencode2.cjs",
      },
@@ -177,7 +175,7 @@
    },
    "packages/client": {
      "name": "@opencode/client",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@opencode/protocol": "workspace:*",
        "@opencode/schema": "workspace:*",
@@ -193,7 +191,7 @@
        "zod": "catalog:",
      },
      "peerDependencies": {
-        "effect": "4.0.0-rc.112",
+        "effect": "4.0.0-rc.115",
        "solid-js": ">=1.9.0",
      },
      "optionalPeers": [
@@ -203,11 +201,10 @@
    },
    "packages/codemode": {
      "name": "@opencode/codemode",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "acorn": "8.15.0",
        "effect": "catalog:",
-        "typescript": "catalog:",
      },
      "devDependencies": {
        "@tsconfig/bun": "catalog:",
@@ -217,7 +214,7 @@
    },
    "packages/console/app": {
      "name": "@opencode/console-app",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@cloudflare/vite-plugin": "1.15.2",
        "@ibm/plex": "6.4.1",
@@ -253,7 +250,7 @@
    },
    "packages/console/core": {
      "name": "@opencode/console-core",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@aws-sdk/client-sts": "3.782.0",
        "@jsx-email/render": "1.1.1",
@@ -280,7 +277,7 @@
    },
    "packages/console/function": {
      "name": "@opencode/console-function",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@openauthjs/openauth": "0.0.0-20250322224806",
        "@opencode/console-core": "workspace:*",
@@ -297,7 +294,7 @@
    },
    "packages/console/mail": {
      "name": "@opencode/console-mail",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@jsx-email/all": "2.2.3",
        "@jsx-email/cli": "1.4.3",
@@ -321,7 +318,7 @@
    },
    "packages/console/support": {
      "name": "@opencode/console-support",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@cloudflare/vite-plugin": "1.15.2",
        "@opencode/console-core": "workspace:*",
@@ -341,7 +338,7 @@
    },
    "packages/core": {
      "name": "@opencode/core",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@ai-sdk/cohere": "3.0.27",
        "@ai-sdk/gateway": "3.0.104",
@@ -405,18 +402,17 @@
        "@types/node": "catalog:",
        "@types/which": "3.0.4",
        "drizzle-kit": "catalog:",
+        "fast-check": "catalog:",
      },
    },
    "packages/desktop": {
      "name": "@opencode/desktop",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@zip.js/zip.js": "2.7.62",
        "electron-context-menu": "4.1.2",
        "electron-log": "^5",
-        "electron-store": "11.0.2",
        "electron-updater": "6.8.9",
-        "electron-window-state": "^5.0.3",
        "lighthouse": "13.4.1",
      },
      "devDependencies": {
@@ -460,7 +456,7 @@
    },
    "packages/enterprise": {
      "name": "@opencode/enterprise",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@hono/standard-validator": "catalog:",
        "@opencode-ai/sdk": "1.18.21",
@@ -497,7 +493,7 @@
    },
    "packages/function": {
      "name": "@opencode/function",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@octokit/auth-app": "8.0.1",
        "@octokit/rest": "catalog:",
@@ -513,9 +509,9 @@
    },
    "packages/http-recorder": {
      "name": "@opencode/http-recorder",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
-        "@effect/platform-node-shared": "4.0.0-rc.112",
+        "@effect/platform-node-shared": "4.0.0-rc.115",
      },
      "devDependencies": {
        "@effect/platform-node": "catalog:",
@@ -532,7 +528,7 @@
    },
    "packages/httpapi-codegen": {
      "name": "@opencode/httpapi-codegen",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "effect": "catalog:",
        "prettier": "3.6.2",
@@ -545,7 +541,7 @@
    },
    "packages/latex": {
      "name": "@opencode/latex",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@opencode/plugin": "workspace:*",
        "@opentui/core": "catalog:",
@@ -559,7 +555,7 @@
    },
    "packages/merman": {
      "name": "@opencode/merman",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@opencode/plugin": "workspace:*",
        "@opentui/core": "catalog:",
@@ -574,7 +570,7 @@
    },
    "packages/plugin": {
      "name": "@opencode/plugin",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@ai-sdk/provider": "3.0.8",
        "@opencode/ai": "workspace:*",
@@ -613,7 +609,7 @@
    },
    "packages/plugin-browser": {
      "name": "@opencode/plugin-browser",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@opencode/plugin": "workspace:*",
        "@opencode/schema": "workspace:*",
@@ -643,7 +639,7 @@
    },
    "packages/protocol": {
      "name": "@opencode/protocol",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@opencode/schema": "workspace:*",
        "effect": "catalog:",
@@ -658,7 +654,7 @@
    },
    "packages/schema": {
      "name": "@opencode/schema",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@standard-schema/spec": "catalog:",
        "effect": "catalog:",
@@ -682,7 +678,7 @@
    },
    "packages/sdk": {
      "name": "@opencode/sdk",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@opencode/client": "workspace:*",
        "@opencode/core": "workspace:*",
@@ -703,7 +699,7 @@
    },
    "packages/server": {
      "name": "@opencode/server",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@effect/platform-node": "catalog:",
        "@effect/platform-node-shared": "catalog:",
@@ -725,7 +721,7 @@
    },
    "packages/session-ui": {
      "name": "@opencode/session-ui",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@kobalte/core": "catalog:",
        "@opencode/client": "workspace:*",
@@ -760,7 +756,7 @@
    },
    "packages/simulation": {
      "name": "@opencode/simulation",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@opencode/ai": "workspace:*",
        "@opencode/core": "workspace:*",
@@ -780,7 +776,7 @@
    },
    "packages/stats/app": {
      "name": "@opencode/stats-app",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@ibm/plex": "6.4.1",
        "@kobalte/core": "catalog:",
@@ -814,7 +810,7 @@
    },
    "packages/stats/core": {
      "name": "@opencode/stats-core",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@aws-sdk/client-athena": "3.933.0",
        "@planetscale/database": "1.19.0",
@@ -833,7 +829,7 @@
    },
    "packages/stats/server": {
      "name": "@opencode/stats-server",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@aws-sdk/client-firehose": "3.933.0",
        "@effect/platform-node": "catalog:",
@@ -879,7 +875,7 @@
    },
    "packages/theme": {
      "name": "@opencode/theme",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@opentui/core": "catalog:",
        "effect": "catalog:",
@@ -893,7 +889,7 @@
    },
    "packages/tui": {
      "name": "@opencode/tui",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@opencode/client": "workspace:*",
        "@opencode/core": "workspace:*",
@@ -928,7 +924,7 @@
    },
    "packages/ui": {
      "name": "@opencode/ui",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@kobalte/core": "catalog:",
        "@pierre/diffs": "catalog:",
@@ -963,7 +959,7 @@
    },
    "packages/util": {
      "name": "@opencode/util",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@effect/opentelemetry": "catalog:",
        "@effect/platform-node": "catalog:",
@@ -996,7 +992,7 @@
    },
    "packages/web": {
      "name": "@opencode/web",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "@astrojs/cloudflare": "12.6.3",
        "@astrojs/markdown-remark": "6.3.1",
@@ -1037,7 +1033,7 @@
    },
    "services/update": {
      "name": "@opencode/update",
-      "version": "2.0.8",
+      "version": "2.0.11",
      "dependencies": {
        "jose": "6.0.11",
        "semver": "catalog:",
@@ -1102,10 +1098,10 @@
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    "@hono/standard-validator": "0.2.0",
    "@hono/zod-validator": "0.4.2",
    "@kobalte/core": "0.13.13",
@@ -1145,7 +1141,8 @@
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    "drizzle-orm": "1.0.0-rc.5-169397b",
-    "effect": "4.0.0-rc.112",
+    "effect": "4.0.0-rc.115",
+    "fast-check": "4.9.0",
    "fuzzysort": "3.1.0",
    "get-east-asian-width": "1.6.0",
    "hono": "4.10.7",
@@ -1677,13 +1674,13 @@

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@@ -4461,8 +4436,6 @@

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@@ -4473,7 +4446,7 @@

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@@ -4729,14 +4702,12 @@

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-    "mime": ["mime@4.1.0", "", { "bin": { "mime": "bin/cli.js" } }, "sha512-X5ju04+cAzsojXKes0B/S4tcYtFAJ6tTMuSPBEn9CPGlrWr8Fiw7qYeLT0XyH80HSoAoqWCaz+MWKh22P7G1cw=="],
+    "mime": ["mime@3.0.0", "", { "bin": { "mime": "cli.js" } }, "sha512-jSCU7/VB1loIWBZe14aEYHU/+1UMEHoaO7qxCOVJOw9GgH72VAWppxNcjU+x9a2k3GSIBXNKxXQFqRvvZ7vr3A=="],

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@@ -4779,10 +4750,6 @@

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@@ -4825,8 +4792,6 @@

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-    "node-gyp-build-optional-packages": ["node-gyp-build-optional-packages@5.2.2", "", { "dependencies": { "detect-libc": "^2.0.1" }, "bin": { "node-gyp-build-optional-packages": "bin.js", "node-gyp-build-optional-packages-optional": "optional.js", "node-gyp-build-optional-packages-test": "build-test.js" } }, "sha512-s+w+rBWnpTMwSFbaE0UXsRlg7hU4FjekKU4eyAih5T8nJuNZT1nNsskXpxmeqSK9UzkBl6UgRlnKc8hz8IEqOw=="],
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@@ -5491,8 +5456,6 @@

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    "tapable": ["tapable@2.3.3", "", {}, "sha512-uxc/zpqFg6x7C8vOE7lh6Lbda8eEL9zmVm/PLeTPBRhh1xCgdWaQ+J1CUieGpIfm2HdtsUpRv+HshiasBMcc6A=="],
@@ -5617,8 +5580,6 @@

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-
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@@ -5627,7 +5588,7 @@

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-    "undici": ["undici@8.10.0", "", {}, "sha512-HvltHd7avK13QIw/oLe4qoOLyoVSoafqJ2jYOrtMRBkbYT31eiBQ8O0ehRKZiEZCMEyLFQNIADpgCWC5fALvYQ=="],
+    "undici": ["undici@8.10.2", "", {}, "sha512-/y4/bH9YNU5hi9NIrpOuvGXFcxrj3CMrV+/AYpowAYTpHn8gX/XPFjNy766FPoYY0miQhdW977JFWKGNhBdwyQ=="],

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@@ -6081,8 +6042,6 @@

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@@ -6691,6 +6642,8 @@

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+
    "unplugin/acorn": ["acorn@8.18.0", "", { "bin": { "acorn": "bin/acorn" } }, "sha512-lGq+9yr1/GuAWaVYIHRjvvySG5/4VfKIvC8EWxStPdcDh/Ka7FG3twP6v4d5BkravUilhIAsG4Qj83t02LWUPQ=="],

    "unused-filename/escape-string-regexp": ["escape-string-regexp@5.0.0", "", {}, "sha512-/veY75JbMK4j1yjvuUxuVsiS/hr/4iHs9FTT6cgTexxdE0Ly/glccBAkloH/DofkjRbZU3bnoj38mOmhkZ0lHw=="],
@@ -6925,18 +6878,12 @@

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-    "@electron/fuses/fs-extra/jsonfile": ["jsonfile@6.2.1", "", { "dependencies": { "universalify": "^2.0.0" }, "optionalDependencies": { "graceful-fs": "^4.1.6" } }, "sha512-zwOTdL3rFQ/lRdBnntKVOX6k5cKJwEc1HdilT71BWEu7J41gXIB2MRp+vxduPSwZJPWBxEzv4yH1wYLJGUHX4Q=="],
+    "@electron/get/fs-extra/jsonfile": ["jsonfile@4.0.0", "", { "optionalDependencies": { "graceful-fs": "^4.1.6" } }, "sha512-m6F1R3z8jjlf2imQHS2Qez5sjKWQzbuuhuJ/FKYFRZvPE3PuHcSMVZzfsLhGVOkfd20obL5SWEBew5ShlquNxg=="],

    "@electron/get/fs-extra/universalify": ["universalify@0.1.2", "", {}, "sha512-rBJeI5CXAlmy1pV+617WB9J63U6XcazHHF2f2dbJix4XzpUF0RS3Zbj0FGIOCAva5P/d/GBOYaACQ1w+0azUkg=="],

-    "@electron/notarize/fs-extra/jsonfile": ["jsonfile@6.2.1", "", { "dependencies": { "universalify": "^2.0.0" }, "optionalDependencies": { "graceful-fs": "^4.1.6" } }, "sha512-zwOTdL3rFQ/lRdBnntKVOX6k5cKJwEc1HdilT71BWEu7J41gXIB2MRp+vxduPSwZJPWBxEzv4yH1wYLJGUHX4Q=="],
-
-    "@electron/universal/fs-extra/jsonfile": ["jsonfile@6.2.1", "", { "dependencies": { "universalify": "^2.0.0" }, "optionalDependencies": { "graceful-fs": "^4.1.6" } }, "sha512-zwOTdL3rFQ/lRdBnntKVOX6k5cKJwEc1HdilT71BWEu7J41gXIB2MRp+vxduPSwZJPWBxEzv4yH1wYLJGUHX4Q=="],
-
    "@electron/universal/minimatch/brace-expansion": ["brace-expansion@2.1.4", "", { "dependencies": { "balanced-match": "^1.0.0" } }, "sha512-hGfVzPxthbf3+2yjg/RBs60cB0FhqBS/zvdV/4wn4/BmN0bNMMHPc4V/BbFieqf1TKAGGAHnY4eSjajCl0f2Xg=="],

-    "@electron/windows-sign/fs-extra/jsonfile": ["jsonfile@6.2.1", "", { "dependencies": { "universalify": "^2.0.0" }, "optionalDependencies": { "graceful-fs": "^4.1.6" } }, "sha512-zwOTdL3rFQ/lRdBnntKVOX6k5cKJwEc1HdilT71BWEu7J41gXIB2MRp+vxduPSwZJPWBxEzv4yH1wYLJGUHX4Q=="],
-
    "@expressive-code/plugin-shiki/shiki/@shikijs/core": ["@shikijs/core@3.23.0", "", { "dependencies": { "@shikijs/types": "3.23.0", "@shikijs/vscode-textmate": "^10.0.2", "@types/hast": "^3.0.4", "hast-util-to-html": "^9.0.5" } }, "sha512-NSWQz0riNb67xthdm5br6lAkvpDJRTgB36fxlo37ZzM2yq0PQFFzbd8psqC2XMPgCzo1fW6cVi18+ArJ44wqgA=="],

    "@expressive-code/plugin-shiki/shiki/@shikijs/engine-javascript": ["@shikijs/engine-javascript@3.23.0", "", { "dependencies": { "@shikijs/types": "3.23.0", "@shikijs/vscode-textmate": "^10.0.2", "oniguruma-to-es": "^4.3.4" } }, "sha512-aHt9eiGFobmWR5uqJUViySI1bHMqrAgamWE1TYSUoftkAeCCAiGawPMwM+VCadylQtF4V3VNOZ5LmfItH5f3yA=="],
@@ -7013,8 +6960,6 @@

    "@jsx-email/doiuse-email/htmlparser2/entities": ["entities@4.5.0", "", {}, "sha512-V0hjH4dGPh9Ao5p0MoRY6BVqtwCjhz6vI5LT8AJ55H+4g9/4vbHx1I54fS0XuclLhDHArPQCiMjDxjaL8fPxhw=="],

-    "@malept/flatpak-bundler/fs-extra/jsonfile": ["jsonfile@6.2.1", "", { "dependencies": { "universalify": "^2.0.0" }, "optionalDependencies": { "graceful-fs": "^4.1.6" } }, "sha512-zwOTdL3rFQ/lRdBnntKVOX6k5cKJwEc1HdilT71BWEu7J41gXIB2MRp+vxduPSwZJPWBxEzv4yH1wYLJGUHX4Q=="],
-
    "@octokit/auth-app/@octokit/request/@octokit/endpoint": ["@octokit/endpoint@11.0.4", "", { "dependencies": { "@octokit/types": "^17.0.0", "universal-user-agent": "^7.0.2" } }, "sha512-f1cOWoHPmxryJFknxbtDdjODWfV8A9tc8Aae6ermXPNgHFZ/x91AtHIz4gicEjL8hkJiip+u21QHJORfBv/qiA=="],

    "@octokit/auth-app/@octokit/request/@octokit/types": ["@octokit/types@17.0.0", "", { "dependencies": { "@octokit/openapi-types": "^28.0.0" } }, "sha512-ByP1v7YL5SMveFPP7+sj0/ZuWCOOg/Chs4NafOMpq6WNIM/hdGY0S7C0TCGDBWu1aGmOxmUIhMx3cO+IdwYZ1Q=="],
@@ -7393,8 +7338,6 @@

    "cliui/strip-ansi/ansi-regex": ["ansi-regex@5.0.1", "", {}, "sha512-quJQXlTSUGL2LH9SUXo8VwsY4soanhgo6LNSm84E1LBcE8s3O0wpdiRzyR9z/ZZJMlMWv37qOOb9pdJlMUEKFQ=="],

-    "conf/dot-prop/type-fest": ["type-fest@5.8.0", "", { "dependencies": { "tagged-tag": "^1.0.0" } }, "sha512-YGYEVz3Fm5iy/AybuA0oyNFq7H4CgQNfRp/qfe8nurE1kuCeNm3/vfm9X4Mtl+qLyaKJUh5xrFZwogr41SMjYA=="],
-
    "cross-spawn/which/isexe": ["isexe@2.0.0", "", {}, "sha512-RHxMLp9lnKHGHRng9QFhRCMbYAcVpn69smSGcq3f36xjgVVWThj4qqLbTLlq7Ssj8B+fIQ1EuCEGI2lKsyQeIw=="],

    "csso/css-tree/mdn-data": ["mdn-data@2.0.28", "", {}, "sha512-aylIc7Z9y4yzHYAJNuESG3hfhC+0Ibp/MAMiaOZgNv4pmEdFyfZhhhny4MNiAfWdBQ1RQ2mfDWmM1x8SvGyp8g=="],
@@ -7419,6 +7362,8 @@

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

+    "electron-winstaller/fs-extra/jsonfile": ["jsonfile@4.0.0", "", { "optionalDependencies": { "graceful-fs": "^4.1.6" } }, "sha512-m6F1R3z8jjlf2imQHS2Qez5sjKWQzbuuhuJ/FKYFRZvPE3PuHcSMVZzfsLhGVOkfd20obL5SWEBew5ShlquNxg=="],
+
    "electron-winstaller/fs-extra/universalify": ["universalify@0.1.2", "", {}, "sha512-rBJeI5CXAlmy1pV+617WB9J63U6XcazHHF2f2dbJix4XzpUF0RS3Zbj0FGIOCAva5P/d/GBOYaACQ1w+0azUkg=="],

    "electron/@electron/get/env-paths": ["env-paths@3.0.0", "", {}, "sha512-dtJUTepzMW3Lm/NPxRf3wP4642UWhjL2sQxc+ym2YMj1m/H2zDNQOlezafzkHwn6sMstjHTwG6iQQsctDW/b1A=="],
@@ -7567,8 +7512,6 @@

    "tw-to-css/tailwindcss/postcss": ["postcss@8.5.26", "", { "dependencies": { "nanoid": "^3.3.17", "picocolors": "^1.1.1", "source-map-js": "^1.2.1" } }, "sha512-u82N74LFzG8ca+dD8puPnplTXoGH4fTPpVGuIbt36G3qvNlkvfD0lEAZSxaly3KX8TS/L1A1gsCEmvKmBcVbkQ=="],

-    "unzipper/fs-extra/jsonfile": ["jsonfile@6.2.1", "", { "dependencies": { "universalify": "^2.0.0" }, "optionalDependencies": { "graceful-fs": "^4.1.6" } }, "sha512-zwOTdL3rFQ/lRdBnntKVOX6k5cKJwEc1HdilT71BWEu7J41gXIB2MRp+vxduPSwZJPWBxEzv4yH1wYLJGUHX4Q=="],
-
    "venice-ai-sdk-provider/@ai-sdk/openai-compatible/@ai-sdk/provider": ["@ai-sdk/provider@3.0.15", "", { "dependencies": { "json-schema": "^0.4.0" } }, "sha512-XeZW1CcDF2GMbH4wejW6xBRI2QCOgnkVYUnxoeDadB1mf85riL2bMUeDoh+6gJ/r4mjNfzUPW8OjLjvwTP0u1Q=="],

    "venice-ai-sdk-provider/@ai-sdk/openai-compatible/@ai-sdk/provider-utils": ["@ai-sdk/provider-utils@4.0.46", "", { "dependencies": { "@ai-sdk/provider": "3.0.15", "@standard-schema/spec": "^1.1.0", "eventsource-parser": "^3.0.8", "undici": "^6.28.0" }, "peerDependencies": { "zod": "^3.25.76 || ^4.1.8" } }, "sha512-tEtld97plCFiYevsJuOkGkeuhQndeMWFBVrJS4AjnbD5AqrNSXRCe0p+BZ3Cju/sxDeeZ9ym3q9YUV8fASA7aQ=="],
@@ -7577,8 +7520,6 @@

    "vscode-languageserver/vscode-languageserver-protocol/vscode-jsonrpc": ["vscode-jsonrpc@8.2.0", "", {}, "sha512-C+r0eKJUIfiDIfwJhria30+TYWPtuHJXHtI7J0YlOmKAo7ogxP20T0zxB7HZQIFhIyvoBPwWskjxrvAtfjyZfA=="],

-    "workbox-build/fs-extra/jsonfile": ["jsonfile@6.2.1", "", { "dependencies": { "universalify": "^2.0.0" }, "optionalDependencies": { "graceful-fs": "^4.1.6" } }, "sha512-zwOTdL3rFQ/lRdBnntKVOX6k5cKJwEc1HdilT71BWEu7J41gXIB2MRp+vxduPSwZJPWBxEzv4yH1wYLJGUHX4Q=="],
-
    "wrangler/esbuild/@esbuild/aix-ppc64": ["@esbuild/aix-ppc64@0.25.4", "", { "os": "aix", "cpu": "ppc64" }, "sha512-1VCICWypeQKhVbE9oW/sJaAmjLxhVqacdkvPLEjwlttjfwENRSClS8EjBz0KzRyFSCPDIkuXW34Je/vk7zdB7Q=="],

    "wrangler/esbuild/@esbuild/android-arm": ["@esbuild/android-arm@0.25.4", "", { "os": "android", "cpu": "arm" }, "sha512-QNdQEps7DfFwE3hXiU4BZeOV68HHzYwGd0Nthhd3uCkkEKK7/R6MTgM0P7H7FAs5pU/DIWsviMmEGxEoxIZ+ZQ=="],
@@ -1,8 +1,8 @@
 {
  "nodeModules": {
-    "x86_64-linux": "sha256-TlCPtuIvTNF01fLI0yHCLzVkx53yF9xxvAObDMGeo8M=",
-    "aarch64-linux": "sha256-aEjyPIXHeA5w1iZXbPKJAOIJQBfXg+LAx/y7C5uFz4g=",
-    "aarch64-darwin": "sha256-lthMTio2qNy+H2tL9cAPmqC41O+wdSADI61cnW4dIb0=",
-    "x86_64-darwin": "sha256-ONFbRQnwzOYHo0Pyh327QfJG2uzqzNEn/SS2vbYYMdM="
+    "x86_64-linux": "sha256-8mOzCscBAuogG4tm8CroqjTX5E5yzCvTobbhKvxQP0U=",
+    "aarch64-linux": "sha256-drrRSpzxC8bfaTXBpOyaN0QAyBVV7WJzm0NstJ+8sAE=",
+    "aarch64-darwin": "sha256-YY5A/zxLPONvgnI+DZlzcD2K5Q9PIw4F2YbDxKbT4UU=",
+    "x86_64-darwin": "sha256-/c/Ew4onA+9+l6GRKXz3zWq3QFESM7j5RyGLCWRPQFw="
  }
 }
@@ -2,7 +2,7 @@
  "$schema": "https://json.schemastore.org/package.json",
  "name": "opencode",
  "description": "AI-powered development tool",
-  "version": "2.0.8",
+  "version": "2.0.11",
  "private": true,
  "type": "module",
  "packageManager": "bun@1.4.2",
@@ -42,10 +42,10 @@
      "packages/stats/*"
    ],
    "catalog": {
-      "@effect/opentelemetry": "4.0.0-rc.112",
-      "@effect/platform-node": "4.0.0-rc.112",
-      "@effect/platform-node-shared": "4.0.0-rc.112",
-      "@effect/sql-sqlite-bun": "4.0.0-rc.112",
+      "@effect/opentelemetry": "4.0.0-rc.115",
+      "@effect/platform-node": "4.0.0-rc.115",
+      "@effect/platform-node-shared": "4.0.0-rc.115",
+      "@effect/sql-sqlite-bun": "4.0.0-rc.115",
      "@npmcli/arborist": "9.4.0",
      "@types/bun": "1.4.0",
      "@types/cross-spawn": "6.0.6",
@@ -79,7 +79,8 @@
      "dompurify": "3.4.14",
      "drizzle-kit": "1.0.0-rc.5-ab785fc",
      "drizzle-orm": "1.0.0-rc.5-169397b",
-      "effect": "4.0.0-rc.112",
+      "effect": "4.0.0-rc.115",
+      "fast-check": "4.9.0",
      "ai": "6.0.168",
      "cross-spawn": "7.0.6",
      "hono": "4.10.7",
@@ -12,7 +12,7 @@

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

- Keep provider-defined string enums forward-compatible. Expose known values for autocomplete while accepting future values with `Known | (string & {})`; use `Schema.String` at runtime unless rejecting unknown values is required for correctness.
+- Prefer forward compatibility for provider-defined options that OpenCode only passes through. For pass-through string enums, expose known values for autocomplete while accepting future values with `Known | (string & {})`, and accept any string at runtime. Closed literals are appropriate when OpenCode branches on a value, transforms its associated structure, or otherwise cannot correctly handle an unknown variant. New options whose shape or behavior requires implementation remain unsupported until they are handled; do not blindly forward unknown structures.
 - Order reasoning-effort values from lowest to highest: `none`, `minimal`, `low`, `medium`, `high`, `xhigh`, `max`. Provider-specific subsets follow the same relative order in types, schemas, option lists, and tests.

 ## Tests
@@ -14,7 +14,7 @@ import { OpenAI } from "@opencode/ai/providers"
 * hover imports and local values to see how the public API is typed.
 */

-const apiKey = Config.redacted("OPENAI_API_KEY")
+const apiKey = Config.Redacted("OPENAI_API_KEY")

 // 1. Pick a model. The provider helper records provider identity, protocol
 // choice, capabilities, deployment options, authentication, and defaults.
@@ -1,6 +1,6 @@
 {
  "$schema": "https://json.schemastore.org/package.json",
-  "version": "2.0.8",
+  "version": "2.0.11",
  "name": "@opencode/ai",
  "type": "module",
  "license": "MIT",
@@ -278,7 +278,7 @@ const readEnvFile = Effect.fn("RecordingEnv.readFile")(function* () {
 })

 const readConfigString = (provider: ConfigProvider.ConfigProvider, name: string) =>
-  Config.string(name)
+  Config.String(name)
    .parse(provider)
    .pipe(
      Effect.match({
@@ -83,7 +83,7 @@ const AnthropicCacheControl = Schema.Struct({
  type: Schema.tag("ephemeral"),
  ttl: Schema.optional(Schema.Literals(["5m", "1h"])),
 })
-const AnthropicServiceTier = Schema.Literals(["auto", "standard_only"])
+const AnthropicServiceTier = knownString<"auto" | "standard_only">()

 const AnthropicTextBlock = Schema.Struct({
  type: Schema.tag("text"),
@@ -276,7 +276,7 @@ const AnthropicThinkingBlockBinding = Schema.Struct({
 })

 const AnthropicThinkingFields = {
-  display: Schema.optional(Schema.Literals(["summarized", "omitted"])),
+  display: Schema.optional(knownString<"summarized" | "omitted">()),
  block_binding: Schema.optional(AnthropicThinkingBlockBinding),
 }
 const AnthropicThinkingEnabled = Schema.Struct({
@@ -73,11 +73,6 @@ const driver = (options: Options, body: string): WebSocketChannelDriver => {
          )
        if (event.type === "error") {
          terminal = true
-          yield* OpenResponses.decodeKnownErrorEvent(event).pipe(
-            Effect.mapError((cause) =>
-              ProviderShared.eventError(options.id, `${options.name} returned a malformed error event`, frame, cause),
-            ),
-          )
          return {
            type: "provider-failure",
            error: OpenResponses.providerFailure(event, `${options.name} stream error`, frame),
@@ -108,7 +108,7 @@ const incremental = (
  return input.slice(baseline.length)
 }

-const code = (event: OpenResponses.Event) => event.code || event.error?.code || event.response?.error?.code || undefined
+const code = (event: OpenResponses.Event) => OpenResponses.errorDetail(event).code

 const rejected = (
  observation: Extract<ChannelObservation, { readonly type: "provider-failure" }>,
@@ -1,4 +1,4 @@
-import { Effect, Option, Schema, SchemaGetter } from "effect"
+import { Effect, Option, Schema } from "effect"
 import type { Content } from "@opencode/schema/tool"
 import { HttpTransport } from "../route/transport/index.js"
 import { Protocol } from "../route/protocol.js"
@@ -333,53 +333,13 @@ export const StreamItem = Schema.StructWithRest(
 export type StreamItem = Schema.Schema.Type<typeof StreamItem>
 export type OutputItem = StreamItem & { readonly id: string }

-// Responses-compatible providers put streaming error details at the top level or
-// under `error`, and response failures under `response.error`. Accept all three shapes.
+// Responses-compatible providers put error details at the top level, under `error`, or under
+// `response.error`, and gateways reshape them freely: strings, numeric codes, extra fields. Those
+// fields decode as opaque values and `errorDetail` reads them defensively, so an error frame can
+// only fail on invalid JSON and otherwise always classifies with the raw body as the fallback.
 // https://www.openresponses.org/specification
-const OpenResponsesErrorObject = Schema.Struct({
-  type: optionalNull(Schema.String),
-  code: optionalNull(Schema.String),
-  message: optionalNull(Schema.String),
-  param: optionalNull(Schema.String),
-})
-const OpenResponsesErrorPayload = Schema.Union([Schema.String, OpenResponsesErrorObject]).pipe(
-  Schema.decodeTo(OpenResponsesErrorObject, {
-    decode: SchemaGetter.transform((error) => (typeof error === "string" ? { message: error } : error)),
-    encode: SchemaGetter.passthrough(),
-  }),
-)
-type OpenResponsesErrorPayload = Schema.Schema.Type<typeof OpenResponsesErrorPayload>
-
-const WebSocketErrorHeader = Schema.Union([Schema.String, Schema.Number, Schema.Boolean])
-export const WebSocketErrorEvent = Schema.StructWithRest(
-  Schema.Struct({
-    type: Schema.tag("error"),
-    status: Schema.optional(Schema.Number),
-    status_code: Schema.optional(Schema.Number),
-    code: optionalNull(Schema.String),
-    message: Schema.optional(Schema.String),
-    param: optionalNull(Schema.String),
-    error: optionalNull(OpenResponsesErrorPayload),
-    headers: Schema.optional(Schema.Record(Schema.String, WebSocketErrorHeader)),
-  }),
-  [Schema.Record(Schema.String, Schema.Unknown)],
-)
-const decodeWebSocketErrorEvent = Schema.decodeUnknownEffect(WebSocketErrorEvent)
-
-export const decodeKnownErrorEvent = (event: Event) =>
-  decodeWebSocketErrorEvent({
-    ...event,
-    status: typeof event.status === "number" ? event.status : undefined,
-    status_code: typeof event.status_code === "number" ? event.status_code : undefined,
-    headers: ProviderShared.isRecord(event.headers)
-      ? Object.fromEntries(
-          Object.entries(event.headers).filter(
-            (entry): entry is [string, string | number | boolean] =>
-              typeof entry[1] === "string" || typeof entry[1] === "number" || typeof entry[1] === "boolean",
-          ),
-        )
-      : undefined,
-  })
+const asText = (value: unknown) =>
+  typeof value === "string" && value.length > 0 ? value : typeof value === "number" ? String(value) : undefined

 export const Event = Schema.StructWithRest(
  Schema.Struct({
@@ -400,31 +360,18 @@ export const Event = Schema.StructWithRest(
          incomplete_details: optionalNull(Schema.Struct({ reason: Schema.optional(Schema.String) })),
          output: Schema.optional(Schema.Array(StreamItem)),
          usage: optionalNull(OpenResponsesUsage),
-          error: optionalNull(OpenResponsesErrorPayload),
+          error: Schema.optional(Schema.Unknown),
        }),
        [Schema.Record(Schema.String, Schema.Unknown)],
      ),
    ),
-    code: optionalNull(Schema.String),
-    message: Schema.optional(Schema.String),
-    param: optionalNull(Schema.String),
-    error: optionalNull(OpenResponsesErrorPayload),
+    code: Schema.optional(Schema.Unknown),
+    message: Schema.optional(Schema.Unknown),
+    error: Schema.optional(Schema.Unknown),
    status: Schema.optional(Schema.Unknown),
    status_code: Schema.optional(Schema.Unknown),
-    headers: Schema.optional(Schema.Unknown),
  }),
  [Schema.Record(Schema.String, Schema.Unknown)],
-).pipe(
-  Schema.decode({
-    decode: SchemaGetter.transform((event) => {
-      if (event.type !== "error" || event.error != null) return event
-      const { code, message, param, ...rest } = event
-      if (code === undefined && message === undefined && param === undefined) return event
-      // Flat errors (for example, Meta's) can also arrive through generic Responses endpoints.
-      return { ...rest, error: { code, message, param } }
-    }),
-    encode: SchemaGetter.passthrough(),
-  }),
 )
 export type Event = Schema.Schema.Type<typeof Event>
 export type NormalizedEvent = Event & { readonly item?: OutputItem | null }
@@ -433,16 +380,15 @@ const decodeEventValue = Schema.decodeUnknownEffect(Event)
 const decodeFrame = Schema.decodeUnknownEffect(ProviderShared.Json)

 /**
- * Decodes one WebSocket frame. xAI answers a rejected `response.create` with `{ "error": { "message", "type" } }` and no
- * event type; that envelope reads as an error event so the failure classifies instead of failing decoding.
+ * Decodes one WebSocket frame. Some providers and gateways answer a rejected `response.create` with a bare
+ * `{ "error": ... }` envelope and no event type; that reads as an error event so it classifies instead of
+ * failing decoding.
 */
 export const decodeChannelEvent = (frame: string) =>
  decodeFrame(frame).pipe(
    Effect.flatMap((value) =>
      decodeEventValue(
-        ProviderShared.isRecord(value) &&
-          value.type === undefined &&
-          (typeof value.error === "string" || ProviderShared.isRecord(value.error))
+        ProviderShared.isRecord(value) && value.type === undefined && value.error != null
          ? { ...value, type: "error" }
          : value,
      ),
@@ -1422,22 +1368,21 @@ const onResponseFinish = Effect.fn("OpenResponses.onResponseFinish")(function* (
  return [{ ...current, lifecycle }, events] satisfies StepResult
 })

-// Build the prettiest summary available from whatever the provider supplied.
-// When both code and message are present, prefix the code so consumers see
-// the failure mode (e.g. `rate_limit_exceeded: Slow down`) instead of just
-// the bare message — production rate limits and context-length failures used
-// to be indistinguishable from generic stream drops. Returns undefined when
-// the payload carries no usable summary.
-const providerErrorMessage = (event: Event, nested: OpenResponsesErrorPayload | undefined): string | undefined => {
-  const message = event.message || nested?.message || undefined
-  const code = event.code || nested?.code || undefined
-  if (message && code) return `${code}: ${message}`
-  return message || code
+/** Error code and message from wherever the frame put them; top-level fields win over nested ones. */
+export const errorDetail = (event: Event) => {
+  const raw = event.error ?? event.response?.error
+  const nested = typeof raw === "string" ? { message: raw } : ProviderShared.isRecord(raw) ? raw : undefined
+  return {
+    message: asText(event.message) ?? asText(nested?.message),
+    code: asText(event.code) ?? asText(nested?.code),
+  }
 }

+// Prefix the code when both are present (`rate_limit_exceeded: Slow down`) so the failure mode is
+// visible; fall back to the raw frame rather than a generic message when neither decodes.
 export const providerFailure = (event: Event, fallback: string, body = ProviderShared.encodeJson(event)) => {
-  const nested = event.error ?? event.response?.error ?? undefined
-  const summary = providerErrorMessage(event, nested)
+  const detail = errorDetail(event)
+  const summary = detail.message && detail.code ? `${detail.code}: ${detail.message}` : (detail.message ?? detail.code)
  const message = summary ?? (body === "{}" ? fallback : body)
  const status =
    typeof event.status === "number"
@@ -1520,18 +1465,7 @@ export const step = (state: ParserState, event: NormalizedEvent) => {
  if (event.type === "response.output_item.done") return onOutputItemDone(state, event.item)
  if (event.type === "response.completed" || event.type === "response.incomplete") return onResponseFinish(state, event)
  if (event.type === "response.failed") return providerFailure(event, `${state.name} response failed`)
-  if (event.type === "error")
-    return decodeKnownErrorEvent(event).pipe(
-      Effect.mapError((cause) =>
-        ProviderShared.eventError(
-          state.id,
-          `${state.name} returned a malformed error event`,
-          ProviderShared.encodeJson(event),
-          cause,
-        ),
-      ),
-      Effect.flatMap(() => providerFailure(event, `${state.name} stream error`)),
-    )
+  if (event.type === "error") return providerFailure(event, `${state.name} stream error`)
  return Effect.succeed<StepResult>([state, NO_EVENTS])
 }

@@ -89,7 +89,7 @@ export const optional = (secret: Secret | undefined, source = "optional value")
    ? credential(Effect.fail(new MissingCredentialError(source)))
    : credentialFromSecret(secret, source)

-export const config = (name: string) => credentialFromSecret(Config.redacted(name), name)
+export const config = (name: string) => credentialFromSecret(Config.Redacted(name), name)

 export const effect = (load: Effect.Effect<Redacted.Redacted, CredentialError>) => credential(load)

@@ -215,7 +215,9 @@ export const fromWebSocket = (
 ): Effect.Effect<WebSocketConnection, AIError> =>
  Effect.gen(function* () {
    yield* waitOpen(ws, input)
-    const messages = yield* Queue.bounded<string | Uint8Array, AIError | Cause.Done<void>>(128)
+    // The socket pushes frames synchronously and cannot be paused, so the hand-off to the consumer
+    // fiber must absorb whole read buffers. Bun delivers over a thousand small frames in one tick.
+    const messages = yield* Queue.unbounded<string | Uint8Array, AIError | Cause.Done<void>>()

    const oversized = (message: string | Uint8Array) =>
      typeof message === "string" ? new Blob([message]).size > MAX_FRAME_BYTES : message.byteLength > MAX_FRAME_BYTES
@@ -238,19 +240,7 @@ export const fromWebSocket = (
    }
    const offer = (message: string | Uint8Array) => {
      if (rejectOversized(message)) return
-      if (Queue.offerUnsafe(messages, message)) return
-      Queue.failCauseUnsafe(
-        messages,
-        Cause.fail(
-          transportError("WebSocket inbound queue overflow", {
-            body: typeof message === "string" ? message : new TextDecoder().decode(message),
-            url: input.url,
-            operation: "read",
-            code: "queue-overflow",
-            phase: "receive",
-          }),
-        ),
-      )
+      Queue.offerUnsafe(messages, message)
    }

    const onMessage = (event: MessageEvent) => {
@@ -231,7 +231,7 @@ export const toDefinitions = (tools: Tools): ReadonlyArray<ToolDefinitionClass>
  )

 const toJsonSchema = (schema: Schema.Top): JsonSchema.JsonSchema => {
-  const document = Schema.toJsonSchemaDocument(schema)
+  const document = Schema.toJsonSchemaDocument(schema, { onExcessProperty: "error" })
  if (Object.keys(document.definitions).length === 0) return document.schema
  return { ...document.schema, $defs: document.definitions }
 }
@@ -30,7 +30,7 @@ type LanguageModel = {
 declare const auth: Auth.Definition
 declare const optionalAuthModel: LanguageModelFactory<BaseOptions, "optional", LanguageModel>
 declare const requiredAuthModel: LanguageModelFactory<BaseOptions, "required", LanguageModel>
-const configApiKey = Config.redacted("OPENAI_API_KEY")
+const configApiKey = Config.Redacted("OPENAI_API_KEY")

 OpenAIChat.route.model({ id: "gpt-4.1-mini" })

@@ -4,6 +4,22 @@ import { Anthropic } from "../../src/providers.js"
 const model = Anthropic.provider.model("claude-sonnet-4-5")

 LLM.request({ model, prompt: "Hello", providerOptions: { thinking: { type: "adaptive" } } })
+LLM.request({
+  model,
+  prompt: "Hello",
+  providerOptions: {
+    serviceTier: "future-tier",
+    thinking: { type: "adaptive", display: "future-display" },
+  },
+})
+LLM.request({
+  model,
+  prompt: "Hello",
+  providerOptions: {
+    // @ts-expect-error Anthropic cache TTL values are protocol constraints.
+    cacheControl: { type: "ephemeral", ttl: "future-ttl" },
+  },
+})

 LLM.request({
  model,
@@ -215,13 +215,31 @@ describe("Anthropic Messages route", () => {
    }),
  )

+  it.effect("forwards unknown values for pass-through string enums", () =>
+    Effect.gen(function* () {
+      const prepared = yield* compileRequest(
+        LLMRequest.update(request, {
+          providerOptions: {
+            service_tier: "future-tier",
+            thinking: { type: "adaptive", display: "future-display" },
+          },
+        }),
+      )
+
+      expect(prepared.body).toMatchObject({
+        service_tier: "future-tier",
+        thinking: { type: "adaptive", display: "future-display" },
+      })
+    }),
+  )
+
  it.effect("ignores unknown provider options and rejects malformed known ones", () =>
    Effect.gen(function* () {
      const prepared = yield* compileRequest(LLMRequest.update(request, { providerOptions: { unknownOption: true } }))
      const malformed = [
-        { service_tier: "fast" },
+        { service_tier: 1 },
        { metadata: { user_id: 42 } },
-        { cache_control: { type: "ephemeral", ttl: "2h" } },
+        { cache_control: { type: "ephemeral", ttl: "future-ttl" } },
        { output_config: { format: { type: "text" } } },
        { thinking: { type: "automatic" } },
      ]
@@ -11,66 +11,78 @@ import { sseEvents } from "../lib/sse.js"

 const decodeEvent = Schema.decodeUnknownEffect(OpenResponses.protocol.stream.event)

-it.effect("normalizes flat errors in shared SSE and WebSocket decoding", () =>
+it.effect("decodes error frames verbatim in shared SSE and WebSocket decoding", () =>
  Effect.gen(function* () {
-    const frame = {
-      type: "error",
-      sequence_number: 4,
-      code: "server_shutting_down",
-      message: "Server is shutting down. Please retry your request.",
-      param: null,
-    }
    for (const decode of [decodeEvent, OpenResponses.decodeChannelEvent]) {
-      const event = yield* decode(JSON.stringify(frame))
-      expect(event).toEqual({
-        type: "error",
-        sequence_number: 4,
-        error: { code: frame.code, message: frame.message, param: null },
-      })
-
-      for (const unchanged of [
-        event,
+      for (const frame of [
+        { type: "error", sequence_number: 4, code: "server_shutting_down", message: "Shutting down", param: null },
        { type: "error" },
+        { type: "error", error: "Gateway failed" },
+        { type: "error", error: { code: 429, message: "slow down" } },
+        { type: "error", error: 42 },
+        { type: "error", code: 500, message: ["not", "a", "string"] },
+        { type: "response.failed", response: { id: "resp_failed", error: "Gateway failed" } },
+        { type: "response.failed", response: { id: "resp_failed", error: ["weird"] } },
        {
          type: "response.failed",
          response: { id: "resp_failed", error: { code: "server_error", message: "Internal server error" } },
        },
        { type: "response.output_text.delta", item_id: "msg_text", delta: "Hello" },
      ]) {
-        expect(yield* decode(JSON.stringify(unchanged))).toEqual(unchanged)
+        expect(yield* decode(JSON.stringify(frame))).toEqual(frame)
      }
    }
  }),
 )

-it.effect("continues to normalize untyped xAI WebSocket errors", () =>
+it.effect("reads bare WebSocket error envelopes as error events", () =>
  Effect.gen(function* () {
    const message = "gRPC error: Response with id=resp_missing not found"
-    for (const error of [{ type: "api_error", message }, message]) {
-      expect(yield* OpenResponses.decodeChannelEvent(JSON.stringify({ error }))).toEqual({
-        type: "error",
-        error: typeof error === "string" ? { message } : error,
-      })
+    for (const error of [{ type: "api_error", message }, message, 42]) {
+      expect(yield* OpenResponses.decodeChannelEvent(JSON.stringify({ error }))).toEqual({ type: "error", error })
+    }
+    for (const frame of [{ error: null }, { message }]) {
+      expect(yield* OpenResponses.decodeChannelEvent(JSON.stringify(frame)).pipe(Effect.flip)).toBeDefined()
    }
  }),
 )

-it.effect("normalizes string errors in shared SSE and WebSocket decoding", () =>
+it.effect("extracts error details from every shape and falls back to the raw frame", () =>
  Effect.gen(function* () {
-    for (const decode of [decodeEvent, OpenResponses.decodeChannelEvent]) {
-      expect(yield* decode(JSON.stringify({ type: "error", error: "Gateway failed" }))).toEqual({
-        type: "error",
-        error: { message: "Gateway failed" },
-      })
-      expect(
-        yield* decode(
-          JSON.stringify({ type: "response.failed", response: { id: "resp_failed", error: "Gateway failed" } }),
-        ),
-      ).toEqual({
-        type: "response.failed",
-        response: { id: "resp_failed", error: { message: "Gateway failed" } },
-      })
+    const cases: Array<[frame: Record<string, unknown>, message: string, tag: string]> = [
+      [
+        { type: "error", code: "server_shutting_down", message: "Shutting down" },
+        "server_shutting_down: Shutting down",
+        "UnknownProvider",
+      ],
+      [{ type: "error", error: "Gateway failed" }, "Gateway failed", "UnknownProvider"],
+      [{ type: "error", error: { code: 429, message: "slow down" } }, "429: slow down", "UnknownProvider"],
+      [{ type: "error", error: { message: "slow down" }, status: 429 }, "slow down", "RateLimit"],
+      [{ type: "error", code: 500, message: ["not", "a", "string"] }, "500", "UnknownProvider"],
+      [
+        { type: "response.failed", response: { id: "resp_failed", error: "Gateway failed" } },
+        "Gateway failed",
+        "UnknownProvider",
+      ],
+    ]
+    for (const [frame, message, tag] of cases) {
+      const event = yield* OpenResponses.decodeChannelEvent(JSON.stringify(frame))
+      const error = OpenResponses.providerFailure(event, "fallback", JSON.stringify(frame))
+      expect(error.message).toBe(message)
+      expect(error.reason._tag).toBe(tag)
+      expect(error.reason.body).toBe(JSON.stringify(frame))
    }
+    for (const frame of [
+      { type: "error", error: 42 },
+      { type: "response.failed", response: { id: "resp_failed", error: ["weird"] } },
+    ]) {
+      const event = yield* OpenResponses.decodeChannelEvent(JSON.stringify(frame))
+      const error = OpenResponses.providerFailure(event, "fallback", JSON.stringify(frame))
+      expect(error.message).toBe(JSON.stringify(frame))
+      expect(error.reason._tag).toBe("UnknownProvider")
+    }
+    expect(OpenResponses.providerFailure({ type: "error" }, "fallback", "{}").message).toBe("fallback")
+    expect(OpenResponses.providerFailure({ type: "error" }, "fallback", "{}").reason._tag).toBe("ProviderInternal")
  }),
 )

@@ -19,6 +19,13 @@ export function mountBrowserPane() {
      session: "Alpha",
      mounted: true,
      visible: true,
+      url: undefined as string | undefined,
+      loading: false,
+      generation: 0,
+      delayNavigation: false,
+      pendingURL: undefined as string | undefined,
+      loadErrors: {} as Record<string, string | undefined>,
+      error: undefined as string | undefined,
      layouts: {} as Record<string, BrowserPaneLayout | undefined>,
    })
    const tabs = ["Alpha", "Beta"].map((name) => ({
@@ -47,13 +54,33 @@ export function mountBrowserPane() {
      opened: () => !!registrations.get(store.session),
      state: () => ({ tabs: tabs.filter((tab) => tab.title === store.session), focusedTabID: null }),
      tabs: () => tabs.filter((tab) => tab.title === store.session),
-      active: () => tabs.find((tab) => tab.title === store.session) ?? tabs[0],
+      active: () => {
+        const tab = tabs.find((tab) => tab.title === store.session) ?? tabs[0]
+        return {
+          ...tab,
+          url: store.url ?? tab.url,
+          loading: store.loading,
+          generation: store.generation,
+          loadError: store.loadErrors[store.session],
+        }
+      },
      registration: () => registrations.get(store.session),
-      error: () => undefined,
+      error: () => store.error ?? (store.loadErrors[store.session] ? "Request failed" : undefined),
      suspended: () => false,
      close: () => undefined,
      open: () => undefined,
-      command: () => undefined,
+      command: (command) => {
+        setStore("error", undefined)
+        if (command.type === "navigate" || command.type === "reload") setStore("loadErrors", store.session, undefined)
+        if (command.type === "navigate") {
+          if (store.delayNavigation) {
+            setStore("pendingURL", command.url)
+            return
+          }
+          setStore({ url: command.url, loading: false, generation: store.generation + 1 })
+        }
+        if (command.type === "stop") setStore("loading", false)
+      },
    }
    return (
      <>
@@ -64,6 +91,32 @@ export function mountBrowserPane() {
            {(name) => <button onClick={() => setStore({ session: name, mounted: name !== "Empty" })}>{name}</button>}
          </For>
          <button onClick={() => setStore("mounted", false)}>Unmount pane</button>
+          <button onClick={() => setStore({ url: "about:blank", loading: false })}>Blank page</button>
+          <button onClick={() => setStore({ url: "about:blank", loading: true })}>Loading page</button>
+          <button
+            onClick={() =>
+              setStore({ loading: true, generation: store.generation + 1, loadErrors: { [store.session]: undefined } })
+            }
+          >
+            Load current page
+          </button>
+          <button onClick={() => setStore("loadErrors", store.session, "ERR_CONNECTION_REFUSED")}>Failed page</button>
+          <button onClick={() => setStore("delayNavigation", true)}>Delay navigation</button>
+          <button onClick={() => setStore({ error: "ERR_BLOCKED_BY_CLIENT", pendingURL: undefined })}>
+            Block navigation
+          </button>
+          <button
+            onClick={() =>
+              setStore({
+                url: store.pendingURL,
+                pendingURL: undefined,
+                loading: false,
+                generation: store.generation + 1,
+              })
+            }
+          >
+            Complete navigation
+          </button>
          <button onClick={() => setStore("visible", (visible) => !visible)}>Toggle Review tab</button>
        </nav>
        <div style={{ width: "640px", height: "360px", border: "1px solid #555" }}>
@@ -57,3 +57,153 @@ story("hides the native view immediately while the pane stays mounted", async ({
  await toggle.click()
  await expect(root.getByTestId("native-Alpha")).toHaveAttribute("data-visible", "true")
 })
+
+story("shows the empty state over a blank native page and restores navigation", async ({ page }) => {
+  const root = page.getByTestId("browser-pane-fixture")
+  await root.getByRole("button", { name: "Blank page", exact: true }).click()
+  await expect(root.getByText("Enter URL", { exact: true })).toBeVisible()
+  await expect(root.getByText('Or prompt "Open in the app browser"', { exact: true })).toBeVisible()
+  await expect(root.getByTestId("native-Alpha")).toHaveAttribute("data-visible", "false")
+  await expect(root.getByRole("button", { name: "Reload", exact: true })).toBeDisabled()
+
+  const address = root.getByRole("textbox", { name: "Browser address", exact: true })
+  await address.fill("https://example.com/")
+  await expect(root.getByText("Enter URL", { exact: true })).toBeVisible()
+  await address.press("Enter")
+  await expect(address).not.toBeFocused()
+  await expect(root.getByText("Enter URL", { exact: true })).toBeHidden()
+  await expect(root.getByTestId("native-Alpha")).toHaveAttribute("data-visible", "true")
+  await expect(root.getByRole("button", { name: "Reload", exact: true })).toBeEnabled()
+})
+
+story("keeps Stop available and hides the empty state while a blank page loads", async ({ page }) => {
+  const root = page.getByTestId("browser-pane-fixture")
+  await root.getByRole("button", { name: "Loading page", exact: true }).click()
+  await expect(root.getByText("Enter URL", { exact: true })).toBeHidden()
+  await root.getByRole("button", { name: "Stop", exact: true }).click()
+  await expect(root.getByText("Enter URL", { exact: true })).toBeVisible()
+  await expect(root.getByTestId("native-Alpha")).toHaveAttribute("data-visible", "false")
+})
+
+story("keeps the submitted URL visible until the browser reports navigation", async ({ page }) => {
+  const root = page.getByTestId("browser-pane-fixture")
+  await root.getByRole("button", { name: "Blank page", exact: true }).click()
+  await root.getByRole("button", { name: "Delay navigation", exact: true }).click()
+  const address = root.getByRole("textbox", { name: "Browser address", exact: true })
+  await address.fill("https://example.com/")
+  await address.press("Enter")
+  await expect(address).not.toBeFocused()
+  await expect(address).toHaveValue("https://example.com/")
+  await expect(root.getByText("Enter URL", { exact: true })).toBeHidden()
+
+  await root.getByRole("button", { name: "Complete navigation", exact: true }).click()
+  await expect(root.getByTestId("native-Alpha")).toHaveAttribute("data-visible", "true")
+  await expect(address).toHaveValue("https://example.com/")
+
+  await address.fill("https://unsubmitted.example/")
+  await root.getByRole("button", { name: "Delay navigation", exact: true }).click()
+  await expect(address).toHaveValue("https://example.com/")
+})
+
+story("restores the current URL when a submitted navigation is blocked", async ({ page }) => {
+  const root = page.getByTestId("browser-pane-fixture")
+  await root.getByRole("button", { name: "Delay navigation", exact: true }).click()
+  const address = root.getByRole("textbox", { name: "Browser address", exact: true })
+  await address.fill("https://blocked.example/")
+  await address.press("Enter")
+  await expect(address).toHaveValue("https://blocked.example/")
+  await root.getByRole("button", { name: "Block navigation", exact: true }).click()
+  await expect(root.getByText("ERR_BLOCKED_BY_CLIENT", { exact: true })).toBeVisible()
+  await expect(address).toHaveValue("https://alpha.example/")
+  await expect(root.getByTestId("native-Alpha")).toHaveAttribute("data-visible", "true")
+})
+
+story("shows a themed failure state for only the failed tab and allows retry", async ({ page }) => {
+  const root = page.getByTestId("browser-pane-fixture")
+  await root.getByRole("button", { name: "Failed page", exact: true }).click()
+  await expect(root.getByText("URL can't be reached", { exact: true })).toBeVisible()
+  await expect(root.getByText("Check the URL and your connection, then try again.", { exact: true })).toBeVisible()
+  await expect(root.getByText("Request failed", { exact: true })).toBeHidden()
+  await expect(root.getByTestId("native-Alpha")).toHaveAttribute("data-visible", "false")
+  await expect(root.getByRole("textbox", { name: "Browser address", exact: true })).toHaveValue(
+    "https://alpha.example/",
+  )
+
+  await root.getByRole("button", { name: "Beta", exact: true }).click()
+  await expect(root.getByText("URL can't be reached", { exact: true })).toBeHidden()
+  await expect(root.getByTestId("native-Beta")).toHaveAttribute("data-visible", "true")
+  await root.getByRole("button", { name: "Alpha", exact: true }).click()
+  await expect(root.getByText("URL can't be reached", { exact: true })).toBeVisible()
+
+  await root.getByRole("button", { name: "Reload", exact: true }).click()
+  await expect(root.getByText("URL can't be reached", { exact: true })).toBeHidden()
+  await expect(root.getByTestId("native-Alpha")).toHaveAttribute("data-visible", "true")
+})
+
+story("returns a failed tab to the empty state when an empty URL is submitted", async ({ page }) => {
+  const root = page.getByTestId("browser-pane-fixture")
+  await root.getByRole("button", { name: "Failed page", exact: true }).click()
+  await expect(root.getByText("URL can't be reached", { exact: true })).toBeVisible()
+  await root.getByRole("button", { name: "Delay navigation", exact: true }).click()
+
+  const address = root.getByRole("textbox", { name: "Browser address", exact: true })
+  await address.fill("")
+  await address.press("Enter")
+  await expect(address).not.toBeFocused()
+  await expect(address).toHaveValue("")
+  await root.getByRole("button", { name: "Load current page", exact: true }).click()
+  await expect(root.getByRole("button", { name: "Stop", exact: true })).toBeEnabled()
+  await root.getByRole("button", { name: "Complete navigation", exact: true }).click()
+  await expect(root.getByText("URL can't be reached", { exact: true })).toBeHidden()
+  await expect(root.getByText("Enter URL", { exact: true })).toBeVisible()
+  await expect(root.getByRole("button", { name: "Reload", exact: true })).toBeDisabled()
+  await expect(root.getByTestId("native-Alpha")).toHaveAttribute("data-visible", "false")
+})
+
+story("selects the full URL when the address field gains focus", async ({ page }) => {
+  const root = page.getByTestId("browser-pane-fixture")
+  const address = root.getByRole("textbox", { name: "Browser address", exact: true })
+  await address.click()
+  await expect(address).toHaveJSProperty("selectionStart", 0)
+  await expect(address).toHaveJSProperty("selectionEnd", "https://alpha.example/".length)
+  await address.pressSequentially("https://example.com/")
+  await expect(address).toHaveValue("https://example.com/")
+  await address.press("Enter")
+  await expect(address).not.toBeFocused()
+  await address.focus()
+  await expect(address).toHaveJSProperty("selectionStart", 0)
+  await expect(address).toHaveJSProperty("selectionEnd", "https://example.com/".length)
+  await address.press("ArrowRight")
+  await address.click()
+  await expect(address).toHaveJSProperty("selectionStart", 0)
+  await expect(address).toHaveJSProperty("selectionEnd", "https://example.com/".length)
+})
+
+story("keeps the current page visible while a submitted URL loads", async ({ page }) => {
+  const root = page.getByTestId("browser-pane-fixture")
+  await root.getByRole("button", { name: "Delay navigation", exact: true }).click()
+  const address = root.getByRole("textbox", { name: "Browser address", exact: true })
+  await address.fill("https://example.com/")
+  await address.press("Enter")
+  await expect(root.getByTestId("native-Alpha")).toHaveAttribute("data-visible", "true")
+  await expect(address).toHaveValue("https://example.com/")
+
+  await root.getByRole("button", { name: "Load current page", exact: true }).click()
+  await expect(root.getByRole("button", { name: "Stop", exact: true })).toBeEnabled()
+  await expect(root.getByTestId("native-Alpha")).toHaveAttribute("data-visible", "true")
+  await root.getByRole("button", { name: "Complete navigation", exact: true }).click()
+  await expect(root.getByTestId("native-Alpha")).toHaveAttribute("data-visible", "true")
+  await expect(address).toHaveValue("https://example.com/")
+})
+
+story("keeps the current page and restores its URL when an empty address is submitted", async ({ page }) => {
+  const root = page.getByTestId("browser-pane-fixture")
+  const address = root.getByRole("textbox", { name: "Browser address", exact: true })
+  await address.fill("")
+  await address.press("Enter")
+  await expect(address).not.toBeFocused()
+  await expect(address).toHaveValue("https://alpha.example/")
+  await expect(root.getByTestId("native-Alpha")).toHaveAttribute("data-visible", "true")
+  await expect(root.getByText("Enter URL", { exact: true })).toBeHidden()
+  await expect(root.getByRole("button", { name: "Reload", exact: true })).toBeEnabled()
+})
@@ -0,0 +1,110 @@
+import { expect, test, type Locator, type Page } from "@playwright/test"
+import { fixture, pageMessages } from "../smoke/session-timeline.fixture"
+import { mockOpenCodeServer } from "../utils/mock-server"
+
+test.use({ viewport: { width: 390, height: 844 }, hasTouch: true, isMobile: true })
+
+test.beforeEach(async ({ page }) => {
+  await mockOpenCodeServer(page, {
+    sessions: fixture.sessions,
+    provider: fixture.provider,
+    directory: fixture.directory,
+    project: fixture.project,
+    pageMessages,
+  })
+  await page.addInitScript(
+    ({ directory, server, sessions }) => {
+      localStorage.setItem(
+        "opencode.global.dat:server",
+        JSON.stringify({ projects: { local: [{ worktree: directory, expanded: true }] } }),
+      )
+      localStorage.setItem(
+        "opencode.window.browser.dat:tabs",
+        JSON.stringify(sessions.map((session) => ({ type: "session", server, sessionId: session.id }))),
+      )
+    },
+    { directory: fixture.directory, server: fixture.serverKey, sessions: fixture.sessions },
+  )
+  await page.goto("/")
+  await page.locator('[data-slot="mobile-tabs-trigger"]').click()
+  await expect(page.locator('[data-slot="mobile-tabs-drawer"]')).toBeVisible()
+  const drawer = page.locator('[data-slot="mobile-drawer-content"]')
+  await expect
+    .poll(() => drawer.evaluate((element) => new DOMMatrixReadOnly(getComputedStyle(element).transform).m42))
+    .toBe(0)
+  await expect(drawer).not.toHaveAttribute("data-transitioning")
+})
+
+test("reorders session tabs with touch", async ({ page }) => {
+  const tabs = page.locator('[data-slot="vertical-tabs"] a')
+  await expect(tabs).toContainText([fixture.expected.sourceTitle, fixture.expected.targetTitle])
+
+  const target = tabs.filter({ hasText: fixture.expected.targetTitle })
+  const source = tabs.filter({ hasText: fixture.expected.sourceTitle })
+  const targetBox = await target.boundingBox()
+  const sourceBox = await source.boundingBox()
+  expect(targetBox).not.toBeNull()
+  expect(sourceBox).not.toBeNull()
+
+  await touchDrag(page, source, {
+    from: { x: sourceBox!.x + sourceBox!.width / 2, y: sourceBox!.y + sourceBox!.height / 2 },
+    to: { x: targetBox!.x + targetBox!.width / 2, y: targetBox!.y + targetBox!.height / 2 },
+  })
+
+  await expect(tabs).toContainText([fixture.expected.targetTitle, fixture.expected.sourceTitle])
+})
+
+test("dismisses a touch context menu by tapping outside", async ({ page }) => {
+  const drawer = page.locator('[data-slot="mobile-tabs-drawer"]')
+  const tab = drawer.locator('[data-slot="tab-link"]').filter({ hasText: fixture.expected.sourceTitle })
+  const home = drawer.getByRole("button", { name: "Home", exact: true })
+  const homeBox = await home.boundingBox()
+  const box = await tab.boundingBox()
+  expect(homeBox).not.toBeNull()
+  expect(box).not.toBeNull()
+  const point = { x: box!.x + box!.width / 2, y: box!.y + box!.height / 2 }
+
+  await tab.dispatchEvent("pointerdown", {
+    pointerType: "touch",
+    pointerId: 1,
+    isPrimary: true,
+    clientX: point.x,
+    clientY: point.y,
+  })
+  const rename = page.getByRole("menuitem", { name: "Rename", exact: true })
+  await expect(rename).toBeVisible()
+  await expect(drawer).toBeVisible()
+  await tab.filter({ visible: true }).dispatchEvent("pointerup", {
+    pointerType: "touch",
+    pointerId: 1,
+    isPrimary: true,
+    clientX: point.x,
+    clientY: point.y,
+  })
+
+  await page.touchscreen.tap(homeBox!.x + homeBox!.width / 2, homeBox!.y + homeBox!.height / 2)
+  await expect(rename).toBeHidden()
+  await expect(drawer).toBeVisible()
+})
+
+async function touchDrag(
+  page: Page,
+  source: Locator,
+  input: { from: { x: number; y: number }; to: { x: number; y: number } },
+) {
+  const client = await page.context().newCDPSession(page)
+  await client.send("Input.dispatchTouchEvent", {
+    type: "touchStart",
+    touchPoints: [{ ...input.from, id: 1 }],
+  })
+  await client.send("Input.dispatchTouchEvent", {
+    type: "touchMove",
+    touchPoints: [{ x: (input.from.x + input.to.x) / 2, y: (input.from.y + input.to.y) / 2, id: 1 }],
+  })
+  await expect(source).toHaveCount(2)
+  await client.send("Input.dispatchTouchEvent", {
+    type: "touchMove",
+    touchPoints: [{ ...input.to, id: 1 }],
+  })
+  await client.send("Input.dispatchTouchEvent", { type: "touchEnd", touchPoints: [] })
+}
@@ -71,7 +71,7 @@ for (const direction of ["ltr", "rtl"] as const) {
    const shifted = await content.evaluate((element) => getComputedStyle(element).translate)
    await content.evaluate((element) => element.setAttribute("data-summary-motion", ""))
    // Keep issuing resize events before the idle timer expires, including crossing the width cutoff.
-    for (const width of [1520, 1280, 1600]) {
+    for (const width of [1520, 1280, 1800]) {
      await page.setViewportSize({ width, height: 900 })
      await expect(panel).toHaveAttribute("data-summary-resizing", "true")
      await page.clock.runFor(100)
@@ -84,6 +84,7 @@ for (const direction of ["ltr", "rtl"] as const) {
    await expect(content).toHaveAttribute("data-summary-motion", "transitionrun,transitionend,")
    await expect(content).not.toHaveCSS("translate", shifted)
    await page.setViewportSize({ width: 1440, height: 900 })
+    await expect(panel).toHaveAttribute("data-summary-resizing", "false")
    await expect(content).toHaveCSS("translate", shifted)

    await content.evaluate((element) => element.setAttribute("data-summary-motion", ""))
@@ -112,7 +113,8 @@ for (const direction of ["ltr", "rtl"] as const) {
    await expect(summary).toBeVisible()

    await page.setViewportSize({ width: 1800, height: 900 })
-    await expect(content).toHaveCSS("translate", "0px")
+    await expect(panel).toHaveAttribute("data-summary-resizing", "false")
+    await expect(content).toHaveCSS("translate", "none")
    await expect(summary).toBeVisible()

    await page.emulateMedia({ reducedMotion: "reduce" })
@@ -166,6 +166,45 @@ test.describe("session timeline projection", () => {
    await expect(longNotice.locator("[title]")).toHaveAttribute("title", `Switched to ${longName}`)
    await expect.poll(() => longNotice.evaluate((element) => element.scrollWidth <= element.clientWidth)).toBe(true)
  })
+
+  test("does not repeat a review comment file as an attachment", async ({ page }) => {
+    const message = userMessage([
+      userText("what's goin on here", { id: "prt_user_review_comment" }),
+      {
+        id: "prt_user_review_file",
+        type: "file",
+        mime: "text/plain",
+        filename: "LiveRuntime.ts",
+        url: "file:///repo/LiveRuntime.ts?start=14&end=32",
+      },
+      {
+        id: "prt_user_unrelated_file",
+        type: "file",
+        mime: "text/plain",
+        filename: "notes.txt",
+        url: "data:text/plain;base64,bm90ZXM=",
+      },
+    ])
+    message.metadata = {
+      displayText: "what's goin on here",
+      comments: [
+        {
+          path: "LiveRuntime.ts",
+          comment: "what's goin on here",
+          selection: { startLine: 14, startChar: 0, endLine: 32, endChar: 0 },
+          origin: "review",
+        },
+      ],
+    }
+
+    await setupTimeline(page, { messages: [message, assistantMessage()] })
+
+    const user = page.locator('[data-component="user-message"]')
+    await expect(user.getByText("LiveRuntime.ts:14-32", { exact: true })).toBeVisible()
+    const attachments = user.locator('[data-slot="user-message-attachments"]')
+    await expect(attachments.getByText("LiveRuntime.ts", { exact: true })).toHaveCount(0)
+    await expect(attachments.getByText("notes.txt", { exact: true })).toBeVisible()
+  })
 })

 function patchFile(file: string, status: "added" | "modified" | "deleted") {
@@ -1,6 +1,6 @@
 {
  "name": "@opencode/app",
-  "version": "2.0.8",
+  "version": "2.0.11",
  "description": "",
  "type": "module",
  "exports": {
@@ -46,7 +46,6 @@
    "@sentry/vite-plugin": "catalog:",
    "@tailwindcss/vite": "4.3.3",
    "@types/bun": "catalog:",
-    "@types/luxon": "catalog:",
    "@types/node": "catalog:",
    "@typescript/native-preview": "catalog:",
    "diff": "catalog:",
@@ -88,7 +87,6 @@
    "effect": "catalog:",
    "fuzzysort": "catalog:",
    "ghostty-web": "github:anomalyco/ghostty-web#83c0a07b8628b748aed073b232cb4b52a6ca11c1",
-    "luxon": "catalog:",
    "qr-scanner": "1.4.2",
    "remeda": "catalog:",
    "solid-js": "catalog:",
@@ -1,6 +1,6 @@
 import { describe, expect, test } from "bun:test"
 import type { Prompt } from "@/composer/state"
-import { prependHistoryEntry, type PromptHistoryComment } from "./entry"
+import { prependHistoryEntry, removeHistoryEntry, type PromptHistoryComment } from "./entry"
 import { Schema } from "effect"
 import { PromptHistoryState } from "../schema"
 import { Persistence } from "@/runtime/persistence/schema"
@@ -36,6 +36,24 @@ describe("Composer history", () => {
    expect(dedupedComments).toBe(commentsOnly)
  })

+  test("removeHistoryEntry drops the entry recorded for a prompt and leaves others alone", () => {
+    const image: Prompt = [
+      { type: "text", content: "look", start: 0, end: 4 },
+      { type: "image", id: "img", filename: "big.png", mime: "image/png", blob: { id: "hash", url: "" } },
+    ]
+    const entries = prependHistoryEntry(prependHistoryEntry([], text("earlier")), image, [comment("c1")])
+    expect(entries).toHaveLength(2)
+
+    const untouched = removeHistoryEntry(entries, text("never sent"))
+    expect(untouched).toBe(entries)
+
+    const withoutComments = removeHistoryEntry(entries, image)
+    expect(withoutComments).toBe(entries)
+
+    const removed = removeHistoryEntry(entries, image, [comment("c1")])
+    expect(removed).toEqual(prependHistoryEntry([], text("earlier")))
+  })
+
  test("insertion isolates canonical entries from source mutations", () => {
    const prompt: Prompt = [
      {
@@ -48,6 +48,18 @@ export function prependHistoryEntry(
  return [entry, ...entries].slice(0, max)
 }

+// A send that failed puts its prompt back in the composer, so the entry recorded for it would
+// only duplicate the draft and keep its attachments referenced for as long as history holds it.
+export function removeHistoryEntry(
+  entries: PromptHistoryStoredEntry[],
+  prompt: Prompt,
+  comments: PromptHistoryComment[] = [],
+) {
+  const entry = { prompt, comments } satisfies PromptHistoryEntry
+  const next = entries.filter((item) => !isPromptEqual(item, entry))
+  return next.length === entries.length ? entries : next
+}
+
 function isCommentEqual(commentA: PromptHistoryComment, commentB: PromptHistoryComment) {
  return (
    commentA.path === commentB.path &&
@@ -4,6 +4,7 @@ import { Persist, persisted } from "@/runtime/persistence/storage"
 import {
  clonePromptHistoryComments,
  prependHistoryEntry,
+  removeHistoryEntry,
  type PromptHistoryComment,
  type PromptHistoryStoredEntry,
 } from "./entry"
@@ -13,6 +14,7 @@ import { PromptHistoryState } from "../schema"
 export type ComposerHistoryStore = {
  entries: (mode: "normal" | "shell") => PromptHistoryStoredEntry[]
  add: (prompt: Prompt, mode: "normal" | "shell", comments: PromptHistoryComment[]) => void
+  remove: (prompt: Prompt, mode: "normal" | "shell", comments: PromptHistoryComment[]) => void
 }

 type PromptHistoryState = typeof PromptHistoryState.Type
@@ -32,6 +34,13 @@ function createComposerHistoryStore(
      if (next === current.entries) return
      setCurrent("entries", next)
    },
+    remove(prompt, mode, comments) {
+      const current = mode === "shell" ? shell : normal
+      const setCurrent = mode === "shell" ? setShell : setNormal
+      const next = removeHistoryEntry(current.entries, prompt, comments)
+      if (next === current.entries) return
+      setCurrent("entries", next)
+    },
  }
 }

@@ -56,5 +65,12 @@ export function createComposerHistory() {
      const metadata = clonePromptHistoryComments(comments)
      void ready.then(() => history.add(saved, mode, metadata))
    },
+    remove(prompt: Prompt, mode: "normal" | "shell", comments: PromptHistoryComment[]) {
+      const ready = mode === "shell" ? shellInit : normalInit
+      if (!(ready instanceof Promise)) return history.remove(prompt, mode, comments)
+      const saved = clonePrompt(prompt)
+      const metadata = clonePromptHistoryComments(comments)
+      void ready.then(() => history.remove(saved, mode, metadata))
+    },
  }
 }
@@ -264,6 +264,7 @@ export function createComposerModel(adapter: ComposerAdapter, options?: { queue?
    editor: () => editor,
    queueScroll: () => requestAnimationFrame(() => editor?.scrollIntoView({ block: "nearest" })),
    addToHistory: (value, mode) => controller.addHistory(value, mode),
+    removeFromHistory: (value, mode, comments) => history.remove(value, mode, mode === "shell" ? [] : comments),
    resetHistory: () => controller.resetHistory(),
    setMode: (next) => controller.dispatch({ type: next === "shell" ? "mode.shell" : "mode.normal" }),
    closePopover: () => controller.dispatch({ type: "popover.close" }),
@@ -53,6 +53,7 @@ function submitInput(
  notify = { missingSelection() {}, failed(_kind: "shell" | "command" | "prompt", _error: unknown) {} },
  mode: "normal" | "shell" = "normal",
  commands: () => readonly { name: string }[] | undefined = () => [],
+  history: string[] = [],
 ) {
  return createComposerSubmit({
    adapter,
@@ -60,7 +61,9 @@ function submitInput(
    commands,
    editor: () => undefined,
    queueScroll() {},
-    addToHistory() {},
+    addToHistory: (prompt) => history.push(`add:${prompt.map((part) => ("content" in part ? part.content : part.type)).join("")}`),
+    removeFromHistory: (prompt) =>
+      history.push(`remove:${prompt.map((part) => ("content" in part ? part.content : part.type)).join("")}`),
    resetHistory() {},
    setMode() {},
    closePopover() {},
@@ -533,12 +536,8 @@ describe("Composer submission", () => {
      missingSelection() {},
      failed: () => (attempts.length === 2 ? first.resolve() : second.resolve()),
    }
-    const submission = submitInput(
-      adapter,
-      notify,
-      "normal",
-      () => [],
-    )
+    const history: string[] = []
+    const submission = submitInput(adapter, notify, "normal", () => [], history)

    await submission.submit(new Event("submit"))
    await first.promise
@@ -549,6 +548,8 @@ describe("Composer submission", () => {
    expect(new Set(attempts).size).toBe(1)
    expect(statuses).toEqual(["running", "idle", "running", "idle"])
    expect(state.current()).toMatchObject([{ type: "text", content: text }])
+    // The restored prompt is the draft again, so history does not also keep it (and its attachments).
+    expect(history).toEqual([`add:${text}`, `remove:${text}`, `add:${text}`, `remove:${text}`])
  })

  test("forwards structured mentions to custom commands", async () => {
@@ -32,6 +32,7 @@ type ComposerSubmitInput = {
  editor: () => HTMLDivElement | undefined
  queueScroll: () => void
  addToHistory: (prompt: Prompt, mode: "normal" | "shell") => void
+  removeFromHistory: (prompt: Prompt, mode: "normal" | "shell", comments: PromptHistoryComment[]) => void
  resetHistory: () => void
  setMode: (mode: "normal" | "shell") => void
  closePopover: () => void
@@ -250,6 +251,8 @@ function restoreSubmission(
 ) {
  const restored = submission.restore()
  if (!restored) return false
+  // The prompt is back in the composer; its history entry would only keep attachments referenced.
+  input.removeFromHistory(value.prompt, value.mode, comments)
  restored.target.set(restored.prompt, promptLength(restored.prompt))
  restored.target.mode.set(value.mode)
  restored.target.context.replaceComments(
@@ -3,7 +3,6 @@ import { useDialog } from "@opencode/ui/context/dialog"
 import { Button } from "@opencode/ui/button"
 import { DialogFooter, DialogHeader, DialogTitleGroup, Dialog } from "@opencode/ui/dialog"
 import { skipToken, useQuery, useQueryClient } from "@tanstack/solid-query"
-import { DateTime } from "luxon"
 import { type Accessor, createEffect, createMemo, type JSX, startTransition, untrack } from "solid-js"
 import { notifySessionTabsRemoved } from "@/shell/titlebar/session-events"
 import { useCommand } from "@/shell/commands/command"
@@ -327,19 +326,19 @@ export function homeSessionSearchKey(record: HomeSessionRecord) {
  return `${pathKey(record.session.location.directory)}:${record.session.id}`
 }

+// Calendar day in the local time zone, comparable as a number.
+function localDay(date: Date) {
+  return date.getFullYear() * 10_000 + date.getMonth() * 100 + date.getDate()
+}
+
 function groupSessions(records: HomeSessionRecord[], language: ReturnType<typeof useLanguage>): HomeSessionGroup[] {
-  const now = DateTime.local()
-  const yesterday = now.minus({ days: 1 })
-  const todaySessions = records.filter((record) =>
-    DateTime.fromMillis(record.session.time.updated ?? record.session.time.created).hasSame(now, "day"),
-  )
-  const yesterdaySessions = records.filter((record) =>
-    DateTime.fromMillis(record.session.time.updated ?? record.session.time.created).hasSame(yesterday, "day"),
-  )
-  const olderSessions = records.filter((record) => {
-    const time = DateTime.fromMillis(record.session.time.updated ?? record.session.time.created)
-    return !time.hasSame(now, "day") && !time.hasSame(yesterday, "day")
-  })
+  const now = new Date()
+  const today = localDay(now)
+  const yesterday = localDay(new Date(now.getFullYear(), now.getMonth(), now.getDate() - 1))
+  const day = (record: HomeSessionRecord) => localDay(new Date(record.session.time.updated ?? record.session.time.created))
+  const todaySessions = records.filter((record) => day(record) === today)
+  const yesterdaySessions = records.filter((record) => day(record) === yesterday)
+  const olderSessions = records.filter((record) => day(record) !== today && day(record) !== yesterday)
  const olderTitle =
    todaySessions.length === 0 && yesterdaySessions.length === 0
      ? language.t("sidebar.project.recentSessions")
@@ -65,14 +65,14 @@
  }

  /* Keep the 1000px conversation intact, with 320px for the summary and its gutters.
-     Move only as far as needed; wider panels already have enough space in the margin. */
-  @container session-chat (min-width: 1320px) {
+     When they overlap, center the conversation in the space that remains beside the summary. */
+  @container session-chat (min-width: 1320px) and (width < 1640px) {
    [data-slot="session-chat-panel"][data-summary-open="true"]
      :is([data-timeline-virtual-content], [data-component="session-composer-dock"] > div) {
-      --session-summary-translate: min(0px, calc(50cqi - 820px));
+      --session-summary-translate: -160px;

      &:dir(rtl) {
-        --session-summary-translate: max(0px, calc(820px - 50cqi));
+        --session-summary-translate: 160px;
      }
    }
  }
@@ -1,5 +1,4 @@
 import { type Accessor, createMemo } from "solid-js"
-import { DateTime } from "luxon"
 import { filter, firstBy, flat, groupBy, mapValues, pipe, uniqueBy, values } from "remeda"
 import { createSimpleContext } from "@opencode/ui/context"
 import { useProviders } from "@/providers/catalog/providers"
@@ -9,6 +8,8 @@ export type ModelKey = { providerID: string; modelID: string }

 type Visibility = "show" | "hide"
 const RECENT_LIMIT = 5
+// luxon's diffNow().as("months") used an average month; keep the same window.
+const sixMonths = 6 * 30.436875 * 24 * 60 * 60 * 1000

 function modelKey(model: ModelKey) {
  return `${model.providerID}:${model.modelID}`
@@ -29,27 +30,23 @@ const createModelsController = (directory: Accessor<string | undefined>) => {
    ),
  )

+  // Release dates as epoch ms; an unparseable date is NaN and never counts as recent.
  const release = createMemo(
    () =>
      new Map(
-        available().map((model) => {
-          const parsed = DateTime.fromISO(model.release_date)
-          return [modelKey({ providerID: model.provider.id, modelID: model.id }), parsed] as const
-        }),
+        available().map(
+          (model) => [modelKey({ providerID: model.provider.id, modelID: model.id }), Date.parse(model.release_date)] as const,
+        ),
      ),
  )

  const latest = createMemo(() =>
    pipe(
      available(),
-      filter(
-        (x) =>
-          Math.abs(
-            (release().get(modelKey({ providerID: x.provider.id, modelID: x.id })) ?? DateTime.invalid("invalid"))
-              .diffNow()
-              .as("months"),
-          ) < 6,
-      ),
+      filter((x) => {
+        const released = release().get(modelKey({ providerID: x.provider.id, modelID: x.id })) ?? NaN
+        return Math.abs(Date.now() - released) < sixMonths
+      }),
      groupBy((x) => x.provider.id),
      mapValues((models) =>
        pipe(
@@ -101,9 +98,8 @@ const createModelsController = (directory: Accessor<string | undefined>) => {
    if (state === "hide") return false
    if (state === "show") return true
    if (latestSet().has(key)) return true
-    const date = release().get(key)
-    if (!date?.isValid) return true
-    return false
+    // Models without a parseable release date stay visible.
+    return !Number.isFinite(release().get(key) ?? NaN)
  }

  const setVisibility = (model: ModelKey, state: boolean) => {
@@ -45,7 +45,7 @@ const Current = Persistence.struct({ session: SessionsSchema })

 export const ModelSelectionSchema = Persistence.migrate(
  Current,
-  Schema.Struct({
+  Persistence.legacy({
    session: Persistence.optional(Schema.Record(Schema.String, Schema.Unknown)),
    pick: Persistence.optional(Schema.Record(Schema.String, Schema.Unknown)),
  }).pipe(
@@ -906,6 +906,10 @@ export const dict = {
  "session.browser.replaced": "Browser control moved to another desktop window.",
  "session.browser.suspended": "Browser suspended. Interact with this session to reconnect.",
  "session.browser.address.placeholder": "Enter URL",
+  "session.browser.empty.title": "Enter URL",
+  "session.browser.empty.description": 'Or prompt "Open in the app browser"',
+  "session.browser.failed.title": "URL can't be reached",
+  "session.browser.failed.description": "Check the URL and your connection, then try again.",

  "titlebar.update": "Update",
  "titlebar.tabs": "Tabs",
@@ -32,7 +32,7 @@ describe("persistence schemas", () => {

  test("legacy migration observes missing fields before initial defaults are applied", () => {
    const current = Persistence.struct({ mode: Schema.Literals(["compact", "full"]), enabled: Schema.Boolean })
-    const stored = Schema.Struct({
+    const stored = Persistence.legacy({
      mode: Schema.optional(Schema.Unknown),
      expanded: Schema.optional(Schema.Boolean),
    }).pipe(
@@ -53,6 +53,38 @@ describe("persistence schemas", () => {
    expect(Schema.encodeSync(schema)(decode({ expanded: true }))).toEqual({ mode: "full", enabled: true })
  })

+  test("legacy read shapes carry unknown nested fields through to the current schema", () => {
+    const current = Persistence.struct({
+      general: Persistence.struct({
+        mode: Schema.Literals(["compact", "full"]),
+        theme: Schema.String,
+        nested: Persistence.struct({ keep: Schema.Boolean }),
+      }),
+      other: Persistence.struct({ flag: Schema.Boolean }),
+    })
+    const stored = Persistence.legacy({
+      general: Persistence.optional(Persistence.legacy({ expanded: Persistence.optional(Schema.Boolean) })),
+    }).pipe(
+      Schema.decode({
+        decode: SchemaGetter.transform((value) => {
+          const general = value.general
+          if (!general || general.expanded === undefined) return value
+          return { ...value, general: { ...general, mode: general.expanded ? "full" : "compact" } }
+        }),
+        encode: SchemaGetter.passthrough(),
+      }),
+    )
+    const schema = Persistence.withInitial(Persistence.migrate(current, stored), {
+      general: { mode: "compact", theme: "light", nested: { keep: false } },
+      other: { flag: false },
+    })
+    const decode = Schema.decodeUnknownSync(schema)
+    expect(decode({ general: { expanded: true, theme: "dark", nested: { keep: true } }, other: { flag: true } })).toEqual({
+      general: { mode: "full", theme: "dark", nested: { keep: true } },
+      other: { flag: true },
+    })
+  })
+
  test("initial merging preserves field codecs and replaces arrays rather than merging indexes", () => {
    const current = Persistence.struct({
      amount: Schema.NumberFromString.check(Schema.isFinite()),
@@ -23,13 +23,11 @@ export function withInitial<S extends Schema.ConstraintCodec<object, unknown>>(
  initial: NoInfer<S["Type"]>,
 ) {
  const schema = isMigrated(definition) ? definition.current : definition
-  const read = isMigrated(definition)
-    ? SchemaParser.decodeUnknownResult(definition.read, { onExcessProperty: "preserve" })
-    : Result.succeed<unknown>
+  const read = isMigrated(definition) ? SchemaParser.decodeUnknownResult(definition.read) : Result.succeed<unknown>
  const encode = Schema.encodeUnknownSync(schema)
  return Schema.Unknown.pipe(
    Schema.decode<Schema.Unknown>({
-      decode: SchemaGetter.transformOrFail((value) =>
+      decode: SchemaGetter.transformEffect((value) =>
        Effect.fromResult(Result.map(read(value), (stored) => merge(initial, recover(schema.ast, stored, initial)))),
      ),
      encode: SchemaGetter.transform((value) => encode(value)),
@@ -38,6 +36,12 @@ export function withInitial<S extends Schema.ConstraintCodec<object, unknown>>(
  )
 }

+// A legacy read shape declares only the fields it migrates. Decoding strips unknown keys, so every
+// struct level in a `migrate` read schema must stay open for the current fields it does not name.
+export function legacy<const Fields extends Schema.Struct.Fields>(fields: Fields) {
+  return Schema.StructWithRest(Schema.Struct(fields), [Schema.Record(Schema.String, Schema.Unknown)])
+}
+
 // Object-level codecs own their recovery. Plain structs can recover fields independently.
 function recover(ast: SchemaAST.AST, value: unknown, initial: unknown): unknown {
  if (value === undefined) return initial
@@ -53,7 +53,7 @@ const State = Persistence.struct({
 export function serverState(canonicalLocalServer: () => string | undefined = () => undefined) {
  return Persistence.migrate(
    State,
-    Schema.Struct({ projects: Projects, lastProject: LastProject }).pipe(
+    Persistence.legacy({ projects: Projects, lastProject: LastProject }).pipe(
      Schema.decode({
        decode: SchemaGetter.transform((value) => {
          const canonical = canonicalLocalServer()
@@ -20,13 +20,18 @@ export function SessionBrowserPane(props: { browser: ReturnType<typeof createSes
  const command = useCommand()
  const state = props.browser.active
  const address = () => (state()?.url === "about:blank" ? "" : (state()?.url ?? ""))
+  const failed = () => !!state()?.loadError
  const registration = props.browser.registration
  const button = { variant: "ghost", size: "large" } as const
  const [store, setStore] = createStore({
    address: "",
    editing: false,
+    submitted: false,
+    // A submitted navigation the browser has not reported yet; keeps the empty state hidden meanwhile.
+    navigating: false,
    visible: typeof document === "undefined" || document.visibilityState === "visible",
  })
+  const empty = () => !address() && !state()?.loading && !store.navigating
  let surface: HTMLDivElement | undefined
  let addressDisplay: HTMLDivElement | undefined
  let frame: number | undefined
@@ -43,7 +48,7 @@ export function SessionBrowserPane(props: { browser: ReturnType<typeof createSes
      title: language.t("command.browser.reload"),
      category: language.t("command.category.view"),
      keybind: "f5",
-      disabled: !props.visible || !state(),
+      disabled: !props.visible || !address(),
      onSelect: () => {
        const tab = state()
        if (tab) props.browser.command({ type: "reload", tabID: tab.id })
@@ -71,7 +76,9 @@ export function SessionBrowserPane(props: { browser: ReturnType<typeof createSes
    const top = Math.round(rect.top * zoom)
    const right = Math.round(rect.right * zoom)
    const bottom = Math.round(rect.bottom * zoom)
-    const visible = props.visible && store.visible && !dialog.active && !covered(rect)
+    // The desktop page hides blank and loading documents itself; only hide here
+    // while the pane shows its own empty or failed state over the surface.
+    const visible = props.visible && store.visible && !empty() && !failed() && !dialog.active && !covered(rect)
    // The cutout exposes the app backdrop outside the rounded Review card,
    // not the browser surface inside it.
    const color = getComputedStyle(
@@ -107,7 +114,25 @@ export function SessionBrowserPane(props: { browser: ReturnType<typeof createSes
    if (frame === undefined) frame = requestAnimationFrame(tick)
  }

-  createEffect(() => !store.editing && setStore("address", address()))
+  createEffect(on([() => state()?.id, address], () => !store.editing && setStore("address", address())))
+  // Any reported movement, including a rejected or blocked request, ends the submitted navigation.
+  createEffect(
+    on(
+      [() => state()?.id, () => state()?.generation, () => state()?.loading, () => props.browser.error()],
+      () => setStore("navigating", false),
+      { defer: true },
+    ),
+  )
+  // A blocked or rejected submission leaves the page where it was; show that page's URL again.
+  createEffect(
+    on(
+      () => props.browser.error(),
+      (error) => {
+        if (error && !store.editing) setStore("address", address())
+      },
+      { defer: true },
+    ),
+  )
  createEffect(
    on(registration, (current) => {
      // Session routes can change before this pane unmounts. Hide the registration
@@ -123,6 +148,8 @@ export function SessionBrowserPane(props: { browser: ReturnType<typeof createSes
        () => store.visible,
        () => props.visible,
        () => state()?.id,
+        empty,
+        failed,
        registration,
      ],
      () => {
@@ -157,7 +184,7 @@ export function SessionBrowserPane(props: { browser: ReturnType<typeof createSes

  return (
    <aside id="browser-panel" class="relative size-full min-w-0 overflow-hidden bg-v2-background-bg-base flex flex-col">
-      <div class="h-10 shrink-0 flex items-center gap-1 px-2 border-b border-v2-border-border-muted">
+      <div class="h-10 shrink-0 flex items-center gap-1 px-3 border-b border-v2-border-border-muted">
        <For each={["back", "forward"] as const}>
          {(direction) => (
            <Tooltip placement="top" value={language.t(direction === "back" ? "common.goBack" : "common.goForward")}>
@@ -193,7 +220,7 @@ export function SessionBrowserPane(props: { browser: ReturnType<typeof createSes
        >
          <IconButton
            {...button}
-            disabled={!state()}
+            disabled={!state()?.loading && !address()}
            aria-label={language.t(state()?.loading ? "prompt.action.stop" : "error.page.action.reload")}
            onClick={() => {
              const tab = state()
@@ -212,8 +239,13 @@ export function SessionBrowserPane(props: { browser: ReturnType<typeof createSes
          onSubmit={(event) => {
            event.preventDefault()
            const tab = state()
-            if (tab && store.address.trim())
-              props.browser.command({ type: "navigate", tabID: tab.id, url: store.address })
+            const url = store.address.trim()
+            if (!tab) return
+            if (url || failed()) {
+              setStore({ submitted: true, address: url, navigating: true })
+              props.browser.command({ type: "navigate", tabID: tab.id, url: url || "about:blank" })
+            }
+            event.currentTarget.querySelector("input")?.blur()
          }}
        >
          <input
@@ -224,8 +256,14 @@ export function SessionBrowserPane(props: { browser: ReturnType<typeof createSes
            disabled={!state()}
            placeholder={language.t("session.browser.address.placeholder")}
            aria-label={language.t("session.browser.address")}
-            onFocus={() => setStore("editing", true)}
-            onBlur={() => setStore({ editing: false, address: address() })}
+            onFocus={(event) => {
+              setStore("editing", true)
+              event.currentTarget.select()
+            }}
+            onClick={(event) => event.currentTarget.select()}
+            onBlur={() =>
+              setStore({ editing: false, address: store.submitted ? store.address : address(), submitted: false })
+            }
            onInput={(event) => setStore("address", event.currentTarget.value)}
            onScroll={(event) => {
              if (addressDisplay) addressDisplay.scrollLeft = event.currentTarget.scrollLeft
@@ -243,12 +281,27 @@ export function SessionBrowserPane(props: { browser: ReturnType<typeof createSes
          </div>
        </form>
      </div>
-      <Show when={props.browser.error()}>
+      <Show when={props.browser.error() && !failed()}>
        <div class="shrink-0 px-3 py-1.5 text-12-regular text-text-danger-base border-b border-v2-border-border-muted">
          {props.browser.error()}
        </div>
      </Show>
      <div ref={surface} class="min-h-0 flex-1 bg-v2-background-bg-base flex items-center justify-center">
+        <Show when={(empty() || failed()) && !props.browser.suspended()}>
+          {/* Add the 40px toolbar to the file empty state's 160px bottom padding to align their centers. */}
+          <div
+            dir="auto"
+            class="flex size-full flex-col items-center justify-center gap-2 p-6 pb-[200px] text-center text-text-weak"
+          >
+            <Icon name="globe" size="large" class="mb-2 shrink-0" />
+            <div class="text-[13px] font-medium leading-[var(--line-height-compact)] text-text-strong">
+              {language.t(failed() ? "session.browser.failed.title" : "session.browser.empty.title")}
+            </div>
+            <div class="text-13-regular leading-[var(--line-height-base)]">
+              {language.t(failed() ? "session.browser.failed.description" : "session.browser.empty.description")}
+            </div>
+          </div>
+        </Show>
        <Show when={props.browser.suspended()}>
          <p class="px-6 text-center text-13-regular text-v2-text-text-subtle" role="status">
            {language.t("session.browser.suspended")}
@@ -1,6 +1,12 @@
-import { DateTime } from "luxon"
-
 export function createSessionContextFormatter(locale: string) {
+  // The fields luxon's DATETIME_MED preset passed to Intl; output is identical.
+  const dateTime = new Intl.DateTimeFormat(locale, {
+    year: "numeric",
+    month: "short",
+    day: "numeric",
+    hour: "numeric",
+    minute: "numeric",
+  })
  return {
    number(value: number | null | undefined) {
      if (value === undefined) return "—"
@@ -14,7 +20,7 @@ export function createSessionContextFormatter(locale: string) {
    },
    time(value: number | undefined) {
      if (!value) return "—"
-      return DateTime.fromMillis(value).setLocale(locale).toLocaleString(DateTime.DATETIME_MED)
+      return dateTime.format(value)
    },
  }
 }
@@ -1,6 +1,8 @@
 import { children, createMemo, Show } from "solid-js"
 import type { JSX } from "solid-js"
 import { useSortable } from "@dnd-kit/solid/sortable"
+import { Icon } from "@opencode/ui/icon"
+import { IconButton } from "@opencode/ui/icon-button"
 import { Keybind } from "@opencode/ui/keybind"
 import { Tooltip } from "@opencode/ui/tooltip"
 import { Tabs } from "@opencode/ui/tabs"
@@ -69,9 +71,19 @@ export function SortableTab(props: {
              placement="bottom"
              gutter={10}
            >
-              <Tabs.CloseButton
-                class="h-5 w-5"
-                onClick={() => props.onTabClose(props.tab)}
+              <IconButton
+                size="small"
+                variant="ghost-muted"
+                onPointerDown={(event) => {
+                  event.preventDefault()
+                  event.stopPropagation()
+                }}
+                onClick={(event) => {
+                  event.preventDefault()
+                  event.stopPropagation()
+                  props.onTabClose(props.tab)
+                }}
+                icon={<Icon name="xmark-small" />}
                aria-label={language.t("common.closeTab")}
              />
            </Tooltip>
@@ -1,7 +1,8 @@
-import { For, Show, createEffect, createMemo, lazy, on, onCleanup } from "solid-js"
+import { For, Show, createEffect, createMemo, on, onCleanup } from "solid-js"
 import { createStore } from "solid-js/store"
 import { makeEventListener } from "@solid-primitives/event-listener"
 import { Button } from "@opencode/ui/button"
+import { Icon } from "@opencode/ui/icon"
 import { IconButton } from "@opencode/ui/icon-button"
 import { TextInput } from "@opencode/ui/text-input"
 import { showToast } from "@/shell/notifications/toast"
@@ -17,8 +18,6 @@ import { useLanguage } from "@/runtime/i18n/language"
 import { useSettings } from "@/settings/model"
 import { SettingsList } from "@/settings/list"

-const Icon = lazy(() => import("@opencode/ui/icon").then((module) => ({ default: module.Icon })))
-
 const IS_MAC = typeof navigator === "object" && /(Mac|iPod|iPhone|iPad)/.test(navigator.platform)
 const PALETTE_ID = "command.palette"

@@ -188,9 +188,9 @@ function legacyTimelineActivity(value: boolean | "hidden" | "compact" | "full" |

 export const settingsPersistence = Persistence.migrate(
  settingsSchema,
-  Schema.Struct({
+  Persistence.legacy({
    general: Persistence.optional(
-      Schema.Struct({
+      Persistence.legacy({
        // Keep invalid explicit values distinct from absent values so legacy preferences cannot replace them.
        timelineDetail: Schema.optional(
          Schema.NullOr(
@@ -173,16 +173,16 @@ export const layoutSchema = Persistence.struct({

 export const layoutPersistence = Persistence.migrate(
  layoutSchema,
-  Schema.Struct({
+  Persistence.legacy({
    sidebar: Persistence.optional(
-      Schema.Struct({
+      Persistence.legacy({
        workspaces: Persistence.optional(Schema.Union([Schema.Boolean, Schema.Record(Schema.String, Schema.Boolean)])),
        workspacesDefault: Persistence.optional(Schema.Boolean),
      }),
    ),
-    review: Persistence.optional(Schema.Struct({ panelOpened: Persistence.optional(Schema.Boolean) })),
+    review: Persistence.optional(Persistence.legacy({ panelOpened: Persistence.optional(Schema.Boolean) })),
    fileTree: Persistence.optional(
-      Schema.Struct({
+      Persistence.legacy({
        opened: Persistence.optional(Schema.Boolean),
        width: Persistence.optional(Schema.Finite),
        tab: Persistence.optional(Schema.Literals(["changes", "all"])),
@@ -1,5 +1,5 @@
 import { describe, expect, test } from "bun:test"
-import { canOpenTabRename, canStartTabDrag, forwardTabRef, isTabCloseTarget } from "./tab-gesture"
+import { canOpenTabRename, forwardTabRef, isTabCloseTarget } from "./tab-gesture"

 describe("titlebar tab gestures", () => {
  test("excludes close controls from tab gestures", () => {
@@ -24,10 +24,4 @@ describe("titlebar tab gestures", () => {
    expect(canOpenTabRename(false, false, false)).toBe(true)
    expect(canOpenTabRename(false, false, true)).toBe(false)
  })
-
-  test("preserves native panning for touch pointers", () => {
-    expect(canStartTabDrag("mouse")).toBe(true)
-    expect(canStartTabDrag("pen")).toBe(true)
-    expect(canStartTabDrag("touch")).toBe(false)
-  })
 })
@@ -4,10 +4,6 @@ export function isTabCloseTarget(target: EventTarget | null) {
  return target instanceof Element && !!target.closest('[data-slot="tab-close"]')
 }

-export function canStartTabDrag(pointerType: string) {
-  return pointerType !== "touch"
-}
-
 export function forwardTabRef(ref: Ref<HTMLDivElement> | undefined, element: HTMLDivElement) {
  if (typeof ref === "function") ref(element)
 }
@@ -9,7 +9,8 @@
  justify-content: center;
 }

-[data-titlebar-tab] {
+[data-titlebar-tab],
+[data-titlebar-tab-action] {
  --tab-base: var(--v2-background-bg-deep);
  --tab-overlay: transparent;
  background: linear-gradient(var(--tab-overlay), var(--tab-overlay)), var(--tab-base);
@@ -68,6 +69,14 @@
  --tab-overlay: var(--v2-overlay-simple-overlay-pressed);
 }

+[data-titlebar-tab-action]:is(:hover, :focus-visible) {
+  --tab-overlay: var(--v2-overlay-simple-overlay-hover);
+}
+
+[data-titlebar-tab-action]:is(:active, [data-state="pressed"]) {
+  --tab-overlay: var(--v2-overlay-simple-overlay-pressed);
+}
+
 [data-titlebar-tab]:is(:hover, [data-state="pressed"]) [data-slot="tab-close"] {
  background: linear-gradient(var(--tab-overlay), var(--tab-overlay)), var(--tab-base);
 }
@@ -328,6 +328,7 @@ export function TabNavItem(props: {

  return (
    <Menu.Context
+      modal={false}
      onOpenChange={(open) => {
        setMenu("open", open)
        if (open) setPopoverOpen(false)
@@ -16,7 +16,7 @@ import { useTabs } from "@/shell/tabs/tabs"
 import { createTabComposerState } from "@/composer/persistence"
 import { base64Encode } from "@opencode/util/encode"
 import { showToast } from "@/shell/notifications/toast"
-import { canStartTabDrag, isTabCloseTarget } from "./tab-gesture"
+import { isTabCloseTarget } from "./tab-gesture"
 import { adjacentTabKey, mergeVisibleTabOrder } from "./tab-order"
 import type { SessionInfo } from "@opencode/client/promise"

@@ -292,9 +292,11 @@ export function TitlebarTabStrip(props: {
        <DragDropProvider
          sensors={[
            PointerSensor.configure({
-              activationConstraints: [new PointerActivationConstraints.Distance({ value: 4 })],
+              activationConstraints: (event) =>
+                event.pointerType === "touch"
+                  ? [new PointerActivationConstraints.Distance({ value: 8 })]
+                  : [new PointerActivationConstraints.Distance({ value: 4 })],
              preventActivation: (event) =>
-                !canStartTabDrag(event.pointerType) ||
                isTabCloseTarget(event.target) ||
                (event.target instanceof Element && !!event.target.closest('[contenteditable="true"]')),
            }),
@@ -313,6 +315,7 @@ export function TitlebarTabStrip(props: {
            if (!source) return
            const tab = props.tabs.find((item) => tabKey(item) === source.id.toString())
            if (!tab) return
+            if (vertical()) return
            const tabEl = source.element?.querySelector<HTMLDivElement>("[data-titlebar-tab]")
            props.onNavigate(tab, tabEl ?? undefined)
          }}
@@ -351,9 +351,10 @@ export function Titlebar(props: {
              >
                <button
                  type="button"
+                  data-titlebar-tab-action
                  data-action="vertical-tabs-home"
                  data-state={layout.route().type === "home" ? "pressed" : undefined}
-                  class="group mb-1 flex h-7 w-full shrink-0 items-center gap-1.5 rounded-[6px] ps-1.5 pe-2 text-[13px] leading-4 text-v2-text-text-faint hover:bg-v2-background-bg-layer-02 hover:text-v2-text-text-base data-[state=pressed]:bg-v2-background-bg-layer-02 data-[state=pressed]:text-v2-text-text-base"
+                  class="group mb-1 flex h-7 w-full shrink-0 items-center gap-1.5 rounded-[6px] ps-1.5 pe-2 text-[13px] leading-4 text-v2-text-text-faint hover:text-v2-text-text-base data-[state=pressed]:text-v2-text-text-base"
                  onClick={toggleHome}
                  aria-label={language.t("home.title")}
                  aria-pressed={layout.route().type === "home"}
@@ -650,8 +651,9 @@ export function Titlebar(props: {
                            {homeButton(true)}
                            <button
                              type="button"
+                              data-titlebar-tab-action
                              data-action="vertical-tabs-new-session"
-                              class="group flex h-7 w-full shrink-0 items-center gap-1.5 rounded-[6px] ps-1.5 pe-2 text-[13px] leading-4 text-v2-text-text-faint hover:bg-v2-background-bg-layer-02 hover:text-v2-text-text-base"
+                              class="group flex h-7 w-full shrink-0 items-center gap-1.5 rounded-[6px] ps-1.5 pe-2 text-[13px] leading-4 text-v2-text-text-faint hover:text-v2-text-text-base"
                              onClick={openNewTab}
                              aria-label={language.t("command.session.new")}
                            >
@@ -36,17 +36,17 @@ export function ErrorOverlay(props: { component: string; error: unknown; onClose
      <Dialog centered onClose={props.onClose}>
        <box maxHeight={Math.max(1, dimensions().height - 3)} paddingX={2} paddingBottom={1} gap={1}>
          <box flexDirection="row" justifyContent="space-between" flexShrink={0}>
-            <text fg={theme.text.feedback.error.default} attributes={TextAttributes.BOLD}>
+            <text fg={theme.text.feedback.error.base} attributes={TextAttributes.BOLD}>
              Error while hot reloading
            </text>
-            <text fg={theme.text.subdued} onMouseUp={props.onClose}>
+            <text fg={theme.text.muted} onMouseUp={props.onClose}>
              esc
            </text>
          </box>
-          <text maxHeight={Math.max(1, dimensions().height - 9)} fg={theme.text.default}>
+          <text maxHeight={Math.max(1, dimensions().height - 9)} fg={theme.text.base}>
            {props.error instanceof Error ? props.error.message : String(props.error)}
          </text>
-          <text flexShrink={0} fg={theme.text.subdued}>
+          <text flexShrink={0} fg={theme.text.muted}>
            {props.component} · Fix the component and save to retry.
          </text>
        </box>
@@ -1,7 +1,7 @@
 {
  "$schema": "https://json.schemastore.org/package.json",
  "name": "@opencode/cli",
-  "version": "2.0.8",
+  "version": "2.0.11",
  "type": "module",
  "license": "MIT",
  "bin": {
@@ -0,0 +1,120 @@
+#!/usr/bin/env bun
+import { Script } from "@opencode/script"
+import { $ } from "bun"
+import { mkdir, rm } from "node:fs/promises"
+import path from "node:path"
+import { fileURLToPath } from "node:url"
+import { UpdateArtifact } from "../../../script/update-artifact"
+
+if (Script.channel !== "beta" && Script.channel !== "latest") {
+  throw new Error("Homebrew publishing requires the beta or latest channel")
+}
+const valid =
+  Script.channel === "beta"
+    ? /^\d+\.\d+\.\d+-beta[.-]\d+(?:\.\d+)?$/.test(Script.version)
+    : /^\d+\.\d+\.\d+$/.test(Script.version)
+if (!valid) throw new Error(`Expected a ${Script.channel} release version`)
+
+const dir = fileURLToPath(new URL("..", import.meta.url))
+const root = path.resolve(process.env.OPENCODE_CLI_DIST ?? path.join(dir, "dist"))
+const outdir = path.join(root, "homebrew-tap")
+const dryRun = process.argv.includes("--dry-run")
+const name = Script.channel === "beta" ? "opencode-beta" : "opencode-v2"
+const formulaClass = Script.channel === "beta" ? "OpencodeBeta" : "OpencodeV2"
+
+const targets = await Promise.all(
+  [
+    { name: "darwin-arm64", archive: "zip" },
+    { name: "darwin-x64-baseline", archive: "zip" },
+    { name: "linux-arm64", archive: "tar.gz" },
+    { name: "linux-x64-baseline", archive: "tar.gz" },
+  ].map(async (target) => {
+    const filename = `opencode-${target.name}.${target.archive}`
+    const file = Bun.file(path.join(root, filename))
+    if (!(await file.exists()) || !file.size) throw new Error(`Missing Homebrew archive: ${filename}`)
+    const sha256 = new Bun.CryptoHasher("sha256")
+    for await (const chunk of file.stream()) sha256.update(chunk)
+    return {
+      ...target,
+      url: `https://opencode.ai/files/bin/${encodeURIComponent(Script.version)}/${filename}`,
+      sha256: sha256.digest("hex"),
+    }
+  }),
+)
+
+await rm(outdir, { recursive: true, force: true })
+if (dryRun) await mkdir(outdir, { recursive: true })
+if (!dryRun) {
+  const token = process.env.GITHUB_TOKEN
+  if (!token) throw new Error("GITHUB_TOKEN is required to update the Homebrew tap")
+  await $`git clone ${`https://x-access-token:${token}@github.com/anomalyco/homebrew-tap.git`} ${outdir}`
+  await $`git checkout -B master`.cwd(outdir)
+}
+
+const target = (name: string) => {
+  const result = targets.find((item) => item.name === name)
+  if (!result) throw new Error(`Missing Homebrew target: ${name}`)
+  return result
+}
+const macArm = target("darwin-arm64")
+const macIntel = target("darwin-x64-baseline")
+const linuxArm = target("linux-arm64")
+const linuxIntel = target("linux-x64-baseline")
+
+await Bun.write(
+  path.join(outdir, `${name}.rb`),
+  [
+    "# typed: false",
+    "# frozen_string_literal: true",
+    "",
+    `class ${formulaClass} < Formula`,
+    `  desc "OpenCode V2${Script.channel === "beta" ? " beta" : ""} - the AI coding agent for the terminal"`,
+    '  homepage "https://github.com/anomalyco/opencode"',
+    `  version "${Script.version}"`,
+    '  license "MIT"',
+    "",
+    '  depends_on "ripgrep"',
+    '  conflicts_with "opencode", because: "both install an opencode binary"',
+    "",
+    "  on_macos do",
+    "    if Hardware::CPU.arm?",
+    `      url "${macArm.url}"`,
+    `      sha256 "${macArm.sha256}"`,
+    "    else",
+    `      url "${macIntel.url}"`,
+    `      sha256 "${macIntel.sha256}"`,
+    "    end",
+    "  end",
+    "",
+    "  on_linux do",
+    "    if Hardware::CPU.arm?",
+    `      url "${linuxArm.url}"`,
+    `      sha256 "${linuxArm.sha256}"`,
+    "    else",
+    `      url "${linuxIntel.url}"`,
+    `      sha256 "${linuxIntel.sha256}"`,
+    "    end",
+    "  end",
+    "",
+    "  def install",
+    '    bin.install "opencode"',
+    "  end",
+    "end",
+    "",
+  ].join("\n"),
+)
+console.log(`Prepared ${name} ${Script.version} in ${outdir}`)
+if (dryRun) process.exit(0)
+
+await $`git add ${name + ".rb"}`.cwd(outdir)
+if ((await $`git diff --cached --quiet`.cwd(outdir).nothrow()).exitCode !== 0) {
+  await $`git commit -m ${`chore: update ${name} to ${Script.version}`}`.cwd(outdir)
+  await $`git push origin master`.cwd(outdir)
+}
+await UpdateArtifact.publish({
+  channel: Script.channel,
+  name: "cli",
+  distribution: "homebrew",
+  version: Script.version,
+  metadata: { package: `anomalyco/tap/${name}` },
+})
@@ -149,6 +149,10 @@ if (Script.channel === "latest" && Script.release && !dryRun) {

 if ((Script.channel === "beta" || Script.channel === "latest") && Script.release) {
  await $`bun ./script/publish-aur.ts ${dryRun ? ["--dry-run"] : []}`.env({ ...process.env, OPENCODE_CLI_DIST: root })
+  await $`bun ./script/publish-homebrew.ts ${dryRun ? ["--dry-run"] : []}`.env({
+    ...process.env,
+    OPENCODE_CLI_DIST: root,
+  })
 }

 async function archive(bin: string, target: string, binary: string, directory: string) {
@@ -3,8 +3,8 @@ import { Schema } from "effect"
 import { Spec } from "../framework/spec"
 import { Updater } from "../services/updater"

-export const PrintLogs = GlobalFlag.setting("print-logs")({
-  flag: Flag.boolean("print-logs").pipe(
+export const PrintLogs = GlobalFlag.Setting("print-logs")({
+  flag: Flag.Boolean("print-logs").pipe(
    Flag.withDescription("Print logs to stderr (server logs require --standalone)"),
    Flag.withDefault(false),
  ),
@@ -13,23 +13,23 @@ export const PrintLogs = GlobalFlag.setting("print-logs")({
 declare const OPENCODE_CLI_NAME: string | undefined

 const ServerParams = {
-  standalone: Flag.boolean("standalone").pipe(
+  standalone: Flag.Boolean("standalone").pipe(
    Flag.withDescription("Run with a private server instead of the background service"),
    Flag.withDefault(false),
  ),
-  server: Flag.string("server").pipe(
+  server: Flag.String("server").pipe(
    Flag.withDescription("Connect to a server URL instead of the background service"),
    Flag.optional,
  ),
 }

 const PermissionParams = {
-  auto: Flag.boolean("auto").pipe(
+  auto: Flag.Boolean("auto").pipe(
    Flag.withDescription("Auto-approve permissions that are not explicitly denied"),
    Flag.withDefault(false),
  ),
-  yolo: Flag.boolean("yolo").pipe(Flag.withDefault(false), Flag.withHidden),
-  dangerouslySkipPermissions: Flag.boolean("dangerously-skip-permissions").pipe(
+  yolo: Flag.Boolean("yolo").pipe(Flag.withDefault(false), Flag.withHidden),
+  dangerouslySkipPermissions: Flag.Boolean("dangerously-skip-permissions").pipe(
    Flag.withDefault(false),
    Flag.withHidden,
  ),
@@ -40,32 +40,32 @@ const Root = Spec.make(typeof OPENCODE_CLI_NAME === "string" ? OPENCODE_CLI_NAME
  params: {
    ...ServerParams,
    ...PermissionParams,
-    directory: Argument.string("directory").pipe(
+    directory: Argument.String("directory").pipe(
      Argument.withDescription("Directory to start OpenCode in"),
      Argument.optional,
    ),
-    continue: Flag.boolean("continue").pipe(
+    continue: Flag.Boolean("continue").pipe(
      Flag.withAlias("c"),
      Flag.withDescription("Continue the last session"),
      Flag.withDefault(false),
    ),
-    session: Flag.string("session").pipe(
+    session: Flag.String("session").pipe(
      Flag.withAlias("s"),
      Flag.withDescription("Session ID to continue"),
      Flag.optional,
    ),
-    prompt: Flag.string("prompt").pipe(Flag.withDescription("Prompt to use"), Flag.optional),
+    prompt: Flag.String("prompt").pipe(Flag.withDescription("Prompt to use"), Flag.optional),
  },
  commands: [
    Spec.make("upgrade", {
      description: "Upgrade OpenCode to the latest or a specific version",
      aliases: ["update"],
      params: {
-        target: Argument.string("target").pipe(
+        target: Argument.String("target").pipe(
          Argument.withDescription("Version to upgrade to (with or without a leading v)"),
          Argument.optional,
        ),
-        method: Flag.choice("method", Updater.methods).pipe(
+        method: Flag.Literals("method", Updater.methods).pipe(
          Flag.withAlias("m"),
          Flag.withDescription("Installation method to use"),
          Flag.optional,
@@ -75,21 +75,21 @@ const Root = Spec.make(typeof OPENCODE_CLI_NAME === "string" ? OPENCODE_CLI_NAME
    Spec.make("uninstall", {
      description: "Uninstall OpenCode and remove all related files",
      params: {
-        keepConfig: Flag.boolean("keep-config").pipe(
+        keepConfig: Flag.Boolean("keep-config").pipe(
          Flag.withAlias("c"),
          Flag.withDescription("Keep configuration files"),
          Flag.withDefault(false),
        ),
-        keepData: Flag.boolean("keep-data").pipe(
+        keepData: Flag.Boolean("keep-data").pipe(
          Flag.withAlias("d"),
          Flag.withDescription("Keep session data and snapshots"),
          Flag.withDefault(false),
        ),
-        dryRun: Flag.boolean("dry-run").pipe(
+        dryRun: Flag.Boolean("dry-run").pipe(
          Flag.withDescription("Show what would be removed without removing"),
          Flag.withDefault(false),
        ),
-        force: Flag.boolean("force").pipe(
+        force: Flag.Boolean("force").pipe(
          Flag.withAlias("f"),
          Flag.withDescription("Skip confirmation prompts"),
          Flag.withDefault(false),
@@ -101,17 +101,17 @@ const Root = Spec.make(typeof OPENCODE_CLI_NAME === "string" ? OPENCODE_CLI_NAME
      description: "Make a request to the running server",
      params: {
        ...ServerParams,
-        request: Argument.string("operation | method path").pipe(
+        request: Argument.String("operation | method path").pipe(
          Argument.withDescription("OpenAPI operation ID, or an HTTP method followed by a path"),
          Argument.variadic({ min: 1, max: 2 }),
        ),
-        data: Flag.string("data").pipe(Flag.withAlias("d"), Flag.withDescription("Request body"), Flag.optional),
-        header: Flag.string("header").pipe(
+        data: Flag.String("data").pipe(Flag.withAlias("d"), Flag.withDescription("Request body"), Flag.optional),
+        header: Flag.String("header").pipe(
          Flag.withAlias("H"),
          Flag.withDescription("Request header in name:value form"),
          Flag.atMost(100),
        ),
-        param: Flag.keyValuePair("param").pipe(Flag.withDescription("OpenAPI path or query parameter"), Flag.optional),
+        param: Flag.KeyValuePair("param").pipe(Flag.withDescription("OpenAPI path or query parameter"), Flag.optional),
      },
    }),
    Spec.make("debug", {
@@ -122,7 +122,7 @@ const Root = Spec.make(typeof OPENCODE_CLI_NAME === "string" ? OPENCODE_CLI_NAME
        Spec.make("paths", {
          description: "Show global paths (data, config, cache, state)",
          params: {
-            name: Argument.choice("name", [
+            name: Argument.Literals("name", [
              "db",
              "home",
              "data",
@@ -134,7 +134,9 @@ const Root = Spec.make(typeof OPENCODE_CLI_NAME === "string" ? OPENCODE_CLI_NAME
              "log",
              "repos",
            ]).pipe(
-              Argument.withDescription("Print only one path: db, home, data, config, cache, state, tmp, bin, log, repos"),
+              Argument.withDescription(
+                "Print only one path: db, home, data, config, cache, state, tmp, bin, log, repos",
+              ),
              Argument.optional,
            ),
          },
@@ -148,7 +150,7 @@ const Root = Spec.make(typeof OPENCODE_CLI_NAME === "string" ? OPENCODE_CLI_NAME
          description: "list providers and credentials",
          params: {
            ...ServerParams,
-            format: Flag.choice("format", ["default", "json"]).pipe(
+            format: Flag.Literals("format", ["default", "json"]).pipe(
              Flag.withDescription("Output format"),
              Flag.withDefault("default"),
            ),
@@ -158,12 +160,12 @@ const Root = Spec.make(typeof OPENCODE_CLI_NAME === "string" ? OPENCODE_CLI_NAME
          description: "log in to a provider",
          params: {
            ...ServerParams,
-            target: Argument.string("target").pipe(
+            target: Argument.String("target").pipe(
              Argument.withDescription("Integration ID, name, or well-known provider URL"),
              Argument.optional,
            ),
-            method: Flag.string("method").pipe(Flag.withDescription("Authentication method ID"), Flag.optional),
-            answer: Flag.string("answer").pipe(
+            method: Flag.String("method").pipe(Flag.withDescription("Authentication method ID"), Flag.optional),
+            answer: Flag.String("answer").pipe(
              Flag.withDescription("Provider form answer (key=value; repeat for multiple fields)"),
              Flag.atMost(100),
            ),
@@ -173,11 +175,11 @@ const Root = Spec.make(typeof OPENCODE_CLI_NAME === "string" ? OPENCODE_CLI_NAME
          description: "log out of a saved account",
          params: {
            ...ServerParams,
-            target: Argument.string("target").pipe(
+            target: Argument.String("target").pipe(
              Argument.withDescription("Integration ID or name"),
              Argument.optional,
            ),
-            credential: Argument.string("credential").pipe(
+            credential: Argument.String("credential").pipe(
              Argument.withDescription("Credential ID or label (opens an account picker when omitted)"),
              Argument.optional,
            ),
@@ -187,11 +189,11 @@ const Root = Spec.make(typeof OPENCODE_CLI_NAME === "string" ? OPENCODE_CLI_NAME
          description: "switch the active account for an integration",
          params: {
            ...ServerParams,
-            target: Argument.string("target").pipe(
+            target: Argument.String("target").pipe(
              Argument.withDescription("Integration ID or name"),
              Argument.optional,
            ),
-            credential: Argument.string("credential").pipe(
+            credential: Argument.String("credential").pipe(
              Argument.withDescription("Credential ID or label (opens an account picker when omitted)"),
              Argument.optional,
            ),
@@ -206,21 +208,21 @@ const Root = Spec.make(typeof OPENCODE_CLI_NAME === "string" ? OPENCODE_CLI_NAME
        Spec.make("add", {
          description: "Add an MCP server to your configuration",
          params: {
-            name: Argument.string("name").pipe(Argument.withDescription("Name of the MCP server")),
-            command: Argument.string("command").pipe(
+            name: Argument.String("name").pipe(Argument.withDescription("Name of the MCP server")),
+            command: Argument.String("command").pipe(
              Argument.withDescription("Command and arguments for a local server, passed after --"),
              Argument.variadic({ min: 0 }),
            ),
-            url: Flag.string("url").pipe(Flag.withDescription("URL for a remote MCP server"), Flag.optional),
-            header: Flag.keyValuePair("header").pipe(
+            url: Flag.String("url").pipe(Flag.withDescription("URL for a remote MCP server"), Flag.optional),
+            header: Flag.KeyValuePair("header").pipe(
              Flag.withDescription("HTTP header for a remote server, as name=value"),
              Flag.optional,
            ),
-            env: Flag.keyValuePair("env").pipe(
+            env: Flag.KeyValuePair("env").pipe(
              Flag.withDescription("Environment variable for a local server, as name=value"),
              Flag.optional,
            ),
-            global: Flag.boolean("global").pipe(
+            global: Flag.Boolean("global").pipe(
              Flag.withDescription("Write to the global config instead of the project config"),
              Flag.withDefault(false),
            ),
@@ -228,11 +230,11 @@ const Root = Spec.make(typeof OPENCODE_CLI_NAME === "string" ? OPENCODE_CLI_NAME
        }),
        Spec.make("auth", {
          description: "Authenticate with an OAuth-capable remote MCP server",
-          params: { name: Argument.string("name").pipe(Argument.withDescription("Name of the MCP server")) },
+          params: { name: Argument.String("name").pipe(Argument.withDescription("Name of the MCP server")) },
        }),
        Spec.make("logout", {
          description: "Remove stored OAuth credentials for an MCP server",
-          params: { name: Argument.string("name").pipe(Argument.withDescription("Name of the MCP server")) },
+          params: { name: Argument.String("name").pipe(Argument.withDescription("Name of the MCP server")) },
        }),
      ],
    }),
@@ -242,7 +244,7 @@ const Root = Spec.make(typeof OPENCODE_CLI_NAME === "string" ? OPENCODE_CLI_NAME
        Spec.make("list", {
          description: "List plugins",
          params: {
-            builtin: Flag.boolean("builtin").pipe(
+            builtin: Flag.Boolean("builtin").pipe(
              Flag.withDescription("Include built-in server plugins"),
              Flag.withDefault(false),
            ),
@@ -251,13 +253,13 @@ const Root = Spec.make(typeof OPENCODE_CLI_NAME === "string" ? OPENCODE_CLI_NAME
        Spec.make("add", {
          description: "Install a plugin and add it to the global configuration",
          params: {
-            package: Argument.string("package").pipe(Argument.withDescription("npm registry or Git package specifier")),
+            package: Argument.String("package").pipe(Argument.withDescription("npm registry or Git package specifier")),
          },
        }),
        Spec.make("check", {
          description: "Check package plugins for updates",
          params: {
-            target: Argument.string("target").pipe(
+            target: Argument.String("target").pipe(
              Argument.withDescription("Configured package target"),
              Argument.optional,
            ),
@@ -266,7 +268,7 @@ const Root = Spec.make(typeof OPENCODE_CLI_NAME === "string" ? OPENCODE_CLI_NAME
        Spec.make("update", {
          description: "Update package plugins",
          params: {
-            target: Argument.string("target").pipe(
+            target: Argument.String("target").pipe(
              Argument.withDescription("Configured package target; omit to update all outdated plugins"),
              Argument.optional,
            ),
@@ -275,7 +277,7 @@ const Root = Spec.make(typeof OPENCODE_CLI_NAME === "string" ? OPENCODE_CLI_NAME
        Spec.make("remove", {
          description: "Remove a plugin from global configuration",
          params: {
-            package: Argument.string("package").pipe(Argument.withDescription("configured package specifier")),
+            package: Argument.String("package").pipe(Argument.withDescription("configured package specifier")),
          },
        }),
      ],
@@ -288,108 +290,108 @@ const Root = Spec.make(typeof OPENCODE_CLI_NAME === "string" ? OPENCODE_CLI_NAME
      description: "Show shareable usage statistics",
      params: {
        ...ServerParams,
-        days: Flag.integer("days").pipe(
+        days: Flag.Int("days").pipe(
          Flag.withSchema(Schema.Int.check(Schema.isGreaterThanOrEqualTo(0))),
          Flag.withDescription("Show the last N days; 0 means today"),
          Flag.optional,
        ),
-        year: Flag.integer("year").pipe(
+        year: Flag.Int("year").pipe(
          Flag.withSchema(Schema.Int.check(Schema.isBetween({ minimum: 1970, maximum: 9_999 }))),
          Flag.withDescription("Show a calendar year"),
          Flag.optional,
        ),
-        all: Flag.boolean("all").pipe(Flag.withDescription("Show lifetime statistics"), Flag.withDefault(false)),
-        project: Flag.string("project").pipe(
+        all: Flag.Boolean("all").pipe(Flag.withDescription("Show lifetime statistics"), Flag.withDefault(false)),
+        project: Flag.String("project").pipe(
          Flag.withDescription('Filter by project ID, or use "." for the current project'),
          Flag.optional,
        ),
-        models: Flag.boolean("models").pipe(Flag.withDescription("Show model usage"), Flag.withDefault(false)),
-        tools: Flag.boolean("tools").pipe(Flag.withDescription("Show tool reliability"), Flag.withDefault(false)),
-        cost: Flag.boolean("cost").pipe(Flag.withDescription("Show cost and token details"), Flag.withDefault(false)),
-        full: Flag.boolean("full").pipe(Flag.withDescription("Show every detailed section"), Flag.withDefault(false)),
-        limit: Flag.integer("limit").pipe(
+        models: Flag.Boolean("models").pipe(Flag.withDescription("Show model usage"), Flag.withDefault(false)),
+        tools: Flag.Boolean("tools").pipe(Flag.withDescription("Show tool reliability"), Flag.withDefault(false)),
+        cost: Flag.Boolean("cost").pipe(Flag.withDescription("Show cost and token details"), Flag.withDefault(false)),
+        full: Flag.Boolean("full").pipe(Flag.withDescription("Show every detailed section"), Flag.withDefault(false)),
+        limit: Flag.Int("limit").pipe(
          Flag.withSchema(Schema.Int.check(Schema.isGreaterThanOrEqualTo(1))),
          Flag.withDescription("Number of rows in detailed sections"),
          Flag.withDefault(5),
        ),
-        json: Flag.boolean("json").pipe(Flag.withDescription("Output statistics as JSON"), Flag.withDefault(false)),
+        json: Flag.Boolean("json").pipe(Flag.withDescription("Output statistics as JSON"), Flag.withDefault(false)),
      },
    }),
    Spec.make("mini", {
      description: "Start the minimal interactive interface",
      params: {
        ...ServerParams,
-        continue: Flag.boolean("continue").pipe(
+        continue: Flag.Boolean("continue").pipe(
          Flag.withAlias("c"),
          Flag.withDescription("Continue the last session"),
          Flag.withDefault(false),
        ),
-        session: Flag.string("session").pipe(
+        session: Flag.String("session").pipe(
          Flag.withAlias("s"),
          Flag.withDescription("Session ID to continue"),
          Flag.optional,
        ),
-        fork: Flag.boolean("fork").pipe(
+        fork: Flag.Boolean("fork").pipe(
          Flag.withDescription("Fork the session when continuing"),
          Flag.withDefault(false),
        ),
-        replay: Flag.boolean("replay").pipe(
+        replay: Flag.Boolean("replay").pipe(
          Flag.withDescription("Restore session history on resume and resize (disable with --no-replay)"),
          Flag.optional,
        ),
-        replayLimit: Flag.integer("replay-limit").pipe(
+        replayLimit: Flag.Int("replay-limit").pipe(
          Flag.withDescription("Limit replay to the newest N messages (default: 200)"),
          Flag.optional,
        ),
-        model: Flag.string("model").pipe(
+        model: Flag.String("model").pipe(
          Flag.withAlias("m"),
          Flag.withDescription("Model to use in the format provider/model"),
          Flag.optional,
        ),
-        agent: Flag.string("agent").pipe(Flag.withDescription("Agent to use"), Flag.optional),
-        prompt: Flag.string("prompt").pipe(Flag.withDescription("Prompt to use"), Flag.optional),
-        demo: Flag.boolean("demo").pipe(Flag.withDefault(false), Flag.withHidden),
+        agent: Flag.String("agent").pipe(Flag.withDescription("Agent to use"), Flag.optional),
+        prompt: Flag.String("prompt").pipe(Flag.withDescription("Prompt to use"), Flag.optional),
+        demo: Flag.Boolean("demo").pipe(Flag.withDefault(false), Flag.withHidden),
      },
    }),
    Spec.make("run", {
      description: "Run OpenCode with a message",
      params: {
        ...ServerParams,
-        message: Argument.string("message").pipe(
+        message: Argument.String("message").pipe(
          Argument.withDescription("Message to send"),
          Argument.variadic({ min: 0 }),
        ),
-        continue: Flag.boolean("continue").pipe(
+        continue: Flag.Boolean("continue").pipe(
          Flag.withAlias("c"),
          Flag.withDescription("Continue the last session"),
          Flag.withDefault(false),
        ),
-        session: Flag.string("session").pipe(
+        session: Flag.String("session").pipe(
          Flag.withAlias("s"),
          Flag.withDescription("Session ID to continue"),
          Flag.optional,
        ),
-        fork: Flag.boolean("fork").pipe(
+        fork: Flag.Boolean("fork").pipe(
          Flag.withDescription("Fork the session before continuing"),
          Flag.withDefault(false),
        ),
-        model: Flag.string("model").pipe(
+        model: Flag.String("model").pipe(
          Flag.withAlias("m"),
          Flag.withDescription("Model to use in the format provider/model#variant"),
          Flag.optional,
        ),
-        agent: Flag.string("agent").pipe(Flag.withDescription("Agent to use"), Flag.optional),
-        format: Flag.choice("format", ["default", "json"]).pipe(
+        agent: Flag.String("agent").pipe(Flag.withDescription("Agent to use"), Flag.optional),
+        format: Flag.Literals("format", ["default", "json"]).pipe(
          Flag.withDescription("Output format"),
          Flag.withDefault("default"),
        ),
-        file: Flag.string("file").pipe(
+        file: Flag.String("file").pipe(
          Flag.withAlias("f"),
          Flag.withDescription("File to attach to the message"),
          Flag.atMost(100),
        ),
-        title: Flag.string("title").pipe(Flag.withDescription("Session title"), Flag.optional),
-        thinking: Flag.boolean("thinking").pipe(Flag.withDescription("Show thinking blocks"), Flag.withDefault(false)),
+        title: Flag.String("title").pipe(Flag.withDescription("Session title"), Flag.optional),
+        thinking: Flag.Boolean("thinking").pipe(Flag.withDescription("Show thinking blocks"), Flag.withDefault(false)),
        ...PermissionParams,
      },
    }),
@@ -400,13 +402,13 @@ const Root = Spec.make(typeof OPENCODE_CLI_NAME === "string" ? OPENCODE_CLI_NAME
          description: "List top-level sessions in the current project, newest first",
          params: {
            ...ServerParams,
-            maxCount: Flag.integer("max-count").pipe(
+            maxCount: Flag.Int("max-count").pipe(
              Flag.withAlias("n"),
              Flag.withSchema(Schema.Int.check(Schema.isGreaterThanOrEqualTo(1))),
              Flag.withDescription("Limit to N most recent sessions (default: 100)"),
              Flag.optional,
            ),
-            format: Flag.choice("format", ["table", "json"]).pipe(
+            format: Flag.Literals("format", ["table", "json"]).pipe(
              Flag.withDescription("Output format"),
              Flag.withDefault("table"),
            ),
@@ -416,18 +418,18 @@ const Root = Spec.make(typeof OPENCODE_CLI_NAME === "string" ? OPENCODE_CLI_NAME
          description: "Delete a session and its child sessions",
          params: {
            ...ServerParams,
-            sessionID: Argument.string("sessionID").pipe(Argument.withDescription("Session ID to delete")),
+            sessionID: Argument.String("sessionID").pipe(Argument.withDescription("Session ID to delete")),
          },
        }),
        Spec.make("export", {
          description: "Export session data as JSON",
          params: {
            ...ServerParams,
-            session: Argument.string("session").pipe(
+            session: Argument.String("session").pipe(
              Argument.withDescription("Session ID to export"),
              Argument.optional,
            ),
-            sanitize: Flag.boolean("sanitize").pipe(
+            sanitize: Flag.Boolean("sanitize").pipe(
              Flag.withDescription("Redact sensitive transcript and file data"),
              Flag.withDefault(false),
            ),
@@ -437,8 +439,8 @@ const Root = Spec.make(typeof OPENCODE_CLI_NAME === "string" ? OPENCODE_CLI_NAME
          description: "Import session data from a JSON file or URL",
          params: {
            ...ServerParams,
-            file: Argument.string("file").pipe(Argument.withDescription("JSON file or URL to import")),
-            directory: Flag.string("directory").pipe(
+            file: Argument.String("file").pipe(Argument.withDescription("JSON file or URL to import")),
+            directory: Flag.String("directory").pipe(
              Flag.withDescription("Directory in which to import the session"),
              Flag.optional,
            ),
@@ -456,8 +458,8 @@ const Root = Spec.make(typeof OPENCODE_CLI_NAME === "string" ? OPENCODE_CLI_NAME
        Spec.make("get", {
          description: "Get service configuration",
          params: {
-            key: Argument.string("key").pipe(Argument.withDescription("Service setting or env"), Argument.optional),
-            name: Argument.string("name").pipe(
+            key: Argument.String("key").pipe(Argument.withDescription("Service setting or env"), Argument.optional),
+            name: Argument.String("name").pipe(
              Argument.withDescription("Environment variable name"),
              Argument.optional,
            ),
@@ -466,11 +468,11 @@ const Root = Spec.make(typeof OPENCODE_CLI_NAME === "string" ? OPENCODE_CLI_NAME
        Spec.make("set", {
          description: "Set service configuration",
          params: {
-            key: Argument.string("key").pipe(Argument.withDescription("Service setting or env")),
-            value: Argument.string("value").pipe(
+            key: Argument.String("key").pipe(Argument.withDescription("Service setting or env")),
+            value: Argument.String("value").pipe(
              Argument.withDescription("Setting value or environment variable name"),
            ),
-            nestedValue: Argument.string("env-value").pipe(
+            nestedValue: Argument.String("env-value").pipe(
              Argument.withDescription("Environment variable value"),
              Argument.optional,
            ),
@@ -479,8 +481,8 @@ const Root = Spec.make(typeof OPENCODE_CLI_NAME === "string" ? OPENCODE_CLI_NAME
        Spec.make("unset", {
          description: "Unset service configuration",
          params: {
-            key: Argument.string("key").pipe(Argument.withDescription("Service setting or env")),
-            name: Argument.string("name").pipe(
+            key: Argument.String("key").pipe(Argument.withDescription("Service setting or env")),
+            name: Argument.String("name").pipe(
              Argument.withDescription("Environment variable name"),
              Argument.optional,
            ),
@@ -497,7 +499,7 @@ const Root = Spec.make(typeof OPENCODE_CLI_NAME === "string" ? OPENCODE_CLI_NAME
    Spec.make("pair", {
      description: "Show server pairing information",
      params: {
-        url: Flag.string("url").pipe(
+        url: Flag.String("url").pipe(
          Flag.withDescription("Advertise an external HTTP(S) server URL in the pairing QR code"),
          Flag.mapTryCatch(
            (value) => {
@@ -515,15 +517,15 @@ const Root = Spec.make(typeof OPENCODE_CLI_NAME === "string" ? OPENCODE_CLI_NAME
    Spec.make("serve", {
      description: "Start the v2 API and web server",
      params: {
-        hostname: Flag.string("hostname").pipe(Flag.optional),
-        port: Flag.integer("port").pipe(Flag.optional),
-        cors: Flag.string("cors").pipe(
+        hostname: Flag.String("hostname").pipe(Flag.optional),
+        port: Flag.Int("port").pipe(Flag.optional),
+        cors: Flag.String("cors").pipe(
          Flag.withSchema(Schema.NonEmptyString),
          Flag.withDescription("Additional allowed CORS origin (repeat for multiple origins)"),
          Flag.atLeast(0),
        ),
-        service: Flag.boolean("service").pipe(Flag.withDefault(false)),
-        stdio: Flag.boolean("stdio").pipe(Flag.withDefault(false)),
+        service: Flag.Boolean("service").pipe(Flag.withDefault(false)),
+        stdio: Flag.Boolean("stdio").pipe(Flag.withDefault(false)),
      },
    }),
  ],
@@ -7,8 +7,8 @@ import { Config } from "effect"
 // The opencode server password: sent by clients connecting to an explicit
 // --server, and adopted by a manually run or standalone server. The legacy
 // name is still honored.
-export const password = Config.redacted("OPENCODE_PASSWORD").pipe(
-  Config.orElse(() => Config.redacted("OPENCODE_SERVER_PASSWORD")),
+export const password = Config.Redacted("OPENCODE_PASSWORD").pipe(
+  Config.orElse(() => Config.Redacted("OPENCODE_SERVER_PASSWORD")),
  Config.withDefault(undefined),
 )

@@ -1,7 +1,8 @@
 #!/usr/bin/env bun

 import { NodeRuntime, NodeServices } from "@effect/platform-node"
-import { Effect } from "effect"
+import { Cause, Effect } from "effect"
+import { getErrorReported } from "effect/Runtime"
 import { Commands } from "./commands/commands"
 import { Runtime } from "./framework/runtime"
 import { Observability } from "@opencode/util/observability"
@@ -130,5 +131,15 @@ Effect.gen(function* () {
  Effect.provide(NodeServices.layer),
  Effect.scoped,
  Effect.tap(() => Effect.sync(() => process.exit(process.exitCode ?? 0))),
-  NodeRuntime.runMain,
+  // runMain's default reporter logs the fatal cause to stdout. Write it to stderr instead: the
+  // desktop and `Service.ensure` only capture stderr from `serve --service`, so this is the only
+  // channel through which a startup failure's reason reaches the user.
+  Effect.tapCause((cause) =>
+    Effect.sync(() => {
+      if (Cause.hasInterruptsOnly(cause)) return
+      if (!getErrorReported(Cause.squash(cause))) return
+      process.stderr.write(Cause.pretty(cause) + "\n")
+    }),
+  ),
+  NodeRuntime.runMain({ disableErrorReporting: true }),
 )
@@ -4,6 +4,7 @@ import { Service, type Info } from "@opencode/client/effect/service"
 import path from "node:path"
 import { Effect, FileSystem, Schedule, Schema } from "effect"
 import { HttpServer } from "effect/unstable/http"
+import { NetAddress } from "effect/unstable/net"
 import { OPENCODE_VERSION } from "../version"

 const infoJson = Schema.fromJsonString(Service.Info)
@@ -11,7 +12,7 @@ const encodeInfo = Schema.encodeEffect(infoJson)
 const decodeInfo = Schema.decodeUnknownEffect(infoJson)

 export const register = Effect.fnUntraced(function* (options: {
-  readonly address: HttpServer.Address
+  readonly address: NetAddress.SocketAddress
  readonly password: string
  readonly id: string
  readonly file: string
@@ -1,17 +1,22 @@
 import { Global } from "@opencode/util/global"
 import { AppProcess } from "@opencode/util/process"
 import { OPENCODE_ARTIFACT, OPENCODE_CHANNEL, OPENCODE_LOCAL, OPENCODE_VERSION } from "../version"
-import { Context, Duration, Effect, FileSystem, Layer, Ref } from "effect"
+import { Context, Duration, Effect, FileSystem, Layer, Option, Ref, Schema } from "effect"
 import { ChildProcess } from "effect/unstable/process"
 import { parse, type ParseError } from "jsonc-parser"
 import path from "node:path"
 import { action, parseReleaseVersion, type Policy } from "./updater-action"

-export const methods = ["curl", "npm", "pnpm", "bun", "yarn"] as const
+export const methods = ["curl", "npm", "pnpm", "bun", "yarn", "vp", "brew"] as const
+
 export type Method = (typeof methods)[number]
 export type RunResult = { readonly type: "available" | "installed"; readonly version: string }
 export type CheckResult = RunResult | { readonly type: "unavailable"; readonly message: string }

+const decodeVpPackages = Schema.decodeUnknownOption(
+  Schema.fromJsonString(Schema.Array(Schema.Struct({ name: Schema.String }))),
+)
+
 export interface Interface {
  readonly run: (onInstall?: (version: string) => void) => Effect.Effect<RunResult | undefined>
  readonly check: () => Effect.Effect<CheckResult | undefined, Error>
@@ -96,6 +101,13 @@ const make = Effect.gen(function* () {
      process.platform === "win32" ? "opencode.exe" : "opencode",
    )
    if (path.resolve(process.execPath) === path.resolve(binary)) return "curl"
+    const executable = yield* fs.realPath(process.execPath).pipe(Effect.orElseSucceed(() => process.execPath))
+    if (
+      ["opencode-beta", "opencode-v2"].some((name) =>
+        executable.includes(`${path.sep}Cellar${path.sep}${name}${path.sep}`),
+      )
+    )
+      return "brew"
    if (!installedPackage) return

    const checks: ReadonlyArray<{ method: Method; command: string[] }> = [
@@ -103,22 +115,30 @@ const make = Effect.gen(function* () {
      { method: "pnpm", command: ["pnpm", "list", "-g", "--depth=0", installedPackage] },
      { method: "bun", command: ["bun", "pm", "ls", "-g"] },
      { method: "yarn", command: ["yarn", "global", "list"] },
+      { method: "vp", command: ["vp", "list", "-g", "--json", installedPackage] },
    ]
    const results = yield* Effect.forEach(
      checks,
      (check) => exec(check.command).pipe(Effect.map((result) => ({ check, result }))),
      { concurrency: "unbounded" },
    )
-    return results.find((result) => result.result.stdout.includes(installedPackage))?.check.method
+    return results.find((result) => {
+      if (result.check.method !== "vp") return result.result.stdout.includes(installedPackage)
+      // Vite+ repeats the filter in its successful no-match message, so substring detection would be a false positive.
+      return Option.exists(decodeVpPackages(result.result.stdout), (packages) =>
+        packages.some((item) => item.name === installedPackage),
+      )
+    })?.check.method
  })

  const removal = (method: Method) => {
-    if (method === "curl" || !installedPackage) return undefined
+    if (method === "curl" || method === "brew" || !installedPackage) return undefined
    const commands = {
      npm: ["npm", "uninstall", "--global", installedPackage],
      pnpm: ["pnpm", "remove", "--global", installedPackage],
      bun: ["bun", "remove", "--global", installedPackage],
      yarn: ["yarn", "global", "remove", installedPackage],
+      vp: ["vp", "uninstall", "-g", installedPackage],
    }
    const command = commands[method]
    return {
@@ -133,11 +153,12 @@ const make = Effect.gen(function* () {
    }
  }

-  const release = Effect.fnUntraced(function* () {
+  const release = Effect.fnUntraced(function* (method?: Method) {
+    const distribution = method === "brew" ? "homebrew" : "npm"
    const response = yield* Effect.tryPromise({
      try: (signal) =>
        fetch(
-          `https://opencode.ai/update/api/${encodeURIComponent(channel)}/${encodeURIComponent(OPENCODE_ARTIFACT)}/npm?current=${encodeURIComponent(OPENCODE_VERSION)}`,
+          `https://opencode.ai/update/api/${encodeURIComponent(channel)}/${encodeURIComponent(OPENCODE_ARTIFACT)}/${distribution}?current=${encodeURIComponent(OPENCODE_VERSION)}`,
          {
            signal: AbortSignal.any([signal, AbortSignal.timeout(10_000)]),
          },
@@ -153,7 +174,11 @@ const make = Effect.gen(function* () {
    return { package: data.metadata.package, version: data.version }
  })

-  const latest = () => release().pipe(Effect.map((data) => data.version))
+  const latest = () =>
+    method().pipe(
+      Effect.flatMap(release),
+      Effect.map((data) => data.version),
+    )

  const temporaryDirectory = (prefix: string) =>
    Effect.acquireRelease(fs.makeTempDirectory({ directory: global.cache, prefix }), (directory) =>
@@ -163,12 +188,12 @@ const make = Effect.gen(function* () {
  const upgrade = Effect.fnUntraced(function* (method: Method, input: string) {
    if (!parseReleaseVersion(input)) return yield* Effect.fail(new Error(`Invalid version: ${input}`))
    const version = input.trim().replace(/^v/, "")
-    const packageName = (yield* release()).package
+    const packageName = (yield* release(method)).package
    const target = `${packageName}@${version}`
    if (installedPackage && packageName !== installedPackage && (method === "pnpm" || method === "yarn")) {
      return yield* Effect.fail(new Error(`Reinstall ${target} with ${method} to migrate from ${installedPackage}.`))
    }
-    const commands: Record<Exclude<Method, "bun" | "curl">, string[]> = {
+    const commands: Record<Exclude<Method, "bun" | "curl" | "brew">, string[]> = {
      // Keep the old package: uninstalling it can unlink the replacement command.
      npm: [
        "npm",
@@ -182,6 +207,10 @@ const make = Effect.gen(function* () {
      ],
      pnpm: ["pnpm", "add", "--global", `--allow-build=${packageName}`, target],
      yarn: ["yarn", "global", "add", target],
+      vp:
+        installedPackage && packageName !== installedPackage
+          ? ["vp", "install", "-g", "--force", target]
+          : ["vp", "update", "-g", target],
    }
    const result = yield* Effect.scoped(
      Effect.gen(function* () {
@@ -202,6 +231,7 @@ const make = Effect.gen(function* () {
          if (download.code !== 0) return download
          return yield* exec(["bash", installer, "--version", version, "--no-modify-path"], "5 minutes")
        }
+        if (method === "brew") return yield* exec(["brew", "upgrade", packageName], "5 minutes")
        return yield* exec(commands[method], "5 minutes")
      }),
    ).pipe(Effect.mapError((cause) => new Error(`Failed to update with ${method}`, { cause })))
@@ -1,5 +1,6 @@
 import { NodeSocket } from "@effect/platform-node"
 import { Effect, Schema, Stdio, Stream } from "effect"
+import { Socket } from "effect/unstable/socket"

 const Response = Schema.fromJsonString(Schema.Struct({ value: Schema.NullOr(Schema.String) }))
 const Port = Schema.NumberFromString.check(Schema.isInt(), Schema.isGreaterThan(0), Schema.isLessThanOrEqualTo(65535))
@@ -10,16 +11,15 @@ export const askpass = Effect.gen(function* () {
  const port = yield* Schema.decodeUnknownEffect(Port)(process.env.OPENCODE_SSH_ASKPASS_PORT)
  const stdio = yield* Stdio.Stdio
  const socket = yield* NodeSocket.makeNet({ host: "127.0.0.1", port })
-  const write = yield* socket.writer
+  const writer = yield* socket.writer
  const response = { text: "" }
  yield* Effect.all(
    [
-      socket.runString((text) =>
-        Effect.sync(() => {
-          response.text += text
-        }),
-      ),
-      write(
+      Effect.gen(function* () {
+        const pull = yield* Socket.readerString(socket)
+        while (true) response.text += (yield* pull).join("")
+      }).pipe(Effect.catchReason("SocketError", "SocketCloseError", () => Effect.void)),
+      writer.write(
        JSON.stringify({
          token: process.env.OPENCODE_SSH_ASKPASS_TOKEN,
          text: process.argv.slice(2).join(" "),
@@ -4,6 +4,7 @@ import { Global } from "@opencode/util/global"
 import { OPENCODE_VERSION } from "../src/version"
 import { expect, test } from "bun:test"
 import { Effect, Schema } from "effect"
+import { NetAddress } from "effect/unstable/net"
 import fs from "node:fs/promises"
 import os from "node:os"
 import path from "node:path"
@@ -501,7 +502,7 @@ test("service registration replaces a stale owner with the bound address", async
  try {
    const cleanup = await Effect.runPromise(
      ServiceRegistration.register({
-        address: { _tag: "TcpAddress", hostname: "127.0.0.1", port: 4321 },
+        address: NetAddress.inetAddressFromIpStringUnsafe("127.0.0.1", 4321),
        password: "secret",
        id: "owner",
        file: registration,
@@ -19,6 +19,7 @@ function fixture(
  } = () => ({}),
  name = "@opencode/cli",
  failCleanup = false,
+  releasePackage = name,
 ) {
  return Effect.gen(function* () {
    const fs = yield* FileSystem.FileSystem
@@ -34,7 +35,7 @@ function fixture(
    yield* Effect.acquireRelease(
      Effect.sync(() =>
        spyOn(globalThis, "fetch").mockImplementation(
-          Object.assign(async () => Response.json({ version: "2.3.4", metadata: { package: name } }), {
+          Object.assign(async () => Response.json({ version: "2.3.4", metadata: { package: releasePackage } }), {
            preconnect: fetch.preconnect,
          }),
        ),
@@ -106,6 +107,7 @@ const installs = [
    command: ["pnpm", "add", "--global", "--allow-build=@opencode/cli", "@opencode/cli@2.3.4-beta.1"],
  },
  { method: "yarn", command: ["yarn", "global", "add", "@opencode/cli@2.3.4-beta.1"] },
+  { method: "vp", command: ["vp", "update", "-g", "@opencode/cli@2.3.4-beta.1"] },
 ] as const

 installs.forEach(({ method, command }) => {
@@ -117,6 +119,25 @@ installs.forEach(({ method, command }) => {
    }),
  )
 })
+
+it.live("vp force-installs a renamed V2 package that replaces the existing binary owner", () =>
+  Effect.gen(function* () {
+    const test = yield* fixture(() => ({}), "@opencode/cli", false, "@opencode/cli-node")
+    yield* test.updater.upgrade("vp", "v2.3.4-beta.1")
+    expect(test.commands).toEqual([["vp", "install", "-g", "--force", "@opencode/cli-node@2.3.4-beta.1"]])
+  }),
+)
+
+it.live("vp removes the package from its managed global store", () =>
+  Effect.gen(function* () {
+    const test = yield* fixture()
+    const removal = test.updater.removal("vp")
+    if (!removal) return yield* Effect.die("Expected vp removal command")
+    expect(removal.command).toEqual(["vp", "uninstall", "-g", "@opencode/cli"])
+    yield* removal.run
+    expect(test.commands).toEqual([["vp", "uninstall", "-g", "@opencode/cli"]])
+  }),
+)
 ;[0, 1].forEach((exitCode) => {
  it.live(`bun isolates and removes its install cache after exit ${exitCode}`, () =>
    Effect.gen(function* () {
@@ -200,11 +221,19 @@ it.live("install failures expose stderr and process errors do not report success
    expect(missing.commands).toHaveLength(1)
  }),
 )
-;(["npm", "pnpm", "bun", "yarn", undefined] as const).forEach((method) => {
+;(["npm", "pnpm", "bun", "yarn", "vp", undefined] as const).forEach((method) => {
  it.live(`method detection identifies ${method ?? "an unknown installation"} using the V2 package`, () =>
    Effect.gen(function* () {
      const test = yield* fixture((command) => ({
-        stdout: Buffer.from(command.command === method ? "@opencode/cli@2.3.4" : "opencode-ai@1.0.0"),
+        stdout: Buffer.from(
+          command.command === method
+            ? method === "vp"
+              ? JSON.stringify([{ name: "@opencode/cli", version: "2.3.4" }])
+              : "@opencode/cli@2.3.4"
+            : command.command === "vp"
+              ? "[]"
+              : "opencode-ai@1.0.0",
+        ),
      }))
      expect(yield* test.updater.method()).toBe(method)
      expect(test.commands).toEqual([
@@ -212,6 +241,7 @@ it.live("install failures expose stderr and process errors do not report success
        ["pnpm", "list", "-g", "--depth=0", "@opencode/cli"],
        ["bun", "pm", "ls", "-g"],
        ["yarn", "global", "list"],
+        ["vp", "list", "-g", "--json", "@opencode/cli"],
      ])
    }),
  )
@@ -225,7 +255,16 @@ it.live("method detection tolerates unavailable package managers", () =>
        : { error: new AppProcess.AppProcessError({ command: command.command }) },
    )
    expect(yield* test.updater.method()).toBe("yarn")
-    expect(test.commands).toHaveLength(4)
+    expect(test.commands).toHaveLength(5)
+  }),
+)
+
+it.live("vp detection ignores no-match output that repeats the package name", () =>
+  Effect.gen(function* () {
+    const test = yield* fixture((command) => ({
+      stdout: Buffer.from(command.command === "vp" ? "No global packages matching '@opencode/cli'." : ""),
+    }))
+    expect(yield* test.updater.method()).toBeUndefined()
  }),
 )

@@ -265,13 +304,16 @@ if (typeof OPENCODE_CLI_NAME === "string" && OPENCODE_CLI_NAME === "opencode2-no
      expect(yield* test.updater.method()).toBe("npm")
      yield* test.updater.upgrade("npm", "v2.3.4")
      yield* test.updater.upgrade("pnpm", "v2.3.4")
+      yield* test.updater.upgrade("vp", "v2.3.4")
      expect(test.commands).toEqual([
        ["npm", "list", "-g", "--depth=0", "@opencode/cli-node"],
        ["pnpm", "list", "-g", "--depth=0", "@opencode/cli-node"],
        ["bun", "pm", "ls", "-g"],
        ["yarn", "global", "list"],
+        ["vp", "list", "-g", "--json", "@opencode/cli-node"],
        ["npm", "install", "--global", "@opencode/cli-node@2.3.4"],
        ["pnpm", "add", "--global", "--allow-build=@opencode/cli-node", "@opencode/cli-node@2.3.4"],
+        ["vp", "update", "-g", "@opencode/cli-node@2.3.4"],
      ])
    }),
  )
@@ -35,6 +35,12 @@ describe("upgrade command", () => {
    expect(result.events).toEqual([{ method: "bun", version: "2.0.0" }])
  })

+  test("accepts vp as an explicit installation method", async () => {
+    const result = await cli(["2.0.0", "--method", "vp"])
+    expect(result.exitCode).toBe(0)
+    expect(result.events).toEqual([{ method: "vp", version: "2.0.0" }])
+  })
+
  test("skips the already installed version", async () => {
    const result = await cli(["v0.0.0-beta-old"])
    expect(result.exitCode).toBe(0)
@@ -50,7 +56,7 @@ describe("upgrade command", () => {
  })

  test("rejects unsupported methods before attempting an upgrade", async () => {
-    const result = await cli(["--method", "brew"])
+    const result = await cli(["--method", "apt"])
    expect(result.exitCode).not.toBe(0)
    expect(result.events).toEqual([])
  })
@@ -1,7 +1,7 @@
 {
  "$schema": "https://json.schemastore.org/package.json",
  "name": "@opencode/client",
-  "version": "2.0.8",
+  "version": "2.0.11",
  "type": "module",
  "license": "MIT",
  "repository": {
@@ -37,7 +37,7 @@
    "@opencode/protocol": "workspace:*"
  },
  "peerDependencies": {
-    "effect": "4.0.0-rc.112",
+    "effect": "4.0.0-rc.115",
    "solid-js": ">=1.9.0"
  },
  "peerDependenciesMeta": {
@@ -1,9 +1,27 @@
 #!/usr/bin/env bun

 import { $ } from "bun"
+import path from "node:path"
 import { fileURLToPath } from "node:url"

 process.chdir(fileURLToPath(new URL("..", import.meta.url)))

 await $`rm -rf dist`
 await $`bun tsc -p tsconfig.build.json`
+const root = path.resolve("src")
+const result = await Bun.build({
+  entrypoints: await Array.fromAsync(new Bun.Glob("**/*.ts").scan({ cwd: root, absolute: true })).then((files) =>
+    files.filter((file) => !file.endsWith(".d.ts")),
+  ),
+  root,
+  outdir: "dist",
+  target: "node",
+  format: "esm",
+  packages: "external",
+  splitting: true,
+  naming: {
+    entry: "[dir]/[name].[ext]",
+    chunk: "chunks/[name]-[hash].[ext]",
+  },
+})
+if (!result.success) throw new AggregateError(result.logs, "Failed to build Client")
@@ -131,7 +131,9 @@ export const ensure = Effect.fn("service.ensure")(function* (options: EnsureOpti
  }).pipe(
    Effect.repeat({
      until: Option.isSome,
-      schedule: Schedule.max([Schedule.spaced(timing.pollInterval), Schedule.recurs(timing.attempts)]),
+      // Probes run sequentially, so a slow probe stretches each iteration; bound the loop by wall clock
+      // like the Promise variant rather than by attempt count.
+      schedule: Schedule.spaced(timing.pollInterval).pipe(Schedule.upTo({ duration: timing.promiseTimeout })),
    }),
    Effect.ensuring(Effect.sync(() => contenders.forEach((contender) => contender.release()))),
  )
@@ -456,6 +456,10 @@ export type V2EventServerConnected = {
  data: {}
 }

+export type ModelSettings = { compaction?: ProviderCompaction } & { [x: string]: any }
+
+export type ConfigModelSettings = { compaction?: ProviderCompaction } & { [x: string]: JsonValue | null }
+
 export type ProviderSettings = {
  timeout?: number | false
  chunkTimeout?: number
@@ -1656,19 +1660,19 @@ export type SessionInboxMove = {
  payload: SessionInboxMovePayload
 }

+export type ModelVariant = {
+  id: string
+  settings?: ModelSettings
+  headers?: { [x: string]: string }
+  body?: { [x: string]: any }
+}
+
 export type ProviderRequest = {
  settings: ProviderSettings
  headers: { [x: string]: string }
  body: { [x: string]: any }
 }

-export type ModelVariant = {
-  id: string
-  settings?: ProviderSettings
-  headers?: { [x: string]: string }
-  body?: { [x: string]: any }
-}
-
 export type ProviderInfo = {
  id: string
  canonical?: string
@@ -1898,7 +1902,7 @@ export type ModelInfo = {
  name: string
  compatibility?: ModelCompatibility
  package?: string
-  settings?: ProviderSettings
+  settings?: ModelSettings
  headers?: { [x: string]: string }
  body?: { [x: string]: any }
  capabilities: ModelCapabilities
@@ -2107,13 +2111,13 @@ export type ConfigEntry =
                name?: string
                compatibility?: ModelCompatibility
                package?: string
-                settings?: ConfigProviderSettings
+                settings?: ConfigModelSettings
                headers?: { [x: string]: string }
                body?: { [x: string]: JsonValue }
                capabilities?: ModelCapabilities
                variants?: Array<{
                  id: string
-                  settings?: ConfigProviderSettings
+                  settings?: ConfigModelSettings
                  headers?: { [x: string]: string }
                  body?: { [x: string]: JsonValue }
                }>
@@ -1,6 +1,5 @@
 export type EnsureTiming = {
  readonly pollInterval: number
-  readonly attempts: number
  readonly requestTimeout: number
  readonly spawnDelay: number
  readonly maxSpawnDelay: number
@@ -11,9 +10,11 @@ export type EnsureTiming = {

 const timings = new WeakMap<object, EnsureTiming>()

+// A freshly spawned service registers in ~250 ms, so the poll cadence is a large share of the
+// time a client waits for it. Probes are sequential, so the wait between them only matters while
+// the connection is refused; both variants give up after promiseTimeout of wall-clock time.
 export const defaultEnsureTiming: EnsureTiming = {
-  pollInterval: 100,
-  attempts: 1_200,
+  pollInterval: 25,
  requestTimeout: 2_000,
  spawnDelay: 5_000,
  maxSpawnDelay: 30_000,
@@ -2,7 +2,6 @@ import { withEnsureTiming } from "../../src/service-timing"

 const timing = {
  pollInterval: 20,
-  attempts: 120,
  requestTimeout: 100,
  spawnDelay: 200,
  maxSpawnDelay: 1_200,
@@ -13,8 +13,8 @@ The idea of code mode was originally introduced by Cloudflare. See

 ## How it differs from JavaScript

- **Only supported APIs are available.** Programs can use the provided tools and supported JavaScript built-ins. APIs
-  such as `fetch`, timers, `process`, filesystem access, imports, and modules are unavailable.
+- **Only supported APIs are available.** Programs can use the provided tools, supported JavaScript built-ins, and the
+  globals the host adds through extensions. Timers, `process`, filesystem access, imports, and modules are unavailable.
 - **Unfinished work is interrupted.** Tool calls and async functions start when called. When the program finishes,
  anything still running is interrupted. Unhandled rejections from un-awaited promises are returned as warnings.
 - **REPL-style results.** Without an explicit `return`, the final top-level expression becomes the result. `undefined`
@@ -94,11 +94,19 @@ receive `{ extension, name, args }`. An `after` hook also receives how the call
 `failure` with its error, or `interrupted`). A failing `before` hook denies the call, and the program catches the
 failure as a thrown error.

-### `Values`
+### `Extension.make`

-`Values` exports the runtime's non-JSON value classes: `Values.URL`, `Values.URLSearchParams`, `Values.Date`,
-`Values.RegExp`, `Values.Map`, `Values.Set`, and `Values.Promise`. The interpreter recognizes these by class; a
-program's `new URL(...)` is a `Values.URL` wrapping the host `URL`. `Values.isValue` narrows to the data-like kinds.
+Extensions are host functions a program calls directly as globals, such as `fetch`. Unlike tools they are not in the
+catalog, not counted against `maxToolCalls`, and not described to the model; the host decides what they mean.
+
+```ts
+const web = Extension.make({ name: "web", globals: { fetch: (url: string) => globalThis.fetch(url) } })
+const runtime = CodeMode.make({ tools, extensions: [web] })
+```
+
+Every value crossing in either direction is converted, never shared: arguments come in as copies, results go out as
+copies, and a function inside a result is callable the same way. A global that shadows a built-in or another
+extension throws at `CodeMode.make`.

 ### OpenAPI tools

@@ -15,8 +15,7 @@ ultimate source of truth. Upstream test262 files run verbatim from `test/test262
 ## Source and execution model

 - [x] JavaScript parsed with the latest syntax accepted by Acorn, then restricted by the interpreter allowlist.
- [x] Erasable TypeScript syntax, including type annotations, type declarations, assertions, and non-null assertions.
-      TypeScript is transpiled first; the emitted JavaScript must still use the supported subset.
+      TypeScript-only syntax is rejected rather than stripped before execution.
 - [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] The host boundary is `JSON.stringify` plus a short table. The program result and tool arguments cross as
@@ -25,11 +24,11 @@ ultimate source of truth. Upstream test262 files run verbatim from `test/test262
      and Map, RegExp, and generators serialize as `{}`. A bare `undefined` result is `null`.
      Tool results come back the way `JSON.parse(JSON.stringify(result))` would. The table, where a value cannot
      be JSON but what the program meant is clear: a promise is awaited (a rejection fails the program), a Set
-      crosses as an array, a URLSearchParams as its query string, an Error as `{ name, message, ...own }`, a
+      crosses as an array, a URLSearchParams as its query string, an Error as `{ name, message, ...own enumerable }`, a
      Uint8Array is rejected with a hint to encode as text, and own `__proto__` keys are dropped so merging tool
      inputs or results cannot replace a prototype. In-program `JSON.stringify` keeps JS behavior except for the
      Error form and a promise, which is a `TypeError` with an await hint rather than a silent `{}`.
- [x] Live Date, RegExp, Map, Set, URL, URLSearchParams, and Uint8Array values inside CodeMode.
+- [x] Live Date, RegExp, Map, Set, URL, URLSearchParams, Headers, and Uint8Array 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.
@@ -39,16 +38,17 @@ ultimate source of truth. Upstream test262 files run verbatim from `test/test262
      10,000,000 elements (`Array(n)`, `length =`, `Array.from`, `split`, `matchAll`, `concat`, `flat`; below the JS
      maximum of 2^32 - 1), and 10,000 pending promises at once. Exceeding one throws a `RangeError`. A single regular
      expression match can still run long on a pathological pattern; the host regex engine has no interrupt hook.
- [ ] Strict-mode early errors: duplicate parameter names, `yield` as an identifier, and a trailing comma after a
-      rest parameter are accepted unless the program itself begins with `"use strict"`.
- [ ] Valid JavaScript rejected by TypeScript transpilation before interpretation, such as `in` inside a destructuring
-      default in a `for...of` head and Unicode-escaped keywords.
+- [x] A trailing comma after a rest parameter is a syntax error, with or without `"use strict"`.
+- [x] A program that begins with `"use strict"` rejects `yield` as an identifier and duplicate parameter names at
+      parse time. Without it, `yield` is an ordinary binding.
+- [ ] Duplicate parameter names in non-strict code throw when the function is called, instead of binding the last
+      parameter as JavaScript does.

 ## 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, URLSearchParams, custom synchronous
-      iterators, and synchronous generators.
+- [x] Array literals, including holes and spread from arrays, strings, Maps, Sets, URLSearchParams, Headers, custom
+      synchronous iterators, and synchronous generators.
 - [x] Object literals with shorthand, computed string/number keys, and spread following ToObject: data objects and
      arrays copy own enumerable keys, strings copy index keys, and other values contribute nothing.
 - [x] Template literals with interpolation.
@@ -56,7 +56,7 @@ ultimate source of truth. Upstream test262 files run verbatim from `test/test262
 - [x] `NaN` and `Infinity` globals.
 - [ ] BigInt literals and in-interpreter BigInt arithmetic; BigInt remains invalid at JSON-like host boundaries.
 - [ ] Arbitrary Symbol primitive values and symbol-keyed properties. The confined `Symbol.iterator` and
-      `Symbol.asyncIterator` keys are available only for custom iterator protocols.
+      `Symbol.asyncIterator` keys are available only for the iterator protocols.
 - [ ] Tagged-template calls.
 - [ ] Getter and setter definitions in object literals.

@@ -95,9 +95,10 @@ ultimate source of truth. Upstream test262 files run verbatim from `test/test262
 - [x] `if`/`else` and conditional expressions.
 - [x] `switch`, including default clauses and fallthrough.
 - [x] `for`, `while`, and `do...while`.
- [x] `for...of` over arrays, strings, Maps, Sets, URLSearchParams, custom synchronous iterators, and confined
-      synchronous generators. Abrupt completion invokes the iterator's optional `return()`.
- [x] `for...in` over own keys of plain objects, arrays, strings, and tool references; other values iterate nothing.
+- [x] `for...of` over arrays, strings, Maps, Sets, URLSearchParams, Headers, Uint8Arrays, built-in iterators, custom
+      synchronous iterators, and confined synchronous generators. Abrupt completion invokes the iterator's optional `return()`.
+- [x] `for...in` over own keys of plain objects, arrays, strings, and tool references. `null`, `undefined`, and other
+      non-objects iterate nothing. An un-awaited promise throws rather than iterating.
 - [x] Unlabeled `break` and `continue`.
 - [x] `try`, `catch`, optional catch bindings, and `finally`.
 - [x] `throw` with arbitrary values.
@@ -111,7 +112,8 @@ ultimate source of truth. Upstream test262 files run verbatim from `test/test262
 ## Functions and callbacks

 - [x] Function declarations, function expressions, and arrow functions.
- [x] Synchronous and `async` functions.
+- [x] Synchronous and `async` functions. A line break between `function` and the name is allowed, as in JavaScript;
+      a line break between `async` and `function` is not an async function.
 - [x] Closures, recursion, default parameters, rest parameters, and destructured parameters.
 - [x] A call depth limit of 10000: deeper nesting throws a catchable `RangeError: Maximum call stack size exceeded`
      at the overflowing call instead of running until the timeout. Callbacks invoked by built-ins count below the
@@ -127,7 +129,7 @@ ultimate source of truth. Upstream test262 files run verbatim from `test/test262
      string). A detached method loses its receiver, as in JS: `values.filter("abc".includes)` is a `TypeError`
      because `includes` is called without a string `this`.
 - [x] Constructors work as callbacks with JS call semantics: `Error` types construct (`messages.map(Error)`),
-      and new-requiring constructors (`Map`, `Set`, `URL`, `URLSearchParams`, `Promise`) throw a `TypeError`,
+      and new-requiring constructors (`Map`, `Set`, `URL`, `URLSearchParams`, `Headers`, `Promise`) throw a `TypeError`,
      like JS.
 - [x] Tool references and detached `Promise` statics are rejected as callbacks with a hint to wrap them in an
      arrow function.
@@ -146,7 +148,6 @@ ultimate source of truth. Upstream test262 files run verbatim from `test/test262
      `Array.prototype.push.name === "push"`).
 - [ ] A named function expression's name is not bound inside its own body.
 - [ ] Redeclaring a function in the same scope is rejected; in JavaScript the last declaration wins.
- [ ] A line terminator between `async function` and the function name.
 - [ ] Generator and async generator functions evaluate parameter defaults and destructuring at the first `next()`
      rather than at the call, so their errors are not thrown synchronously.
 - [x] Synchronous and async generator declarations/expressions, `yield`, and `yield*`, including lazy bodies,
@@ -179,11 +180,12 @@ ultimate source of truth. Upstream test262 files run verbatim from `test/test262
 - [x] Sequence expressions (the comma operator).
 - [x] `await` for CodeMode promises and callable thenables; a plain value passes through unchanged, though every
      `await` still defers its continuation one reaction turn.
- [x] `new` for Array, Object, Error types, Date, RegExp, Map, Set, URL, URLSearchParams, and Promise. `new` on any
-      other value throws a catchable `TypeError` naming the callee: other built-in functions such as `Number` say
-      `new` is unsupported and point at the plain call, user-defined functions report the constructor gap below, and
-      non-callable values are not constructors. Error constructors take the ES2022 options object, so
-      `new Error(message, { cause })` installs a non-enumerable `cause` when the option is present.
+- [x] `new` for Array, Object, Error types, Date, RegExp, Map, Set, URL, URLSearchParams, Headers, and Promise. `new`
+      on any other value throws a catchable `TypeError` naming the callee: other built-in functions such as `Number`
+      say `new` is unsupported and point at the plain call, user-defined functions report the constructor gap below,
+      and non-callable values are not constructors. Error constructors take the ES2022 options object, so
+      `new Error(message, { cause })` installs a non-enumerable `cause` when the option is present. `Error.isError`
+      is true for every Error value.
 - [x] Arithmetic operators: `+`, `-`, `*`, `/`, `%`, and `**`.
 - [x] Equality and ordering: `==`, `!=`, `===`, `!==`, `<`, `<=`, `>`, and `>=`.
 - [x] Bitwise operators: `&`, `|`, `^`, `~`, `<<`, `>>`, and `>>>`.
@@ -273,8 +275,8 @@ ultimate source of truth. Upstream test262 files run verbatim from `test/test262
 - [x] `Object.is` for supported data values.
 - [x] `Object.groupBy` over finite collections and custom synchronous iterators/generators, with string-key coercion
      and plain-object results.
- [x] `Object.prototype` methods on values: `toString` (`"[object Array]"`), `toLocaleString`, `valueOf`,
-      `hasOwnProperty`, `isPrototypeOf`, and `propertyIsEnumerable`.
+- [x] `Object.prototype` methods on values: `toString` (`"[object Array]"`), `toLocaleString` (calls the value's
+      `toString`, as in JS), `valueOf`, `hasOwnProperty`, `isPrototypeOf`, and `propertyIsEnumerable`.

 ## Arrays

@@ -288,9 +290,14 @@ ultimate source of truth. Upstream test262 files run verbatim from `test/test262
      `lastIndexOf`.
 - [x] Aggregation: `reduce` and `reduceRight`.
 - [x] Ordering: `sort`, `toSorted`, `reverse`, and `toReversed`.
- [x] Access/copying: `at`, `slice`, `concat`, `flat`, `with`, and `join`.
+- [x] Access/copying: `at`, `slice`, `concat`, `flat`, `with`, `join`, and `toLocaleString` (each element's
+      `toLocaleString`, holes and nullish elements as empty strings).
 - [x] Mutation: `push`, `pop`, `shift`, `unshift`, `splice`, `fill`, and `copyWithin`.
- [x] Materialized iteration helpers: `keys`, `values`, and `entries` return arrays rather than iterators.
+- [x] `keys`, `values`, `entries`, and `[Symbol.iterator]` (the same function as `values`) return live iterator objects
+      with `next()` and `[Symbol.iterator]`, as in JS. Iterator objects are opaque references: they print as
+      `[opaque reference]`, serialize to `{}`, and cannot be passed to extensions. Every built-in collection iterator
+      shares one prototype. JavaScript gives each collection its own; the difference is not observable here because
+      `Object.getPrototypeOf` is not exposed.
 - [x] `length`, numeric indexing, index assignment, spread, and `for...of`.
 - [x] The `thisArg` argument of `Array.from` is accepted and ignored, like JS arrows.
 - [x] `Array.prototype.toSpliced`.
@@ -303,13 +310,13 @@ ultimate source of truth. Upstream test262 files run verbatim from `test/test262
      form, like `JSON.stringify`.
 - [ ] Argument coercion for `indexOf`, `lastIndexOf`, `includes`, `fill`, `flat`, `copyWithin`, and the `join`
      separator: JavaScript applies ToIntegerOrInfinity/ToString (including `valueOf`, strings, and `undefined`), the
-      interpreter requires numbers and strings; `includes()`/`indexOf()` with no argument should search for
-      `undefined`.
- [ ] Iterator objects from `keys`, `values`, and `entries` with a live `next()`.
+      interpreter requires numbers and strings. `indexOf()` and `lastIndexOf()` with no argument already search for
+      `undefined`; `includes()` still requires a value.

 ## Strings

- [x] Case/normalization: `toLowerCase`, `toUpperCase`, `normalize`.
+- [x] Case/normalization: `toLowerCase`, `toUpperCase`, `normalize`, and the `toLocaleLowerCase`/`toLocaleUpperCase`
+      aliases, which ignore their locale argument and apply the default Unicode casing.
 - [x] Trimming: `trim`, `trimStart`, and `trimEnd`, plus the Annex B `trimLeft` and `trimRight` aliases.
 - [x] Searching/tests: `includes`, `startsWith`, `endsWith`, `indexOf`, `lastIndexOf`, and `search`.
 - [x] Slicing/access: `slice`, `substring`, Annex B `substr`, `at`, `charAt`, `charCodeAt`, and `codePointAt`.
@@ -317,7 +324,7 @@ ultimate source of truth. Upstream test262 files run verbatim from `test/test262
 - [x] Regular-expression integration: `match`, materialized `matchAll`, `replace`, `replaceAll`, `split`, and `search`.
 - [x] `localeCompare`; locale and options arguments are currently ignored.
 - [x] `isWellFormed` and `toWellFormed`.
- [x] `toString`, `length`, numeric indexing, spread, and `for...of` by Unicode code point.
+- [x] `toString`, `length`, numeric indexing, spread, `for...of`, and `[Symbol.iterator]` by Unicode code point.
 - [x] Static `String.fromCharCode` and `String.fromCodePoint`.
 - [x] Native argument coercion for supported String methods; for example, `includes(1)` and `slice("1")` coerce like
      native JS, `split(undefined)` returns the whole string, and `includes`/`startsWith`/`endsWith` reject regular
@@ -333,7 +340,8 @@ ultimate source of truth. Upstream test262 files run verbatim from `test/test262
 - [x] Coercion functions: `Number`, `parseInt`, and `parseFloat`.
 - [x] Number predicates/parsers: `Number.isInteger`, `Number.isFinite`, `Number.isNaN`, `Number.isSafeInteger`,
      `Number.parseInt`, and `Number.parseFloat`.
- [x] Number formatting: `toFixed`, `toPrecision`, `toExponential`, `toString`, and `valueOf`.
+- [x] Number formatting: `toFixed`, `toPrecision`, `toExponential`, `toString`, `valueOf`, and `toLocaleString`, which
+      always formats as `en-US` (`"1,234.5"`) so output does not depend on the host.
 - [x] Number constants: `MAX_SAFE_INTEGER`, `MIN_SAFE_INTEGER`, `MAX_VALUE`, `MIN_VALUE`, `EPSILON`, `NaN`,
      `POSITIVE_INFINITY`, and `NEGATIVE_INFINITY`.
 - [x] Math constants: `PI`, `E`, `LN2`, `LN10`, `LOG2E`, `LOG10E`, `SQRT2`, and `SQRT1_2`.
@@ -346,7 +354,8 @@ ultimate source of truth. Upstream test262 files run verbatim from `test/test262
      use their epoch time) and reject opaque runtime references as data errors.
 - [x] Unknown static members on global namespaces and on `Number`/`String`/the coercion functions read as `undefined`
      for feature detection. Calling any undefined value reports a native-style `TypeError` naming the callee, for
-      example `Math.sum is not a function.` Unknown `Promise` statics keep their descriptive error.
+      example `Math.sum is not a function.` or `search(...).catch is not a function.` Unknown `Promise` statics keep
+      their descriptive error.
 - [x] `Math.sumPrecise` over finite collections and custom synchronous iterators/generators, rejecting non-number
      elements without coercion.
 - [x] Global coercing `isFinite` and `isNaN`; opaque runtime references reject as data errors, like `Number(...)`.
@@ -380,6 +389,8 @@ ultimate source of truth. Upstream test262 files run verbatim from `test/test262
      `TimeClip` behavior.
 - [x] `Date.prototype.toUTCString` and its `toGMTString` alias.
 - [x] `toDateString` and `toTimeString` in the host's local timezone.
+- [x] `toLocaleString`, `toLocaleDateString`, and `toLocaleTimeString` always format as `en-US` in UTC
+      (`"1/1/1970, 12:00:00 AM"`) so output does not depend on the host.
 - [x] Native one-argument Date coercion for supported values, including booleans, null, arrays, and plain objects.
 - [ ] Date setters and multi-argument construction coerce object arguments through `valueOf`/`toString` and surface
      their throws.
@@ -405,10 +416,11 @@ ultimate source of truth. Upstream test262 files run verbatim from `test/test262

 - [x] Static `Map.groupBy` over finite collections and custom synchronous iterators/generators, preserving key identity.
 - [x] `new Map()` from synchronous iterables of entries.
- [x] Map `get`, `set`, `has`, `delete`, `clear`, `size`, and `forEach`.
+- [x] Map `get`, `set`, `has`, `delete`, `clear`, `size`, `forEach`, `getOrInsert`, and `getOrInsertComputed`.
 - [x] `new Set()` from synchronous iterables.
 - [x] Set `add`, `has`, `delete`, `clear`, `size`, and `forEach`.
- [x] Materialized `keys`, `values`, and `entries` arrays for Map and Set.
+- [x] Live `keys`, `values`, `entries`, and `[Symbol.iterator]` iterators for Map and Set; a Set-like operand's `keys()`
+      may return a built-in iterator or an array.
 - [x] Spread, `for...of`, `Array.from`, and `Object.fromEntries` integration.
 - [x] Map and Set values serialize to `{}` at host/JSON boundaries.
 - [x] Set composition and relation methods: `union`, `intersection`, `difference`, `symmetricDifference`, `isSubsetOf`,
@@ -424,8 +436,9 @@ ultimate source of truth. Upstream test262 files run verbatim from `test/test262
 - [x] Writable URL fields except `origin`.
 - [x] `new URLSearchParams()` from query strings, data objects, synchronous iterables of pairs, and URLSearchParams.
 - [x] URLSearchParams `append`, `delete`, `get`, `getAll`, `has`, `set`, `sort`, `forEach`, `keys`, `values`,
-      `entries`, `toString`, and `size`.
- [x] URL values serialize to their href; URLSearchParams serialize to `{}`.
+      `entries`, `[Symbol.iterator]`, `toString`, and `size`.
+- [x] URL values are their href in `JSON.stringify` and at the host boundary. URLSearchParams are `{}` in
+      `JSON.stringify` and their query string at the host boundary.

 ## Uint8Array

@@ -437,7 +450,8 @@ with a hint to encode as text first (`TextDecoder`, `toBase64`, `toHex`).
 - [x] Index reads and writes with JS byte semantics: values wrap modulo 256, out-of-range writes are ignored, indexes
      cannot be deleted. `length` is a prototype accessor, so `Object.keys` lists only indexes.
 - [x] `at`, `slice`, `subarray` (a view on the same bytes), `set`, `fill`, `reverse`, `indexOf`, `lastIndexOf`,
-      `includes`, `join`, `toString`, `toBase64`, `toHex`, and materialized `keys`, `values`, and `entries` arrays.
+      `includes`, `join`, `toString`, `toBase64`, `toHex`, and live `keys`, `values`, `entries`, and `[Symbol.iterator]`
+      iterators.
 - [x] Spread, destructuring, `for...of`, `yield*`, `Array.from`, and `new Set(bytes)`. `Array.isArray` is false.
 - [x] String coercion joins with commas; `JSON.stringify` gives `{"0":1,...}`; `console.log` prints
      `Uint8Array(n) [...]`.
@@ -451,7 +465,13 @@ with a hint to encode as text first (`TextDecoder`, `toBase64`, `toHex`).
 - [x] `crypto.randomUUID()` and `crypto.getRandomValues(uint8Array)`.
 - [x] `TextEncoder` and `TextDecoder` for UTF-8 only: any other label is a `RangeError`. `TextDecoder` accepts the
      `fatal` and `ignoreBOM` options; `decode` takes a Uint8Array or nothing.
- [ ] `crypto.subtle`, `Blob`, and `TextDecoder` streaming or non-UTF-8 encodings.
+- [x] `new Headers()` from records, synchronous iterables of pairs, and Headers, wrapping the host's `Headers`: names
+      fold to lowercase, values are normalized and combined, and invalid names or values throw a `TypeError`.
+- [x] Headers `append`, `delete`, `get`, `getSetCookie`, `has`, `set`, `forEach`, `keys`, `values`, `entries`, and
+      `[Symbol.iterator]`; iteration is live and sorted by name, with `set-cookie` values kept apart.
+- [x] Headers serialize to a `{ name: value }` object in JSON, in results, and in tool arguments.
+- [ ] `Request`, `Response`, and `Blob`.
+- [ ] `crypto.subtle` and `TextDecoder` streaming or non-UTF-8 encodings.

 ## Extensions

@@ -461,9 +481,10 @@ Nothing is exposed unless a host provides it; extension calls are not tool calls
 - [x] Each global is a function, callable but not constructible, run with `this` undefined. A global that shadows
      a built-in or another extension throws at `make`.
 - [x] Every value crossing in either direction is converted, never shared: plain objects and arrays are copied,
-      `Date`, `RegExp`, `URL`, `URLSearchParams`, `Map`, `Set`, and `Uint8Array` become fresh copies with their
-      contents converted (a host `ArrayBuffer` comes in as a `Uint8Array`; other typed arrays cannot come out),
-      errors cross as errors with their name and message, and a `__proto__` key is dropped. Functions, generators,
+      `Date`, `RegExp`, `URL`, `URLSearchParams`, `Headers`, `Map`, `Set`, and `Uint8Array` become fresh copies with
+      their contents converted (a host `ArrayBuffer` comes in as a `Uint8Array`; other typed arrays cannot come out),
+      errors cross as errors with their name, message, `cause`, and own enumerable data, and a `__proto__` key is
+      dropped. Functions, generators,
      un-awaited promises, and symbols cannot be passed in; a class instance, a symbol, or a BigInt cannot come out.
 - [x] A host function inside a result becomes a program function whose calls cross the same way, so a result can
      carry methods (`res.json()`) whose host closures keep the host state. Diagnostics name it by its path
@@ -488,19 +509,21 @@ Nothing is exposed unless a host provides it; extension calls are not tool calls
 - [x] `AggregateError` with the `(errors, message?)` signature and an own `errors` array, constructed directly or by
      an all-rejected `Promise.any`; direct construction accepts custom synchronous iterators and generators.
 - [x] Error `name`/`message`, error inheritance through `instanceof`, and plain-data serialization. `message` is an own
-      non-enumerable property and `name` is inherited, as in JS, so `Object.keys(err)` is `[]` while the host still
-      receives `{ name, message }`. Errors have no `stack`; the diagnostic carries the source location instead.
+      non-enumerable property and `name` is inherited, as in JS, so `Object.keys(err)` is `[]` for a plain error. The
+      result boundary still emits `{ name, message, ...own enumerable }`, so a field such as `code` crosses. `cause` is
+      non-enumerable: an extension Error carries it, and this JSON form does not. Errors have no `stack`; the diagnostic
+      carries a 1-based line and column in the submitted source instead.
 - [x] `instanceof` against any constructor with a `prototype`, including every built-in and `Function`.
 - [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. The diagnostic names the rejected node type and attaches a short orientation to the supported
-      subset; this matrix is the full reference.
+- [x] Source locations on unsupported-syntax diagnostics. The diagnostic names the rejected node type and attaches a
+      short orientation to the supported subset; this matrix is the full reference.
 - [x] Model-visible host failure messages and underlying causes, including output-validation errors.
 - [x] Caught errors do not distinguish user throws, interpreter failures, and tool failures; a program sees one
-      Error-shaped value with `name` and `message` in `catch`, rejection handlers, and `Promise.allSettled` reasons.
-      This is deliberate: the program should handle a failure the same way regardless of where it originated.
+      Error-shaped value in `catch`, rejection handlers, and `Promise.allSettled` reasons. It always has `name` and
+      `message`, plus `cause` and own data when the failure carried them. This is deliberate: the program should
+      handle a failure the same way regardless of where it originated.
 - [x] Failures raised by the interpreter are `TypeError`s unless JavaScript names them otherwise (`RangeError`,
      `ReferenceError`, `SyntaxError`, `URIError`), so `e instanceof TypeError` and `e.constructor === TypeError`
      hold. Unsupported syntax reached at runtime is a `SyntaxError`; awaited tool failures stay plain `Error`.
@@ -1,7 +1,7 @@
 {
  "$schema": "https://json.schemastore.org/package.json",
  "name": "@opencode/codemode",
-  "version": "2.0.8",
+  "version": "2.0.11",
  "description": "Effect-native confined code execution over schema-described tools",
  "type": "module",
  "license": "MIT",
@@ -19,12 +19,6 @@
  "exports": {
    ".": "./src/index.ts"
  },
-  "imports": {
-    "#transpile": {
-      "workerd": "./src/interpreter/transpile.workerd.ts",
-      "default": "./src/interpreter/transpile.node.ts"
-    }
-  },
  "scripts": {
    "build": "bun run script/build.ts",
    "typecheck": "tsgo --noEmit",
@@ -32,8 +26,7 @@
  },
  "dependencies": {
    "acorn": "8.15.0",
-    "effect": "catalog:",
-    "typescript": "catalog:"
+    "effect": "catalog:"
  },
  "devDependencies": {
    "@tsconfig/bun": "catalog:",
@@ -15,7 +15,7 @@ const pkg = JSON.parse(originalText) as {
  name: string
  version: string
  exports: Record<string, string | { import: string; types: string }>
-  imports: Record<string, Record<string, string>>
+  imports?: Record<string, Record<string, string>>
 }
 const tarball = `${pkg.name.replace("@", "").replace("/", "-")}-${pkg.version}.tgz`
 const output = (value: string, types = false) =>
@@ -41,12 +41,14 @@ try {
      ]
    }),
  )
-  pkg.imports = Object.fromEntries(
-    Object.entries(pkg.imports).map(([key, conditions]) => [
-      key,
-      Object.fromEntries(Object.entries(conditions).map(([condition, value]) => [condition, output(value)])),
-    ]),
-  )
+  if (pkg.imports) {
+    pkg.imports = Object.fromEntries(
+      Object.entries(pkg.imports).map(([key, conditions]) => [
+        key,
+        Object.fromEntries(Object.entries(conditions).map(([condition, value]) => [condition, output(value)])),
+      ]),
+    )
+  }
  await Bun.write("package.json", JSON.stringify(pkg, null, 2) + "\n")
  await rm(tarball, { force: true })
  await $`bun pm pack`
@@ -17,6 +17,7 @@ import {
  record,
  SetObj,
  URLSearchParamsObj,
+  HeadersObj,
 } from "./interpreter/objects.js"
 import { typeofValue } from "./interpreter/references.js"

@@ -69,6 +70,7 @@ const walk = <R>(
        )
      }
      if (boundary && value instanceof URLSearchParamsObj) return value.params.toString()
+      if (value instanceof HeadersObj) return Object.fromEntries(value.headers)
      const target = boundary && value instanceof SetObj ? new Arr(ctx.builtins.Array, [...value.set]) : value
      if (stack.has(target)) throw typeError("Converting circular structure to JSON.")
      stack.add(target)
@@ -1,6 +1,7 @@
 import { Effect, Exit } from "effect"
 import { coerceToNumber, coerceToString } from "../stdlib/value.js"
 import type { Interpreter } from "./interpreter.js"
+import { primitivePrototype } from "./intrinsics.js"
 import { typeError } from "./model.js"
 import { Callable, get, Native, DateObj, Obj } from "./objects.js"
 import { typeofValue } from "./references.js"
@@ -43,6 +44,13 @@ export const toPrimitive = <R>(
  })
 }

+/** Invoke(value, name): calls the method the value would find through its prototype. */
+export const invoke = <R>(ctx: Interpreter<R>, value: unknown, name: string, label: string) => {
+  const target = value instanceof Obj ? value : primitivePrototype(ctx.builtins, value)
+  if (target === undefined) throw typeError(`${label} called on null or undefined.`)
+  return ctx.call(get(target, name), value, [])
+}
+
 export const toPrimitiveString = <R>(ctx: Interpreter<R>, value: unknown) =>
  Effect.map(toPrimitive(ctx, value, "string"), coerceToString)

@@ -168,6 +168,7 @@ export const errorGlobal = <R>(type: ErrorType, ctx: Interpreter<R>) => {
    methods(builtins, prototype, [
      ["toString", 0, (thisValue) => errorToString(receiver(Obj, thisValue, "Error.prototype.toString"))],
    ])
+    methods(builtins, ctor, [["isError", 1, (_, args) => args[0] instanceof ErrorObj]])
  }
  return ctor
 }
@@ -1,14 +1,10 @@
 import { parse, type Program } from "acorn"
 import { Cause, Effect, Scope } from "effect"
-// #transpile: conditional import — full typescript on node/bun, an identity
-// pass-through on workerd (the compiler is ~11 MiB and can't init there).
-import { transpile } from "#transpile"
 import type { DataValue, Diagnostic, ResolvedExecutionLimits, Result } from "../codemode.js"
 import { toBoundary } from "../data.js"
 import { ToolRuntime } from "../tool-runtime.js"
 import { normalizeError } from "./errors.js"
 import { createBuiltins } from "./intrinsics.js"
-import { PendingThrow } from "./model.js"
 import { Pending } from "./promises.js"
 import { Interpreter } from "./interpreter.js"

@@ -110,16 +106,7 @@ export const executeProgram = <R>(
 }

 const parseProgram = (code: string): Program => {
-  const transpiled = transpile(`async function __codemode__() {\n${code}\n}`)
-
-  if (transpiled.error !== undefined) {
-    throw new PendingThrow("SyntaxError", `Failed to parse TypeScript: ${transpiled.error}`, undefined, "ParseError")
-  }
-
-  const bodyStart = transpiled.outputText.indexOf("{") + 1
-  const bodyEnd = transpiled.outputText.lastIndexOf("}")
-  const executableCode = transpiled.outputText.slice(bodyStart, bodyEnd)
-  return parse(executableCode, {
+  return parse(code, {
    ecmaVersion: "latest",
    sourceType: "script",
    allowReturnOutsideFunction: true,
@@ -20,6 +20,7 @@ import {
  DateObj,
  ErrorObj,
  GeneratorObj,
+  IteratorObj,
  MapObj,
  Obj,
  PromiseObj,
@@ -27,6 +28,7 @@ import {
  SetObj,
  URLObj,
  URLSearchParamsObj,
+  HeadersObj,
 } from "./objects.js"
 import { describeValue } from "./references.js"

@@ -52,6 +54,7 @@ export const extensionGlobals = <R>(
    if (value instanceof RegExpObj) return new RegExp(value.regex.source, value.regex.flags)
    if (value instanceof URLObj) return new URL(value.url.href)
    if (value instanceof URLSearchParamsObj) return new URLSearchParams(value.params)
+    if (value instanceof HeadersObj) return new Headers(value.headers)
    const next = (item: unknown) => toHost(item, label, depth + 1, seen)
    if (value instanceof MapObj) return new Map([...value.map].map(([key, item]) => [next(key), next(item)]))
    if (value instanceof SetObj) return new Set([...value.set].map(next))
@@ -59,6 +62,7 @@ export const extensionGlobals = <R>(
      !(value instanceof Obj) ||
      value instanceof Callable ||
      value instanceof GeneratorObj ||
+      value instanceof IteratorObj ||
      value instanceof PromiseObj
    ) {
      throw typeError(`${label} contains ${describeValue(value)}, which cannot be passed to an extension.`)
@@ -125,6 +129,7 @@ export const extensionGlobals = <R>(
      if (value instanceof URLSearchParams) {
        return new URLSearchParamsObj(builtins.URLSearchParams, new URLSearchParams(value))
      }
+      if (value instanceof Headers) return new HeadersObj(builtins.Headers, new Headers(value))
      if (value instanceof Map) {
        const wrapped = new MapObj(builtins.Map)
        for (const [key, item] of value) wrapped.map.set(next(key, label), next(item, label))
@@ -11,6 +11,8 @@ import { objectGlobal } from "../stdlib/object.js"
 import { regexpGlobal } from "../stdlib/regexp.js"
 import { stringGlobal } from "../stdlib/string.js"
 import { uriGlobal, urlGlobal, urlSearchParamsGlobal } from "../stdlib/url.js"
+import { headersGlobal } from "../stdlib/headers.js"
+import { iteratorGlobals } from "../stdlib/iterator.js"
 import { coercion } from "../stdlib/value.js"
 import { base64Global, cryptoGlobal } from "../stdlib/web.js"
 import { ToolReference } from "../tool-runtime.js"
@@ -80,6 +82,7 @@ const table: Record<string, Factory> = {
  Set: (ctx) => setGlobal(ctx),
  URL: (ctx) => urlGlobal(ctx),
  URLSearchParams: (ctx) => urlSearchParamsGlobal(ctx),
+  Headers: (ctx) => headersGlobal(ctx),
  Uint8Array: (ctx) => uint8ArrayGlobal(ctx),
  TextEncoder: (ctx) => textEncoderGlobal(ctx),
  TextDecoder: (ctx) => textDecoderGlobal(ctx),
@@ -99,5 +102,6 @@ export const globalNames: ReadonlySet<string> = new Set(Object.keys(table))
 /** The immutable global bindings of every program, in declaration order. */
 export const globals = <R>(ctx: Interpreter<R>): ReadonlyArray<readonly [string, unknown]> => {
  generatorGlobals(ctx)
+  iteratorGlobals(ctx)
  return Object.entries(table).map(([name, factory]) => [name, factory(ctx)] as const)
 }
@@ -62,7 +62,7 @@ import {
 } from "./model.js"
 import { checkStringLength } from "./limits.js"
 import { locate, materialize } from "./errors.js"
-import type { Builtins } from "./intrinsics.js"
+import { type Builtins, primitivePrototype } from "./intrinsics.js"
 import { globals } from "./globals.js"
 import {
  assign,
@@ -79,11 +79,13 @@ import {
  DateObj,
  Fn,
  GeneratorObj,
+  IteratorObj,
  MapObj,
  Obj,
  PromiseObj,
  SetObj,
  URLSearchParamsObj,
+  HeadersObj,
  record,
  remove,
  set,
@@ -108,20 +110,25 @@ const loopExit = (result: StatementResult, labels: ReadonlySet<string> | undefin
  return undefined
 }

-const calleeDescription = (callee: Expression | Super | undefined): string => {
-  if (callee?.type === "Identifier") return callee.name
-  if (callee?.type === "MemberExpression") {
-    const object = callee.object
-    const property = callee.property
-    const key =
-      !callee.computed && property.type === "Identifier"
-        ? property.name
-        : property.type === "Literal" && typeof property.value === "string"
-          ? property.value
-          : undefined
-    if (object.type === "Identifier" && key !== undefined) return `${object.name}.${key}`
+// Native engines name the callee (`search(...).catch is not a function`), including call chains. Returns
+// undefined when a link cannot be named, so a chain is either named completely or not at all.
+const calleeDescription = (node: Expression | Super | undefined): string | undefined => {
+  if (node?.type === "Identifier") return node.name
+  if (node?.type === "CallExpression") {
+    const target = calleeDescription(node.callee)
+    return target === undefined ? undefined : `${target}(...)`
  }
-  return "The called value"
+  if (node?.type !== "MemberExpression") return undefined
+  const property = node.property
+  const key =
+    !node.computed && property.type === "Identifier"
+      ? property.name
+      : property.type === "Literal" && typeof property.value === "string"
+        ? property.value
+        : undefined
+  if (key === undefined) return undefined
+  const object = calleeDescription(node.object)
+  return object === undefined ? undefined : `${object}.${key}`
 }

 // OrdinaryHasInstance: walk the left operand's chain looking for the constructor's `prototype`.
@@ -649,11 +656,11 @@ class Frame<R> {
      if (declared?.lexical) self.predeclarePattern(declared.pattern, declared.mutable, left)
      const right = yield* self.evaluateExpression(node.right)

-      const iterator = yield* self.customIterator(right, node, awaiting)
-      const cursor = iterator === undefined ? yield* self.iterate(right, node) : undefined
+      const cursor = self.hostCursor(right)
+      const iterator = cursor === undefined ? yield* self.customIterator(right, node, awaiting) : undefined
      if (iterator === undefined && cursor === undefined) {
        throw invalidData(
-          `${awaiting ? "for await...of" : "for...of"} requires an array, string, Map, Set, or URLSearchParams, or custom iterator value.`,
+          `${awaiting ? "for await...of" : "for...of"} requires an array, string, Map, Set, URLSearchParams, or Headers, or custom iterator value.`,
          node,
        )
      }
@@ -745,6 +752,20 @@ class Frame<R> {
  }

  iterate(value: unknown, node?: AstNode) {
+    const cursor = this.hostCursor(value)
+    if (cursor !== undefined) return Effect.succeed(cursor)
+    const self = this
+    return Effect.map(this.customIterator(value, node, false), (iterator) =>
+      iterator === undefined
+        ? undefined
+        : {
+            next: self.nextIteratorResult(iterator, node, false),
+            close: Effect.suspend(() => self.closeIterator(iterator, node, false)),
+          },
+    )
+  }
+
+  private hostCursor(value: unknown) {
    const iterator =
      value instanceof Arr
        ? value.items[Symbol.iterator]()
@@ -756,31 +777,25 @@ class Frame<R> {
              ? value.set.values()
              : value instanceof URLSearchParamsObj
                ? value.params.entries()
-                : value instanceof Bytes
-                  ? value.bytes.values()
-                  : undefined
-    if (iterator !== undefined) {
-      const proto = this.ctx.builtins.Array
-      return Effect.succeed({
-        next: Effect.sync(() => {
-          const step = iterator.next()
-          return {
-            done: Boolean(step.done),
-            value: Array.isArray(step.value) ? new Arr(proto, step.value) : step.value,
-          }
-        }),
-        close: Effect.void,
-      })
+                : value instanceof HeadersObj
+                  ? value.headers.entries()
+                  : value instanceof Bytes
+                    ? value.bytes.values()
+                    : value instanceof IteratorObj
+                      ? value.iterator
+                      : undefined
+    if (iterator === undefined) return undefined
+    const proto = this.ctx.builtins.Array
+    return {
+      next: Effect.sync(() => {
+        const step = iterator.next()
+        return {
+          done: Boolean(step.done),
+          value: Array.isArray(step.value) ? new Arr(proto, step.value) : step.value,
+        }
+      }),
+      close: Effect.void,
    }
-    const self = this
-    return Effect.map(this.customIterator(value, node, false), (iterator) =>
-      iterator === undefined
-        ? undefined
-        : {
-            next: self.nextIteratorResult(iterator, node, false),
-            close: Effect.suspend(() => self.closeIterator(iterator, node, false)),
-          },
-    )
  }

  private customIterator(value: unknown, node: AstNode | undefined, allowAsync = true) {
@@ -1295,7 +1310,7 @@ class Frame<R> {
        // `new` itself is supported, so a non-constructible callee is a TypeError like JS rather than
        // unsupported syntax. Built-ins like Number are real constructors in JS, so do not claim
        // otherwise; say `new` is unsupported for them and point at the plain call.
-        const name = calleeDescription(node.callee)
+        const name = calleeDescription(node.callee) ?? "The called value"
        const message =
          callee instanceof Fn
            ? `${name} cannot be constructed: user-defined constructors and classes are not supported. Call it as a function that returns a plain object instead.`
@@ -1598,7 +1613,7 @@ class Frame<R> {
      if (callable instanceof Native) {
        return yield* self.native(() => (callable as Native<R>).call(thisValue, args), node)
      }
-      throw typeError(`${calleeDescription(callee)} is not a function.`, callee ?? node)
+      throw typeError(`${calleeDescription(callee) ?? "The called value"} is not a function.`, callee ?? node)
    })
  }

@@ -1848,6 +1863,7 @@ class Frame<R> {
        value instanceof MapObj ||
        value instanceof SetObj ||
        value instanceof URLSearchParamsObj ||
+        value instanceof HeadersObj ||
        value instanceof Bytes
      ) {
        const cursor = yield* self.iterate(value, node)
@@ -2060,16 +2076,14 @@ class Frame<R> {

      if (objectValue instanceof Obj) return { target: objectValue, key, receiver: objectValue }

-      // Primitives read through their wrapper prototype without being boxed; strings own length and indexes.
-      const builtins = self.ctx.builtins
+      // Strings own length and indexes; every other primitive property reads through the wrapper prototype.
      if (typeof objectValue === "string") {
        if (key === "length") return { value: objectValue.length }
        const index = typeof key === "symbol" ? undefined : parseArrayIndex(key)
        if (index !== undefined) return { value: objectValue[index] }
-        return { target: builtins.String, key, receiver: objectValue }
      }
-      if (typeof objectValue === "number") return { target: builtins.Number, key, receiver: objectValue }
-      if (typeof objectValue === "boolean") return { target: builtins.Boolean, key, receiver: objectValue }
+      const proto = primitivePrototype(self.ctx.builtins, objectValue)
+      if (proto !== undefined) return { target: proto, key, receiver: objectValue }

      if (objectValue === null || objectValue === undefined) {
        throw typeError(`Cannot read properties of ${objectValue} (reading '${String(key)}').`, objectNode)
@@ -29,6 +29,7 @@ const builtins = [
  "Set",
  "URL",
  "URLSearchParams",
+  "Headers",
  "Uint8Array",
  "TextEncoder",
  "TextDecoder",
@@ -51,6 +52,14 @@ export const createErrorValue = (prototype: Obj, message: string | undefined): E
  return value
 }

+/** The prototype a primitive reads its methods from without being boxed; none for null, undefined, and symbols. */
+export const primitivePrototype = (builtins: Builtins, value: unknown): Obj | undefined => {
+  if (typeof value === "string") return builtins.String
+  if (typeof value === "number") return builtins.Number
+  if (typeof value === "boolean") return builtins.Boolean
+  return undefined
+}
+
 export const createBuiltins = (): Builtins => {
  const object = new Obj(null)
  // Function.prototype is itself callable and returns undefined.
@@ -80,6 +89,7 @@ export const createBuiltins = (): Builtins => {
    Set: plain(),
    URL: plain(),
    URLSearchParams: plain(),
+    Headers: plain(),
    Uint8Array: plain(),
    TextEncoder: plain(),
    TextDecoder: plain(),
@@ -86,9 +86,10 @@ export const unsupportedSyntax = (kind: string, node: AstNode): PendingThrow =>
 export const isRecord = (value: unknown): value is Record<string, unknown> =>
  typeof value === "object" && value !== null

+// Acorn lines are 1-based and its columns are 0-based. Diagnostics use 1-based columns of the submitted source.
 export const sourceLocation = (node: AstNode): { readonly line: number; readonly column: number } => ({
-  line: Math.max(1, (node.loc?.start.line ?? 2) - 1),
-  column: Math.max(1, (node.loc?.start.column ?? 4) - 3),
+  line: node.loc?.start.line ?? 1,
+  column: (node.loc?.start.column ?? 0) + 1,
 })

 export const formatLocation = (node?: AstNode): string => {
@@ -122,6 +122,16 @@ export class GeneratorObj extends Obj {
  }
 }

+/** A built-in collection iterator: live over the host collection, yielding program values. */
+export class IteratorObj extends Obj {
+  constructor(
+    proto: Obj,
+    readonly iterator: IteratorObject<unknown>,
+  ) {
+    super(proto)
+  }
+}
+
 export class DateObj extends Obj {
  constructor(
    proto: Obj,
@@ -156,6 +166,15 @@ export class URLSearchParamsObj extends Obj {
  }
 }

+export class HeadersObj extends Obj {
+  constructor(
+    proto: Obj,
+    readonly headers: Headers,
+  ) {
+    super(proto)
+  }
+}
+
 export class URLObj extends Obj {
  readonly searchParams: URLSearchParamsObj
  constructor(
@@ -181,13 +200,14 @@ export class Bytes extends Obj {
 /** Built-in objects that wrap a host value; data-like, but never plain data. */
 export const isWrapper = (
  value: unknown,
-): value is DateObj | RegExpObj | MapObj | SetObj | URLObj | URLSearchParamsObj | Bytes =>
+): value is DateObj | RegExpObj | MapObj | SetObj | URLObj | URLSearchParamsObj | HeadersObj | Bytes =>
  value instanceof DateObj ||
  value instanceof RegExpObj ||
  value instanceof MapObj ||
  value instanceof SetObj ||
  value instanceof URLObj ||
  value instanceof URLSearchParamsObj ||
+  value instanceof HeadersObj ||
  value instanceof Bytes

 const MAX_ARRAY_INDEX = 4_294_967_295
@@ -9,6 +9,7 @@ import {
  Bytes,
  DateObj,
  GeneratorObj,
+  IteratorObj,
  MapObj,
  Obj,
  PromiseObj,
@@ -16,12 +17,14 @@ import {
  SetObj,
  URLObj,
  URLSearchParamsObj,
+  HeadersObj,
 } from "./objects.js"

 /** Values that cannot cross the data boundary. */
 export const isRuntimeReference = (value: unknown): boolean =>
  value instanceof Callable ||
  value instanceof GeneratorObj ||
+  value instanceof IteratorObj ||
  value instanceof ToolReference ||
  value instanceof PromiseObj ||
  isWrapper(value)
@@ -85,8 +88,10 @@ export const describeValue = (value: unknown): string => {
  if (value instanceof SetObj) return "a Set"
  if (value instanceof URLObj) return "a URL"
  if (value instanceof URLSearchParamsObj) return "a URLSearchParams"
+  if (value instanceof HeadersObj) return "a Headers"
  if (value instanceof Bytes) return "a Uint8Array"
  if (value instanceof GeneratorObj) return "a generator"
+  if (value instanceof IteratorObj) return "an iterator"
  if (isRuntimeReference(value)) return "a function"
  if (typeof value === "object") return "a data object"
  return `a ${typeof value}`
@@ -1,25 +0,0 @@
-import { DiagnosticCategory, ModuleKind, ScriptTarget, flattenDiagnosticMessageText, transpileModule } from "typescript"
-
-export interface TranspileResult {
-  readonly outputText: string
-  readonly error?: string
-}
-
-// Full TypeScript transpilation on node/bun runtimes.
-export const transpile = (source: string): TranspileResult => {
-  const transpiled = transpileModule(source, {
-    reportDiagnostics: true,
-    compilerOptions: {
-      target: ScriptTarget.ESNext,
-      module: ModuleKind.ESNext,
-    },
-  })
-  const diagnostic = transpiled.diagnostics?.find((item) => item.category === DiagnosticCategory.Error)
-  if (diagnostic) {
-    return {
-      outputText: transpiled.outputText,
-      error: flattenDiagnosticMessageText(diagnostic.messageText, "\n"),
-    }
-  }
-  return { outputText: transpiled.outputText }
-}
@@ -1,11 +0,0 @@
-export interface TranspileResult {
-  readonly outputText: string
-  readonly error?: string
-}
-
-// workerd profile: the typescript compiler is ~11 MiB and probes node
-// internals at module init, so codemode programs are passed through
-// untranspiled. Plain-JS programs (the overwhelmingly common case) parse
-// fine downstream via acorn; TypeScript-only syntax surfaces as a parse
-// error from the interpreter instead of a transpile diagnostic.
-export const transpile = (source: string): TranspileResult => ({ outputText: source })
@@ -1,10 +1,10 @@
 import { Effect } from "effect"
 import { constructor, type Method, methods, prototypeFrom, receiver } from "../interpreter/native.js"
 import { checkArrayLength, checkStringLength, MAX_ARRAY_LENGTH } from "../interpreter/limits.js"
-import { invalidData, rangeError, typeError } from "../interpreter/model.js"
-import { get, Arr, GeneratorObj, Obj } from "../interpreter/objects.js"
+import { invalidData, IteratorSymbol, rangeError, typeError } from "../interpreter/model.js"
+import { define, get, hidden, Arr, GeneratorObj, IteratorObj, Obj } from "../interpreter/objects.js"
 import { describeValue, rejectCircularInsertion } from "../interpreter/references.js"
-import { applyCollectionCallback, preserveConsumerError } from "../interpreter/callback.js"
+import { applyCollectionCallback, invoke, preserveConsumerError } from "../interpreter/callback.js"
 import type { Interpreter } from "../interpreter/interpreter.js"
 import { compareText } from "../tool-runtime.js"
 import { coerceToNumber, coerceToString } from "./value.js"
@@ -340,13 +340,31 @@ export const arrayGlobal = <R>(ctx: Interpreter<R>) => {
        return target
      },
    ],
-    ["keys", 0, (thisValue) => wrap(Array.from(self(thisValue, "keys").items.keys()))],
-    ["values", 0, (thisValue) => wrap([...self(thisValue, "values").items])],
+    [
+      "toLocaleString",
+      0,
+      (thisValue) =>
+        Effect.map(
+          Effect.forEach(self(thisValue, "toLocaleString").items, (item) =>
+            item === null || item === undefined
+              ? Effect.succeed("")
+              : Effect.map(invoke(ctx, item, "toLocaleString", "Array.prototype.toLocaleString"), coerceToString),
+          ),
+          (parts) => parts.join(","),
+        ),
+    ],
+    ["keys", 0, (thisValue) => new IteratorObj(builtins.Iterator, self(thisValue, "keys").items.keys())],
+    ["values", 0, (thisValue) => new IteratorObj(builtins.Iterator, self(thisValue, "values").items.values())],
    [
      "entries",
      0,
      (thisValue) =>
-        wrap(Array.from(self(thisValue, "entries").items.entries(), ([index, item]) => wrap([index, item]))),
+        new IteratorObj(
+          builtins.Iterator,
+          self(thisValue, "entries")
+            .items.entries()
+            .map(([index, item]) => wrap([index, item])),
+        ),
    ],
    iterate("map", 1, (target, receiver, apply) =>
      Effect.gen(function* () {
@@ -490,5 +508,6 @@ export const arrayGlobal = <R>(ctx: Interpreter<R>) => {
      }),
    ),
  ])
+  define(proto, IteratorSymbol, get(proto, "values"), hidden)
  return array
 }
@@ -1,8 +1,8 @@
 import { Effect } from "effect"
 import { checkArrayLength, checkStringLength } from "../interpreter/limits.js"
 import { constructor, methods, prototypeFrom, receiver, requiresNew } from "../interpreter/native.js"
-import { rangeError, syntaxError, typeError } from "../interpreter/model.js"
-import { defineAccessor, get, Arr, Bytes, Obj } from "../interpreter/objects.js"
+import { IteratorSymbol, rangeError, syntaxError, typeError } from "../interpreter/model.js"
+import { define, defineAccessor, get, hidden, Arr, Bytes, IteratorObj, Obj } from "../interpreter/objects.js"
 import { describeValue } from "../interpreter/references.js"
 import type { Interpreter } from "../interpreter/interpreter.js"
 import { coerceToNumber, coerceToString } from "./value.js"
@@ -173,15 +173,21 @@ export const uint8ArrayGlobal = <R>(ctx: Interpreter<R>) => {
    ["toString", 0, (thisValue) => self(thisValue, "toString").bytes.join(",")],
    ["toBase64", 0, (thisValue) => self(thisValue, "toBase64").bytes.toBase64()],
    ["toHex", 0, (thisValue) => self(thisValue, "toHex").bytes.toHex()],
-    ["keys", 0, (thisValue) => wrapAll(Array.from(self(thisValue, "keys").bytes.keys()))],
-    ["values", 0, (thisValue) => wrapAll(Array.from(self(thisValue, "values").bytes.values()))],
+    ["keys", 0, (thisValue) => new IteratorObj(builtins.Iterator, self(thisValue, "keys").bytes.keys())],
+    ["values", 0, (thisValue) => new IteratorObj(builtins.Iterator, self(thisValue, "values").bytes.values())],
    [
      "entries",
      0,
      (thisValue) =>
-        wrapAll(Array.from(self(thisValue, "entries").bytes.entries(), ([index, byte]) => wrapAll([index, byte]))),
+        new IteratorObj(
+          builtins.Iterator,
+          self(thisValue, "entries")
+            .bytes.entries()
+            .map(([index, byte]) => wrapAll([index, byte])),
+        ),
    ],
  ])
+  define(proto, IteratorSymbol, get(proto, "values"), hidden)
  return uint8Array
 }

@@ -1,6 +1,6 @@
 import { Effect } from "effect"
 import { constructor, fn, type Method, methods, prototypeFrom, receiver, requiresNew } from "../interpreter/native.js"
-import { invalidData, typeError } from "../interpreter/model.js"
+import { invalidData, IteratorSymbol, typeError } from "../interpreter/model.js"
 import {
  define,
  defineAccessor,
@@ -9,6 +9,7 @@ import {
  hidden,
  isWrapper,
  Arr,
+  IteratorObj,
  MapObj,
  Obj,
  PromiseObj,
@@ -144,6 +145,29 @@ export const mapGlobal = <R>(ctx: Interpreter<R>) => {
        return target
      },
    ],
+    [
+      "getOrInsert",
+      2,
+      (thisValue, args) => {
+        const target = self(thisValue, "getOrInsert").map
+        if (!target.has(args[0])) target.set(args[0], args[1])
+        return target.get(args[0])
+      },
+    ],
+    [
+      "getOrInsertComputed",
+      2,
+      (thisValue, args) => {
+        const target = self(thisValue, "getOrInsertComputed").map
+        const apply = applyCollectionCallback(ctx, args[1], "Map.getOrInsertComputed")
+        if (target.has(args[0])) return target.get(args[0])
+        // The callback sees the stored key (-0 is +0) and its result wins over anything it inserted itself.
+        return Effect.map(apply([args[0] === 0 ? 0 : args[0]]), (value) => {
+          target.set(args[0], value)
+          return value
+        })
+      },
+    ],
    ["delete", 1, (thisValue, args) => self(thisValue, "delete").map.delete(args[0])],
    [
      "clear",
@@ -153,12 +177,18 @@ export const mapGlobal = <R>(ctx: Interpreter<R>) => {
        return undefined
      },
    ],
-    ["keys", 0, (thisValue) => wrap(Array.from(self(thisValue, "keys").map.keys()))],
-    ["values", 0, (thisValue) => wrap(Array.from(self(thisValue, "values").map.values()))],
+    ["keys", 0, (thisValue) => new IteratorObj(builtins.Iterator, self(thisValue, "keys").map.keys())],
+    ["values", 0, (thisValue) => new IteratorObj(builtins.Iterator, self(thisValue, "values").map.values())],
    [
      "entries",
      0,
-      (thisValue) => wrap(Array.from(self(thisValue, "entries").map.entries(), ([key, item]) => wrap([key, item]))),
+      (thisValue) =>
+        new IteratorObj(
+          builtins.Iterator,
+          self(thisValue, "entries")
+            .map.entries()
+            .map(([key, item]) => wrap([key, item])),
+        ),
    ],
    [
      "forEach",
@@ -173,6 +203,7 @@ export const mapGlobal = <R>(ctx: Interpreter<R>) => {
      },
    ],
  ])
+  define(proto, IteratorSymbol, get(proto, "entries"), hidden)
  return map
 }

@@ -218,7 +249,8 @@ const loadSetRecord = <R>(
      size: Math.max(Math.trunc(size), 0),
      has: (item: unknown) => Effect.map(ctx.call(has, source, [item]), Boolean),
      keys: () =>
-        Effect.flatMap(ctx.call(keys, source, []), (result) => {
+        Effect.flatMap(ctx.call(keys, source, []), (result): Effect.Effect<Iterable<unknown>> => {
+          if (result instanceof IteratorObj) return Effect.succeed(result.iterator)
          if (result instanceof Arr) return Effect.succeed(result.items)
          throw typeError(`Set.${name} expected 'keys' to return an iterator.`)
        }),
@@ -338,12 +370,18 @@ export const setGlobal = <R>(ctx: Interpreter<R>) => {
        return undefined
      },
    ],
-    ["keys", 0, (thisValue) => wrap(Array.from(self(thisValue, "keys").set.values()))],
-    ["values", 0, (thisValue) => wrap(Array.from(self(thisValue, "values").set.values()))],
+    ["keys", 0, (thisValue) => new IteratorObj(builtins.Iterator, self(thisValue, "keys").set.values())],
+    ["values", 0, (thisValue) => new IteratorObj(builtins.Iterator, self(thisValue, "values").set.values())],
    [
      "entries",
      0,
-      (thisValue) => wrap(Array.from(self(thisValue, "entries").set.values(), (item) => wrap([item, item]))),
+      (thisValue) =>
+        new IteratorObj(
+          builtins.Iterator,
+          self(thisValue, "entries")
+            .set.values()
+            .map((item) => wrap([item, item])),
+        ),
    ],
    [
      "forEach",
@@ -365,5 +403,6 @@ export const setGlobal = <R>(ctx: Interpreter<R>) => {
    operation("isSupersetOf"),
    operation("isDisjointFrom"),
  ])
+  define(proto, IteratorSymbol, get(proto, "values"), hidden)
  return set
 }
@@ -12,6 +12,7 @@ import {
  SetObj,
  URLObj,
  URLSearchParamsObj,
+  HeadersObj,
 } from "../interpreter/objects.js"
 import { containsOpaqueReference, isRuntimeReference } from "../interpreter/references.js"
 import type { Interpreter } from "../interpreter/interpreter.js"
@@ -66,6 +67,7 @@ const formatConsoleValue = (value: unknown, seen: Set<object>, depth: number): s
  if (value instanceof RegExpObj) return coerceToString(value)
  if (value instanceof URLObj) return coerceToString(value)
  if (value instanceof URLSearchParamsObj) return coerceToString(value)
+  if (value instanceof HeadersObj) return `Headers ${JSON.stringify(Object.fromEntries(value.headers))}`
  if (value instanceof Bytes) return `Uint8Array(${value.bytes.length}) [${value.bytes.join(",")}]`
  if (depth > MAX_CONSOLE_DEPTH) return "..."
  if (seen.has(value)) return "[Circular]"
@@ -105,6 +105,13 @@ export const dateGlobal = <R>(ctx: Interpreter<R>) => {
    ["toTimeString", 0, (thisValue) => new Date(self(thisValue, "toTimeString").time).toTimeString()],
    ["toUTCString", 0, (thisValue) => new Date(self(thisValue, "toUTCString").time).toUTCString()],
    ["toGMTString", 0, (thisValue) => new Date(self(thisValue, "toGMTString").time).toUTCString()],
+    ...(["toLocaleString", "toLocaleDateString", "toLocaleTimeString"] as const).map(
+      (name): Method => [
+        name,
+        0,
+        (thisValue) => new Date(self(thisValue, name).time)[name]("en-US", { timeZone: "UTC" }),
+      ],
+    ),
    ...getters.map((name): Method => [name, 0, (thisValue) => new Date(self(thisValue, name).time)[name]()]),
    ...setters.map(
      ([name, length]): Method => [
@@ -0,0 +1,132 @@
+import { Effect } from "effect"
+import { constructor, methods, prototypeFrom, receiver, requiresNew } from "../interpreter/native.js"
+import { IteratorSymbol, typeError } from "../interpreter/model.js"
+import { define, entries, get, hidden, Arr, HeadersObj, IteratorObj, Obj } from "../interpreter/objects.js"
+import { applyCollectionCallback } from "../interpreter/callback.js"
+import { isRuntimeReference } from "../interpreter/references.js"
+import type { Interpreter } from "../interpreter/interpreter.js"
+import { coerceToString } from "./value.js"
+import { readPairs } from "./url.js"
+
+// The host validates header names and values and throws its own TypeError; the program gets one of its own.
+const attempt = <T>(run: () => T): T => {
+  try {
+    return run()
+  } catch (error) {
+    throw typeError(error instanceof Error ? error.message : String(error))
+  }
+}
+
+const constructHeaders = <R>(ctx: Interpreter<R>, init: unknown, proto: Obj): Effect.Effect<HeadersObj, unknown, R> => {
+  const wrap = (headers: Headers) => new HeadersObj(proto, headers)
+  if (init === undefined) return Effect.succeed(wrap(new Headers()))
+  return Effect.gen(function* () {
+    const pairs = init instanceof Obj ? yield* readPairs(ctx, init, "new Headers(...)") : undefined
+    if (pairs !== undefined) return wrap(attempt(() => new Headers(pairs)))
+    if (!(init instanceof Obj) || isRuntimeReference(init)) {
+      throw typeError("new Headers(...) expects a record of names to values, iterable [name, value] pairs, or Headers.")
+    }
+    return wrap(
+      attempt(() => new Headers(Object.fromEntries(entries(init).map(([key, value]) => [key, coerceToString(value)])))),
+    )
+  })
+}
+
+export const headersGlobal = <R>(ctx: Interpreter<R>) => {
+  const builtins = ctx.builtins
+  const proto = builtins.Headers
+  const headers = constructor<R>(builtins, proto, {
+    name: "Headers",
+    call: requiresNew("Headers"),
+    construct: (args, newTarget) => constructHeaders(ctx, args[0], prototypeFrom(newTarget, proto)),
+  })
+  const self = (thisValue: unknown, name: string) => receiver(HeadersObj, thisValue, `Headers.prototype.${name}`)
+  const wrap = (items: Array<unknown>) => new Arr(builtins.Array, items)
+  const arg = (args: Array<unknown>, index: number): string => coerceToString(args[index])
+  const requireArgs = (name: string, args: Array<unknown>, count: number): void => {
+    if (args.length < count) throw typeError(`Headers.${name} requires ${count} argument${count === 1 ? "" : "s"}.`)
+  }
+  methods(builtins, proto, [
+    [
+      "append",
+      2,
+      (thisValue, args) => {
+        requireArgs("append", args, 2)
+        const target = self(thisValue, "append").headers
+        return attempt(() => target.append(arg(args, 0), arg(args, 1)))
+      },
+    ],
+    [
+      "delete",
+      1,
+      (thisValue, args) => {
+        requireArgs("delete", args, 1)
+        const target = self(thisValue, "delete").headers
+        return attempt(() => target.delete(arg(args, 0)))
+      },
+    ],
+    [
+      "get",
+      1,
+      (thisValue, args) => {
+        requireArgs("get", args, 1)
+        const target = self(thisValue, "get").headers
+        return attempt(() => target.get(arg(args, 0)))
+      },
+    ],
+    ["getSetCookie", 0, (thisValue) => wrap(self(thisValue, "getSetCookie").headers.getSetCookie())],
+    [
+      "has",
+      1,
+      (thisValue, args) => {
+        requireArgs("has", args, 1)
+        const target = self(thisValue, "has").headers
+        return attempt(() => target.has(arg(args, 0)))
+      },
+    ],
+    [
+      "set",
+      2,
+      (thisValue, args) => {
+        requireArgs("set", args, 2)
+        const target = self(thisValue, "set").headers
+        return attempt(() => target.set(arg(args, 0), arg(args, 1)))
+      },
+    ],
+    // Iterator.from because Bun's Headers typings predate iterator helpers; the runtime iterators already have them.
+    [
+      "keys",
+      0,
+      (thisValue) => new IteratorObj(builtins.Iterator, Iterator.from(self(thisValue, "keys").headers.keys())),
+    ],
+    [
+      "values",
+      0,
+      (thisValue) => new IteratorObj(builtins.Iterator, Iterator.from(self(thisValue, "values").headers.values())),
+    ],
+    [
+      "entries",
+      0,
+      (thisValue) =>
+        new IteratorObj(
+          builtins.Iterator,
+          Iterator.from(self(thisValue, "entries").headers.entries()).map(([key, value]) => wrap([key, value])),
+        ),
+    ],
+    [
+      "forEach",
+      1,
+      (thisValue, args) => {
+        requireArgs("forEach", args, 1)
+        const target = self(thisValue, "forEach")
+        const apply = applyCollectionCallback(ctx, args[0], "Headers.forEach")
+        return Effect.gen(function* () {
+          for (const [key, value] of Array.from(target.headers.entries())) yield* apply([value, key, target])
+          return undefined
+        })
+      },
+    ],
+  ])
+  define(proto, IteratorSymbol, get(proto, "entries"), hidden)
+  return headers
+}
@@ -0,0 +1,19 @@
+import { methods, receiver } from "../interpreter/native.js"
+import { IteratorObj, record } from "../interpreter/objects.js"
+import type { Interpreter } from "../interpreter/interpreter.js"
+
+// Every built-in collection iterator shares the Iterator prototype; JS gives each collection its own, which is only
+// observable through getPrototypeOf.
+export const iteratorGlobals = <R>(ctx: Interpreter<R>): void => {
+  const builtins = ctx.builtins
+  methods(builtins, builtins.Iterator, [
+    [
+      "next",
+      0,
+      (thisValue) => {
+        const step = receiver(IteratorObj, thisValue, "Iterator.prototype.next").iterator.next()
+        return record(builtins.Object, { value: step.value, done: Boolean(step.done) })
+      },
+    ],
+  ])
+}
@@ -50,6 +50,7 @@ export const numberGlobal = <R>(ctx: Interpreter<R>) => {
  }
  methods(builtins, builtins.Number, [
    ["toFixed", 1, (thisValue, args) => self(thisValue, "toFixed").toFixed(optNum("toFixed", args[0]))],
+    ["toLocaleString", 0, (thisValue) => self(thisValue, "toLocaleString").toLocaleString("en-US")],
    [
      "toExponential",
      1,
@@ -29,7 +29,7 @@ import {
  set,
 } from "../interpreter/objects.js"
 import { containsOpaqueReference, describeValue, rejectCircularInsertion } from "../interpreter/references.js"
-import { preserveConsumerError } from "../interpreter/callback.js"
+import { invoke, preserveConsumerError } from "../interpreter/callback.js"
 import type { Interpreter } from "../interpreter/interpreter.js"
 import { ToolReference } from "../tool-runtime.js"
 import { groupBy } from "./collections.js"
@@ -196,7 +196,7 @@ export const objectGlobal = <R>(ctx: Interpreter<R>) => {
        true,
    ],
    ["toString", 0, (thisValue) => `[object ${classTag(thisValue)}]`],
-    ["toLocaleString", 0, (thisValue) => `[object ${classTag(thisValue)}]`],
+    ["toLocaleString", 0, (thisValue) => invoke(ctx, thisValue, "toString", "Object.prototype.toLocaleString")],
    [
      "valueOf",
      0,
@@ -1,8 +1,8 @@
 import { Effect } from "effect"
-import { constructor, type Method, methods } from "../interpreter/native.js"
+import { constructor, fn, type Method, methods } from "../interpreter/native.js"
 import { checkArrayLength, checkStringLength } from "../interpreter/limits.js"
-import { invalidData, rangeError, typeError } from "../interpreter/model.js"
-import { Arr, PromiseObj, RegExpObj, record } from "../interpreter/objects.js"
+import { invalidData, IteratorSymbol, rangeError, typeError } from "../interpreter/model.js"
+import { define, hidden, Arr, IteratorObj, PromiseObj, RegExpObj, record } from "../interpreter/objects.js"
 import { containsOpaqueReference, typeofValue } from "../interpreter/references.js"
 import { applyCollectionCallback, isSupportedCallback } from "../interpreter/callback.js"
 import type { Interpreter } from "../interpreter/interpreter.js"
@@ -150,6 +150,8 @@ export const stringGlobal = <R>(ctx: Interpreter<R>) => {
    simple("valueOf", 0, (value) => value),
    simple("toLowerCase", 0, (value) => value.toLowerCase()),
    simple("toUpperCase", 0, (value) => value.toUpperCase()),
+    simple("toLocaleLowerCase", 0, (value) => value.toLowerCase()),
+    simple("toLocaleUpperCase", 0, (value) => value.toUpperCase()),
    simple("trim", 0, (value) => value.trim()),
    simple("trimStart", 0, (value) => value.trimStart()),
    simple("trimLeft", 0, (value) => value.trimStart()),
@@ -258,5 +260,16 @@ export const stringGlobal = <R>(ctx: Interpreter<R>) => {
      return joined
    }),
  ])
+  define(
+    builtins.String,
+    IteratorSymbol,
+    fn(
+      builtins,
+      "[Symbol.iterator]",
+      0,
+      (thisValue) => new IteratorObj(builtins.Iterator, self(thisValue, "[Symbol.iterator]")[Symbol.iterator]()),
+    ),
+    hidden,
+  )
  return string
 }
@@ -1,7 +1,19 @@
 import { Effect } from "effect"
 import { constructor, fn, type Method, methods, prototypeFrom, receiver, requiresNew } from "../interpreter/native.js"
-import { PendingThrow, typeError, uriError } from "../interpreter/model.js"
-import { defineAccessor, entries, isWrapper, Arr, Obj, URLObj, URLSearchParamsObj } from "../interpreter/objects.js"
+import { IteratorSymbol, PendingThrow, typeError, uriError } from "../interpreter/model.js"
+import {
+  define,
+  defineAccessor,
+  entries,
+  get,
+  hidden,
+  isWrapper,
+  Arr,
+  IteratorObj,
+  Obj,
+  URLObj,
+  URLSearchParamsObj,
+} from "../interpreter/objects.js"
 import { isRuntimeReference } from "../interpreter/references.js"
 import { applyCollectionCallback, preserveConsumerError } from "../interpreter/callback.js"
 import type { Interpreter } from "../interpreter/interpreter.js"
@@ -107,12 +119,10 @@ export const urlGlobal = <R>(ctx: Interpreter<R>) => {
  return url
 }

-const readPair = <R>(ctx: Interpreter<R>, value: unknown): Effect.Effect<Array<string>, unknown, R> =>
+const readPair = <R>(ctx: Interpreter<R>, value: unknown, label: string): Effect.Effect<Array<string>, unknown, R> =>
  Effect.gen(function* () {
    const cursor = yield* ctx.iterate(value)
-    if (cursor === undefined) {
-      throw typeError("new URLSearchParams(...) expects iterable [name, value] pairs.")
-    }
+    if (cursor === undefined) throw typeError(`${label} expects iterable [name, value] pairs.`)
    const items: Array<string> = []
    while (true) {
      const step = yield* cursor.next
@@ -126,6 +136,29 @@ const readPair = <R>(ctx: Interpreter<R>, value: unknown): Effect.Effect<Array<s
    }
  })

+/**
+ * Reads a synchronous iterable of `[name, value]` pairs as strings; `undefined` when `init` is not iterable. As in
+ * WebIDL, the whole sequence is converted before any pair's length is checked.
+ */
+export const readPairs = <R>(
+  ctx: Interpreter<R>,
+  init: unknown,
+  label: string,
+): Effect.Effect<Array<[string, string]> | undefined, unknown, R> =>
+  Effect.gen(function* () {
+    const cursor = yield* ctx.iterate(init)
+    if (cursor === undefined) return undefined
+    const pairs: Array<Array<string>> = []
+    while (true) {
+      const step = yield* cursor.next
+      if (step.done) {
+        if (pairs.some((entry) => entry.length !== 2)) throw typeError(`${label} expects iterable [name, value] pairs.`)
+        return pairs as Array<[string, string]>
+      }
+      pairs.push(yield* preserveConsumerError(cursor, readPair(ctx, step.value, label)))
+    }
+  })
+
 const constructURLSearchParams = <R>(
  ctx: Interpreter<R>,
  init: unknown,
@@ -139,20 +172,8 @@ const constructURLSearchParams = <R>(
    return Effect.succeed(wrap(new URLSearchParams(coerceToString(init))))
  }
  return Effect.gen(function* () {
-    const cursor = yield* ctx.iterate(init)
-    if (cursor !== undefined) {
-      const pairs: Array<Array<string>> = []
-      while (true) {
-        const step = yield* cursor.next
-        if (step.done) {
-          if (pairs.some((entry) => entry.length !== 2)) {
-            throw typeError("new URLSearchParams(...) expects iterable [name, value] pairs.")
-          }
-          return wrap(new URLSearchParams(pairs.map((entry): [string, string] => [entry[0] ?? "", entry[1] ?? ""])))
-        }
-        pairs.push(yield* preserveConsumerError(cursor, readPair(ctx, step.value)))
-      }
-    }
+    const pairs = yield* readPairs(ctx, init, "new URLSearchParams(...)")
+    if (pairs !== undefined) return wrap(new URLSearchParams(pairs))
    if (isRuntimeReference(init)) {
      throw typeError("new URLSearchParams(...) expects a query string, data object, or synchronous iterable pairs.")
    }
@@ -249,13 +270,18 @@ export const urlSearchParamsGlobal = <R>(ctx: Interpreter<R>) => {
        return undefined
      },
    ],
-    ["keys", 0, (thisValue) => wrap(Array.from(self(thisValue, "keys").params.keys()))],
-    ["values", 0, (thisValue) => wrap(Array.from(self(thisValue, "values").params.values()))],
+    ["keys", 0, (thisValue) => new IteratorObj(builtins.Iterator, self(thisValue, "keys").params.keys())],
+    ["values", 0, (thisValue) => new IteratorObj(builtins.Iterator, self(thisValue, "values").params.values())],
    [
      "entries",
      0,
      (thisValue) =>
-        wrap(Array.from(self(thisValue, "entries").params.entries(), ([key, value]) => wrap([key, value]))),
+        new IteratorObj(
+          builtins.Iterator,
+          self(thisValue, "entries")
+            .params.entries()
+            .map(([key, value]) => wrap([key, value])),
+        ),
    ],
    ["toString", 0, (thisValue) => self(thisValue, "toString").params.toString()],
    [
@@ -272,5 +298,6 @@ export const urlSearchParamsGlobal = <R>(ctx: Interpreter<R>) => {
      },
    ],
  ])
+  define(proto, IteratorSymbol, get(proto, "entries"), hidden)
  return searchParams
 }
@@ -13,6 +13,7 @@ import {
  SetObj,
  URLObj,
  URLSearchParamsObj,
+  HeadersObj,
 } from "../interpreter/objects.js"
 import type { Interpreter } from "../interpreter/interpreter.js"

@@ -28,6 +29,7 @@ export const coerceToString = (value: unknown): string => {
  if (value instanceof SetObj) return "[object Set]"
  if (value instanceof URLObj) return value.url.href
  if (value instanceof URLSearchParamsObj) return value.params.toString()
+  if (value instanceof HeadersObj) return "[object Headers]"
  if (value instanceof Bytes) return value.bytes.join(",")
  if (value instanceof ErrorObj) {
    // Match Error.prototype.toString: "name: message", or just one when the other is empty.
@@ -1,4 +1,4 @@
-import { JsonPointer, Schema } from "effect"
+import { JsonPointer, Schema, SchemaAST } from "effect"
 import type { Tool, JsonSchema, SchemaType } from "./tool.js"

 const isEffectSchema = (schema: SchemaType): schema is Schema.Decoder<unknown> & Schema.Top => Schema.isSchema(schema)
@@ -203,7 +203,7 @@ const renderSchema = (
 export const toTypeScript = (schema: Schema.Top, decoded = false, pretty = false): string => {
  try {
    const visible = decoded ? Schema.toType(schema) : schema
-    const document = Schema.toJsonSchemaDocument(visible) as {
+    const document = Schema.toJsonSchemaDocument(visible, { onExcessProperty: "error" }) as {
      readonly schema: JsonSchema
      readonly definitions?: Readonly<Record<string, JsonSchema>>
    }
@@ -230,7 +230,7 @@ export type InputProperty = {
 export const inputProperties = <R>(tool: Tool<R>): Array<InputProperty> => {
  try {
    const document = isEffectSchema(tool.input)
-      ? (Schema.toJsonSchemaDocument(tool.input) as {
+      ? (Schema.toJsonSchemaDocument(tool.input, { onExcessProperty: "error" }) as {
          readonly schema: JsonSchema
          readonly definitions?: Readonly<Record<string, JsonSchema>>
        })
@@ -261,10 +261,16 @@ export const inputProperties = <R>(tool: Tool<R>): Array<InputProperty> => {
 export const inputTypeScript = <R>(tool: Tool<R>, pretty = false): string =>
  isEffectSchema(tool.input) ? toTypeScript(tool.input, false, pretty) : jsonSchemaToTypeScript(tool.input, pretty)

-// Empty object schemas render as `{}` in compact form; anything with properties,
-// an index signature, or union members renders differently, so equality is a
-// conservative emptiness test for both Effect and JSON Schema inputs.
-export const isEmptyInput = <R>(tool: Tool<R>): boolean => inputTypeScript(tool) === "{}"
+// Effect 4.0 models an empty Struct as a non-nullish object, so inspect its AST.
+// Raw JSON Schema inputs retain the compact `{}` rendering check.
+export const isEmptyInput = <R>(tool: Tool<R>): boolean => {
+  if (!isEffectSchema(tool.input)) return inputTypeScript(tool) === "{}"
+  return (
+    SchemaAST.isObjects(tool.input.ast) &&
+    tool.input.ast.propertySignatures.length === 0 &&
+    tool.input.ast.indexSignatures.length === 0
+  )
+}

 export const outputTypeScript = <R>(tool: Tool<R>, pretty = false): string =>
  tool.output === undefined
@@ -298,21 +298,18 @@ const cases = [
  },
  {
    path: "test/built-ins/Array/prototype/keys/iteration.js",
-    code: `return ["a", "b", "c"].keys()`,
-    expected: [0, 1, 2],
+    code: `const it = ["a", "b", "c"].keys(); return [it.next(), it.next(), it.next(), it.next()]`,
+    expected: [{ value: 0, done: false }, { value: 1, done: false }, { value: 2, done: false }, { done: true }],
  },
  {
    path: "test/built-ins/Array/prototype/values/iteration.js",
-    code: `return ["a", "b", "c"].values()`,
-    expected: ["a", "b", "c"],
+    code: `const it = ["a", "b", "c"].values(); return [it.next(), it.next(), it.next(), it.next()]`,
+    expected: [{ value: "a", done: false }, { value: "b", done: false }, { value: "c", done: false }, { done: true }],
  },
  {
    path: "test/built-ins/Array/prototype/entries/iteration.js",
-    code: `return ["a", "b"].entries()`,
-    expected: [
-      [0, "a"],
-      [1, "b"],
-    ],
+    code: `const it = ["a", "b"].entries(); return [it.next(), it.next(), it.next()]`,
+    expected: [{ value: [0, "a"], done: false }, { value: [1, "b"], done: false }, { done: true }],
  },
  {
    path: "test/built-ins/Array/isArray/15.4.3.2-0-3.js",
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Kit Langton	ffe2284332	refactor(app): declare open legacy persistence shapes	2026-09-20 20:15:59 -07:00
Kit Langton	6345548b5f	test(app): align summary resize transition	2026-09-20 19:44:22 -07:00
Kit Langton	17a04f1f71	fix(client): accept rc.115 schema metadata	2026-09-20 19:44:22 -07:00
Kit Langton	094a08b09c	fix: preserve schema compatibility on rc.115	2026-09-20 19:44:22 -07:00
Kit Langton	6775d13f59	chore: upgrade Effect to rc.115	2026-09-20 19:44:22 -07:00
Aiden Cline	cbdd1f66da	fix(codemode): locate failures in the submitted source (#50197 )	2026-09-20 20:47:54 -05:00
Luke Parker	788eb0fa29	fix(cli): report fatal startup causes on stderr (#50240 )	2026-09-20 22:57:20 +00:00
opencode-agent[bot]andkitlangton	58fcad77a8	feat(tui): copy session ID from tab menu (#50181 ) Co-authored-by: kitlangton <7587245+kitlangton@users.noreply.github.com>	2026-09-20 19:15:37 +00:00
Aiden Cline	c555559ac1	refactor(plugin): name tool execution context (#50195 )	2026-09-20 11:36:19 -05:00
Aiden Cline	e3a3fa7108	fix(plugin): forward Promise tool cancellation (#50190 )	2026-09-20 11:22:49 -05:00
opencode-agent[bot]	6238af397e	chore(core): refresh bundled models.dev snapshot	2026-09-20 16:17:29 +00:00
Aiden Cline	7ffd75faf6	fix(core): restore anthropic budget variants (#50182 )	2026-09-20 10:50:21 -05:00
opencode-agent[bot]	1f8ab95695	chore(core): refresh bundled models.dev snapshot	2026-09-20 15:37:06 +00:00
Aiden Cline	62dc1f7696	feat(codemode): add toLocaleString, Error.isError, and Map.getOrInsert (#50098 )	2026-09-20 10:23:23 -05:00
opencode-agent[bot]	66f10ab7bf	chore(core): refresh bundled models.dev snapshot	2026-09-20 14:37:06 +00:00
opencode-agent[bot]	1ca8f63a79	chore(core): refresh bundled models.dev snapshot	2026-09-20 13:36:51 +00:00
opencode-agent[bot]	03bcdd580d	chore(core): refresh bundled models.dev snapshot	2026-09-20 12:43:39 +00:00
opencode-agent[bot]	cc502f7e5f	chore(core): refresh bundled models.dev snapshot	2026-09-20 11:37:37 +00:00
opencode-agent[bot]	64ce8771c0	chore(core): refresh bundled models.dev snapshot	2026-09-20 10:37:01 +00:00
opencode-agent[bot]	702a73d91a	chore(core): refresh bundled models.dev snapshot	2026-09-20 09:37:50 +00:00
opencode	991b727eb8	sync release versions for v2.0.11	2026-09-20 08:57:41 +00:00
opencode-agent[bot]	ba342ce227	chore(core): refresh bundled models.dev snapshot	2026-09-20 08:42:13 +00:00
David Hill	1464545665	fix(app): center timeline beside summary (#49620 )	2026-09-20 18:06:32 +10:00
David Hill	fecacc9e68	fix(app): match vertical nav tab states (#49619 )	2026-09-20 18:03:49 +10:00
David HillandLukeParkerDev	1f73b4806b	fix(desktop): polish browser panel states and navigation (#49432 ) Co-authored-by: LukeParkerDev <10430890+Hona@users.noreply.github.com>	2026-09-20 07:54:25 +00:00
opencode-agent[bot]	da2ce02596	chore(core): refresh bundled models.dev snapshot	2026-09-20 07:38:48 +00:00
opencode-agent[bot]	25f35dcfb8	chore(core): refresh bundled models.dev snapshot	2026-09-20 06:49:40 +00:00
Luke Parker	717f81ce08	chore(desktop): attribute renderer CPU profiles to source files (#50114 )	2026-09-20 16:30:35 +10:00
Luke Parker	5fdfcc7a80	perf(desktop): hand the window its persisted stores before the first render (#50113 )	2026-09-20 16:29:02 +10:00
Luke Parker	0530c8e512	perf(desktop): talk to the main process without the Effect runtime in the renderer (#50112 )	2026-09-20 16:26:08 +10:00
Luke Parker	1d8cf4564b	perf(desktop): move startup work that the first window does not need off its path (#50111 )	2026-09-20 16:23:37 +10:00
Luke Parker	7e88f6bb18	perf(desktop): bundle the renderer's initial module graph as one chunk (#50110 )	2026-09-20 16:19:28 +10:00
Luke Parker	af592fb779	perf(desktop): serve the renderer's first assets before evaluating the main bundle (#50109 )	2026-09-20 16:18:50 +10:00
Luke Parker	7fc3f68007	perf(desktop): boot the renderer alongside the main bundle (#50108 )	2026-09-20 16:15:58 +10:00
opencode-agent[bot]	cdcbb0047e	chore(core): refresh bundled models.dev snapshot	2026-09-20 05:38:29 +00:00
opencode-agent[bot]	a1956a7522	chore(core): refresh bundled models.dev snapshot	2026-09-20 04:42:05 +00:00
opencode-agent[bot]	55bc7fd403	chore(core): refresh bundled models.dev snapshot	2026-09-20 03:43:32 +00:00
opencode-agent[bot]	3049b1e684	chore(core): refresh bundled models.dev snapshot	2026-09-20 02:45:23 +00:00
opencode-agent[bot]	1f36a7aff8	chore(core): refresh bundled models.dev snapshot	2026-09-20 01:31:11 +00:00
Aiden Cline	eb0e26b974	feat(codemode): return live iterators from keys, values, and entries (#50061 )	2026-09-19 18:46:35 -05:00
opencode-agent[bot]	6f2b0e7833	chore(core): refresh bundled models.dev snapshot	2026-09-19 23:38:19 +00:00
opencode-agent[bot]	f153255942	chore(core): refresh bundled models.dev snapshot	2026-09-19 22:37:11 +00:00
opencode-agent[bot]	fef2fad76f	chore(core): refresh bundled models.dev snapshot	2026-09-19 22:15:20 +00:00
Aiden Cline	f30d06ea34	fix(core): pin the session to http after repeated websocket stream losses (#50031 )	2026-09-19 16:45:54 -05:00
Kit Langton	dfa44e94e8	fix(tui): use focused action token for question form border (#50037 )	2026-09-19 19:07:10 +00:00
Aiden Cline	b81e10a461	fix(core): re-read models.dev catalog after subscribing to Refreshed (#50012 )	2026-09-19 13:31:38 -05:00
Aiden Cline	65c93b69ed	fix(ai): never fail decoding on Responses error frames (#49402 )	2026-09-19 13:27:05 -05:00
Aiden Cline	b073b052d3	fix(ai): remove bounded websocket inbound queues (#50026 )	2026-09-19 13:26:37 -05:00
Aiden Cline	728b2b6052	fix(core): honor session permissions in skill and MCP discovery (#50015 )	2026-09-19 12:59:09 -05:00
Aiden Cline	cc3ce20ab4	feat(codemode): add the Headers built-in (#49280 )	2026-09-19 12:35:14 -05:00
Aiden Cline	4ad5001be2	chore(core): refresh bundled models.dev snapshot (#50009 )	2026-09-19 12:24:10 -05:00
Matt SimpsonandAiden Cline	14b3c2ea4b	feat(cli): support Vite+ installations (#49624 ) Co-authored-by: Aiden Cline <63023139+rekram1-node@users.noreply.github.com>	2026-09-19 12:16:47 -05:00
opencode-agent[bot]andrekram1-node	558bd54c9b	fix(tui): use muted autocomplete label text (#50008 ) Co-authored-by: rekram1-node <rekram1-node@users.noreply.github.com>	2026-09-19 12:16:41 -05:00
Filip	7e70f7e1ab	feat(tui): label mention autocomplete options (#48551 )	2026-09-19 16:05:03 +02:00
opencode	cb6d95b7ef	sync release versions for v2.0.10	2026-09-19 13:40:59 +00:00
opencode-agent[bot]andBrendonovich	7020944359	fix(app): restore mobile tab interactions (#49964 ) Co-authored-by: Brendonovich <14191578+Brendonovich@users.noreply.github.com>	2026-09-19 21:00:45 +08:00
Shoubhit Dash	4b00dd2713	feat(tui): session-scoped plugin toasts (#49962 )	2026-09-19 18:24:38 +05:30
Chris YangandBrendan Allan	b447627f5f	fix(app): keep shortcuts search field focused while typing (#49779 ) Co-authored-by: Brendan Allan <14191578+Brendonovich@users.noreply.github.com>	2026-09-19 20:43:58 +08:00
opencode-agent[bot]andBrendonovich	5848ee0d24	fix(app): restore attachment classification (#49932 ) Co-authored-by: Brendonovich <14191578+Brendonovich@users.noreply.github.com>	2026-09-19 09:13:29 +00:00
Dax Raad	839aa25c3e	feat(cli): publish Homebrew formula	2026-09-19 04:37:36 -04:00
Dax Raad	c42f1c9232	Revert "feat(web): add v2 announcement banner to legacy docs" This reverts commit `7b7a67080e`.	2026-09-19 03:24:40 -04:00
Kit Langton	417f6d234d	fix(tui): restore running and unread status hue aliases (#49907 )	2026-09-19 02:05:53 -04:00
opencode	45a13af0ee	sync release versions for v2.0.9	2026-09-19 05:13:01 +00:00
Luke Parker	e50d845451	fix(desktop): run WSL commands with --exec so inline scripts are not pre-expanded (#49902 )	2026-09-19 14:36:04 +10:00
Kit Langton	56816621f8	fix(tui): restore foreground hue step for tab status colors (#49899 )	2026-09-19 04:33:23 +00:00
Luke Parker	7125f5f8b5	chore(desktop): measure the startup bench from the screen (#49894 )	2026-09-19 14:06:58 +10:00
opencode-agent[bot]	01a6ed8d97	chore: update nix node_modules hashes	2026-09-19 02:49:44 +00:00
opencode-agent[bot]rekram1-node Aiden Cline	004583d598	refactor(codemode): remove TypeScript stripping (#49870 ) Co-authored-by: rekram1-node <rekram1-node@users.noreply.github.com> Co-authored-by: Aiden Cline <aidenpcline@gmail.com>	2026-09-18 21:24:11 -05:00
Aiden Cline	cbd911368e	refactor(schema): separate provider and model settings (#49850 )	2026-09-18 21:20:08 -05:00
opencode-agent[bot]	8bfb247854	chore: update nix node_modules hashes	2026-09-19 02:20:04 +00:00
Luke Parker	dd71cdbd84	fix(app): stop retaining failed sends in history and oversized toast text (#49717 )	2026-09-19 12:00:55 +10:00
Luke Parker	1c90e8f01c	perf(app): drop luxon for the three date operations that used it (#49876 )	2026-09-19 12:00:32 +10:00
Luke Parker	9843d13c29	chore(desktop): record startup marks for the benchmark (#49872 )	2026-09-19 12:00:03 +10:00
Luke Parker	871db0025e	fix(browser): describe tabs.open focus as an explicit opt-out (#49877 )	2026-09-19 11:55:49 +10:00
Dax Raad	7b7a67080e	feat(web): add v2 announcement banner to legacy docs	2026-09-18 21:35:13 -04:00
Aiden Cline	3361953fe1	fix(core): explain user-invoked skills in skill guidance (#49871 )	2026-09-18 20:32:36 -05:00
opencode-agent[bot]andrekram1-node	e9201ce933	fix(core): retain console config after refresh errors (#49873 ) Co-authored-by: rekram1-node <rekram1-node@users.noreply.github.com>	2026-09-18 20:22:23 -05:00
Dax Raad	b38d72e174	docs: link v1 docs from header	2026-09-18 20:54:48 -04:00
Luke Parker	e1e2efe8ec	perf(desktop): show the first window the moment Electron is ready (#49869 )	2026-09-19 10:41:27 +10:00
Luke Parker	c2b171d7c4	perf(client): poll for a starting service every 25 ms (#49780 )	2026-09-19 10:40:32 +10:00
Luke Parker	c3bf8864b9	perf(ui): let the resize observer take the first scrollbar measurement (#49778 )	2026-09-19 10:38:33 +10:00
Luke Parker	3693f56374	perf(desktop): enable the V8 code cache for the renderer scheme (#49767 )	2026-09-19 10:35:07 +10:00
Luke Parker	971f4e558e	perf(desktop): load node-pty when an interactive WSL install starts (#49789 )	2026-09-19 10:34:44 +10:00
Luke Parker	dd95e3f2ed	perf(desktop): collect orphaned draft blobs after the window is up (#49797 )	2026-09-19 10:34:25 +10:00
Luke Parker	dfde4628e3	perf(desktop): only persist the background colour when it changes (#49770 )	2026-09-19 10:34:04 +10:00
Luke Parker	e755fce13d	perf(desktop): leave declarations and source maps out of the asar (#49772 )	2026-09-19 10:33:48 +10:00
Luke Parker	5b565e8923	perf(desktop): create windows before the background service connects (#49763 )	2026-09-19 10:33:39 +10:00
Kit Langton	ec8d95f1f2	fix(simulation): include images in UI captures (#49868 )	2026-09-18 17:21:44 -07:00
opencode-agent[bot]	ea52d18ec5	chore: update nix node_modules hashes	2026-09-18 23:57:47 +00:00
Aiden Clineandrekram1-node	0f9504d6c5	feat(plugin): add list to the tool domain (#49838 ) Co-authored-by: rekram1-node <rekram1-node@users.noreply.github.com>	2026-09-18 18:51:37 -05:00
Luke Parker	f6353a48b5	perf(desktop): replace electron-store with a plain JSON settings store (#49791 )	2026-09-19 09:41:44 +10:00
Luke Parker	4facc03371	perf(desktop): remember window bounds without electron-window-state (#49792 )	2026-09-19 09:41:15 +10:00
Luke Parker	485a027c1a	perf(desktop): load the browser pane on first use (#49774 )	2026-09-19 09:39:36 +10:00
Luke Parker	988a66ca4f	perf(desktop): ship the bundled CLI version instead of spawning for it (#49762 )	2026-09-19 09:36:55 +10:00
Luke Parker	98c6b41573	chore(desktop): add a packaged startup benchmark (#49758 )	2026-09-19 09:23:09 +10:00
opencode-agent[bot]andthdxr	4ee9bf0213	revert(core): remove autonomous goal command (#49866 ) Co-authored-by: thdxr <826656+thdxr@users.noreply.github.com>	2026-09-18 23:14:36 +00:00
James Long	681338c533	refactor(theme): detect theme format by fields (#49853 )	2026-09-18 17:19:21 -04:00
Dax	5464aa4a74	feat(core): add autonomous goal command (#45379 )	2026-09-18 20:59:08 +00:00
James Long	36083c9520	docs(www): document theme format and workflow (#49855 )	2026-09-18 16:46:32 -04:00
James Long	168aba6183	feat(theme): register native V2 opencode theme (#49846 )	2026-09-18 16:33:59 -04:00
Kit Langton	ec19dc09c7	fix(sdk): support Node package imports (#49810 )	2026-09-18 13:10:59 -07:00
Aiden Cline	fca4701688	fix(ai): allow future Anthropic option values (#49835 )	2026-09-18 14:24:11 -05:00
James Long	c720ca20ed	refactor(theme): rename default tokens to base (#49837 )	2026-09-18 15:20:15 -04:00
James Long	dae1e8abbd	docs(www): finalize background color (#49203 )	2026-09-18 15:07:49 -04:00
James Long	ffe4d1522c	refactor(theme): derive V1 hue angles from swatches (#49839 )	2026-09-18 15:00:09 -04:00
James Long	b1860465cd	refactor(theme): split base and mode overrides (#49826 )	2026-09-18 14:48:27 -04:00
CestercianandAiden Cline	cab11795e5	fix(tui): pass markdown renderer into /btw answer dialog (#49804 ) Co-authored-by: Aiden Cline <63023139+rekram1-node@users.noreply.github.com>	2026-09-18 13:32:11 -05:00
James Long	810e79a6d4	refactor(theme): align hue direction with mode (#49820 )	2026-09-18 13:29:19 -04:00