refactor(session): use onInterrupt finalizer for cancelled tool output

Wire the AI SDK's abortSignal into the tool fiber via runPromiseExit's
signal option so interruption is first-class, and move the "finalize on
cancel" path into an Effect.onInterrupt finalizer that re-awaits the
still-running native Promise uninterruptibly, builds the output, and
posts it through completeToolCall.

Replaces the imperative `if (options.abortSignal?.aborted)` tail check
with structural interruption handling. When the fiber is interrupted,
the finalizer captures the truncated bash output (or MCP tool result)
and the .then on runPromiseExit resolves the SDK's Promise with the
captured value instead of propagating the interrupt cause as a
rejection, so the tool is reported as successfully completed rather
than as a tool-error.

InstanceRef is provided on the tool fiber so InstanceState.context
resolves through ServiceMap rather than falling through to the
AsyncLocalStorage, which the onInterrupt finalizer runs outside of.

bun.lock

@@ -27,7 +27,7 @@
     },
     "packages/app": {
       "name": "@opencode-ai/app",
-      "version": "1.4.0",
+      "version": "1.4.2",
       "dependencies": {
         "@kobalte/core": "catalog:",
         "@opencode-ai/sdk": "workspace:*",
@@ -81,7 +81,7 @@
     },
     "packages/console/app": {
       "name": "@opencode-ai/console-app",
-      "version": "1.4.0",
+      "version": "1.4.2",
       "dependencies": {
         "@cloudflare/vite-plugin": "1.15.2",
         "@ibm/plex": "6.4.1",
@@ -115,7 +115,7 @@
     },
     "packages/console/core": {
       "name": "@opencode-ai/console-core",
-      "version": "1.4.0",
+      "version": "1.4.2",
       "dependencies": {
         "@aws-sdk/client-sts": "3.782.0",
         "@jsx-email/render": "1.1.1",
@@ -142,7 +142,7 @@
     },
     "packages/console/function": {
       "name": "@opencode-ai/console-function",
-      "version": "1.4.0",
+      "version": "1.4.2",
       "dependencies": {
         "@ai-sdk/anthropic": "3.0.64",
         "@ai-sdk/openai": "3.0.48",
@@ -166,7 +166,7 @@
     },
     "packages/console/mail": {
       "name": "@opencode-ai/console-mail",
-      "version": "1.4.0",
+      "version": "1.4.2",
       "dependencies": {
         "@jsx-email/all": "2.2.3",
         "@jsx-email/cli": "1.4.3",
@@ -190,7 +190,7 @@
     },
     "packages/desktop": {
       "name": "@opencode-ai/desktop",
-      "version": "1.4.0",
+      "version": "1.4.2",
       "dependencies": {
         "@opencode-ai/app": "workspace:*",
         "@opencode-ai/ui": "workspace:*",
@@ -223,14 +223,8 @@
     },
     "packages/desktop-electron": {
       "name": "@opencode-ai/desktop-electron",
-      "version": "1.4.0",
+      "version": "1.4.2",
       "dependencies": {
-        "@opencode-ai/app": "workspace:*",
-        "@opencode-ai/ui": "workspace:*",
-        "@solid-primitives/i18n": "2.2.1",
-        "@solid-primitives/storage": "catalog:",
-        "@solidjs/meta": "catalog:",
-        "@solidjs/router": "0.15.4",
         "effect": "catalog:",
         "electron-context-menu": "4.1.2",
         "electron-log": "^5",
@@ -238,24 +232,41 @@
         "electron-updater": "^6",
         "electron-window-state": "^5.0.3",
         "marked": "^15",
-        "solid-js": "catalog:",
-        "tree-kill": "^1.2.2",
       },
       "devDependencies": {
         "@actions/artifact": "4.0.0",
+        "@lydell/node-pty": "catalog:",
+        "@opencode-ai/app": "workspace:*",
+        "@opencode-ai/ui": "workspace:*",
+        "@solid-primitives/i18n": "2.2.1",
+        "@solid-primitives/storage": "catalog:",
+        "@solidjs/meta": "catalog:",
+        "@solidjs/router": "0.15.4",
         "@types/bun": "catalog:",
         "@types/node": "catalog:",
         "@typescript/native-preview": "catalog:",
+        "@valibot/to-json-schema": "1.6.0",
         "electron": "40.4.1",
         "electron-builder": "^26",
         "electron-vite": "^5",
+        "solid-js": "catalog:",
+        "sury": "11.0.0-alpha.4",
         "typescript": "~5.6.2",
         "vite": "catalog:",
+        "zod-openapi": "5.4.6",
+      },
+      "optionalDependencies": {
+        "@lydell/node-pty-darwin-arm64": "1.2.0-beta.10",
+        "@lydell/node-pty-darwin-x64": "1.2.0-beta.10",
+        "@lydell/node-pty-linux-arm64": "1.2.0-beta.10",
+        "@lydell/node-pty-linux-x64": "1.2.0-beta.10",
+        "@lydell/node-pty-win32-arm64": "1.2.0-beta.10",
+        "@lydell/node-pty-win32-x64": "1.2.0-beta.10",
       },
     },
     "packages/enterprise": {
       "name": "@opencode-ai/enterprise",
-      "version": "1.4.0",
+      "version": "1.4.2",
       "dependencies": {
         "@opencode-ai/ui": "workspace:*",
         "@opencode-ai/util": "workspace:*",
@@ -284,7 +295,7 @@
     },
     "packages/function": {
       "name": "@opencode-ai/function",
-      "version": "1.4.0",
+      "version": "1.4.2",
       "dependencies": {
         "@octokit/auth-app": "8.0.1",
         "@octokit/rest": "catalog:",
@@ -300,7 +311,7 @@
     },
     "packages/opencode": {
       "name": "opencode",
-      "version": "1.4.0",
+      "version": "1.4.2",
       "bin": {
         "opencode": "./bin/opencode",
       },
@@ -336,7 +347,7 @@
         "@hono/node-ws": "1.3.0",
         "@hono/standard-validator": "0.1.5",
         "@hono/zod-validator": "catalog:",
-        "@lydell/node-pty": "1.2.0-beta.10",
+        "@lydell/node-pty": "catalog:",
         "@modelcontextprotocol/sdk": "1.27.1",
         "@npmcli/arborist": "9.4.0",
         "@octokit/graphql": "9.0.2",
@@ -367,7 +378,7 @@
         "drizzle-orm": "catalog:",
         "effect": "catalog:",
         "fuzzysort": "3.1.0",
-        "gitlab-ai-provider": "6.0.0",
+        "gitlab-ai-provider": "6.4.2",
         "glob": "13.0.5",
         "google-auth-library": "10.5.0",
         "gray-matter": "4.0.3",
@@ -436,7 +447,7 @@
     },
     "packages/plugin": {
       "name": "@opencode-ai/plugin",
-      "version": "1.4.0",
+      "version": "1.4.2",
       "dependencies": {
         "@opencode-ai/sdk": "workspace:*",
         "zod": "catalog:",
@@ -470,7 +481,7 @@
     },
     "packages/sdk/js": {
       "name": "@opencode-ai/sdk",
-      "version": "1.4.0",
+      "version": "1.4.2",
       "dependencies": {
         "cross-spawn": "catalog:",
       },
@@ -485,7 +496,7 @@
     },
     "packages/slack": {
       "name": "@opencode-ai/slack",
-      "version": "1.4.0",
+      "version": "1.4.2",
       "dependencies": {
         "@opencode-ai/sdk": "workspace:*",
         "@slack/bolt": "^3.17.1",
@@ -520,7 +531,7 @@
     },
     "packages/ui": {
       "name": "@opencode-ai/ui",
-      "version": "1.4.0",
+      "version": "1.4.2",
       "dependencies": {
         "@kobalte/core": "catalog:",
         "@opencode-ai/sdk": "workspace:*",
@@ -569,7 +580,7 @@
     },
     "packages/util": {
       "name": "@opencode-ai/util",
-      "version": "1.4.0",
+      "version": "1.4.2",
       "dependencies": {
         "zod": "catalog:",
       },
@@ -580,7 +591,7 @@
     },
     "packages/web": {
       "name": "@opencode-ai/web",
-      "version": "1.4.0",
+      "version": "1.4.2",
       "dependencies": {
         "@astrojs/cloudflare": "12.6.3",
         "@astrojs/markdown-remark": "6.3.1",
@@ -633,6 +644,7 @@
     "@effect/platform-node": "4.0.0-beta.43",
     "@hono/zod-validator": "0.4.2",
     "@kobalte/core": "0.13.11",
+    "@lydell/node-pty": "1.2.0-beta.10",
     "@octokit/rest": "22.0.0",
     "@openauthjs/openauth": "0.0.0-20250322224806",
     "@pierre/diffs": "1.1.0-beta.18",
@@ -2313,6 +2325,8 @@
 
     "@ungap/structured-clone": ["@ungap/structured-clone@1.3.0", "", {}, "sha512-WmoN8qaIAo7WTYWbAZuG8PYEhn5fkz7dZrqTBZ7dtt//lL2Gwms1IcnQ5yHqjDfX8Ft5j4YzDM23f87zBfDe9g=="],
 
+    "@valibot/to-json-schema": ["@valibot/to-json-schema@1.6.0", "", { "peerDependencies": { "valibot": "^1.3.0" } }, "sha512-d6rYyK5KVa2XdqamWgZ4/Nr+cXhxjy7lmpe6Iajw15J/jmU+gyxl2IEd1Otg1d7Rl3gOQL5reulnSypzBtYy1A=="],
+
     "@vercel/oidc": ["@vercel/oidc@3.1.0", "", {}, "sha512-Fw28YZpRnA3cAHHDlkt7xQHiJ0fcL+NRcIqsocZQUSmbzeIKRpwttJjik5ZGanXP+vlA4SbTg+AbA3bP363l+w=="],
 
     "@vitejs/plugin-react": ["@vitejs/plugin-react@4.7.0", "", { "dependencies": { "@babel/core": "^7.28.0", "@babel/plugin-transform-react-jsx-self": "^7.27.1", "@babel/plugin-transform-react-jsx-source": "^7.27.1", "@rolldown/pluginutils": "1.0.0-beta.27", "@types/babel__core": "^7.20.5", "react-refresh": "^0.17.0" }, "peerDependencies": { "vite": "^4.2.0 || ^5.0.0 || ^6.0.0 || ^7.0.0" } }, "sha512-gUu9hwfWvvEDBBmgtAowQCojwZmJ5mcLn3aufeCsitijs3+f2NsrPtlAWIR6OPiqljl96GVCUbLe0HyqIpVaoA=="],
@@ -3165,7 +3179,7 @@
 
     "github-slugger": ["github-slugger@2.0.0", "", {}, "sha512-IaOQ9puYtjrkq7Y0Ygl9KDZnrf/aiUJYUpVf89y8kyaxbRG7Y1SrX/jaumrv81vc61+kiMempujsM3Yw7w5qcw=="],
 
-    "gitlab-ai-provider": ["gitlab-ai-provider@6.0.0", "", { "dependencies": { "@anthropic-ai/sdk": "^0.71.0", "@anycable/core": "^0.9.2", "graphql-request": "^6.1.0", "isomorphic-ws": "^5.0.0", "openai": "^6.16.0", "socket.io-client": "^4.8.1", "vscode-jsonrpc": "^8.2.1", "zod": "^3.25.76" }, "peerDependencies": { "@ai-sdk/provider": ">=3.0.0", "@ai-sdk/provider-utils": ">=4.0.0" } }, "sha512-683GcJdrer/GhnljkbVcGsndCEhvGB8f9fUdCxQBlkuyt8rzf0G9DpSh+iMBYp9HpcSvYmYG0Qv5ks9dLrNxwQ=="],
+    "gitlab-ai-provider": ["gitlab-ai-provider@6.4.2", "", { "dependencies": { "@anthropic-ai/sdk": "^0.71.0", "@anycable/core": "^0.9.2", "graphql-request": "^6.1.0", "isomorphic-ws": "^5.0.0", "openai": "^6.16.0", "socket.io-client": "^4.8.1", "vscode-jsonrpc": "^8.2.1", "zod": "^3.25.76" }, "peerDependencies": { "@ai-sdk/provider": ">=3.0.0", "@ai-sdk/provider-utils": ">=4.0.0" } }, "sha512-Wyw6uslCuipBOr/NYwAtpgXEUJj68iJY5aekad2DjePN99JetKVQBqkLgAy9PZp2EA4OuscfRQu9qKIBN/evNw=="],
 
     "glob": ["glob@13.0.5", "", { "dependencies": { "minimatch": "^10.2.1", "minipass": "^7.1.2", "path-scurry": "^2.0.0" } }, "sha512-BzXxZg24Ibra1pbQ/zE7Kys4Ua1ks7Bn6pKLkVPZ9FZe4JQS6/Q7ef3LG1H+k7lUf5l4T3PLSyYyYJVYUvfgTw=="],
 
@@ -4577,6 +4591,8 @@
 
     "supports-preserve-symlinks-flag": ["supports-preserve-symlinks-flag@1.0.0", "", {}, "sha512-ot0WnXS9fgdkgIcePe6RHNk1WA8+muPa6cSjeR3V8K27q9BB1rTE3R1p7Hv0z1ZyAc8s6Vvv8DIyWf681MAt0w=="],
 
+    "sury": ["sury@11.0.0-alpha.4", "", { "peerDependencies": { "rescript": "12.x" }, "optionalPeers": ["rescript"] }, "sha512-oeG/GJWZvQCKtGPpLbu0yCZudfr5LxycDo5kh7SJmKHDPCsEPJssIZL2Eb4Tl7g9aPEvIDuRrkS+L0pybsMEMA=="],
+
     "system-architecture": ["system-architecture@0.1.0", "", {}, "sha512-ulAk51I9UVUyJgxlv9M6lFot2WP3e7t8Kz9+IS6D4rVba1tR9kON+Ey69f+1R4Q8cd45Lod6a4IcJIxnzGc/zA=="],
 
     "tailwindcss": ["tailwindcss@4.1.11", "", {}, "sha512-2E9TBm6MDD/xKYe+dvJZAmg3yxIEDNRc0jwlNyDg/4Fil2QcSLjFKGVff0lAf1jjeaArlG/M75Ey/EYr/OJtBA=="],
@@ -4655,8 +4671,6 @@
 
     "traverse": ["traverse@0.3.9", "", {}, "sha512-iawgk0hLP3SxGKDfnDJf8wTz4p2qImnyihM5Hh/sGvQ3K37dPi/w8sRhdNIxYA1TwFwc5mDhIJq+O0RsvXBKdQ=="],
 
-    "tree-kill": ["tree-kill@1.2.2", "", { "bin": { "tree-kill": "cli.js" } }, "sha512-L0Orpi8qGpRG//Nd+H90vFB+3iHnue1zSSGmNOOCh1GLJ7rUKVwV2HvijphGQS2UmhUZewS9VgvxYIdgr+fG1A=="],
-
     "tree-sitter-bash": ["tree-sitter-bash@0.25.0", "", { "dependencies": { "node-addon-api": "^8.2.1", "node-gyp-build": "^4.8.2" }, "peerDependencies": { "tree-sitter": "^0.25.0" }, "optionalPeers": ["tree-sitter"] }, "sha512-gZtlj9+qFS81qKxpLfD6H0UssQ3QBc/F0nKkPsiFDyfQF2YBqYvglFJUzchrPpVhZe9kLZTrJ9n2J6lmka69Vg=="],
 
     "tree-sitter-powershell": ["tree-sitter-powershell@0.25.10", "", { "dependencies": { "node-addon-api": "^7.1.0", "node-gyp-build": "^4.8.0" }, "peerDependencies": { "tree-sitter": "^0.25.0" }, "optionalPeers": ["tree-sitter"] }, "sha512-bEt8QoySpGFnU3aa8WedQyNMaN6aTwy/WUbvIVt0JSKF+BbJoSHNHu+wCbhj7xLMsfB0AuffmiJm+B8gzva8Lg=="],
@@ -4811,6 +4825,8 @@
 
     "uuid": ["uuid@13.0.0", "", { "bin": { "uuid": "dist-node/bin/uuid" } }, "sha512-XQegIaBTVUjSHliKqcnFqYypAd4S+WCYt5NIeRs6w/UAry7z8Y9j5ZwRRL4kzq9U3sD6v+85er9FvkEaBpji2w=="],
 
+    "valibot": ["valibot@1.3.1", "", { "peerDependencies": { "typescript": ">=5" }, "optionalPeers": ["typescript"] }, "sha512-sfdRir/QFM0JaF22hqTroPc5xy4DimuGQVKFrzF1YfGwaS1nJot3Y8VqMdLO2Lg27fMzat2yD3pY5PbAYO39Gg=="],
+
     "validate-npm-package-name": ["validate-npm-package-name@7.0.2", "", {}, "sha512-hVDIBwsRruT73PbK7uP5ebUt+ezEtCmzZz3F59BSr2F6OVFnJ/6h8liuvdLrQ88Xmnk6/+xGGuq+pG9WwTuy3A=="],
 
     "vary": ["vary@1.1.2", "", {}, "sha512-BNGbWLfd0eUPabhkXUVm0j8uuvREyTh5ovRa/dyow/BqAbZJyC+5fU+IzQOzmAKzYqYRAISoRhdQr3eIZ/PXqg=="],
@@ -4967,6 +4983,8 @@
 
     "zod": ["zod@4.1.8", "", {}, "sha512-5R1P+WwQqmmMIEACyzSvo4JXHY5WiAFHRMg+zBZKgKS+Q1viRa0C1hmUKtHltoIFKtIdki3pRxkmpP74jnNYHQ=="],
 
+    "zod-openapi": ["zod-openapi@5.4.6", "", { "peerDependencies": { "zod": "^3.25.74 || ^4.0.0" } }, "sha512-P2jsOOBAq/6hCwUsMCjUATZ8szkMsV5VAwZENfyxp2Hc/XPJQpVwAgevWZc65xZauCwWB9LAn7zYeiCJFAEL+A=="],
+
     "zod-to-json-schema": ["zod-to-json-schema@3.24.5", "", { "peerDependencies": { "zod": "^3.24.1" } }, "sha512-/AuWwMP+YqiPbsJx5D6TfgRTc4kTLjsh5SOcd4bLsfUg2RcEXrFMJl1DGgdHy2aCfsIA/cr/1JM0xcB2GZji8g=="],
 
     "zod-to-ts": ["zod-to-ts@1.2.0", "", { "peerDependencies": { "typescript": "^4.9.4 || ^5.0.2", "zod": "^3" } }, "sha512-x30XE43V+InwGpvTySRNz9kB7qFU8DlyEy7BsSTCHPH1R0QasMmHWZDCzYm6bVXtj/9NNJAZF3jW8rzFvH5OFA=="],

nix/hashes.json

@@ -1,8 +1,8 @@
 {
   "nodeModules": {
-    "x86_64-linux": "sha256-85wpU1oCWbthPleNIOj5d5AOuuYZ6rM7gMLZR6YJ2WU=",
-    "aarch64-linux": "sha256-C3A56SDQGJquCpIRj2JhIzr4A7N4cc9lxtEjl8bXDeM=",
-    "aarch64-darwin": "sha256-/Ij3qhGRrcLlMfl9uEacDNnGK5URxhctuQFBW4Njrog=",
-    "x86_64-darwin": "sha256-10sOPuN4eZ75orw4FI8ztCq1+AKS2e8aAfg3Z6Yn56w="
+    "x86_64-linux": "sha256-285KZ7rZLRoc6XqCZRHc25NE+mmpGh/BVeMpv8aPQtQ=",
+    "aarch64-linux": "sha256-qIwmY4TP4CI7R7G6A5OMYRrorVNXjkg25tTtVpIHm2o=",
+    "aarch64-darwin": "sha256-RwvnZQhdYZ0u7h7evyfxuPLHHX9eO/jXTAxIFc8B+IE=",
+    "x86_64-darwin": "sha256-vVj40al+TEeMpbe5XG2GmJEpN+eQAvtr9W0T98l5PBE="
   }
 }

package.json

@@ -71,7 +71,8 @@
       "@solidjs/router": "0.15.4",
       "@solidjs/start": "https://pkg.pr.new/@solidjs/start@dfb2020",
       "solid-js": "1.9.10",
-      "vite-plugin-solid": "2.11.10"
+      "vite-plugin-solid": "2.11.10",
+      "@lydell/node-pty": "1.2.0-beta.10"
     }
   },
   "devDependencies": {

packages/app/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/app",
-  "version": "1.4.0",
+  "version": "1.4.2",
   "description": "",
   "type": "module",
   "exports": {

packages/app/src/app.tsx

@@ -182,7 +182,6 @@ function ConnectionGate(props: ParentProps<{ disableHealthCheck?: boolean }>) {
             if (checkMode() === "background" || type === "http") return false
           }
         }).pipe(
-          effectMinDuration(checkMode() === "blocking" ? "1.2 seconds" : 0),
           Effect.timeoutOrElse({ duration: "10 seconds", orElse: () => Effect.succeed(false) }),
           Effect.ensuring(Effect.sync(() => setCheckMode("background"))),
           Effect.runPromise,

packages/app/src/components/terminal.tsx

@@ -174,6 +174,7 @@ export const Terminal = (props: TerminalProps) => {
   const auth = server.current?.http
   const username = auth?.username ?? "opencode"
   const password = auth?.password ?? ""
+  const sameOrigin = new URL(url, location.href).origin === location.origin
   let container!: HTMLDivElement
   const [local, others] = splitProps(props, ["pty", "class", "classList", "autoFocus", "onConnect", "onConnectError"])
   const id = local.pty.id
@@ -519,8 +520,12 @@ export const Terminal = (props: TerminalProps) => {
         next.searchParams.set("directory", directory)
         next.searchParams.set("cursor", String(seek))
         next.protocol = next.protocol === "https:" ? "wss:" : "ws:"
-        next.username = username
-        next.password = password
+        if (!sameOrigin && password) {
+          next.searchParams.set("auth_token", btoa(`${username}:${password}`))
+          // For same-origin requests, let the browser reuse the page's existing auth.
+          next.username = username
+          next.password = password
+        }
 
         const socket = new WebSocket(next)
         socket.binaryType = "arraybuffer"

packages/app/src/context/global-sync/event-reducer.ts

@@ -14,6 +14,7 @@ import type {
 import type { State, VcsCache } from "./types"
 import { trimSessions } from "./session-trim"
 import { dropSessionCaches } from "./session-cache"
+import { diffs as list, message as clean } from "@/utils/diffs"
 
 const SKIP_PARTS = new Set(["patch", "step-start", "step-finish"])
 
@@ -162,7 +163,7 @@ export function applyDirectoryEvent(input: {
     }
     case "session.diff": {
       const props = event.properties as { sessionID: string; diff: SnapshotFileDiff[] }
-      input.setStore("session_diff", props.sessionID, reconcile(props.diff, { key: "file" }))
+      input.setStore("session_diff", props.sessionID, reconcile(list(props.diff), { key: "file" }))
       break
     }
     case "todo.updated": {
@@ -177,7 +178,7 @@ export function applyDirectoryEvent(input: {
       break
     }
     case "message.updated": {
-      const info = (event.properties as { info: Message }).info
+      const info = clean((event.properties as { info: Message }).info)
       const messages = input.store.message[info.sessionID]
       if (!messages) {
         input.setStore("message", info.sessionID, [info])

packages/app/src/context/sync.tsx

@@ -13,6 +13,7 @@ import { useGlobalSync } from "./global-sync"
 import { useSDK } from "./sdk"
 import type { Message, Part } from "@opencode-ai/sdk/v2/client"
 import { SESSION_CACHE_LIMIT, dropSessionCaches, pickSessionCacheEvictions } from "./global-sync/session-cache"
+import { diffs as list, message as clean } from "@/utils/diffs"
 
 const SKIP_PARTS = new Set(["patch", "step-start", "step-finish"])
 
@@ -300,7 +301,7 @@ export const { use: useSync, provider: SyncProvider } = createSimpleContext({
         input.client.session.messages({ sessionID: input.sessionID, limit: input.limit, before: input.before }),
       )
       const items = (messages.data ?? []).filter((x) => !!x?.info?.id)
-      const session = items.map((x) => x.info).sort((a, b) => cmp(a.id, b.id))
+      const session = items.map((x) => clean(x.info)).sort((a, b) => cmp(a.id, b.id))
       const part = items.map((message) => ({ id: message.info.id, part: sortParts(message.parts) }))
       const cursor = messages.response.headers.get("x-next-cursor") ?? undefined
       return {
@@ -509,7 +510,7 @@ export const { use: useSync, provider: SyncProvider } = createSimpleContext({
           return runInflight(inflightDiff, key, () =>
             retry(() => client.session.diff({ sessionID })).then((diff) => {
               if (!tracked(directory, sessionID)) return
-              setStore("session_diff", sessionID, reconcile(diff.data ?? [], { key: "file" }))
+              setStore("session_diff", sessionID, reconcile(list(diff.data), { key: "file" }))
             }),
           )
         },

packages/app/src/pages/session.tsx

@@ -58,6 +58,7 @@ import { TerminalPanel } from "@/pages/session/terminal-panel"
 import { useSessionCommands } from "@/pages/session/use-session-commands"
 import { useSessionHashScroll } from "@/pages/session/use-session-hash-scroll"
 import { Identifier } from "@/utils/id"
+import { diffs as list } from "@/utils/diffs"
 import { Persist, persisted } from "@/utils/persist"
 import { extractPromptFromParts } from "@/utils/prompt"
 import { same } from "@/utils/same"
@@ -430,7 +431,7 @@ export default function Page() {
 
   const info = createMemo(() => (params.id ? sync.session.get(params.id) : undefined))
   const isChildSession = createMemo(() => !!info()?.parentID)
-  const diffs = createMemo(() => (params.id ? (sync.data.session_diff[params.id] ?? []) : []))
+  const diffs = createMemo(() => (params.id ? list(sync.data.session_diff[params.id]) : []))
   const sessionCount = createMemo(() => Math.max(info()?.summary?.files ?? 0, diffs().length))
   const hasSessionReview = createMemo(() => sessionCount() > 0)
   const canReview = createMemo(() => !!sync.project)
@@ -611,7 +612,7 @@ export default function Page() {
       .diff({ mode })
       .then((result) => {
         if (vcsRun.get(mode) !== run) return
-        setVcs("diff", mode, result.data ?? [])
+        setVcs("diff", mode, list(result.data))
         setVcs("ready", mode, true)
       })
       .catch((error) => {
@@ -649,7 +650,7 @@ export default function Page() {
     return open
   }, desktopReviewOpen())
 
-  const turnDiffs = createMemo(() => lastUserMessage()?.summary?.diffs ?? [])
+  const turnDiffs = createMemo(() => list(lastUserMessage()?.summary?.diffs))
   const nogit = createMemo(() => !!sync.project && sync.project.vcs !== "git")
   const changesOptions = createMemo<ChangeMode[]>(() => {
     const list: ChangeMode[] = []
@@ -669,15 +670,11 @@ export default function Page() {
     if (store.changes === "git" || store.changes === "branch") return store.changes
   })
   const reviewDiffs = createMemo(() => {
-    if (store.changes === "git") return vcs.diff.git
-    if (store.changes === "branch") return vcs.diff.branch
+    if (store.changes === "git") return list(vcs.diff.git)
+    if (store.changes === "branch") return list(vcs.diff.branch)
     return turnDiffs()
   })
-  const reviewCount = createMemo(() => {
-    if (store.changes === "git") return vcs.diff.git.length
-    if (store.changes === "branch") return vcs.diff.branch.length
-    return turnDiffs().length
-  })
+  const reviewCount = createMemo(() => reviewDiffs().length)
   const hasReview = createMemo(() => reviewCount() > 0)
   const reviewReady = createMemo(() => {
     if (store.changes === "git") return vcs.ready.git

packages/app/src/utils/diffs.test.ts

@@ -0,0 +1,74 @@
+import { describe, expect, test } from "bun:test"
+import type { SnapshotFileDiff } from "@opencode-ai/sdk/v2"
+import type { Message } from "@opencode-ai/sdk/v2/client"
+import { diffs, message } from "./diffs"
+
+const item = {
+  file: "src/app.ts",
+  patch: "@@ -1 +1 @@\n-old\n+new\n",
+  additions: 1,
+  deletions: 1,
+  status: "modified",
+} satisfies SnapshotFileDiff
+
+describe("diffs", () => {
+  test("keeps valid arrays", () => {
+    expect(diffs([item])).toEqual([item])
+  })
+
+  test("wraps a single diff object", () => {
+    expect(diffs(item)).toEqual([item])
+  })
+
+  test("reads keyed diff objects", () => {
+    expect(diffs({ a: item })).toEqual([item])
+  })
+
+  test("drops invalid entries", () => {
+    expect(
+      diffs([
+        item,
+        { file: "src/bad.ts", additions: 1, deletions: 1 },
+        { patch: item.patch, additions: 1, deletions: 1 },
+      ]),
+    ).toEqual([item])
+  })
+})
+
+describe("message", () => {
+  test("normalizes user summaries with object diffs", () => {
+    const input = {
+      id: "msg_1",
+      sessionID: "ses_1",
+      role: "user",
+      time: { created: 1 },
+      agent: "build",
+      model: { providerID: "openai", modelID: "gpt-5" },
+      summary: {
+        title: "Edit",
+        diffs: { a: item },
+      },
+    } as unknown as Message
+
+    expect(message(input)).toMatchObject({
+      summary: {
+        title: "Edit",
+        diffs: [item],
+      },
+    })
+  })
+
+  test("drops invalid user summaries", () => {
+    const input = {
+      id: "msg_1",
+      sessionID: "ses_1",
+      role: "user",
+      time: { created: 1 },
+      agent: "build",
+      model: { providerID: "openai", modelID: "gpt-5" },
+      summary: true,
+    } as unknown as Message
+
+    expect(message(input)).toMatchObject({ summary: undefined })
+  })
+})

packages/app/src/utils/diffs.ts

@@ -0,0 +1,49 @@
+import type { SnapshotFileDiff, VcsFileDiff } from "@opencode-ai/sdk/v2"
+import type { Message } from "@opencode-ai/sdk/v2/client"
+
+type Diff = SnapshotFileDiff | VcsFileDiff
+
+function diff(value: unknown): value is Diff {
+  if (!value || typeof value !== "object" || Array.isArray(value)) return false
+  if (!("file" in value) || typeof value.file !== "string") return false
+  if (!("patch" in value) || typeof value.patch !== "string") return false
+  if (!("additions" in value) || typeof value.additions !== "number") return false
+  if (!("deletions" in value) || typeof value.deletions !== "number") return false
+  if (!("status" in value) || value.status === undefined) return true
+  return value.status === "added" || value.status === "deleted" || value.status === "modified"
+}
+
+function object(value: unknown): value is Record<string, unknown> {
+  return !!value && typeof value === "object" && !Array.isArray(value)
+}
+
+export function diffs(value: unknown): Diff[] {
+  if (Array.isArray(value) && value.every(diff)) return value
+  if (Array.isArray(value)) return value.filter(diff)
+  if (diff(value)) return [value]
+  if (!object(value)) return []
+  return Object.values(value).filter(diff)
+}
+
+export function message(value: Message): Message {
+  if (value.role !== "user") return value
+
+  const raw = value.summary as unknown
+  if (raw === undefined) return value
+  if (!object(raw)) return { ...value, summary: undefined }
+
+  const title = typeof raw.title === "string" ? raw.title : undefined
+  const body = typeof raw.body === "string" ? raw.body : undefined
+  const next = diffs(raw.diffs)
+
+  if (title === raw.title && body === raw.body && next === raw.diffs) return value
+
+  return {
+    ...value,
+    summary: {
+      ...(title === undefined ? {} : { title }),
+      ...(body === undefined ? {} : { body }),
+      diffs: next,
+    },
+  }
+}

packages/console/app/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/console-app",
-  "version": "1.4.0",
+  "version": "1.4.2",
   "type": "module",
   "license": "MIT",
   "scripts": {

packages/console/core/package.json

@@ -1,7 +1,7 @@
 {
   "$schema": "https://json.schemastore.org/package.json",
   "name": "@opencode-ai/console-core",
-  "version": "1.4.0",
+  "version": "1.4.2",
   "private": true,
   "type": "module",
   "license": "MIT",

packages/console/function/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/console-function",
-  "version": "1.4.0",
+  "version": "1.4.2",
   "$schema": "https://json.schemastore.org/package.json",
   "private": true,
   "type": "module",

packages/console/mail/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/console-mail",
-  "version": "1.4.0",
+  "version": "1.4.2",
   "dependencies": {
     "@jsx-email/all": "2.2.3",
     "@jsx-email/cli": "1.4.3",

packages/desktop-electron/electron-builder.config.ts

@@ -34,11 +34,6 @@ const getBase = (): Configuration => ({
   },
   files: ["out/**/*", "resources/**/*"],
   extraResources: [
-    {
-      from: "resources/",
-      to: "",
-      filter: ["opencode-cli*"],
-    },
     {
       from: "native/",
       to: "native/",

packages/desktop-electron/electron.vite.config.ts

@@ -1,5 +1,6 @@
 import { defineConfig } from "electron-vite"
 import appPlugin from "@opencode-ai/app/vite"
+import * as fs from "node:fs/promises"
 
 const channel = (() => {
   const raw = process.env.OPENCODE_CHANNEL
@@ -7,6 +8,10 @@ const channel = (() => {
   return "dev"
 })()
 
+const OPENCODE_SERVER_DIST = "../opencode/dist/node"
+
+const nodePtyPkg = `@lydell/node-pty-${process.platform}-${process.arch}`
+
 export default defineConfig({
   main: {
     define: {
@@ -16,7 +21,33 @@ export default defineConfig({
       rollupOptions: {
         input: { index: "src/main/index.ts" },
       },
+      externalizeDeps: { include: [nodePtyPkg] },
     },
+    plugins: [
+      {
+        name: "opencode:node-pty-narrower",
+        enforce: "pre",
+        resolveId(s) {
+          if (s === "@lydell/node-pty") return nodePtyPkg
+        },
+      },
+      {
+        name: "opencode:virtual-server-module",
+        enforce: "pre",
+        resolveId(id) {
+          if (id === "virtual:opencode-server") return this.resolve(`${OPENCODE_SERVER_DIST}/node.js`)
+        },
+      },
+      {
+        name: "opencode:copy-server-assets",
+        async writeBundle() {
+          for (const l of await fs.readdir(OPENCODE_SERVER_DIST)) {
+            if (!l.endsWith(".wasm")) continue
+            await fs.writeFile(`./out/main/chunks/${l}`, await fs.readFile(`${OPENCODE_SERVER_DIST}/${l}`))
+          }
+        },
+      },
+    ],
   },
   preload: {
     build: {

packages/desktop-electron/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@opencode-ai/desktop-electron",
   "private": true,
-  "version": "1.4.0",
+  "version": "1.4.2",
   "type": "module",
   "license": "MIT",
   "homepage": "https://opencode.ai",
@@ -13,7 +13,7 @@
     "typecheck": "tsgo -b",
     "predev": "bun ./scripts/predev.ts",
     "dev": "electron-vite dev",
-    "prebuild": "bun ./scripts/copy-icons.ts",
+    "prebuild": "bun ./scripts/prebuild.ts",
     "build": "electron-vite build",
     "preview": "electron-vite preview",
     "package": "electron-builder --config electron-builder.config.ts",
@@ -24,31 +24,42 @@
   },
   "main": "./out/main/index.js",
   "dependencies": {
-    "@opencode-ai/app": "workspace:*",
-    "@opencode-ai/ui": "workspace:*",
-    "@solid-primitives/i18n": "2.2.1",
-    "@solid-primitives/storage": "catalog:",
-    "@solidjs/meta": "catalog:",
-    "@solidjs/router": "0.15.4",
     "effect": "catalog:",
     "electron-context-menu": "4.1.2",
     "electron-log": "^5",
     "electron-store": "^10",
     "electron-updater": "^6",
     "electron-window-state": "^5.0.3",
-    "marked": "^15",
-    "solid-js": "catalog:",
-    "tree-kill": "^1.2.2"
+    "marked": "^15"
   },
   "devDependencies": {
     "@actions/artifact": "4.0.0",
+    "@lydell/node-pty": "catalog:",
+    "@opencode-ai/app": "workspace:*",
+    "@opencode-ai/ui": "workspace:*",
+    "@solid-primitives/i18n": "2.2.1",
+    "@solid-primitives/storage": "catalog:",
+    "@solidjs/meta": "catalog:",
+    "@solidjs/router": "0.15.4",
     "@types/bun": "catalog:",
     "@types/node": "catalog:",
     "@typescript/native-preview": "catalog:",
+    "@valibot/to-json-schema": "1.6.0",
     "electron": "40.4.1",
     "electron-builder": "^26",
     "electron-vite": "^5",
+    "solid-js": "catalog:",
+    "sury": "11.0.0-alpha.4",
     "typescript": "~5.6.2",
-    "vite": "catalog:"
+    "vite": "catalog:",
+    "zod-openapi": "5.4.6"
+  },
+  "optionalDependencies": {
+    "@lydell/node-pty-darwin-arm64": "1.2.0-beta.10",
+    "@lydell/node-pty-darwin-x64": "1.2.0-beta.10",
+    "@lydell/node-pty-linux-arm64": "1.2.0-beta.10",
+    "@lydell/node-pty-linux-x64": "1.2.0-beta.10",
+    "@lydell/node-pty-win32-arm64": "1.2.0-beta.10",
+    "@lydell/node-pty-win32-x64": "1.2.0-beta.10"
   }
 }

packages/desktop-electron/scripts/prebuild.ts

@@ -0,0 +1,9 @@
+#!/usr/bin/env bun
+import { $ } from "bun"
+
+import { resolveChannel } from "./utils"
+
+const channel = resolveChannel()
+await $`bun ./scripts/copy-icons.ts ${channel}`
+
+await $`cd ../opencode && bun script/build-node.ts`

packages/desktop-electron/scripts/predev.ts

@@ -1,17 +1,5 @@
 import { $ } from "bun"
 
-import { copyBinaryToSidecarFolder, getCurrentSidecar, windowsify } from "./utils"
-
 await $`bun ./scripts/copy-icons.ts ${process.env.OPENCODE_CHANNEL ?? "dev"}`
 
-const RUST_TARGET = Bun.env.RUST_TARGET
-
-const sidecarConfig = getCurrentSidecar(RUST_TARGET)
-
-const binaryPath = windowsify(`../opencode/dist/${sidecarConfig.ocBinary}/bin/opencode`)
-
-await (sidecarConfig.ocBinary.includes("-baseline")
-  ? $`cd ../opencode && bun run build --single --baseline`
-  : $`cd ../opencode && bun run build --single`)
-
-await copyBinaryToSidecarFolder(binaryPath, RUST_TARGET)
+await $`cd ../opencode && bun script/build-node.ts`

packages/desktop-electron/scripts/prepare.ts

@@ -1,25 +1,9 @@
 #!/usr/bin/env bun
-import { $ } from "bun"
-
 import { Script } from "@opencode-ai/script"
-import { copyBinaryToSidecarFolder, getCurrentSidecar, resolveChannel, windowsify } from "./utils"
 
-const channel = resolveChannel()
-await $`bun ./scripts/copy-icons.ts ${channel}`
+await import("./prebuild")
 
 const pkg = await Bun.file("./package.json").json()
 pkg.version = Script.version
 await Bun.write("./package.json", JSON.stringify(pkg, null, 2) + "\n")
 console.log(`Updated package.json version to ${Script.version}`)
-
-const sidecarConfig = getCurrentSidecar()
-const artifact = process.env.OPENCODE_CLI_ARTIFACT ?? "opencode-cli"
-
-const dir = "resources/opencode-binaries"
-
-await $`mkdir -p ${dir}`
-await $`gh run download ${process.env.GITHUB_RUN_ID} -n ${artifact}`.cwd(dir)
-
-await copyBinaryToSidecarFolder(windowsify(`${dir}/${sidecarConfig.ocBinary}/bin/opencode`))
-
-await $`rm -rf ${dir}`

packages/desktop-electron/src/main/cli.ts

@@ -1,283 +0,0 @@
-import { execFileSync, spawn } from "node:child_process"
-import { EventEmitter } from "node:events"
-import { chmodSync, readFileSync, unlinkSync, writeFileSync } from "node:fs"
-import { tmpdir } from "node:os"
-import { dirname, join } from "node:path"
-import readline from "node:readline"
-import { fileURLToPath } from "node:url"
-import { app } from "electron"
-import treeKill from "tree-kill"
-
-import { WSL_ENABLED_KEY } from "./constants"
-import { getUserShell, loadShellEnv, mergeShellEnv } from "./shell-env"
-import { store } from "./store"
-
-const CLI_INSTALL_DIR = ".opencode/bin"
-const CLI_BINARY_NAME = "opencode"
-
-export type ServerConfig = {
-  hostname?: string
-  port?: number
-}
-
-export type Config = {
-  server?: ServerConfig
-}
-
-export type TerminatedPayload = { code: number | null; signal: number | null }
-
-export type CommandEvent =
-  | { type: "stdout"; value: string }
-  | { type: "stderr"; value: string }
-  | { type: "error"; value: string }
-  | { type: "terminated"; value: TerminatedPayload }
-  | { type: "sqlite"; value: SqliteMigrationProgress }
-
-export type SqliteMigrationProgress = { type: "InProgress"; value: number } | { type: "Done" }
-
-export type CommandChild = {
-  pid: number | undefined
-  kill: () => void
-}
-
-const root = dirname(fileURLToPath(import.meta.url))
-
-export function getSidecarPath() {
-  const suffix = process.platform === "win32" ? ".exe" : ""
-  const path = app.isPackaged
-    ? join(process.resourcesPath, `opencode-cli${suffix}`)
-    : join(root, "../../resources", `opencode-cli${suffix}`)
-  console.log(`[cli] Sidecar path resolved: ${path} (isPackaged: ${app.isPackaged})`)
-  return path
-}
-
-export async function getConfig(): Promise<Config | null> {
-  const { events } = spawnCommand("debug config", {})
-  let output = ""
-
-  await new Promise<void>((resolve) => {
-    events.on("stdout", (line: string) => {
-      output += line
-    })
-    events.on("stderr", (line: string) => {
-      output += line
-    })
-    events.on("terminated", () => resolve())
-    events.on("error", () => resolve())
-  })
-
-  try {
-    return JSON.parse(output) as Config
-  } catch {
-    return null
-  }
-}
-
-export async function installCli(): Promise<string> {
-  if (process.platform === "win32") {
-    throw new Error("CLI installation is only supported on macOS & Linux")
-  }
-
-  const sidecar = getSidecarPath()
-  const scriptPath = join(app.getAppPath(), "install")
-  const script = readFileSync(scriptPath, "utf8")
-  const tempScript = join(tmpdir(), "opencode-install.sh")
-
-  writeFileSync(tempScript, script, "utf8")
-  chmodSync(tempScript, 0o755)
-
-  const cmd = spawn(tempScript, ["--binary", sidecar], { stdio: "pipe" })
-  return await new Promise<string>((resolve, reject) => {
-    cmd.on("exit", (code: number | null) => {
-      try {
-        unlinkSync(tempScript)
-      } catch {}
-      if (code === 0) {
-        const installPath = getCliInstallPath()
-        if (installPath) return resolve(installPath)
-        return reject(new Error("Could not determine install path"))
-      }
-      reject(new Error("Install script failed"))
-    })
-  })
-}
-
-export function syncCli() {
-  if (!app.isPackaged) return
-  const installPath = getCliInstallPath()
-  if (!installPath) return
-
-  let version = ""
-  try {
-    version = execFileSync(installPath, ["--version"], { windowsHide: true }).toString().trim()
-  } catch {
-    return
-  }
-
-  const cli = parseVersion(version)
-  const appVersion = parseVersion(app.getVersion())
-  if (!cli || !appVersion) return
-  if (compareVersions(cli, appVersion) >= 0) return
-  void installCli().catch(() => undefined)
-}
-
-export function serve(hostname: string, port: number, password: string) {
-  const args = `--print-logs --log-level WARN serve --hostname ${hostname} --port ${port}`
-  const env = {
-    OPENCODE_SERVER_USERNAME: "opencode",
-    OPENCODE_SERVER_PASSWORD: password,
-  }
-
-  return spawnCommand(args, env)
-}
-
-export function spawnCommand(args: string, extraEnv: Record<string, string>) {
-  console.log(`[cli] Spawning command with args: ${args}`)
-  const base = Object.fromEntries(
-    Object.entries(process.env).filter((entry): entry is [string, string] => typeof entry[1] === "string"),
-  )
-  const env = {
-    ...base,
-    OPENCODE_EXPERIMENTAL_ICON_DISCOVERY: "true",
-    OPENCODE_EXPERIMENTAL_FILEWATCHER: "true",
-    OPENCODE_CLIENT: "desktop",
-    XDG_STATE_HOME: app.getPath("userData"),
-    ...extraEnv,
-  }
-  const shell = process.platform === "win32" ? null : getUserShell()
-  const envs = shell ? mergeShellEnv(loadShellEnv(shell), env) : env
-
-  const { cmd, cmdArgs } = buildCommand(args, envs, shell)
-  console.log(`[cli] Executing: ${cmd} ${cmdArgs.join(" ")}`)
-  const child = spawn(cmd, cmdArgs, {
-    env: envs,
-    detached: process.platform !== "win32",
-    windowsHide: true,
-    stdio: ["ignore", "pipe", "pipe"],
-  })
-  console.log(`[cli] Spawned process with PID: ${child.pid}`)
-
-  const events = new EventEmitter()
-  const exit = new Promise<TerminatedPayload>((resolve) => {
-    child.on("exit", (code: number | null, signal: NodeJS.Signals | null) => {
-      console.log(`[cli] Process exited with code: ${code}, signal: ${signal}`)
-      resolve({ code: code ?? null, signal: null })
-    })
-    child.on("error", (error: Error) => {
-      console.error(`[cli] Process error: ${error.message}`)
-      events.emit("error", error.message)
-    })
-  })
-
-  const stdout = child.stdout
-  const stderr = child.stderr
-
-  if (stdout) {
-    readline.createInterface({ input: stdout }).on("line", (line: string) => {
-      if (handleSqliteProgress(events, line)) return
-      events.emit("stdout", `${line}\n`)
-    })
-  }
-
-  if (stderr) {
-    readline.createInterface({ input: stderr }).on("line", (line: string) => {
-      if (handleSqliteProgress(events, line)) return
-      events.emit("stderr", `${line}\n`)
-    })
-  }
-
-  exit.then((payload) => {
-    events.emit("terminated", payload)
-  })
-
-  const kill = () => {
-    if (!child.pid) return
-    treeKill(child.pid)
-  }
-
-  return { events, child: { pid: child.pid, kill }, exit }
-}
-
-function handleSqliteProgress(events: EventEmitter, line: string) {
-  const stripped = line.startsWith("sqlite-migration:") ? line.slice("sqlite-migration:".length).trim() : null
-  if (!stripped) return false
-  if (stripped === "done") {
-    events.emit("sqlite", { type: "Done" })
-    return true
-  }
-  const value = Number.parseInt(stripped, 10)
-  if (!Number.isNaN(value)) {
-    events.emit("sqlite", { type: "InProgress", value })
-    return true
-  }
-  return false
-}
-
-function buildCommand(args: string, env: Record<string, string>, shell: string | null) {
-  if (process.platform === "win32" && isWslEnabled()) {
-    console.log(`[cli] Using WSL mode`)
-    const version = app.getVersion()
-    const script = [
-      "set -e",
-      'BIN="$HOME/.opencode/bin/opencode"',
-      'if [ ! -x "$BIN" ]; then',
-      `  curl -fsSL https://opencode.ai/install | bash -s -- --version ${shellEscape(version)} --no-modify-path`,
-      "fi",
-      `${envPrefix(env)} exec "$BIN" ${args}`,
-    ].join("\n")
-
-    return { cmd: "wsl", cmdArgs: ["-e", "bash", "-lc", script] }
-  }
-
-  if (process.platform === "win32") {
-    const sidecar = getSidecarPath()
-    console.log(`[cli] Windows direct mode, sidecar: ${sidecar}`)
-    return { cmd: sidecar, cmdArgs: args.split(" ") }
-  }
-
-  const sidecar = getSidecarPath()
-  const user = shell || getUserShell()
-  const line = user.endsWith("/nu") ? `^\"${sidecar}\" ${args}` : `\"${sidecar}\" ${args}`
-  console.log(`[cli] Unix mode, shell: ${user}, command: ${line}`)
-  return { cmd: user, cmdArgs: ["-l", "-c", line] }
-}
-
-function envPrefix(env: Record<string, string>) {
-  const entries = Object.entries(env).map(([key, value]) => `${key}=${shellEscape(value)}`)
-  return entries.join(" ")
-}
-
-function shellEscape(input: string) {
-  if (!input) return "''"
-  return `'${input.replace(/'/g, `'"'"'`)}'`
-}
-
-function getCliInstallPath() {
-  const home = process.env.HOME
-  if (!home) return null
-  return join(home, CLI_INSTALL_DIR, CLI_BINARY_NAME)
-}
-
-function isWslEnabled() {
-  return store.get(WSL_ENABLED_KEY) === true
-}
-
-function parseVersion(value: string) {
-  const parts = value
-    .replace(/^v/, "")
-    .split(".")
-    .map((part) => Number.parseInt(part, 10))
-  if (parts.some((part) => Number.isNaN(part))) return null
-  return parts
-}
-
-function compareVersions(a: number[], b: number[]) {
-  const len = Math.max(a.length, b.length)
-  for (let i = 0; i < len; i += 1) {
-    const left = a[i] ?? 0
-    const right = b[i] ?? 0
-    if (left > right) return 1
-    if (left < right) return -1
-  }
-  return 0
-}

packages/desktop-electron/src/main/env.d.ts

@@ -5,3 +5,25 @@ interface ImportMetaEnv {
 interface ImportMeta {
   readonly env: ImportMetaEnv
 }
+declare module "virtual:opencode-server" {
+  export namespace Server {
+    export const listen: typeof import("../../../opencode/dist/types/src/node").Server.listen
+    export type Listener = import("../../../opencode/dist/types/src/node").Server.Listener
+  }
+  export namespace Config {
+    export const get: typeof import("../../../opencode/dist/types/src/node").Config.get
+    export type Info = import("../../../opencode/dist/types/src/node").Config.Info
+  }
+  export namespace Log {
+    export const init: typeof import("../../../opencode/dist/types/src/node").Log.init
+  }
+  export namespace Database {
+    export const Path: typeof import("../../../opencode/dist/types/src/node").Database.Path
+    export const Client: typeof import("../../../opencode/dist/types/src/node").Database.Client
+  }
+  export namespace JsonMigration {
+    export type Progress = import("../../../opencode/dist/types/src/node").JsonMigration.Progress
+    export const run: typeof import("../../../opencode/dist/types/src/node").JsonMigration.run
+  }
+  export const bootstrap: typeof import("../../../opencode/dist/types/src/node").bootstrap
+}

packages/desktop-electron/src/main/index.ts

@@ -11,6 +11,8 @@ import pkg from "electron-updater"
 import contextMenu from "electron-context-menu"
 contextMenu({ showSaveImageAs: true, showLookUpSelection: false, showSearchWithGoogle: false })
 
+process.env.OPENCODE_DISABLE_EMBEDDED_WEB_UI = "true"
+
 const APP_NAMES: Record<string, string> = {
   dev: "OpenCode Dev",
   beta: "OpenCode Beta",
@@ -27,8 +29,6 @@ const { autoUpdater } = pkg
 
 import type { InitStep, ServerReadyData, SqliteMigrationProgress, WslConfig } from "../preload/types"
 import { checkAppExists, resolveAppPath, wslPath } from "./apps"
-import type { CommandChild } from "./cli"
-import { installCli, syncCli } from "./cli"
 import { CHANNEL, UPDATER_ENABLED } from "./constants"
 import { registerIpcHandlers, sendDeepLinks, sendMenuCommand, sendSqliteMigrationProgress } from "./ipc"
 import { initLogging } from "./logging"
@@ -36,12 +36,13 @@ import { parseMarkdown } from "./markdown"
 import { createMenu } from "./menu"
 import { getDefaultServerUrl, getWslConfig, setDefaultServerUrl, setWslConfig, spawnLocalServer } from "./server"
 import { createLoadingWindow, createMainWindow, setBackgroundColor, setDockIcon } from "./windows"
+import type { Server } from "virtual:opencode-server"
 
 const initEmitter = new EventEmitter()
 let initStep: InitStep = { phase: "server_waiting" }
 
 let mainWindow: BrowserWindow | null = null
-let sidecar: CommandChild | null = null
+let server: Server.Listener | null = null
 const loadingComplete = defer<void>()
 
 const pendingDeepLinks: string[] = []
@@ -96,11 +97,9 @@ function setupApp() {
   }
 
   void app.whenReady().then(async () => {
-    // migrate()
     app.setAsDefaultProtocolClient("opencode")
     setDockIcon()
     setupAutoUpdater()
-    syncCli()
     await initialize()
   })
 }
@@ -134,8 +133,8 @@ async function initialize() {
   const password = randomUUID()
 
   logger.log("spawning sidecar", { url })
-  const { child, health, events } = spawnLocalServer(hostname, port, password)
-  sidecar = child
+  const { listener, health } = await spawnLocalServer(hostname, port, password)
+  server = listener
   serverReady.resolve({
     url,
     username: "opencode",
@@ -145,7 +144,7 @@ async function initialize() {
   const loadingTask = (async () => {
     logger.log("sidecar connection started", { url })
 
-    events.on("sqlite", (progress: SqliteMigrationProgress) => {
+    initEmitter.on("sqlite", (progress: SqliteMigrationProgress) => {
       setInitStep({ phase: "sqlite_waiting" })
       if (overlay) sendSqliteMigrationProgress(overlay, progress)
       if (mainWindow) sendSqliteMigrationProgress(mainWindow, progress)
@@ -198,9 +197,6 @@ function wireMenu() {
   if (!mainWindow) return
   createMenu({
     trigger: (id) => mainWindow && sendMenuCommand(mainWindow, id),
-    installCli: () => {
-      void installCli()
-    },
     checkForUpdates: () => {
       void checkForUpdates(true)
     },
@@ -215,7 +211,6 @@ function wireMenu() {
 
 registerIpcHandlers({
   killSidecar: () => killSidecar(),
-  installCli: async () => installCli(),
   awaitInitialization: async (sendStep) => {
     sendStep(initStep)
     const listener = (step: InitStep) => sendStep(step)
@@ -247,16 +242,9 @@ registerIpcHandlers({
 })
 
 function killSidecar() {
-  if (!sidecar) return
-  const pid = sidecar.pid
-  sidecar.kill()
-  sidecar = null
-  // tree-kill is async; also send process group signal as immediate fallback
-  if (pid && process.platform !== "win32") {
-    try {
-      process.kill(-pid, "SIGTERM")
-    } catch {}
-  }
+  if (!server) return
+  server.stop()
+  server = null
 }
 
 function ensureLoopbackNoProxy() {

packages/desktop-electron/src/main/ipc.ts

@@ -13,7 +13,6 @@ const pickerFilters = (ext?: string[]) => {
 
 type Deps = {
   killSidecar: () => void
-  installCli: () => Promise<string>
   awaitInitialization: (sendStep: (step: InitStep) => void) => Promise<ServerReadyData>
   getDefaultServerUrl: () => Promise<string | null> | string | null
   setDefaultServerUrl: (url: string | null) => Promise<void> | void
@@ -34,7 +33,6 @@ type Deps = {
 
 export function registerIpcHandlers(deps: Deps) {
   ipcMain.handle("kill-sidecar", () => deps.killSidecar())
-  ipcMain.handle("install-cli", () => deps.installCli())
   ipcMain.handle("await-initialization", (event: IpcMainInvokeEvent) => {
     const send = (step: InitStep) => event.sender.send("init-step", step)
     return deps.awaitInitialization(send)

packages/desktop-electron/src/main/menu.ts

@@ -5,7 +5,6 @@ import { createMainWindow } from "./windows"
 
 type Deps = {
   trigger: (id: string) => void
-  installCli: () => void
   checkForUpdates: () => void
   reload: () => void
   relaunch: () => void
@@ -24,10 +23,6 @@ export function createMenu(deps: Deps) {
           enabled: UPDATER_ENABLED,
           click: () => deps.checkForUpdates(),
         },
-        {
-          label: "Install CLI...",
-          click: () => deps.installCli(),
-        },
         {
           label: "Reload Webview",
           click: () => deps.reload(),

packages/desktop-electron/src/main/server.ts

@@ -1,5 +1,6 @@
-import { serve, type CommandChild } from "./cli"
+import { app } from "electron"
 import { DEFAULT_SERVER_URL_KEY, WSL_ENABLED_KEY } from "./constants"
+import { getUserShell, loadShellEnv } from "./shell-env"
 import { store } from "./store"
 
 export type WslConfig = { enabled: boolean }
@@ -29,8 +30,16 @@ export function setWslConfig(config: WslConfig) {
   store.set(WSL_ENABLED_KEY, config.enabled)
 }
 
-export function spawnLocalServer(hostname: string, port: number, password: string) {
-  const { child, exit, events } = serve(hostname, port, password)
+export async function spawnLocalServer(hostname: string, port: number, password: string) {
+  prepareServerEnv(password)
+  const { Log, Server } = await import("virtual:opencode-server")
+  await Log.init({ level: "WARN" })
+  const listener = await Server.listen({
+    port,
+    hostname,
+    username: "opencode",
+    password,
+  })
 
   const wait = (async () => {
     const url = `http://${hostname}:${port}`
@@ -42,19 +51,26 @@ export function spawnLocalServer(hostname: string, port: number, password: strin
       }
     }
 
-    const terminated = async () => {
-      const payload = await exit
-      throw new Error(
-        `Sidecar terminated before becoming healthy (code=${payload.code ?? "unknown"} signal=${
-          payload.signal ?? "unknown"
-        })`,
-      )
-    }
-
-    await Promise.race([ready(), terminated()])
+    await ready()
   })()
 
-  return { child, health: { wait }, events }
+  return { listener, health: { wait } }
+}
+
+function prepareServerEnv(password: string) {
+  const shell = process.platform === "win32" ? null : getUserShell()
+  const shellEnv = shell ? (loadShellEnv(shell) ?? {}) : {}
+  const env = {
+    ...process.env,
+    ...shellEnv,
+    OPENCODE_EXPERIMENTAL_ICON_DISCOVERY: "true",
+    OPENCODE_EXPERIMENTAL_FILEWATCHER: "true",
+    OPENCODE_CLIENT: "desktop",
+    OPENCODE_SERVER_USERNAME: "opencode",
+    OPENCODE_SERVER_PASSWORD: password,
+    XDG_STATE_HOME: app.getPath("userData"),
+  }
+  Object.assign(process.env, env)
 }
 
 export async function checkHealth(url: string, password?: string | null): Promise<boolean> {
@@ -82,5 +98,3 @@ export async function checkHealth(url: string, password?: string | null): Promis
     return false
   }
 }
-
-export type { CommandChild }

packages/desktop-electron/src/main/shell-env.ts

@@ -1,7 +1,7 @@
 import { spawnSync } from "node:child_process"
 import { basename } from "node:path"
 
-const SHELL_ENV_TIMEOUT = 5_000
+const TIMEOUT = 5_000
 
 type Probe = { type: "Loaded"; value: Record<string, string> } | { type: "Timeout" } | { type: "Unavailable" }
 
@@ -20,28 +20,28 @@ export function parseShellEnv(out: Buffer) {
   return env
 }
 
-function probeShellEnv(shell: string, mode: "-il" | "-l"): Probe {
+function probe(shell: string, mode: "-il" | "-l"): Probe {
   const out = spawnSync(shell, [mode, "-c", "env -0"], {
     stdio: ["ignore", "pipe", "ignore"],
-    timeout: SHELL_ENV_TIMEOUT,
+    timeout: TIMEOUT,
     windowsHide: true,
   })
 
   const err = out.error as NodeJS.ErrnoException | undefined
   if (err) {
     if (err.code === "ETIMEDOUT") return { type: "Timeout" }
-    console.log(`[cli] Shell env probe failed for ${shell} ${mode}: ${err.message}`)
+    console.log(`[server] Shell env probe failed for ${shell} ${mode}: ${err.message}`)
     return { type: "Unavailable" }
   }
 
   if (out.status !== 0) {
-    console.log(`[cli] Shell env probe exited with non-zero status for ${shell} ${mode}`)
+    console.log(`[server] Shell env probe exited with non-zero status for ${shell} ${mode}`)
     return { type: "Unavailable" }
   }
 
   const env = parseShellEnv(out.stdout)
   if (Object.keys(env).length === 0) {
-    console.log(`[cli] Shell env probe returned empty env for ${shell} ${mode}`)
+    console.log(`[server] Shell env probe returned empty env for ${shell} ${mode}`)
     return { type: "Unavailable" }
   }
 
@@ -56,27 +56,27 @@ export function isNushell(shell: string) {
 
 export function loadShellEnv(shell: string) {
   if (isNushell(shell)) {
-    console.log(`[cli] Skipping shell env probe for nushell: ${shell}`)
+    console.log(`[server] Skipping shell env probe for nushell: ${shell}`)
     return null
   }
 
-  const interactive = probeShellEnv(shell, "-il")
+  const interactive = probe(shell, "-il")
   if (interactive.type === "Loaded") {
-    console.log(`[cli] Loaded shell environment with -il (${Object.keys(interactive.value).length} vars)`)
+    console.log(`[server] Loaded shell environment with -il (${Object.keys(interactive.value).length} vars)`)
     return interactive.value
   }
   if (interactive.type === "Timeout") {
-    console.warn(`[cli] Interactive shell env probe timed out: ${shell}`)
+    console.warn(`[server] Interactive shell env probe timed out: ${shell}`)
     return null
   }
 
-  const login = probeShellEnv(shell, "-l")
+  const login = probe(shell, "-l")
   if (login.type === "Loaded") {
-    console.log(`[cli] Loaded shell environment with -l (${Object.keys(login.value).length} vars)`)
+    console.log(`[server] Loaded shell environment with -l (${Object.keys(login.value).length} vars)`)
     return login.value
   }
 
-  console.warn(`[cli] Falling back to app environment: ${shell}`)
+  console.warn(`[server] Falling back to app environment: ${shell}`)
   return null
 }
 

packages/desktop/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@opencode-ai/desktop",
   "private": true,
-  "version": "1.4.0",
+  "version": "1.4.2",
   "type": "module",
   "license": "MIT",
   "scripts": {

packages/enterprise/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/enterprise",
-  "version": "1.4.0",
+  "version": "1.4.2",
   "private": true,
   "type": "module",
   "license": "MIT",

packages/extensions/zed/extension.toml

@@ -1,7 +1,7 @@
 id = "opencode"
 name = "OpenCode"
 description = "The open source coding agent."
-version = "1.4.0"
+version = "1.4.2"
 schema_version = 1
 authors = ["Anomaly"]
 repository = "https://github.com/anomalyco/opencode"
@@ -11,26 +11,26 @@ name = "OpenCode"
 icon = "./icons/opencode.svg"
 
 [agent_servers.opencode.targets.darwin-aarch64]
-archive = "https://github.com/anomalyco/opencode/releases/download/v1.4.0/opencode-darwin-arm64.zip"
+archive = "https://github.com/anomalyco/opencode/releases/download/v1.4.2/opencode-darwin-arm64.zip"
 cmd = "./opencode"
 args = ["acp"]
 
 [agent_servers.opencode.targets.darwin-x86_64]
-archive = "https://github.com/anomalyco/opencode/releases/download/v1.4.0/opencode-darwin-x64.zip"
+archive = "https://github.com/anomalyco/opencode/releases/download/v1.4.2/opencode-darwin-x64.zip"
 cmd = "./opencode"
 args = ["acp"]
 
 [agent_servers.opencode.targets.linux-aarch64]
-archive = "https://github.com/anomalyco/opencode/releases/download/v1.4.0/opencode-linux-arm64.tar.gz"
+archive = "https://github.com/anomalyco/opencode/releases/download/v1.4.2/opencode-linux-arm64.tar.gz"
 cmd = "./opencode"
 args = ["acp"]
 
 [agent_servers.opencode.targets.linux-x86_64]
-archive = "https://github.com/anomalyco/opencode/releases/download/v1.4.0/opencode-linux-x64.tar.gz"
+archive = "https://github.com/anomalyco/opencode/releases/download/v1.4.2/opencode-linux-x64.tar.gz"
 cmd = "./opencode"
 args = ["acp"]
 
 [agent_servers.opencode.targets.windows-x86_64]
-archive = "https://github.com/anomalyco/opencode/releases/download/v1.4.0/opencode-windows-x64.zip"
+archive = "https://github.com/anomalyco/opencode/releases/download/v1.4.2/opencode-windows-x64.zip"
 cmd = "./opencode.exe"
 args = ["acp"]

packages/function/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/function",
-  "version": "1.4.0",
+  "version": "1.4.2",
   "$schema": "https://json.schemastore.org/package.json",
   "private": true,
   "type": "module",

packages/opencode/package.json

@@ -1,6 +1,6 @@
 {
   "$schema": "https://json.schemastore.org/package.json",
-  "version": "1.4.0",
+  "version": "1.4.2",
   "name": "opencode",
   "type": "module",
   "license": "MIT",
@@ -106,7 +106,7 @@
     "@hono/node-ws": "1.3.0",
     "@hono/standard-validator": "0.1.5",
     "@hono/zod-validator": "catalog:",
-    "@lydell/node-pty": "1.2.0-beta.10",
+    "@lydell/node-pty": "catalog:",
     "@modelcontextprotocol/sdk": "1.27.1",
     "@npmcli/arborist": "9.4.0",
     "@octokit/graphql": "9.0.2",
@@ -137,7 +137,7 @@
     "drizzle-orm": "catalog:",
     "effect": "catalog:",
     "fuzzysort": "3.1.0",
-    "gitlab-ai-provider": "6.0.0",
+    "gitlab-ai-provider": "6.4.2",
     "glob": "13.0.5",
     "google-auth-library": "10.5.0",
     "gray-matter": "4.0.3",

packages/opencode/script/build-node.ts

@@ -1,6 +1,5 @@
 #!/usr/bin/env bun
 
-import { $ } from "bun"
 import { Script } from "@opencode-ai/script"
 import fs from "fs"
 import path from "path"
@@ -9,18 +8,11 @@ import { fileURLToPath } from "url"
 const __filename = fileURLToPath(import.meta.url)
 const __dirname = path.dirname(__filename)
 const dir = path.resolve(__dirname, "..")
-const root = path.resolve(dir, "../..")
-
-function linker(): "hoisted" | "isolated" {
-  // jsonc-parser is only declared in packages/opencode, so its install location
-  // tells us whether Bun used a hoisted or isolated workspace layout.
-  if (fs.existsSync(path.join(dir, "node_modules", "jsonc-parser"))) return "isolated"
-  if (fs.existsSync(path.join(root, "node_modules", "jsonc-parser"))) return "hoisted"
-  throw new Error("Could not detect Bun linker from jsonc-parser")
-}
 
 process.chdir(dir)
 
+await import("./generate.ts")
+
 // Load migrations from migration directories
 const migrationDirs = (
   await fs.promises.readdir(path.join(dir, "migration"), {
@@ -51,21 +43,20 @@ const migrations = await Promise.all(
 )
 console.log(`Loaded ${migrations.length} migrations`)
 
-const link = linker()
-
-await $`bun install --linker=${link} --os="*" --cpu="*" @lydell/node-pty@1.2.0-beta.10`
-
 await Bun.build({
   target: "node",
   entrypoints: ["./src/node.ts"],
-  outdir: "./dist",
+  outdir: "./dist/node",
   format: "esm",
   sourcemap: "linked",
-  external: ["jsonc-parser"],
+  external: ["jsonc-parser", "@lydell/node-pty"],
   define: {
     OPENCODE_MIGRATIONS: JSON.stringify(migrations),
     OPENCODE_CHANNEL: `'${Script.channel}'`,
   },
+  files: {
+    "opencode-web-ui.gen.ts": "",
+  },
 })
 
 console.log("Build complete")

packages/opencode/script/build.ts

@@ -12,24 +12,11 @@ const dir = path.resolve(__dirname, "..")
 
 process.chdir(dir)
 
+await import("./generate.ts")
+
 import { Script } from "@opencode-ai/script"
 import pkg from "../package.json"
 
-const modelsUrl = process.env.OPENCODE_MODELS_URL || "https://models.dev"
-// Fetch and generate models.dev snapshot
-const modelsData = process.env.MODELS_DEV_API_JSON
-  ? await Bun.file(process.env.MODELS_DEV_API_JSON).text()
-  : await fetch(`${modelsUrl}/api.json`).then((x) => x.text())
-await Bun.write(
-  path.join(dir, "src/provider/models-snapshot.js"),
-  `// @ts-nocheck\n// Auto-generated by build.ts - do not edit\nexport const snapshot = ${modelsData}\n`,
-)
-await Bun.write(
-  path.join(dir, "src/provider/models-snapshot.d.ts"),
-  `// Auto-generated by build.ts - do not edit\nexport declare const snapshot: Record<string, unknown>\n`,
-)
-console.log("Generated models-snapshot.js")
-
 // Load migrations from migration directories
 const migrationDirs = (
   await fs.promises.readdir(path.join(dir, "migration"), {

packages/opencode/script/generate.ts

@@ -0,0 +1,23 @@
+import path from "path"
+import { fileURLToPath } from "url"
+
+const __filename = fileURLToPath(import.meta.url)
+const __dirname = path.dirname(__filename)
+const dir = path.resolve(__dirname, "..")
+
+process.chdir(dir)
+
+const modelsUrl = process.env.OPENCODE_MODELS_URL || "https://models.dev"
+// Fetch and generate models.dev snapshot
+const modelsData = process.env.MODELS_DEV_API_JSON
+  ? await Bun.file(process.env.MODELS_DEV_API_JSON).text()
+  : await fetch(`${modelsUrl}/api.json`).then((x) => x.text())
+await Bun.write(
+  path.join(dir, "src/provider/models-snapshot.js"),
+  `// @ts-nocheck\n// Auto-generated by build.ts - do not edit\nexport const snapshot = ${modelsData}\n`,
+)
+await Bun.write(
+  path.join(dir, "src/provider/models-snapshot.d.ts"),
+  `// Auto-generated by build.ts - do not edit\nexport declare const snapshot: Record<string, unknown>\n`,
+)
+console.log("Generated models-snapshot.js")

packages/opencode/src/account/index.ts

@@ -461,28 +461,11 @@ export namespace Account {
     return Option.getOrUndefined(await runPromise((service) => service.active()))
   }
 
-  export async function list(): Promise<Info[]> {
-    return runPromise((service) => service.list())
-  }
-
-  export async function activeOrg(): Promise<ActiveOrg | undefined> {
-    return Option.getOrUndefined(await runPromise((service) => service.activeOrg()))
-  }
-
   export async function orgsByAccount(): Promise<readonly AccountOrgs[]> {
     return runPromise((service) => service.orgsByAccount())
   }
 
-  export async function orgs(accountID: AccountID): Promise<readonly Org[]> {
-    return runPromise((service) => service.orgs(accountID))
-  }
-
   export async function switchOrg(accountID: AccountID, orgID: OrgID) {
     return runPromise((service) => service.use(accountID, Option.some(orgID)))
   }
-
-  export async function token(accountID: AccountID): Promise<AccessToken | undefined> {
-    const t = await runPromise((service) => service.token(accountID))
-    return Option.getOrUndefined(t)
-  }
 }

packages/opencode/src/agent/agent.ts

@@ -393,11 +393,13 @@ export namespace Agent {
     }),
   )
 
-  export const defaultLayer = layer.pipe(
-    Layer.provide(Provider.defaultLayer),
-    Layer.provide(Auth.defaultLayer),
-    Layer.provide(Config.defaultLayer),
-    Layer.provide(Skill.defaultLayer),
+  export const defaultLayer = Layer.suspend(() =>
+    layer.pipe(
+      Layer.provide(Provider.defaultLayer),
+      Layer.provide(Auth.defaultLayer),
+      Layer.provide(Config.defaultLayer),
+      Layer.provide(Skill.defaultLayer),
+    ),
   )
 
   const { runPromise } = makeRuntime(Service, defaultLayer)

packages/opencode/src/cli/cmd/db.ts

@@ -1,6 +1,7 @@
 import type { Argv } from "yargs"
 import { spawn } from "child_process"
 import { Database } from "../../storage/db"
+import { drizzle } from "drizzle-orm/bun-sqlite"
 import { Database as BunDatabase } from "bun:sqlite"
 import { UI } from "../ui"
 import { cmd } from "./cmd"
@@ -74,7 +75,7 @@ const MigrateCommand = cmd({
     let last = -1
     if (tty) process.stderr.write("\x1b[?25l")
     try {
-      const stats = await JsonMigration.run(sqlite, {
+      const stats = await JsonMigration.run(drizzle({ client: sqlite }), {
         progress: (event) => {
           const percent = Math.floor((event.current / event.total) * 100)
           if (percent === last) return

packages/opencode/src/cli/cmd/mcp.ts

@@ -688,6 +688,7 @@ export const McpDebugCommand = cmd({
                 clientId: oauthConfig?.clientId,
                 clientSecret: oauthConfig?.clientSecret,
                 scope: oauthConfig?.scope,
+                redirectUri: oauthConfig?.redirectUri,
               },
               {
                 onRedirect: async () => {},

packages/opencode/src/cli/cmd/run.ts

@@ -7,7 +7,7 @@ import { Flag } from "../../flag/flag"
 import { bootstrap } from "../bootstrap"
 import { EOL } from "os"
 import { Filesystem } from "../../util/filesystem"
-import { createOpencodeClient, type Message, type OpencodeClient, type ToolPart } from "@opencode-ai/sdk/v2"
+import { createOpencodeClient, type OpencodeClient, type ToolPart } from "@opencode-ai/sdk/v2"
 import { Server } from "../../server/server"
 import { Provider } from "../../provider/provider"
 import { Agent } from "../../agent/agent"
@@ -680,7 +680,7 @@ export const RunCommand = cmd({
     await bootstrap(process.cwd(), async () => {
       const fetchFn = (async (input: RequestInfo | URL, init?: RequestInit) => {
         const request = new Request(input, init)
-        return Server.Default().fetch(request)
+        return Server.Default().app.fetch(request)
       }) as typeof globalThis.fetch
       const sdk = createOpencodeClient({ baseUrl: "http://opencode.internal", fetch: fetchFn })
       await execute(sdk)

packages/opencode/src/cli/cmd/tui/component/dialog-go-upsell.tsx

@@ -0,0 +1,99 @@
+import { RGBA, TextAttributes } from "@opentui/core"
+import { useKeyboard } from "@opentui/solid"
+import open from "open"
+import { createSignal } from "solid-js"
+import { selectedForeground, useTheme } from "@tui/context/theme"
+import { useDialog, type DialogContext } from "@tui/ui/dialog"
+import { Link } from "@tui/ui/link"
+
+const GO_URL = "https://opencode.ai/go"
+
+export type DialogGoUpsellProps = {
+  onClose?: (dontShowAgain?: boolean) => void
+}
+
+function subscribe(props: DialogGoUpsellProps, dialog: ReturnType<typeof useDialog>) {
+  open(GO_URL).catch(() => {})
+  props.onClose?.()
+  dialog.clear()
+}
+
+function dismiss(props: DialogGoUpsellProps, dialog: ReturnType<typeof useDialog>) {
+  props.onClose?.(true)
+  dialog.clear()
+}
+
+export function DialogGoUpsell(props: DialogGoUpsellProps) {
+  const dialog = useDialog()
+  const { theme } = useTheme()
+  const fg = selectedForeground(theme)
+  const [selected, setSelected] = createSignal(0)
+
+  useKeyboard((evt) => {
+    if (evt.name === "left" || evt.name === "right" || evt.name === "tab") {
+      setSelected((s) => (s === 0 ? 1 : 0))
+      return
+    }
+    if (evt.name !== "return") return
+    if (selected() === 0) subscribe(props, dialog)
+    else dismiss(props, dialog)
+  })
+
+  return (
+    <box paddingLeft={2} paddingRight={2} gap={1}>
+      <box flexDirection="row" justifyContent="space-between">
+        <text attributes={TextAttributes.BOLD} fg={theme.text}>
+          Free limit reached
+        </text>
+        <text fg={theme.textMuted} onMouseUp={() => dialog.clear()}>
+          esc
+        </text>
+      </box>
+      <box gap={1} paddingBottom={1}>
+        <text fg={theme.textMuted}>
+          Subscribe to OpenCode Go to keep going with reliable access to the best open-source models, starting at
+          $5/month.
+        </text>
+        <box flexDirection="row" gap={1}>
+          <Link href={GO_URL} fg={theme.primary} />
+        </box>
+      </box>
+      <box flexDirection="row" justifyContent="flex-end" gap={1} paddingBottom={1}>
+        <box
+          paddingLeft={3}
+          paddingRight={3}
+          backgroundColor={selected() === 0 ? theme.primary : RGBA.fromInts(0, 0, 0, 0)}
+          onMouseOver={() => setSelected(0)}
+          onMouseUp={() => subscribe(props, dialog)}
+        >
+          <text fg={selected() === 0 ? fg : theme.text} attributes={selected() === 0 ? TextAttributes.BOLD : undefined}>
+            subscribe
+          </text>
+        </box>
+        <box
+          paddingLeft={3}
+          paddingRight={3}
+          backgroundColor={selected() === 1 ? theme.primary : RGBA.fromInts(0, 0, 0, 0)}
+          onMouseOver={() => setSelected(1)}
+          onMouseUp={() => dismiss(props, dialog)}
+        >
+          <text
+            fg={selected() === 1 ? fg : theme.textMuted}
+            attributes={selected() === 1 ? TextAttributes.BOLD : undefined}
+          >
+            don't show again
+          </text>
+        </box>
+      </box>
+    </box>
+  )
+}
+
+DialogGoUpsell.show = (dialog: DialogContext) => {
+  return new Promise<boolean>((resolve) => {
+    dialog.replace(
+      () => <DialogGoUpsell onClose={(dontShow) => resolve(dontShow ?? false)} />,
+      () => resolve(false),
+    )
+  })
+}

packages/opencode/src/cli/cmd/tui/routes/session/index.tsx

@@ -83,9 +83,15 @@ import { UI } from "@/cli/ui.ts"
 import { useTuiConfig } from "../../context/tui-config"
 import { getScrollAcceleration } from "../../util/scroll"
 import { TuiPluginRuntime } from "../../plugin"
+import { DialogGoUpsell } from "../../component/dialog-go-upsell"
+import { SessionRetry } from "@/session/retry"
 
 addDefaultParsers(parsers.parsers)
 
+const GO_UPSELL_LAST_SEEN_AT = "go_upsell_last_seen_at"
+const GO_UPSELL_DONT_SHOW = "go_upsell_dont_show"
+const GO_UPSELL_WINDOW = 86_400_000 // 24 hrs
+
 const context = createContext<{
   width: number
   sessionID: string
@@ -149,7 +155,7 @@ export function Session() {
   const [timestamps, setTimestamps] = kv.signal<"hide" | "show">("timestamps", "hide")
   const [showDetails, setShowDetails] = kv.signal("tool_details_visibility", true)
   const [showAssistantMetadata, setShowAssistantMetadata] = kv.signal("assistant_metadata_visibility", true)
-  const [showScrollbar, setShowScrollbar] = kv.signal("scrollbar_visible", true)
+  const [showScrollbar, setShowScrollbar] = kv.signal("scrollbar_visible", false)
   const [diffWrapMode] = kv.signal<"word" | "none">("diff_wrap_mode", "word")
   const [animationsEnabled, setAnimationsEnabled] = kv.signal("animations_enabled", true)
   const [showGenericToolOutput, setShowGenericToolOutput] = kv.signal("generic_tool_output_visibility", false)
@@ -218,6 +224,23 @@ export function Session() {
   const dialog = useDialog()
   const renderer = useRenderer()
 
+  sdk.event.on("session.status", (evt) => {
+    if (evt.properties.sessionID !== route.sessionID) return
+    if (evt.properties.status.type !== "retry") return
+    if (evt.properties.status.message !== SessionRetry.GO_UPSELL_MESSAGE) return
+    if (dialog.stack.length > 0) return
+
+    const seen = kv.get(GO_UPSELL_LAST_SEEN_AT)
+    if (typeof seen === "number" && Date.now() - seen < GO_UPSELL_WINDOW) return
+
+    if (kv.get(GO_UPSELL_DONT_SHOW)) return
+
+    DialogGoUpsell.show(dialog).then((dontShowAgain) => {
+      if (dontShowAgain) kv.set(GO_UPSELL_DONT_SHOW, true)
+      kv.set(GO_UPSELL_LAST_SEEN_AT, Date.now())
+    })
+  })
+
   // Allow exit when in child session (prompt is hidden)
   const exit = useExit()
 

packages/opencode/src/cli/cmd/tui/worker.ts

@@ -138,7 +138,7 @@ export const rpc = {
       headers,
       body: input.body,
     })
-    const response = await Server.Default().fetch(request)
+    const response = await Server.Default().app.fetch(request)
     const body = await response.text()
     return {
       status: response.status,

packages/opencode/src/config/config.ts

@@ -399,6 +399,10 @@ export namespace Config {
         .describe("OAuth client ID. If not provided, dynamic client registration (RFC 7591) will be attempted."),
       clientSecret: z.string().optional().describe("OAuth client secret (if required by the authorization server)"),
       scope: z.string().optional().describe("OAuth scopes to request during authorization"),
+      redirectUri: z
+        .string()
+        .optional()
+        .describe("OAuth redirect URI (default: http://127.0.0.1:19876/mcp/oauth/callback)."),
     })
     .strict()
     .meta({
@@ -786,28 +790,81 @@ export namespace Config {
   })
   export type Layout = z.infer<typeof Layout>
 
-  export const Provider = ModelsDev.Provider.partial()
-    .extend({
-      whitelist: z.array(z.string()).optional(),
-      blacklist: z.array(z.string()).optional(),
-      models: z
+  export const Model = z
+    .object({
+      id: z.string(),
+      name: z.string(),
+      family: z.string().optional(),
+      release_date: z.string(),
+      attachment: z.boolean(),
+      reasoning: z.boolean(),
+      temperature: z.boolean(),
+      tool_call: z.boolean(),
+      interleaved: z
+        .union([
+          z.literal(true),
+          z
+            .object({
+              field: z.enum(["reasoning_content", "reasoning_details"]),
+            })
+            .strict(),
+        ])
+        .optional(),
+      cost: z
+        .object({
+          input: z.number(),
+          output: z.number(),
+          cache_read: z.number().optional(),
+          cache_write: z.number().optional(),
+          context_over_200k: z
+            .object({
+              input: z.number(),
+              output: z.number(),
+              cache_read: z.number().optional(),
+              cache_write: z.number().optional(),
+            })
+            .optional(),
+        })
+        .optional(),
+      limit: z.object({
+        context: z.number(),
+        input: z.number().optional(),
+        output: z.number(),
+      }),
+      modalities: z
+        .object({
+          input: z.array(z.enum(["text", "audio", "image", "video", "pdf"])),
+          output: z.array(z.enum(["text", "audio", "image", "video", "pdf"])),
+        })
+        .optional(),
+      experimental: z.boolean().optional(),
+      status: z.enum(["alpha", "beta", "deprecated"]).optional(),
+      provider: z.object({ npm: z.string().optional(), api: z.string().optional() }).optional(),
+      options: z.record(z.string(), z.any()),
+      headers: z.record(z.string(), z.string()).optional(),
+      variants: z
         .record(
           z.string(),
-          ModelsDev.Model.partial().extend({
-            variants: z
-              .record(
-                z.string(),
-                z
-                  .object({
-                    disabled: z.boolean().optional().describe("Disable this variant for the model"),
-                  })
-                  .catchall(z.any()),
-              )
-              .optional()
-              .describe("Variant-specific configuration"),
-          }),
+          z
+            .object({
+              disabled: z.boolean().optional().describe("Disable this variant for the model"),
+            })
+            .catchall(z.any()),
         )
-        .optional(),
+        .optional()
+        .describe("Variant-specific configuration"),
+    })
+    .partial()
+
+  export const Provider = z
+    .object({
+      api: z.string().optional(),
+      name: z.string(),
+      env: z.array(z.string()),
+      id: z.string(),
+      npm: z.string().optional(),
+      whitelist: z.array(z.string()).optional(),
+      blacklist: z.array(z.string()).optional(),
       options: z
         .object({
           apiKey: z.string().optional(),
@@ -840,11 +897,14 @@ export namespace Config {
         })
         .catchall(z.any())
         .optional(),
+      models: z.record(z.string(), Model).optional(),
     })
+    .partial()
     .strict()
     .meta({
       ref: "ProviderConfig",
     })
+
   export type Provider = z.infer<typeof Provider>
 
   export const Info = z

packages/opencode/src/effect/cross-spawn-spawner.ts

@@ -499,4 +499,3 @@ const rt = lazy(async () => {
 
 type RT = Awaited<ReturnType<typeof rt>>
 export const runPromiseExit: RT["runPromiseExit"] = async (...args) => (await rt()).runPromiseExit(...(args as [any]))
-export const runPromise: RT["runPromise"] = async (...args) => (await rt()).runPromise(...(args as [any]))

packages/opencode/src/effect/instance-state.ts

@@ -73,10 +73,4 @@ export namespace InstanceState {
     Effect.gen(function* () {
       return yield* ScopedCache.invalidate(self.cache, yield* directory)
     })
-
-  /**
-   * Effect finalizers run on the fiber scheduler after the original async
-   * boundary, so ALS reads like Instance.directory can be gone by then.
-   */
-  export const withALS = <T>(fn: () => T) => Effect.map(context, (ctx) => Instance.restore(ctx, fn))
 }

packages/opencode/src/effect/run-service.ts

@@ -7,7 +7,7 @@ import { Observability } from "./oltp"
 
 export const memoMap = Layer.makeMemoMapUnsafe()
 
-function attach<A, E, R>(effect: Effect.Effect<A, E, R>): Effect.Effect<A, E, R> {
+export function attach<A, E, R>(effect: Effect.Effect<A, E, R>): Effect.Effect<A, E, R> {
   try {
     const ctx = Instance.current
     return Effect.provideService(effect, InstanceRef, ctx)

packages/opencode/src/effect/runner.ts

@@ -1,10 +1,10 @@
-import { Cause, Deferred, Effect, Exit, Fiber, Option, Schema, Scope, SynchronizedRef } from "effect"
+import { Cause, Deferred, Effect, Exit, Fiber, Schema, Scope, SynchronizedRef } from "effect"
 
 export interface Runner<A, E = never> {
   readonly state: Runner.State<A, E>
   readonly busy: boolean
   readonly ensureRunning: (work: Effect.Effect<A, E>) => Effect.Effect<A, E>
-  readonly startShell: (work: (signal: AbortSignal) => Effect.Effect<A, E>) => Effect.Effect<A, E>
+  readonly startShell: (work: Effect.Effect<A, E>) => Effect.Effect<A, E>
   readonly cancel: Effect.Effect<void>
 }
 
@@ -20,7 +20,6 @@ export namespace Runner {
   interface ShellHandle<A, E> {
     id: number
     fiber: Fiber.Fiber<A, E>
-    abort: AbortController
   }
 
   interface PendingHandle<A, E> {
@@ -100,13 +99,7 @@ export namespace Runner {
         }),
       ).pipe(Effect.flatten)
 
-    const stopShell = (shell: ShellHandle<A, E>) =>
-      Effect.gen(function* () {
-        shell.abort.abort()
-        const exit = yield* Fiber.await(shell.fiber).pipe(Effect.timeoutOption("100 millis"))
-        if (Option.isNone(exit)) yield* Fiber.interrupt(shell.fiber)
-        yield* Fiber.await(shell.fiber).pipe(Effect.exit, Effect.asVoid)
-      })
+    const stopShell = (shell: ShellHandle<A, E>) => Fiber.interrupt(shell.fiber)
 
     const ensureRunning = (work: Effect.Effect<A, E>) =>
       SynchronizedRef.modifyEffect(
@@ -138,7 +131,7 @@ export namespace Runner {
         ),
       )
 
-    const startShell = (work: (signal: AbortSignal) => Effect.Effect<A, E>) =>
+    const startShell = (work: Effect.Effect<A, E>) =>
       SynchronizedRef.modifyEffect(
         ref,
         Effect.fnUntraced(function* (st) {
@@ -153,9 +146,8 @@ export namespace Runner {
           }
           yield* busy
           const id = next()
-          const abort = new AbortController()
-          const fiber = yield* work(abort.signal).pipe(Effect.ensuring(finishShell(id)), Effect.forkChild)
-          const shell = { id, fiber, abort } satisfies ShellHandle<A, E>
+          const fiber = yield* work.pipe(Effect.ensuring(finishShell(id)), Effect.forkChild)
+          const shell = { id, fiber } satisfies ShellHandle<A, E>
           return [
             Effect.gen(function* () {
               const exit = yield* Fiber.await(fiber)

packages/opencode/src/file/time.ts

@@ -46,7 +46,7 @@ export namespace FileTime {
       const disableCheck = yield* Flag.OPENCODE_DISABLE_FILETIME_CHECK
 
       const stamp = Effect.fnUntraced(function* (file: string) {
-        const info = yield* fsys.stat(file).pipe(Effect.catch(() => Effect.succeed(undefined)))
+        const info = yield* fsys.stat(file).pipe(Effect.catch(() => Effect.void))
         return {
           read: yield* DateTime.nowAsDate,
           mtime: info ? Option.getOrUndefined(info.mtime)?.getTime() : undefined,

packages/opencode/src/git/index.ts

@@ -265,39 +265,7 @@ export namespace Git {
     return runPromise((git) => git.run(args, opts))
   }
 
-  export async function branch(cwd: string) {
-    return runPromise((git) => git.branch(cwd))
-  }
-
-  export async function prefix(cwd: string) {
-    return runPromise((git) => git.prefix(cwd))
-  }
-
   export async function defaultBranch(cwd: string) {
     return runPromise((git) => git.defaultBranch(cwd))
   }
-
-  export async function hasHead(cwd: string) {
-    return runPromise((git) => git.hasHead(cwd))
-  }
-
-  export async function mergeBase(cwd: string, base: string, head?: string) {
-    return runPromise((git) => git.mergeBase(cwd, base, head))
-  }
-
-  export async function show(cwd: string, ref: string, file: string, prefix?: string) {
-    return runPromise((git) => git.show(cwd, ref, file, prefix))
-  }
-
-  export async function status(cwd: string) {
-    return runPromise((git) => git.status(cwd))
-  }
-
-  export async function diff(cwd: string, ref: string) {
-    return runPromise((git) => git.diff(cwd, ref))
-  }
-
-  export async function stats(cwd: string, ref: string) {
-    return runPromise((git) => git.stats(cwd, ref))
-  }
 }

packages/opencode/src/index.ts

@@ -36,6 +36,7 @@ import { Database } from "./storage/db"
 import { errorMessage } from "./util/error"
 import { PluginCommand } from "./cli/cmd/plug"
 import { Heap } from "./cli/heap"
+import { drizzle } from "drizzle-orm/bun-sqlite"
 
 process.on("unhandledRejection", (e) => {
   Log.Default.error("rejection", {
@@ -119,7 +120,7 @@ const cli = yargs(args)
       let last = -1
       if (tty) process.stderr.write("\x1b[?25l")
       try {
-        await JsonMigration.run(Database.Client().$client, {
+        await JsonMigration.run(drizzle({ client: Database.Client().$client }), {
           progress: (event) => {
             const percent = Math.floor((event.current / event.total) * 100)
             if (percent === last && event.current !== event.total) return

packages/opencode/src/lsp/index.ts

@@ -245,7 +245,7 @@ export namespace LSP {
               })
 
             if (!handle) return undefined
-            log.info("spawned lsp server", { serverID: server.id })
+            log.info("spawned lsp server", { serverID: server.id, root })
 
             const client = await LSPClient.create({
               serverID: server.id,

packages/opencode/src/lsp/server.ts

@@ -867,7 +867,7 @@ export namespace LSPServer {
 
   export const Clangd: Info = {
     id: "clangd",
-    root: NearestRoot(["compile_commands.json", "compile_flags.txt", ".clangd", "CMakeLists.txt", "Makefile"]),
+    root: NearestRoot(["compile_commands.json", "compile_flags.txt", ".clangd"]),
     extensions: [".c", ".cpp", ".cc", ".cxx", ".c++", ".h", ".hpp", ".hh", ".hxx", ".h++"],
     async spawn(root) {
       const args = ["--background-index", "--clang-tidy"]

packages/opencode/src/mcp/index.ts

@@ -286,6 +286,7 @@ export namespace MCP {
               clientId: oauthConfig?.clientId,
               clientSecret: oauthConfig?.clientSecret,
               scope: oauthConfig?.scope,
+              redirectUri: oauthConfig?.redirectUri,
             },
             {
               onRedirect: async (url) => {
@@ -501,7 +502,7 @@ export namespace MCP {
                   return
                 }
 
-                const result = yield* create(key, mcp).pipe(Effect.catch(() => Effect.succeed(undefined)))
+                const result = yield* create(key, mcp).pipe(Effect.catch(() => Effect.void))
                 if (!result) return
 
                 s.status[key] = result.status
@@ -716,13 +717,16 @@ export namespace MCP {
         if (mcpConfig.type !== "remote") throw new Error(`MCP server ${mcpName} is not a remote server`)
         if (mcpConfig.oauth === false) throw new Error(`MCP server ${mcpName} has OAuth explicitly disabled`)
 
-        yield* Effect.promise(() => McpOAuthCallback.ensureRunning())
+        // OAuth config is optional - if not provided, we'll use auto-discovery
+        const oauthConfig = typeof mcpConfig.oauth === "object" ? mcpConfig.oauth : undefined
+
+        // Start the callback server with custom redirectUri if configured
+        yield* Effect.promise(() => McpOAuthCallback.ensureRunning(oauthConfig?.redirectUri))
 
         const oauthState = Array.from(crypto.getRandomValues(new Uint8Array(32)))
           .map((b) => b.toString(16).padStart(2, "0"))
           .join("")
         yield* auth.updateOAuthState(mcpName, oauthState)
-        const oauthConfig = typeof mcpConfig.oauth === "object" ? mcpConfig.oauth : undefined
         let capturedUrl: URL | undefined
         const authProvider = new McpOAuthProvider(
           mcpName,
@@ -731,6 +735,7 @@ export namespace MCP {
             clientId: oauthConfig?.clientId,
             clientSecret: oauthConfig?.clientSecret,
             scope: oauthConfig?.scope,
+            redirectUri: oauthConfig?.redirectUri,
           },
           {
             onRedirect: async (url) => {
@@ -901,9 +906,6 @@ export namespace MCP {
 
   export const disconnect = async (name: string) => runPromise((svc) => svc.disconnect(name))
 
-  export const getPrompt = async (clientName: string, name: string, args?: Record<string, string>) =>
-    runPromise((svc) => svc.getPrompt(clientName, name, args))
-
   export const startAuth = async (mcpName: string) => runPromise((svc) => svc.startAuth(mcpName))
 
   export const authenticate = async (mcpName: string) => runPromise((svc) => svc.authenticate(mcpName))

packages/opencode/src/mcp/oauth-callback.ts

@@ -1,10 +1,14 @@
 import { createConnection } from "net"
 import { createServer } from "http"
 import { Log } from "../util/log"
-import { OAUTH_CALLBACK_PORT, OAUTH_CALLBACK_PATH } from "./oauth-provider"
+import { OAUTH_CALLBACK_PORT, OAUTH_CALLBACK_PATH, parseRedirectUri } from "./oauth-provider"
 
 const log = Log.create({ service: "mcp.oauth-callback" })
 
+// Current callback server configuration (may differ from defaults if custom redirectUri is used)
+let currentPort = OAUTH_CALLBACK_PORT
+let currentPath = OAUTH_CALLBACK_PATH
+
 const HTML_SUCCESS = `<!DOCTYPE html>
 <html>
 <head>
@@ -71,9 +75,9 @@ export namespace McpOAuthCallback {
   }
 
   function handleRequest(req: import("http").IncomingMessage, res: import("http").ServerResponse) {
-    const url = new URL(req.url || "/", `http://localhost:${OAUTH_CALLBACK_PORT}`)
+    const url = new URL(req.url || "/", `http://localhost:${currentPort}`)
 
-    if (url.pathname !== OAUTH_CALLBACK_PATH) {
+    if (url.pathname !== currentPath) {
       res.writeHead(404)
       res.end("Not found")
       return
@@ -135,19 +139,31 @@ export namespace McpOAuthCallback {
     res.end(HTML_SUCCESS)
   }
 
-  export async function ensureRunning(): Promise<void> {
+  export async function ensureRunning(redirectUri?: string): Promise<void> {
+    // Parse the redirect URI to get port and path (uses defaults if not provided)
+    const { port, path } = parseRedirectUri(redirectUri)
+
+    // If server is running on a different port/path, stop it first
+    if (server && (currentPort !== port || currentPath !== path)) {
+      log.info("stopping oauth callback server to reconfigure", { oldPort: currentPort, newPort: port })
+      await stop()
+    }
+
     if (server) return
 
-    const running = await isPortInUse()
+    const running = await isPortInUse(port)
     if (running) {
-      log.info("oauth callback server already running on another instance", { port: OAUTH_CALLBACK_PORT })
+      log.info("oauth callback server already running on another instance", { port })
       return
     }
 
+    currentPort = port
+    currentPath = path
+
     server = createServer(handleRequest)
     await new Promise<void>((resolve, reject) => {
-      server!.listen(OAUTH_CALLBACK_PORT, () => {
-        log.info("oauth callback server started", { port: OAUTH_CALLBACK_PORT })
+      server!.listen(currentPort, () => {
+        log.info("oauth callback server started", { port: currentPort, path: currentPath })
         resolve()
       })
       server!.on("error", reject)
@@ -182,9 +198,9 @@ export namespace McpOAuthCallback {
     }
   }
 
-  export async function isPortInUse(): Promise<boolean> {
+  export async function isPortInUse(port: number = OAUTH_CALLBACK_PORT): Promise<boolean> {
     return new Promise((resolve) => {
-      const socket = createConnection(OAUTH_CALLBACK_PORT, "127.0.0.1")
+      const socket = createConnection(port, "127.0.0.1")
       socket.on("connect", () => {
         socket.destroy()
         resolve(true)

packages/opencode/src/mcp/oauth-provider.ts

@@ -17,6 +17,7 @@ export interface McpOAuthConfig {
   clientId?: string
   clientSecret?: string
   scope?: string
+  redirectUri?: string
 }
 
 export interface McpOAuthCallbacks {
@@ -32,6 +33,9 @@ export class McpOAuthProvider implements OAuthClientProvider {
   ) {}
 
   get redirectUrl(): string {
+    if (this.config.redirectUri) {
+      return this.config.redirectUri
+    }
     return `http://127.0.0.1:${OAUTH_CALLBACK_PORT}${OAUTH_CALLBACK_PATH}`
   }
 
@@ -183,3 +187,22 @@ export class McpOAuthProvider implements OAuthClientProvider {
 }
 
 export { OAUTH_CALLBACK_PORT, OAUTH_CALLBACK_PATH }
+
+/**
+ * Parse a redirect URI to extract port and path for the callback server.
+ * Returns defaults if the URI can't be parsed.
+ */
+export function parseRedirectUri(redirectUri?: string): { port: number; path: string } {
+  if (!redirectUri) {
+    return { port: OAUTH_CALLBACK_PORT, path: OAUTH_CALLBACK_PATH }
+  }
+
+  try {
+    const url = new URL(redirectUri)
+    const port = url.port ? parseInt(url.port, 10) : url.protocol === "https:" ? 443 : 80
+    const path = url.pathname || OAUTH_CALLBACK_PATH
+    return { port, path }
+  } catch {
+    return { port: OAUTH_CALLBACK_PORT, path: OAUTH_CALLBACK_PATH }
+  }
+}

packages/opencode/src/node.ts

@@ -1 +1,6 @@
+export { Config } from "./config/config"
 export { Server } from "./server/server"
+export { bootstrap } from "./cli/bootstrap"
+export { Log } from "./util/log"
+export { Database } from "./storage/db"
+export { JsonMigration } from "./storage/json-migration"

packages/opencode/src/plugin/codex.ts

@@ -376,9 +376,9 @@ export async function CodexAuthPlugin(input: PluginInput): Promise<Hooks> {
           "gpt-5.4",
           "gpt-5.4-mini",
         ])
-        for (const modelId of Object.keys(provider.models)) {
+        for (const [modelId, model] of Object.entries(provider.models)) {
           if (modelId.includes("codex")) continue
-          if (allowedModels.has(modelId)) continue
+          if (allowedModels.has(model.api.id)) continue
           delete provider.models[modelId]
         }
 

packages/opencode/src/plugin/index.ts

@@ -119,7 +119,7 @@ export namespace Plugin {
                   Authorization: `Basic ${Buffer.from(`${Flag.OPENCODE_SERVER_USERNAME ?? "opencode"}:${Flag.OPENCODE_SERVER_PASSWORD}`).toString("base64")}`,
                 }
               : undefined,
-            fetch: async (...args) => Server.Default().fetch(...args),
+            fetch: async (...args) => Server.Default().app.fetch(...args),
           })
           const cfg = yield* config.get()
           const input: PluginInput = {

packages/opencode/src/project/project.ts

@@ -158,7 +158,7 @@ export namespace Project {
         return yield* fs.readFileString(pathSvc.join(dir, "opencode")).pipe(
           Effect.map((x) => x.trim()),
           Effect.map(ProjectID.make),
-          Effect.catch(() => Effect.succeed(undefined)),
+          Effect.catch(() => Effect.void),
         )
       })
 

packages/opencode/src/project/vcs.ts

@@ -161,39 +161,37 @@ export namespace Vcs {
       const bus = yield* Bus.Service
 
       const state = yield* InstanceState.make<State>(
-        Effect.fn("Vcs.state")((ctx) =>
-          Effect.gen(function* () {
-            if (ctx.project.vcs !== "git") {
-              return { current: undefined, root: undefined }
-            }
+        Effect.fn("Vcs.state")(function* (ctx) {
+          if (ctx.project.vcs !== "git") {
+            return { current: undefined, root: undefined }
+          }
 
-            const get = Effect.fnUntraced(function* () {
-              return yield* git.branch(ctx.directory)
-            })
-            const [current, root] = yield* Effect.all([git.branch(ctx.directory), git.defaultBranch(ctx.directory)], {
-              concurrency: 2,
-            })
-            const value = { current, root }
-            log.info("initialized", { branch: value.current, default_branch: value.root?.name })
+          const get = Effect.fnUntraced(function* () {
+            return yield* git.branch(ctx.directory)
+          })
+          const [current, root] = yield* Effect.all([git.branch(ctx.directory), git.defaultBranch(ctx.directory)], {
+            concurrency: 2,
+          })
+          const value = { current, root }
+          log.info("initialized", { branch: value.current, default_branch: value.root?.name })
 
-            yield* bus.subscribe(FileWatcher.Event.Updated).pipe(
-              Stream.filter((evt) => evt.properties.file.endsWith("HEAD")),
-              Stream.runForEach((_evt) =>
-                Effect.gen(function* () {
-                  const next = yield* get()
-                  if (next !== value.current) {
-                    log.info("branch changed", { from: value.current, to: next })
-                    value.current = next
-                    yield* bus.publish(Event.BranchUpdated, { branch: next })
-                  }
-                }),
-              ),
-              Effect.forkScoped,
-            )
+          yield* bus.subscribe(FileWatcher.Event.Updated).pipe(
+            Stream.filter((evt) => evt.properties.file.endsWith("HEAD")),
+            Stream.runForEach((_evt) =>
+              Effect.gen(function* () {
+                const next = yield* get()
+                if (next !== value.current) {
+                  log.info("branch changed", { from: value.current, to: next })
+                  value.current = next
+                  yield* bus.publish(Event.BranchUpdated, { branch: next })
+                }
+              }),
+            ),
+            Effect.forkScoped,
+          )
 
-            return value
-          }),
-        ),
+          return value
+        }),
       )
 
       return Service.of({

packages/opencode/src/provider/models-snapshot.d.ts

@@ -0,0 +1,2 @@
+// Auto-generated by build.ts - do not edit
+export declare const snapshot: Record<string, unknown>

packages/opencode/src/provider/models.ts

@@ -22,6 +22,27 @@ export namespace ModelsDev {
   )
   const ttl = 5 * 60 * 1000
 
+  type JsonValue = string | number | boolean | null | { [key: string]: JsonValue } | JsonValue[]
+
+  const JsonValue: z.ZodType<JsonValue> = z.lazy(() =>
+    z.union([z.string(), z.number(), z.boolean(), z.null(), z.array(JsonValue), z.record(z.string(), JsonValue)]),
+  )
+
+  const Cost = z.object({
+    input: z.number(),
+    output: z.number(),
+    cache_read: z.number().optional(),
+    cache_write: z.number().optional(),
+    context_over_200k: z
+      .object({
+        input: z.number(),
+        output: z.number(),
+        cache_read: z.number().optional(),
+        cache_write: z.number().optional(),
+      })
+      .optional(),
+  })
+
   export const Model = z.object({
     id: z.string(),
     name: z.string(),
@@ -41,22 +62,7 @@ export namespace ModelsDev {
           .strict(),
       ])
       .optional(),
-    cost: z
-      .object({
-        input: z.number(),
-        output: z.number(),
-        cache_read: z.number().optional(),
-        cache_write: z.number().optional(),
-        context_over_200k: z
-          .object({
-            input: z.number(),
-            output: z.number(),
-            cache_read: z.number().optional(),
-            cache_write: z.number().optional(),
-          })
-          .optional(),
-      })
-      .optional(),
+    cost: Cost.optional(),
     limit: z.object({
       context: z.number(),
       input: z.number().optional(),
@@ -68,12 +74,26 @@ export namespace ModelsDev {
         output: z.array(z.enum(["text", "audio", "image", "video", "pdf"])),
       })
       .optional(),
-    experimental: z.boolean().optional(),
+    experimental: z
+      .object({
+        modes: z
+          .record(
+            z.string(),
+            z.object({
+              cost: Cost.optional(),
+              provider: z
+                .object({
+                  body: z.record(z.string(), JsonValue).optional(),
+                  headers: z.record(z.string(), z.string()).optional(),
+                })
+                .optional(),
+            }),
+          )
+          .optional(),
+      })
+      .optional(),
     status: z.enum(["alpha", "beta", "deprecated"]).optional(),
-    options: z.record(z.string(), z.any()),
-    headers: z.record(z.string(), z.string()).optional(),
     provider: z.object({ npm: z.string().optional(), api: z.string().optional() }).optional(),
-    variants: z.record(z.string(), z.record(z.string(), z.any())).optional(),
   })
   export type Model = z.infer<typeof Model>
 

packages/opencode/src/provider/provider.ts

@@ -574,6 +574,7 @@ export namespace Provider {
               const sdkModelID = isWorkflowModel(modelID) ? modelID : "duo-workflow"
               const model = sdk.workflowChat(sdkModelID, {
                 featureFlags,
+                workflowDefinition: options?.workflowDefinition as string | undefined,
               })
               if (workflowRef) {
                 model.selectedModelRef = workflowRef
@@ -925,6 +926,28 @@ export namespace Provider {
 
   export class Service extends ServiceMap.Service<Service, Interface>()("@opencode/Provider") {}
 
+  function cost(c: ModelsDev.Model["cost"]): Model["cost"] {
+    const result: Model["cost"] = {
+      input: c?.input ?? 0,
+      output: c?.output ?? 0,
+      cache: {
+        read: c?.cache_read ?? 0,
+        write: c?.cache_write ?? 0,
+      },
+    }
+    if (c?.context_over_200k) {
+      result.experimentalOver200K = {
+        cache: {
+          read: c.context_over_200k.cache_read ?? 0,
+          write: c.context_over_200k.cache_write ?? 0,
+        },
+        input: c.context_over_200k.input,
+        output: c.context_over_200k.output,
+      }
+    }
+    return result
+  }
+
   function fromModelsDevModel(provider: ModelsDev.Provider, model: ModelsDev.Model): Model {
     const m: Model = {
       id: ModelID.make(model.id),
@@ -937,26 +960,9 @@ export namespace Provider {
         npm: model.provider?.npm ?? provider.npm ?? "@ai-sdk/openai-compatible",
       },
       status: model.status ?? "active",
-      headers: model.headers ?? {},
-      options: model.options ?? {},
-      cost: {
-        input: model.cost?.input ?? 0,
-        output: model.cost?.output ?? 0,
-        cache: {
-          read: model.cost?.cache_read ?? 0,
-          write: model.cost?.cache_write ?? 0,
-        },
-        experimentalOver200K: model.cost?.context_over_200k
-          ? {
-              cache: {
-                read: model.cost.context_over_200k.cache_read ?? 0,
-                write: model.cost.context_over_200k.cache_write ?? 0,
-              },
-              input: model.cost.context_over_200k.input,
-              output: model.cost.context_over_200k.output,
-            }
-          : undefined,
-      },
+      headers: {},
+      options: {},
+      cost: cost(model.cost),
       limit: {
         context: model.limit.context,
         input: model.limit.input,
@@ -993,13 +999,31 @@ export namespace Provider {
   }
 
   export function fromModelsDevProvider(provider: ModelsDev.Provider): Info {
+    const models: Record<string, Model> = {}
+    for (const [key, model] of Object.entries(provider.models)) {
+      models[key] = fromModelsDevModel(provider, model)
+      for (const [mode, opts] of Object.entries(model.experimental?.modes ?? {})) {
+        const id = `${model.id}-${mode}`
+        const m = fromModelsDevModel(provider, model)
+        m.id = ModelID.make(id)
+        m.name = `${model.name} ${mode[0].toUpperCase()}${mode.slice(1)}`
+        if (opts.cost) m.cost = mergeDeep(m.cost, cost(opts.cost))
+        // convert body params to camelCase for ai sdk compatibility
+        if (opts.provider?.body)
+          m.options = Object.fromEntries(
+            Object.entries(opts.provider.body).map(([k, v]) => [k.replace(/_([a-z])/g, (_, c) => c.toUpperCase()), v]),
+          )
+        if (opts.provider?.headers) m.headers = opts.provider.headers
+        models[id] = m
+      }
+    }
     return {
       id: ProviderID.make(provider.id),
       source: "custom",
       name: provider.name,
       env: provider.env ?? [],
       options: {},
-      models: mapValues(provider.models, (model) => fromModelsDevModel(provider, model)),
+      models,
     }
   }
 

packages/opencode/src/provider/transform.ts

@@ -376,7 +376,8 @@ export namespace ProviderTransform {
       id.includes("mistral") ||
       id.includes("kimi") ||
       id.includes("k2p5") ||
-      id.includes("qwen")
+      id.includes("qwen") ||
+      id.includes("big-pickle")
     )
       return {}
 

packages/opencode/src/pty/index.ts

@@ -371,10 +371,6 @@ export namespace Pty {
     return runPromise((svc) => svc.get(id))
   }
 
-  export async function resize(id: PtyID, cols: number, rows: number) {
-    return runPromise((svc) => svc.resize(id, cols, rows))
-  }
-
   export async function write(id: PtyID, data: string) {
     return runPromise((svc) => svc.write(id, data))
   }

packages/opencode/src/server/instance.ts

@@ -4,6 +4,7 @@ import { proxy } from "hono/proxy"
 import type { UpgradeWebSocket } from "hono/ws"
 import z from "zod"
 import { createHash } from "node:crypto"
+import * as fs from "node:fs/promises"
 import { Log } from "../util/log"
 import { Format } from "../format"
 import { TuiRoutes } from "./routes/tui"
@@ -28,6 +29,7 @@ import { ExperimentalRoutes } from "./routes/experimental"
 import { ProviderRoutes } from "./routes/provider"
 import { EventRoutes } from "./routes/event"
 import { errorHandler } from "./middleware"
+import { getMimeType } from "hono/utils/mime"
 
 const log = Log.create({ service: "server" })
 
@@ -285,13 +287,14 @@ export const InstanceRoutes = (upgrade: UpgradeWebSocket, app: Hono = new Hono()
       if (embeddedWebUI) {
         const match = embeddedWebUI[path.replace(/^\//, "")] ?? embeddedWebUI["index.html"] ?? null
         if (!match) return c.json({ error: "Not Found" }, 404)
-        const file = Bun.file(match)
-        if (await file.exists()) {
-          c.header("Content-Type", file.type)
-          if (file.type.startsWith("text/html")) {
+
+        if (await fs.exists(match)) {
+          const mime = getMimeType(match) ?? "text/plain"
+          c.header("Content-Type", mime)
+          if (mime.startsWith("text/html")) {
             c.header("Content-Security-Policy", DEFAULT_CSP)
           }
-          return c.body(await file.arrayBuffer())
+          return c.body(new Uint8Array(await fs.readFile(match)))
         } else {
           return c.json({ error: "Not Found" }, 404)
         }

packages/opencode/src/server/proxy.ts

@@ -1,7 +1,6 @@
 import type { Target } from "@/control-plane/types"
-import { lazy } from "@/util/lazy"
 import { Hono } from "hono"
-import { upgradeWebSocket } from "hono/bun"
+import type { UpgradeWebSocket } from "hono/ws"
 
 const hop = new Set([
   "connection",
@@ -53,10 +52,10 @@ function send(ws: { send(data: string | ArrayBuffer | Uint8Array): void }, data:
   return ws.send(data)
 }
 
-const app = lazy(() =>
+const app = (upgrade: UpgradeWebSocket) =>
   new Hono().get(
     "/__workspace_ws",
-    upgradeWebSocket((c) => {
+    upgrade((c) => {
       const url = c.req.header("x-opencode-proxy-url")
       const queue: Msg[] = []
       let remote: WebSocket | undefined
@@ -96,8 +95,7 @@ const app = lazy(() =>
         },
       }
     }),
-  ),
-)
+  )
 
 export namespace ServerProxy {
   export function http(target: Extract<Target, { type: "remote" }>, req: Request) {
@@ -112,13 +110,18 @@ export namespace ServerProxy {
     )
   }
 
-  export function websocket(target: Extract<Target, { type: "remote" }>, req: Request, env: unknown) {
+  export function websocket(
+    upgrade: UpgradeWebSocket,
+    target: Extract<Target, { type: "remote" }>,
+    req: Request,
+    env: unknown,
+  ) {
     const url = new URL(req.url)
     url.pathname = "/__workspace_ws"
     url.search = ""
     const next = new Headers(req.headers)
     next.set("x-opencode-proxy-url", socket(target.url))
-    return app().fetch(
+    return app(upgrade).fetch(
       new Request(url, {
         method: req.method,
         headers: next,

packages/opencode/src/server/router.ts

@@ -89,7 +89,7 @@ export function WorkspaceRouterMiddleware(upgrade: UpgradeWebSocket): Middleware
     }
 
     if (c.req.header("upgrade")?.toLowerCase() === "websocket") {
-      return ServerProxy.websocket(target, c.req.raw, c.env)
+      return ServerProxy.websocket(upgrade, target, c.req.raw, c.env)
     }
 
     const headers = new Headers(c.req.raw.headers)

packages/opencode/src/server/routes/provider.ts

@@ -28,7 +28,7 @@ export const ProviderRoutes = lazy(() =>
               "application/json": {
                 schema: resolver(
                   z.object({
-                    all: ModelsDev.Provider.array(),
+                    all: Provider.Info.array(),
                     default: z.record(z.string(), z.string()),
                     connected: z.array(z.string()),
                   }),

packages/opencode/src/server/routes/session.ts

@@ -6,6 +6,7 @@ import z from "zod"
 import { Session } from "../../session"
 import { MessageV2 } from "../../session/message-v2"
 import { SessionPrompt } from "../../session/prompt"
+import { SessionRunState } from "@/session/run-state"
 import { SessionCompaction } from "../../session/compaction"
 import { SessionRevert } from "../../session/revert"
 import { SessionStatus } from "@/session/status"
@@ -121,7 +122,6 @@ export const SessionRoutes = lazy(() =>
       ),
       async (c) => {
         const sessionID = c.req.valid("param").sessionID
-        log.info("SEARCH", { url: c.req.url })
         const session = await Session.get(sessionID)
         return c.json(session)
       },
@@ -699,7 +699,7 @@ export const SessionRoutes = lazy(() =>
       ),
       async (c) => {
         const params = c.req.valid("param")
-        await SessionPrompt.assertNotBusy(params.sessionID)
+        await SessionRunState.assertNotBusy(params.sessionID)
         await Session.removeMessage({
           sessionID: params.sessionID,
           messageID: params.messageID,
@@ -843,19 +843,17 @@ export const SessionRoutes = lazy(() =>
       ),
       validator("json", SessionPrompt.PromptInput.omit({ sessionID: true })),
       async (c) => {
-        c.status(204)
-        c.header("Content-Type", "application/json")
-        return stream(c, async () => {
-          const sessionID = c.req.valid("param").sessionID
-          const body = c.req.valid("json")
-          SessionPrompt.prompt({ ...body, sessionID }).catch((err) => {
-            log.error("prompt_async failed", { sessionID, error: err })
-            Bus.publish(Session.Event.Error, {
-              sessionID,
-              error: new NamedError.Unknown({ message: err instanceof Error ? err.message : String(err) }).toObject(),
-            })
+        const sessionID = c.req.valid("param").sessionID
+        const body = c.req.valid("json")
+        SessionPrompt.prompt({ ...body, sessionID }).catch((err) => {
+          log.error("prompt_async failed", { sessionID, error: err })
+          Bus.publish(Session.Event.Error, {
+            sessionID,
+            error: new NamedError.Unknown({ message: err instanceof Error ? err.message : String(err) }).toObject(),
           })
         })
+
+        return c.body(null, 204)
       },
     )
     .post(
@@ -906,7 +904,7 @@ export const SessionRoutes = lazy(() =>
             description: "Created message",
             content: {
               "application/json": {
-                schema: resolver(MessageV2.Assistant),
+                schema: resolver(MessageV2.WithParts),
               },
             },
           },

packages/opencode/src/server/server.ts

@@ -2,6 +2,7 @@ import { Log } from "../util/log"
 import { describeRoute, generateSpecs, validator, resolver, openAPIRouteHandler } from "hono-openapi"
 import { Hono } from "hono"
 import { compress } from "hono/compress"
+import { createNodeWebSocket } from "@hono/node-ws"
 import { cors } from "hono/cors"
 import { basicAuth } from "hono/basic-auth"
 import type { UpgradeWebSocket } from "hono/ws"
@@ -9,8 +10,6 @@ import z from "zod"
 import { Auth } from "../auth"
 import { Flag } from "../flag/flag"
 import { ProviderID } from "../provider/schema"
-import { createAdaptorServer, type ServerType } from "@hono/node-server"
-import { createNodeWebSocket } from "@hono/node-ws"
 import { WorkspaceRouterMiddleware } from "./router"
 import { errors } from "./error"
 import { GlobalRoutes } from "./routes/global"
@@ -19,6 +18,7 @@ import { lazy } from "@/util/lazy"
 import { errorHandler } from "./middleware"
 import { InstanceRoutes } from "./instance"
 import { initProjectors } from "./projectors"
+import { createAdaptorServer, type ServerType } from "@hono/node-server"
 
 // @ts-ignore This global is needed to prevent ai-sdk from logging warnings to stdout https://github.com/vercel/ai/blob/2dc67e0ef538307f21368db32d5a12345d98831b/packages/ai/src/logger/log-warnings.ts#L85
 globalThis.AI_SDK_LOG_WARNINGS = false
@@ -42,7 +42,7 @@ export namespace Server {
     return false
   }
 
-  export const Default = lazy(() => create({}).app)
+  export const Default = lazy(() => create({}))
 
   export function ControlPlaneRoutes(upgrade: UpgradeWebSocket, app = new Hono(), opts?: { cors?: string[] }): Hono {
     return app
@@ -54,6 +54,9 @@ export namespace Server {
         const password = Flag.OPENCODE_SERVER_PASSWORD
         if (!password) return next()
         const username = Flag.OPENCODE_SERVER_USERNAME ?? "opencode"
+
+        if (c.req.query("auth_token")) c.req.raw.headers.set("authorization", `Basic ${c.req.query("auth_token")}`)
+
         return basicAuth({ username, password })(c, next)
       })
       .use(async (c, next) => {

packages/opencode/src/session/compaction.ts

@@ -253,23 +253,21 @@ When constructing the summary, try to stick to this template:
           sessionID: input.sessionID,
           model,
         })
-        const result = yield* processor
-          .process({
-            user: userMessage,
-            agent,
-            sessionID: input.sessionID,
-            tools: {},
-            system: [],
-            messages: [
-              ...modelMessages,
-              {
-                role: "user",
-                content: [{ type: "text", text: prompt }],
-              },
-            ],
-            model,
-          })
-          .pipe(Effect.onInterrupt(() => processor.abort()))
+        const result = yield* processor.process({
+          user: userMessage,
+          agent,
+          sessionID: input.sessionID,
+          tools: {},
+          system: [],
+          messages: [
+            ...modelMessages,
+            {
+              role: "user",
+              content: [{ type: "text", text: prompt }],
+            },
+          ],
+          model,
+        })
 
         if (result === "compact") {
           processor.message.error = new MessageV2.ContextOverflowError({
@@ -403,17 +401,6 @@ When constructing the summary, try to stick to this template:
     return runPromise((svc) => svc.prune(input))
   }
 
-  export const process = fn(
-    z.object({
-      parentID: MessageID.zod,
-      messages: z.custom<MessageV2.WithParts[]>(),
-      sessionID: SessionID.zod,
-      auto: z.boolean(),
-      overflow: z.boolean().optional(),
-    }),
-    (input) => runPromise((svc) => svc.process(input)),
-  )
-
   export const create = fn(
     z.object({
       sessionID: SessionID.zod,

packages/opencode/src/session/index.ts

@@ -12,7 +12,7 @@ import { Installation } from "../installation"
 import { Database, NotFoundError, eq, and, gte, isNull, desc, like, inArray, lt } from "../storage/db"
 import { SyncEvent } from "../sync"
 import type { SQL } from "../storage/db"
-import { SessionTable } from "./session.sql"
+import { PartTable, SessionTable } from "./session.sql"
 import { ProjectTable } from "../project/project.sql"
 import { Storage } from "@/storage/storage"
 import { Log } from "../util/log"
@@ -345,6 +345,11 @@ export namespace Session {
       messageID: MessageID
       partID: PartID
     }) => Effect.Effect<PartID>
+    readonly getPart: (input: {
+      sessionID: SessionID
+      messageID: MessageID
+      partID: PartID
+    }) => Effect.Effect<MessageV2.Part | undefined>
     readonly updatePart: <T extends MessageV2.Part>(part: T) => Effect.Effect<T>
     readonly updatePartDelta: (input: {
       sessionID: SessionID
@@ -492,6 +497,29 @@ export namespace Session {
           return part
         }).pipe(Effect.withSpan("Session.updatePart"))
 
+      const getPart: Interface["getPart"] = Effect.fn("Session.getPart")(function* (input) {
+        const row = Database.use((db) =>
+          db
+            .select()
+            .from(PartTable)
+            .where(
+              and(
+                eq(PartTable.session_id, input.sessionID),
+                eq(PartTable.message_id, input.messageID),
+                eq(PartTable.id, input.partID),
+              ),
+            )
+            .get(),
+        )
+        if (!row) return
+        return {
+          ...row.data,
+          id: row.id,
+          sessionID: row.session_id,
+          messageID: row.message_id,
+        } as MessageV2.Part
+      })
+
       const create = Effect.fn("Session.create")(function* (input?: {
         parentID?: SessionID
         title?: string
@@ -675,6 +703,7 @@ export namespace Session {
         removeMessage,
         removePart,
         updatePart,
+        getPart,
         updatePartDelta,
         initialize,
       })
@@ -701,7 +730,6 @@ export namespace Session {
     runPromise((svc) => svc.fork(input)),
   )
 
-  export const touch = fn(SessionID.zod, (id) => runPromise((svc) => svc.touch(id)))
   export const get = fn(SessionID.zod, (id) => runPromise((svc) => svc.get(id)))
   export const share = fn(SessionID.zod, (id) => runPromise((svc) => svc.share(id)))
   export const unshare = fn(SessionID.zod, (id) => runPromise((svc) => svc.unshare(id)))
@@ -714,24 +742,12 @@ export namespace Session {
     runPromise((svc) => svc.setArchived(input)),
   )
 
-  export const setPermission = fn(z.object({ sessionID: SessionID.zod, permission: Permission.Ruleset }), (input) =>
-    runPromise((svc) => svc.setPermission(input)),
-  )
-
   export const setRevert = fn(
     z.object({ sessionID: SessionID.zod, revert: Info.shape.revert, summary: Info.shape.summary }),
     (input) =>
       runPromise((svc) => svc.setRevert({ sessionID: input.sessionID, revert: input.revert, summary: input.summary })),
   )
 
-  export const clearRevert = fn(SessionID.zod, (id) => runPromise((svc) => svc.clearRevert(id)))
-
-  export const setSummary = fn(z.object({ sessionID: SessionID.zod, summary: Info.shape.summary }), (input) =>
-    runPromise((svc) => svc.setSummary({ sessionID: input.sessionID, summary: input.summary })),
-  )
-
-  export const diff = fn(SessionID.zod, (id) => runPromise((svc) => svc.diff(id)))
-
   export const messages = fn(z.object({ sessionID: SessionID.zod, limit: z.number().optional() }), (input) =>
     runPromise((svc) => svc.messages(input)),
   )

packages/opencode/src/session/llm.ts

@@ -15,6 +15,10 @@ import { Plugin } from "@/plugin"
 import { SystemPrompt } from "./system"
 import { Flag } from "@/flag/flag"
 import { Permission } from "@/permission"
+import { PermissionID } from "@/permission/schema"
+import { Bus } from "@/bus"
+import { Wildcard } from "@/util/wildcard"
+import { SessionID } from "@/session/schema"
 import { Auth } from "@/auth"
 import { Installation } from "@/installation"
 
@@ -230,7 +234,12 @@ export namespace LLM {
     // from the workflow service are executed via opencode's tool system
     // and results sent back over the WebSocket.
     if (language instanceof GitLabWorkflowLanguageModel) {
-      const workflowModel = language
+      const workflowModel = language as GitLabWorkflowLanguageModel & {
+        sessionID?: string
+        sessionPreapprovedTools?: string[]
+        approvalHandler?: (approvalTools: { name: string; args: string }[]) => Promise<{ approved: boolean }>
+      }
+      workflowModel.sessionID = input.sessionID
       workflowModel.systemPrompt = system.join("\n")
       workflowModel.toolExecutor = async (toolName, argsJson, _requestID) => {
         const t = tools[toolName]
@@ -253,6 +262,57 @@ export namespace LLM {
           return { result: "", error: e.message ?? String(e) }
         }
       }
+
+      const ruleset = Permission.merge(input.agent.permission ?? [], input.permission ?? [])
+      workflowModel.sessionPreapprovedTools = Object.keys(tools).filter((name) => {
+        const match = ruleset.findLast((rule) => Wildcard.match(name, rule.permission))
+        return !match || match.action !== "ask"
+      })
+
+      const approvedToolsForSession = new Set<string>()
+      workflowModel.approvalHandler = Instance.bind(async (approvalTools) => {
+        const uniqueNames = [...new Set(approvalTools.map((t: { name: string }) => t.name))] as string[]
+        // Auto-approve tools that were already approved in this session
+        // (prevents infinite approval loops for server-side MCP tools)
+        if (uniqueNames.every((name) => approvedToolsForSession.has(name))) {
+          return { approved: true }
+        }
+
+        const id = PermissionID.ascending()
+        let reply: Permission.Reply | undefined
+        let unsub: (() => void) | undefined
+        try {
+          unsub = Bus.subscribe(Permission.Event.Replied, (evt) => {
+            if (evt.properties.requestID === id) reply = evt.properties.reply
+          })
+          const toolPatterns = approvalTools.map((t: { name: string; args: string }) => {
+            try {
+              const parsed = JSON.parse(t.args) as Record<string, unknown>
+              const title = (parsed?.title ?? parsed?.name ?? "") as string
+              return title ? `${t.name}: ${title}` : t.name
+            } catch {
+              return t.name
+            }
+          })
+          const uniquePatterns = [...new Set(toolPatterns)] as string[]
+          await Permission.ask({
+            id,
+            sessionID: SessionID.make(input.sessionID),
+            permission: "workflow_tool_approval",
+            patterns: uniquePatterns,
+            metadata: { tools: approvalTools },
+            always: uniquePatterns,
+            ruleset: [],
+          })
+          for (const name of uniqueNames) approvedToolsForSession.add(name)
+          workflowModel.sessionPreapprovedTools = [...(workflowModel.sessionPreapprovedTools ?? []), ...uniqueNames]
+          return { approved: true }
+        } catch {
+          return { approved: false }
+        } finally {
+          unsub?.()
+        }
+      })
     }
 
     return streamText({

packages/opencode/src/session/message-v2.ts

@@ -573,6 +573,12 @@ export namespace MessageV2 {
     }))
   }
 
+  function providerMeta(metadata: Record<string, any> | undefined) {
+    if (!metadata) return undefined
+    const { providerExecuted: _, ...rest } = metadata
+    return Object.keys(rest).length > 0 ? rest : undefined
+  }
+
   export const toModelMessagesEffect = Effect.fnUntraced(function* (
     input: WithParts[],
     model: Provider.Model,
@@ -741,18 +747,34 @@ export namespace MessageV2 {
                 toolCallId: part.callID,
                 input: part.state.input,
                 output,
-                ...(differentModel ? {} : { callProviderMetadata: part.metadata }),
+                ...(part.metadata?.providerExecuted ? { providerExecuted: true } : {}),
+                ...(differentModel ? {} : { callProviderMetadata: providerMeta(part.metadata) }),
               })
             }
-            if (part.state.status === "error")
-              assistantMessage.parts.push({
-                type: ("tool-" + part.tool) as `tool-${string}`,
-                state: "output-error",
-                toolCallId: part.callID,
-                input: part.state.input,
-                errorText: part.state.error,
-                ...(differentModel ? {} : { callProviderMetadata: part.metadata }),
-              })
+            if (part.state.status === "error") {
+              const output = part.state.metadata?.interrupted === true ? part.state.metadata.output : undefined
+              if (typeof output === "string") {
+                assistantMessage.parts.push({
+                  type: ("tool-" + part.tool) as `tool-${string}`,
+                  state: "output-available",
+                  toolCallId: part.callID,
+                  input: part.state.input,
+                  output,
+                  ...(part.metadata?.providerExecuted ? { providerExecuted: true } : {}),
+                  ...(differentModel ? {} : { callProviderMetadata: providerMeta(part.metadata) }),
+                })
+              } else {
+                assistantMessage.parts.push({
+                  type: ("tool-" + part.tool) as `tool-${string}`,
+                  state: "output-error",
+                  toolCallId: part.callID,
+                  input: part.state.input,
+                  errorText: part.state.error,
+                  ...(part.metadata?.providerExecuted ? { providerExecuted: true } : {}),
+                  ...(differentModel ? {} : { callProviderMetadata: providerMeta(part.metadata) }),
+                })
+              }
+            }
             // Handle pending/running tool calls to prevent dangling tool_use blocks
             // Anthropic/Claude APIs require every tool_use to have a corresponding tool_result
             if (part.state.status === "pending" || part.state.status === "running")
@@ -762,7 +784,8 @@ export namespace MessageV2 {
                 toolCallId: part.callID,
                 input: part.state.input,
                 errorText: "[Tool execution was interrupted]",
-                ...(differentModel ? {} : { callProviderMetadata: part.metadata }),
+                ...(part.metadata?.providerExecuted ? { providerExecuted: true } : {}),
+                ...(differentModel ? {} : { callProviderMetadata: providerMeta(part.metadata) }),
               })
           }
           if (part.type === "reasoning") {

packages/opencode/src/session/processor.ts

@@ -1,4 +1,4 @@
-import { Cause, Effect, Layer, ServiceMap } from "effect"
+import { Cause, Deferred, Effect, Layer, ServiceMap } from "effect"
 import * as Stream from "effect/Stream"
 import { Agent } from "@/agent/agent"
 import { Bus } from "@/bus"
@@ -18,6 +18,8 @@ import { SessionStatus } from "./status"
 import { SessionSummary } from "./summary"
 import type { Provider } from "@/provider/provider"
 import { Question } from "@/question"
+import { errorMessage } from "@/util/error"
+import { isRecord } from "@/util/record"
 
 export namespace SessionProcessor {
   const DOOM_LOOP_THRESHOLD = 3
@@ -29,8 +31,19 @@ export namespace SessionProcessor {
 
   export interface Handle {
     readonly message: MessageV2.Assistant
-    readonly partFromToolCall: (toolCallID: string) => MessageV2.ToolPart | undefined
-    readonly abort: () => Effect.Effect<void>
+    readonly updateToolCall: (
+      toolCallID: string,
+      update: (part: MessageV2.ToolPart) => MessageV2.ToolPart,
+    ) => Effect.Effect<MessageV2.ToolPart | undefined>
+    readonly completeToolCall: (
+      toolCallID: string,
+      output: {
+        title: string
+        metadata: Record<string, any>
+        output: string
+        attachments?: MessageV2.FilePart[]
+      },
+    ) => Effect.Effect<void>
     readonly process: (streamInput: LLM.StreamInput) => Effect.Effect<Result>
   }
 
@@ -44,8 +57,15 @@ export namespace SessionProcessor {
     readonly create: (input: Input) => Effect.Effect<Handle>
   }
 
+  type ToolCall = {
+    partID: MessageV2.ToolPart["id"]
+    messageID: MessageV2.ToolPart["messageID"]
+    sessionID: MessageV2.ToolPart["sessionID"]
+    done: Deferred.Deferred<void>
+  }
+
   interface ProcessorContext extends Input {
-    toolcalls: Record<string, MessageV2.ToolPart>
+    toolcalls: Record<string, ToolCall>
     shouldBreak: boolean
     snapshot: string | undefined
     blocked: boolean
@@ -108,6 +128,88 @@ export namespace SessionProcessor {
             aborted,
           })
 
+        const settleToolCall = Effect.fn("SessionProcessor.settleToolCall")(function* (toolCallID: string) {
+          const done = ctx.toolcalls[toolCallID]?.done
+          delete ctx.toolcalls[toolCallID]
+          if (done) yield* Deferred.succeed(done, undefined).pipe(Effect.ignore)
+        })
+
+        const readToolCall = Effect.fn("SessionProcessor.readToolCall")(function* (toolCallID: string) {
+          const call = ctx.toolcalls[toolCallID]
+          if (!call) return
+          const part = yield* session.getPart({
+            partID: call.partID,
+            messageID: call.messageID,
+            sessionID: call.sessionID,
+          })
+          if (!part || part.type !== "tool") {
+            delete ctx.toolcalls[toolCallID]
+            return
+          }
+          return { call, part }
+        })
+
+        const updateToolCall = Effect.fn("SessionProcessor.updateToolCall")(function* (
+          toolCallID: string,
+          update: (part: MessageV2.ToolPart) => MessageV2.ToolPart,
+        ) {
+          const match = yield* readToolCall(toolCallID)
+          if (!match) return
+          const part = yield* session.updatePart(update(match.part))
+          ctx.toolcalls[toolCallID] = {
+            ...match.call,
+            partID: part.id,
+            messageID: part.messageID,
+            sessionID: part.sessionID,
+          }
+          return part
+        })
+
+        const completeToolCall = Effect.fn("SessionProcessor.completeToolCall")(function* (
+          toolCallID: string,
+          output: {
+            title: string
+            metadata: Record<string, any>
+            output: string
+            attachments?: MessageV2.FilePart[]
+          },
+        ) {
+          const match = yield* readToolCall(toolCallID)
+          if (!match || match.part.state.status !== "running") return
+          yield* session.updatePart({
+            ...match.part,
+            state: {
+              status: "completed",
+              input: match.part.state.input,
+              output: output.output,
+              metadata: output.metadata,
+              title: output.title,
+              time: { start: match.part.state.time.start, end: Date.now() },
+              attachments: output.attachments,
+            },
+          })
+          yield* settleToolCall(toolCallID)
+        })
+
+        const failToolCall = Effect.fn("SessionProcessor.failToolCall")(function* (toolCallID: string, error: unknown) {
+          const match = yield* readToolCall(toolCallID)
+          if (!match || match.part.state.status !== "running") return false
+          yield* session.updatePart({
+            ...match.part,
+            state: {
+              status: "error",
+              input: match.part.state.input,
+              error: errorMessage(error),
+              time: { start: match.part.state.time.start, end: Date.now() },
+            },
+          })
+          if (error instanceof Permission.RejectedError || error instanceof Question.RejectedError) {
+            ctx.blocked = ctx.shouldBreak
+          }
+          yield* settleToolCall(toolCallID)
+          return true
+        })
+
         const handleEvent = Effect.fn("SessionProcessor.handleEvent")(function* (value: StreamEvent) {
           switch (value.type) {
             case "start":
@@ -154,15 +256,22 @@ export namespace SessionProcessor {
               if (ctx.assistantMessage.summary) {
                 throw new Error(`Tool call not allowed while generating summary: ${value.toolName}`)
               }
-              ctx.toolcalls[value.id] = yield* session.updatePart({
-                id: ctx.toolcalls[value.id]?.id ?? PartID.ascending(),
+              const part = yield* session.updatePart({
+                id: ctx.toolcalls[value.id]?.partID ?? PartID.ascending(),
                 messageID: ctx.assistantMessage.id,
                 sessionID: ctx.assistantMessage.sessionID,
                 type: "tool",
                 tool: value.toolName,
                 callID: value.id,
                 state: { status: "pending", input: {}, raw: "" },
+                metadata: value.providerExecuted ? { providerExecuted: true } : undefined,
               } satisfies MessageV2.ToolPart)
+              ctx.toolcalls[value.id] = {
+                done: yield* Deferred.make<void>(),
+                partID: part.id,
+                messageID: part.messageID,
+                sessionID: part.sessionID,
+              }
               return
 
             case "tool-input-delta":
@@ -175,14 +284,19 @@ export namespace SessionProcessor {
               if (ctx.assistantMessage.summary) {
                 throw new Error(`Tool call not allowed while generating summary: ${value.toolName}`)
               }
-              const match = ctx.toolcalls[value.toolCallId]
-              if (!match) return
-              ctx.toolcalls[value.toolCallId] = yield* session.updatePart({
+              yield* updateToolCall(value.toolCallId, (match) => ({
                 ...match,
                 tool: value.toolName,
-                state: { status: "running", input: value.input, time: { start: Date.now() } },
-                metadata: value.providerMetadata,
-              } satisfies MessageV2.ToolPart)
+                state: {
+                  ...match.state,
+                  status: "running",
+                  input: value.input,
+                  time: { start: Date.now() },
+                },
+                metadata: match.metadata?.providerExecuted
+                  ? { ...value.providerMetadata, providerExecuted: true }
+                  : value.providerMetadata,
+              }))
 
               const parts = MessageV2.parts(ctx.assistantMessage.id)
               const recentParts = parts.slice(-DOOM_LOOP_THRESHOLD)
@@ -213,40 +327,12 @@ export namespace SessionProcessor {
             }
 
             case "tool-result": {
-              const match = ctx.toolcalls[value.toolCallId]
-              if (!match || match.state.status !== "running") return
-              yield* session.updatePart({
-                ...match,
-                state: {
-                  status: "completed",
-                  input: value.input ?? match.state.input,
-                  output: value.output.output,
-                  metadata: value.output.metadata,
-                  title: value.output.title,
-                  time: { start: match.state.time.start, end: Date.now() },
-                  attachments: value.output.attachments,
-                },
-              })
-              delete ctx.toolcalls[value.toolCallId]
+              yield* completeToolCall(value.toolCallId, value.output)
               return
             }
 
             case "tool-error": {
-              const match = ctx.toolcalls[value.toolCallId]
-              if (!match || match.state.status !== "running") return
-              yield* session.updatePart({
-                ...match,
-                state: {
-                  status: "error",
-                  input: value.input ?? match.state.input,
-                  error: value.error instanceof Error ? value.error.message : String(value.error),
-                  time: { start: match.state.time.start, end: Date.now() },
-                },
-              })
-              if (value.error instanceof Permission.RejectedError || value.error instanceof Question.RejectedError) {
-                ctx.blocked = ctx.shouldBreak
-              }
-              delete ctx.toolcalls[value.toolCallId]
+              yield* failToolCall(value.toolCallId, value.error)
               return
             }
 
@@ -349,7 +435,10 @@ export namespace SessionProcessor {
                 },
                 { text: ctx.currentText.text },
               )).text
-              ctx.currentText.time = { start: Date.now(), end: Date.now() }
+              {
+                const end = Date.now()
+                ctx.currentText.time = { start: ctx.currentText.time?.start ?? end, end }
+              }
               if (value.providerMetadata) ctx.currentText.metadata = value.providerMetadata
               yield* session.updatePart(ctx.currentText)
               ctx.currentText = undefined
@@ -396,19 +485,30 @@ export namespace SessionProcessor {
           }
           ctx.reasoningMap = {}
 
-          const parts = MessageV2.parts(ctx.assistantMessage.id)
-          for (const part of parts) {
-            if (part.type !== "tool" || part.state.status === "completed" || part.state.status === "error") continue
+          yield* Effect.forEach(
+            Object.values(ctx.toolcalls),
+            (call) => Deferred.await(call.done).pipe(Effect.timeout("250 millis"), Effect.ignore),
+            { concurrency: "unbounded" },
+          )
+
+          for (const toolCallID of Object.keys(ctx.toolcalls)) {
+            const match = yield* readToolCall(toolCallID)
+            if (!match) continue
+            const part = match.part
+            const end = Date.now()
+            const metadata = "metadata" in part.state && isRecord(part.state.metadata) ? part.state.metadata : {}
             yield* session.updatePart({
               ...part,
               state: {
                 ...part.state,
                 status: "error",
                 error: "Tool execution aborted",
-                time: { start: Date.now(), end: Date.now() },
+                metadata: { ...metadata, interrupted: true },
+                time: { start: "time" in part.state ? part.state.time.start : end, end },
               },
             })
           }
+          ctx.toolcalls = {}
           ctx.assistantMessage.time.completed = Date.now()
           yield* session.updateMessage(ctx.assistantMessage)
         })
@@ -429,19 +529,6 @@ export namespace SessionProcessor {
           yield* status.set(ctx.sessionID, { type: "idle" })
         })
 
-        const abort = Effect.fn("SessionProcessor.abort")(() =>
-          Effect.gen(function* () {
-            if (!ctx.assistantMessage.error) {
-              yield* halt(new DOMException("Aborted", "AbortError"))
-            }
-            if (!ctx.assistantMessage.time.completed) {
-              yield* cleanup()
-              return
-            }
-            yield* session.updateMessage(ctx.assistantMessage)
-          }),
-        )
-
         const process = Effect.fn("SessionProcessor.process")(function* (streamInput: LLM.StreamInput) {
           log.info("process")
           ctx.needsCompaction = false
@@ -459,7 +546,14 @@ export namespace SessionProcessor {
                 Stream.runDrain,
               )
             }).pipe(
-              Effect.onInterrupt(() => Effect.sync(() => void (aborted = true))),
+              Effect.onInterrupt(() =>
+                Effect.gen(function* () {
+                  aborted = true
+                  if (!ctx.assistantMessage.error) {
+                    yield* halt(new DOMException("Aborted", "AbortError"))
+                  }
+                }),
+              ),
               Effect.catchCauseIf(
                 (cause) => !Cause.hasInterruptsOnly(cause),
                 (cause) => Effect.fail(Cause.squash(cause)),
@@ -480,23 +574,18 @@ export namespace SessionProcessor {
               Effect.ensuring(cleanup()),
             )
 
-            if (aborted && !ctx.assistantMessage.error) {
-              yield* abort()
-            }
             if (ctx.needsCompaction) return "compact"
-            if (ctx.blocked || ctx.assistantMessage.error || aborted) return "stop"
+            if (ctx.blocked || ctx.assistantMessage.error) return "stop"
             return "continue"
-          }).pipe(Effect.onInterrupt(() => abort().pipe(Effect.asVoid)))
+          })
         })
 
         return {
           get message() {
             return ctx.assistantMessage
           },
-          partFromToolCall(toolCallID: string) {
-            return ctx.toolcalls[toolCallID]
-          },
-          abort,
+          updateToolCall,
+          completeToolCall,
           process,
         } satisfies Handle
       })

packages/opencode/src/session/prompt.ts

@@ -20,7 +20,6 @@ import PROMPT_PLAN from "../session/prompt/plan.txt"
 import BUILD_SWITCH from "../session/prompt/build-switch.txt"
 import MAX_STEPS from "../session/prompt/max-steps.txt"
 import { ToolRegistry } from "../tool/registry"
-import { Runner } from "@/effect/runner"
 import { MCP } from "../mcp"
 import { LSP } from "../lsp"
 import { FileTime } from "../file/time"
@@ -46,8 +45,9 @@ import { decodeDataUrl } from "@/util/data-url"
 import { Process } from "@/util/process"
 import { Cause, Effect, Exit, Layer, Option, Scope, ServiceMap } from "effect"
 import { InstanceState } from "@/effect/instance-state"
-import { makeRuntime } from "@/effect/run-service"
+import { attach, makeRuntime } from "@/effect/run-service"
 import { TaskTool } from "@/tool/task"
+import { SessionRunState } from "./run-state"
 
 // @ts-ignore
 globalThis.AI_SDK_LOG_WARNINGS = false
@@ -62,11 +62,68 @@ IMPORTANT:
 
 const STRUCTURED_OUTPUT_SYSTEM_PROMPT = `IMPORTANT: The user has requested structured output. You MUST use the StructuredOutput tool to provide your final response. Do NOT respond with plain text - you MUST call the StructuredOutput tool with your answer formatted according to the schema.`
 
+/**
+ * Bridges an AI SDK Promise-based `execute` callback to Effect with graceful
+ * cancel semantics.
+ *
+ * On the happy path: runs `before`, awaits `execute()`, then `finalize(result)`
+ * and returns the output.
+ *
+ * On cancel mid-flight: the `onInterrupt` finalizer re-awaits the same in-flight
+ * native Promise uninterruptibly, runs `finalize` again on the eventual result,
+ * and posts it via `onCancel` (the processor side channel). This is what lets
+ * cancelled bash surface its truncated output through the normal completion
+ * path instead of getting stamped as aborted by processor cleanup.
+ *
+ * The returned Promise always resolves with a finalized output when one is
+ * available (even on interrupt), so the SDK reports the tool as successfully
+ * completed rather than as a tool-error.
+ *
+ * `attach` captures the current Instance context via InstanceRef so the
+ * onInterrupt finalizer — which runs outside the AsyncLocalStorage chain
+ * `execute()` is called from — can still resolve it through the ServiceMap.
+ */
+function runToolExecute<Raw, Output>(options: {
+  signal: AbortSignal | undefined
+  before: Effect.Effect<unknown, any, any>
+  execute: () => Promise<Raw>
+  finalize: (result: Raw) => Effect.Effect<Output, any, any>
+  onCancel: (output: Output) => Effect.Effect<unknown, any, any>
+}): Promise<Output> {
+  let pending: Promise<Raw> | undefined
+  let rescued: Output | undefined
+  const wait = Effect.promise(() => pending!)
+
+  const program = Effect.gen(function* () {
+    yield* options.before
+    pending = options.execute()
+    const result = yield* wait
+    return yield* options.finalize(result)
+  }).pipe(
+    // On interrupt, re-await the in-flight Promise uninterruptibly (finalizers
+    // always are), finalize it the same way, and post through the side channel.
+    // Stash the output so catchCause below can surface it instead of the cause.
+    Effect.onInterrupt(() =>
+      Effect.gen(function* () {
+        if (pending === undefined) return
+        const result = yield* wait
+        const output = yield* options.finalize(result)
+        rescued = output
+        yield* options.onCancel(output)
+      }).pipe(Effect.catchCause(() => Effect.void)),
+    ),
+    Effect.catchCause((cause) =>
+      Effect.suspend(() => (rescued !== undefined ? Effect.succeed(rescued!) : Effect.failCause(cause))),
+    ),
+  )
+
+  return Effect.runPromise(attach(program as Effect.Effect<Output>), { signal: options.signal })
+}
+
 export namespace SessionPrompt {
   const log = Log.create({ service: "session.prompt" })
 
   export interface Interface {
-    readonly assertNotBusy: (sessionID: SessionID) => Effect.Effect<void, Session.BusyError>
     readonly cancel: (sessionID: SessionID) => Effect.Effect<void>
     readonly prompt: (input: PromptInput) => Effect.Effect<MessageV2.WithParts>
     readonly loop: (input: z.infer<typeof LoopInput>) => Effect.Effect<MessageV2.WithParts>
@@ -99,55 +156,11 @@ export namespace SessionPrompt {
       const spawner = yield* ChildProcessSpawner.ChildProcessSpawner
       const scope = yield* Scope.Scope
       const instruction = yield* Instruction.Service
-
-      const state = yield* InstanceState.make(
-        Effect.fn("SessionPrompt.state")(function* () {
-          const runners = new Map<string, Runner<MessageV2.WithParts>>()
-          yield* Effect.addFinalizer(
-            Effect.fnUntraced(function* () {
-              yield* Effect.forEach(runners.values(), (r) => r.cancel, { concurrency: "unbounded", discard: true })
-              runners.clear()
-            }),
-          )
-          return { runners }
-        }),
-      )
-
-      const getRunner = (runners: Map<string, Runner<MessageV2.WithParts>>, sessionID: SessionID) => {
-        const existing = runners.get(sessionID)
-        if (existing) return existing
-        const runner = Runner.make<MessageV2.WithParts>(scope, {
-          onIdle: Effect.gen(function* () {
-            runners.delete(sessionID)
-            yield* status.set(sessionID, { type: "idle" })
-          }),
-          onBusy: status.set(sessionID, { type: "busy" }),
-          onInterrupt: lastAssistant(sessionID),
-          busy: () => {
-            throw new Session.BusyError(sessionID)
-          },
-        })
-        runners.set(sessionID, runner)
-        return runner
-      }
-
-      const assertNotBusy: (sessionID: SessionID) => Effect.Effect<void, Session.BusyError> = Effect.fn(
-        "SessionPrompt.assertNotBusy",
-      )(function* (sessionID: SessionID) {
-        const s = yield* InstanceState.get(state)
-        const runner = s.runners.get(sessionID)
-        if (runner?.busy) throw new Session.BusyError(sessionID)
-      })
+      const state = yield* SessionRunState.Service
 
       const cancel = Effect.fn("SessionPrompt.cancel")(function* (sessionID: SessionID) {
         log.info("cancel", { sessionID })
-        const s = yield* InstanceState.get(state)
-        const runner = s.runners.get(sessionID)
-        if (!runner || !runner.busy) {
-          yield* status.set(sessionID, { type: "idle" })
-          return
-        }
-        yield* runner.cancel
+        yield* state.cancel(sessionID)
       })
 
       const resolvePromptParts = Effect.fn("SessionPrompt.resolvePromptParts")(function* (template: string) {
@@ -388,7 +401,7 @@ NOTE: At any point in time through this workflow you should feel free to ask the
         model: Provider.Model
         session: Session.Info
         tools?: Record<string, boolean>
-        processor: Pick<SessionProcessor.Handle, "message" | "partFromToolCall">
+        processor: Pick<SessionProcessor.Handle, "message" | "updateToolCall" | "completeToolCall">
         bypassAgentCheck: boolean
         messages: MessageV2.WithParts[]
       }) {
@@ -405,10 +418,9 @@ NOTE: At any point in time through this workflow you should feel free to ask the
           messages: input.messages,
           metadata: (val) =>
             Effect.runPromise(
-              Effect.gen(function* () {
-                const match = input.processor.partFromToolCall(options.toolCallId)
-                if (!match || !["running", "pending"].includes(match.state.status)) return
-                yield* sessions.updatePart({
+              input.processor.updateToolCall(options.toolCallId, (match) => {
+                if (!["running", "pending"].includes(match.state.status)) return match
+                return {
                   ...match,
                   state: {
                     title: val.title,
@@ -417,7 +429,7 @@ NOTE: At any point in time through this workflow you should feel free to ask the
                     input: args,
                     time: { start: Date.now() },
                   },
-                })
+                }
               }),
             ),
           ask: (req) =>
@@ -442,32 +454,28 @@ NOTE: At any point in time through this workflow you should feel free to ask the
             description: item.description,
             inputSchema: jsonSchema(schema as any),
             execute(args, options) {
-              return Effect.runPromise(
-                Effect.gen(function* () {
-                  const ctx = context(args, options)
-                  yield* plugin.trigger(
-                    "tool.execute.before",
-                    { tool: item.id, sessionID: ctx.sessionID, callID: ctx.callID },
-                    { args },
-                  )
-                  const result = yield* Effect.promise(() => item.execute(args, ctx))
-                  const output = {
-                    ...result,
-                    attachments: result.attachments?.map((attachment) => ({
-                      ...attachment,
-                      id: PartID.ascending(),
-                      sessionID: ctx.sessionID,
-                      messageID: input.processor.message.id,
-                    })),
-                  }
-                  yield* plugin.trigger(
-                    "tool.execute.after",
-                    { tool: item.id, sessionID: ctx.sessionID, callID: ctx.callID, args },
-                    output,
-                  )
-                  return output
-                }),
-              )
+              const ctx = context(args, options)
+              const meta = { tool: item.id, sessionID: ctx.sessionID, callID: ctx.callID }
+              return runToolExecute({
+                signal: options.abortSignal,
+                before: plugin.trigger("tool.execute.before", meta, { args }),
+                execute: () => item.execute(args, ctx),
+                finalize: (result) =>
+                  Effect.gen(function* () {
+                    const output = {
+                      ...result,
+                      attachments: result.attachments?.map((attachment) => ({
+                        ...attachment,
+                        id: PartID.ascending(),
+                        sessionID: ctx.sessionID,
+                        messageID: input.processor.message.id,
+                      })),
+                    }
+                    yield* plugin.trigger("tool.execute.after", { ...meta, args }, output)
+                    return output
+                  }),
+                onCancel: (output) => input.processor.completeToolCall(options.toolCallId, output),
+              })
             },
           })
         }
@@ -479,70 +487,64 @@ NOTE: At any point in time through this workflow you should feel free to ask the
           const schema = yield* Effect.promise(() => Promise.resolve(asSchema(item.inputSchema).jsonSchema))
           const transformed = ProviderTransform.schema(input.model, schema)
           item.inputSchema = jsonSchema(transformed)
-          item.execute = (args, opts) =>
-            Effect.runPromise(
-              Effect.gen(function* () {
-                const ctx = context(args, opts)
-                yield* plugin.trigger(
-                  "tool.execute.before",
-                  { tool: key, sessionID: ctx.sessionID, callID: opts.toolCallId },
-                  { args },
-                )
+          item.execute = (args, opts) => {
+            const ctx = context(args, opts)
+            const meta = { tool: key, sessionID: ctx.sessionID, callID: opts.toolCallId }
+            type Raw = Awaited<ReturnType<NonNullable<typeof execute>>>
+            return runToolExecute({
+              signal: opts.abortSignal,
+              before: Effect.gen(function* () {
+                yield* plugin.trigger("tool.execute.before", meta, { args })
                 yield* Effect.promise(() => ctx.ask({ permission: key, metadata: {}, patterns: ["*"], always: ["*"] }))
-                const result: Awaited<ReturnType<NonNullable<typeof execute>>> = yield* Effect.promise(() =>
-                  execute(args, opts),
-                )
-                yield* plugin.trigger(
-                  "tool.execute.after",
-                  { tool: key, sessionID: ctx.sessionID, callID: opts.toolCallId, args },
-                  result,
-                )
-
-                const textParts: string[] = []
-                const attachments: Omit<MessageV2.FilePart, "id" | "sessionID" | "messageID">[] = []
-                for (const contentItem of result.content) {
-                  if (contentItem.type === "text") textParts.push(contentItem.text)
-                  else if (contentItem.type === "image") {
-                    attachments.push({
-                      type: "file",
-                      mime: contentItem.mimeType,
-                      url: `data:${contentItem.mimeType};base64,${contentItem.data}`,
-                    })
-                  } else if (contentItem.type === "resource") {
-                    const { resource } = contentItem
-                    if (resource.text) textParts.push(resource.text)
-                    if (resource.blob) {
+              }),
+              execute: (): Promise<Raw> => execute(args, opts),
+              finalize: (result) =>
+                Effect.gen(function* () {
+                  yield* plugin.trigger("tool.execute.after", { ...meta, args }, result)
+                  const textParts: string[] = []
+                  const attachments: Omit<MessageV2.FilePart, "id" | "sessionID" | "messageID">[] = []
+                  for (const contentItem of result.content) {
+                    if (contentItem.type === "text") textParts.push(contentItem.text)
+                    else if (contentItem.type === "image") {
                       attachments.push({
                         type: "file",
-                        mime: resource.mimeType ?? "application/octet-stream",
-                        url: `data:${resource.mimeType ?? "application/octet-stream"};base64,${resource.blob}`,
-                        filename: resource.uri,
+                        mime: contentItem.mimeType,
+                        url: `data:${contentItem.mimeType};base64,${contentItem.data}`,
                       })
+                    } else if (contentItem.type === "resource") {
+                      const { resource } = contentItem
+                      if (resource.text) textParts.push(resource.text)
+                      if (resource.blob) {
+                        attachments.push({
+                          type: "file",
+                          mime: resource.mimeType ?? "application/octet-stream",
+                          url: `data:${resource.mimeType ?? "application/octet-stream"};base64,${resource.blob}`,
+                          filename: resource.uri,
+                        })
+                      }
                     }
                   }
-                }
-
-                const truncated = yield* truncate.output(textParts.join("\n\n"), {}, input.agent)
-                const metadata = {
-                  ...(result.metadata ?? {}),
-                  truncated: truncated.truncated,
-                  ...(truncated.truncated && { outputPath: truncated.outputPath }),
-                }
-
-                return {
-                  title: "",
-                  metadata,
-                  output: truncated.content,
-                  attachments: attachments.map((attachment) => ({
-                    ...attachment,
-                    id: PartID.ascending(),
-                    sessionID: ctx.sessionID,
-                    messageID: input.processor.message.id,
-                  })),
-                  content: result.content,
-                }
-              }),
-            )
+                  const truncated = yield* truncate.output(textParts.join("\n\n"), {}, input.agent)
+                  return {
+                    title: "",
+                    metadata: {
+                      ...(result.metadata ?? {}),
+                      truncated: truncated.truncated,
+                      ...(truncated.truncated && { outputPath: truncated.outputPath }),
+                    },
+                    output: truncated.content,
+                    attachments: attachments.map((attachment) => ({
+                      ...attachment,
+                      id: PartID.ascending(),
+                      sessionID: ctx.sessionID,
+                      messageID: input.processor.message.id,
+                    })),
+                    content: result.content,
+                  }
+                }),
+              onCancel: (output) => input.processor.completeToolCall(opts.toolCallId, output),
+            })
+          }
           tools[key] = item
         }
 
@@ -559,7 +561,7 @@ NOTE: At any point in time through this workflow you should feel free to ask the
       }) {
         const { task, model, lastUser, sessionID, session, msgs } = input
         const ctx = yield* InstanceState.context
-        const taskTool = yield* registry.fromID(TaskTool.id)
+        const { task: taskTool } = yield* registry.named()
         const taskModel = task.model ? yield* getModel(task.model.providerID, task.model.modelID, sessionID) : model
         const assistantMessage: MessageV2.Assistant = yield* sessions.updateMessage({
           id: MessageID.ascending(),
@@ -600,7 +602,11 @@ NOTE: At any point in time through this workflow you should feel free to ask the
           subagent_type: task.agent,
           command: task.command,
         }
-        yield* plugin.trigger("tool.execute.before", { tool: "task", sessionID, callID: part.id }, { args: taskArgs })
+        yield* plugin.trigger(
+          "tool.execute.before",
+          { tool: TaskTool.id, sessionID, callID: part.id },
+          { args: taskArgs },
+        )
 
         const taskAgent = yield* agents.get(task.agent)
         if (!taskAgent) {
@@ -679,7 +685,7 @@ NOTE: At any point in time through this workflow you should feel free to ask the
 
         yield* plugin.trigger(
           "tool.execute.after",
-          { tool: "task", sessionID, callID: part.id, args: taskArgs },
+          { tool: TaskTool.id, sessionID, callID: part.id, args: taskArgs },
           result,
         )
 
@@ -739,7 +745,7 @@ NOTE: At any point in time through this workflow you should feel free to ask the
         } satisfies MessageV2.TextPart)
       })
 
-      const shellImpl = Effect.fn("SessionPrompt.shellImpl")(function* (input: ShellInput, signal: AbortSignal) {
+      const shellImpl = Effect.fn("SessionPrompt.shellImpl")(function* (input: ShellInput) {
         const ctx = yield* InstanceState.context
         const session = yield* sessions.get(input.sessionID)
         if (session.revert) {
@@ -960,9 +966,7 @@ NOTE: At any point in time through this workflow you should feel free to ask the
         const same = ag.model && model.providerID === ag.model.providerID && model.modelID === ag.model.modelID
         const full =
           !input.variant && ag.variant && same
-            ? yield* provider
-                .getModel(model.providerID, model.modelID)
-                .pipe(Effect.catch(() => Effect.succeed(undefined)))
+            ? yield* provider.getModel(model.providerID, model.modelID).pipe(Effect.catchDefect(() => Effect.void))
             : undefined
         const variant = input.variant ?? (ag.variant && full?.variants?.[ag.variant] ? ag.variant : undefined)
 
@@ -982,9 +986,7 @@ NOTE: At any point in time through this workflow you should feel free to ask the
           format: input.format,
         }
 
-        yield* Effect.addFinalizer(() =>
-          InstanceState.withALS(() => instruction.clear(info.id)).pipe(Effect.flatMap((x) => x)),
-        )
+        yield* Effect.addFinalizer(() => instruction.clear(info.id))
 
         type Draft<T> = T extends MessageV2.Part ? Omit<T, "id"> & { id?: string } : never
         const assign = (part: Draft<MessageV2.Part>): MessageV2.Part => ({
@@ -1076,6 +1078,21 @@ NOTE: At any point in time through this workflow you should feel free to ask the
                 const filepath = fileURLToPath(part.url)
                 if (yield* fsys.isDir(filepath)) part.mime = "application/x-directory"
 
+                const { read } = yield* registry.named()
+                const execRead = (args: Parameters<typeof read.execute>[0], extra?: Tool.Context["extra"]) =>
+                  Effect.promise((signal: AbortSignal) =>
+                    read.execute(args, {
+                      sessionID: input.sessionID,
+                      abort: signal,
+                      agent: input.agent!,
+                      messageID: info.id,
+                      extra: { bypassCwdCheck: true, ...extra },
+                      messages: [],
+                      metadata: async () => {},
+                      ask: async () => {},
+                    }),
+                  )
+
                 if (part.mime === "text/plain") {
                   let offset: number | undefined
                   let limit: number | undefined
@@ -1112,29 +1129,12 @@ NOTE: At any point in time through this workflow you should feel free to ask the
                       text: `Called the Read tool with the following input: ${JSON.stringify(args)}`,
                     },
                   ]
-                  const read = yield* registry.fromID("read").pipe(
-                    Effect.flatMap((t) =>
-                      provider.getModel(info.model.providerID, info.model.modelID).pipe(
-                        Effect.flatMap((mdl) =>
-                          Effect.promise(() =>
-                            t.execute(args, {
-                              sessionID: input.sessionID,
-                              abort: new AbortController().signal,
-                              agent: input.agent!,
-                              messageID: info.id,
-                              extra: { bypassCwdCheck: true, model: mdl },
-                              messages: [],
-                              metadata: async () => {},
-                              ask: async () => {},
-                            }),
-                          ),
-                        ),
-                      ),
-                    ),
+                  const exit = yield* provider.getModel(info.model.providerID, info.model.modelID).pipe(
+                    Effect.flatMap((mdl) => execRead(args, { model: mdl })),
                     Effect.exit,
                   )
-                  if (Exit.isSuccess(read)) {
-                    const result = read.value
+                  if (Exit.isSuccess(exit)) {
+                    const result = exit.value
                     pieces.push({
                       messageID: info.id,
                       sessionID: input.sessionID,
@@ -1156,7 +1156,7 @@ NOTE: At any point in time through this workflow you should feel free to ask the
                       pieces.push({ ...part, messageID: info.id, sessionID: input.sessionID })
                     }
                   } else {
-                    const error = Cause.squash(read.cause)
+                    const error = Cause.squash(exit.cause)
                     log.error("failed to read file", { error })
                     const message = error instanceof Error ? error.message : String(error)
                     yield* bus.publish(Session.Event.Error, {
@@ -1176,22 +1176,25 @@ NOTE: At any point in time through this workflow you should feel free to ask the
 
                 if (part.mime === "application/x-directory") {
                   const args = { filePath: filepath }
-                  const result = yield* registry.fromID("read").pipe(
-                    Effect.flatMap((t) =>
-                      Effect.promise(() =>
-                        t.execute(args, {
-                          sessionID: input.sessionID,
-                          abort: new AbortController().signal,
-                          agent: input.agent!,
-                          messageID: info.id,
-                          extra: { bypassCwdCheck: true },
-                          messages: [],
-                          metadata: async () => {},
-                          ask: async () => {},
-                        }),
-                      ),
-                    ),
-                  )
+                  const exit = yield* execRead(args).pipe(Effect.exit)
+                  if (Exit.isFailure(exit)) {
+                    const error = Cause.squash(exit.cause)
+                    log.error("failed to read directory", { error })
+                    const message = error instanceof Error ? error.message : String(error)
+                    yield* bus.publish(Session.Event.Error, {
+                      sessionID: input.sessionID,
+                      error: new NamedError.Unknown({ message }).toObject(),
+                    })
+                    return [
+                      {
+                        messageID: info.id,
+                        sessionID: input.sessionID,
+                        type: "text",
+                        synthetic: true,
+                        text: `Read tool failed to read ${filepath} with the following error: ${message}`,
+                      },
+                    ]
+                  }
                   return [
                     {
                       messageID: info.id,
@@ -1205,7 +1208,7 @@ NOTE: At any point in time through this workflow you should feel free to ask the
                       sessionID: input.sessionID,
                       type: "text",
                       synthetic: true,
-                      text: result.output,
+                      text: exit.value.output,
                     },
                     { ...part, messageID: info.id, sessionID: input.sessionID },
                   ]
@@ -1370,7 +1373,10 @@ NOTE: At any point in time through this workflow you should feel free to ask the
             )
             // Some providers return "stop" even when the assistant message contains tool calls.
             // Keep the loop running so tool results can be sent back to the model.
-            const hasToolCalls = lastAssistantMsg?.parts.some((part) => part.type === "tool") ?? false
+            // Skip provider-executed tool parts — those were fully handled within the
+            // provider's stream (e.g. DWS Agent Platform) and don't need a re-loop.
+            const hasToolCalls =
+              lastAssistantMsg?.parts.some((part) => part.type === "tool" && !part.metadata?.providerExecuted) ?? false
 
             if (
               lastAssistant?.finish &&
@@ -1454,110 +1460,104 @@ NOTE: At any point in time through this workflow you should feel free to ask the
               model,
             })
 
-            const outcome: "break" | "continue" = yield* Effect.onExit(
-              Effect.gen(function* () {
-                const lastUserMsg = msgs.findLast((m) => m.info.role === "user")
-                const bypassAgentCheck = lastUserMsg?.parts.some((p) => p.type === "agent") ?? false
+            const outcome: "break" | "continue" = yield* Effect.gen(function* () {
+              const lastUserMsg = msgs.findLast((m) => m.info.role === "user")
+              const bypassAgentCheck = lastUserMsg?.parts.some((p) => p.type === "agent") ?? false
 
-                const tools = yield* resolveTools({
-                  agent,
-                  session,
-                  model,
-                  tools: lastUser.tools,
-                  processor: handle,
-                  bypassAgentCheck,
-                  messages: msgs,
+              const tools = yield* resolveTools({
+                agent,
+                session,
+                model,
+                tools: lastUser.tools,
+                processor: handle,
+                bypassAgentCheck,
+                messages: msgs,
+              })
+
+              if (lastUser.format?.type === "json_schema") {
+                tools["StructuredOutput"] = createStructuredOutputTool({
+                  schema: lastUser.format.schema,
+                  onSuccess(output) {
+                    structured = output
+                  },
                 })
+              }
 
-                if (lastUser.format?.type === "json_schema") {
-                  tools["StructuredOutput"] = createStructuredOutputTool({
-                    schema: lastUser.format.schema,
-                    onSuccess(output) {
-                      structured = output
-                    },
-                  })
-                }
+              if (step === 1) SessionSummary.summarize({ sessionID, messageID: lastUser.id })
 
-                if (step === 1) SessionSummary.summarize({ sessionID, messageID: lastUser.id })
-
-                if (step > 1 && lastFinished) {
-                  for (const m of msgs) {
-                    if (m.info.role !== "user" || m.info.id <= lastFinished.id) continue
-                    for (const p of m.parts) {
-                      if (p.type !== "text" || p.ignored || p.synthetic) continue
-                      if (!p.text.trim()) continue
-                      p.text = [
-                        "<system-reminder>",
-                        "The user sent the following message:",
-                        p.text,
-                        "",
-                        "Please address this message and continue with your tasks.",
-                        "</system-reminder>",
-                      ].join("\n")
-                    }
+              if (step > 1 && lastFinished) {
+                for (const m of msgs) {
+                  if (m.info.role !== "user" || m.info.id <= lastFinished.id) continue
+                  for (const p of m.parts) {
+                    if (p.type !== "text" || p.ignored || p.synthetic) continue
+                    if (!p.text.trim()) continue
+                    p.text = [
+                      "<system-reminder>",
+                      "The user sent the following message:",
+                      p.text,
+                      "",
+                      "Please address this message and continue with your tasks.",
+                      "</system-reminder>",
+                    ].join("\n")
                   }
                 }
+              }
 
-                yield* plugin.trigger("experimental.chat.messages.transform", {}, { messages: msgs })
+              yield* plugin.trigger("experimental.chat.messages.transform", {}, { messages: msgs })
 
-                const [skills, env, instructions, modelMsgs] = yield* Effect.all([
-                  Effect.promise(() => SystemPrompt.skills(agent)),
-                  Effect.promise(() => SystemPrompt.environment(model)),
-                  instruction.system().pipe(Effect.orDie),
-                  Effect.promise(() => MessageV2.toModelMessages(msgs, model)),
-                ])
-                const system = [...env, ...(skills ? [skills] : []), ...instructions]
-                const format = lastUser.format ?? { type: "text" as const }
-                if (format.type === "json_schema") system.push(STRUCTURED_OUTPUT_SYSTEM_PROMPT)
-                const result = yield* handle.process({
-                  user: lastUser,
-                  agent,
-                  permission: session.permission,
-                  sessionID,
-                  parentSessionID: session.parentID,
-                  system,
-                  messages: [...modelMsgs, ...(isLastStep ? [{ role: "assistant" as const, content: MAX_STEPS }] : [])],
-                  tools,
-                  model,
-                  toolChoice: format.type === "json_schema" ? "required" : undefined,
-                })
+              const [skills, env, instructions, modelMsgs] = yield* Effect.all([
+                Effect.promise(() => SystemPrompt.skills(agent)),
+                Effect.promise(() => SystemPrompt.environment(model)),
+                instruction.system().pipe(Effect.orDie),
+                MessageV2.toModelMessagesEffect(msgs, model),
+              ])
+              const system = [...env, ...(skills ? [skills] : []), ...instructions]
+              const format = lastUser.format ?? { type: "text" as const }
+              if (format.type === "json_schema") system.push(STRUCTURED_OUTPUT_SYSTEM_PROMPT)
+              const result = yield* handle.process({
+                user: lastUser,
+                agent,
+                permission: session.permission,
+                sessionID,
+                parentSessionID: session.parentID,
+                system,
+                messages: [...modelMsgs, ...(isLastStep ? [{ role: "assistant" as const, content: MAX_STEPS }] : [])],
+                tools,
+                model,
+                toolChoice: format.type === "json_schema" ? "required" : undefined,
+              })
 
-                if (structured !== undefined) {
-                  handle.message.structured = structured
-                  handle.message.finish = handle.message.finish ?? "stop"
+              if (structured !== undefined) {
+                handle.message.structured = structured
+                handle.message.finish = handle.message.finish ?? "stop"
+                yield* sessions.updateMessage(handle.message)
+                return "break" as const
+              }
+
+              const finished = handle.message.finish && !["tool-calls", "unknown"].includes(handle.message.finish)
+              if (finished && !handle.message.error) {
+                if (format.type === "json_schema") {
+                  handle.message.error = new MessageV2.StructuredOutputError({
+                    message: "Model did not produce structured output",
+                    retries: 0,
+                  }).toObject()
                   yield* sessions.updateMessage(handle.message)
                   return "break" as const
                 }
+              }
 
-                const finished = handle.message.finish && !["tool-calls", "unknown"].includes(handle.message.finish)
-                if (finished && !handle.message.error) {
-                  if (format.type === "json_schema") {
-                    handle.message.error = new MessageV2.StructuredOutputError({
-                      message: "Model did not produce structured output",
-                      retries: 0,
-                    }).toObject()
-                    yield* sessions.updateMessage(handle.message)
-                    return "break" as const
-                  }
-                }
-
-                if (result === "stop") return "break" as const
-                if (result === "compact") {
-                  yield* compaction.create({
-                    sessionID,
-                    agent: lastUser.agent,
-                    model: lastUser.model,
-                    auto: true,
-                    overflow: !handle.message.finish,
-                  })
-                }
-                return "continue" as const
-              }),
-              Effect.fnUntraced(function* (exit) {
-                if (Exit.isFailure(exit) && Cause.hasInterruptsOnly(exit.cause)) yield* handle.abort()
-                yield* InstanceState.withALS(() => instruction.clear(handle.message.id)).pipe(Effect.flatMap((x) => x))
-              }),
-            )
+              if (result === "stop") return "break" as const
+              if (result === "compact") {
+                yield* compaction.create({
+                  sessionID,
+                  agent: lastUser.agent,
+                  model: lastUser.model,
+                  auto: true,
+                  overflow: !handle.message.finish,
+                })
+              }
+              return "continue" as const
+            }).pipe(Effect.ensuring(instruction.clear(handle.message.id)))
             if (outcome === "break") break
             continue
           }
@@ -1570,16 +1570,12 @@ NOTE: At any point in time through this workflow you should feel free to ask the
       const loop: (input: z.infer<typeof LoopInput>) => Effect.Effect<MessageV2.WithParts> = Effect.fn(
         "SessionPrompt.loop",
       )(function* (input: z.infer<typeof LoopInput>) {
-        const s = yield* InstanceState.get(state)
-        const runner = getRunner(s.runners, input.sessionID)
-        return yield* runner.ensureRunning(runLoop(input.sessionID))
+        return yield* state.ensureRunning(input.sessionID, lastAssistant(input.sessionID), runLoop(input.sessionID))
       })
 
       const shell: (input: ShellInput) => Effect.Effect<MessageV2.WithParts> = Effect.fn("SessionPrompt.shell")(
         function* (input: ShellInput) {
-          const s = yield* InstanceState.get(state)
-          const runner = getRunner(s.runners, input.sessionID)
-          return yield* runner.startShell((signal) => shellImpl(input, signal))
+          return yield* state.startShell(input.sessionID, lastAssistant(input.sessionID), shellImpl(input))
         },
       )
 
@@ -1700,7 +1696,6 @@ NOTE: At any point in time through this workflow you should feel free to ask the
       })
 
       return Service.of({
-        assertNotBusy,
         cancel,
         prompt,
         loop,
@@ -1714,6 +1709,7 @@ NOTE: At any point in time through this workflow you should feel free to ask the
   const defaultLayer = Layer.unwrap(
     Effect.sync(() =>
       layer.pipe(
+        Layer.provide(SessionRunState.layer),
         Layer.provide(SessionStatus.layer),
         Layer.provide(SessionCompaction.defaultLayer),
         Layer.provide(SessionProcessor.defaultLayer),
@@ -1737,10 +1733,6 @@ NOTE: At any point in time through this workflow you should feel free to ask the
   )
   const { runPromise } = makeRuntime(Service, defaultLayer)
 
-  export async function assertNotBusy(sessionID: SessionID) {
-    return runPromise((svc) => svc.assertNotBusy(SessionID.zod.parse(sessionID)))
-  }
-
   export const PromptInput = z.object({
     sessionID: SessionID.zod,
     messageID: MessageID.zod.optional(),

packages/opencode/src/session/retry.ts

@@ -6,6 +6,10 @@ import { iife } from "@/util/iife"
 export namespace SessionRetry {
   export type Err = ReturnType<NamedError["toObject"]>
 
+  // This exported message is shared with the TUI upsell detector. Matching on a
+  // literal error string kind of sucks, but it is the simplest for now.
+  export const GO_UPSELL_MESSAGE = "Free usage exceeded, subscribe to Go https://opencode.ai/go"
+
   export const RETRY_INITIAL_DELAY = 2000
   export const RETRY_BACKOFF_FACTOR = 2
   export const RETRY_MAX_DELAY_NO_HEADERS = 30_000 // 30 seconds
@@ -53,8 +57,7 @@ export namespace SessionRetry {
     if (MessageV2.ContextOverflowError.isInstance(error)) return undefined
     if (MessageV2.APIError.isInstance(error)) {
       if (!error.data.isRetryable) return undefined
-      if (error.data.responseBody?.includes("FreeUsageLimitError"))
-        return `Free usage exceeded, subscribe to Go https://opencode.ai/go`
+      if (error.data.responseBody?.includes("FreeUsageLimitError")) return GO_UPSELL_MESSAGE
       return error.data.message.includes("Overloaded") ? "Provider is overloaded" : error.data.message
     }
 

packages/opencode/src/session/revert.ts

@@ -9,8 +9,9 @@ import { Log } from "../util/log"
 import { Session } from "."
 import { MessageV2 } from "./message-v2"
 import { SessionID, MessageID, PartID } from "./schema"
-import { SessionPrompt } from "./prompt"
+import { SessionRunState } from "./run-state"
 import { SessionSummary } from "./summary"
+import { SessionStatus } from "./status"
 
 export namespace SessionRevert {
   const log = Log.create({ service: "session.revert" })
@@ -38,9 +39,10 @@ export namespace SessionRevert {
       const storage = yield* Storage.Service
       const bus = yield* Bus.Service
       const summary = yield* SessionSummary.Service
+      const state = yield* SessionRunState.Service
 
       const revert = Effect.fn("SessionRevert.revert")(function* (input: RevertInput) {
-        yield* Effect.promise(() => SessionPrompt.assertNotBusy(input.sessionID))
+        yield* state.assertNotBusy(input.sessionID)
         const all = yield* sessions.messages({ sessionID: input.sessionID })
         let lastUser: MessageV2.User | undefined
         const session = yield* sessions.get(input.sessionID)
@@ -93,7 +95,7 @@ export namespace SessionRevert {
 
       const unrevert = Effect.fn("SessionRevert.unrevert")(function* (input: { sessionID: SessionID }) {
         log.info("unreverting", input)
-        yield* Effect.promise(() => SessionPrompt.assertNotBusy(input.sessionID))
+        yield* state.assertNotBusy(input.sessionID)
         const session = yield* sessions.get(input.sessionID)
         if (!session.revert) return session
         if (session.revert.snapshot) yield* snap.restore(session.revert!.snapshot!)
@@ -151,6 +153,8 @@ export namespace SessionRevert {
   export const defaultLayer = Layer.unwrap(
     Effect.sync(() =>
       layer.pipe(
+        Layer.provide(SessionRunState.layer),
+        Layer.provide(SessionStatus.layer),
         Layer.provide(Session.defaultLayer),
         Layer.provide(Snapshot.defaultLayer),
         Layer.provide(Storage.defaultLayer),

packages/opencode/src/session/run-state.ts

@@ -0,0 +1,114 @@
+import { InstanceState } from "@/effect/instance-state"
+import { Runner } from "@/effect/runner"
+import { makeRuntime } from "@/effect/run-service"
+import { Effect, Layer, Scope, ServiceMap } from "effect"
+import { Session } from "."
+import { MessageV2 } from "./message-v2"
+import { SessionID } from "./schema"
+import { SessionStatus } from "./status"
+
+export namespace SessionRunState {
+  export interface Interface {
+    readonly assertNotBusy: (sessionID: SessionID) => Effect.Effect<void>
+    readonly cancel: (sessionID: SessionID) => Effect.Effect<void>
+    readonly ensureRunning: (
+      sessionID: SessionID,
+      onInterrupt: Effect.Effect<MessageV2.WithParts>,
+      work: Effect.Effect<MessageV2.WithParts>,
+    ) => Effect.Effect<MessageV2.WithParts>
+    readonly startShell: (
+      sessionID: SessionID,
+      onInterrupt: Effect.Effect<MessageV2.WithParts>,
+      work: Effect.Effect<MessageV2.WithParts>,
+    ) => Effect.Effect<MessageV2.WithParts>
+  }
+
+  export class Service extends ServiceMap.Service<Service, Interface>()("@opencode/SessionRunState") {}
+
+  export const layer = Layer.effect(
+    Service,
+    Effect.gen(function* () {
+      const status = yield* SessionStatus.Service
+
+      const state = yield* InstanceState.make(
+        Effect.fn("SessionRunState.state")(function* () {
+          const scope = yield* Scope.Scope
+          const runners = new Map<SessionID, Runner<MessageV2.WithParts>>()
+          yield* Effect.addFinalizer(
+            Effect.fnUntraced(function* () {
+              yield* Effect.forEach(runners.values(), (runner) => runner.cancel, {
+                concurrency: "unbounded",
+                discard: true,
+              })
+              runners.clear()
+            }),
+          )
+          return { runners, scope }
+        }),
+      )
+
+      const runner = Effect.fn("SessionRunState.runner")(function* (
+        sessionID: SessionID,
+        onInterrupt: Effect.Effect<MessageV2.WithParts>,
+      ) {
+        const data = yield* InstanceState.get(state)
+        const existing = data.runners.get(sessionID)
+        if (existing) return existing
+        const next = Runner.make<MessageV2.WithParts>(data.scope, {
+          onIdle: Effect.gen(function* () {
+            data.runners.delete(sessionID)
+            yield* status.set(sessionID, { type: "idle" })
+          }),
+          onBusy: status.set(sessionID, { type: "busy" }),
+          onInterrupt,
+          busy: () => {
+            throw new Session.BusyError(sessionID)
+          },
+        })
+        data.runners.set(sessionID, next)
+        return next
+      })
+
+      const assertNotBusy = Effect.fn("SessionRunState.assertNotBusy")(function* (sessionID: SessionID) {
+        const data = yield* InstanceState.get(state)
+        const existing = data.runners.get(sessionID)
+        if (existing?.busy) throw new Session.BusyError(sessionID)
+      })
+
+      const cancel = Effect.fn("SessionRunState.cancel")(function* (sessionID: SessionID) {
+        const data = yield* InstanceState.get(state)
+        const existing = data.runners.get(sessionID)
+        if (!existing || !existing.busy) {
+          yield* status.set(sessionID, { type: "idle" })
+          return
+        }
+        yield* existing.cancel
+      })
+
+      const ensureRunning = Effect.fn("SessionRunState.ensureRunning")(function* (
+        sessionID: SessionID,
+        onInterrupt: Effect.Effect<MessageV2.WithParts>,
+        work: Effect.Effect<MessageV2.WithParts>,
+      ) {
+        return yield* (yield* runner(sessionID, onInterrupt)).ensureRunning(work)
+      })
+
+      const startShell = Effect.fn("SessionRunState.startShell")(function* (
+        sessionID: SessionID,
+        onInterrupt: Effect.Effect<MessageV2.WithParts>,
+        work: Effect.Effect<MessageV2.WithParts>,
+      ) {
+        return yield* (yield* runner(sessionID, onInterrupt)).startShell(work)
+      })
+
+      return Service.of({ assertNotBusy, cancel, ensureRunning, startShell })
+    }),
+  )
+
+  export const defaultLayer = layer.pipe(Layer.provide(SessionStatus.defaultLayer))
+  const { runPromise } = makeRuntime(Service, defaultLayer)
+
+  export async function assertNotBusy(sessionID: SessionID) {
+    return runPromise((svc) => svc.assertNotBusy(sessionID))
+  }
+}

packages/opencode/src/session/status.ts

@@ -85,7 +85,7 @@ export namespace SessionStatus {
     }),
   )
 
-  const defaultLayer = layer.pipe(Layer.provide(Bus.layer))
+  export const defaultLayer = layer.pipe(Layer.provide(Bus.layer))
   const { runPromise } = makeRuntime(Service, defaultLayer)
 
   export async function get(sessionID: SessionID) {

packages/opencode/src/session/todo.ts

@@ -85,10 +85,6 @@ export namespace Todo {
   export const defaultLayer = layer.pipe(Layer.provide(Bus.layer))
   const { runPromise } = makeRuntime(Service, defaultLayer)
 
-  export async function update(input: { sessionID: SessionID; todos: Info[] }) {
-    return runPromise((svc) => svc.update(input))
-  }
-
   export async function get(sessionID: SessionID) {
     return runPromise((svc) => svc.get(sessionID))
   }

packages/opencode/src/shell/shell.ts

@@ -51,13 +51,13 @@ export namespace Shell {
       if (shell.startsWith("/") && name(shell) === "bash") return gitbash() || shell
       return shell
     }
-    return Bun.which(shell) || shell
+    return which(shell) || shell
   }
 
   function pick() {
-    const pwsh = Bun.which("pwsh")
+    const pwsh = which("pwsh.exe")
     if (pwsh) return pwsh
-    const powershell = Bun.which("powershell")
+    const powershell = which("powershell.exe")
     if (powershell) return powershell
   }
 

packages/opencode/src/storage/json-migration.ts

@@ -1,5 +1,5 @@
-import { Database } from "bun:sqlite"
-import { drizzle } from "drizzle-orm/bun-sqlite"
+import type { SQLiteBunDatabase } from "drizzle-orm/bun-sqlite"
+import type { NodeSQLiteDatabase } from "drizzle-orm/node-sqlite"
 import { Global } from "../global"
 import { Log } from "../util/log"
 import { ProjectTable } from "../project/project.sql"
@@ -23,7 +23,7 @@ export namespace JsonMigration {
     progress?: (event: Progress) => void
   }
 
-  export async function run(sqlite: Database, options?: Options) {
+  export async function run(db: SQLiteBunDatabase<any, any> | NodeSQLiteDatabase<any, any>, options?: Options) {
     const storageDir = path.join(Global.Path.data, "storage")
 
     if (!existsSync(storageDir)) {
@@ -43,13 +43,13 @@ export namespace JsonMigration {
     log.info("starting json to sqlite migration", { storageDir })
     const start = performance.now()
 
-    const db = drizzle({ client: sqlite })
+    // const db = drizzle({ client: sqlite })
 
     // Optimize SQLite for bulk inserts
-    sqlite.exec("PRAGMA journal_mode = WAL")
-    sqlite.exec("PRAGMA synchronous = OFF")
-    sqlite.exec("PRAGMA cache_size = 10000")
-    sqlite.exec("PRAGMA temp_store = MEMORY")
+    db.run("PRAGMA journal_mode = WAL")
+    db.run("PRAGMA synchronous = OFF")
+    db.run("PRAGMA cache_size = 10000")
+    db.run("PRAGMA temp_store = MEMORY")
     const stats = {
       projects: 0,
       sessions: 0,
@@ -146,7 +146,7 @@ export namespace JsonMigration {
 
     progress?.({ current, total, label: "starting" })
 
-    sqlite.exec("BEGIN TRANSACTION")
+    db.run("BEGIN TRANSACTION")
 
     // Migrate projects first (no FK deps)
     // Derive all IDs from file paths, not JSON content
@@ -400,7 +400,7 @@ export namespace JsonMigration {
       log.warn("skipped orphaned session shares", { count: orphans.shares })
     }
 
-    sqlite.exec("COMMIT")
+    db.run("COMMIT")
 
     log.info("json migration complete", {
       projects: stats.projects,

packages/opencode/src/tool/read.ts

@@ -67,9 +67,7 @@ export const ReadTool = Tool.defineEffect(
           if (item.type === "directory") return item.name + "/"
           if (item.type !== "symlink") return item.name
 
-          const target = yield* fs
-            .stat(path.join(filepath, item.name))
-            .pipe(Effect.catch(() => Effect.succeed(undefined)))
+          const target = yield* fs.stat(path.join(filepath, item.name)).pipe(Effect.catch(() => Effect.void))
           if (target?.type === "Directory") return item.name + "/"
           return item.name
         }),

packages/opencode/src/tool/registry.ts

@@ -42,20 +42,25 @@ import { Agent } from "../agent/agent"
 export namespace ToolRegistry {
   const log = Log.create({ service: "tool.registry" })
 
+  type TaskDef = Tool.InferDef<typeof TaskTool>
+  type ReadDef = Tool.InferDef<typeof ReadTool>
+
   type State = {
     custom: Tool.Def[]
     builtin: Tool.Def[]
+    task: TaskDef
+    read: ReadDef
   }
 
   export interface Interface {
     readonly ids: () => Effect.Effect<string[]>
     readonly all: () => Effect.Effect<Tool.Def[]>
+    readonly named: () => Effect.Effect<{ task: TaskDef; read: ReadDef }>
     readonly tools: (model: {
       providerID: ProviderID
       modelID: ModelID
       agent: Agent.Info
     }) => Effect.Effect<Tool.Def[]>
-    readonly fromID: (id: string) => Effect.Effect<Tool.Def>
   }
 
   export class Service extends ServiceMap.Service<Service, Interface>()("@opencode/ToolRegistry") {}
@@ -67,6 +72,7 @@ export namespace ToolRegistry {
     | Plugin.Service
     | Question.Service
     | Todo.Service
+    | Agent.Service
     | LSP.Service
     | FileTime.Service
     | Instruction.Service
@@ -77,8 +83,10 @@ export namespace ToolRegistry {
       const config = yield* Config.Service
       const plugin = yield* Plugin.Service
 
-      const build = <T extends Tool.Info>(tool: T | Effect.Effect<T, never, any>) =>
-        Effect.isEffect(tool) ? tool.pipe(Effect.flatMap(Tool.init)) : Tool.init(tool)
+      const task = yield* TaskTool
+      const read = yield* ReadTool
+      const question = yield* QuestionTool
+      const todo = yield* TodoWriteTool
 
       const state = yield* InstanceState.make<State>(
         Effect.fn("ToolRegistry.state")(function* (ctx) {
@@ -90,11 +98,11 @@ export namespace ToolRegistry {
               parameters: z.object(def.args),
               description: def.description,
               execute: async (args, toolCtx) => {
-                const pluginCtx = {
+                const pluginCtx: PluginToolContext = {
                   ...toolCtx,
                   directory: ctx.directory,
                   worktree: ctx.worktree,
-                } as unknown as PluginToolContext
+                }
                 const result = await def.execute(args as any, pluginCtx)
                 const out = await Truncate.output(result, {}, await Agent.get(toolCtx.agent))
                 return {
@@ -132,34 +140,52 @@ export namespace ToolRegistry {
           }
 
           const cfg = yield* config.get()
-          const question =
+          const questionEnabled =
             ["app", "cli", "desktop"].includes(Flag.OPENCODE_CLIENT) || Flag.OPENCODE_ENABLE_QUESTION_TOOL
 
+          const tool = yield* Effect.all({
+            invalid: Tool.init(InvalidTool),
+            bash: Tool.init(BashTool),
+            read: Tool.init(read),
+            glob: Tool.init(GlobTool),
+            grep: Tool.init(GrepTool),
+            edit: Tool.init(EditTool),
+            write: Tool.init(WriteTool),
+            task: Tool.init(task),
+            fetch: Tool.init(WebFetchTool),
+            todo: Tool.init(todo),
+            search: Tool.init(WebSearchTool),
+            code: Tool.init(CodeSearchTool),
+            skill: Tool.init(SkillTool),
+            patch: Tool.init(ApplyPatchTool),
+            question: Tool.init(question),
+            lsp: Tool.init(LspTool),
+            plan: Tool.init(PlanExitTool),
+          })
+
           return {
             custom,
-            builtin: yield* Effect.forEach(
-              [
-                InvalidTool,
-                BashTool,
-                ReadTool,
-                GlobTool,
-                GrepTool,
-                EditTool,
-                WriteTool,
-                TaskTool,
-                WebFetchTool,
-                TodoWriteTool,
-                WebSearchTool,
-                CodeSearchTool,
-                SkillTool,
-                ApplyPatchTool,
-                ...(question ? [QuestionTool] : []),
-                ...(Flag.OPENCODE_EXPERIMENTAL_LSP_TOOL ? [LspTool] : []),
-                ...(Flag.OPENCODE_EXPERIMENTAL_PLAN_MODE && Flag.OPENCODE_CLIENT === "cli" ? [PlanExitTool] : []),
-              ],
-              build,
-              { concurrency: "unbounded" },
-            ),
+            builtin: [
+              tool.invalid,
+              ...(questionEnabled ? [tool.question] : []),
+              tool.bash,
+              tool.read,
+              tool.glob,
+              tool.grep,
+              tool.edit,
+              tool.write,
+              tool.task,
+              tool.fetch,
+              tool.todo,
+              tool.search,
+              tool.code,
+              tool.skill,
+              tool.patch,
+              ...(Flag.OPENCODE_EXPERIMENTAL_LSP_TOOL ? [tool.lsp] : []),
+              ...(Flag.OPENCODE_EXPERIMENTAL_PLAN_MODE && Flag.OPENCODE_CLIENT === "cli" ? [tool.plan] : []),
+            ],
+            task: tool.task,
+            read: tool.read,
           }
         }),
       )
@@ -169,13 +195,6 @@ export namespace ToolRegistry {
         return [...s.builtin, ...s.custom] as Tool.Def[]
       })
 
-      const fromID: Interface["fromID"] = Effect.fn("ToolRegistry.fromID")(function* (id: string) {
-        const tools = yield* all()
-        const match = tools.find((tool) => tool.id === id)
-        if (!match) return yield* Effect.die(`Tool not found: ${id}`)
-        return match
-      })
-
       const ids: Interface["ids"] = Effect.fn("ToolRegistry.ids")(function* () {
         return (yield* all()).map((tool) => tool.id)
       })
@@ -208,7 +227,6 @@ export namespace ToolRegistry {
               id: tool.id,
               description: [
                 output.description,
-                // TODO: remove this hack
                 tool.id === TaskTool.id ? yield* TaskDescription(input.agent) : undefined,
                 tool.id === SkillTool.id ? yield* SkillDescription(input.agent) : undefined,
               ]
@@ -223,7 +241,12 @@ export namespace ToolRegistry {
         )
       })
 
-      return Service.of({ ids, tools, all, fromID })
+      const named: Interface["named"] = Effect.fn("ToolRegistry.named")(function* () {
+        const s = yield* InstanceState.get(state)
+        return { task: s.task, read: s.read }
+      })
+
+      return Service.of({ ids, all, named, tools })
     }),
   )
 
@@ -234,6 +257,7 @@ export namespace ToolRegistry {
         Layer.provide(Plugin.defaultLayer),
         Layer.provide(Question.defaultLayer),
         Layer.provide(Todo.defaultLayer),
+        Layer.provide(Agent.defaultLayer),
         Layer.provide(LSP.defaultLayer),
         Layer.provide(FileTime.defaultLayer),
         Layer.provide(Instruction.defaultLayer),

packages/opencode/src/tool/task.ts

@@ -6,96 +6,102 @@ import { SessionID, MessageID } from "../session/schema"
 import { MessageV2 } from "../session/message-v2"
 import { Agent } from "../agent/agent"
 import { SessionPrompt } from "../session/prompt"
-import { iife } from "@/util/iife"
-import { defer } from "@/util/defer"
 import { Config } from "../config/config"
 import { Permission } from "@/permission"
 import { Effect } from "effect"
+import { Log } from "@/util/log"
 
-export const TaskTool = Tool.define("task", async () => {
-  const agents = await Agent.list().then((x) => x.filter((a) => a.mode !== "primary"))
-  const list = agents.toSorted((a, b) => a.name.localeCompare(b.name))
-  const agentList = list
-    .map((a) => `- ${a.name}: ${a.description ?? "This subagent should only be called manually by the user."}`)
-    .join("\n")
-  const description = [`Available agent types and the tools they have access to:`, agentList].join("\n")
+const id = "task"
 
-  return {
-    description,
-    parameters: z.object({
-      description: z.string().describe("A short (3-5 words) description of the task"),
-      prompt: z.string().describe("The task for the agent to perform"),
-      subagent_type: z.string().describe("The type of specialized agent to use for this task"),
-      task_id: z
-        .string()
-        .describe(
-          "This should only be set if you mean to resume a previous task (you can pass a prior task_id and the task will continue the same subagent session as before instead of creating a fresh one)",
-        )
-        .optional(),
-      command: z.string().describe("The command that triggered this task").optional(),
-    }),
-    async execute(params, ctx) {
-      const config = await Config.get()
+const parameters = z.object({
+  description: z.string().describe("A short (3-5 words) description of the task"),
+  prompt: z.string().describe("The task for the agent to perform"),
+  subagent_type: z.string().describe("The type of specialized agent to use for this task"),
+  task_id: z
+    .string()
+    .describe(
+      "This should only be set if you mean to resume a previous task (you can pass a prior task_id and the task will continue the same subagent session as before instead of creating a fresh one)",
+    )
+    .optional(),
+  command: z.string().describe("The command that triggered this task").optional(),
+})
+
+export const TaskTool = Tool.defineEffect(
+  id,
+  Effect.gen(function* () {
+    const agent = yield* Agent.Service
+    const config = yield* Config.Service
+
+    const run = Effect.fn("TaskTool.execute")(function* (params: z.infer<typeof parameters>, ctx: Tool.Context) {
+      const cfg = yield* config.get()
 
-      // Skip permission check when user explicitly invoked via @ or command subtask
       if (!ctx.extra?.bypassAgentCheck) {
-        await ctx.ask({
-          permission: "task",
-          patterns: [params.subagent_type],
-          always: ["*"],
-          metadata: {
-            description: params.description,
-            subagent_type: params.subagent_type,
-          },
-        })
+        yield* Effect.promise(() =>
+          ctx.ask({
+            permission: id,
+            patterns: [params.subagent_type],
+            always: ["*"],
+            metadata: {
+              description: params.description,
+              subagent_type: params.subagent_type,
+            },
+          }),
+        )
       }
 
-      const agent = await Agent.get(params.subagent_type)
-      if (!agent) throw new Error(`Unknown agent type: ${params.subagent_type} is not a valid agent type`)
+      const next = yield* agent.get(params.subagent_type)
+      if (!next) {
+        return yield* Effect.fail(new Error(`Unknown agent type: ${params.subagent_type} is not a valid agent type`))
+      }
 
-      const hasTaskPermission = agent.permission.some((rule) => rule.permission === "task")
-      const hasTodoWritePermission = agent.permission.some((rule) => rule.permission === "todowrite")
+      const canTask = next.permission.some((rule) => rule.permission === id)
+      const canTodo = next.permission.some((rule) => rule.permission === "todowrite")
 
-      const session = await iife(async () => {
-        if (params.task_id) {
-          const found = await Session.get(SessionID.make(params.task_id)).catch(() => {})
-          if (found) return found
-        }
+      const taskID = params.task_id
+      const session = taskID
+        ? yield* Effect.promise(() => {
+            const id = SessionID.make(taskID)
+            return Session.get(id).catch(() => undefined)
+          })
+        : undefined
+      const nextSession =
+        session ??
+        (yield* Effect.promise(() =>
+          Session.create({
+            parentID: ctx.sessionID,
+            title: params.description + ` (@${next.name} subagent)`,
+            permission: [
+              ...(canTodo
+                ? []
+                : [
+                    {
+                      permission: "todowrite" as const,
+                      pattern: "*" as const,
+                      action: "deny" as const,
+                    },
+                  ]),
+              ...(canTask
+                ? []
+                : [
+                    {
+                      permission: id,
+                      pattern: "*" as const,
+                      action: "deny" as const,
+                    },
+                  ]),
+              ...(cfg.experimental?.primary_tools?.map((item) => ({
+                pattern: "*",
+                action: "allow" as const,
+                permission: item,
+              })) ?? []),
+            ],
+          }),
+        ))
 
-        return await Session.create({
-          parentID: ctx.sessionID,
-          title: params.description + ` (@${agent.name} subagent)`,
-          permission: [
-            ...(hasTodoWritePermission
-              ? []
-              : [
-                  {
-                    permission: "todowrite" as const,
-                    pattern: "*" as const,
-                    action: "deny" as const,
-                  },
-                ]),
-            ...(hasTaskPermission
-              ? []
-              : [
-                  {
-                    permission: "task" as const,
-                    pattern: "*" as const,
-                    action: "deny" as const,
-                  },
-                ]),
-            ...(config.experimental?.primary_tools?.map((t) => ({
-              pattern: "*",
-              action: "allow" as const,
-              permission: t,
-            })) ?? []),
-          ],
-        })
-      })
-      const msg = await MessageV2.get({ sessionID: ctx.sessionID, messageID: ctx.messageID })
-      if (msg.info.role !== "assistant") throw new Error("Not an assistant message")
+      const msg = yield* Effect.sync(() => MessageV2.get({ sessionID: ctx.sessionID, messageID: ctx.messageID }))
+      if (msg.info.role !== "assistant") return yield* Effect.fail(new Error("Not an assistant message"))
 
-      const model = agent.model ?? {
+      const model = next.model ?? {
         modelID: msg.info.modelID,
         providerID: msg.info.providerID,
       }
@@ -103,7 +109,7 @@ export const TaskTool = Tool.define("task", async () => {
       ctx.metadata({
         title: params.description,
         metadata: {
-          sessionId: session.id,
+          sessionId: nextSession.id,
           model,
         },
       })
@@ -111,59 +117,77 @@ export const TaskTool = Tool.define("task", async () => {
       const messageID = MessageID.ascending()
 
       function cancel() {
-        SessionPrompt.cancel(session.id)
+        SessionPrompt.cancel(nextSession.id)
       }
-      ctx.abort.addEventListener("abort", cancel)
-      using _ = defer(() => ctx.abort.removeEventListener("abort", cancel))
-      const promptParts = await SessionPrompt.resolvePromptParts(params.prompt)
 
-      const result = await SessionPrompt.prompt({
-        messageID,
-        sessionID: session.id,
-        model: {
-          modelID: model.modelID,
-          providerID: model.providerID,
-        },
-        agent: agent.name,
-        tools: {
-          ...(hasTodoWritePermission ? {} : { todowrite: false }),
-          ...(hasTaskPermission ? {} : { task: false }),
-          ...Object.fromEntries((config.experimental?.primary_tools ?? []).map((t) => [t, false])),
-        },
-        parts: promptParts,
-      })
+      return yield* Effect.acquireUseRelease(
+        Effect.sync(() => {
+          ctx.abort.addEventListener("abort", cancel)
+        }),
+        () =>
+          Effect.gen(function* () {
+            const parts = yield* Effect.promise(() => SessionPrompt.resolvePromptParts(params.prompt))
+            const result = yield* Effect.promise(() =>
+              SessionPrompt.prompt({
+                messageID,
+                sessionID: nextSession.id,
+                model: {
+                  modelID: model.modelID,
+                  providerID: model.providerID,
+                },
+                agent: next.name,
+                tools: {
+                  ...(canTodo ? {} : { todowrite: false }),
+                  ...(canTask ? {} : { task: false }),
+                  ...Object.fromEntries((cfg.experimental?.primary_tools ?? []).map((item) => [item, false])),
+                },
+                parts,
+              }),
+            )
 
-      const text = result.parts.findLast((x) => x.type === "text")?.text ?? ""
+            return {
+              title: params.description,
+              metadata: {
+                sessionId: nextSession.id,
+                model,
+              },
+              output: [
+                `task_id: ${nextSession.id} (for resuming to continue this task if needed)`,
+                "",
+                "<task_result>",
+                result.parts.findLast((item) => item.type === "text")?.text ?? "",
+                "</task_result>",
+              ].join("\n"),
+            }
+          }),
+        () =>
+          Effect.sync(() => {
+            ctx.abort.removeEventListener("abort", cancel)
+          }),
+      )
+    })
 
-      const output = [
-        `task_id: ${session.id} (for resuming to continue this task if needed)`,
-        "",
-        "<task_result>",
-        text,
-        "</task_result>",
-      ].join("\n")
-
-      return {
-        title: params.description,
-        metadata: {
-          sessionId: session.id,
-          model,
-        },
-        output,
-      }
-    },
-  }
-})
+    return {
+      description: DESCRIPTION,
+      parameters,
+      async execute(params: z.infer<typeof parameters>, ctx) {
+        return Effect.runPromise(run(params, ctx))
+      },
+    }
+  }),
+)
 
 export const TaskDescription: Tool.DynamicDescription = (agent) =>
   Effect.gen(function* () {
-    const agents = yield* Effect.promise(() => Agent.list().then((x) => x.filter((a) => a.mode !== "primary")))
-    const accessibleAgents = agents.filter(
-      (a) => Permission.evaluate("task", a.name, agent.permission).action !== "deny",
+    const items = yield* Effect.promise(() =>
+      Agent.list().then((items) => items.filter((item) => item.mode !== "primary")),
     )
-    const list = accessibleAgents.toSorted((a, b) => a.name.localeCompare(b.name))
+    const filtered = items.filter((item) => Permission.evaluate(id, item.name, agent.permission).action !== "deny")
+    const list = filtered.toSorted((a, b) => a.name.localeCompare(b.name))
     const description = list
-      .map((a) => `- ${a.name}: ${a.description ?? "This subagent should only be called manually by the user."}`)
+      .map(
+        (item) => `- ${item.name}: ${item.description ?? "This subagent should only be called manually by the user."}`,
+      )
       .join("\n")
-    return [`Available agent types and the tools they have access to:`, description].join("\n")
+    return ["Available agent types and the tools they have access to:", description].join("\n")
   })

packages/opencode/src/tool/tool.ts

@@ -60,6 +60,13 @@ export namespace Tool {
   export type InferMetadata<T> =
     T extends Info<any, infer M> ? M : T extends Effect.Effect<Info<any, infer M>, any, any> ? M : never
 
+  export type InferDef<T> =
+    T extends Info<infer P, infer M>
+      ? Def<P, M>
+      : T extends Effect.Effect<Info<infer P, infer M>, any, any>
+        ? Def<P, M>
+        : never
+
   function wrap<Parameters extends z.ZodType, Result extends Metadata>(
     id: string,
     init: (() => Promise<DefWithoutID<Parameters, Result>>) | DefWithoutID<Parameters, Result>,
@@ -98,24 +105,27 @@ export namespace Tool {
     }
   }
 
-  export function define<Parameters extends z.ZodType, Result extends Metadata>(
-    id: string,
+  export function define<Parameters extends z.ZodType, Result extends Metadata, ID extends string = string>(
+    id: ID,
     init: (() => Promise<DefWithoutID<Parameters, Result>>) | DefWithoutID<Parameters, Result>,
-  ): Info<Parameters, Result> {
+  ): Info<Parameters, Result> & { id: ID } {
     return {
       id,
       init: wrap(id, init),
     }
   }
 
-  export function defineEffect<Parameters extends z.ZodType, Result extends Metadata, R>(
-    id: string,
+  export function defineEffect<Parameters extends z.ZodType, Result extends Metadata, R, ID extends string = string>(
+    id: ID,
     init: Effect.Effect<(() => Promise<DefWithoutID<Parameters, Result>>) | DefWithoutID<Parameters, Result>, never, R>,
-  ): Effect.Effect<Info<Parameters, Result>, never, R> {
-    return Effect.map(init, (next) => ({ id, init: wrap(id, next) }))
+  ): Effect.Effect<Info<Parameters, Result>, never, R> & { id: ID } {
+    return Object.assign(
+      Effect.map(init, (next) => ({ id, init: wrap(id, next) })),
+      { id },
+    )
   }
 
-  export function init(info: Info): Effect.Effect<Def, never, any> {
+  export function init<P extends z.ZodType, M extends Metadata>(info: Info<P, M>): Effect.Effect<Def<P, M>> {
     return Effect.gen(function* () {
       const init = yield* Effect.promise(() => info.init())
       return {

packages/opencode/test/effect/runner.test.ts

@@ -250,7 +250,7 @@ describe("Runner", () => {
     Effect.gen(function* () {
       const s = yield* Scope.Scope
       const runner = Runner.make<string>(s)
-      const result = yield* runner.startShell((_signal) => Effect.succeed("shell-done"))
+      const result = yield* runner.startShell(Effect.succeed("shell-done"))
       expect(result).toBe("shell-done")
       expect(runner.busy).toBe(false)
     }),
@@ -264,7 +264,7 @@ describe("Runner", () => {
       const fiber = yield* runner.ensureRunning(Effect.never.pipe(Effect.as("x"))).pipe(Effect.forkChild)
       yield* Effect.sleep("10 millis")
 
-      const exit = yield* runner.startShell((_s) => Effect.succeed("nope")).pipe(Effect.exit)
+      const exit = yield* runner.startShell(Effect.succeed("nope")).pipe(Effect.exit)
       expect(Exit.isFailure(exit)).toBe(true)
 
       yield* runner.cancel
@@ -279,12 +279,10 @@ describe("Runner", () => {
       const runner = Runner.make<string>(s)
       const gate = yield* Deferred.make<void>()
 
-      const sh = yield* runner
-        .startShell((_signal) => Deferred.await(gate).pipe(Effect.as("first")))
-        .pipe(Effect.forkChild)
+      const sh = yield* runner.startShell(Deferred.await(gate).pipe(Effect.as("first"))).pipe(Effect.forkChild)
       yield* Effect.sleep("10 millis")
 
-      const exit = yield* runner.startShell((_s) => Effect.succeed("second")).pipe(Effect.exit)
+      const exit = yield* runner.startShell(Effect.succeed("second")).pipe(Effect.exit)
       expect(Exit.isFailure(exit)).toBe(true)
 
       yield* Deferred.succeed(gate, undefined)
@@ -302,37 +300,26 @@ describe("Runner", () => {
         },
       })
 
-      const sh = yield* runner
-        .startShell((signal) =>
-          Effect.promise(
-            () =>
-              new Promise<string>((resolve) => {
-                signal.addEventListener("abort", () => resolve("aborted"), { once: true })
-              }),
-          ),
-        )
-        .pipe(Effect.forkChild)
+      const sh = yield* runner.startShell(Effect.never.pipe(Effect.as("aborted"))).pipe(Effect.forkChild)
       yield* Effect.sleep("10 millis")
 
-      const exit = yield* runner.startShell((_s) => Effect.succeed("second")).pipe(Effect.exit)
+      const exit = yield* runner.startShell(Effect.succeed("second")).pipe(Effect.exit)
       expect(Exit.isFailure(exit)).toBe(true)
 
       yield* runner.cancel
       const done = yield* Fiber.await(sh)
-      expect(Exit.isSuccess(done)).toBe(true)
+      expect(Exit.isFailure(done)).toBe(true)
     }),
   )
 
   it.live(
-    "cancel interrupts shell that ignores abort signal",
+    "cancel interrupts shell",
     Effect.gen(function* () {
       const s = yield* Scope.Scope
       const runner = Runner.make<string>(s)
       const gate = yield* Deferred.make<void>()
 
-      const sh = yield* runner
-        .startShell((_signal) => Deferred.await(gate).pipe(Effect.as("ignored")))
-        .pipe(Effect.forkChild)
+      const sh = yield* runner.startShell(Deferred.await(gate).pipe(Effect.as("ignored"))).pipe(Effect.forkChild)
       yield* Effect.sleep("10 millis")
 
       const stop = yield* runner.cancel.pipe(Effect.forkChild)
@@ -356,9 +343,7 @@ describe("Runner", () => {
       const runner = Runner.make<string>(s)
       const gate = yield* Deferred.make<void>()
 
-      const sh = yield* runner
-        .startShell((_signal) => Deferred.await(gate).pipe(Effect.as("shell-result")))
-        .pipe(Effect.forkChild)
+      const sh = yield* runner.startShell(Deferred.await(gate).pipe(Effect.as("shell-result"))).pipe(Effect.forkChild)
       yield* Effect.sleep("10 millis")
       expect(runner.state._tag).toBe("Shell")
 
@@ -384,9 +369,7 @@ describe("Runner", () => {
       const calls = yield* Ref.make(0)
       const gate = yield* Deferred.make<void>()
 
-      const sh = yield* runner
-        .startShell((_signal) => Deferred.await(gate).pipe(Effect.as("shell")))
-        .pipe(Effect.forkChild)
+      const sh = yield* runner.startShell(Deferred.await(gate).pipe(Effect.as("shell"))).pipe(Effect.forkChild)
       yield* Effect.sleep("10 millis")
 
       const work = Effect.gen(function* () {
@@ -414,16 +397,7 @@ describe("Runner", () => {
       const runner = Runner.make<string>(s)
       const gate = yield* Deferred.make<void>()
 
-      const sh = yield* runner
-        .startShell((signal) =>
-          Effect.promise(
-            () =>
-              new Promise<string>((resolve) => {
-                signal.addEventListener("abort", () => resolve("aborted"), { once: true })
-              }),
-          ),
-        )
-        .pipe(Effect.forkChild)
+      const sh = yield* runner.startShell(Effect.never.pipe(Effect.as("aborted"))).pipe(Effect.forkChild)
       yield* Effect.sleep("10 millis")
 
       const run = yield* runner.ensureRunning(Effect.succeed("y")).pipe(Effect.forkChild)
@@ -478,7 +452,7 @@ describe("Runner", () => {
       const runner = Runner.make<string>(s, {
         onBusy: Ref.update(count, (n) => n + 1),
       })
-      yield* runner.startShell((_signal) => Effect.succeed("done"))
+      yield* runner.startShell(Effect.succeed("done"))
       expect(yield* Ref.get(count)).toBe(1)
     }),
   )
@@ -509,9 +483,7 @@ describe("Runner", () => {
       const runner = Runner.make<string>(s)
       const gate = yield* Deferred.make<void>()
 
-      const fiber = yield* runner
-        .startShell((_signal) => Deferred.await(gate).pipe(Effect.as("ok")))
-        .pipe(Effect.forkChild)
+      const fiber = yield* runner.startShell(Deferred.await(gate).pipe(Effect.as("ok"))).pipe(Effect.forkChild)
       yield* Effect.sleep("10 millis")
       expect(runner.busy).toBe(true)
 

packages/opencode/test/mcp/oauth-callback.test.ts

@@ -0,0 +1,34 @@
+import { test, expect, describe, afterEach } from "bun:test"
+import { McpOAuthCallback } from "../../src/mcp/oauth-callback"
+import { parseRedirectUri } from "../../src/mcp/oauth-provider"
+
+describe("parseRedirectUri", () => {
+  test("returns defaults when no URI provided", () => {
+    const result = parseRedirectUri()
+    expect(result.port).toBe(19876)
+    expect(result.path).toBe("/mcp/oauth/callback")
+  })
+
+  test("parses port and path from URI", () => {
+    const result = parseRedirectUri("http://127.0.0.1:8080/oauth/callback")
+    expect(result.port).toBe(8080)
+    expect(result.path).toBe("/oauth/callback")
+  })
+
+  test("returns defaults for invalid URI", () => {
+    const result = parseRedirectUri("not-a-valid-url")
+    expect(result.port).toBe(19876)
+    expect(result.path).toBe("/mcp/oauth/callback")
+  })
+})
+
+describe("McpOAuthCallback.ensureRunning", () => {
+  afterEach(async () => {
+    await McpOAuthCallback.stop()
+  })
+
+  test("starts server with custom redirectUri port and path", async () => {
+    await McpOAuthCallback.ensureRunning("http://127.0.0.1:18000/custom/callback")
+    expect(McpOAuthCallback.isRunning()).toBe(true)
+  })
+})

packages/opencode/test/provider/provider.test.ts

@@ -6,6 +6,7 @@ import { tmpdir } from "../fixture/fixture"
 import { Global } from "../../src/global"
 import { Instance } from "../../src/project/instance"
 import { Plugin } from "../../src/plugin/index"
+import { ModelsDev } from "../../src/provider/models"
 import { Provider } from "../../src/provider/provider"
 import { ProviderID, ModelID } from "../../src/provider/schema"
 import { Filesystem } from "../../src/util/filesystem"
@@ -1823,6 +1824,73 @@ test("custom model inherits api.url from models.dev provider", async () => {
   })
 })
 
+test("mode cost preserves over-200k pricing from base model", () => {
+  const provider = {
+    id: "openai",
+    name: "OpenAI",
+    env: [],
+    api: "https://api.openai.com/v1",
+    models: {
+      "gpt-5.4": {
+        id: "gpt-5.4",
+        name: "GPT-5.4",
+        family: "gpt",
+        release_date: "2026-03-05",
+        attachment: true,
+        reasoning: true,
+        temperature: false,
+        tool_call: true,
+        cost: {
+          input: 2.5,
+          output: 15,
+          cache_read: 0.25,
+          context_over_200k: {
+            input: 5,
+            output: 22.5,
+            cache_read: 0.5,
+          },
+        },
+        limit: {
+          context: 1_050_000,
+          input: 922_000,
+          output: 128_000,
+        },
+        experimental: {
+          modes: {
+            fast: {
+              cost: {
+                input: 5,
+                output: 30,
+                cache_read: 0.5,
+              },
+              provider: {
+                body: {
+                  service_tier: "priority",
+                },
+              },
+            },
+          },
+        },
+      },
+    },
+  } as ModelsDev.Provider
+
+  const model = Provider.fromModelsDevProvider(provider).models["gpt-5.4-fast"]
+  expect(model.cost.input).toEqual(5)
+  expect(model.cost.output).toEqual(30)
+  expect(model.cost.cache.read).toEqual(0.5)
+  expect(model.cost.cache.write).toEqual(0)
+  expect(model.options["serviceTier"]).toEqual("priority")
+  expect(model.cost.experimentalOver200K).toEqual({
+    input: 5,
+    output: 22.5,
+    cache: {
+      read: 0.5,
+      write: 0,
+    },
+  })
+})
+
 test("model variants are generated for reasoning models", async () => {
   await using tmp = await tmpdir({
     init: async (dir) => {

packages/opencode/test/server/project-init-git.test.ts

@@ -19,7 +19,7 @@ afterEach(async () => {
 describe("project.initGit endpoint", () => {
   test("initializes git and reloads immediately", async () => {
     await using tmp = await tmpdir()
-    const app = Server.Default()
+    const app = Server.Default().app
     const seen: { directory?: string; payload: { type: string } }[] = []
     const fn = (evt: { directory?: string; payload: { type: string } }) => {
       seen.push(evt)
@@ -76,7 +76,7 @@ describe("project.initGit endpoint", () => {
 
   test("does not reload when the project is already git", async () => {
     await using tmp = await tmpdir({ git: true })
-    const app = Server.Default()
+    const app = Server.Default().app
     const seen: { directory?: string; payload: { type: string } }[] = []
     const fn = (evt: { directory?: string; payload: { type: string } }) => {
       seen.push(evt)

packages/opencode/test/server/session-actions.test.ts

@@ -5,6 +5,7 @@ import { Session } from "../../src/session"
 import { ModelID, ProviderID } from "../../src/provider/schema"
 import { MessageID, PartID, type SessionID } from "../../src/session/schema"
 import { SessionPrompt } from "../../src/session/prompt"
+import { SessionRunState } from "../../src/session/run-state"
 import { Log } from "../../src/util/log"
 import { tmpdir } from "../fixture/fixture"
 
@@ -42,7 +43,7 @@ describe("session action routes", () => {
       fn: async () => {
         const session = await Session.create({})
         const cancel = spyOn(SessionPrompt, "cancel").mockResolvedValue()
-        const app = Server.Default()
+        const app = Server.Default().app
 
         const res = await app.request(`/session/${session.id}/abort`, {
           method: "POST",
@@ -64,9 +65,9 @@ describe("session action routes", () => {
       fn: async () => {
         const session = await Session.create({})
         const msg = await user(session.id, "hello")
-        const busy = spyOn(SessionPrompt, "assertNotBusy").mockRejectedValue(new Session.BusyError(session.id))
+        const busy = spyOn(SessionRunState, "assertNotBusy").mockRejectedValue(new Session.BusyError(session.id))
         const remove = spyOn(Session, "removeMessage").mockResolvedValue(msg.id)
-        const app = Server.Default()
+        const app = Server.Default().app
 
         const res = await app.request(`/session/${session.id}/message/${msg.id}`, {
           method: "DELETE",

packages/opencode/test/server/session-messages.test.ts

@@ -60,7 +60,7 @@ describe("session messages endpoint", () => {
         fn: async () => {
           const session = await Session.create({})
           const ids = await fill(session.id, 5)
-          const app = Server.Default()
+          const app = Server.Default().app
 
           const a = await app.request(`/session/${session.id}/message?limit=2`)
           expect(a.status).toBe(200)
@@ -89,7 +89,7 @@ describe("session messages endpoint", () => {
         fn: async () => {
           const session = await Session.create({})
           const ids = await fill(session.id, 3)
-          const app = Server.Default()
+          const app = Server.Default().app
 
           const res = await app.request(`/session/${session.id}/message`)
           expect(res.status).toBe(200)
@@ -109,7 +109,7 @@ describe("session messages endpoint", () => {
         directory: tmp.path,
         fn: async () => {
           const session = await Session.create({})
-          const app = Server.Default()
+          const app = Server.Default().app
 
           const bad = await app.request(`/session/${session.id}/message?limit=2&before=bad`)
           expect(bad.status).toBe(400)
@@ -131,7 +131,7 @@ describe("session messages endpoint", () => {
         fn: async () => {
           const session = await Session.create({})
           await fill(session.id, 520)
-          const app = Server.Default()
+          const app = Server.Default().app
 
           const res = await app.request(`/session/${session.id}/message?limit=510`)
           expect(res.status).toBe(200)

packages/opencode/test/server/session-select.test.ts

@@ -21,7 +21,7 @@ describe("tui.selectSession endpoint", () => {
         const session = await Session.create({})
 
         // #when
-        const app = Server.Default()
+        const app = Server.Default().app
         const response = await app.request("/tui/select-session", {
           method: "POST",
           headers: { "Content-Type": "application/json" },
@@ -47,7 +47,7 @@ describe("tui.selectSession endpoint", () => {
         const nonExistentSessionID = "ses_nonexistent123"
 
         // #when
-        const app = Server.Default()
+        const app = Server.Default().app
         const response = await app.request("/tui/select-session", {
           method: "POST",
           headers: { "Content-Type": "application/json" },
@@ -69,7 +69,7 @@ describe("tui.selectSession endpoint", () => {
         const invalidSessionID = "invalid_session_id"
 
         // #when
-        const app = Server.Default()
+        const app = Server.Default().app
         const response = await app.request("/tui/select-session", {
           method: "POST",
           headers: { "Content-Type": "application/json" },

packages/opencode/test/session/compaction.test.ts

@@ -139,18 +139,8 @@ function fake(
     get message() {
       return msg
     },
-    abort: Effect.fn("TestSessionProcessor.abort")(() => Effect.void),
-    partFromToolCall() {
-      return {
-        id: PartID.ascending(),
-        messageID: msg.id,
-        sessionID: msg.sessionID,
-        type: "tool",
-        callID: "fake",
-        tool: "fake",
-        state: { status: "pending", input: {}, raw: "" },
-      }
-    },
+    updateToolCall: Effect.fn("TestSessionProcessor.updateToolCall")(() => Effect.succeed(undefined)),
+    completeToolCall: Effect.fn("TestSessionProcessor.completeToolCall")(() => Effect.void),
     process: Effect.fn("TestSessionProcessor.process")(() => Effect.succeed(result)),
   } satisfies SessionProcessorModule.SessionProcessor.Handle
 }

packages/opencode/test/session/message-v2.test.ts

@@ -570,6 +570,81 @@ describe("session.message-v2.toModelMessage", () => {
     ])
   })
 
+  test("forwards partial bash output for aborted tool calls", async () => {
+    const userID = "m-user"
+    const assistantID = "m-assistant"
+    const output = [
+      "31403",
+      "12179",
+      "4575",
+      "",
+      "<bash_metadata>",
+      "User aborted the command",
+      "</bash_metadata>",
+    ].join("\n")
+
+    const input: MessageV2.WithParts[] = [
+      {
+        info: userInfo(userID),
+        parts: [
+          {
+            ...basePart(userID, "u1"),
+            type: "text",
+            text: "run tool",
+          },
+        ] as MessageV2.Part[],
+      },
+      {
+        info: assistantInfo(assistantID, userID),
+        parts: [
+          {
+            ...basePart(assistantID, "a1"),
+            type: "tool",
+            callID: "call-1",
+            tool: "bash",
+            state: {
+              status: "error",
+              input: { command: "for i in {1..20}; do print -- $RANDOM; sleep 1; done" },
+              error: "Tool execution aborted",
+              metadata: { interrupted: true, output },
+              time: { start: 0, end: 1 },
+            },
+          },
+        ] as MessageV2.Part[],
+      },
+    ]
+
+    expect(await MessageV2.toModelMessages(input, model)).toStrictEqual([
+      {
+        role: "user",
+        content: [{ type: "text", text: "run tool" }],
+      },
+      {
+        role: "assistant",
+        content: [
+          {
+            type: "tool-call",
+            toolCallId: "call-1",
+            toolName: "bash",
+            input: { command: "for i in {1..20}; do print -- $RANDOM; sleep 1; done" },
+            providerExecuted: undefined,
+          },
+        ],
+      },
+      {
+        role: "tool",
+        content: [
+          {
+            type: "tool-result",
+            toolCallId: "call-1",
+            toolName: "bash",
+            output: { type: "text", value: output },
+          },
+        ],
+      },
+    ])
+  })
+
   test("filters assistant messages with non-abort errors", async () => {
     const assistantID = "m-assistant"