feat(app): add about settings page

.changeset/attention-accent-color.md

@@ -0,0 +1,5 @@
+---
+"@opencode-ai/theme": patch
+---
+
+Use the unread accent color by default for question and permission status indicators, while preserving explicit theme overrides.

.changeset/calm-moves-cache.md

@@ -0,0 +1,5 @@
+---
+"@opencode-ai/core": patch
+---
+
+Preserve prompt cache prefixes when sessions move between locations with unchanged instructions.

.changeset/device-authorization-url.md

@@ -0,0 +1,5 @@
+---
+"@opencode-ai/core": patch
+---
+
+Fix OpenCode Console device authorization URLs when the server returns an origin-rooted verification path.

.changeset/git-ignore-check.md

@@ -0,0 +1,5 @@
+---
+"@opencode-ai/core": patch
+---
+
+Propagate fatal Git ignore-check errors during index refresh so best-effort snapshot capture returns unavailable instead of treating the check as having no matches.

.changeset/idempotent-prompt-reuse.md

@@ -0,0 +1,5 @@
+---
+"@opencode-ai/core": patch
+---
+
+Prompt and synthetic inbox ID reuse is now idempotent: reusing an ID within the same Session succeeds and returns the first admission, ignoring the retried payload, metadata, and delivery mode. Previously reuse with a differing payload failed with a conflict. Cross-Session and cross-type reuse still fail, and control items keep their operation-specific conflict behavior.

.changeset/mcp-word-case.md

@@ -0,0 +1,5 @@
+---
+"@opencode-ai/core": major
+---
+
+Treat MCP as a word in current Core namespace exports: rename `MCP` to `Mcp`, `MCPClient` to `McpClient`, `MCPStdio` to `McpStdio`, `MCPOAuth` to `McpOAuth`, `ConfigMCPPlugin` to `ConfigMcpPlugin`, and `MCPCodeModeExclusionPlugin` to `McpCodeModeExclusionPlugin`. Direct consumers must update their imports. Module paths, Schema contracts, runtime service keys, error tags, and behavior are unchanged.

.changeset/model-content-names.md

@@ -0,0 +1,5 @@
+---
+"@opencode-ai/core": patch
+---
+
+Rename the write, patch, and question tool formatting helpers from `toModelOutput` to `toModelContent` to match the result field they populate. Direct imports of these helpers must use the new name; generated content and declared machine output are unchanged.

.changeset/model-package-name.md

@@ -0,0 +1,5 @@
+---
+"@opencode-ai/core": minor
+---
+
+Rename ModelResolver.supported to ModelResolver.hasPackage. Consumers of the old export must update the name; the predicate remains Boolean(model.package), checking only whether a catalog model declares a provider package, not whether it can be loaded. Default-model selection behavior is unchanged.

.changeset/nested-instruction-reinjection.md

@@ -0,0 +1,5 @@
+---
+"@opencode-ai/core": patch
+---
+
+Nested AGENTS.md instructions are re-injected after compaction. Previously the in-memory dedup claim outlived the synthetic message that compaction dropped from model-visible history, so nested instructions were silently lost for the rest of the process lifetime. The claim now only guards in-flight loads; the synthetic message metadata in durable history is the sole lasting ledger, so any history truncation (compaction, revert) self-heals on the next read in that subtree.

.changeset/promise-plugin-adapter.md

@@ -0,0 +1,5 @@
+---
+"@opencode-ai/plugin": patch
+---
+
+Derive Promise plugin API request and response conversion from the canonical protocol schemas.

.changeset/quiet-forms-replace-questions.md

@@ -0,0 +1,8 @@
+---
+"@opencode-ai/core": minor
+"@opencode-ai/schema": minor
+"@opencode-ai/protocol": minor
+"@opencode-ai/client": minor
+---
+
+Remove the unused question request API and use session forms for question tool interactions.

.changeset/rename-undo.md

@@ -0,0 +1,5 @@
+---
+"@opencode-ai/core": patch
+---
+
+Include both paths of renamed files in new snapshot change lists so undo restores the original file instead of only deleting the renamed file.

.changeset/share-session-model-request.md

@@ -0,0 +1,5 @@
+---
+"@opencode-ai/core": patch
+---
+
+Apply shared Session model-request preparation to transient generation.

.changeset/shell-permission-scan.md

@@ -0,0 +1,9 @@
+---
+"@opencode-ai/core": minor
+"@opencode-ai/schema": minor
+"@opencode-ai/protocol": minor
+"@opencode-ai/client": minor
+---
+
+Add an opt-in portable shell permission scanner. Opaque commands use normal shell authorization without inferring
+external directories, while the default tree-sitter path remains unchanged.

.changeset/shell-scanner-compatibility.md

@@ -0,0 +1,10 @@
+---
+"@opencode-ai/core": patch
+---
+
+Make the experimental portable shell scanner authoritative, with no Tree-sitter
+fallback. Scan common Bash and PowerShell control flow, heredocs, functions,
+expressions, quoting, and substitutions natively. Preserve existing redirect and
+declaration permission matching, and make PowerShell saved approvals cover the
+original command spelling. Parser failures remain visible without changing the
+permission engine. The default Tree-sitter path is unchanged.

.changeset/skill-directory-ids.md

@@ -0,0 +1,5 @@
+---
+"@opencode-ai/core": patch
+---
+
+Use parent directory names for SKILL.md IDs so individually downloaded skills do not overwrite each other.

.changeset/stable-project-labels.md

@@ -0,0 +1,8 @@
+---
+"@opencode-ai/core": patch
+"@opencode-ai/app": patch
+---
+
+Keep project labels stable when opening multiple clones of the same repository, while still refreshing the canonical path when its directory is renamed or removed.
+
+Worktree setup scripts receive the selected source directory as `OPENCODE_WORKTREE_BASE` rather than another clone's shared project path.

.changeset/steer-resume-simplified.md

@@ -0,0 +1,5 @@
+---
+"@opencode-ai/core": patch
+---
+
+Simplify interrupt continuation: the steer-scoped resume decision now lives in SessionExecution as a post-cleanup inbox check, and the run coordinator drops its continuation state machine. Wakes arriving during cancellation cleanup now restart a normal full drain, and interrupting an idle session with continue now resumes pending steering input. Recovery-applied moves now end with the same full wake as inbox-admitted moves, retrying any stranded inbox work at the new location. Interrupting with continue now also resumes a next-in-line control item: between-turn manual compaction and moves run under any drain scope, while queued prompts remain parked.

.changeset/terminal-form-recovery.md

@@ -0,0 +1,6 @@
+---
+"@opencode-ai/client": patch
+"@opencode-ai/plugin": patch
+---
+
+Add form reply and cancellation operations that reconcile terminal forms in the local TUI projection.

.changeset/unify-request-envelope.md

@@ -0,0 +1,5 @@
+---
+"@opencode-ai/core": patch
+---
+
+Title generation and compaction summaries now build their model requests through the shared session request boundary, gaining unsupported-media filtering and image bounds while explicitly opting out of session context hooks: plugins that shape the agent conversation do not observe title or compaction requests. Title requests gain the fork-aware session prompt cache key, and compaction summaries in forked sessions reuse the fork root's prompt cache key instead of the fork's own.

.changeset/websocket-request-hooks.md

@@ -0,0 +1,6 @@
+---
+"@opencode-ai/plugin": patch
+"@opencode-ai/core": patch
+---
+
+Add transport-neutral Session model request hooks and provider-scoped hook registration so eligible OpenAI Responses requests can prefer WebSocket without bypassing HTTP-only middleware.

bunfig.toml

@@ -2,7 +2,7 @@
 exact = true
 # Only install newly resolved package versions published at least 3 days ago.
 minimumReleaseAge = 259200
-minimumReleaseAgeExcludes = ["@ai-sdk/amazon-bedrock", "@ai-sdk/anthropic", "@brendonovich/vite-plugin-opencode", "@opencode-ai/sdk", "@opencode-ai/pty", "@opencode-ai/pty-darwin-arm64", "@opencode-ai/pty-darwin-x64", "@opencode-ai/pty-linux-arm64-gnu", "@opencode-ai/pty-linux-arm64-musl", "@opencode-ai/pty-linux-x64-gnu", "@opencode-ai/pty-linux-x64-musl", "@opentui/core", "@opentui/core-darwin-arm64", "@opentui/core-darwin-x64", "@opentui/core-linux-arm64", "@opentui/core-linux-arm64-musl", "@opentui/core-linux-x64", "@opentui/core-linux-x64-musl", "@opentui/core-win32-arm64", "@opentui/core-win32-x64", "@opentui/keymap", "@opentui/solid", "opentui-spinner", "gitlab-ai-provider", "opencode-gitlab-auth", "@ff-labs/fff-node", "@ff-labs/fff-bun", "@ff-labs/fff-bin-darwin-arm64", "@ff-labs/fff-bin-darwin-x64", "@ff-labs/fff-bin-linux-arm64-gnu", "@ff-labs/fff-bin-linux-arm64-musl", "@ff-labs/fff-bin-linux-x64-gnu", "@ff-labs/fff-bin-linux-x64-musl", "@ff-labs/fff-bin-win32-arm64", "@ff-labs/fff-bin-win32-x64", "@pierre/diffs", "@pierre/theming", "app-builder-lib", "dmg-builder", "electron", "electron-builder", "electron-publish", "blume", "mermaid"]
+minimumReleaseAgeExcludes = ["@ai-sdk/amazon-bedrock", "@ai-sdk/anthropic", "@brendonovich/vite-plugin-opencode", "@opencode-ai/sdk", "@opencode-ai/pty", "@opencode-ai/pty-darwin-arm64", "@opencode-ai/pty-darwin-x64", "@opencode-ai/pty-linux-arm64-gnu", "@opencode-ai/pty-linux-arm64-musl", "@opencode-ai/pty-linux-x64-gnu", "@opencode-ai/pty-linux-x64-musl", "@opentui/core", "@opentui/core-darwin-arm64", "@opentui/core-darwin-x64", "@opentui/core-linux-arm64", "@opentui/core-linux-arm64-musl", "@opentui/core-linux-x64", "@opentui/core-linux-x64-musl", "@opentui/core-win32-arm64", "@opentui/core-win32-x64", "@opentui/keymap", "@opentui/solid", "opentui-spinner", "gitlab-ai-provider", "opencode-gitlab-auth", "@ff-labs/fff-node", "@ff-labs/fff-bun", "@ff-labs/fff-bin-darwin-arm64", "@ff-labs/fff-bin-darwin-x64", "@ff-labs/fff-bin-linux-arm64-gnu", "@ff-labs/fff-bin-linux-arm64-musl", "@ff-labs/fff-bin-linux-x64-gnu", "@ff-labs/fff-bin-linux-x64-musl", "@ff-labs/fff-bin-win32-arm64", "@ff-labs/fff-bin-win32-x64", "@pierre/diffs", "@pierre/theming", "app-builder-lib", "dmg-builder", "electron", "electron-builder", "electron-publish", "blume"]
 
 [test]
 root = "./do-not-run-tests-from-root"

infra/app.ts

@@ -63,8 +63,7 @@ new sst.cloudflare.StaticSite("WebApp", {
   domain: "app." + domain,
   path: "packages/app",
   build: {
-    // Preserve Sentry credentials and run source-map uploads on every deployment.
-    command: "bun run build",
+    command: "bun turbo build",
     output: "./dist",
   },
 })

nix/hashes.json

@@ -1,8 +1,8 @@
 {
   "nodeModules": {
-    "x86_64-linux": "sha256-EtUp4pHl9TyPtRrLGvk/X7kd2LuIxNxCpUwF5aLtzN4=",
-    "aarch64-linux": "sha256-m0j/pMZCguclR3/T9JmzCfi11YzmIvBFyR2bVhIO37Y=",
-    "aarch64-darwin": "sha256-nqefk68ZTUfNU15q1WkXaGsFzPNwOjCtMHpp6WrpNqM=",
-    "x86_64-darwin": "sha256-syD7hX62E4yCDV/wux1QKw4q/zZr24f99Y2mmzMJo6o="
+    "x86_64-linux": "sha256-agxF1Ab8P84tijHvw7jaG+9UZm/dJZhHw8CGNlQQqYc=",
+    "aarch64-linux": "sha256-Kg6CkhoEEsb+ZOGPN/rnNoirLdGSyQl6HU/Fy8t9Mqs=",
+    "aarch64-darwin": "sha256-SnxBpmcfPL2p3OYmSuG5Y/aFW8PeEOLhfQrxAs/53fs=",
+    "x86_64-darwin": "sha256-Dnxl1EcfiE7/rlHmPkko0BKc6hHVk6rQ/2h/PWuLfNo="
   }
 }

package.json

@@ -39,24 +39,24 @@
       "packages/stats/*"
     ],
     "catalog": {
-      "@effect/opentelemetry": "4.0.0-rc.112",
-      "@effect/platform-node": "4.0.0-rc.112",
-      "@effect/platform-node-shared": "4.0.0-rc.112",
-      "@effect/sql-sqlite-bun": "4.0.0-rc.112",
+      "@effect/opentelemetry": "4.0.0-rc.111",
+      "@effect/platform-node": "4.0.0-rc.111",
+      "@effect/platform-node-shared": "4.0.0-rc.111",
+      "@effect/sql-sqlite-bun": "4.0.0-rc.111",
       "@npmcli/arborist": "9.4.0",
       "@types/bun": "1.3.13",
       "@types/cross-spawn": "6.0.6",
       "@octokit/rest": "22.0.0",
       "@hono/standard-validator": "0.2.0",
       "@hono/zod-validator": "0.4.2",
-      "@opentui/core": "0.5.9",
-      "@opentui/keymap": "0.5.9",
-      "@opentui/solid": "0.5.9",
+      "@opentui/core": "0.5.8",
+      "@opentui/keymap": "0.5.8",
+      "@opentui/solid": "0.5.8",
       "@tanstack/solid-virtual": "3.13.37",
-      "@shikijs/stream": "4.4.3",
+      "@shikijs/stream": "4.2.0",
       "@standard-schema/spec": "1.1.0",
       "ulid": "3.0.1",
-      "@kobalte/core": "0.13.13",
+      "@kobalte/core": "0.13.11",
       "@corvu/drawer": "0.2.4",
       "@types/luxon": "3.7.1",
       "@types/node": "24.12.2",
@@ -67,16 +67,13 @@
       "@openauthjs/openauth": "0.0.0-20250322224806",
       "@pierre/diffs": "1.2.10",
       "opentui-spinner": "0.0.7",
-      "@solid-primitives/event-listener": "2.4.6",
-      "@solid-primitives/media": "2.3.6",
-      "@solid-primitives/resize-observer": "2.2.0",
-      "@solid-primitives/storage": "4.4.0",
+      "@solid-primitives/storage": "4.3.3",
       "@tailwindcss/vite": "4.1.11",
       "diff": "8.0.4",
-      "dompurify": "3.4.14",
+      "dompurify": "3.3.1",
       "drizzle-kit": "1.0.0-rc.5-ab785fc",
       "drizzle-orm": "1.0.0-rc.5-169397b",
-      "effect": "4.0.0-rc.112",
+      "effect": "4.0.0-rc.111",
       "ai": "6.0.168",
       "cross-spawn": "7.0.6",
       "hono": "4.10.7",
@@ -84,9 +81,9 @@
       "fuzzysort": "3.1.0",
       "get-east-asian-width": "1.6.0",
       "luxon": "3.6.1",
-      "marked": "18.0.11",
+      "marked": "18.0.7",
       "marked-shiki": "1.2.1",
-      "remend": "1.3.1",
+      "remend": "1.3.0",
       "@playwright/test": "1.59.1",
       "semver": "7.7.4",
       "typescript": "5.8.2",
@@ -95,17 +92,17 @@
       "remeda": "2.26.0",
       "resolve.exports": "2.0.3",
       "sst": "4.13.1",
-      "shiki": "4.4.3",
+      "shiki": "4.2.0",
       "solid-list": "0.3.0",
       "string-width": "7.2.0",
       "tailwindcss": "4.1.11",
-      "vite": "7.3.6",
+      "vite": "7.1.4",
       "@solidjs/meta": "0.29.4",
-      "@solidjs/router": "1.0.0",
+      "@solidjs/router": "0.15.4",
       "@solidjs/start": "https://pkg.pr.new/@solidjs/start@dfb2020",
-      "@sentry/solid": "10.71.0",
-      "@sentry/vite-plugin": "5.4.0",
-      "solid-js": "1.9.15",
+      "@sentry/solid": "10.36.0",
+      "@sentry/vite-plugin": "4.6.0",
+      "solid-js": "1.9.10",
       "solid-sonner": "0.3.1",
       "vite-plugin-solid": "2.11.10",
       "@lydell/node-pty": "1.2.0-beta.12"
@@ -161,8 +158,7 @@
     "@effect/platform-node-shared": "catalog:",
     "@types/bun": "catalog:",
     "@types/node": "catalog:",
-    "effect": "catalog:",
-    "solid-js": "catalog:"
+    "effect": "catalog:"
   },
   "patchedDependencies": {
     "@ai-sdk/openai-compatible@2.0.41": "patches/@ai-sdk%2Fopenai-compatible@2.0.41.patch",
@@ -170,7 +166,7 @@
     "@npmcli/agent@4.0.2": "patches/@npmcli%2Fagent@4.0.2.patch",
     "@silvia-odwyer/photon-node@0.3.4": "patches/@silvia-odwyer%2Fphoton-node@0.3.4.patch",
     "@standard-community/standard-openapi@0.2.9": "patches/@standard-community%2Fstandard-openapi@0.2.9.patch",
-    "solid-js@1.9.15": "patches/solid-js@1.9.15.patch",
+    "solid-js@1.9.10": "patches/solid-js@1.9.10.patch",
     "@ai-sdk/mistral@3.0.51": "patches/@ai-sdk%2Fmistral@3.0.51.patch",
     "gcp-metadata@8.1.2": "patches/gcp-metadata@8.1.2.patch",
     "pacote@21.5.0": "patches/pacote@21.5.0.patch",

packages/ai/README.md

@@ -214,40 +214,22 @@ the requests sent by code under test:
 import { Effect } from "effect"
 import { TestLLM } from "@opencode-ai/ai/testing"
 
+const testLLM = TestLLM.layer({
+  fallback: TestLLM.text("Hello from the test model", "text-1"),
+})
+
+// TestLLM.clientLayer provides LLMClient.Service and consumes TestLLM.Service.
 const programWithTestClient = Effect.gen(function* () {
-  const test = yield* TestLLM.Test
-  yield* test.push(TestLLM.text("Hello from the test model", "text-1"))
   const result = yield* program
-  console.log(yield* test.requests())
+  const test = yield* TestLLM.Service
+  console.log(test.requests)
   return result
-}).pipe(Effect.provide(TestLLM.testLayer()))
+}).pipe(Effect.provide(TestLLM.clientLayer), Effect.provide(testLLM))
 ```
 
-`testLayer()` provides the same object under `LLMClient.Service` and `TestLLM.Test`. Production consumes the
-normal client; tests use the additional controls. Each layer build has fresh state.
-
-- `test.push(...)` queues one-shot responses in execution order. Each argument is one response.
-- `test.always(response)` installs a repeatable fallback. The layer's `fallback` option sets its initial value.
-- `test.serve(request => response)` installs a request-dependent fallback. `always` and `serve` replace each
-  other without changing queued replies; queued replies take precedence.
-- `test.requests()` returns an array snapshot. `transformRequest` changes only the recorded observation;
-  `serve` receives the original canonical request.
-- `test.wait(count)` waits for request arrivals, not output or completion, and supports concurrent waiters.
-- `test.gate()` returns a scoped gate with countable `started` notifications and a `release` Effect. Release
-  unblocks all requests captured by that gate; closing its scope also releases it. Effect-aware test runners
-  already provide Scope.
-
-Constructing `stream()` or `generate()` does not record a request, invoke a responder, or consume a script.
-Each execution does. An exhausted queue without a fallback defects immediately rather than waiting for a
-future reply.
-
-Responses remain canonical event arrays or arbitrary `Stream<LLMEvent, AIError>` values. The client consumes
-supplied streams directly, preserving failure identity, finalizers, incomplete output, and post-finish tails;
-it does not repair or truncate them.
-
-The published legacy `Service`, `layer`, `clientLayer`, and module-level controls remain available as adapters
-over the same implementation, including the legacy live `requests` array. New tests should use `Test` and
-`testLayer`.
+`TestLLM.push(...)` scripts one-shot responses, `TestLLM.always(...)` changes the fallback, and
+`TestLLM.wait(...)` lets concurrent tests wait until a request has arrived. Every received canonical request is
+available on the yielded `TestLLM.Service`.
 
 ## Caching
 

packages/ai/src/protocols/bedrock-converse.ts

@@ -496,7 +496,6 @@ const mapUsage = (usage: BedrockUsageSchema | undefined, providerMetadataKey: st
 interface ParserState {
   readonly providerMetadataKey: string
   readonly tools: ToolStream.State<number>
-  readonly finishedTools: ReadonlySet<number>
   // Bedrock splits the finish into `messageStop` (carries `stopReason`) and
   // `metadata` (carries usage). Hold the terminal event in state so `onHalt`
   // can emit exactly one finish after both chunks have had a chance to arrive.
@@ -575,7 +574,6 @@ const step = (state: ParserState, event: BedrockEvent) =>
 
     if (event.contentBlockDelta?.delta?.toolUse) {
       const index = event.contentBlockDelta.contentBlockIndex
-      if (state.finishedTools.has(index)) return [state, []] as const
       const result = ToolStream.appendExisting(
         ADAPTER,
         state.tools,
@@ -614,7 +612,6 @@ const step = (state: ParserState, event: BedrockEvent) =>
             state.hasToolCalls,
           lifecycle,
           tools: result.tools,
-          finishedTools: resultEvents.length > 0 ? new Set([...state.finishedTools, index]) : state.finishedTools,
           reasoningSignatures: Object.fromEntries(
             Object.entries(state.reasoningSignatures).filter(([key]) => key !== String(index)),
           ),
@@ -706,7 +703,6 @@ export const protocol = Protocol.make({
     initial: (request) => ({
       providerMetadataKey: request.model.route.providerMetadataKey ?? String(request.model.provider),
       tools: ToolStream.empty<number>(),
-      finishedTools: new Set<number>(),
       pendingFinish: undefined,
       hasToolCalls: false,
       lifecycle: Lifecycle.initial(),

packages/ai/src/protocols/open-responses.ts

@@ -391,19 +391,17 @@ export interface ParserState {
   readonly name: string
   readonly providerMetadataKey: string
   readonly tools: ToolStream.State<string>
-  // Call ids stay independent of item ids, which may be omitted or reused.
-  readonly completedTools: ReadonlySet<string>
   readonly hasFunctionCall: boolean
   readonly lifecycle: Lifecycle.State
   readonly outputItems: Readonly<Record<number, string>>
-  readonly message: { readonly id: string; readonly phase: MessagePhase | null | undefined } | undefined
+  readonly messageItems: ReadonlySet<string>
+  readonly messagePhases: Readonly<Record<string, MessagePhase | null>>
   readonly reasoningItems: Readonly<Record<string, ReasoningStreamItem>>
 }
 
 type ReasoningSummaryStatus = "active" | "can-conclude" | "concluded"
 
 interface ReasoningStreamItem {
-  readonly open: boolean
   readonly encryptedContent: string | null | undefined
   // Keyed by the wire protocol's numeric `summary_index`. JS object keys coerce to
   // strings, but typing the map as `Record<number, ...>` documents intent
@@ -828,16 +826,16 @@ const TERMINAL_TYPES = new Set(["error", "response.completed", "response.incompl
 export const terminal = (event: Event) => TERMINAL_TYPES.has(event.type)
 
 const onOutputTextDelta = (state: ParserState, event: Event, id: string): StepResult => {
-  if (!event.delta || state.message?.id !== id) return [state, NO_EVENTS]
+  if (!event.delta || !state.messageItems.has(id)) return [state, NO_EVENTS]
   const events: LLMEvent[] = []
-  const phase = state.message.phase
+  const phase = state.messagePhases[id]
   const metadata = providerMetadata(state, { itemId: id, ...(phase === undefined ? {} : { phase }) })
   const lifecycle = Lifecycle.textStart(state.lifecycle, events, id, metadata)
   return [{ ...state, lifecycle: Lifecycle.textDelta(lifecycle, events, id, event.delta) }, events]
 }
 
 const onOutputTextDone = (state: ParserState, event: Event, id: string): StepResult => {
-  if (state.message?.id === id) {
+  if (state.messageItems.has(id)) {
     if (state.lifecycle.text.has(id) || event.text === undefined) return [state, NO_EVENTS]
     return onOutputTextDelta(state, { ...event, delta: event.text }, id)
   }
@@ -848,62 +846,18 @@ const onOutputTextDone = (state: ParserState, event: Event, id: string): StepRes
 export const outputItemID = (state: ParserState, event: Event) =>
   event.output_index === undefined ? event.item_id : (state.outputItems[event.output_index] ?? event.item_id)
 
-const startReasoningSummaryPart = (state: ParserState, itemID: string, index: number): StepResult => {
+export const onReasoningDelta = (state: ParserState, event: Event, itemID: string): StepResult => {
   const item = state.reasoningItems[itemID]
-  if (!item?.open || index === 0 || item.summaryParts[index] !== undefined) return [state, NO_EVENTS]
-
+  if (!event.delta || !item) return [state, NO_EVENTS]
+  const index = event.summary_index ?? 0
   const events: LLMEvent[] = []
-  const lifecycle = Object.entries(item.summaryParts)
-    .filter((entry) => entry[1] !== "concluded")
-    .reduce(
-      (lifecycle, entry) =>
-        Lifecycle.reasoningEnd(lifecycle, events, `${itemID}:${entry[0]}`, providerMetadata(state, { itemId: itemID })),
-      state.lifecycle,
-    )
   return [
     {
       ...state,
-      lifecycle: Lifecycle.reasoningStart(
-        lifecycle,
-        events,
-        `${itemID}:${index}`,
-        providerMetadata(state, { itemId: itemID, reasoningEncryptedContent: item.encryptedContent ?? null }),
-      ),
+      lifecycle: Lifecycle.reasoningDelta(state.lifecycle, events, `${itemID}:${index}`, event.delta),
       reasoningItems: {
         ...state.reasoningItems,
-        [itemID]: {
-          ...item,
-          summaryParts: {
-            ...Object.fromEntries(
-              Object.entries(item.summaryParts).map((entry) =>
-                entry[1] === "concluded" ? entry : [entry[0], "concluded" as const],
-              ),
-            ),
-            [index]: "active",
-          },
-        },
-      },
-    },
-    events,
-  ]
-}
-
-export const onReasoningDelta = (state: ParserState, event: Event, itemID: string): StepResult => {
-  const item = state.reasoningItems[itemID]
-  if (!event.delta || !item?.open) return [state, NO_EVENTS]
-  const index = event.summary_index ?? 0
-  if (item.summaryParts[index] === "concluded") return [state, NO_EVENTS]
-  const [started, emitted] = startReasoningSummaryPart(state, itemID, index)
-  const current = started.reasoningItems[itemID]
-  if (!current) return [started, emitted]
-  const events: LLMEvent[] = [...emitted]
-  return [
-    {
-      ...started,
-      lifecycle: Lifecycle.reasoningDelta(started.lifecycle, events, `${itemID}:${index}`, event.delta),
-      reasoningItems: {
-        ...started.reasoningItems,
-        [itemID]: { ...current, deltaIndexes: new Set([...current.deltaIndexes, index]) },
+        [itemID]: { ...item, deltaIndexes: new Set([...item.deltaIndexes, index]) },
       },
     },
     events,
@@ -915,7 +869,7 @@ export const onReasoningDelta = (state: ParserState, event: Event, itemID: strin
 // as a single delta unless that summary index already streamed one.
 export const onReasoningDone = (state: ParserState, event: Event, itemID: string): StepResult => {
   const item = state.reasoningItems[itemID]
-  if (!item?.open || typeof event.text !== "string") return [state, NO_EVENTS]
+  if (!item || typeof event.text !== "string") return [state, NO_EVENTS]
   const index = event.summary_index ?? 0
   if (item.deltaIndexes.has(index)) return [state, NO_EVENTS]
   return onReasoningDelta(state, { ...event, delta: event.text }, itemID)
@@ -924,48 +878,32 @@ export const onReasoningDone = (state: ParserState, event: Event, itemID: string
 const reasoningMetadata = (state: ParserState, item: StreamItem & { id: string }) =>
   providerMetadata(state, { itemId: item.id, reasoningEncryptedContent: item.encrypted_content ?? null })
 
-// Responses APIs normally stream reasoning items in this order:
+// Responses APIs stream reasoning items in a stable order:
 //   `output_item.added` (reasoning) →
 //     `reasoning_summary_part.added` (index=0) →
 //     `reasoning_summary_text.delta` →
 //     `reasoning_summary_part.done` (index=0) →
 //     (repeat for index>0) →
 //   `output_item.done` (reasoning).
-// `onOutputItemAdded` seeds the per-item entry, while each later part start is
-// also an implicit boundary for the previous part. This keeps the common event
-// lifecycle ordered when a compatible provider omits or delays a part-done event.
+// The handlers below rely on this ordering: `onOutputItemAdded` seeds the
+// per-item entry, `onReasoningSummaryPartAdded` for `summary_index === 0`
+// short-circuits when the entry already exists, and higher-index handlers
+// fold against the same entry. Behaviour for out-of-order events is
+// best-effort, not guaranteed.
 const onOutputItemAdded = (state: ParserState, event: Event): StepResult => {
   const item = event.item
   if (item?.type === "message" && item.id !== undefined) {
-    const itemID = item.id
     const phase = messagePhase(item.phase)
-    // A new message closes earlier messages, including ones that never streamed.
-    const events: LLMEvent[] = []
-    const lifecycle = [...state.lifecycle.text]
-      .filter((id) => id !== itemID)
-      .reduce((lifecycle, id) => {
-        const openPhase = state.message?.id === id ? state.message.phase : undefined
-        return Lifecycle.textEnd(
-          lifecycle,
-          events,
-          id,
-          providerMetadata(state, { itemId: id, ...(openPhase === undefined ? {} : { phase: openPhase }) }),
-        )
-      }, state.lifecycle)
     return [
       {
         ...state,
-        lifecycle,
-        message: {
-          id: itemID,
-          phase: phase === undefined && state.message?.id === itemID ? state.message.phase : phase,
-        },
+        messageItems: new Set([...state.messageItems, item.id]),
+        messagePhases: phase === undefined ? state.messagePhases : { ...state.messagePhases, [item.id]: phase },
       },
-      events,
+      NO_EVENTS,
     ]
   }
   if (item && isReasoningItem(item)) {
-    if (state.reasoningItems[item.id] !== undefined) return [state, NO_EVENTS]
     const events: LLMEvent[] = []
     return [
       {
@@ -974,7 +912,6 @@ const onOutputItemAdded = (state: ParserState, event: Event): StepResult => {
         reasoningItems: {
           ...state.reasoningItems,
           [item.id]: {
-            open: true,
             encryptedContent: item.encrypted_content,
             summaryParts: { 0: "active" },
             deltaIndexes: new Set(),
@@ -986,8 +923,6 @@ const onOutputItemAdded = (state: ParserState, event: Event): StepResult => {
   }
   if (item?.type !== "function_call" || !item.call_id) return [state, NO_EVENTS]
   const id = item.id ?? item.call_id
-  if (Object.values(state.tools).some((tool) => tool?.id === item.call_id) || state.completedTools.has(item.call_id))
-    return [state, NO_EVENTS]
   const metadata = item.id !== undefined ? providerMetadata(state, { itemId: item.id }) : undefined
   const events: LLMEvent[] = []
   const lifecycle = Lifecycle.stepStart(state.lifecycle, events)
@@ -1008,14 +943,55 @@ const onOutputItemAdded = (state: ParserState, event: Event): StepResult => {
 
 const onReasoningSummaryPartAdded = (state: ParserState, event: Event): StepResult => {
   if (event.item_id === undefined || event.summary_index === undefined) return [state, NO_EVENTS]
-  return startReasoningSummaryPart(state, event.item_id, event.summary_index)
+  const item = state.reasoningItems[event.item_id]
+  if (!item) return [state, NO_EVENTS]
+  if (event.summary_index === 0) return [state, NO_EVENTS]
+
+  const events: LLMEvent[] = []
+  const closed = Object.entries(item.summaryParts)
+    .filter((entry) => entry[1] === "can-conclude")
+    .reduce(
+      (lifecycle, entry) =>
+        Lifecycle.reasoningEnd(
+          lifecycle,
+          events,
+          `${event.item_id}:${entry[0]}`,
+          providerMetadata(state, { itemId: event.item_id }),
+        ),
+      state.lifecycle,
+    )
+  return [
+    {
+      ...state,
+      lifecycle: Lifecycle.reasoningStart(
+        closed,
+        events,
+        `${event.item_id}:${event.summary_index}`,
+        providerMetadata(state, { itemId: event.item_id, reasoningEncryptedContent: item.encryptedContent ?? null }),
+      ),
+      reasoningItems: {
+        ...state.reasoningItems,
+        [event.item_id]: {
+          ...item,
+          summaryParts: {
+            ...Object.fromEntries(
+              Object.entries(item.summaryParts).map((entry) =>
+                entry[1] === "can-conclude" ? [entry[0], "concluded" as const] : entry,
+              ),
+            ),
+            [event.summary_index]: "active",
+          },
+        },
+      },
+    },
+    events,
+  ]
 }
 
 const onReasoningSummaryPartDone = (state: ParserState, event: Event): StepResult => {
   if (event.item_id === undefined || event.summary_index === undefined) return [state, NO_EVENTS]
   const item = state.reasoningItems[event.item_id]
-  if (!item?.open) return [state, NO_EVENTS]
-  if (item.summaryParts[event.summary_index] !== "active") return [state, NO_EVENTS]
+  if (!item) return [state, NO_EVENTS]
   return [
     {
       ...state,
@@ -1071,8 +1047,11 @@ const onOutputItemDone = Effect.fn("OpenResponses.onOutputItemDone")(function* (
 
   if (item.type === "message" && item.id !== undefined) {
     const itemPhase = messagePhase(item.phase)
-    const phase = itemPhase === undefined && state.message?.id === item.id ? state.message.phase : itemPhase
+    const phase = itemPhase === undefined ? state.messagePhases[item.id] : itemPhase
     const events: LLMEvent[] = []
+    const messageItems = new Set(state.messageItems)
+    messageItems.delete(item.id)
+    const { [item.id]: _phase, ...messagePhases } = state.messagePhases
     return [
       {
         ...state,
@@ -1082,7 +1061,8 @@ const onOutputItemDone = Effect.fn("OpenResponses.onOutputItemDone")(function* (
           item.id,
           providerMetadata(state, { itemId: item.id, ...(phase === undefined ? {} : { phase }) }),
         ),
-        message: state.message?.id === item.id ? undefined : state.message,
+        messageItems,
+        messagePhases,
       },
       events,
     ] satisfies StepResult
@@ -1090,36 +1070,20 @@ const onOutputItemDone = Effect.fn("OpenResponses.onOutputItemDone")(function* (
 
   if (item.type === "function_call") {
     if (!item.call_id || !item.name) return [state, NO_EVENTS] satisfies StepResult
-    const callID = item.call_id
-    if (state.completedTools.has(callID)) return [state, NO_EVENTS] satisfies StepResult
-    const metadata = item.id !== undefined ? providerMetadata(state, { itemId: item.id }) : undefined
-    const fallback = item.id ?? callID
-    // Match the pending tool by call id so item events that disagree on
-    // whether `item.id` is present still resolve the same call.
-    const registered =
-      state.tools[fallback] !== undefined
-        ? fallback
-        : Object.keys(state.tools).find((key) => state.tools[key]?.id === callID)
-    const id = registered ?? fallback
-    const tools =
-      registered !== undefined
-        ? state.tools
-        : ToolStream.start(state.tools, id, {
-            id: callID,
-            name: item.name,
-            providerMetadata: metadata,
-          })
+    const id = item.id ?? item.call_id
+    const tools = state.tools[id]
+      ? state.tools
+      : ToolStream.start(state.tools, id, {
+          id: item.call_id,
+          name: item.name,
+          providerMetadata: item.id !== undefined ? providerMetadata(state, { itemId: item.id }) : undefined,
+        })
     const result =
       item.arguments === undefined
         ? yield* ToolStream.finish(state.id, tools, id)
         : yield* ToolStream.finishWithInput(state.id, tools, id, item.arguments)
     const events: LLMEvent[] = []
-    const finished = result.events ?? []
-    // A done-only call never streamed a start event, so open its lifecycle here.
-    const resultEvents =
-      registered !== undefined || finished.length === 0
-        ? finished
-        : [LLMEvent.toolInputStart({ id: callID, name: item.name, providerMetadata: metadata }), ...finished]
+    const resultEvents = result.events ?? []
     const lifecycle = resultEvents.length ? Lifecycle.stepStart(state.lifecycle, events) : state.lifecycle
     events.push(...resultEvents)
     return [
@@ -1130,7 +1094,6 @@ const onOutputItemDone = Effect.fn("OpenResponses.onOutputItemDone")(function* (
           resultEvents.some((event) => LLMEvent.is.toolCall(event) || LLMEvent.is.toolInputError(event)) ||
           state.hasFunctionCall,
         tools: result.tools,
-        completedTools: new Set([...state.completedTools, callID]),
       },
       events,
     ] satisfies StepResult
@@ -1141,49 +1104,20 @@ const onOutputItemDone = Effect.fn("OpenResponses.onOutputItemDone")(function* (
     const metadata = reasoningMetadata(state, item)
     const reasoningItem = state.reasoningItems[item.id]
     if (reasoningItem) {
-      if (!reasoningItem.open) return [state, NO_EVENTS] satisfies StepResult
       const lifecycle = Object.entries(reasoningItem.summaryParts)
         .filter((entry) => entry[1] === "active" || entry[1] === "can-conclude")
         .reduce(
           (lifecycle, entry) => Lifecycle.reasoningEnd(lifecycle, events, `${item.id}:${entry[0]}`, metadata),
           state.lifecycle,
         )
-      return [
-        {
-          ...state,
-          lifecycle,
-          reasoningItems: {
-            ...state.reasoningItems,
-            [item.id]: {
-              ...reasoningItem,
-              open: false,
-              encryptedContent: item.encrypted_content ?? reasoningItem.encryptedContent,
-            },
-          },
-        },
-        events,
-      ] satisfies StepResult
+      const { [item.id]: _removed, ...reasoningItems } = state.reasoningItems
+      return [{ ...state, lifecycle, reasoningItems }, events] satisfies StepResult
     }
     if (!state.lifecycle.reasoning.has(item.id)) {
       const lifecycle = Lifecycle.stepStart(state.lifecycle, events)
       events.push(LLMEvent.reasoningStart({ id: item.id, providerMetadata: metadata }))
       events.push(LLMEvent.reasoningEnd({ id: item.id, providerMetadata: metadata }))
-      return [
-        {
-          ...state,
-          lifecycle,
-          reasoningItems: {
-            ...state.reasoningItems,
-            [item.id]: {
-              open: false,
-              encryptedContent: item.encrypted_content,
-              summaryParts: { 0: "concluded" },
-              deltaIndexes: new Set(),
-            },
-          },
-        },
-        events,
-      ] satisfies StepResult
+      return [{ ...state, lifecycle }, events] satisfies StepResult
     }
     return [
       { ...state, lifecycle: Lifecycle.reasoningEnd(state.lifecycle, events, item.id, metadata) },
@@ -1205,7 +1139,7 @@ const onResponseFinish = Effect.fn("OpenResponses.onResponseFinish")(function* (
             if (
               id === undefined ||
               ((item.type !== "function_call" || !current.tools[id]) &&
-                (item.type !== "reasoning" || !current.reasoningItems[id]?.open))
+                (item.type !== "reasoning" || !current.reasoningItems[id]))
             )
               return Effect.succeed([current, events] satisfies StepResult)
             return onOutputItemDone(current, { type: "response.output_item.done", item }).pipe(
@@ -1322,13 +1256,6 @@ export const step = (state: ParserState, input: Event) => {
   if (event.type === "response.output_item.added") {
     if (event.item?.type === "message" && event.item.id === undefined)
       return ProviderShared.eventError(state.id, `${event.type} message is missing id`)
-    if (
-      event.item &&
-      isReasoningItem(event.item) &&
-      state.reasoningItems[event.item.id] === undefined &&
-      state.lifecycle.reasoning.size > 0
-    )
-      return ProviderShared.eventError(state.id, `${event.type} started reasoning before the previous item ended`)
     const id = event.item?.id ?? (event.item?.type === "function_call" ? event.item.call_id : undefined)
     return Effect.succeed(
       onOutputItemAdded(
@@ -1378,10 +1305,10 @@ export const initial = (request: LLMRequest, extension: Extension = BASE): Parse
   providerMetadataKey: request.model.route.providerMetadataKey ?? "openresponses",
   hasFunctionCall: false,
   tools: ToolStream.empty<string>(),
-  completedTools: new Set<string>(),
   lifecycle: Lifecycle.initial(),
   outputItems: {},
-  message: undefined,
+  messageItems: new Set<string>(),
+  messagePhases: {},
   reasoningItems: {},
 })
 

packages/ai/src/protocols/openai-chat.ts

@@ -3,7 +3,6 @@ import { Tool } from "@opencode-ai/schema/tool"
 import { Route } from "../route/client.js"
 import { Auth } from "../route/auth.js"
 import { Endpoint } from "../route/endpoint.js"
-import { Framing } from "../route/framing.js"
 import { HttpTransport } from "../route/transport/index.js"
 import { Protocol } from "../route/protocol.js"
 import {
@@ -246,8 +245,6 @@ export const OpenAIChatEvent = Schema.StructWithRest(
   [Schema.Record(Schema.String, Schema.Unknown)],
 )
 export type OpenAIChatEvent = Schema.Schema.Type<typeof OpenAIChatEvent>
-const DONE = "[DONE]" as const
-const OpenAIChatStreamEvent = Schema.Union([Schema.Literal(DONE), Protocol.jsonEvent(OpenAIChatEvent)])
 type OpenAIChatRequestMessage = LLMRequest["messages"][number]
 
 interface PendingToolDelta {
@@ -1169,7 +1166,7 @@ export const protocol = Protocol.make({
     from: fromRequest,
   },
   stream: {
-    event: OpenAIChatStreamEvent,
+    event: Protocol.jsonEvent(OpenAIChatEvent),
     initial: (request) => ({
       providerMetadataKey: request.model.route.providerMetadataKey ?? String(request.model.provider),
       tools: ToolStream.empty<number>(),
@@ -1183,14 +1180,12 @@ export const protocol = Protocol.make({
       nextToolIndex: 0,
       requireFinishReason: request.model.compatibility?.requireFinishReason ?? true,
     }),
-    step: (state: ParserState, event) => (event === DONE ? Effect.succeed([state, []] as const) : step(state, event)),
-    terminal: (event) => event === DONE,
+    step,
     onHalt: finishEvents,
   },
 })
 
-export const framing = Framing.sseWithDone
-export const httpTransport = HttpTransport.sseJson.with<OpenAIChatBody>().with({ framing })
+export const httpTransport = HttpTransport.sseJson.with<OpenAIChatBody>()
 
 export const route = Route.make({
   id: ADAPTER,

packages/ai/src/protocols/openai-compatible-chat.ts

@@ -1,5 +1,6 @@
 import { Route, type RouteRoutedLanguageModelInput } from "../route/client.js"
 import { Endpoint } from "../route/endpoint.js"
+import { Framing } from "../route/framing.js"
 import * as OpenAIChat from "./openai-chat.js"
 
 const ADAPTER = "openai-compatible-chat"
@@ -18,7 +19,7 @@ export const route = Route.make({
   providerMetadataKey: "openai",
   protocol: OpenAIChat.protocol,
   endpoint: Endpoint.path("/chat/completions"),
-  framing: OpenAIChat.framing,
+  framing: Framing.sse,
 })
 
 export * as OpenAICompatibleChat from "./openai-compatible-chat.js"

packages/ai/src/protocols/shared.ts

@@ -207,16 +207,15 @@ export const errorText = (error: unknown) => {
 
 /**
  * `framing` step for Server-Sent Events. Decodes UTF-8, runs the SSE channel
- * decoder, optionally filters named events, and drops empty events. `[DONE]`
- * is dropped by default or retained for protocols that use it as their stream
- * boundary. Retry control events are ignored without interrupting the stream.
+ * decoder, optionally filters named events, and drops empty / `[DONE]`
+ * keep-alive events so the protocol event schema sees one JSON string per
+ * element. Retry control events are ignored without interrupting the stream.
  * Decoder failures become provider output errors so the public error channel
  * stays `AIError`.
  */
 export const sseFraming = (
   bytes: Stream.Stream<Uint8Array, AIError>,
   events?: ReadonlySet<string>,
-  includeDone = false,
 ): Stream.Stream<string, AIError> =>
   bytes.pipe(
     Stream.decodeText(),
@@ -241,7 +240,7 @@ export const sseFraming = (
       (event) =>
         (events === undefined || events.has(event.event)) &&
         event.data.length > 0 &&
-        (event.data !== "[DONE]" || includeDone || (events !== undefined && event.event !== "message")),
+        (event.data !== "[DONE]" || (events !== undefined && event.event !== "message")),
     ),
     Stream.map((event) => event.data),
   )

packages/ai/src/protocols/utils/lifecycle.ts

@@ -62,31 +62,22 @@ export const reasoningEnd = (
   events: LLMEvent[],
   id: string,
   providerMetadata?: ProviderMetadata,
-  /** Authoritative complete value; replaces accumulated deltas when present. */
-  text?: string,
 ): State => {
   if (!state.reasoning.has(id)) return state
   const stepped = stepStart(state, events)
-  events.push(LLMEvent.reasoningEnd({ id, text, providerMetadata }))
+  events.push(LLMEvent.reasoningEnd({ id, providerMetadata }))
   const reasoning = new Set(stepped.reasoning)
   reasoning.delete(id)
   return { ...stepped, reasoning }
 }
 
-export const textEnd = (
-  state: State,
-  events: LLMEvent[],
-  id: string,
-  providerMetadata?: ProviderMetadata,
-  /** Authoritative complete value; replaces accumulated deltas when present. */
-  text?: string,
-): State => {
+export const textEnd = (state: State, events: LLMEvent[], id: string, providerMetadata?: ProviderMetadata): State => {
   if (!state.text.has(id)) return state
   const stepped = stepStart(state, events)
-  events.push(LLMEvent.textEnd({ id, text, providerMetadata }))
-  const open = new Set(stepped.text)
-  open.delete(id)
-  return { ...stepped, text: open }
+  events.push(LLMEvent.textEnd({ id, providerMetadata }))
+  const text = new Set(stepped.text)
+  text.delete(id)
+  return { ...stepped, text }
 }
 
 const closeOpenBlocks = (state: State, events: LLMEvent[]): State => {

packages/ai/src/provider-error.ts

@@ -37,7 +37,6 @@ const patterns = [
   /too large for model with \d+ maximum context length/i,
   /prompt has [\d,]+ tokens?, but the configured context size is [\d,]+ tokens?/i,
   /model_context_window_exceeded/i,
-  /range of input length should be/i,
   /too many tokens/i,
   /token limit exceeded/i,
   /request_too_large/i,
@@ -60,7 +59,6 @@ export const isContextOverflowFailure = (failure: unknown) =>
 
 const decodeJson = Schema.decodeUnknownOption(Schema.fromJsonString(Schema.Unknown))
 const QUOTA_CODES = new Set(["insufficient_quota", "usage_not_included", "billing_error"])
-const AUTH_CODES = new Set(["authentication_error", "permission_error"])
 const SERVER_CODES = new Set([
   "api_error",
   "internal_error",
@@ -76,6 +74,7 @@ const INVALID_REQUEST_CODES = new Set(["invalid_prompt", "invalid_request_error"
 const RATE_LIMIT_TEXT = /rate increased too quickly|rate[-_\s]?limit|too[_\s]?many[_\s]?requests/i
 const QUOTA_TEXT = /insufficient[-_\s]?quota|quota[-_\s]?exceeded/i
 const CONTENT_POLICY_TEXT = /content[-_\s]?policy|content_filter|safety/i
+const NETWORK_ERROR_TEXT = /network[-_\s]error/i
 
 export interface ProviderFailure {
   readonly message: string
@@ -91,12 +90,8 @@ export interface ProviderFailure {
   readonly rateLimit?: HttpRateLimitDetails | undefined
 }
 
-// Classification records affirmative evidence about a failure. Deterministic
-// failures need positive identification (a 4xx status, quota/auth/policy
-// signals); anything unrecognized stays UnknownProvider, which the session
-// retry policy treats as retry-eligible because transient failures arrive in
-// unpredictable shapes while deterministic rejections almost always carry a
-// status or known code.
+// Keep HTTP failures and provider-reported stream failures on one typed path so
+// session retry policy never needs provider-specific string matching.
 export function classifyProviderFailure(input: ProviderFailure): AIError["reason"] {
   const details = { message: input.message, body: input.rawBody, http: input.http, cause: input.cause }
   const body = input.rawBody ?? ""
@@ -121,33 +116,46 @@ export function classifyProviderFailure(input: ProviderFailure): AIError["reason
   if (CONTENT_POLICY_TEXT.test(text)) return new ContentPolicyError(details)
   if (codes.some((code) => QUOTA_CODES.has(code)) || (input.status === 429 && QUOTA_TEXT.test(text)))
     return new QuotaExceededError(details)
-  if (input.status === 401 || input.status === 403 || codes.some((code) => AUTH_CODES.has(code)))
-    return new AuthenticationError(details)
+  if (input.status === 401) return new AuthenticationError({ ...details, kind: "invalid" })
+  if (input.status === 403) return new AuthenticationError({ ...details, kind: "insufficient-permissions" })
+  if (codes.includes("authentication_error")) return new AuthenticationError({ ...details, kind: "invalid" })
+  if (codes.includes("permission_error"))
+    return new AuthenticationError({ ...details, kind: "insufficient-permissions" })
   if (
-    input.status === 429 ||
-    codes.some(
-      (code) => code.includes("rate_limit") || code === "too_many_requests" || code === "throttlingexception",
-    ) ||
-    RATE_LIMIT_TEXT.test(text)
+    codes.some((code) => code.includes("rate_limit") || code === "too_many_requests" || code === "throttlingexception")
   )
     return new RateLimitError({
       ...details,
       retryAfterMs: input.retryAfterMs,
       rateLimit: input.rateLimit,
     })
-  if (
-    input.status === 408 ||
-    input.status === 409 ||
-    (input.status !== undefined && input.status >= 500) ||
-    codes.some((code) => SERVER_CODES.has(code) || code.includes("exhausted") || code.includes("unavailable"))
-  )
+  if (RATE_LIMIT_TEXT.test(text))
+    return new RateLimitError({
+      ...details,
+      retryAfterMs: input.retryAfterMs,
+      rateLimit: input.rateLimit,
+    })
+  if (NETWORK_ERROR_TEXT.test(text)) return new ProviderInternalError(details)
+  if (codes.some((code) => SERVER_CODES.has(code) || code.includes("exhausted") || code.includes("unavailable")))
+    return new ProviderInternalError({
+      ...details,
+      retryAfterMs: input.retryAfterMs,
+    })
+  if (input.status === 429) {
+    return new RateLimitError({
+      ...details,
+      retryAfterMs: input.retryAfterMs,
+      rateLimit: input.rateLimit,
+    })
+  }
+  if (input.status === 408 || input.status === 409 || (input.status !== undefined && input.status >= 500))
     return new ProviderInternalError({
       ...details,
       retryAfterMs: input.retryAfterMs,
     })
   if (codes.some((code) => INVALID_REQUEST_CODES.has(code))) return new InvalidRequestError(details)
-  // Any remaining 4xx is a deterministic rejection of this request.
-  if (input.status !== undefined && input.status >= 400 && input.status < 500) return new InvalidRequestError(details)
+  if (input.status === 400 || input.status === 404 || input.status === 413 || input.status === 422)
+    return new InvalidRequestError(details)
   return new UnknownProviderError(details)
 }
 

packages/ai/src/providers/groq.ts

@@ -5,6 +5,7 @@ import { ProviderShared } from "../protocols/shared.js"
 import { AuthOptions, type ProviderAuthOption } from "../route/auth-options.js"
 import { Route, type RouteDefaultsInput } from "../route/client.js"
 import { Endpoint } from "../route/endpoint.js"
+import { Framing } from "../route/framing.js"
 import { Protocol } from "../route/protocol.js"
 import { ProviderID, type ModelID, type LLMRequest } from "../schema/index.js"
 import { profiles } from "./openai-compatible-profile.js"
@@ -74,7 +75,7 @@ export const route = Route.make({
   providerMetadataKey: "openai",
   protocol,
   endpoint: Endpoint.path("/chat/completions", { baseURL: profiles.groq.baseURL }),
-  framing: OpenAIChat.framing,
+  framing: Framing.sse,
 })
 
 export const configure = (input: LanguageModelOptions = {}) => {

packages/ai/src/providers/openrouter.ts

@@ -1,6 +1,7 @@
 import { Effect, Schema } from "effect"
 import { Route, type RouteDefaultsInput } from "../route/client.js"
 import { Endpoint } from "../route/endpoint.js"
+import { Framing } from "../route/framing.js"
 import { Protocol } from "../route/protocol.js"
 import { AuthOptions, type ProviderAuthOption } from "../route/auth-options.js"
 import { ProviderID, type CacheHint, type ModelID } from "../schema/index.js"
@@ -166,7 +167,7 @@ export const route = Route.make({
   providerMetadataKey: "openrouter",
   protocol,
   endpoint: Endpoint.path("/chat/completions", { baseURL: profile.baseURL }),
-  framing: OpenAIChat.framing,
+  framing: Framing.sse,
 })
 
 export const routes = [route]

packages/ai/src/route/auth.ts

@@ -139,7 +139,7 @@ const toAIError = (error: AuthError): AIError => {
     return new AIError({
       reason:
         error instanceof MissingCredentialError
-          ? new AuthenticationError({ message: error.message, cause: error })
+          ? new AuthenticationError({ message: error.message, cause: error, kind: "missing" })
           : new InvalidRequestError({ message: `Failed to resolve auth config: ${error.message}`, cause: error }),
     })
   }

packages/ai/src/route/framing.ts

@@ -8,8 +8,8 @@ import type { AIError } from "../schema/index.js"
  * `Framing` is the byte-stream-shaped seam between transport and protocol:
  *
  * - SSE (`Framing.sse`) — UTF-8 decode the body, run the SSE channel decoder,
- *   and emit the `data:` payload of each non-empty event. The default drops
- *   `[DONE]`; protocols that use it as a terminal select `sseWithDone`.
+ *   drop empty / `[DONE]` keep-alives. Each emitted frame is the JSON `data:`
+ *   payload of one event.
  * - AWS event stream — length-prefixed binary frames with CRC checksums.
  *   Each emitted frame is one parsed binary event record.
  *
@@ -26,12 +26,6 @@ export interface Definition<Frame> {
 /** Server-Sent Events framing. Used by every JSON-streaming HTTP provider. */
 export const sse: Definition<string> = { id: "sse", frame: ProviderShared.sseFraming }
 
-/** Server-Sent Events framing that retains the conventional `[DONE]` sentinel. */
-export const sseWithDone: Definition<string> = {
-  id: "sse",
-  frame: (bytes) => ProviderShared.sseFraming(bytes, undefined, true),
-}
-
 /** SSE framing restricted to protocol-recognized event names. */
 export const sseEvents = (events: ReadonlySet<string>): Definition<string> => ({
   id: "sse",

packages/ai/src/schema/errors.ts

@@ -44,7 +44,10 @@ export class NoRouteError extends Schema.TaggedError<NoRouteError>("AI.Error.NoR
 
 export class AuthenticationError extends Schema.TaggedError<AuthenticationError>("AI.Error.Authentication")(
   "Authentication",
-  ReasonFields,
+  {
+    ...ReasonFields,
+    kind: Schema.Literals(["missing", "invalid", "expired", "insufficient-permissions", "unknown"]),
+  },
 ) {}
 
 export class RateLimitError extends Schema.TaggedError<RateLimitError>("AI.Error.RateLimit")("RateLimit", {

packages/ai/src/schema/events.ts

@@ -112,8 +112,6 @@ export type TextDelta = Schema.Schema.Type<typeof TextDelta>
 export const TextEnd = Schema.Struct({
   type: Schema.tag("text-end"),
   id: ContentBlockID,
-  /** Authoritative complete value; replaces accumulated deltas when present. */
-  text: Schema.optional(Schema.String),
   providerMetadata: Schema.optional(ProviderMetadata),
 }).annotate({ identifier: "LLM.Event.TextEnd" })
 export type TextEnd = Schema.Schema.Type<typeof TextEnd>
@@ -136,8 +134,6 @@ export type ReasoningDelta = Schema.Schema.Type<typeof ReasoningDelta>
 export const ReasoningEnd = Schema.Struct({
   type: Schema.tag("reasoning-end"),
   id: ContentBlockID,
-  /** Authoritative complete value; replaces accumulated deltas when present. */
-  text: Schema.optional(Schema.String),
   providerMetadata: Schema.optional(ProviderMetadata),
 }).annotate({ identifier: "LLM.Event.ReasoningEnd" })
 export type ReasoningEnd = Schema.Schema.Type<typeof ReasoningEnd>
@@ -332,32 +328,17 @@ export const LLMEvent = Object.assign(llmEventTagged, {
 })
 export type LLMEvent = Schema.Schema.Type<typeof llmEventTagged>
 
-/** Joins deltas per fragment, letting an authoritative end value replace that fragment's accumulated deltas. */
-const joinFragments = <Delta extends { id: string; text: string }, End extends { id: string; text?: string }>(
-  events: ReadonlyArray<LLMEvent>,
-  isDelta: (event: LLMEvent) => event is Extract<LLMEvent, Delta>,
-  isEnd: (event: LLMEvent) => event is Extract<LLMEvent, End>,
-) => {
-  const order: string[] = []
-  const parts = new Map<string, string>()
-  for (const event of events) {
-    if (isDelta(event)) {
-      if (!parts.has(event.id)) order.push(event.id)
-      parts.set(event.id, (parts.get(event.id) ?? "") + event.text)
-    }
-    if (isEnd(event) && event.text !== undefined) {
-      if (!parts.has(event.id)) order.push(event.id)
-      parts.set(event.id, event.text)
-    }
-  }
-  return order.map((id) => parts.get(id)).join("")
-}
-
 const responseText = (events: ReadonlyArray<LLMEvent>) =>
-  joinFragments(events, LLMEvent.is.textDelta, LLMEvent.is.textEnd)
+  events
+    .filter(LLMEvent.is.textDelta)
+    .map((event) => event.text)
+    .join("")
 
 const responseReasoning = (events: ReadonlyArray<LLMEvent>) =>
-  joinFragments(events, LLMEvent.is.reasoningDelta, LLMEvent.is.reasoningEnd)
+  events
+    .filter(LLMEvent.is.reasoningDelta)
+    .map((event) => event.text)
+    .join("")
 
 const responseUsage = (events: ReadonlyArray<LLMEvent>) =>
   events.reduce<Usage | undefined>(
@@ -464,11 +445,10 @@ const reduceTextDelta = (state: ResponseState, event: TextDelta): ResponseState
 const reduceTextEnd = (state: ResponseState, event: TextEnd): ResponseState => {
   const current = state.textParts[event.id]
   if (!current) return state
-  const text = event.text ?? current.text
   const providerMetadata = event.providerMetadata ?? current.providerMetadata
   return {
-    ...replaceContent(state, current.contentIndex, textContent(text, providerMetadata)),
-    textParts: { ...state.textParts, [event.id]: { ...current, text, providerMetadata } },
+    ...replaceContent(state, current.contentIndex, textContent(current.text, providerMetadata)),
+    textParts: { ...state.textParts, [event.id]: { ...current, providerMetadata } },
   }
 }
 
@@ -498,11 +478,10 @@ const reduceReasoningDelta = (state: ResponseState, event: ReasoningDelta): Resp
 const reduceReasoningEnd = (state: ResponseState, event: ReasoningEnd): ResponseState => {
   const current = state.reasoningParts[event.id]
   if (!current) return state
-  const text = event.text ?? current.text
   const providerMetadata = event.providerMetadata ?? current.providerMetadata
   return {
-    ...replaceContent(state, current.contentIndex, reasoningContent(text, providerMetadata)),
-    reasoningParts: { ...state.reasoningParts, [event.id]: { ...current, text, providerMetadata } },
+    ...replaceContent(state, current.contentIndex, reasoningContent(current.text, providerMetadata)),
+    reasoningParts: { ...state.reasoningParts, [event.id]: { ...current, providerMetadata } },
   }
 }
 
@@ -600,12 +579,12 @@ export class LLMResponse extends Schema.Class<LLMResponse>("LLM.Response")({
   usage: Schema.optional(Usage),
   finishReason: FinishReasonDetails,
 }) {
-  /** Concatenated assistant text; each fragment's `text-end` value replaces its accumulated deltas when present. */
+  /** Concatenated assistant text assembled from streamed `text-delta` events. */
   get text() {
     return responseText(this.events)
   }
 
-  /** Concatenated reasoning text; each fragment's `reasoning-end` value replaces its accumulated deltas when present. */
+  /** Concatenated reasoning text assembled from streamed `reasoning-delta` events. */
   get reasoning() {
     return responseReasoning(this.events)
   }

packages/ai/src/testing.ts

@@ -1,6 +1,6 @@
 export * as TestLLM from "./testing.js"
 
-import { LLMClient } from "./route/client.js"
+import { LLMClient, type Interface as LLMClientShape } from "./route/client.js"
 import {
   LLMEvent,
   LLMResponse,
@@ -16,33 +16,13 @@ export type Response = readonly LLMEvent[] | Stream.Stream<LLMEvent, AIError>
 
 export type Gate = Readonly<{ started: Effect.Effect<void>; release: Effect.Effect<void> }>
 
-type ClientInterface = Context.Service.Shape<typeof LLMClient.Service>
-
-export type Responder = (request: LLMRequest) => Response
-
-export interface TestInterface extends ClientInterface {
-  /** Returns a snapshot of requests observed at execution time. */
-  readonly requests: () => Effect.Effect<readonly LLMRequest[]>
-  readonly push: (...responses: readonly Response[]) => Effect.Effect<void>
-  /** Replaces the fallback without changing queued responses. */
-  readonly always: (response: Response) => Effect.Effect<void>
-  /** Answers requests after the one-shot queue is exhausted; receives the original request. */
-  readonly serve: (responder: Responder) => Effect.Effect<void>
-  /** Waits for request arrivals, not output or completion. */
-  readonly wait: (count: number) => Effect.Effect<void>
-  readonly gate: () => Effect.Effect<Gate, never, Scope.Scope>
-}
-
-export class Test extends Context.Service<Test, TestInterface>()("@opencode/ai/TestLLM/Test") {}
-
-/** @deprecated Use TestInterface through Test and testLayer. */
 export interface Interface {
   readonly requests: LLMRequest[]
   readonly push: (...responses: readonly Response[]) => Effect.Effect<void>
   readonly always: (response: Response) => Effect.Effect<void>
   readonly wait: (count: number) => Effect.Effect<void>
   readonly gate: Effect.Effect<Gate, never, Scope.Scope>
-  readonly client: ClientInterface
+  readonly client: LLMClientShape
 }
 
 export interface LayerOptions {
@@ -51,7 +31,6 @@ export interface LayerOptions {
   readonly fallback?: Response
 }
 
-/** @deprecated Use Test and testLayer for normal client methods and test controls. */
 export class Service extends Context.Service<Service, Interface>()("@opencode/ai/TestLLM") {}
 
 export const complete = (
@@ -101,64 +80,59 @@ export const hangAfter = (...events: readonly LLMEvent[]) => Stream.concat(Strea
 
 const toStream = (response: Response) => (Stream.isStream(response) ? response : Stream.fromIterable(response))
 
-const make = (options: LayerOptions) =>
-  Effect.sync(() => {
-    const requests: LLMRequest[] = []
-    const responses: Response[] = []
-    let started = Deferred.makeUnsafe<void>()
-    let fallback: Response | Responder | undefined = options.fallback
-    let activeGate: { readonly started: Queue.Queue<void>; readonly release: Latch.Latch } | undefined
-    const wait = (count: number): Effect.Effect<void> =>
-      Effect.suspend(() =>
-        requests.length >= count ? Effect.void : Deferred.await(started).pipe(Effect.andThen(wait(count))),
-      )
+export const layer = (options: LayerOptions = {}) =>
+  Layer.effect(
+    Service,
+    Effect.gen(function* () {
+      const requests: LLMRequest[] = []
+      const responses: Response[] = []
+      let started = Deferred.makeUnsafe<void>()
+      let fallback = options.fallback
+      let activeGate: { readonly started: Queue.Queue<void>; readonly release: Latch.Latch } | undefined
+      const wait = (count: number): Effect.Effect<void> =>
+        Effect.suspend(() =>
+          requests.length >= count ? Effect.void : Deferred.await(started).pipe(Effect.andThen(wait(count))),
+        )
 
-    const stream: ClientInterface["stream"] = (request) =>
-      Stream.suspend(() => {
-        const count = requests.push(options.transformRequest?.(request) ?? request)
+      const stream = ((request: LLMRequest) => {
+        requests.push(options.transformRequest?.(request) ?? request)
         const waiting = started
         started = Deferred.makeUnsafe()
+        Deferred.doneUnsafe(waiting, Effect.void)
+        const response = responses.shift() ?? fallback
+        if (!response) return Stream.die(new Error(`TestLLM has no response for request ${requests.length}`))
+        const streamed = toStream(response)
         const gate = activeGate
-        try {
-          const response = responses.shift() ?? (typeof fallback === "function" ? fallback(request) : fallback)
-          if (!response) return Stream.die(new Error(`TestLLM has no response for request ${count}`))
-          const streamed = toStream(response)
-          if (!gate) return streamed
-          return Stream.unwrap(
-            Queue.offer(gate.started, undefined).pipe(Effect.andThen(gate.release.await), Effect.as(streamed)),
-          )
-        } finally {
-          // Waiters can resume synchronously; assign the reply and gate before notifying them.
-          Deferred.doneUnsafe(waiting, Effect.void)
-        }
+        if (!gate) return streamed
+        return Stream.unwrap(
+          Queue.offer(gate.started, undefined).pipe(Effect.andThen(gate.release.await), Effect.as(streamed)),
+        )
+      }) as LLMClientShape["stream"]
+      const client = LLMClient.Service.of({
+        stream,
+        generate: (request) =>
+          stream(request).pipe(
+            Stream.runFold(LLMResponse.empty, LLMResponse.reduce),
+            Effect.flatMap((state) => {
+              const response = LLMResponse.complete(state)
+              if (response) return Effect.succeed(response)
+              return Effect.die("TestLLM response ended without a terminal finish event")
+            }),
+          ),
       })
-    const test = Test.of({
-      stream,
-      generate: (request) =>
-        stream(request).pipe(
-          Stream.runFold(LLMResponse.empty, LLMResponse.reduce),
-          Effect.flatMap((state) => {
-            const response = LLMResponse.complete(state)
-            if (response) return Effect.succeed(response)
-            return Effect.die("TestLLM response ended without a terminal finish event")
+
+      return Service.of({
+        requests,
+        push: (...input) =>
+          Effect.sync(() => {
+            responses.push(...input)
           }),
-        ),
-      requests: () => Effect.sync(() => [...requests]),
-      push: (...input) =>
-        Effect.sync(() => {
-          responses.push(...input)
-        }),
-      always: (response) =>
-        Effect.sync(() => {
-          fallback = response
-        }),
-      serve: (responder) =>
-        Effect.sync(() => {
-          fallback = responder
-        }),
-      wait,
-      gate: () =>
-        Effect.gen(function* () {
+        always: (response) =>
+          Effect.sync(() => {
+            fallback = response
+          }),
+        wait,
+        gate: Effect.gen(function* () {
           const gate = {
             started: yield* Effect.acquireRelease(Queue.unbounded<void>(), Queue.shutdown),
             release: yield* Latch.make(),
@@ -173,36 +147,11 @@ const make = (options: LayerOptions) =>
             release,
           }
         }),
-    })
-
-    return { test, requests }
-  })
-
-/** Provides one shared implementation under the normal client and test-control tags. */
-export const testLayer = (options: LayerOptions = {}) =>
-  Layer.effectContext(
-    Effect.map(make(options), (implementation) =>
-      Context.make(LLMClient.Service, implementation.test).pipe(Context.add(Test, implementation.test)),
-    ),
+        client,
+      })
+    }),
   )
 
-/** @deprecated Use testLayer; retained for published callers of the legacy control interface. */
-export const layer = (options: LayerOptions = {}) =>
-  Layer.effect(
-    Service,
-    Effect.map(make(options), (implementation) =>
-      Service.of({
-        requests: implementation.requests,
-        push: implementation.test.push,
-        always: implementation.test.always,
-        wait: implementation.test.wait,
-        gate: implementation.test.gate(),
-        client: implementation.test,
-      }),
-    ),
-  )
-
-/** @deprecated testLayer provides LLMClient.Service directly. */
 export const clientLayer = Layer.effect(
   LLMClient.Service,
   Effect.map(Service, (service) => service.client),

packages/ai/test/executor.test.ts

@@ -574,7 +574,6 @@ describe("WebSocket channel execution", () => {
   const model = configure({ baseURL: "https://api.openai.test/v1/", apiKey: "test" }).responses("gpt-4.1-mini")
   const request = LLM.request({ model, prompt: "Say hello." })
   const frames = [
-    JSON.stringify({ type: "response.output_item.added", item: { type: "message", id: "msg_1" } }),
     JSON.stringify({ type: "response.output_text.delta", item_id: "msg_1", delta: "Hi" }),
     JSON.stringify({ type: "response.completed", response: { id: "resp_1" } }),
   ]

packages/ai/test/exports.test.ts

@@ -32,8 +32,6 @@ describe("public exports", () => {
     expect(Provider.make).toBeFunction()
     expect(ProviderSubpath.make).toBe(Provider.make)
     expect(TestLLM.layer).toBeFunction()
-    expect(TestLLM.testLayer).toBeFunction()
-    expect(TestLLM.Test.of).toBeFunction()
   })
 
   test("route barrel exposes route-authoring APIs", () => {

packages/ai/test/fixtures/recordings/anthropic-messages-cache/keeps-a-long-tool-turn-inside-the-cache-lookback.json

@@ -10,7 +10,7 @@
       "transport": "http",
       "request": {
         "method": "POST",
-        "url": "https://api.anthropic.com/v1/messages?beta=true",
+        "url": "https://api.anthropic.com/v1/messages",
         "headers": {
           "anthropic-version": "2023-06-01",
           "content-type": "application/json"
@@ -29,7 +29,7 @@
       "transport": "http",
       "request": {
         "method": "POST",
-        "url": "https://api.anthropic.com/v1/messages?beta=true",
+        "url": "https://api.anthropic.com/v1/messages",
         "headers": {
           "anthropic-version": "2023-06-01",
           "content-type": "application/json"

packages/ai/test/fixtures/recordings/anthropic-messages-cache/writes-then-reads-cache-control-on-identical-second-call.json

@@ -10,7 +10,7 @@
       "transport": "http",
       "request": {
         "method": "POST",
-        "url": "https://api.anthropic.com/v1/messages?beta=true",
+        "url": "https://api.anthropic.com/v1/messages",
         "headers": {
           "anthropic-version": "2023-06-01",
           "content-type": "application/json"
@@ -29,7 +29,7 @@
       "transport": "http",
       "request": {
         "method": "POST",
-        "url": "https://api.anthropic.com/v1/messages?beta=true",
+        "url": "https://api.anthropic.com/v1/messages",
         "headers": {
           "anthropic-version": "2023-06-01",
           "content-type": "application/json"

packages/ai/test/fixtures/recordings/anthropic-messages/anthropic-opus-4-7-image-tool-result.json

@@ -24,7 +24,7 @@
       "transport": "http",
       "request": {
         "method": "POST",
-        "url": "https://api.anthropic.com/v1/messages?beta=true",
+        "url": "https://api.anthropic.com/v1/messages",
         "headers": {
           "anthropic-version": "2023-06-01",
           "content-type": "application/json"

packages/ai/test/fixtures/recordings/openrouter-reasoning-tool-loop.json

@@ -23,7 +23,7 @@
         "headers": {
           "content-type": "application/json"
         },
-        "body": "{\"model\":\"anthropic/claude-sonnet-4.6\",\"messages\":[{\"role\":\"system\",\"content\":\"Use the get_weather tool exactly once. After the tool result, reply exactly: Paris is sunny.\"},{\"role\":\"user\",\"content\":\"What is the weather in Paris?\"}],\"tools\":[{\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"description\":\"Get current weather for a city.\",\"parameters\":{\"type\":\"object\",\"properties\":{\"city\":{\"type\":\"string\"}},\"required\":[\"city\"],\"additionalProperties\":false},\"strict\":false}}],\"stream\":true,\"stream_options\":{\"include_usage\":true},\"reasoning\":{\"max_tokens\":1024},\"max_completion_tokens\":1536,\"store\":false,\"usage\":{\"include\":true}}"
+        "body": "{\"model\":\"anthropic/claude-sonnet-4.6\",\"messages\":[{\"role\":\"system\",\"content\":\"Use the get_weather tool exactly once. After the tool result, reply exactly: Paris is sunny.\"},{\"role\":\"user\",\"content\":\"What is the weather in Paris?\"}],\"tools\":[{\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"description\":\"Get current weather for a city.\",\"parameters\":{\"type\":\"object\",\"properties\":{\"city\":{\"type\":\"string\"}},\"required\":[\"city\"],\"additionalProperties\":false}}}],\"stream\":true,\"stream_options\":{\"include_usage\":true},\"max_tokens\":1536,\"reasoning\":{\"max_tokens\":1024}}"
       },
       "response": {
         "status": 200,
@@ -41,7 +41,7 @@
         "headers": {
           "content-type": "application/json"
         },
-        "body": "{\"model\":\"anthropic/claude-sonnet-4.6\",\"messages\":[{\"role\":\"system\",\"content\":\"Use the get_weather tool exactly once. After the tool result, reply exactly: Paris is sunny.\"},{\"role\":\"user\",\"content\":\"What is the weather in Paris?\"},{\"role\":\"assistant\",\"content\":\"Sure! Let me check the weather in Paris for you right now!\",\"tool_calls\":[{\"id\":\"toolu_01PaChhcyw3yu2P2bDS2bgAA\",\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"arguments\":\"{\\\"city\\\":\\\"Paris\\\"}\"}}],\"reasoning\":\"The user wants to know the weather in Paris. I'll use the get_weather tool.\",\"reasoning_details\":[{\"type\":\"reasoning.text\",\"text\":\"The user wants to know the weather in Paris. I'll use the get_weather tool.\",\"format\":\"anthropic-claude-v1\",\"index\":0,\"signature\":\"ErkCCosBCA8YAipAjKnRKpxkZ4eHrMPJ63IWEOYPSzb+XSHyG+vLK+2ks2O9T4N9M37Xn2kausQSH1rfsrdmKxgUlBg6yUFRgMVR7DIRY2xhdWRlLXNvbm5ldC00LTY4AEIIdGhpbmtpbmdaJDRjMGYwNDZmLTI1ZmQtNDVmYi1iZmIzLWEwOGE4ZTI0OWNhNxIMNFb5O6pb4nX0HojdGgyL5h+CAIpsxpdM1QgiMGm/i3ST6F5mAhxB+Uez0Cm95ra9yvQkrzHaA/AmWoXpdmPlczSn1S1RDk2IqeA57Spbf7JT44jygtLQt6yZmGzoTBHn3VkwaNZsuuAtbdo4B5QJXooa/AoKKs54QZ2kfS640vsv5flQVCg7CoQCFuLKjIeLMO7MnxVyuskXJr1DgesTa7I0ScF53U9JGhgB\"}]},{\"role\":\"tool\",\"tool_call_id\":\"toolu_01PaChhcyw3yu2P2bDS2bgAA\",\"content\":\"{\\\"temperature\\\":22,\\\"condition\\\":\\\"sunny\\\"}\"}],\"tools\":[{\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"description\":\"Get current weather for a city.\",\"parameters\":{\"type\":\"object\",\"properties\":{\"city\":{\"type\":\"string\"}},\"required\":[\"city\"],\"additionalProperties\":false},\"strict\":false}}],\"stream\":true,\"stream_options\":{\"include_usage\":true},\"reasoning\":{\"max_tokens\":1024},\"max_completion_tokens\":1536,\"store\":false,\"usage\":{\"include\":true}}"
+        "body": "{\"model\":\"anthropic/claude-sonnet-4.6\",\"messages\":[{\"role\":\"system\",\"content\":\"Use the get_weather tool exactly once. After the tool result, reply exactly: Paris is sunny.\"},{\"role\":\"user\",\"content\":\"What is the weather in Paris?\"},{\"role\":\"assistant\",\"content\":\"Sure! Let me check the weather in Paris for you right now!\",\"tool_calls\":[{\"id\":\"toolu_01PaChhcyw3yu2P2bDS2bgAA\",\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"arguments\":\"{\\\"city\\\":\\\"Paris\\\"}\"}}],\"reasoning\":\"The user wants to know the weather in Paris. I'll use the get_weather tool.\",\"reasoning_details\":[{\"type\":\"reasoning.text\",\"text\":\"The user wants to know the weather in Paris. I'll use the get_weather tool.\",\"format\":\"anthropic-claude-v1\",\"index\":0,\"signature\":\"ErkCCosBCA8YAipAjKnRKpxkZ4eHrMPJ63IWEOYPSzb+XSHyG+vLK+2ks2O9T4N9M37Xn2kausQSH1rfsrdmKxgUlBg6yUFRgMVR7DIRY2xhdWRlLXNvbm5ldC00LTY4AEIIdGhpbmtpbmdaJDRjMGYwNDZmLTI1ZmQtNDVmYi1iZmIzLWEwOGE4ZTI0OWNhNxIMNFb5O6pb4nX0HojdGgyL5h+CAIpsxpdM1QgiMGm/i3ST6F5mAhxB+Uez0Cm95ra9yvQkrzHaA/AmWoXpdmPlczSn1S1RDk2IqeA57Spbf7JT44jygtLQt6yZmGzoTBHn3VkwaNZsuuAtbdo4B5QJXooa/AoKKs54QZ2kfS640vsv5flQVCg7CoQCFuLKjIeLMO7MnxVyuskXJr1DgesTa7I0ScF53U9JGhgB\"}]},{\"role\":\"tool\",\"tool_call_id\":\"toolu_01PaChhcyw3yu2P2bDS2bgAA\",\"content\":\"{\\\"temperature\\\":22,\\\"condition\\\":\\\"sunny\\\"}\"}],\"tools\":[{\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"description\":\"Get current weather for a city.\",\"parameters\":{\"type\":\"object\",\"properties\":{\"city\":{\"type\":\"string\"}},\"required\":[\"city\"],\"additionalProperties\":false}}}],\"stream\":true,\"stream_options\":{\"include_usage\":true},\"max_tokens\":1536,\"reasoning\":{\"max_tokens\":1024}}"
       },
       "response": {
         "status": 200,

packages/ai/test/fixtures/recordings/openrouter-reasoning.json

@@ -15,7 +15,7 @@
         "headers": {
           "content-type": "application/json"
         },
-        "body": "{\"model\":\"anthropic/claude-sonnet-4.6\",\"messages\":[{\"role\":\"system\",\"content\":\"Think through the arithmetic, then reply with only the final integer.\"},{\"role\":\"user\",\"content\":\"What is 173 multiplied by 219?\"}],\"stream\":true,\"stream_options\":{\"include_usage\":true},\"temperature\":0,\"reasoning\":{\"max_tokens\":1024},\"max_completion_tokens\":1536,\"store\":false,\"usage\":{\"include\":true}}"
+        "body": "{\"model\":\"anthropic/claude-sonnet-4.6\",\"messages\":[{\"role\":\"system\",\"content\":\"Think through the arithmetic, then reply with only the final integer.\"},{\"role\":\"user\",\"content\":\"What is 173 multiplied by 219?\"}],\"stream\":true,\"stream_options\":{\"include_usage\":true},\"max_tokens\":1536,\"temperature\":0,\"reasoning\":{\"max_tokens\":1024}}"
       },
       "response": {
         "status": 200,

packages/ai/test/fixtures/recordings/pdf/anthropic-tool-result.json

@@ -10,11 +10,11 @@
       "transport": "http",
       "request": {
         "method": "POST",
-        "url": "https://api.anthropic.com/v1/messages?beta=true",
+        "url": "https://api.anthropic.com/v1/messages",
         "headers": {
           "content-type": "application/json"
         },
-        "body": "{\"model\":\"claude-haiku-4-5-20251001\",\"system\":[{\"type\":\"text\",\"text\":\"Read the PDF returned by the tool and follow the user's response format exactly.\"}],\"messages\":[{\"role\":\"user\",\"content\":[{\"type\":\"text\",\"text\":\"Return only the verification code from the PDF.\"}]},{\"role\":\"assistant\",\"content\":[{\"type\":\"tool_use\",\"id\":\"call_pdf_1\",\"name\":\"read_pdf\",\"input\":{}}]},{\"role\":\"user\",\"content\":[{\"type\":\"tool_result\",\"tool_use_id\":\"call_pdf_1\",\"content\":[{\"type\":\"text\",\"text\":\"PDF read successfully\"},{\"type\":\"document\",\"source\":{\"type\":\"base64\",\"media_type\":\"application/pdf\",\"data\":\"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\"},\"title\":\"verification.pdf\"}]}]}],\"tools\":[{\"name\":\"read_pdf\",\"description\":\"Read the attached PDF.\",\"input_schema\":{\"type\":\"object\",\"properties\":{},\"additionalProperties\":false}}],\"stream\":true,\"max_tokens\":40,\"temperature\":0}"
+        "body": "{\"model\":\"claude-haiku-4-5-20251001\",\"system\":[{\"type\":\"text\",\"text\":\"Read the PDF returned by the tool and follow the user's response format exactly.\"}],\"messages\":[{\"role\":\"user\",\"content\":[{\"type\":\"text\",\"text\":\"Return only the verification code from the PDF.\"}]},{\"role\":\"assistant\",\"content\":[{\"type\":\"tool_use\",\"id\":\"call_pdf_1\",\"name\":\"read_pdf\",\"input\":{}}]},{\"role\":\"user\",\"content\":[{\"type\":\"tool_result\",\"tool_use_id\":\"call_pdf_1\",\"content\":[{\"type\":\"text\",\"text\":\"PDF read successfully\"},{\"type\":\"document\",\"source\":{\"type\":\"base64\",\"media_type\":\"application/pdf\",\"data\":\"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\"}}]}]}],\"tools\":[{\"name\":\"read_pdf\",\"description\":\"Read the attached PDF.\",\"input_schema\":{\"type\":\"object\",\"properties\":{},\"additionalProperties\":false}}],\"stream\":true,\"max_tokens\":40,\"temperature\":0}"
       },
       "response": {
         "status": 200,

packages/ai/test/fixtures/recordings/pdf/anthropic-user-input.json

@@ -10,11 +10,11 @@
       "transport": "http",
       "request": {
         "method": "POST",
-        "url": "https://api.anthropic.com/v1/messages?beta=true",
+        "url": "https://api.anthropic.com/v1/messages",
         "headers": {
           "content-type": "application/json"
         },
-        "body": "{\"model\":\"claude-haiku-4-5-20251001\",\"messages\":[{\"role\":\"user\",\"content\":[{\"type\":\"document\",\"source\":{\"type\":\"base64\",\"media_type\":\"application/pdf\",\"data\":\"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\"},\"title\":\"verification.pdf\"},{\"type\":\"text\",\"text\":\"Return only the verification code from the PDF.\"}]}],\"stream\":true,\"max_tokens\":40,\"temperature\":0}"
+        "body": "{\"model\":\"claude-haiku-4-5-20251001\",\"messages\":[{\"role\":\"user\",\"content\":[{\"type\":\"document\",\"source\":{\"type\":\"base64\",\"media_type\":\"application/pdf\",\"data\":\"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\"}},{\"type\":\"text\",\"text\":\"Return only the verification code from the PDF.\"}]}],\"stream\":true,\"max_tokens\":40,\"temperature\":0}"
       },
       "response": {
         "status": 200,

packages/ai/test/provider-error.test.ts

@@ -11,7 +11,6 @@ describe("provider error classification", () => {
       "Input length 131393 exceeds the maximum allowed input length of 131040 tokens.",
       "The input (516368 tokens) is longer than the model's context length (262144 tokens).",
       "Prompt has 5,958,968 tokens, but the configured context size is 256,000 tokens",
-      "Range of input length should be [1, 129024]",
       "Too many tokens",
       "Token limit exceeded",
     ]
@@ -88,12 +87,10 @@ describe("provider error classification", () => {
     ])
   })
 
-  test("classifies any remaining 4xx status as an invalid request", () => {
+  test("classifies network error text as provider internal", () => {
     expect(
-      [400, 402, 404, 418, 422, 451].map(
-        (status) => classifyProviderFailure({ message: `HTTP ${status}`, status })._tag,
-      ),
-    ).toEqual(Array(6).fill("InvalidRequest"))
+      ["network error", "network-error", "network_error"].map((message) => classifyProviderFailure({ message })._tag),
+    ).toEqual(["ProviderInternal", "ProviderInternal", "ProviderInternal"])
   })
 
   test("classifies nested provider codes when a top-level code is also present", () => {
@@ -106,12 +103,10 @@ describe("provider error classification", () => {
     ).toEqual(["QuotaExceeded", "ProviderInternal", "InvalidRequest"])
   })
 
-  test("leaves unrecognized failures unclassified for the retry default", () => {
+  test("keeps unknown and malformed provider payloads non-retryable", () => {
     expect(classifyProviderFailure({ message: '{"error":{"message":"no_kv_space"}}' })._tag).toBe("UnknownProvider")
     expect(classifyProviderFailure({ message: '{"type":"error","error":{"code":123}}' })._tag).toBe("UnknownProvider")
     expect(classifyProviderFailure({ message: "not-json" })._tag).toBe("UnknownProvider")
-    expect(classifyProviderFailure({ message: "network error" })._tag).toBe("UnknownProvider")
-    expect(classifyProviderFailure({ message: "Provider returned error" })._tag).toBe("UnknownProvider")
   })
 })
 

packages/ai/test/provider-package.test.ts

@@ -1,7 +1,5 @@
 import { describe, expect, test } from "bun:test"
 import { model } from "@opencode-ai/ai/providers/openai"
-import { LLM } from "../src/index.js"
-import { Endpoint } from "../src/route/endpoint.js"
 
 describe("provider package entrypoints", () => {
   test("semantic API aliases expose the same contract", async () => {
@@ -38,8 +36,7 @@ describe("provider package entrypoints", () => {
     expect(modules[0].model).toBe(modules[1].model)
     expect(modules[8].model).toBe(modules[9].model)
     expect(modules[12].model).toBe(modules[13].model)
-    expect(modules[19].model).toBe(modules[21].model)
-    expect(modules[19].model).not.toBe(modules[20].model)
+    expect(modules[19].model).toBe(modules[20].model)
   })
 
   test("maps DeepInfra package settings onto its native executable model", async () => {
@@ -142,10 +139,8 @@ describe("provider package entrypoints", () => {
     expect(selected.route.id).toBe("anthropic-messages")
     expect(selected.route.endpoint).toMatchObject({
       baseURL: "https://messages.example.test/v1",
+      path: "/messages",
     })
-    expect(
-      Endpoint.render(selected.route.endpoint, { request: LLM.request({ model: selected }), body: {} }).toString(),
-    ).toBe("https://messages.example.test/v1/messages")
     expect(selected.route.defaults.headers).toEqual({ "x-application": "opencode" })
     expect(selected.route.defaults.http?.body).toEqual({ metadata: { user_id: "user_1" } })
     expect(selected.route.defaults.providerOptions).toEqual({ effort: "low" })

packages/ai/test/provider/bedrock-converse.test.ts

@@ -491,59 +491,6 @@ describe("Bedrock Converse route", () => {
     }),
   )
 
-  it.effect("ignores late tool deltas after contentBlockStop", () =>
-    Effect.gen(function* () {
-      const body = eventStreamBody(
-        [
-          "contentBlockStart",
-          {
-            contentBlockIndex: 0,
-            start: { toolUse: { toolUseId: "tool_1", name: "lookup" } },
-          },
-        ],
-        ["contentBlockDelta", { contentBlockIndex: 0, delta: { toolUse: { input: '{"query":"weather"}' } } }],
-        ["contentBlockStop", { contentBlockIndex: 0 }],
-        ["contentBlockDelta", { contentBlockIndex: 0, delta: { toolUse: { input: '{"late":true}' } } }],
-        ["messageStop", { stopReason: "tool_use" }],
-      )
-      const response = yield* LLMClient.generate(baseRequest).pipe(Effect.provide(fixedBytes(body)))
-
-      expect(response.toolCalls).toEqual([
-        { type: "tool-call", id: "tool_1", name: "lookup", input: { query: "weather" } },
-      ])
-      expect(response.events.filter((event) => event.type === "tool-input-delta")).toEqual([
-        {
-          type: "tool-input-delta",
-          id: "tool_1",
-          name: "lookup",
-          text: '{"query":"weather"}',
-          input: { query: "weather" },
-        },
-      ])
-    }),
-  )
-
-  it.effect("rejects tool deltas without contentBlockStart", () =>
-    Effect.gen(function* () {
-      const error = yield* LLMClient.generate(baseRequest).pipe(
-        Effect.provide(
-          fixedBytes(
-            eventStreamBody(
-              ["contentBlockDelta", { contentBlockIndex: 0, delta: { toolUse: { input: "{}" } } }],
-              ["messageStop", { stopReason: "tool_use" }],
-            ),
-          ),
-        ),
-        Effect.flip,
-      )
-
-      expect(error).toMatchObject({
-        reason: { _tag: "InvalidProviderOutput" },
-        message: "Bedrock Converse tool delta is missing its tool call",
-      })
-    }),
-  )
-
   it.effect("recovers incomplete tool input at finalization", () =>
     Effect.gen(function* () {
       const body = eventStreamBody(

packages/ai/test/provider/error-retention.test.ts

@@ -52,7 +52,7 @@ describe("provider error retention", () => {
           Effect.flip,
         )
         expect(error.message).toContain("Slow down")
-        expect(error.reason._tag).toBe("RateLimit")
+        expect(error.reason._tag).toBe(entry.name === "Gemini" ? "ProviderInternal" : "RateLimit")
         expect(error.reason.body).toBe(body)
         expect(error.reason.http).toMatchObject({ status: 200, headers: { "x-provider-trace": "trace-1" } })
         expect(error.reason.http?.url).toStartWith("https://provider.test/")

packages/ai/test/provider/open-responses-lifecycle.test.ts

@@ -1,467 +0,0 @@
-import { describe, expect } from "bun:test"
-import { Effect, Stream } from "effect"
-import { LLM, LLMEvent } from "../../src/index.js"
-import { OpenResponses } from "../../src/protocols/open-responses.js"
-import { configure } from "../../src/providers/openai-compatible-responses.js"
-import { LLMClient } from "../../src/route.js"
-import { it } from "../lib/effect.js"
-import { fixedResponse } from "../lib/http.js"
-import { sseEvents } from "../lib/sse.js"
-
-const request = LLM.request({
-  model: configure({ apiKey: "test-key", baseURL: "https://responses.example.test/v1" }).model("example-model"),
-  prompt: "Respond.",
-})
-const completed = { type: "response.completed", response: { id: "resp_1" } }
-
-const collect = (...input: OpenResponses.Event[]) =>
-  Effect.gen(function* () {
-    const events = yield* LLMClient.stream(request).pipe(
-      Stream.runCollect,
-      Effect.provide(fixedResponse(sseEvents(...input))),
-    )
-    expectLifecycle(
-      events,
-      input.some((event) => event.type === "response.completed"),
-    )
-    return events
-  })
-
-// Deliberately local to these basic-item fixtures, not a general stream validator.
-function expectLifecycle(events: ReadonlyArray<LLMEvent>, completed: boolean) {
-  const active = { text: new Set<string>(), reasoning: new Set<string>() }
-  const tools = new Map<string, "started" | "ended" | "called">()
-  events.forEach((event) => {
-    if (event.type === "text-start" || event.type === "reasoning-start") {
-      const blocks = event.type === "text-start" ? active.text : active.reasoning
-      expect(blocks.size).toBe(0)
-      blocks.add(event.id)
-    }
-    if (event.type === "text-delta" || event.type === "reasoning-delta") {
-      expect((event.type === "text-delta" ? active.text : active.reasoning).has(event.id)).toBe(true)
-    }
-    if (event.type === "text-end" || event.type === "reasoning-end") {
-      expect((event.type === "text-end" ? active.text : active.reasoning).delete(event.id)).toBe(true)
-    }
-    if (event.type === "tool-input-start") {
-      expect(tools.has(event.id)).toBe(false)
-      tools.set(event.id, "started")
-    }
-    if (event.type === "tool-input-delta") expect(tools.get(event.id)).toBe("started")
-    if (event.type === "tool-input-end") {
-      expect(tools.get(event.id)).toBe("started")
-      tools.set(event.id, "ended")
-    }
-    if (event.type === "tool-call") {
-      expect(tools.get(event.id)).toBe("ended")
-      tools.set(event.id, "called")
-    }
-    // Incomplete responses may leave pending tool inputs without a call.
-    if (event.type === "finish" && completed) {
-      expect(active.text.size).toBe(0)
-      expect(active.reasoning.size).toBe(0)
-      expect([...tools.values()].every((status) => status === "called")).toBe(true)
-    }
-  })
-  expect(events.filter(LLMEvent.is.stepStart)).toHaveLength(1)
-  expect(events[0]?.type).toBe("step-start")
-  expect(events.filter(LLMEvent.is.stepFinish)).toHaveLength(1)
-  expect(events.filter(LLMEvent.is.finish)).toHaveLength(1)
-  expect(events.slice(-2).map((event) => event.type)).toEqual(["step-finish", "finish"])
-}
-
-describe("Open Responses basic-item lifecycles", () => {
-  it.effect("closes implicit summary boundaries and ignores late events for completed reasoning", () =>
-    Effect.gen(function* () {
-      const item = { type: "reasoning", id: "rs_1", encrypted_content: "encrypted-state" }
-      const events = yield* collect(
-        { type: "response.output_item.added", output_index: 0, item: { ...item, encrypted_content: null } },
-        { type: "response.output_item.added", item: { ...item, encrypted_content: null } },
-        { type: "response.reasoning_summary_text.delta", item_id: "rs_1", summary_index: 0, delta: "First" },
-        { type: "response.reasoning_summary_part.added", item_id: "rs_1", summary_index: 1 },
-        { type: "response.reasoning_summary_part.done", item_id: "rs_1", summary_index: 0 },
-        { type: "response.reasoning_summary_text.done", item_id: "rs_1", summary_index: 1, text: "Second" },
-        // The third part omits both explicit summary boundaries.
-        {
-          type: "response.reasoning_summary_text.delta",
-          output_index: 0,
-          item_id: "wrong",
-          summary_index: 2,
-          delta: "Third",
-        },
-        { type: "response.output_item.done", item },
-        { type: "response.output_item.done", item },
-        { type: "response.output_item.added", item },
-        { type: "response.reasoning_summary_part.added", item_id: "rs_1", summary_index: 3 },
-        { type: "response.reasoning_summary_text.delta", item_id: "rs_1", summary_index: 3, delta: "late" },
-        { type: "response.reasoning_summary_text.done", item_id: "rs_1", summary_index: 2, text: "late final" },
-        { type: "response.reasoning_summary_part.done", item_id: "rs_1", summary_index: 3 },
-        completed,
-      )
-
-      expect(events.filter((event) => event.type.startsWith("reasoning-"))).toEqual([
-        {
-          type: "reasoning-start",
-          id: "rs_1:0",
-          providerMetadata: { "openai-compatible": { itemId: "rs_1", reasoningEncryptedContent: null } },
-        },
-        { type: "reasoning-delta", id: "rs_1:0", text: "First" },
-        { type: "reasoning-end", id: "rs_1:0", providerMetadata: { "openai-compatible": { itemId: "rs_1" } } },
-        {
-          type: "reasoning-start",
-          id: "rs_1:1",
-          providerMetadata: { "openai-compatible": { itemId: "rs_1", reasoningEncryptedContent: null } },
-        },
-        { type: "reasoning-delta", id: "rs_1:1", text: "Second" },
-        { type: "reasoning-end", id: "rs_1:1", providerMetadata: { "openai-compatible": { itemId: "rs_1" } } },
-        {
-          type: "reasoning-start",
-          id: "rs_1:2",
-          providerMetadata: { "openai-compatible": { itemId: "rs_1", reasoningEncryptedContent: null } },
-        },
-        { type: "reasoning-delta", id: "rs_1:2", text: "Third" },
-        {
-          type: "reasoning-end",
-          id: "rs_1:2",
-          providerMetadata: { "openai-compatible": { itemId: "rs_1", reasoningEncryptedContent: "encrypted-state" } },
-        },
-      ])
-    }),
-  )
-
-  it.effect("preserves done-only encrypted reasoning without replaying its summary or late events", () =>
-    Effect.gen(function* () {
-      const item = {
-        type: "reasoning",
-        id: "rs_1",
-        encrypted_content: "encrypted-state",
-        summary: [{ type: "summary_text", text: "Not streamed" }],
-      }
-      const events = yield* collect(
-        { type: "response.output_item.done", item },
-        { type: "response.output_item.done", item },
-        { type: "response.output_item.added", item },
-        { type: "response.reasoning_summary_text.delta", item_id: "rs_1", delta: "late" },
-        { type: "response.reasoning_summary_part.added", item_id: "rs_1", summary_index: 1 },
-        { type: "response.reasoning_summary_text.done", item_id: "rs_1", summary_index: 1, text: "late final" },
-        completed,
-        // Route termination must also prevent events after response completion.
-        { type: "response.output_item.added", item: { type: "reasoning", id: "rs_after" } },
-      )
-      expect(events.filter((event) => event.type.startsWith("reasoning-"))).toEqual([
-        {
-          type: "reasoning-start",
-          id: "rs_1",
-          providerMetadata: { "openai-compatible": { itemId: "rs_1", reasoningEncryptedContent: "encrypted-state" } },
-        },
-        {
-          type: "reasoning-end",
-          id: "rs_1",
-          providerMetadata: { "openai-compatible": { itemId: "rs_1", reasoningEncryptedContent: "encrypted-state" } },
-        },
-      ])
-    }),
-  )
-
-  it.effect("forgets never-streamed messages at implicit boundaries and preserves refusal phases", () =>
-    Effect.gen(function* () {
-      const events = yield* collect(
-        { type: "response.output_item.added", item: { type: "message", id: "msg_empty" } },
-        { type: "response.output_item.added", item: { type: "message", id: "msg_1", phase: "commentary" } },
-        { type: "response.output_text.done", item_id: "msg_1", text: "Checking" },
-        { type: "response.output_text.done", item_id: "msg_1", text: "Duplicate" },
-        { type: "response.output_item.added", item: { type: "message", id: "msg_2", phase: null } },
-        { type: "response.output_text.delta", item_id: "msg_empty", delta: "stale" },
-        { type: "response.output_text.done", item_id: "msg_empty", text: "stale final" },
-        { type: "response.output_text.delta", item_id: "msg_1", delta: "late" },
-        { type: "response.refusal.delta", item_id: "msg_2", delta: "Cannot help." },
-        { type: "response.refusal.done", item_id: "msg_2", refusal: "Cannot help." },
-        { type: "response.output_item.done", item: { type: "message", id: "msg_2", phase: "final_answer" } },
-        { type: "response.output_item.added", item: { type: "message", id: "msg_3", phase: null } },
-        { type: "response.refusal.done", item_id: "msg_3", refusal: "Done-only refusal." },
-        { type: "response.output_item.done", item: { type: "message", id: "msg_3" } },
-        completed,
-      )
-      expect(events.filter((event) => event.type.startsWith("text-"))).toEqual([
-        {
-          type: "text-start",
-          id: "msg_1",
-          providerMetadata: { "openai-compatible": { itemId: "msg_1", phase: "commentary" } },
-        },
-        { type: "text-delta", id: "msg_1", text: "Checking" },
-        {
-          type: "text-end",
-          id: "msg_1",
-          providerMetadata: { "openai-compatible": { itemId: "msg_1", phase: "commentary" } },
-        },
-        {
-          type: "text-start",
-          id: "msg_2",
-          providerMetadata: { "openai-compatible": { itemId: "msg_2", phase: null } },
-        },
-        { type: "text-delta", id: "msg_2", text: "Cannot help." },
-        {
-          type: "text-end",
-          id: "msg_2",
-          providerMetadata: { "openai-compatible": { itemId: "msg_2", phase: "final_answer" } },
-        },
-        {
-          type: "text-start",
-          id: "msg_3",
-          providerMetadata: { "openai-compatible": { itemId: "msg_3", phase: null } },
-        },
-        { type: "text-delta", id: "msg_3", text: "Done-only refusal." },
-        { type: "text-end", id: "msg_3", providerMetadata: { "openai-compatible": { itemId: "msg_3", phase: null } } },
-      ])
-    }),
-  )
-  it.effect("allows a message to be registered again without inheriting its previous phase", () =>
-    Effect.gen(function* () {
-      const events = yield* collect(
-        { type: "response.output_item.added", item: { type: "message", id: "msg_1", phase: "commentary" } },
-        { type: "response.output_text.delta", item_id: "msg_1", delta: "First" },
-        { type: "response.output_item.done", item: { type: "message", id: "msg_1" } },
-        { type: "response.output_item.added", item: { type: "message", id: "msg_1" } },
-        { type: "response.output_text.delta", item_id: "msg_1", delta: "Second" },
-        { type: "response.output_item.done", item: { type: "message", id: "msg_1" } },
-        completed,
-      )
-      expect(events.filter(LLMEvent.is.textEnd)).toEqual([
-        {
-          type: "text-end",
-          id: "msg_1",
-          providerMetadata: { "openai-compatible": { itemId: "msg_1", phase: "commentary" } },
-        },
-        { type: "text-end", id: "msg_1", providerMetadata: { "openai-compatible": { itemId: "msg_1" } } },
-      ])
-      expect(events.filter(LLMEvent.is.textDelta).map((event) => event.text)).toEqual(["First", "Second"])
-    }),
-  )
-  ;[undefined, "fc_1"].forEach((id) => {
-    it.effect(`opens and closes a done-only tool ${id === undefined ? "without" : "with"} an item id`, () =>
-      Effect.gen(function* () {
-        const item = {
-          type: "function_call",
-          ...(id === undefined ? {} : { id }),
-          call_id: "call_1",
-          name: "lookup",
-          arguments: '{"query":"weather"}',
-        }
-        const events = yield* collect(
-          { type: "response.output_item.done", item },
-          { type: "response.output_item.done", item: { ...item, id: "fc_1" } },
-          { type: "response.output_item.added", item },
-          completed,
-        )
-        const providerMetadata = id === undefined ? undefined : { "openai-compatible": { itemId: id } }
-        expect(events.filter((event) => event.type.startsWith("tool-"))).toEqual([
-          { type: "tool-input-start", id: "call_1", name: "lookup", providerMetadata },
-          { type: "tool-input-end", id: "call_1", name: "lookup", providerMetadata },
-          { type: "tool-call", id: "call_1", name: "lookup", input: { query: "weather" }, providerMetadata },
-        ])
-        expect(events.filter(LLMEvent.is.finish)).toEqual([
-          {
-            type: "finish",
-            reason: { normalized: "tool-calls", raw: undefined },
-            providerMetadata: { "openai-compatible": { responseId: "resp_1", serviceTier: undefined } },
-          },
-        ])
-      }),
-    )
-
-    it.effect(`deduplicates a pending call whose item id is ${id === undefined ? "introduced" : "omitted"} later`, () =>
-      Effect.gen(function* () {
-        const item = { type: "function_call", call_id: "call_1", name: "lookup" }
-        const first = { ...item, ...(id === undefined ? {} : { id }) }
-        const duplicate = { ...item, ...(id === undefined ? { id: "fc_1" } : {}) }
-        const events = yield* collect(
-          { type: "response.output_item.added", item: first },
-          { type: "response.function_call_arguments.delta", item_id: id ?? "call_1", delta: '{"query":"weather"}' },
-          { type: "response.output_item.added", item: duplicate },
-          { type: "response.output_item.done", item: duplicate },
-          { type: "response.output_item.done", item: first },
-          { type: "response.output_item.added", item: duplicate },
-          completed,
-        )
-        // Identity metadata comes from the first admission, not the duplicate.
-        const providerMetadata = id === undefined ? undefined : { "openai-compatible": { itemId: id } }
-        expect(events.filter((event) => event.type.startsWith("tool-"))).toEqual([
-          { type: "tool-input-start", id: "call_1", name: "lookup", providerMetadata },
-          {
-            type: "tool-input-delta",
-            id: "call_1",
-            name: "lookup",
-            text: '{"query":"weather"}',
-            input: { query: "weather" },
-          },
-          { type: "tool-input-end", id: "call_1", name: "lookup", providerMetadata },
-          { type: "tool-call", id: "call_1", name: "lookup", input: { query: "weather" }, providerMetadata },
-        ])
-      }),
-    )
-  })
-
-  it.effect("recovers pending items in completed output order with terminal encrypted metadata", () =>
-    Effect.gen(function* () {
-      const events = yield* collect(
-        {
-          type: "response.output_item.added",
-          item: { type: "function_call", id: "fc_1", call_id: "call_1", name: "lookup" },
-        },
-        { type: "response.function_call_arguments.delta", item_id: "fc_1", delta: '{"query":"draft"}' },
-        { type: "response.output_item.added", item: { type: "reasoning", id: "rs_1", encrypted_content: null } },
-        { type: "response.reasoning_summary_text.delta", item_id: "rs_1", delta: "Thinking" },
-        { type: "response.reasoning_summary_part.done", item_id: "rs_1", summary_index: 0 },
-        {
-          type: "response.completed",
-          response: {
-            id: "resp_1",
-            output: [
-              { type: "reasoning", id: "rs_1", encrypted_content: "terminal-state" },
-              { type: "function_call", id: "fc_1", call_id: "call_1", name: "lookup", arguments: '{"query":"final"}' },
-              { type: "function_call", id: "fc_unseen", call_id: "call_unseen", name: "lookup", arguments: "{}" },
-            ],
-          },
-        },
-      )
-      expect(events.slice(5, -2)).toEqual([
-        {
-          type: "reasoning-end",
-          id: "rs_1:0",
-          providerMetadata: { "openai-compatible": { itemId: "rs_1", reasoningEncryptedContent: "terminal-state" } },
-        },
-        {
-          type: "tool-input-end",
-          id: "call_1",
-          name: "lookup",
-          providerMetadata: { "openai-compatible": { itemId: "fc_1" } },
-        },
-        {
-          type: "tool-call",
-          id: "call_1",
-          name: "lookup",
-          input: { query: "final" },
-          providerMetadata: { "openai-compatible": { itemId: "fc_1" } },
-        },
-      ])
-    }),
-  )
-
-  it.effect("preserves call identity and pending order when an item id is reused", () =>
-    Effect.gen(function* () {
-      const first = { type: "function_call", id: "fc_1", call_id: "call_1", name: "lookup", arguments: "{}" }
-      const events = yield* collect(
-        { type: "response.output_item.added", item: first },
-        { type: "response.output_item.added", item: { ...first, id: "fc_2", call_id: "call_2" } },
-        { type: "response.output_item.done", item: first },
-        { type: "response.output_item.added", item: { ...first, call_id: "call_3" } },
-        { type: "response.output_item.done", item: first },
-        completed,
-      )
-      expect(events.filter(LLMEvent.is.toolCall).map((event) => event.id)).toEqual(["call_1", "call_2", "call_3"])
-    }),
-  )
-
-  it.effect("keeps text and reasoning identities separate even with empty item ids", () =>
-    Effect.gen(function* () {
-      const events = yield* collect(
-        { type: "response.output_item.added", item: { type: "reasoning", id: "" } },
-        { type: "response.output_item.added", item: { type: "message", id: "" } },
-        { type: "response.output_item.added", item: { type: "reasoning", id: "" } },
-        { type: "response.reasoning_summary_text.delta", item_id: "", delta: "Thinking" },
-        { type: "response.output_text.delta", item_id: "", delta: "Answer" },
-        { type: "response.output_item.done", item: { type: "reasoning", id: "", encrypted_content: "state" } },
-        { type: "response.output_item.done", item: { type: "message", id: "" } },
-        completed,
-      )
-      expect(events.filter(LLMEvent.is.reasoningDelta).map((event) => event.text)).toEqual(["Thinking"])
-      expect(events.filter(LLMEvent.is.textDelta).map((event) => event.text)).toEqual(["Answer"])
-      expect(events.filter(LLMEvent.is.reasoningEnd)).toEqual([
-        {
-          type: "reasoning-end",
-          id: ":0",
-          providerMetadata: { "openai-compatible": { itemId: "", reasoningEncryptedContent: "state" } },
-        },
-      ])
-    }),
-  )
-
-  it.effect("does not recover a completed tool from a tracked message with the same id", () =>
-    Effect.gen(function* () {
-      const events = yield* collect(
-        { type: "response.output_item.added", item: { type: "message", id: "item_1" } },
-        { type: "response.output_text.delta", item_id: "item_1", delta: "Answer" },
-        {
-          type: "response.completed",
-          response: {
-            id: "resp_1",
-            output: [{ type: "function_call", id: "item_1", call_id: "call_1", name: "lookup", arguments: "{}" }],
-          },
-        },
-      )
-      expect(events.filter(LLMEvent.is.toolCall)).toEqual([])
-      expect(events.filter(LLMEvent.is.finish).map((event) => event.reason.normalized)).toEqual(["stop"])
-    }),
-  )
-
-  it.effect("flushes pending calls and open text when completed output is absent", () =>
-    Effect.gen(function* () {
-      const events = yield* collect(
-        { type: "response.output_item.added", item: { type: "message", id: "msg_1", phase: "final_answer" } },
-        { type: "response.output_text.delta", item_id: "msg_1", delta: "Answer" },
-        {
-          type: "response.output_item.added",
-          item: { type: "function_call", call_id: "call_1", name: "lookup", arguments: "{}" },
-        },
-        completed,
-      )
-      // Generic terminal closure does not repeat the message's phase metadata.
-      expect(events.slice(4, -2)).toEqual([
-        { type: "tool-input-end", id: "call_1", name: "lookup" },
-        { type: "tool-call", id: "call_1", name: "lookup", input: {} },
-        { type: "text-end", id: "msg_1" },
-      ])
-    }),
-  )
-
-  it.effect("does not reconcile pending calls or terminal reasoning metadata on incomplete responses", () =>
-    Effect.gen(function* () {
-      const events = yield* collect(
-        { type: "response.output_item.added", item: { type: "reasoning", id: "rs_1", encrypted_content: null } },
-        { type: "response.reasoning_summary_text.delta", item_id: "rs_1", delta: "Partial" },
-        {
-          type: "response.output_item.added",
-          item: { type: "function_call", id: "fc_1", call_id: "call_1", name: "lookup" },
-        },
-        { type: "response.function_call_arguments.delta", item_id: "fc_1", delta: '{"query":' },
-        {
-          type: "response.incomplete",
-          response: {
-            id: "resp_1",
-            incomplete_details: { reason: "max_output_tokens" },
-            output: [
-              { type: "reasoning", id: "rs_1", encrypted_content: "not-reconciled" },
-              {
-                type: "function_call",
-                id: "fc_1",
-                call_id: "call_1",
-                name: "lookup",
-                arguments: '{"query":"not-reconciled"}',
-              },
-            ],
-          },
-        },
-      )
-      expect(events.filter(LLMEvent.is.toolInputEnd)).toEqual([])
-      expect(events.filter(LLMEvent.is.toolCall)).toEqual([])
-      expect(events.filter(LLMEvent.is.reasoningEnd)).toEqual([{ type: "reasoning-end", id: "rs_1:0" }])
-      expect(events.filter(LLMEvent.is.finish)).toEqual([
-        {
-          type: "finish",
-          reason: { normalized: "length", raw: "max_output_tokens" },
-          providerMetadata: { "openai-compatible": { responseId: "resp_1", serviceTier: undefined } },
-        },
-      ])
-    }),
-  )
-})

packages/ai/test/provider/openai-chat.test.ts

@@ -807,28 +807,6 @@ describe("OpenAI Chat route", () => {
     }),
   )
 
-  it.effect("finishes at the done sentinel without waiting for response EOF", () =>
-    Effect.gen(function* () {
-      const stream = new ReadableStream<Uint8Array>({
-        start(controller) {
-          controller.enqueue(
-            new TextEncoder().encode(sseEvents(deltaChunk({ content: "Hello" }), deltaChunk({}, "stop"))),
-          )
-        },
-      })
-      const response = yield* LLMClient.generate(request).pipe(
-        Effect.provide(
-          fixedResponse(stream, {
-            headers: { "content-type": "text/event-stream" },
-          }),
-        ),
-      )
-
-      expect(response.text).toBe("Hello")
-      expect(response.events.at(-1)?.type).toBe("finish")
-    }),
-  )
-
   it.effect("preserves streamed refusals as ordinary assistant text", () =>
     Effect.gen(function* () {
       const response = yield* LLMClient.generate(request).pipe(

packages/ai/test/provider/openai-compatible-chat.test.ts

@@ -405,19 +405,6 @@ describe("OpenAI-compatible Chat route", () => {
     }),
   )
 
-  it.effect("ignores events after the done sentinel", () =>
-    Effect.gen(function* () {
-      const body = `${sseEvents(
-        deltaChunk({ content: "Hello" }),
-        deltaChunk({}, "stop"),
-      )}data: ${JSON.stringify(deltaChunk({ content: " late" }))}\n\n`
-      const response = yield* LLMClient.generate(request).pipe(Effect.provide(fixedResponse(body)))
-
-      expect(response.text).toBe("Hello")
-      expect(response.finishReason).toEqual({ normalized: "stop", raw: "stop" })
-    }),
-  )
-
   it.effect("accepts nullable usage and preserves provider fields", () =>
     Effect.gen(function* () {
       const response = yield* LLMClient.generate(request).pipe(

packages/ai/test/provider/openai-responses.test.ts

@@ -2750,227 +2750,6 @@ describe("OpenAI Responses route", () => {
     }),
   )
 
-  it.effect("concludes reasoning at implicit summary boundaries", () =>
-    Effect.gen(function* () {
-      const response = yield* LLMClient.generate(
-        LLMRequest.update(request, { providerOptions: { store: false } }),
-      ).pipe(
-        Effect.provide(
-          fixedResponse(
-            sseEvents(
-              {
-                type: "response.output_item.added",
-                item: { type: "reasoning", id: "rs_1", encrypted_content: null },
-              },
-              { type: "response.reasoning_summary_part.added", item_id: "rs_1", summary_index: 0 },
-              { type: "response.reasoning_summary_text.delta", item_id: "rs_1", summary_index: 0, delta: "First" },
-              // The next part is enough to conclude the previous one even when
-              // its done event is delayed.
-              { type: "response.reasoning_summary_part.added", item_id: "rs_1", summary_index: 1 },
-              { type: "response.reasoning_summary_part.done", item_id: "rs_1", summary_index: 0 },
-              { type: "response.reasoning_summary_text.delta", item_id: "rs_1", summary_index: 1, delta: "Second" },
-              { type: "response.reasoning_summary_part.done", item_id: "rs_1", summary_index: 1 },
-              // Some compatible providers begin the next part with its first delta.
-              { type: "response.reasoning_summary_text.delta", item_id: "rs_1", summary_index: 2, delta: "Third" },
-              {
-                type: "response.output_item.done",
-                item: { type: "reasoning", id: "rs_1", encrypted_content: "encrypted-state" },
-              },
-              { type: "response.completed", response: { id: "resp_1" } },
-            ),
-          ),
-        ),
-      )
-
-      expect(response.reasoning).toBe("FirstSecondThird")
-      expect(response.events.filter((event) => event.type.startsWith("reasoning-"))).toEqual([
-        {
-          type: "reasoning-start",
-          id: "rs_1:0",
-          providerMetadata: { openai: { itemId: "rs_1", reasoningEncryptedContent: null } },
-        },
-        { type: "reasoning-delta", id: "rs_1:0", text: "First", providerMetadata: undefined },
-        { type: "reasoning-end", id: "rs_1:0", providerMetadata: { openai: { itemId: "rs_1" } } },
-        {
-          type: "reasoning-start",
-          id: "rs_1:1",
-          providerMetadata: { openai: { itemId: "rs_1", reasoningEncryptedContent: null } },
-        },
-        { type: "reasoning-delta", id: "rs_1:1", text: "Second", providerMetadata: undefined },
-        {
-          type: "reasoning-end",
-          id: "rs_1:1",
-          providerMetadata: { openai: { itemId: "rs_1" } },
-        },
-        {
-          type: "reasoning-start",
-          id: "rs_1:2",
-          providerMetadata: { openai: { itemId: "rs_1", reasoningEncryptedContent: null } },
-        },
-        { type: "reasoning-delta", id: "rs_1:2", text: "Third", providerMetadata: undefined },
-        {
-          type: "reasoning-end",
-          id: "rs_1:2",
-          providerMetadata: { openai: { itemId: "rs_1", reasoningEncryptedContent: "encrypted-state" } },
-        },
-      ])
-    }),
-  )
-
-  it.effect("rejects a reasoning item that starts before the previous item ends", () =>
-    Effect.gen(function* () {
-      const error = yield* LLMClient.generate(request).pipe(
-        Effect.provide(
-          fixedResponse(
-            sseEvents(
-              { type: "response.output_item.added", item: { type: "reasoning", id: "rs_1" } },
-              { type: "response.reasoning_summary_text.delta", item_id: "rs_1", summary_index: 0, delta: "First" },
-              { type: "response.output_item.added", item: { type: "reasoning", id: "rs_2" } },
-            ),
-          ),
-        ),
-        Effect.flip,
-      )
-
-      expect(error.reason._tag).toBe("InvalidProviderOutput")
-      expect(error.message).toContain("started reasoning before the previous item ended")
-    }),
-  )
-
-  it.effect("concludes text at implicit message boundaries", () =>
-    Effect.gen(function* () {
-      const response = yield* LLMClient.generate(request).pipe(
-        Effect.provide(
-          fixedResponse(
-            sseEvents(
-              // An item that never streams text is untracked at the boundary too.
-              { type: "response.output_item.added", item: { type: "message", id: "msg_0" } },
-              { type: "response.output_item.added", item: { type: "message", id: "msg_1" } },
-              { type: "response.output_text.delta", item_id: "msg_1", delta: "First" },
-              // The previous message's done event is missing; the next message
-              // item is the boundary for its open text.
-              { type: "response.output_item.added", item: { type: "message", id: "msg_2" } },
-              // Late deltas for concluded or untracked messages must stay no-ops.
-              { type: "response.output_text.delta", item_id: "msg_1", delta: " late" },
-              { type: "response.output_text.delta", item_id: "msg_0", delta: " stale" },
-              { type: "response.output_text.delta", item_id: "msg_2", delta: "Second" },
-              { type: "response.output_item.done", item: { type: "message", id: "msg_2" } },
-              { type: "response.completed", response: { id: "resp_1" } },
-            ),
-          ),
-        ),
-      )
-
-      expect(response.text).toBe("FirstSecond")
-      expect(response.events.filter((event) => event.type.startsWith("text-"))).toMatchObject([
-        { type: "text-start", id: "msg_1" },
-        { type: "text-delta", id: "msg_1", text: "First" },
-        { type: "text-end", id: "msg_1" },
-        { type: "text-start", id: "msg_2" },
-        { type: "text-delta", id: "msg_2", text: "Second" },
-        { type: "text-end", id: "msg_2" },
-      ])
-    }),
-  )
-
-  it.effect("opens the tool lifecycle for a done-only function call", () =>
-    Effect.gen(function* () {
-      const response = yield* LLMClient.generate(request).pipe(
-        Effect.provide(
-          fixedResponse(
-            sseEvents(
-              // No output_item.added: the call arrives only as a completed item.
-              {
-                type: "response.output_item.done",
-                item: {
-                  type: "function_call",
-                  id: "fc_1",
-                  call_id: "call_1",
-                  name: "lookup",
-                  arguments: '{"query":"weather"}',
-                },
-              },
-              { type: "response.completed", response: { id: "resp_1" } },
-            ),
-          ),
-        ),
-      )
-
-      expect(response.events.filter((event) => event.type.startsWith("tool-"))).toMatchObject([
-        { type: "tool-input-start", id: "call_1", name: "lookup" },
-        { type: "tool-input-end", id: "call_1", name: "lookup" },
-        { type: "tool-call", id: "call_1", name: "lookup", input: { query: "weather" } },
-      ])
-      expect(response.finishReason.normalized).toBe("tool-calls")
-    }),
-  )
-
-  it.effect("ignores duplicate item boundary events", () =>
-    Effect.gen(function* () {
-      const response = yield* LLMClient.generate(request).pipe(
-        Effect.provide(
-          fixedResponse(
-            sseEvents(
-              { type: "response.output_item.added", item: { type: "reasoning", id: "rs_1" } },
-              // Duplicate added for a known item is not overlap and must no-op.
-              { type: "response.output_item.added", item: { type: "reasoning", id: "rs_1" } },
-              { type: "response.reasoning_summary_text.delta", item_id: "rs_1", summary_index: 0, delta: "Think" },
-              { type: "response.output_item.done", item: { type: "reasoning", id: "rs_1" } },
-              { type: "response.output_item.done", item: { type: "reasoning", id: "rs_1" } },
-              {
-                type: "response.output_item.added",
-                item: { type: "function_call", id: "fc_1", call_id: "call_1", name: "lookup", arguments: "" },
-              },
-              {
-                type: "response.output_item.added",
-                item: { type: "function_call", id: "fc_1", call_id: "call_1", name: "lookup", arguments: "" },
-              },
-              { type: "response.function_call_arguments.delta", item_id: "fc_1", delta: '{"query":"weather"}' },
-              {
-                type: "response.output_item.done",
-                item: {
-                  type: "function_call",
-                  id: "fc_1",
-                  call_id: "call_1",
-                  name: "lookup",
-                  arguments: '{"query":"weather"}',
-                },
-              },
-              {
-                type: "response.output_item.done",
-                item: {
-                  type: "function_call",
-                  id: "fc_1",
-                  call_id: "call_1",
-                  name: "lookup",
-                  arguments: '{"query":"weather"}',
-                },
-              },
-              // Duplicates that drop the item id still resolve the same call.
-              {
-                type: "response.output_item.done",
-                item: { type: "function_call", call_id: "call_1", name: "lookup", arguments: '{"query":"weather"}' },
-              },
-              {
-                type: "response.output_item.added",
-                item: { type: "function_call", call_id: "call_1", name: "lookup", arguments: "" },
-              },
-              { type: "response.completed", response: { id: "resp_1" } },
-            ),
-          ),
-        ),
-      )
-
-      expect(response.reasoning).toBe("Think")
-      expect(response.events.filter((event) => event.type === "reasoning-start")).toHaveLength(1)
-      expect(response.events.filter((event) => event.type === "reasoning-end")).toHaveLength(1)
-      expect(response.events.filter((event) => event.type === "tool-input-start")).toHaveLength(1)
-      expect(response.events.filter(LLMEvent.is.toolCall)).toEqual([
-        expect.objectContaining({ id: "call_1", input: { query: "weather" } }),
-      ])
-    }),
-  )
-
   it.effect("reconciles reasoning summaries that arrive only as finals", () =>
     Effect.gen(function* () {
       const response = yield* LLMClient.generate(

packages/ai/test/provider/openrouter.test.ts

@@ -305,11 +305,9 @@ describe("OpenRouter", () => {
       expect(prepared.body.messages).toEqual([
         {
           role: "assistant",
-          content: "",
+          content: null,
           reasoning: "Thinking",
-          reasoning_content: undefined,
           reasoning_details: details,
-          reasoning_text: undefined,
         },
       ])
     }),
@@ -337,14 +335,7 @@ describe("OpenRouter", () => {
       )
 
       expect(prepared.body.messages).toEqual([
-        {
-          role: "assistant",
-          content: "",
-          reasoning: "Thinking",
-          reasoning_content: undefined,
-          reasoning_details: details,
-          reasoning_text: undefined,
-        },
+        { role: "assistant", content: null, reasoning: "Thinking", reasoning_details: details },
       ])
     }),
   )
@@ -370,14 +361,7 @@ describe("OpenRouter", () => {
       )
 
       expect(prepared.body.messages).toEqual([
-        {
-          role: "assistant",
-          content: "",
-          reasoning: "AB",
-          reasoning_content: undefined,
-          reasoning_details: details,
-          reasoning_text: undefined,
-        },
+        { role: "assistant", content: null, reasoning: "AB", reasoning_details: details },
       ])
     }),
   )
@@ -392,16 +376,7 @@ describe("OpenRouter", () => {
         }),
       )
 
-      expect(prepared.body.messages).toEqual([
-        {
-          role: "assistant",
-          content: "",
-          reasoning: undefined,
-          reasoning_content: undefined,
-          reasoning_details: undefined,
-          reasoning_text: undefined,
-        },
-      ])
+      expect(prepared.body.messages).toEqual([{ role: "assistant", content: null }])
     }),
   )
 })

packages/ai/test/response.test.ts

@@ -104,60 +104,6 @@ describe("LLMResponse reducer", () => {
     ])
   })
 
-  test("authoritative text-end value replaces accumulated deltas", () => {
-    const response = LLMResponse.fromEvents([
-      LLMEvent.textStart({ id: "t1" }),
-      LLMEvent.textDelta({ id: "t1", text: "Hel" }),
-      LLMEvent.textEnd({ id: "t1", text: "Hello!" }),
-      LLMEvent.finish({ reason: { normalized: "stop" } }),
-    ])
-
-    expect(response?.message.content).toEqual([{ type: "text", text: "Hello!" }])
-    expect(response?.text).toBe("Hello!")
-  })
-
-  test("text-end without value keeps joined deltas", () => {
-    const response = LLMResponse.fromEvents([
-      LLMEvent.textStart({ id: "t1" }),
-      LLMEvent.textDelta({ id: "t1", text: "Hel" }),
-      LLMEvent.textDelta({ id: "t1", text: "lo" }),
-      LLMEvent.textEnd({ id: "t1" }),
-      LLMEvent.finish({ reason: { normalized: "stop" } }),
-    ])
-
-    expect(response?.message.content).toEqual([{ type: "text", text: "Hello" }])
-    expect(response?.text).toBe("Hello")
-  })
-
-  test("authoritative reasoning-end value replaces only its own fragment", () => {
-    const response = LLMResponse.fromEvents([
-      LLMEvent.reasoningStart({ id: "r1:0" }),
-      LLMEvent.reasoningDelta({ id: "r1:0", text: "First summ" }),
-      LLMEvent.reasoningEnd({ id: "r1:0", text: "First summary." }),
-      LLMEvent.reasoningStart({ id: "r1:1" }),
-      LLMEvent.reasoningDelta({ id: "r1:1", text: "Second summary." }),
-      LLMEvent.reasoningEnd({ id: "r1:1" }),
-      LLMEvent.finish({ reason: { normalized: "stop" } }),
-    ])
-
-    expect(response?.message.content).toEqual([
-      { type: "reasoning", text: "First summary." },
-      { type: "reasoning", text: "Second summary." },
-    ])
-    expect(response?.reasoning).toBe("First summary.Second summary.")
-  })
-
-  test("end value recovers a fragment that streamed no deltas", () => {
-    const response = LLMResponse.fromEvents([
-      LLMEvent.textStart({ id: "t1" }),
-      LLMEvent.textEnd({ id: "t1", text: "Hello!" }),
-      LLMEvent.finish({ reason: { normalized: "stop" } }),
-    ])
-
-    expect(response?.message.content).toEqual([{ type: "text", text: "Hello!" }])
-    expect(response?.text).toBe("Hello!")
-  })
-
   test("clears malformed tool input without appending an executable call", () => {
     const state = reduce([
       LLMEvent.toolInputStart({ id: "call_1", name: "lookup" }),

packages/ai/test/schema.test.ts

@@ -250,7 +250,7 @@ test("AI error reasons are tagged Errors with required messages", () => {
       provider: model.provider,
       model: model.id,
     }),
-    new AuthenticationError({ message: "Missing credentials" }),
+    new AuthenticationError({ message: "Missing credentials", kind: "missing" }),
     new RateLimitError({ message: "Rate limited" }),
     new QuotaExceededError({ message: "Quota exceeded" }),
     new ContentPolicyError({ message: "Content blocked" }),

packages/ai/test/testing.test.ts

@@ -1,331 +0,0 @@
-import { describe, expect } from "bun:test"
-import { AIError, LanguageModel, LLM, LLMClient, LLMEvent, LLMRequest, RateLimitError } from "../src/index.js"
-import { OpenAIChat } from "../src/protocols/openai-chat.js"
-import { TestLLM } from "../src/testing.js"
-import { Effect, Fiber, Latch, Stream } from "effect"
-import { testEffect } from "./lib/effect.js"
-
-const request = LLM.request({
-  model: LanguageModel.make({ id: "fictional-model", provider: "fixture", route: OpenAIChat.route }),
-  prompt: "Say hello",
-})
-const legacy = testEffect(TestLLM.layer())
-const it = testEffect(TestLLM.testLayer())
-
-describe("TestLLM legacy client", () => {
-  legacy.effect("does not observe requests or consume responses until execution", () =>
-    Effect.gen(function* () {
-      const llm = yield* TestLLM.Service
-      yield* llm.push(TestLLM.text("first", "first"), TestLLM.text("second", "second"))
-
-      llm.client.stream(request)
-      llm.client.generate(request)
-      expect(llm.requests).toEqual([])
-
-      expect((yield* llm.client.generate(request)).text).toBe("first")
-      expect((yield* llm.client.generate(request)).text).toBe("second")
-      expect(llm.requests).toEqual([request, request])
-    }),
-  )
-
-  legacy.effect("assigns and records a fresh response for each execution", () =>
-    Effect.gen(function* () {
-      const llm = yield* TestLLM.Service
-      yield* llm.push(
-        TestLLM.text("first", "first"),
-        TestLLM.text("second", "second"),
-        TestLLM.text("third", "third"),
-        TestLLM.text("fourth", "fourth"),
-      )
-      const stream = llm.client.stream(request)
-      const generate = llm.client.generate(request)
-
-      expect(yield* Stream.runCollect(stream)).toEqual(TestLLM.text("first", "first"))
-      expect(yield* Stream.runCollect(stream)).toEqual(TestLLM.text("second", "second"))
-      expect((yield* generate).text).toBe("third")
-      expect((yield* generate).text).toBe("fourth")
-      expect(llm.requests).toEqual([request, request, request, request])
-    }),
-  )
-
-  legacy.effect("keeps module-level controls and clientLayer on the same backing state", () =>
-    Effect.gen(function* () {
-      const llm = yield* TestLLM.Service
-      const requests = llm.requests
-      yield* TestLLM.push(TestLLM.text("queued", "queued"))
-      yield* TestLLM.always(TestLLM.text("fallback", "fallback"))
-      expect((yield* LLMClient.generate(request).pipe(Effect.provide(TestLLM.clientLayer))).text).toBe("queued")
-      yield* TestLLM.wait(1)
-      expect(requests).toEqual([request])
-      requests.length = 0
-      expect((yield* llm.client.generate(request)).text).toBe("fallback")
-      expect(llm.requests).toBe(requests)
-      expect(requests).toEqual([request])
-    }),
-  )
-})
-
-describe("TestLLM first-class client", () => {
-  it.effect("provides the same object under normal and test tags with snapshot observations", () =>
-    Effect.gen(function* () {
-      const llm = yield* TestLLM.Test
-      const client = yield* LLMClient.Service
-      expect(client).toBe(llm)
-      const before = yield* llm.requests()
-      yield* llm.push(TestLLM.text("hello", "answer"))
-      const generate = client.generate(request)
-      client.stream(request)
-      expect(yield* llm.requests()).toEqual([])
-
-      expect((yield* generate).text).toBe("hello")
-      expect(before).toEqual([])
-      expect(yield* llm.requests()).toEqual([request])
-      expect(yield* llm.requests()).not.toBe(yield* llm.requests())
-    }),
-  )
-
-  it.effect("prioritizes queued replies over request-dependent and constant fallbacks", () =>
-    Effect.gen(function* () {
-      const llm = yield* TestLLM.Test
-      const served: LLMRequest[] = []
-      yield* llm.always(TestLLM.text("old fallback", "old"))
-      yield* llm.push(TestLLM.text("first", "first"), TestLLM.text("second", "second"))
-      yield* llm.serve((request) => {
-        served.push(request)
-        return TestLLM.text(request.promptCacheKey ?? "default", "served")
-      })
-
-      expect((yield* LLMClient.generate(request)).text).toBe("first")
-      expect((yield* LLMClient.generate(request)).text).toBe("second")
-      expect(served).toEqual([])
-      const selected = LLMRequest.update(request, { promptCacheKey: "selected" })
-      expect((yield* LLMClient.generate(selected)).text).toBe("selected")
-      expect((yield* LLMClient.generate(request)).text).toBe("default")
-      expect(served).toEqual([selected, request])
-
-      yield* llm.push(TestLLM.text("queued again", "queued"))
-      yield* llm.always(TestLLM.text("constant", "constant"))
-      expect((yield* LLMClient.generate(request)).text).toBe("queued again")
-      expect((yield* LLMClient.generate(request)).text).toBe("constant")
-      expect((yield* LLMClient.generate(request)).text).toBe("constant")
-      expect(served).toEqual([selected, request])
-    }),
-  )
-
-  testEffect(
-    TestLLM.testLayer({
-      transformRequest: (request) => LLMRequest.update(request, { promptCacheKey: "observation" }),
-    }),
-  ).effect("transforms observations without changing the request passed to the responder", () =>
-    Effect.gen(function* () {
-      const llm = yield* TestLLM.Test
-      yield* llm.serve((input) => {
-        expect(input).toBe(request)
-        return TestLLM.text("original", "answer")
-      })
-      const generate = llm.generate(request)
-      expect(yield* llm.requests()).toEqual([])
-      expect((yield* generate).text).toBe("original")
-      expect(yield* llm.requests()).toEqual([LLMRequest.update(request, { promptCacheKey: "observation" })])
-    }),
-  )
-
-  it.effect("broadcasts request-arrival waits and satisfies waits registered afterward", () =>
-    Effect.gen(function* () {
-      const llm = yield* TestLLM.Test
-      yield* llm.always(TestLLM.stop())
-      const first = yield* llm.wait(2).pipe(Effect.forkChild({ startImmediately: true }))
-      const second = yield* llm.wait(2).pipe(Effect.forkChild({ startImmediately: true }))
-      yield* llm.generate(request)
-      expect(first.pollUnsafe()).toBeUndefined()
-      expect(second.pollUnsafe()).toBeUndefined()
-      yield* llm.generate(request)
-      yield* Fiber.join(first)
-      yield* Fiber.join(second)
-      yield* llm.wait(2)
-      expect(yield* llm.requests()).toHaveLength(2)
-    }),
-  )
-  ;(["queued", "served"] as const).forEach((mode) => {
-    it.effect(`assigns ${mode} replies before resuming request-arrival continuations`, () =>
-      Effect.gen(function* () {
-        const llm = yield* TestLLM.Test
-        const responses = [TestLLM.text("first", "first"), TestLLM.text("second", "second")]
-        yield* mode === "queued" ? llm.push(...responses) : llm.serve(() => responses.shift() ?? [])
-        const later = yield* llm
-          .wait(1)
-          .pipe(Effect.andThen(llm.generate(request)), Effect.forkChild({ startImmediately: true }))
-
-        expect((yield* llm.generate(request)).text).toBe("first")
-        expect((yield* Fiber.join(later)).text).toBe("second")
-        expect(yield* llm.requests()).toEqual([request, request])
-      }),
-    )
-  })
-
-  it.effect("notifies arrival waiters even when the responder defects", () =>
-    Effect.gen(function* () {
-      const llm = yield* TestLLM.Test
-      const defect = new Error("Broken fixture responder")
-      yield* llm.serve(() => {
-        throw defect
-      })
-      const waiter = yield* llm.wait(1).pipe(Effect.forkChild({ startImmediately: true }))
-      expect(yield* llm.generate(request).pipe(Effect.catchDefect(Effect.succeed))).toBe(defect)
-      yield* Fiber.join(waiter)
-    }),
-  )
-
-  it.effect("builds independent state even when the same layer is provided concurrently", () => {
-    const layer = TestLLM.testLayer()
-    const run = Effect.gen(function* () {
-      const llm = yield* TestLLM.Test
-      expect(yield* llm.requests()).toEqual([])
-      yield* llm.push(TestLLM.text("one", "answer"))
-      expect((yield* LLMClient.generate(request)).text).toBe("one")
-      return yield* llm.requests()
-    }).pipe(Effect.provide(layer))
-    return Effect.gen(function* () {
-      expect(yield* Effect.all([run, run], { concurrency: "unbounded" })).toEqual([[request], [request]])
-    })
-  })
-
-  it.effect("counts concurrent starts on one gate without serializing their response assignment", () =>
-    Effect.gen(function* () {
-      const llm = yield* TestLLM.Test
-      yield* llm.push(TestLLM.text("first", "first"), TestLLM.text("second", "second"))
-      const generate = llm.generate(request)
-      const gate = yield* llm.gate()
-      const first = yield* generate.pipe(Effect.forkChild({ startImmediately: true }))
-      yield* gate.started
-      const second = yield* generate.pipe(Effect.forkChild({ startImmediately: true }))
-      yield* gate.started
-      yield* llm.wait(2)
-      expect(first.pollUnsafe()).toBeUndefined()
-      expect(second.pollUnsafe()).toBeUndefined()
-      yield* gate.release
-      expect((yield* Fiber.join(first)).text).toBe("first")
-      expect((yield* Fiber.join(second)).text).toBe("second")
-    }),
-  )
-
-  it.effect("does not clear a replacement gate when the previous gate is released", () =>
-    Effect.gen(function* () {
-      const llm = yield* TestLLM.Test
-      yield* llm.always(TestLLM.stop())
-      const previous = yield* llm.gate()
-      const first = yield* llm.generate(request).pipe(Effect.forkChild({ startImmediately: true }))
-      yield* previous.started
-      const next = yield* llm.gate()
-      yield* previous.release
-      yield* Fiber.join(first)
-
-      const second = yield* llm.generate(request).pipe(Effect.forkChild({ startImmediately: true }))
-      yield* next.started
-      expect(second.pollUnsafe()).toBeUndefined()
-      yield* next.release
-      yield* Fiber.join(second)
-    }),
-  )
-
-  it.effect("releases a gate when its deliberately narrower scope closes", () =>
-    Effect.gen(function* () {
-      const llm = yield* TestLLM.Test
-      yield* llm.always(TestLLM.stop())
-      // Only the gate is scoped here; its release must happen before the test ends.
-      const run = yield* Effect.scoped(
-        Effect.gen(function* () {
-          const gate = yield* llm.gate()
-          const run = yield* llm.generate(request).pipe(Effect.forkChild({ startImmediately: true }))
-          yield* gate.started
-          return run
-        }),
-      )
-      yield* Fiber.join(run)
-      yield* llm.generate(request)
-      expect(yield* llm.requests()).toHaveLength(2)
-    }),
-  )
-
-  it.effect("keeps an executed response consumed after interruption and permits later requests", () =>
-    Effect.gen(function* () {
-      const llm = yield* TestLLM.Test
-      yield* llm.push(TestLLM.text("interrupted", "first"), TestLLM.text("next", "second"))
-      const gate = yield* llm.gate()
-      const run = yield* llm.generate(request).pipe(Effect.forkChild({ startImmediately: true }))
-      yield* gate.started
-      yield* Fiber.interrupt(run)
-      yield* gate.release
-      expect((yield* llm.generate(request)).text).toBe("next")
-      expect(yield* llm.requests()).toHaveLength(2)
-    }),
-  )
-
-  it.effect("consumes a supplied stream's post-finish tail and runs its finalizer", () =>
-    Effect.gen(function* () {
-      const llm = yield* TestLLM.Test
-      const tail = yield* Latch.make()
-      const release = yield* Latch.make()
-      const finalized = yield* Latch.make()
-      yield* llm.push(
-        Stream.unwrap(
-          Effect.gen(function* () {
-            yield* Effect.addFinalizer(() => finalized.open)
-            return Stream.fromIterable(TestLLM.text("complete", "answer")).pipe(
-              Stream.concat(Stream.fromEffect(tail.open.pipe(Effect.andThen(release.await))).pipe(Stream.drain)),
-            )
-          }),
-        ),
-      )
-      const run = yield* llm.generate(request).pipe(Effect.forkChild({ startImmediately: true }))
-      yield* tail.await
-      expect(run.pollUnsafe()).toBeUndefined()
-      yield* release.open
-      expect((yield* Fiber.join(run)).text).toBe("complete")
-      yield* finalized.await
-    }),
-  )
-
-  it.effect("preserves irregular events, ordinary EOF, typed failures, and responder defects", () =>
-    Effect.gen(function* () {
-      const llm = yield* TestLLM.Test
-      const events = [LLMEvent.textDelta({ id: "without-start", text: "partial" })]
-      yield* llm.push(events, [])
-      expect(yield* Stream.runCollect(llm.stream(request))).toEqual(events)
-      expect(yield* Stream.runCollect(llm.stream(request))).toEqual([])
-
-      const failure = new AIError({ reason: new RateLimitError({ message: "Try later" }) })
-      const observed: LLMEvent[] = []
-      yield* llm.serve(() => TestLLM.failAfter(failure, ...events))
-      expect(
-        yield* llm.stream(request).pipe(
-          Stream.runForEach((event) => Effect.sync(() => observed.push(event))),
-          Effect.flip,
-        ),
-      ).toBe(failure)
-      expect(observed).toEqual(events)
-      expect(yield* llm.generate(request).pipe(Effect.flip)).toBe(failure)
-
-      const defect = new Error("Broken fixture responder")
-      yield* llm.serve(() => {
-        throw defect
-      })
-      expect(yield* llm.generate(request).pipe(Effect.catchDefect(Effect.succeed))).toBe(defect)
-      yield* llm.push(TestLLM.text("recovered", "answer"))
-      expect((yield* llm.generate(request)).text).toBe("recovered")
-    }),
-  )
-
-  it.effect("defects on unexpected requests instead of waiting for a late script", () =>
-    Effect.gen(function* () {
-      const llm = yield* TestLLM.Test
-      const defect = yield* llm.generate(request).pipe(Effect.catchDefect(Effect.succeed))
-      expect(defect).toBeInstanceOf(Error)
-      if (!(defect instanceof Error)) return
-      expect(defect.message).toBe("TestLLM has no response for request 1")
-      expect(yield* llm.requests()).toEqual([request])
-      yield* llm.push(TestLLM.stop())
-      yield* llm.generate(request)
-    }),
-  )
-})

packages/ai/tsconfig.types.json

@@ -5,5 +5,5 @@
     "noEmit": true,
     "rootDir": "."
   },
-  "include": ["test/**/*.types.ts", "test/testing.test.ts"]
+  "include": ["test/**/*.types.ts"]
 }

packages/app/e2e/regression/tab-navigate-mousedown.spec.ts

@@ -209,29 +209,6 @@ test("appearance experimental setting switches tab orientation", async ({ page }
   await page.setViewportSize({ width: 390, height: 360 })
   await version.scrollIntoViewIfNeeded()
   await expect(version).toBeInViewport()
-
-  // Reload the UI-selected preference without seeding settings storage.
-  await page.reload()
-  const href = `/server/${base64Encode(server)}/session/${sessionA.id}`
-  await expect(
-    page
-      .locator('[data-slot="titlebar-tabs"]')
-      .locator(`[data-titlebar-tab-link][href="${href}"]`)
-      .getByText(sessionA.title, { exact: true }),
-  ).toBeVisible()
-  await expect(page.locator('[data-slot="vertical-tabs-sidebar"]')).toHaveCount(0)
-
-  await page.setViewportSize({ width: 1280, height: 720 })
-  await expect(
-    page
-      .locator('[data-slot="vertical-tabs-sidebar"]')
-      .locator(`[data-titlebar-tab-link][href="${href}"]`)
-      .getByText(sessionA.title, { exact: true }),
-  ).toBeVisible()
-  await expect(page.locator('[data-slot="titlebar-tabs"]')).toHaveCount(0)
-  await page.keyboard.press("Control+,")
-  await settings.getByRole("tab", { name: "Appearance" }).click()
-  await expect(layout).toContainText("Vertical")
 })
 
 test("vertical tab preference falls back to horizontal on mobile", async ({ page }) => {

packages/app/e2e/service-worker/cache.spec.ts

@@ -198,10 +198,6 @@ fixture(
 fixture(
   "precaches public files of every type and size, excluding deployment metadata and source maps",
   async ({ page, site, builds, context }) => {
-    for (const output of Object.values(builds)) {
-      expect(output["/sw.js.map"]).toBeUndefined()
-      expect(Object.keys(output).some((path) => path.startsWith("/_assets/") && path.endsWith(".map"))).toBe(true)
-    }
     await install(page, site.url)
     const files = ["/nested/data.json", "/nested/font.woff2", "/nested/module.wasm", "/large.bin"]
     await context.setOffline(true)

packages/app/package.json

@@ -42,18 +42,21 @@
     "@playwright/test": "catalog:",
     "@sentry/vite-plugin": "catalog:",
     "@tailwindcss/vite": "4.3.3",
+    "@tsconfig/bun": "1.0.9",
     "@types/bun": "catalog:",
     "@types/luxon": "catalog:",
     "@types/node": "catalog:",
     "@typescript/native-preview": "catalog:",
-    "diff": "catalog:",
     "happy-dom": "20.11.1",
     "tw-animate-css": "1.4.0",
-    "vite": "8.2.2",
+    "typescript": "catalog:",
+    "vite": "8.2.1",
+    "vite-plugin-icons-spritesheet": "3.0.1",
     "vite-plugin-pwa": "1.3.0",
     "vite-plugin-solid": "2.11.14"
   },
   "dependencies": {
+    "@corvu/drawer": "catalog:",
     "@dnd-kit/abstract": "0.5.0",
     "@dnd-kit/dom": "0.5.0",
     "@dnd-kit/helpers": "0.5.0",
@@ -68,23 +71,28 @@
     "@pierre/trees": "1.0.0-beta.4",
     "@sentry/solid": "catalog:",
     "@solid-primitives/event-bus": "1.1.2",
-    "@solid-primitives/event-listener": "catalog:",
+    "@solid-primitives/event-listener": "2.4.5",
     "@solid-primitives/i18n": "2.2.1",
     "@solid-primitives/keyed": "1.5.3",
-    "@solid-primitives/media": "catalog:",
-    "@solid-primitives/resize-observer": "catalog:",
+    "@solid-primitives/media": "2.3.3",
+    "@solid-primitives/resize-observer": "2.1.5",
     "@solid-primitives/scheduled": "1.5.3",
     "@solid-primitives/storage": "catalog:",
     "@solidjs/meta": "catalog:",
     "@solidjs/router": "catalog:",
     "@tanstack/solid-query": "5.91.4",
     "@tanstack/solid-virtual": "catalog:",
+    "diff": "catalog:",
     "effect": "catalog:",
     "fuzzysort": "catalog:",
     "ghostty-web": "github:anomalyco/ghostty-web#83c0a07b8628b748aed073b232cb4b52a6ca11c1",
     "luxon": "catalog:",
+    "marked": "catalog:",
+    "marked-shiki": "catalog:",
     "remeda": "catalog:",
+    "shiki": "catalog:",
     "solid-js": "catalog:",
+    "solid-list": "catalog:",
     "solid-presence": "0.2.0",
     "tailwindcss": "4.3.3"
   }

packages/app/src/runtime/i18n/en.ts

@@ -892,6 +892,23 @@ export const dict = {
   "settings.tab.notifications": "Notifications",
   "settings.tab.projects": "Projects",
   "settings.tab.extensions": "Extensions",
+  "settings.tab.about": "About",
+  "settings.about.version": "Version {{version}}",
+  "settings.about.devVersion": "development",
+  "settings.about.license": "Released under the MIT License",
+  "settings.about.writtenBy": "Written by",
+  "settings.about.illustratedBy": "Illustrated by",
+  "settings.about.and": "and",
+  "settings.about.otherContributor.one": "{{count}} other",
+  "settings.about.otherContributor.other": "{{count}} others",
+  "settings.about.firstPublished": "First published in Missouri, USA",
+  "settings.about.firstIllustrated": "First illustrated in London, England",
+  "settings.about.website": "www.opencode.ai",
+  "settings.about.description": "OpenCode, the open source coding agent",
+  "settings.about.trademark": "OpenCode is a registered trademark of Anomaly Innovations, Inc.",
+  "settings.about.typeset": "Typeset in Inter and IBM Plex Mono",
+  "settings.about.tagline": "AI can’t build great software, without you",
+  "settings.about.copyright": "© Anomaly Innovations, Inc.",
   "settings.preferences.description": "Customize preferences and theme and default behavior",
   "settings.appearance.description": "Customize theme and fonts",
   "settings.appearance.section.experimental": "Experimental",

packages/app/src/runtime/persistence/storage.ts

@@ -644,7 +644,7 @@ export function persisted<T>(
       : undefined
   if (channel) onCleanup(() => channel.close())
 
-  const [state, setState, init] = makePersisted<T, typeof store>(store, {
+  const [state, setState, init] = makePersisted(store, {
     name: config.key,
     storage,
     sync: channel ? messageSync(channel) : undefined,

packages/app/src/runtime/server/image.test.ts

@@ -1,135 +0,0 @@
-import { describe, expect, test } from "bun:test"
-import { createApiForServer } from "./api"
-import { readLocalImage } from "./image"
-
-function setup(
-  respond: (init?: RequestInit) => Response | Promise<Response> = () => new Response(new Uint8Array([0, 127, 255])),
-) {
-  const requests: Array<{ url: URL; init?: RequestInit }> = []
-  const api = createApiForServer({
-    server: { url: "https://server.example:4096", username: "image-user", password: "secret" },
-    fetch: (async (input: string | URL | Request, init?: RequestInit) => {
-      requests.push({ url: new URL(input instanceof Request ? input.url : input), init })
-      return respond(init)
-    }) as typeof fetch,
-  })
-  return { api, requests }
-}
-
-describe("readLocalImage", () => {
-  test.each([
-    ["images/screen #1 + 50% ?.PNG", "/workspace/project", "images/screen%20%231%20%2B%2050%25%20%3F.PNG"],
-    ["C:/tmp/opencode/screen #1.png", "C:/tmp/opencode/", "screen%20%231.png"],
-    ["d:/screen.png", "d:/", "screen.png"],
-    ["D:/charts/screen.png", "D:/charts/", "screen.png"],
-    ["Z:/charts/screen.png", "Z:/charts/", "screen.png"],
-    ["/tmp/opencode/screen #1.png", "/tmp/opencode/", "screen%20%231.png"],
-    ["/screen.png", "/", "screen.png"],
-  ])("reads %s with the correct location and authentication", async (path, directory, encoded) => {
-    const { api, requests } = setup()
-    const signal = new AbortController().signal
-    const blob = await readLocalImage(api, "/workspace/project", path, signal)
-
-    expect(blob).toBeInstanceOf(Blob)
-    expect(blob?.type).toBe("image/png")
-    expect(new Uint8Array(await blob!.arrayBuffer())).toEqual(new Uint8Array([0, 127, 255]))
-    expect(requests).toHaveLength(1)
-    expect(requests[0].url.origin).toBe("https://server.example:4096")
-    expect(requests[0].url.pathname).toBe(`/api/fs/read/${encoded}`)
-    expect([...requests[0].url.searchParams]).toEqual([["location[directory]", directory]])
-    expect(requests[0].init?.method).toBe("GET")
-    expect(new Headers(requests[0].init?.headers).get("authorization")).toBe(`Basic ${btoa("image-user:secret")}`)
-    expect(requests[0].init?.signal).toBe(signal)
-  })
-
-  test("preserves literal percent escapes and encodes the supplied relative location", async () => {
-    const { api, requests } = setup()
-    await readLocalImage(api, "C:/project #1 + 50%", "images/literal%20name.png", new AbortController().signal)
-
-    expect(requests[0].url.href).toBe(
-      "https://server.example:4096/api/fs/read/images/literal%2520name.png?location%5Bdirectory%5D=C%3A%2Fproject+%231+%2B+50%25",
-    )
-  })
-
-  test.each([
-    ["png", "image/png"],
-    ["jpeg", "image/jpeg"],
-    ["JPG", "image/jpeg"],
-    ["gif", "image/gif"],
-    ["webp", "image/webp"],
-    ["SVG", "image/svg+xml"],
-    ["avif", "image/avif"],
-    ["bmp", "image/bmp"],
-    ["ico", "image/x-icon"],
-  ])("uses the MIME type for .%s rather than the response header", async (extension, type) => {
-    const { api } = setup(
-      () => new Response("image bytes", { headers: { "content-type": "application/octet-stream" } }),
-    )
-    const blob = await readLocalImage(api, "/repo", `image.${extension}`, new AbortController().signal)
-    expect(blob?.type).toBe(type)
-    expect(await blob?.text()).toBe("image bytes")
-  })
-
-  test.each([
-    "https://example.com/image.png",
-    "HTTP://example.com/image.png",
-    "file:///tmp/image.png",
-    "data:image/png;base64,image.png",
-    "blob:https://example.com/image.png",
-    "custom+scheme:image.png",
-    "C:image.png",
-    "//server/share/image.png",
-    "\\\\server\\share\\image.png",
-    "//?/C:/image.png",
-    "///server/share/image.png",
-    "image.txt",
-    "image.html",
-    "image.constructor",
-    "image.png.txt",
-    "image",
-    "images.png/image",
-    "image.png/",
-    "",
-  ])("does not request unsupported input %s", async (path) => {
-    const { api, requests } = setup()
-    expect(await readLocalImage(api, "/repo", path, new AbortController().signal)).toBeUndefined()
-    expect(requests).toHaveLength(0)
-  })
-
-  test.each([400, 401])("propagates declared API errors (%s)", async (status) => {
-    const error = { _tag: "RequestError", message: "Cannot read image" }
-    const { api } = setup(() => Response.json(error, { status }))
-    await expect(readLocalImage(api, "/repo", "image.png", new AbortController().signal)).rejects.toEqual(error)
-  })
-
-  test.each([404, 500])("does not turn an unexpected HTTP status (%s) into a Blob", async (status) => {
-    const { api } = setup(() => new Response("Not an image", { status }))
-    await expect(readLocalImage(api, "/repo", "image.png", new AbortController().signal)).rejects.toMatchObject({
-      reason: "UnexpectedStatus",
-      cause: { status },
-    })
-  })
-
-  test("propagates transport failures", async () => {
-    const error = new Error("Connection lost")
-    const { api } = setup(() => Promise.reject(error))
-    await expect(readLocalImage(api, "/repo", "image.png", new AbortController().signal)).rejects.toMatchObject({
-      reason: "Transport",
-      cause: error,
-    })
-  })
-
-  test("forwards cancellation to an in-flight fetch", async () => {
-    const controller = new AbortController()
-    const { api, requests } = setup(
-      (init) =>
-        new Promise((_resolve, reject) => {
-          init?.signal?.addEventListener("abort", () => reject(init.signal?.reason), { once: true })
-        }),
-    )
-    const result = readLocalImage(api, "/repo", "image.png", controller.signal)
-    expect(requests[0].init?.signal).toBe(controller.signal)
-    controller.abort()
-    await expect(result).rejects.toMatchObject({ reason: "Transport", cause: controller.signal.reason })
-  })
-})

packages/app/src/runtime/server/image.ts

@@ -1,36 +0,0 @@
-import { getDirectory, getFilename } from "@opencode-ai/util/path"
-import type { OpenCodeClient } from "@opencode-ai/client/promise"
-
-const types = new Map([
-  ["png", "image/png"],
-  ["jpeg", "image/jpeg"],
-  ["jpg", "image/jpeg"],
-  ["gif", "image/gif"],
-  ["webp", "image/webp"],
-  ["svg", "image/svg+xml"],
-  ["avif", "image/avif"],
-  ["bmp", "image/bmp"],
-  ["ico", "image/x-icon"],
-])
-
-export async function readLocalImage(
-  api: Pick<OpenCodeClient, "file">,
-  directory: string,
-  path: string,
-  signal: AbortSignal,
-): Promise<Blob | undefined> {
-  const drive = /^[a-z]:\//i.test(path)
-  if (/^[\\/]{2}/.test(path) || (!drive && /^[a-z][a-z\d+.-]*:/i.test(path))) return
-  const type = types.get(path.match(/\.([^./]+)$/)?.[1]?.toLowerCase() ?? "")
-  if (!type) return
-  const absolute = drive || path.startsWith("/")
-  // Scope absolute images to their parent, including files outside the project.
-  const bytes = await api.file.read(
-    {
-      path: absolute ? getFilename(path) : path,
-      location: { directory: absolute ? getDirectory(path) : directory },
-    },
-    { signal },
-  )
-  return new Blob([new Uint8Array(bytes)], { type })
-}

packages/app/src/settings/about/about.tsx

@@ -0,0 +1,123 @@
+import { For, createResource, type JSX } from "solid-js"
+import { useLanguage } from "@/runtime/i18n/language"
+import { usePlatform } from "@/runtime/platform/platform"
+import { ExternalLink } from "@/runtime/platform/external-link"
+import legal from "./legal.svg"
+import anomalyBrush from "./anomaly-brush.svg"
+import { AnimatedWordmark } from "./animated-wordmark"
+import { FALLBACK_OTHER_CONTRIBUTORS, loadOtherContributorCount } from "./contributors"
+
+const writers = [
+  "thdxr",
+  "adamdotdev",
+  "rekram1-node",
+  "kitlangton",
+  "iamdavidhill",
+  "jayair",
+  "fwang",
+  "brendonovich",
+  "nexxeln",
+  "hona",
+  "kommander",
+  "jlongster",
+  "vimtor",
+  "r44vcorp",
+  "simonklee",
+  "arvsrn",
+] as const
+const illustrators = ["usrnk1", "ludvigrask_", "arvsrn", "iamdavidhill"] as const
+
+export function SettingsAbout(props: { active: boolean }) {
+  const language = useLanguage()
+  const platform = usePlatform()
+  const [otherContributors] = createResource(
+    () => props.active || undefined,
+    () => loadOtherContributorCount(platform.fetch ?? fetch),
+    { initialValue: FALLBACK_OTHER_CONTRIBUTORS },
+  )
+
+  return (
+    <div class="settings-about-content">
+      <div class="settings-about-intro">
+        <p>{language.t("settings.about.version", { version: platform.version ?? language.t("settings.about.devVersion") })}</p>
+        <p>{language.t("settings.about.license")}</p>
+      </div>
+
+      <AnimatedWordmark active={props.active} />
+
+      <div class="settings-about-credits">
+        <CreditLine
+          label={language.t("settings.about.writtenBy")}
+          names={writers}
+          and={language.t("settings.about.and")}
+          tail={
+            <ExternalLink href="https://github.com/anomalyco/opencode/graphs/contributors">
+              {language.plural("settings.about.otherContributor", otherContributors(), {
+                count: otherContributors(),
+              })}
+            </ExternalLink>
+          }
+        />
+        <CreditLine
+          label={language.t("settings.about.illustratedBy")}
+          names={illustrators}
+          and={language.t("settings.about.and")}
+        />
+      </div>
+
+      <div class="settings-about-publication">
+        <p>{language.t("settings.about.firstPublished")}</p>
+        <p>{language.t("settings.about.firstIllustrated")}</p>
+      </div>
+
+      <p class="settings-about-faint">
+        <ExternalLink href="https://opencode.ai">
+          <bdi dir="ltr">{language.t("settings.about.website")}</bdi>
+        </ExternalLink>
+      </p>
+
+      <div class="settings-about-details">
+        <p>{language.t("settings.about.description")}</p>
+        <p>{language.t("settings.about.trademark")}</p>
+        <p>{language.t("settings.about.typeset")}</p>
+      </div>
+
+      <p>{language.t("settings.about.tagline")}</p>
+      <img class="settings-about-legal" src={legal} alt="" />
+      <div class="settings-about-copyright">
+        <p>{language.t("settings.about.copyright")}</p>
+        <img class="settings-about-anomaly-brush" src={anomalyBrush} alt="" />
+      </div>
+    </div>
+  )
+}
+
+function CreditLine(props: {
+  label: string
+  names: readonly string[]
+  and: string
+  tail?: JSX.Element
+}) {
+  return (
+    <p>
+      {props.label}{" "}
+      <For each={props.names}>
+        {(name, index) => (
+          <>
+            {index() === 0 ? "" : index() === props.names.length - 1 && !props.tail ? `, ${props.and} ` : ", "}
+            <bdi dir="ltr">
+              <ExternalLink href={profile(name)}>{name}</ExternalLink>
+            </bdi>
+          </>
+        )}
+      </For>
+      {props.tail ? <>, {props.and} {props.tail}</> : null}
+    </p>
+  )
+}
+
+function profile(name: string) {
+  if (name === "r44vcorp") return "https://github.com/R44VC0RP"
+  if (name === "ludvigrask_") return "https://x.com/ludvigrask_"
+  return `https://github.com/${name}`
+}

packages/app/src/settings/about/animated-wordmark.tsx

@@ -0,0 +1,80 @@
+import { createEffect, For, on, onCleanup } from "solid-js"
+import { createStore } from "solid-js/store"
+
+const target = ["o", "p", "e", "n", "c", "o", "d", "e"] as const
+const choices = ["o", "p", "e", "n", "c", "d"] as const
+
+export function AnimatedWordmark(props: { active: boolean }) {
+  const [state, setState] = createStore({ letters: [...target] })
+  const timers = new Set<ReturnType<typeof setTimeout>>()
+
+  createEffect(
+    on(
+      () => props.active,
+      (active) => {
+        timers.forEach(clearTimeout)
+        timers.clear()
+        if (!active || matchMedia("(prefers-reduced-motion: reduce)").matches) {
+          setState("letters", [...target])
+          return
+        }
+
+        const starts = target.map(() => choices[Math.floor(Math.random() * choices.length)])
+        const settles = target.map(() => 6 + Math.floor(Math.random() * 8))
+        const last = Math.max(...settles)
+        setState("letters", starts)
+
+        Array.from({ length: last }, (_, index) => index + 1).forEach((tick) => {
+          const timer = setTimeout(() => {
+            setState(
+              "letters",
+              target.map((letter, index) =>
+                tick >= settles[index] ? letter : choices[Math.floor(Math.random() * choices.length)],
+              ),
+            )
+            timers.delete(timer)
+          }, tick * 75)
+          timers.add(timer)
+        })
+      },
+    ),
+  )
+
+  onCleanup(() => timers.forEach(clearTimeout))
+
+  return (
+    <svg class="settings-about-wordmark" viewBox="0 0 234 42" aria-hidden="true">
+      <defs>
+        <symbol id="settings-about-letter-o" viewBox="0 0 24 42">
+          <path class="settings-about-letter-shadow" d="M18 30H6V18H18V30Z" />
+          <path d="M18 12H6V30H18V12ZM24 36H0V6H24V36Z" />
+        </symbol>
+        <symbol id="settings-about-letter-p" viewBox="0 0 24 42">
+          <path class="settings-about-letter-shadow" d="M18 30H6V18H18V30Z" />
+          <path d="M6 30H18V12H6V30ZM24 36H6V42H0V6H24V36Z" />
+        </symbol>
+        <symbol id="settings-about-letter-e" viewBox="0 0 24 42">
+          <path class="settings-about-letter-shadow" d="M24 24V30H6V24H24Z" />
+          <path d="M24 24H6V30H24V36H0V6H24V24ZM6 18H18V12H6V18Z" />
+        </symbol>
+        <symbol id="settings-about-letter-n" viewBox="0 0 24 42">
+          <path class="settings-about-letter-shadow" d="M18 36H6V18H18V36Z" />
+          <path d="M18 12H6V36H0V6H18V12ZM24 36H18V12H24V36Z" />
+        </symbol>
+        <symbol id="settings-about-letter-c" viewBox="0 0 24 42">
+          <path class="settings-about-letter-shadow" d="M24 30H6V18H24V30Z" />
+          <path d="M24 12H6V30H24V36H0V6H24V12Z" />
+        </symbol>
+        <symbol id="settings-about-letter-d" viewBox="0 0 24 42">
+          <path class="settings-about-letter-shadow" d="M18 30H6V18H18V30Z" />
+          <path d="M18 12H6V30H18V12ZM24 36H0V6H18V0H24V36Z" />
+        </symbol>
+      </defs>
+      <For each={state.letters}>
+        {(letter, index) => (
+          <use href={`#settings-about-letter-${letter}`} x={index() * 30} width="24" height="42" />
+        )}
+      </For>
+    </svg>
+  )
+}

packages/app/src/settings/about/contributors.test.ts

@@ -0,0 +1,17 @@
+import { describe, expect, test } from "bun:test"
+import { FALLBACK_OTHER_CONTRIBUTORS, otherContributorCount } from "./contributors"
+
+describe("otherContributorCount", () => {
+  test("subtracts the contributors named in the colophon", () => {
+    expect(
+      otherContributorCount(
+        '<https://api.github.com/repositories/975734319/contributors?anon=1&per_page=1&page=2>; rel="next", <https://api.github.com/repositories/975734319/contributors?anon=1&per_page=1&page=1004>; rel="last"',
+      ),
+    ).toBe(988)
+  })
+
+  test("falls back when pagination metadata is unavailable", () => {
+    expect(otherContributorCount(null)).toBe(FALLBACK_OTHER_CONTRIBUTORS)
+    expect(otherContributorCount("invalid")).toBe(FALLBACK_OTHER_CONTRIBUTORS)
+  })
+})

packages/app/src/settings/about/contributors.ts

@@ -0,0 +1,23 @@
+const CREDITED_CONTRIBUTORS = 16
+let request: Promise<number> | undefined
+
+export const FALLBACK_OTHER_CONTRIBUTORS = 935
+
+export function otherContributorCount(link: string | null) {
+  const total = Number.parseInt(link?.match(/[?&]page=(\d+)[^>]*>;\s*rel="last"/)?.[1] ?? "", 10)
+  if (!Number.isFinite(total) || total <= CREDITED_CONTRIBUTORS) return FALLBACK_OTHER_CONTRIBUTORS
+  return total - CREDITED_CONTRIBUTORS
+}
+
+export function loadOtherContributorCount(fetcher: typeof fetch) {
+  request ??= fetcher("https://api.github.com/repos/anomalyco/opencode/contributors?anon=1&per_page=1", {
+    headers: {
+      Accept: "application/vnd.github+json",
+      "X-GitHub-Api-Version": "2022-11-28",
+    },
+  }).then(
+    (response) => (response.ok ? otherContributorCount(response.headers.get("Link")) : FALLBACK_OTHER_CONTRIBUTORS),
+    () => FALLBACK_OTHER_CONTRIBUTORS,
+  )
+  return request
+}

packages/app/src/settings/about/legal.svg

@@ -0,0 +1,9 @@
+<svg width="91" height="16" viewBox="0 0 91 16" fill="none" xmlns="http://www.w3.org/2000/svg">
+  <g opacity=".5" fill="#808080">
+    <path d="M22.463 16H11.231c6.203 0 11.232-3.582 11.232-8s-5.029-8-11.232-8S0 3.582 0 8s5.028 8 11.231 8H0V0h22.463v16Z"/>
+    <path d="M13.672 4.799h5.354v.988h-2.102v5.54h-1.158v-5.54h-2.094v-.988ZM11.724 4.799h1.158v6.528h-1.158V4.799ZM3.474 4.799h1.63l1.825 5.11h.018l1.779-5.11h1.612v6.528H9.235V6.289h-.018l-1.834 5.038h-.954L4.595 6.289h-.019v5.038H3.474V4.799Z"/>
+    <path fill-rule="evenodd" d="M50.363 1a7.363 7.363 0 1 1 0 14.726 7.363 7.363 0 0 1 0-14.726Zm-1.938 1.04a6.615 6.615 0 0 0-3.338 2.34c.483.014.783.079.783.37 0 .375.375.625 1.123-.625.543-.906 1.02-1.681 1.432-2.086Zm8.547 6.585h-2.241c-.999 0-1.123 1-1.623 1.75-.499.75-.748 1.5-.748 2.625s-.749 1.25-1.124 1.375c-.374.125-.623-.375-1.123-.75-.499-.375-.25-2.375-.25-2.75s0-.625-.374-.75c-.374-.125-1.997-.375-2.121-.75-.125-.375 0-.75.748-1.75.44-.625 1.123-.25 1.373-.25.25 0 .999.25 1.498.25.499 0 .624.25 1.373.25.748 0 .25-.25.25-1 0-.75-.5-.375-.999-.25-.499.125-.624.25-1.747.25s-.25-.375.25-.625c.498-.25.498-.25.873-.875.374-.625 0-.25-.624-.375-.624-.125-.25.375-.874.375s-.124-.625.375-1c.499-.375.374-.5.499-1.25.125-.75.25-.25.873-.5.624-.25.874 0 1.123-.25.088-.088.098-.191.092-.288a6.616 6.616 0 0 0-8.702 6.288A6.614 6.614 0 0 0 50.363 15c3.569 0 6.478-2.832 6.61-6.375Z" clip-rule="evenodd"/>
+    <path fill-rule="evenodd" d="M66.836 1a7.363 7.363 0 1 1 0 14.726 7.363 7.363 0 0 1 0-14.726Zm2.496 3.5c-.624 0-.999 1.125-1.623 1.75-.624.625-.499 1.375-.25 2.375.25 1-.623 1.625-1.372 1.625s-.874-.375-1.248-.75c-.375-.375-1.248-.375-2.247-.25-.998.125-.624 1.625-.748 2.375-.125.75-.624-.25-.749-1-.079-.475-.459-1-.822-1.417A6.614 6.614 0 0 0 66.836 15a6.59 6.59 0 0 0 2.518-.498c-.378-.049-.972-.333-1.395-.502-.624-.25-.874 0-1.622-.5-.749-.5-.25-.875-.25-1.875.25-.625.998-.25 1.373-.25h2.246c.874 0 .874 1.25.874 1.875 0 .604-.7.741-.86 1.088a6.625 6.625 0 0 0 2.489-9.827A8.822 8.822 0 0 0 71.952 4.5h-2.62Z" clip-rule="evenodd"/>
+    <path fill-rule="evenodd" d="M83.308 1a7.363 7.363 0 1 1 0 14.726 7.363 7.363 0 0 1 0-14.726Zm.656.782c-.752.31-.387 1.473.093 1.593.5.125.5-.625.874-.625s1.123.375 1.123.625-.25.375-.5.75c-.249.375.375.375 1.124 0 .748-.375.624.375.499 1.25s-.749 1-1.622 1h-1.498c-.328 0-.391 1.633-.25 1.75.141.117.345.375.5.375h1.871c.624 0 .749.25 1.248.375s.375.75.5 1.125c.124.375-.375.75-.75 1.25-.374.5-.748 1-.998 1.375-.25.375-.374.875-.374 1.375s-.375.5-.624.5c-.25 0-.374-.125-.374-.625s-.125-.625-.25-1.375c-.125-.75-.374-1.375-.374-1.75 0-.375-.25-.25-.669-.25s-.454-.125-.454-.75.809-.305.873-.75c.014-.097 0-.25 0-.25 0-.279-.25-.375-.419-.468-.17-.093-.598-.214-.704-.532-.125-.375-.5-.625-1.248-.625-.749 0-.998-.125-.998-.75V4.5c0-.875-.5-.5-1.498-.75.076-.114.282-.435.544-.868A6.614 6.614 0 1 0 83.964 1.782Z" clip-rule="evenodd"/>
+  </g>
+</svg>

packages/app/src/settings/settings.css

@@ -74,6 +74,102 @@
   user-select: none;
 }
 
+.settings-about {
+  align-items: center;
+  padding-inline: 24px;
+}
+
+.settings-about-content {
+  display: flex;
+  width: 100%;
+  max-width: 560px;
+  min-height: 462px;
+  flex-direction: column;
+  align-items: center;
+  justify-content: flex-start;
+  gap: 24px;
+  padding-block: 80px 32px;
+  color: var(--v2-text-text-muted);
+  font-size: 13px;
+  font-weight: 440;
+  line-height: var(--line-height-base);
+  letter-spacing: -0.04px;
+  text-align: center;
+}
+
+.settings-about-content p {
+  margin: 0;
+}
+
+.settings-about-intro,
+.settings-about-credits,
+.settings-about-publication,
+.settings-about-details {
+  display: flex;
+  flex-direction: column;
+}
+
+.settings-about-intro {
+  gap: 14px;
+}
+
+.settings-about-credits,
+.settings-about-publication,
+.settings-about-details {
+  gap: 16px;
+}
+
+.settings-about-wordmark {
+  width: 178px;
+  height: 32px;
+  flex-shrink: 0;
+  opacity: 0.2;
+  color: var(--v2-text-text-muted);
+  fill: currentColor;
+}
+
+.settings-about-letter-shadow {
+  opacity: 0.3;
+}
+
+.settings-about-faint,
+.settings-about-credits {
+  color: var(--v2-text-text-faint);
+}
+
+.settings-about-legal {
+  width: 109.2px;
+  height: 19.2px;
+}
+
+.settings-about-copyright {
+  display: flex;
+  width: 100%;
+  flex-shrink: 0;
+  flex-direction: column;
+  align-items: center;
+  gap: 12px;
+}
+
+.settings-about-anomaly-brush {
+  width: 126.72px;
+  height: 48.384px;
+  flex-shrink: 0;
+  pointer-events: none;
+}
+
+.settings-about-content a {
+  color: inherit;
+  cursor: pointer;
+  text-decoration: none;
+}
+
+.settings-about-content a:hover,
+.settings-about-content a:focus-visible {
+  color: var(--v2-text-text-base);
+  text-decoration: underline;
+}
+
 .settings-back {
   display: flex;
   height: 28px;

packages/app/src/settings/shell.tsx

@@ -13,6 +13,7 @@ import { SettingsServers } from "./servers/servers"
 import { SettingsWorkspaces } from "./workspaces/workspaces"
 import { SettingsProjects } from "./workspaces/projects"
 import { SettingsExtensions } from "./providers/extensions"
+import { SettingsAbout } from "./about/about"
 import { SettingsServerScope } from "./server-scope"
 import { useDialog } from "@opencode-ai/ui/context/dialog"
 import { useLayout } from "@/shell/state/layout"
@@ -161,6 +162,21 @@ export const SettingsScreen: Component<{
                   {language.t("settings.tab.extensions")}
                 </Tabs.Trigger>
               </div>
+
+              {/* Group 4: About */}
+              <div class="flex flex-col gap-1 w-full">
+                <Tabs.Trigger value="about">
+                  <svg data-slot="icon-svg" width="16" height="16" viewBox="0 0 16 16" fill="none" aria-hidden="true">
+                    <g transform="translate(2 2)">
+                      <path
+                        d="M12 12H0V0H12V12ZM1 1V11H11V1H1ZM6.5791 4.81641V9.37207H5.5791V5.81641H4.46777V4.81641H6.5791ZM6.85645 2.62891V3.62891H5.30078V2.62891H6.85645Z"
+                        fill="currentColor"
+                      />
+                    </g>
+                  </svg>
+                  {language.t("settings.tab.about")}
+                </Tabs.Trigger>
+              </div>
             </div>
           </div>
           <div class="settings-nav-footer">
@@ -203,6 +219,9 @@ export const SettingsScreen: Component<{
             <SettingsExtensions />
           </Tabs.Content>
         </SettingsServerScope>
+        <Tabs.Content value="about" class="settings-panel settings-about">
+          <SettingsAbout active={tab() === "about"} />
+        </Tabs.Content>
       </Tabs>
     </div>
   )

packages/app/src/shell/routes/session-ui-provider.tsx

@@ -1,5 +1,4 @@
 import { DataProvider } from "@opencode-ai/session-ui/context"
-import { MarkdownProvider, type ReadMarkdownImage } from "@opencode-ai/session-ui/context/markdown"
 import { useNavigate, useParams } from "@solidjs/router"
 import { createMemo, type ParentProps } from "solid-js"
 import { useProviders } from "@/providers/catalog/providers"
@@ -9,7 +8,6 @@ import { sessionHref } from "@/shell/routes/session"
 import { useData } from "@/runtime/server/current"
 import { useServerSDK } from "@/runtime/server/client"
 import { useTabs } from "@/shell/tabs/tabs"
-import { readLocalImage } from "@/runtime/server/image"
 
 export function SessionUIProvider(
   props: ParentProps<{
@@ -23,10 +21,6 @@ export function SessionUIProvider(
   const serverSDK = useServerSDK()
   const tabs = useTabs()
   const directory = () => props.directory
-  const readImage = createMemo<ReadMarkdownImage>(() => {
-    const dir = directory()
-    return (path, signal) => readLocalImage(serverSDK.api, dir, path, signal)
-  })
   const href = (sessionID: string) => sessionHref(props.server, sessionID)
   const navigateToSession = async (sessionID: string) => {
     const tab = tabs.store.find(
@@ -66,9 +60,7 @@ export function SessionUIProvider(
       onNavigateToSession={navigateToSession}
       onSessionHref={href}
     >
-      <MarkdownProvider readImage={readImage()}>
-        <LocalProvider>{props.children}</LocalProvider>
-      </MarkdownProvider>
+      <LocalProvider>{props.children}</LocalProvider>
     </DataProvider>
   )
 }

packages/app/test-browser/session-router.test.ts

@@ -1,85 +0,0 @@
-import { expect, test } from "bun:test"
-import { MemoryRouter, Route, createMemoryHistory, useNavigate, useParams } from "@solidjs/router"
-import { createEffect, onCleanup } from "solid-js"
-import { createComponent, render } from "solid-js/web"
-import { createSessionOwnership } from "@/session/session-ownership"
-
-test("session ownership follows navigation, back, forward, replacement, and route disposal", async () => {
-  const host = document.createElement("div")
-  const history = createMemoryHistory()
-  history.set({ value: "/session/A", replace: true, scroll: false })
-  const captured: ReturnType<ReturnType<typeof createSessionOwnership>["capture"]>[] = []
-  const navigate: ReturnType<typeof useNavigate>[] = []
-  const cleaned: string[] = []
-  const settle = () => new Promise((resolve) => setTimeout(resolve, 0))
-
-  const Session = () => {
-    const params = useParams<{ id: string }>()
-    const ownership = createSessionOwnership(() => params.id)
-    const label = document.createElement("div")
-    navigate.push(useNavigate())
-    createEffect(() => {
-      label.textContent = params.id
-      captured.push(ownership.capture())
-    })
-    onCleanup(() => cleaned.push("session"))
-    return label
-  }
-
-  const dispose = render(
-    () =>
-      createComponent(MemoryRouter, {
-        history,
-        get children() {
-          return [
-            createComponent(Route, { path: "/", component: () => "Home" }),
-            createComponent(Route, { path: "/session/:id", component: Session }),
-          ]
-        },
-      }),
-    host,
-  )
-
-  try {
-    expect(host.textContent).toBe("A")
-    expect(captured[0].current()).toBe(true)
-
-    navigate[0]("/session/B")
-    await settle()
-    expect(host.textContent).toBe("B")
-    expect(captured[0].current()).toBe(false)
-    expect(captured[1].current()).toBe(true)
-
-    history.back()
-    await settle()
-    expect(host.textContent).toBe("A")
-    expect(captured[0].current()).toBe(false)
-    expect(captured[1].current()).toBe(false)
-    expect(captured[2].current()).toBe(true)
-
-    history.forward()
-    await settle()
-    expect(host.textContent).toBe("B")
-    expect(captured[2].current()).toBe(false)
-    expect(captured[3].current()).toBe(true)
-    expect(navigate).toHaveLength(1)
-    expect(cleaned).toEqual([])
-
-    navigate[0]("/", { replace: true })
-    await settle()
-    expect(host.textContent).toBe("Home")
-    expect(captured.every((owner) => !owner.current())).toBe(true)
-    expect(cleaned).toEqual(["session"])
-
-    history.back()
-    await settle()
-    expect(host.textContent).toBe("A")
-    expect(captured[4].current()).toBe(true)
-    expect(navigate).toHaveLength(2)
-  } finally {
-    dispose()
-  }
-
-  expect(captured.every((owner) => !owner.current())).toBe(true)
-  expect(cleaned).toEqual(["session", "session"])
-})

packages/app/test-browser/solid-runtime.test.ts

@@ -1,89 +0,0 @@
-import { expect, test } from "bun:test"
-import {
-  createComputed,
-  createMemo,
-  createResource,
-  createRoot,
-  createSignal,
-  onCleanup,
-  startTransition,
-  Suspense,
-  type Accessor,
-  type JSX,
-} from "solid-js"
-import { createComponent, render } from "solid-js/web"
-
-// Solid 1.9.15 includes the former transition patch for solidjs/solid#2046.
-test("a memo created during a paused transition has a committed value", async () => {
-  const host = document.createElement("div")
-  const loaded = Promise.withResolvers<string>()
-  const started = Promise.withResolvers<void>()
-  const memos: Accessor<string>[] = []
-  const [session, setSession] = createSignal(false)
-  const dispose = render(
-    () =>
-      createComponent(Suspense, {
-        fallback: "Loading",
-        get children() {
-          return createMemo(() => {
-            if (!session()) return "Home"
-            memos.push(createMemo(() => "Session"))
-            const [data] = createResource(() => loaded.promise)
-            started.resolve()
-            return createMemo(() => data() ?? "")
-          }) as unknown as JSX.Element
-        },
-      }),
-    host,
-  )
-
-  try {
-    expect(host.textContent).toBe("Home")
-    const pending = startTransition(() => setSession(true))
-    await started.promise
-    expect(host.textContent).toBe("Home")
-    expect(memos).toHaveLength(1)
-    expect(memos[0]()).toBe("Session")
-
-    loaded.resolve("Session loaded")
-    await pending
-    expect(host.textContent).toBe("Session loaded")
-    expect(memos[0]()).toBe("Session")
-  } finally {
-    loaded.resolve("Session loaded")
-    dispose()
-  }
-})
-
-// Exercise each patched bundle independently; importing both dev formats emits Solid's duplicate-runtime warning.
-test.each(["solid.js", "solid.cjs", "dev.js", "dev.cjs", "server.js", "server.cjs"])(
-  "%s reentrant disposal cleans owned computations and callbacks exactly once",
-  async (file) => {
-    const runtime: {
-      createRoot: typeof createRoot
-      createComputed: typeof createComputed
-      onCleanup: typeof onCleanup
-    } = await import(`solid-js/dist/${file}`)
-    const cleaned: string[] = []
-    const dispose = runtime.createRoot((dispose) => {
-      runtime.onCleanup(() => cleaned.push("root"))
-      runtime.createComputed(() => {
-        runtime.onCleanup(() => cleaned.push("first"))
-      })
-      runtime.createComputed(() => {
-        runtime.onCleanup(() => cleaned.push("second"))
-        runtime.onCleanup(() => {
-          cleaned.push("reentrant")
-          // Bound the regression so an unpatched runtime fails without overflowing the stack.
-          if (cleaned.filter((item) => item === "reentrant").length === 1) dispose()
-        })
-      })
-      return dispose
-    })
-
-    expect(dispose).not.toThrow()
-    expect(cleaned.toSorted()).toEqual(["first", "reentrant", "root", "second"])
-    dispose()
-    expect(cleaned).toHaveLength(4)
-  },
-)

packages/app/vite.pwa.ts

@@ -10,8 +10,6 @@ export function serviceWorker(directory: string) {
     injectRegister: false,
     manifest: false,
     workbox: {
-      // Workbox runs after Sentry's upload and cleanup, so do not publish an unuploaded map.
-      sourcemap: false,
       globDirectory: directory,
       clientsClaim: false,
       // Keep each open tab on its complete build until all old clients close.

packages/cli/src/services/fixtures/updater.ts

@@ -0,0 +1,58 @@
+import { NodeFileSystem } from "@effect/platform-node"
+import { Global } from "@opencode-ai/util/global"
+import { AppProcess } from "@opencode-ai/util/process"
+import { Effect, FileSystem, Layer, Stream } from "effect"
+import { ChildProcessSpawner } from "effect/unstable/process"
+import assert from "node:assert/strict"
+import path from "node:path"
+import { Updater } from "../updater"
+
+const latest = { version: "0.0.0-beta-17498" }
+const installs: string[] = []
+
+// This fixture runs in its own process; no real update requests or installs occur.
+globalThis.fetch = Object.assign(async () => Response.json(latest), { preconnect() {} })
+
+await Effect.runPromise(
+  Effect.gen(function* () {
+    const fs = yield* FileSystem.FileSystem
+    const directory = yield* fs.makeTempDirectoryScoped({ prefix: "opencode-updater-" })
+    const dependencies = Layer.mergeAll(
+      Layer.succeed(FileSystem.FileSystem, fs),
+      Layer.succeed(
+        Global.Service,
+        Global.make({ home: directory, config: directory, cache: path.join(directory, "cache") }),
+      ),
+      Layer.succeed(AppProcess.Service, {
+        ...ChildProcessSpawner.make(() => Effect.die("Unexpected process spawn")),
+        runStream: () => Stream.die("Unexpected streaming process"),
+        run: (command) => {
+          assert.equal(command._tag, "StandardCommand")
+          if (command.command === "npm" && command.args[0] === "install") {
+            assert.ok(command.args.includes("--global"))
+            installs.push(command.args.at(-1)!)
+          }
+          return Effect.succeed({
+            command: command.command,
+            exitCode: 0,
+            stdout: Buffer.from(command.command === "npm" ? "@opencode-ai/cli" : ""),
+            stderr: Buffer.alloc(0),
+            stdoutTruncated: false,
+            stderrTruncated: false,
+          })
+        },
+      }),
+    )
+    yield* Effect.gen(function* () {
+      const updater = yield* Updater.Service
+      yield* updater.check()
+      assert.deepEqual(installs, ["@opencode-ai/cli@0.0.0-beta-17498"])
+      yield* updater.check()
+      yield* updater.check()
+      assert.deepEqual(installs, ["@opencode-ai/cli@0.0.0-beta-17498"])
+      latest.version = "0.0.0-beta-17499"
+      yield* updater.check()
+      assert.deepEqual(installs, ["@opencode-ai/cli@0.0.0-beta-17498", "@opencode-ai/cli@0.0.0-beta-17499"])
+    }).pipe(Effect.provide(Updater.layer.pipe(Layer.provide(dependencies))))
+  }).pipe(Effect.scoped, Effect.provide(NodeFileSystem.layer)),
+)

packages/cli/src/services/updater-action.ts

@@ -5,9 +5,9 @@ const maximumComponent = "9007199254740991"
 const versionPattern =
   /^v?([0-9]+)\.([0-9]+)\.([0-9]+)(?:-([0-9A-Za-z-]+(?:\.[0-9A-Za-z-]+)*))?(?:\+[0-9A-Za-z-]+(?:\.[0-9A-Za-z-]+)*)?$/
 
-export function action(current: string, latest: string, policy: Policy): Action {
+export function action(current: string, latest: string, policy: Policy, installed = current): Action {
   if (policy === false) return "none"
-  const currentVersion = parseReleaseVersion(current)
+  const currentVersion = parseReleaseVersion(installed)
   const latestVersion = parseReleaseVersion(latest)
   if (!currentVersion || !latestVersion || sameRelease(currentVersion, latestVersion)) return "none"
   // Major upgrades are never installed automatically.

packages/cli/src/services/updater.test.ts

@@ -1,8 +1,30 @@
 import { describe, expect, test } from "bun:test"
+import path from "node:path"
 import { action } from "./updater-action"
 import { decodePolicy } from "./updater"
 
 describe("updater", () => {
+  test("remembers successful installs across checks and accepts the next release", async () => {
+    // Isolate compiled version constants and the update endpoint from other tests.
+    const child = Bun.spawn(
+      [
+        process.execPath,
+        "--define",
+        'OPENCODE_VERSION="0.0.0-next-16473"',
+        "--define",
+        'OPENCODE_CHANNEL="beta"',
+        path.join(import.meta.dir, "fixtures/updater.ts"),
+      ],
+      { env: { ...process.env, OPENCODE_DISABLE_AUTOUPDATE: "" }, stdout: "pipe", stderr: "pipe" },
+    )
+    const [code, stdout, stderr] = await Promise.all([
+      child.exited,
+      new Response(child.stdout).text(),
+      new Response(child.stderr).text(),
+    ])
+    expect(code, stdout + stderr).toBe(0)
+  })
+
   test("reads autoupdate from JSONC", () => {
     expect(decodePolicy('{ // preference\n "autoupdate": "notify",\n}')).toBe("notify")
     expect(decodePolicy('{ "autoupdate": false }')).toBe(false)
@@ -32,6 +54,14 @@ describe("updater", () => {
     expect(action("1.2.3", "1.2.3", true)).toBe("none")
   })
 
+  test("skips an installed update but still accepts the next release", () => {
+    const current = "0.0.0-next-16473"
+    const installed = "0.0.0-beta-17498"
+    expect(action(current, installed, true)).toBe("upgrade")
+    expect(action(current, installed, true, installed)).toBe("none")
+    expect(action(current, "0.0.0-beta-17499", true, installed)).toBe("upgrade")
+  })
+
   test("upgrades when latest is lower (rollback)", () => {
     expect(action("1.2.4", "1.2.3", true)).toBe("upgrade")
   })

packages/cli/src/services/updater.ts

@@ -1,7 +1,7 @@
 import { Global } from "@opencode-ai/util/global"
 import { AppProcess } from "@opencode-ai/util/process"
 import { OPENCODE_CHANNEL, OPENCODE_LOCAL, OPENCODE_VERSION } from "../version"
-import { Context, Duration, Effect, FileSystem, Layer } from "effect"
+import { Context, Duration, Effect, FileSystem, Layer, Ref } from "effect"
 import { ChildProcess } from "effect/unstable/process"
 import { parse, type ParseError } from "jsonc-parser"
 import path from "node:path"
@@ -38,6 +38,7 @@ export const layer = Layer.effect(
     const fs = yield* FileSystem.FileSystem
     const global = yield* Global.Service
     const appProcess = yield* AppProcess.Service
+    const installed = yield* Ref.make(OPENCODE_VERSION)
     const channel = OPENCODE_CHANNEL.replace(/[^a-zA-Z0-9._-]/g, "-")
 
     const readPolicy = Effect.fnUntraced(function* () {
@@ -112,18 +113,20 @@ export const layer = Layer.effect(
 
     const upgrade = Effect.fnUntraced(function* (method: Method, version: string) {
       const target = `${packageName}@${version}`
-      const commands: Record<Exclude<Method, "bun" | "curl">, string[]> = {
-        npm: ["npm", "install", "--global", target],
+      const commands: Record<Exclude<Method, "bun" | "curl" | "npm">, string[]> = {
         pnpm: ["pnpm", "add", "--global", `--allow-build=${packageName}`, target],
         yarn: ["yarn", "global", "add", target],
       }
       const result = yield* Effect.scoped(
         Effect.gen(function* () {
-          if (method === "bun") {
-            // Bun does not prune old versions from its shared package cache.
+          if (method === "bun" || method === "npm") {
             yield* fs.makeDirectory(global.cache, { recursive: true })
             const cache = yield* fs.makeTempDirectoryScoped({ directory: global.cache, prefix: "update-" })
-            return yield* run(["bun", "install", "--global", "--trust", "--cache-dir", cache, target], "5 minutes")
+            const command =
+              method === "bun"
+                ? ["bun", "install", "--global", "--trust", "--cache-dir", cache, target]
+                : ["npm", "install", "--global", "--cache", cache, target]
+            return yield* run(command, "5 minutes")
           }
           if (method === "curl") {
             yield* fs.makeDirectory(global.cache, { recursive: true })
@@ -156,18 +159,19 @@ export const layer = Layer.effect(
 
         return yield* Effect.gen(function* () {
           const version = yield* latest()
+          const current = yield* Ref.get(installed)
           yield* Effect.logInfo("update check", {
-            current: OPENCODE_VERSION,
+            current,
             latest: version,
           })
-          const next = action(OPENCODE_VERSION, version, policy)
+          const next = action(OPENCODE_VERSION, version, policy, current)
           if (next === "none") return yield* Effect.logInfo("update check done", { action: "up-to-date" })
-          if (next === "notify")
-            return yield* Effect.logInfo("OpenCode update available", { current: OPENCODE_VERSION, latest: version })
+          if (next === "notify") return yield* Effect.logInfo("OpenCode update available", { current, latest: version })
           const detected = yield* method()
           if (!detected) return yield* Effect.logWarning("automatic update skipped: installation method not found")
           yield* upgrade(detected, version)
-          yield* Effect.logInfo("updated OpenCode", { from: OPENCODE_VERSION, to: version, method: detected })
+          yield* Ref.set(installed, version)
+          yield* Effect.logInfo("updated OpenCode", { from: current, to: version, method: detected })
         })
       },
       Effect.catchCause((cause) => Effect.logWarning("automatic update failed", { cause })),

packages/client/package.json

@@ -37,7 +37,7 @@
     "@opencode-ai/protocol": "workspace:*"
   },
   "peerDependencies": {
-    "effect": "4.0.0-rc.112",
+    "effect": "4.0.0-rc.111",
     "solid-js": ">=1.9.0"
   },
   "peerDependenciesMeta": {

packages/client/src/effect/api/api.ts

@@ -183,7 +183,6 @@ export type SessionCreateInput = {
   readonly agent?: Agent.ID | undefined
   readonly model?: Model.Ref | undefined
   readonly location?: Location.Ref | undefined
-  readonly metadata?: Session.Metadata | undefined
 }
 export type SessionCreateOutput = Session.Info
 export type SessionCreateOperation<E = never> = (input?: SessionCreateInput) => Effect.Effect<SessionCreateOutput, E>
@@ -411,7 +410,6 @@ export type SessionLogOutput =
             readonly title?: string | undefined
             readonly agent?: Agent.ID | undefined
             readonly model?: Model.Ref | undefined
-            readonly metadata?: Session.Metadata | undefined
             readonly version: string
           }
         }
@@ -1639,23 +1637,6 @@ export interface PtyApi<E = never> {
   readonly connect: { readonly token: PtyConnectTokenOperation<E> }
 }
 
-export type ExperimentalPersistentPtyReadInput = { readonly sessionID: Session.ID; readonly lines?: number | undefined }
-export type ExperimentalPersistentPtyReadOutput = {
-  readonly ptyID: Pty.ID
-  readonly title: string
-  readonly cwd: string
-  readonly foregroundProcess: string | null
-  readonly screen: {
-    readonly text: string
-    readonly cols: number
-    readonly rows: number
-    readonly cursor: { readonly x: number; readonly y: number }
-  }
-} | null
-export type ExperimentalPersistentPtyReadOperation<E = never> = (
-  input: ExperimentalPersistentPtyReadInput,
-) => Effect.Effect<ExperimentalPersistentPtyReadOutput, E>
-
 export type ExperimentalPersistentPtyListInput = { readonly sessionID: Session.ID }
 export type ExperimentalPersistentPtyListOutput = ReadonlyArray<{
   readonly id: Pty.ID
@@ -1804,7 +1785,6 @@ export type ExperimentalPersistentPtyConnectTokenOperation<E = never> = (
 
 export interface ExperimentalApi<E = never> {
   readonly persistentPty: {
-    readonly read: ExperimentalPersistentPtyReadOperation<E>
     readonly list: ExperimentalPersistentPtyListOperation<E>
     readonly create: ExperimentalPersistentPtyCreateOperation<E>
     readonly shutdown: ExperimentalPersistentPtyShutdownOperation<E>

packages/client/src/effect/generated/client.ts

@@ -198,8 +198,6 @@ import type {
   PtyRemoveOutput,
   PtyConnectTokenInput,
   PtyConnectTokenOutput,
-  ExperimentalPersistentPtyReadInput,
-  ExperimentalPersistentPtyReadOutput,
   ExperimentalPersistentPtyListInput,
   ExperimentalPersistentPtyListOutput,
   ExperimentalPersistentPtyCreateInput,
@@ -362,7 +360,6 @@ const EndpointSessionCreate = (raw: RawClient["server.session"]) => (input?: Ses
         agent: input?.["agent"],
         model: input?.["model"],
         location: input?.["location"],
-        metadata: input?.["metadata"],
       },
     }).pipe(
       Effect.mapError(mapClientError),
@@ -1236,15 +1233,6 @@ const adaptGroupPty = (raw: RawClient["server.pty"]) => ({
   connect: { token: EndpointPtyConnectToken(raw) },
 })
 
-const EndpointExperimentalPersistentPtyRead =
-  (raw: RawClient["server.experimental"]) => (input: ExperimentalPersistentPtyReadInput) =>
-    preserveEffect<ExperimentalPersistentPtyReadOutput>()(
-      raw["persistentPty.read"]({ params: { sessionID: input["sessionID"] }, query: { lines: input["lines"] } }).pipe(
-        Effect.mapError(mapClientError),
-        Effect.map((value) => value.data),
-      ),
-    )
-
 const EndpointExperimentalPersistentPtyList =
   (raw: RawClient["server.experimental"]) => (input: ExperimentalPersistentPtyListInput) =>
     preserveEffect<ExperimentalPersistentPtyListOutput>()(
@@ -1333,7 +1321,6 @@ const EndpointExperimentalPersistentPtyConnectToken =
 
 const adaptGroupExperimental = (raw: RawClient["server.experimental"]) => ({
   persistentPty: {
-    read: EndpointExperimentalPersistentPtyRead(raw),
     list: EndpointExperimentalPersistentPtyList(raw),
     create: EndpointExperimentalPersistentPtyCreate(raw),
     shutdown: EndpointExperimentalPersistentPtyShutdown(raw),

packages/client/src/promise/generated/client.ts

@@ -194,8 +194,6 @@ import type {
   PtyRemoveOutput,
   PtyConnectTokenInput,
   PtyConnectTokenOutput,
-  ExperimentalPersistentPtyReadInput,
-  ExperimentalPersistentPtyReadOutput,
   ExperimentalPersistentPtyListInput,
   ExperimentalPersistentPtyListOutput,
   ExperimentalPersistentPtyCreateInput,
@@ -515,7 +513,6 @@ export function make(options: ClientOptions) {
               agent: input?.["agent"],
               model: input?.["model"],
               location: input?.["location"],
-              metadata: input?.["metadata"],
             },
             successStatus: 200,
             declaredStatuses: [401, 400],
@@ -1686,18 +1683,6 @@ export function make(options: ClientOptions) {
     },
     experimental: {
       persistentPty: {
-        read: (input: ExperimentalPersistentPtyReadInput, requestOptions?: RequestOptions) =>
-          request<{ readonly data: ExperimentalPersistentPtyReadOutput }>(
-            {
-              method: "GET",
-              path: `/api/experimental/session/${encodeURIComponent(input.sessionID)}/terminal/read`,
-              query: { lines: input["lines"] },
-              successStatus: 200,
-              declaredStatuses: [503, 401, 400],
-              empty: false,
-            },
-            requestOptions,
-          ).then((value) => value.data),
         list: (input: ExperimentalPersistentPtyListInput, requestOptions?: RequestOptions) =>
           request<{ readonly data: ExperimentalPersistentPtyListOutput }>(
             {

packages/client/src/promise/generated/types.ts

@@ -29,8 +29,6 @@ export type TokenUsageInfo = {
 
 export type LocationRef = { directory: string; workspaceID?: string }
 
-export type SessionMetadata = { [x: string]: JsonValue }
-
 export type FileDiffInfo = {
   file: string
   patch: string
@@ -378,14 +376,6 @@ export type SessionStatus =
 
 export type PtyTicketConnectToken = { ticket: string; expires_in: number }
 
-export type PersistentPtyReadResult = {
-  ptyID: string
-  title: string
-  cwd: string
-  foregroundProcess: string | null
-  screen: { text: string; cols: number; rows: number; cursor: { x: number; y: number } }
-}
-
 export type PersistentPtyHandoff = { directory: string; instanceID: string; ticket: string; expiresAt: number }
 
 export type ShellInfo1 = {
@@ -558,7 +548,6 @@ export type SessionCreated = {
     title?: string
     agent?: string
     model?: ModelRef
-    metadata?: SessionMetadata
     version: string
   }
 }
@@ -1653,7 +1642,6 @@ export type SessionInfo = {
   title?: string
   location: LocationRef
   subpath?: string
-  metadata?: SessionMetadata
   revert?: SessionRevert
 }
 
@@ -2699,7 +2687,6 @@ export type SessionCreateInput = {
     readonly agent?: string | null
     readonly model?: { readonly id: string; readonly providerID: string; readonly variant?: string } | null
     readonly location?: { readonly directory: string; readonly workspaceID?: string } | null
-    readonly metadata?: { readonly [x: string]: JsonValue } | null
   }["id"]
   readonly title?: {
     readonly id?: string | null
@@ -2707,7 +2694,6 @@ export type SessionCreateInput = {
     readonly agent?: string | null
     readonly model?: { readonly id: string; readonly providerID: string; readonly variant?: string } | null
     readonly location?: { readonly directory: string; readonly workspaceID?: string } | null
-    readonly metadata?: { readonly [x: string]: JsonValue } | null
   }["title"]
   readonly agent?: {
     readonly id?: string | null
@@ -2715,7 +2701,6 @@ export type SessionCreateInput = {
     readonly agent?: string | null
     readonly model?: { readonly id: string; readonly providerID: string; readonly variant?: string } | null
     readonly location?: { readonly directory: string; readonly workspaceID?: string } | null
-    readonly metadata?: { readonly [x: string]: JsonValue } | null
   }["agent"]
   readonly model?: {
     readonly id?: string | null
@@ -2723,7 +2708,6 @@ export type SessionCreateInput = {
     readonly agent?: string | null
     readonly model?: { readonly id: string; readonly providerID: string; readonly variant?: string } | null
     readonly location?: { readonly directory: string; readonly workspaceID?: string } | null
-    readonly metadata?: { readonly [x: string]: JsonValue } | null
   }["model"]
   readonly location?: {
     readonly id?: string | null
@@ -2731,16 +2715,7 @@ export type SessionCreateInput = {
     readonly agent?: string | null
     readonly model?: { readonly id: string; readonly providerID: string; readonly variant?: string } | null
     readonly location?: { readonly directory: string; readonly workspaceID?: string } | null
-    readonly metadata?: { readonly [x: string]: JsonValue } | null
   }["location"]
-  readonly metadata?: {
-    readonly id?: string | null
-    readonly title?: string | null
-    readonly agent?: string | null
-    readonly model?: { readonly id: string; readonly providerID: string; readonly variant?: string } | null
-    readonly location?: { readonly directory: string; readonly workspaceID?: string } | null
-    readonly metadata?: { readonly [x: string]: JsonValue } | null
-  }["metadata"]
 }
 
 export type SessionCreateOutput = { data: SessionInfo }["data"]
@@ -2777,7 +2752,6 @@ export type SessionImportInput = {
       readonly title?: string
       readonly location: { readonly directory: string; readonly workspaceID?: string }
       readonly subpath?: string
-      readonly metadata?: { readonly [x: string]: JsonValue }
       readonly revert?: {
         readonly messageID: string
         readonly partID?: string
@@ -3054,7 +3028,6 @@ export type SessionImportInput = {
       readonly title?: string
       readonly location: { readonly directory: string; readonly workspaceID?: string }
       readonly subpath?: string
-      readonly metadata?: { readonly [x: string]: JsonValue }
       readonly revert?: {
         readonly messageID: string
         readonly partID?: string
@@ -3331,7 +3304,6 @@ export type SessionImportInput = {
       readonly title?: string
       readonly location: { readonly directory: string; readonly workspaceID?: string }
       readonly subpath?: string
-      readonly metadata?: { readonly [x: string]: JsonValue }
       readonly revert?: {
         readonly messageID: string
         readonly partID?: string
@@ -5777,13 +5749,6 @@ export type PtyConnectTokenOutput = {
   data: PtyTicketConnectToken
 }
 
-export type ExperimentalPersistentPtyReadInput = {
-  readonly sessionID: { readonly sessionID: string }["sessionID"]
-  readonly lines?: { readonly lines?: number | undefined }["lines"]
-}
-
-export type ExperimentalPersistentPtyReadOutput = { data: PersistentPtyReadResult | null }["data"]
-
 export type ExperimentalPersistentPtyListInput = { readonly sessionID: { readonly sessionID: string }["sessionID"] }
 
 export type ExperimentalPersistentPtyListOutput = { data: Array<PersistentPtyInfo> }["data"]

packages/client/src/solid/data.ts

@@ -215,10 +215,8 @@ export function createData(config: CreateDataInput) {
   )
   const messageIndex = new Map<string, Map<string, number>>()
   const sync = createSync()
-  let activeUpdates: Map<string, DataSessionStatus | undefined> | undefined
 
   function setSessionActive(sessionID: string, status: DataSessionStatus) {
-    activeUpdates?.set(sessionID, status)
     setStore("session", "active", sessionID, status)
   }
 
@@ -475,7 +473,6 @@ export function createData(config: CreateDataInput) {
   }
 
   function removeSession(sessionID: string) {
-    activeUpdates?.set(sessionID, undefined)
     store.session.pending[sessionID]?.forEach((item) => outbox.delete(item.id))
     messageIndex.delete(sessionID)
     sync.invalidate(`session:${sessionID}`)
@@ -507,25 +504,17 @@ export function createData(config: CreateDataInput) {
 
   function handleEvent(event: OpenCodeEvent) {
     switch (event.type) {
-      case "server.connected": {
-        const updates = new Map<string, DataSessionStatus | undefined>()
-        activeUpdates = updates
+      case "server.connected":
         void api()
           .session.active()
           .then((active) => {
-            if (activeUpdates !== updates) return
-            // Lifecycle events received during hydration supersede the snapshot.
-            const snapshot = new Map<string, DataSessionStatus>(Object.keys(active).map((id) => [id, "running"]))
-            updates.forEach((status, id) => {
-              if (status === undefined) return snapshot.delete(id)
-              snapshot.set(id, status)
-            })
-            activeUpdates = undefined
-            setStore("session", "active", reconcile(Object.fromEntries(snapshot)))
-          })
-          .catch(() => {
-            if (activeUpdates === updates) activeUpdates = undefined
+            setStore(
+              "session",
+              "active",
+              reconcile(Object.fromEntries(Object.keys(active).map((sessionID) => [sessionID, "running" as const]))),
+            )
           })
+          .catch(() => undefined)
         void api()
           .location.get({ location: locationQuery(defaultLocation()) })
           .then((location) => {
@@ -536,7 +525,6 @@ export function createData(config: CreateDataInput) {
         void result.location.vcs.sync().catch((error) => console.error("Failed to preload VCS info", error))
         void result.project.sync().catch((error) => console.error("Failed to preload projects", error))
         return
-      }
       case "project.updated":
         setStore("project", "info", event.data.id, reconcile(event.data))
         return

packages/client/test/promise.test.ts

@@ -50,8 +50,6 @@ test("exposes every standard HTTP API group", () => {
   expect(Object.keys(client.vcs)).toEqual(["get", "status", "branches", "diff"])
   expect(Object.keys(client.pty)).toEqual(["list", "create", "get", "update", "remove", "connect"])
   expect(Object.keys(client.pty.connect)).toEqual(["token"])
-  expect(Object.keys(client.experimental)).toEqual(["persistentPty"])
-  expect(client.experimental.persistentPty.read).toBeFunction()
   expect(Object.keys(client.shell)).toEqual(["list", "create", "get", "timeout", "output", "remove"])
   expect(Object.keys(client.project)).toEqual(["list", "update", "current"])
   expect(Object.keys(client.worktree)).toEqual(["list", "create", "remove", "refresh"])

packages/client/test/solid-data.test.ts

@@ -485,102 +485,6 @@ test("preserves assistant content replacement events across an active message re
   }
 })
 
-test.each([
-  "session.execution.succeeded",
-  "session.execution.failed",
-  "session.execution.interrupted",
-  "session.execution.started",
-  "session.deleted",
-] as const)("preserves %s activity when an older snapshot arrives", async (type) => {
-  const release = Promise.withResolvers<void>()
-  const requested = Promise.withResolvers<void>()
-  const setup = activityFixture(async () => {
-    requested.resolve()
-    await release.promise
-    return Response.json({
-      data: {
-        ...(type === "session.execution.started" ? {} : { ses_refresh: { type: "running" } }),
-        ses_hydrated: { type: "running" },
-      },
-    })
-  })
-
-  try {
-    if (type !== "session.execution.started") setup.data.session.setStatus("ses_refresh", "running")
-    setup.emit({ type: "server.connected", data: {} })
-    await requested.promise
-    setup.emit({
-      id: "evt_activity",
-      created: 2,
-      type,
-      durable: { aggregateID: "ses_refresh", seq: 2, version: 1 },
-      data: { sessionID: "ses_refresh", reason: "user" },
-    })
-    expect(setup.data.session.status("ses_refresh")).toBe(type === "session.execution.started" ? "running" : "idle")
-    release.resolve()
-    await wait(() => setup.data.session.status("ses_hydrated") === "running")
-    expect(setup.data.session.status("ses_refresh")).toBe(type === "session.execution.started" ? "running" : "idle")
-  } finally {
-    release.resolve()
-    setup.dispose()
-  }
-})
-
-test("ignores activity snapshots from an older connection", async () => {
-  const reads: ReturnType<typeof Promise.withResolvers<Response>>[] = []
-  const setup = activityFixture(() => {
-    const read = Promise.withResolvers<Response>()
-    reads.push(read)
-    return read.promise
-  })
-
-  try {
-    setup.emit({ type: "server.connected", data: {} })
-    await wait(() => reads.length === 1)
-    setup.emit({ type: "server.connected", data: {} })
-    await wait(() => reads.length === 2)
-    reads[1]?.resolve(Response.json({ data: { ses_new: { type: "running" } } }))
-    await wait(() => setup.data.session.status("ses_new") === "running")
-    reads[0]?.resolve(Response.json({ data: { ses_old: { type: "running" } } }))
-    await Bun.sleep(20)
-    expect(setup.data.session.status("ses_new")).toBe("running")
-    expect(setup.data.session.status("ses_old")).toBe("idle")
-  } finally {
-    reads.forEach((read) => read.resolve(Response.json({ data: {} })))
-    setup.dispose()
-  }
-})
-
-function activityFixture(read: () => Response | Promise<Response>) {
-  const listeners = new Set<Parameters<CreateDataInput["event"]["listen"]>[0]>()
-  const api = OpenCode.make({
-    baseUrl: "http://opencode.local",
-    fetch: async (input, init) => {
-      const request = input instanceof Request ? input : new Request(input, init)
-      const path = new URL(request.url).pathname
-      if (path === "/api/session/active") return read()
-      if (path === "/api/project") return Response.json([])
-      if (path === "/api/location") return Response.json({ directory: "/project" })
-      return Response.json({ location: { directory: "/project" }, data: { branch: "main" } })
-    },
-  })
-  return createRoot((dispose) => ({
-    data: createData({
-      api: () => api,
-      directory: "/project",
-      event: {
-        on: () => () => {},
-        listen(handler) {
-          listeners.add(handler)
-          return () => listeners.delete(handler)
-        },
-      },
-    }),
-    emit: (details: OpenCodeEvent) => listeners.forEach((listener) => listener({ name: details.type, details })),
-    dispose,
-  }))
-}
-
 async function wait(check: () => boolean) {
   const started = Date.now()
   while (!check()) {

packages/codemode/AGENTS.md

@@ -19,7 +19,7 @@
 
 - If a captured user-visible output channel returns (an earlier `output.text`/`output.file`/`output.image` API was removed from v1), keep `output` as its name, distinct from the program return value: `return` stays the structured result for the model, while `output.*` describes artifacts the host may render into a conversation or UI after execution. Keep this host-neutral and let applications decide how captured output is delivered. In v1, hosts collect media host-side (outside CodeMode) instead.
 - Improve the failure taxonomy. Distinguish parse/compile mistakes, unsupported syntax, user-thrown errors, invalid returned data, tool refusal, tool internal failure, timeout, and genuine runtime defects so agents can recover accurately instead of treating everything as a generic execution failure.
-- Report host failure messages and underlying causes rather than replacing them with generic diagnostics. Preserve interruption behavior.
+- Preserve the public/private error split. Tool authors should be able to return a safe model-visible message while retaining a private cause for host diagnostics. Unknown host failures must remain sanitized by default.
 - Think deliberately about richer binary boundaries before allowing `Blob`, `File`, `ArrayBuffer`, streams, or typed arrays beyond today's JSON-like values. If CodeMode supports binary tool args/results, use explicit tagged data shapes and clear size limits rather than relying on ambient runtime serialization.
 - Keep host capabilities explicit. Globals such as `fetch`, `crypto`, filesystem handles, extra modules, or network clients should be opt-in runtime capabilities with obvious policy defaults, not ambient authority. Default to unavailable unless a host deliberately provides the capability.
 - If `fetch` is added, model it as a host-provided outbound capability with policy controls: allowed origins, methods, headers, response size, timeout, and whether response bodies may be returned, emitted, or only summarized through a tool.

packages/codemode/README.md

@@ -139,8 +139,8 @@ Diagnostic kinds:
 | `ExecutionFailure`      | The program threw or another execution error occurred.                                         |
 | `Truncated`             | Warning only: additional warnings were omitted by `maxOutputBytes`.                            |
 
-Host failures and defects report their messages and underlying causes. Invalid outputs include the validation or
-copying error. Interruption propagates without becoming an error diagnostic.
+Unknown host failures, defects, and invalid outputs are sanitized. `toolError("safe message")` explicitly exposes a
+safe refusal to the model; its optional cause remains private.
 
 ## Discovery
 

packages/codemode/interpreter-support.md

@@ -365,7 +365,7 @@ ultimate source of truth.
       `catch`.
 - [x] Source locations on unsupported-syntax diagnostics for JavaScript-shaped input; TypeScript transpilation may
       shift them.
-- [x] Model-visible host failure messages and underlying causes, including output-validation errors.
-- [ ] Distinguish user-thrown failures from interpreter defects and explicit tool refusals from internal tool
+- [x] Sanitized model-visible diagnostics and explicit safe `ToolError` messages.
+- [ ] Distinguish user-thrown failures from interpreter defects and explicit tool refusals from sanitized internal tool
       failures; preserve those categories in caught errors, promise rejection handlers, and `Promise.allSettled`
       reasons.

packages/codemode/src/tool-error.ts

@@ -1,11 +1,11 @@
 import { Schema } from "effect"
 
-/** Tool failure reported as `ToolFailure`. */
+/** Safe operational refusal from a standard tool pack, reported as `ToolFailure`. */
 export class ToolError extends Schema.TaggedError<ToolError>()("ToolError", {
   message: Schema.String,
   cause: Schema.optionalKey(Schema.Defect()),
 }) {}
 
-/** Creates a tool failure with an optional underlying cause. */
+/** Creates a tool refusal whose message is safe to include in an execution diagnostic. */
 export const toolError = (message: string, cause?: unknown): ToolError =>
   new ToolError({ message, ...(cause === undefined ? {} : { cause }) })

packages/codemode/src/tool-runtime.ts

@@ -1,5 +1,5 @@
-import { Cause, Effect, Exit, Formatter, Schema } from "effect"
-import { toolError } from "./tool-error.js"
+import { Cause, Effect, Exit, Schema } from "effect"
+import { ToolError, toolError } from "./tool-error.js"
 import {
   decodeInput as decodeToolInput,
   decodeOutput as decodeToolOutput,
@@ -117,6 +117,15 @@ export class ToolRuntimeError extends Error {
   }
 }
 
+const runHost = <A, E, R>(effect: Effect.Effect<A, E, R>): Effect.Effect<A, ToolError, R> =>
+  effect.pipe(
+    Effect.catchCause((cause) => {
+      if (Cause.hasInterruptsOnly(cause)) return Effect.interrupt
+      const error = Cause.squash(cause)
+      return Effect.fail(error instanceof ToolError ? error : toolError("Tool execution failed", error))
+    }),
+  )
+
 const blockedMemberNames = new Set(["__proto__", "constructor", "prototype"])
 
 export const isBlockedMember = (name: string): boolean => blockedMemberNames.has(name)
@@ -498,12 +507,19 @@ export const make = <R>(
         if (Exit.isSuccess(exit)) return onEnd({ ...call, durationMs, outcome: "success" })
         if (Cause.hasInterruptsOnly(exit.cause)) return onEnd({ ...call, durationMs, outcome: "interrupted" })
         const error = Cause.squash(exit.cause)
-        const message = error instanceof Error ? error.message : Cause.pretty(exit.cause)
+        const message =
+          error instanceof ToolError || error instanceof ToolRuntimeError ? error.message : "Tool execution failed"
         return onEnd({ ...call, durationMs, outcome: "failure", message })
       }),
     )
   }
 
+  const decodeOutput = (value: unknown, name: string) =>
+    Effect.try({
+      try: () => copyIn(value, `Result from tool '${name}'`),
+      catch: () => new ToolRuntimeError("InvalidToolOutput", `Invalid output from tool '${name}'.`),
+    })
+
   const recordCall = (call: ToolCall): void => {
     if (maxToolCalls !== undefined && calls.length >= maxToolCalls) {
       throw new ToolRuntimeError("ToolCallLimitExceeded", `Execution exceeded its tool-call limit of ${maxToolCalls}.`)
@@ -532,22 +548,12 @@ export const make = <R>(
       return yield* observeEnd(
         Effect.gen(function* () {
           if (hooks?.onToolCallStart !== undefined) yield* hooks.onToolCallStart(call)
-          const raw = yield* Effect.suspend(() => tool.execute(input)).pipe(
-            Effect.catchCause((cause) => {
-              if (Cause.hasInterruptsOnly(cause)) return Effect.interrupt
-              return Effect.fail(
-                toolError(
-                  Cause.prettyErrors(cause)
-                    .map((error) => (error.cause ? Formatter.format(error) : error.message || error.name))
-                    .join("\n"),
-                ),
-              )
-            }),
-          )
-          return yield* Effect.try({
-            try: () => copyIn(decodeToolOutput(tool, raw), `Result from tool '${name}'`),
-            catch: (cause) => new ToolRuntimeError("InvalidToolOutput", `Invalid output from tool '${name}': ${cause}`),
+          const raw = yield* runHost(Effect.suspend(() => tool.execute(input)))
+          const result = yield* Effect.try({
+            try: () => decodeToolOutput(tool, raw),
+            catch: () => new ToolRuntimeError("InvalidToolOutput", `Invalid output from tool '${name}'.`),
           })
+          return yield* decodeOutput(result, name)
         }),
         call,
       )

packages/codemode/test/codemode.test.ts

@@ -5,15 +5,15 @@ import { CodeMode, Tool, toolError } from "../src/index.js"
 const run = (tool: Tool.Tool<never>) =>
   Effect.runPromise(CodeMode.make({ tools: { host: { call: tool } } }).execute("return await tools.host.call({})"))
 
-class HostError extends Schema.TaggedError<HostError>()("HostError", {
-  message: Schema.String,
+class UnsafeHostError extends Schema.TaggedError<UnsafeHostError>()("UnsafeHostError", {
+  reason: Schema.String,
 }) {}
 
 describe("CodeMode host failure boundary", () => {
-  test("preserves explicit tool failures", async () => {
+  test("preserves explicit safe tool failures", async () => {
     const result = await run(
       Tool.make({
-        description: "Fail",
+        description: "Fail safely",
         input: Schema.Struct({}),
         output: Schema.String,
         execute: () => Effect.fail(toolError("Authorized request was refused")),
@@ -26,10 +26,10 @@ describe("CodeMode host failure boundary", () => {
     })
   })
 
-  test("does not rewrite explicit tool failures", async () => {
+  test("does not rewrite explicit safe tool failures", async () => {
     const result = await run(
       Tool.make({
-        description: "Fail",
+        description: "Fail safely",
         input: Schema.Struct({}),
         output: Schema.String,
         execute: () => Effect.fail(toolError("File not found: /tmp/report.json")),
@@ -42,15 +42,10 @@ describe("CodeMode host failure boundary", () => {
     })
   })
 
-  test("reports failures, defects, rejected Promises, and nested causes", async () => {
+  test("sanitizes unknown host failures and defects", async () => {
     for (const failure of [
-      Effect.fail(new HostError({ message: "Connection refused" })),
-      Effect.die(new Error("Connection refused")),
-      Effect.promise(async () => {
-        throw new Error("Connection refused")
-      }),
-      Effect.fail(toolError("Request failed", new Error("Connection refused"))),
-      Effect.failCause(Cause.combine(Cause.fail("Request failed"), Cause.die("Connection refused"))),
+      Effect.fail(new UnsafeHostError({ reason: "Authorization: Bearer typed-secret" })),
+      Effect.die(new Error("postgres://user:defect-secret@example.invalid")),
     ]) {
       const result = await run(
         Tool.make({
@@ -63,28 +58,31 @@ describe("CodeMode host failure boundary", () => {
 
       expect(result.ok ? undefined : result.error).toStrictEqual({
         kind: "ToolFailure",
-        message: expect.stringContaining("Connection refused"),
+        message: "Tool execution failed",
       })
+      expect(JSON.stringify(result)).not.toMatch(/typed-secret|defect-secret|Authorization: Bearer/)
     }
   })
 
-  test("reports invalid host output", async () => {
+  test("sanitizes invalid host output", async () => {
+    const secret = "invalid-output-secret"
     const result = await run(
       Tool.make({
         description: "Return invalid output",
         input: Schema.Struct({}),
-        output: Schema.Struct({ value: Schema.String }),
-        execute: () => Effect.succeed({ value: 1 } as unknown as { readonly value: string }),
+        output: Schema.Struct({ safe: Schema.String }),
+        execute: () => Effect.succeed({ safe: 1, secret } as unknown as { readonly safe: string }),
       }),
     )
 
     expect(result.ok ? undefined : result.error).toStrictEqual({
       kind: "InvalidToolOutput",
-      message: "Invalid output from tool 'host.call': SchemaError(Expected string\n  at [\"value\"])",
+      message: "Invalid output from tool 'host.call'.",
     })
+    expect(JSON.stringify(result)).not.toMatch(/invalid-output-secret/)
   })
 
-  test("reports host output copying errors", async () => {
+  test("sanitizes host output that throws while being copied", async () => {
     const result = await run(
       Tool.make({
         description: "Return hostile output",
@@ -96,7 +94,7 @@ describe("CodeMode host failure boundary", () => {
               {},
               {
                 ownKeys: () => {
-                  throw new Error("Cannot enumerate output")
+                  throw new Error("host-output-secret")
                 },
               },
             ),
@@ -106,8 +104,9 @@ describe("CodeMode host failure boundary", () => {
 
     expect(result.ok ? undefined : result.error).toStrictEqual({
       kind: "InvalidToolOutput",
-      message: "Invalid output from tool 'host.call': Error: Cannot enumerate output",
+      message: "Invalid output from tool 'host.call'.",
     })
+    expect(JSON.stringify(result)).not.toMatch(/host-output-secret/)
   })
 
   test("caught tool failures are Error values in-program", async () => {
@@ -230,7 +229,7 @@ describe("CodeMode tool-call observation", () => {
       { phase: "start", index: 0, name: "context.lookup" },
       { phase: "end", index: 0, name: "context.lookup", outcome: "failure", message: "Lookup refused" },
       { phase: "start", index: 0, name: "context.lookup" },
-      { phase: "end", index: 0, name: "context.lookup", outcome: "failure", message: "broken" },
+      { phase: "end", index: 0, name: "context.lookup", outcome: "failure", message: "Tool execution failed" },
     ])
   })