chore(main): release 0.68.0 (#1000 )

🤖 I have created a release *beep* *boop* --- ## [0.68.0](https://github.com/agentclientprotocol/claude-agent-acp/compare/v0.67.0...v0.68.0) (2026-08-14) ### Features * align typed session failures with AIR protocol ([#992](https://github.com/agentclientprotocol/claude-agent-acp/issues/992)) ([0581b9c](0581b9cf39)) --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please). Co-authored-by: acp-release-bot[bot] <246668977+acp-release-bot[bot]@users.noreply.github.com>
feat: align typed session failures with AIR protocol (#992 )
2026-11-04 16:31:56 +00:00 · 2026-08-14 17:32:04 +04:00 · 2026-08-14 17:29:39 +04:00 · 2026-08-14 10:13:38 +00:00 · 2026-08-14 00:40:45 +00:00 · 2026-08-14 02:39:32 +02:00
14 changed files with 4045 additions and 370 deletions
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.66.0"
+  ".": "0.68.0"
 }
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,29 @@
 # Changelog

+## [0.68.0](https://github.com/agentclientprotocol/claude-agent-acp/compare/v0.67.0...v0.68.0) (2026-08-14)
+
+
+### Features
+
+* align typed session failures with AIR protocol ([#992](https://github.com/agentclientprotocol/claude-agent-acp/issues/992)) ([0581b9c](https://github.com/agentclientprotocol/claude-agent-acp/commit/0581b9cf397ffd88f2830db721c2d8e3689045e4))
+
+## [0.67.0](https://github.com/agentclientprotocol/claude-agent-acp/compare/v0.66.0...v0.67.0) (2026-08-14)
+
+
+### Features
+
+* **deps:** Update to @anthropic-ai/claude-agent-sdk v0.3.232 ([#993](https://github.com/agentclientprotocol/claude-agent-acp/issues/993)) ([de0d0e2](https://github.com/agentclientprotocol/claude-agent-acp/commit/de0d0e2b7d185c521c3d1ac7b86e4312c919abfe))
+* expose typed session failures for AIR ([#979](https://github.com/agentclientprotocol/claude-agent-acp/issues/979)) ([8157ee1](https://github.com/agentclientprotocol/claude-agent-acp/commit/8157ee113e705750be4eb6cc787bdd12f1db84ff))
+* publish the model fallback as a warning advisory ([#990](https://github.com/agentclientprotocol/claude-agent-acp/issues/990)) ([35aaddb](https://github.com/agentclientprotocol/claude-agent-acp/commit/35aaddb3d5b14eca316582ab285af8a660150dae))
+* surface resolved model name in default model option description ([#982](https://github.com/agentclientprotocol/claude-agent-acp/issues/982)) ([ec73cd8](https://github.com/agentclientprotocol/claude-agent-acp/commit/ec73cd8560be7d5e8b9741e404d7d45e17336996))
+* surface Skill tool calls with name and kind in _meta ([#986](https://github.com/agentclientprotocol/claude-agent-acp/issues/986)) ([1f09e9a](https://github.com/agentclientprotocol/claude-agent-acp/commit/1f09e9a3cae787b0effdfae0e7205ef7fe22b9dc))
+
+
+### Bug Fixes
+
+* preserve task plans across prompts ([#974](https://github.com/agentclientprotocol/claude-agent-acp/issues/974)) ([1afa940](https://github.com/agentclientprotocol/claude-agent-acp/commit/1afa940a2c8c0f4c610f4f64d30c0961642907b0))
+* show a pending title while Claude prepares a file ([#978](https://github.com/agentclientprotocol/claude-agent-acp/issues/978)) ([3df1ede](https://github.com/agentclientprotocol/claude-agent-acp/commit/3df1ede89f217312bc237124dc1eccc10c860f99))
+
 ## [0.66.0](https://github.com/agentclientprotocol/claude-agent-acp/compare/v0.65.0...v0.66.0) (2026-08-07)


--- a/README.md
+++ b/README.md
@@ -17,6 +17,7 @@ This tool implements an ACP agent by using the official [Claude Agent SDK](https
 - Custom [Slash commands](https://docs.anthropic.com/en/docs/claude-code/slash-commands)
 - Client MCP servers
 - Session-scoped long-running goals through the provider-neutral [goal extension](docs/goal-extension.md)
+- Structured errors, recovery, and warnings through the opt-in [session failure extension](docs/session-failure-extension.md)

 Learn more about the [Agent Client Protocol](https://agentclientprotocol.com/).

--- a/docs/session-failure-extension.md
+++ b/docs/session-failure-extension.md
@@ -0,0 +1,208 @@
+# Session failure extension
+
+This document defines the provider-neutral experimental `sessionFailure` extension implemented by
+`claude-agent-acp`. Warnings and errors are durable transcript entries shown in order beside user,
+agent, and tool messages. They are not assistant-authored text and not ephemeral chat banners.
+
+## Capability negotiation
+
+The extension is opt-in. A client advertises it in `initialize`:
+
+```json
+{
+  "clientCapabilities": {
+    "_meta": {
+      "jetbrains": {
+        "air": {
+          "version": 1,
+          "capabilities": ["sessionFailure"]
+        }
+      }
+    }
+  }
+}
+```
+
+The adapter enables the extension only when `version` is a finite integer greater than or equal to
+`1` and `capabilities` contains `sessionFailure`. Otherwise it preserves the legacy ACP behavior.
+
+## Wire record
+
+The record is placed under `_meta.jetbrains.air.sessionFailure`:
+
+```json
+{
+  "_meta": {
+    "jetbrains": {
+      "air": {
+        "version": 1,
+        "sessionFailure": {
+          "id": "prompt-uuid:error",
+          "revision": 1,
+          "category": "limit",
+          "severity": "error",
+          "title": "You've hit your individual spend limit · run /usage-credits to ask your admin for a higher limit",
+          "actions": []
+        }
+      }
+    }
+  }
+}
+```
+
+| Field      | Required | Type                 | Meaning                                                                 |
+| ---------- | -------: | -------------------- | ----------------------------------------------------------------------- |
+| `id`       |      yes | non-empty string     | Stable identity of one logical incident.                                |
+| `revision` |      yes | positive integer     | Monotonically increasing version of that incident.                      |
+| `category` |      yes | category enum        | Broad machine-readable visual group.                                    |
+| `severity` |      yes | `warning` or `error` | Inline warning or error presentation.                                   |
+| `title`    |      yes | string               | Complete normal user-facing presentation.                               |
+| `details`  |       no | string               | Long explanation used only when required text is too large for `title`. |
+| `actions`  |      yes | ordered string array | Recovery actions recommended by the adapter.                            |
+
+There are no `phase`, `source`, `safeMessage`, `retryable`, `retryAfterMs`, `turnId`, retry-counter,
+or provider-code fields. Retry progress belongs in `title` when Claude supplies it. Transcript order
+and persistence time come from the receiving ACP event.
+
+## Identity, revisions, and history
+
+`id` identifies one occurrence, not an error type.
+
+- The first record for an incident creates one transcript entry at the current stream position.
+- The same `id` with a higher `revision` updates that entry in place without moving it.
+- The same or a lower revision is idempotently ignored by the client.
+- A later independent occurrence uses a new `id`, even when its category and text are identical.
+- Consecutive updates for the same notice may reuse one id and increment its revision.
+- Different ids are never deduplicated by comparing title or category.
+
+Live turn failures use `<turnId>:error`. Session-scoped incidents use an adapter-session epoch plus an
+incident sequence. Notices have their own `:notice:` namespace. Replayed usage-limit failures recover
+the persisted user-message UUID used as the live turn id, so the same occurrence keeps the same id.
+Malformed history without a preceding user message falls back to
+`<sessionId>:history-error:<messageUuid>`.
+
+Resolved records remain in transcript history. Recovery removes only the adapter's internal active
+state; it does not publish a clear tombstone and does not delete or rewrite the historical entry. A
+producer may publish a higher revision only when it has a real new user-facing status to show.
+
+## Delivery surfaces
+
+A turn-terminal failure is attached to the successful ACP `PromptResponse` in `_meta`; the response
+uses `stopReason: end_turn`. Session-scoped, replay-restored, warning, and background incidents use a
+`session_info_update`. The schema is identical on both carriers.
+
+A warning does not end a turn. An error record does not independently invent ACP lifecycle state;
+the prompt response or transport lifecycle remains authoritative. If no capable client negotiated
+the extension, existing JSON-RPC errors and transcript text remain unchanged.
+
+## Categories
+
+Categories are deliberately broad and drive only iconography and generic accessibility labels.
+
+| Category     | Covers                                                                |
+| ------------ | --------------------------------------------------------------------- |
+| `connection` | Lost transport, stopped or shutting-down worker, unavailable runtime. |
+| `access`     | Authentication required, rejected credentials, denied access.         |
+| `limit`      | Rate, quota, token, context, turn, or configured budget limit.        |
+| `request`    | Invalid input, unsupported model or operation, rejected request.      |
+| `service`    | Provider overload, provider failure, adapter/internal failure.        |
+| `unknown`    | A warning or failure that does not fit another group.                 |
+
+Claude SDK conditions map to these groups:
+
+| Claude condition                                                                         | Category                           |
+| ---------------------------------------------------------------------------------------- | ---------------------------------- |
+| `authentication_failed`, `oauth_org_not_allowed`, synthetic login message                | `access`                           |
+| `billing_error`, `rate_limit`, `max_output_tokens`, usage/spend limit, budget/turn limit | `limit`                            |
+| `invalid_request`, `model_not_found`                                                     | `request`                          |
+| `overloaded`, `server_error`, unknown provider error, adapter internal error             | `service`                          |
+| API retry without an HTTP response, query transport loss, worker shutdown                | `connection`                       |
+| model fallback notice                                                                    | `unknown` with `severity: warning` |
+
+Unknown SDK error kinds degrade to `service`; they never become success. Category does not determine
+message text or client behavior beyond presentation.
+
+## Severity
+
+- `warning` means the operation may still succeed and normally has no actions while recovery is in
+  progress. It does not terminate the turn. SDK `api_retry` progress reuses the active turn failure id;
+  a later terminal failure updates that record with a higher revision.
+- `error` means the operation cannot continue without user action or another request.
+
+Severity is always explicit.
+
+## Title and details
+
+`title` is the complete normal presentation: what happened, retry progress when present, and a short
+next step. The adapter must not replace a real Claude message with category-specific canned wording.
+
+For Claude SDK failures the title is copied from the user-facing text Claude already emitted:
+
+- top-level assistant error text, including synthetic usage-limit and login messages;
+- otherwise the terminal SDK result or error text;
+- the exact model-fallback notice for warning records.
+
+Adapter-authored fallback text is allowed only when no Claude user-facing message exists, such as a
+query iterator throwing, worker-shutdown EOF, or an internal missing-result invariant. Raw thrown
+exceptions, stack traces, transport URLs, tokens, headers, environment values, and private paths are
+never used as titles.
+
+`details` is reserved exclusively for required explanations too large to fit reasonably in `title`.
+If the complete message fits in `title`, `details` must be omitted. It is not a place for status text,
+retry counters, provider payloads, or diagnostics.
+
+## Actions
+
+Version 1 defines only:
+
+| Action        | Meaning                                            |
+| ------------- | -------------------------------------------------- |
+| `retry`       | Retry the operation associated with this incident. |
+| `login`       | Start authentication.                              |
+| `new_session` | Start a fresh agent session/runtime.               |
+
+The adapter supplies action ordering. The client filters actions it cannot safely execute and ignores
+unknown or duplicate values. The client must not infer actions from category.
+
+Current Claude policies are:
+
+- authentication: `login`;
+- provider overload/error and recoverable internal error: `retry`;
+- transport loss or worker shutdown: `new_session`;
+- context or configured session-budget exhaustion: `new_session`;
+- account quota and invalid request: no action.
+
+## Internal recovery
+
+Recovery policy is internal adapter state and is not serialized:
+
+- restored quota remains active until a real model answer;
+- authentication remains active until successful `auth_status`;
+- transport loss and worker shutdown remain active until runtime replacement;
+- other turn-scoped failures stop being active at a later confirmed attempt boundary;
+- notices are not cleared merely by generic success.
+
+Recovery never removes the transcript record. Publishing another incident is not evidence that an
+older one recovered.
+
+## History replay
+
+`session/load` scans top-level assistant history for SDK synthetic usage-limit messages. It recognizes
+only `<synthetic>` messages beginning with SDK-owned stable prefixes, not arbitrary model prose. Every
+recognized occurrence is replayed as a typed record at its original transcript position. The latest
+matching message stays active until a later real-model answer proves recovery; older and recovered
+records remain historical typed entries.
+
+For a capable client, replay suppresses duplicate assistant prose and restores typed errors using the
+exact stored Claude text as `title`. Legacy clients receive the original transcript and no typed record.
+
+## Verification
+
+The executable contract lives primarily in `src/tests/acp-agent.test.ts`, under `usage-limit failure
+replay`, `stop reason propagation`, and `model refusal fallback handling`.
+
+```sh
+npm run build
+npm run check
+npm run test:run
+```
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,31 +1,31 @@
 {
  "name": "@agentclientprotocol/claude-agent-acp",
-  "version": "0.66.0",
+  "version": "0.68.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "@agentclientprotocol/claude-agent-acp",
-      "version": "0.66.0",
+      "version": "0.68.0",
      "license": "Apache-2.0",
      "dependencies": {
        "@agentclientprotocol/sdk": "1.3.0",
-        "@anthropic-ai/claude-agent-sdk": "0.3.220",
+        "@anthropic-ai/claude-agent-sdk": "0.3.232",
        "zod": "^3.25.0 || ^4.0.0"
      },
      "bin": {
        "claude-agent-acp": "dist/index.js"
      },
      "devDependencies": {
-        "@anthropic-ai/sdk": "0.115.0",
+        "@anthropic-ai/sdk": "0.117.1",
        "@eslint/js": "10.0.1",
        "@tsconfig/node22": "22.0.5",
-        "@types/node": "26.1.2",
-        "@typescript-eslint/eslint-plugin": "8.65.0",
-        "@typescript-eslint/parser": "8.65.0",
-        "eslint": "10.8.0",
+        "@types/node": "26.2.0",
+        "@typescript-eslint/eslint-plugin": "8.67.0",
+        "@typescript-eslint/parser": "8.67.0",
+        "eslint": "10.8.1",
        "eslint-config-prettier": "10.1.8",
-        "globals": "17.9.0",
+        "globals": "17.11.0",
        "prettier": "3.9.6",
        "ts-node": "10.9.2",
        "typescript": "6.0.3",
@@ -45,22 +45,22 @@
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      "license": "SEE LICENSE IN README.md",
      "engines": {
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-        "@anthropic-ai/claude-agent-sdk-win32-x64": "0.3.220"
+        "@anthropic-ai/claude-agent-sdk-darwin-arm64": "0.3.232",
+        "@anthropic-ai/claude-agent-sdk-darwin-x64": "0.3.232",
+        "@anthropic-ai/claude-agent-sdk-linux-arm64": "0.3.232",
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@@ -69,9 +69,9 @@
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@@ -82,9 +82,9 @@
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@@ -111,9 +111,9 @@
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--- a/package.json
+++ b/package.json
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-    "@types/node": "26.1.2",
-    "@typescript-eslint/eslint-plugin": "8.65.0",
-    "@typescript-eslint/parser": "8.65.0",
-    "eslint": "10.8.0",
+    "@types/node": "26.2.0",
+    "@typescript-eslint/eslint-plugin": "8.67.0",
+    "@typescript-eslint/parser": "8.67.0",
+    "eslint": "10.8.1",
    "eslint-config-prettier": "10.1.8",
-    "globals": "17.9.0",
+    "globals": "17.11.0",
    "prettier": "3.9.6",
    "ts-node": "10.9.2",
    "typescript": "6.0.3",
--- a/src/acp-agent.ts
+++ b/src/acp-agent.ts
--- a/src/session-failure-extension.ts
+++ b/src/session-failure-extension.ts
@@ -0,0 +1,463 @@
+import type { ClientCapabilities, SessionNotification } from "@agentclientprotocol/sdk";
+import {
+  getSessionMessages,
+  type SDKAssistantMessageError,
+  USAGE_LIMIT_ERROR_PREFIXES,
+} from "@anthropic-ai/claude-agent-sdk";
+import { randomUUID } from "node:crypto";
+
+const JETBRAINS_META_KEY = "jetbrains";
+const AIR_META_KEY = "air";
+const AIR_EXTENSION_VERSION_KEY = "version";
+const AIR_EXTENSION_CAPABILITIES_KEY = "capabilities";
+const AIR_SESSION_FAILURE_KEY = "sessionFailure";
+const AIR_EXTENSION_VERSION = 1;
+
+export function airSessionFailureCapabilityMeta() {
+  return {
+    [JETBRAINS_META_KEY]: {
+      [AIR_META_KEY]: {
+        [AIR_EXTENSION_VERSION_KEY]: AIR_EXTENSION_VERSION,
+        [AIR_EXTENSION_CAPABILITIES_KEY]: [AIR_SESSION_FAILURE_KEY],
+      },
+    },
+  };
+}
+
+export type ClaudeFailureKind =
+  | "advisory"
+  | "auth_required"
+  | "bad_request"
+  | "budget_exhausted"
+  | "context_exhausted"
+  | "internal_error"
+  | "overloaded"
+  | "provider_error"
+  | "quota_exhausted"
+  | "rate_limited"
+  | "transport_lost"
+  | "worker_shutdown";
+
+type AirSessionFailureCategory =
+  "connection" | "access" | "limit" | "request" | "service" | "unknown";
+
+type AirSessionFailureSeverity = "warning" | "error";
+type AirSessionFailureAction = "retry" | "login" | "new_session";
+
+type SessionFailureRecoveryPolicy =
+  "never" | "next_attempt" | "real_model_success" | "auth_status" | "runtime_rebind";
+
+export type PublishedSessionFailure = {
+  id: string;
+  revision: number;
+  kind: ClaudeFailureKind;
+  category: AirSessionFailureCategory;
+  turnId?: string;
+  severity: AirSessionFailureSeverity;
+  title: string;
+  details?: string;
+  actions: AirSessionFailureAction[];
+  recoveryPolicy: SessionFailureRecoveryPolicy;
+};
+
+type SessionFailureOptions = {
+  turnId?: string;
+  sessionScoped?: boolean;
+  title?: string;
+  details?: string;
+  severity?: AirSessionFailureSeverity;
+};
+
+export type SessionFailureState = {
+  epoch: string;
+  revisions: Map<string, number>;
+  active: Map<string, PublishedSessionFailure>;
+  nextIncident?: number;
+  lastNotice?: { title: string; id: string };
+};
+
+type Logger = {
+  error: (...args: unknown[]) => void;
+};
+
+export function createSessionFailureState(): SessionFailureState {
+  return {
+    epoch: randomUUID(),
+    revisions: new Map(),
+    active: new Map(),
+  };
+}
+
+const AIR_FAILURE_POLICY: Record<
+  ClaudeFailureKind,
+  {
+    category: AirSessionFailureCategory;
+    actions: AirSessionFailureAction[];
+    fallbackTitle: string;
+  }
+> = {
+  advisory: {
+    category: "unknown",
+    actions: [],
+    fallbackTitle: "Claude reported a notice.",
+  },
+  auth_required: {
+    category: "access",
+    actions: ["login"],
+    fallbackTitle: "Sign in to continue using Claude.",
+  },
+  bad_request: {
+    category: "request",
+    actions: [],
+    fallbackTitle: "Claude could not process this request.",
+  },
+  budget_exhausted: {
+    category: "limit",
+    actions: ["new_session"],
+    fallbackTitle: "This Claude session reached its configured budget.",
+  },
+  context_exhausted: {
+    category: "limit",
+    actions: ["new_session"],
+    fallbackTitle: "This Claude turn reached its configured limit.",
+  },
+  internal_error: {
+    category: "service",
+    actions: ["retry", "new_session"],
+    fallbackTitle: "Claude Agent encountered an internal error.",
+  },
+  overloaded: {
+    category: "service",
+    actions: ["retry"],
+    fallbackTitle: "Claude is temporarily overloaded.",
+  },
+  provider_error: {
+    category: "service",
+    actions: ["retry"],
+    fallbackTitle: "The model provider reported an error.",
+  },
+  quota_exhausted: {
+    category: "limit",
+    actions: [],
+    fallbackTitle: "The Claude account has no available quota.",
+  },
+  rate_limited: {
+    category: "limit",
+    actions: ["retry"],
+    fallbackTitle: "Claude is temporarily rate limited.",
+  },
+  transport_lost: {
+    category: "connection",
+    actions: ["new_session"],
+    fallbackTitle: "The connection to Claude was lost.",
+  },
+  worker_shutdown: {
+    category: "connection",
+    actions: ["new_session"],
+    fallbackTitle: "The Claude worker is shutting down.",
+  },
+};
+
+export function sessionFailureMeta(failure: PublishedSessionFailure) {
+  return {
+    [JETBRAINS_META_KEY]: {
+      [AIR_META_KEY]: {
+        [AIR_EXTENSION_VERSION_KEY]: AIR_EXTENSION_VERSION,
+        [AIR_SESSION_FAILURE_KEY]: {
+          id: failure.id,
+          revision: failure.revision,
+          category: failure.category,
+          severity: failure.severity,
+          title: failure.title,
+          ...(failure.details ? { details: failure.details } : {}),
+          actions: failure.actions,
+        },
+      },
+    },
+  };
+}
+
+/** `getSessionMessages` deliberately exposes only the API message and strips
+ *  transcript-level `error` / `isApiErrorMessage` fields. The SDK exports the
+ *  exact stable prefixes used by its synthetic usage-limit errors, so replay
+ *  can recover this one typed failure without matching arbitrary model prose. */
+export function assistantMessageText(apiMessage: unknown): string | undefined {
+  if (!apiMessage || typeof apiMessage !== "object") return undefined;
+  const { content } = apiMessage as { content?: unknown };
+  if (typeof content === "string") return content || undefined;
+  if (!Array.isArray(content)) return undefined;
+  const text = content
+    .map((block) =>
+      block &&
+      typeof block === "object" &&
+      "type" in block &&
+      block.type === "text" &&
+      "text" in block &&
+      typeof block.text === "string"
+        ? block.text
+        : "",
+    )
+    .join("");
+  return text || undefined;
+}
+
+export function isSyntheticUsageLimitMessage(apiMessage: unknown): boolean {
+  if (!apiMessage || typeof apiMessage !== "object") return false;
+  const { model } = apiMessage as { model?: unknown };
+  if (model !== "<synthetic>") return false;
+  const text = assistantMessageText(apiMessage);
+  if (!text) return false;
+  return USAGE_LIMIT_ERROR_PREFIXES.some((prefix) => text.startsWith(prefix));
+}
+
+export function activeUsageLimitMessage(
+  messages: Awaited<ReturnType<typeof getSessionMessages>>,
+): { uuid: string; title: string } | undefined {
+  let active: { uuid: string; title: string } | undefined;
+  for (const message of messages) {
+    if (message.type !== "assistant" || message.parent_tool_use_id !== null) continue;
+    if (isSyntheticUsageLimitMessage(message.message)) {
+      const title = assistantMessageText(message.message);
+      if (title) active = { uuid: message.uuid, title };
+      continue;
+    }
+    const model =
+      message.message && typeof message.message === "object" && "model" in message.message
+        ? message.message.model
+        : undefined;
+    // A later real model answer proves the account recovered. Synthetic
+    // local-command/interruption messages do not: they can be appended while
+    // the provider remains unavailable.
+    if (model !== undefined && model !== "<synthetic>") active = undefined;
+  }
+  return active;
+}
+
+export function supportsAirSessionFailures(capabilities?: ClientCapabilities): boolean {
+  const jetbrains = capabilities?._meta?.[JETBRAINS_META_KEY] as
+    Record<string, unknown> | undefined;
+  const air = jetbrains?.[AIR_META_KEY] as Record<string, unknown> | undefined;
+  const version = air?.[AIR_EXTENSION_VERSION_KEY];
+  const advertised = air?.[AIR_EXTENSION_CAPABILITIES_KEY];
+  return (
+    typeof version === "number" &&
+    Number.isFinite(version) &&
+    Number.isInteger(version) &&
+    version >= AIR_EXTENSION_VERSION &&
+    Array.isArray(advertised) &&
+    advertised.some((capability) => capability === AIR_SESSION_FAILURE_KEY)
+  );
+}
+
+function sessionFailureRecoveryPolicy(
+  kind: ClaudeFailureKind,
+  turnId?: string,
+): SessionFailureRecoveryPolicy {
+  switch (kind) {
+    case "advisory":
+      return "never";
+    case "auth_required":
+      return "auth_status";
+    case "transport_lost":
+    case "worker_shutdown":
+      return "runtime_rebind";
+    case "quota_exhausted":
+      return "real_model_success";
+    default:
+      return turnId ? "next_attempt" : "real_model_success";
+  }
+}
+
+/** Owns the AIR failure lifecycle for both the live consumer and history replay.
+ *  Published revisions become active only after delivery succeeds; recovery only
+ *  removes internal active state because transcript records are historical. */
+export class SessionFailureController {
+  private readonly sessionId: string;
+  private readonly state: SessionFailureState;
+  private readonly capabilities?: ClientCapabilities;
+  private readonly isCurrent: () => boolean;
+  private readonly sendUpdate: (notification: SessionNotification) => Promise<void>;
+  private readonly logger: Logger;
+
+  constructor(options: {
+    sessionId: string;
+    state: SessionFailureState;
+    capabilities?: ClientCapabilities;
+    isCurrent: () => boolean;
+    sendUpdate: (notification: SessionNotification) => Promise<void>;
+    logger: Logger;
+  }) {
+    this.sessionId = options.sessionId;
+    this.state = options.state;
+    this.capabilities = options.capabilities;
+    this.isCurrent = options.isCurrent;
+    this.sendUpdate = options.sendUpdate;
+    this.logger = options.logger;
+  }
+
+  private isSupported(): boolean {
+    return supportsAirSessionFailures(this.capabilities);
+  }
+
+  private async emit(failure: PublishedSessionFailure): Promise<boolean> {
+    if (!this.isCurrent()) {
+      this.logger.error(
+        `Session ${this.sessionId}: ignored AIR session failure from a stale consumer`,
+      );
+      return false;
+    }
+    try {
+      await this.sendUpdate({
+        sessionId: this.sessionId,
+        update: {
+          sessionUpdate: "session_info_update",
+          _meta: sessionFailureMeta(failure),
+        },
+      });
+      return true;
+    } catch (error) {
+      this.logger.error(
+        `Session ${this.sessionId}: failed to publish AIR session failure: ${error}`,
+      );
+      return false;
+    }
+  }
+
+  recordActive(failure: PublishedSessionFailure): void {
+    this.state.revisions.set(failure.id, failure.revision);
+    this.state.active.set(failure.id, failure);
+    this.state.lastNotice =
+      failure.kind === "advisory" ? { title: failure.title, id: failure.id } : undefined;
+  }
+
+  async clear(
+    shouldClear: (failure: PublishedSessionFailure) => boolean = () => true,
+  ): Promise<boolean> {
+    if (!this.isSupported()) return true;
+    this.state.lastNotice = undefined;
+    for (const failure of [...this.state.active.values()]) {
+      if (!shouldClear(failure)) continue;
+      this.state.active.delete(failure.id);
+    }
+    return true;
+  }
+
+  async prepare(
+    kind: ClaudeFailureKind,
+    failureOptions: SessionFailureOptions = {},
+  ): Promise<PublishedSessionFailure | undefined> {
+    if (!this.isSupported() || !this.isCurrent()) return undefined;
+    const policy = AIR_FAILURE_POLICY[kind];
+    const title = failureOptions.title || policy.fallbackTitle;
+    if (kind === "advisory") {
+      const id =
+        this.state.lastNotice?.title === title
+          ? this.state.lastNotice.id
+          : `${this.sessionId}:notice:${this.state.epoch}:${this.state.nextIncident ?? 1}`;
+      if (this.state.lastNotice?.title !== title) {
+        this.state.nextIncident = (this.state.nextIncident ?? 1) + 1;
+      }
+      return {
+        id,
+        revision: (this.state.revisions.get(id) ?? 0) + 1,
+        kind,
+        category: policy.category,
+        severity: "warning",
+        title,
+        ...(failureOptions.details ? { details: failureOptions.details } : {}),
+        actions: policy.actions,
+        recoveryPolicy: sessionFailureRecoveryPolicy(kind),
+      };
+    }
+    const id =
+      failureOptions.turnId && !failureOptions.sessionScoped
+        ? `${failureOptions.turnId}:error`
+        : `${this.sessionId}:session-error:${this.state.epoch}:${this.state.nextIncident ?? 1}`;
+    if (!failureOptions.turnId || failureOptions.sessionScoped) {
+      this.state.nextIncident = (this.state.nextIncident ?? 1) + 1;
+    }
+    return {
+      id,
+      revision: (this.state.revisions.get(id) ?? 0) + 1,
+      kind,
+      category: policy.category,
+      severity: failureOptions.severity ?? "error",
+      title,
+      ...(failureOptions.details ? { details: failureOptions.details } : {}),
+      actions: failureOptions.severity === "warning" ? [] : policy.actions,
+      recoveryPolicy: sessionFailureRecoveryPolicy(
+        kind,
+        failureOptions.turnId && !failureOptions.sessionScoped ? failureOptions.turnId : undefined,
+      ),
+      ...(failureOptions.turnId && !failureOptions.sessionScoped
+        ? { turnId: failureOptions.turnId }
+        : {}),
+    };
+  }
+
+  async publish(
+    kind: ClaudeFailureKind,
+    failureOptions: SessionFailureOptions = {},
+  ): Promise<void> {
+    const failure = await this.prepare(kind, failureOptions);
+    if (!failure) return;
+    if (await this.emit(failure)) this.recordActive(failure);
+  }
+
+  async restore(
+    id: string,
+    kind: ClaudeFailureKind,
+    title: string,
+    active = true,
+  ): Promise<boolean> {
+    if (!this.isSupported() || !this.isCurrent()) return false;
+    const policy = AIR_FAILURE_POLICY[kind];
+    const failure: PublishedSessionFailure = {
+      id,
+      revision: (this.state.revisions.get(id) ?? 0) + 1,
+      kind,
+      category: policy.category,
+      severity: "error",
+      title,
+      actions: policy.actions,
+      recoveryPolicy: sessionFailureRecoveryPolicy(kind),
+    };
+    if (!(await this.emit(failure))) return false;
+    this.state.revisions.set(failure.id, failure.revision);
+    if (active) {
+      this.state.active.set(failure.id, failure);
+    } else {
+      this.state.active.delete(failure.id);
+    }
+    return true;
+  }
+}
+
+export function providerFailureCategory(
+  errorKind?: SDKAssistantMessageError,
+  isUsageLimit = false,
+): ClaudeFailureKind {
+  if (isUsageLimit) return "quota_exhausted";
+  switch (errorKind) {
+    case "authentication_failed":
+    case "oauth_org_not_allowed":
+      return "auth_required";
+    case "billing_error":
+      return "quota_exhausted";
+    case "rate_limit":
+      return "rate_limited";
+    case "overloaded":
+      return "overloaded";
+    case "invalid_request":
+    case "model_not_found":
+      return "bad_request";
+    case "max_output_tokens":
+      return "context_exhausted";
+    case "server_error":
+    case "unknown":
+    case undefined:
+      return "provider_error";
+    default:
+      return "provider_error";
+  }
+}
--- a/src/tests/acp-agent.test.ts
+++ b/src/tests/acp-agent.test.ts
--- a/src/tests/create-session-options.test.ts
+++ b/src/tests/create-session-options.test.ts
@@ -795,7 +795,7 @@ describe("createSession options merging", () => {
      return { onUserDialog: capturedOptions!.onUserDialog!, createElicitation };
    }

-    const signal = () => ({ signal: new AbortController().signal });
+    const signal = () => ({ signal: new AbortController().signal, requestId: "1" });

    it("renders the prompt as a form elicitation and maps the retry choice", async () => {
      const { onUserDialog, createElicitation } = await setupDialog();
--- a/src/tests/fixtures/usage-limit-session.jsonl
+++ b/src/tests/fixtures/usage-limit-session.jsonl
@@ -0,0 +1,3 @@
+{"type":"user","uuid":"11111111-1111-4111-8111-111111111111","parentUuid":null,"sessionId":"aaaaaaaa-aaaa-4aaa-8aaa-aaaaaaaaaaaa","timestamp":"2026-01-01T00:00:00.000Z","message":{"role":"user","content":[{"type":"text","text":"Create a short HTML page"}]}}
+{"type":"assistant","uuid":"22222222-2222-4222-8222-222222222222","parentUuid":"11111111-1111-4111-8111-111111111111","sessionId":"aaaaaaaa-aaaa-4aaa-8aaa-aaaaaaaaaaaa","timestamp":"2026-01-01T00:00:01.000Z","error":"rate_limit","isApiErrorMessage":true,"message":{"id":"msg_usage_limit","type":"message","role":"assistant","model":"<synthetic>","content":[{"type":"text","text":"You've hit your individual spend limit · run /usage-credits to ask your admin for a higher limit"}],"stop_reason":"stop_sequence","stop_sequence":null,"usage":{"input_tokens":0,"output_tokens":0,"cache_read_input_tokens":0,"cache_creation_input_tokens":0}}}
+{"type":"assistant","uuid":"33333333-3333-4333-8333-333333333333","parentUuid":"22222222-2222-4222-8222-222222222222","sessionId":"aaaaaaaa-aaaa-4aaa-8aaa-aaaaaaaaaaaa","timestamp":"2026-01-01T00:00:02.000Z","message":{"id":"msg_local_command","type":"message","role":"assistant","model":"<synthetic>","content":[{"type":"text","text":"No response requested."}],"stop_reason":"stop_sequence","stop_sequence":null,"usage":{"input_tokens":0,"output_tokens":0,"cache_read_input_tokens":0,"cache_creation_input_tokens":0}}}
--- a/src/tests/providers.test.ts
+++ b/src/tests/providers.test.ts
@@ -59,7 +59,7 @@ describe("providers", () => {
    expect(response.agentCapabilities?.providers).toEqual({});
  });

-  it("lists a single optional 'main' provider, unconfigured by default", async () => {
+  it("lists one mutually exclusive provider slot with native routing", async () => {
    const [agent] = await createAgentMock();
    const response = await agent.unstable_listProviders({});
    expect(response.providers).toEqual([
@@ -67,7 +67,7 @@ describe("providers", () => {
        providerId: "main",
        supported: ["anthropic", "bedrock", "vertex"],
        required: false,
-        current: null,
+        current: { apiType: "anthropic", baseUrl: "https://api.anthropic.com" },
      },
    ]);
  });
@@ -126,7 +126,7 @@ describe("providers", () => {
    ).rejects.toMatchObject({ code: -32602 });
  });

-  it("disables the 'main' provider by clearing config and reporting current: null", async () => {
+  it("restores native routing after the last override is disabled", async () => {
    const [agent] = await createAgentMock();
    await agent.unstable_setProvider({
      providerId: "main",
@@ -137,7 +137,36 @@ describe("providers", () => {

    await expect(agent.unstable_disableProvider({ providerId: "main" })).resolves.toEqual({});

-    expect((await agent.unstable_listProviders({})).providers[0].current).toBeNull();
+    expect((await agent.unstable_listProviders({})).providers[0].current).toEqual({
+      apiType: "anthropic",
+      baseUrl: "https://api.anthropic.com",
+    });
+  });
+
+  it("replaces the active api type when the single slot is set again", async () => {
+    const [agent] = await createAgentMock();
+    await agent.unstable_setProvider({
+      providerId: "main",
+      apiType: "anthropic",
+      baseUrl: "https://anthropic.example",
+    });
+    await agent.unstable_setProvider({
+      providerId: "main",
+      apiType: "bedrock",
+      baseUrl: "https://bedrock.example",
+    });
+
+    const overridden = await agent.unstable_listProviders({});
+    expect(overridden.providers[0].current).toEqual({
+      apiType: "bedrock",
+      baseUrl: "https://bedrock.example",
+    });
+
+    await agent.unstable_disableProvider({ providerId: "main" });
+    expect((await agent.unstable_listProviders({})).providers[0].current).toEqual({
+      apiType: "anthropic",
+      baseUrl: "https://api.anthropic.com",
+    });
  });

  it("treats disabling an unknown provider as an idempotent no-op", async () => {
@@ -298,6 +327,9 @@ describe("providers", () => {

    await agent.logout({});

-    expect((await agent.unstable_listProviders({})).providers[0].current).toBeNull();
+    expect((await agent.unstable_listProviders({})).providers[0].current).toEqual({
+      apiType: "anthropic",
+      baseUrl: "https://api.anthropic.com",
+    });
  });
 });
--- a/src/tests/tools.test.ts
+++ b/src/tests/tools.test.ts
@@ -1,4 +1,7 @@
-import { describe, it, expect, beforeEach, vi } from "vitest";
+import { describe, it, expect, afterEach, beforeEach, vi } from "vitest";
+import { mkdirSync, mkdtempSync, rmSync, writeFileSync } from "node:fs";
+import { tmpdir } from "node:os";
+import * as path from "node:path";
 import { ClientCapabilities } from "@agentclientprotocol/sdk";
 import { ImageBlockParam, ToolResultBlockParam } from "@anthropic-ai/sdk/resources";
 import {
@@ -18,8 +21,10 @@ import {
  toolInfoFromToolUse,
  planEntries,
  applyTaskCreate,
+  applyTaskList,
  applyTaskUpdate,
  parseTaskCreateOutput,
+  parseTaskListOutput,
  taskStateToPlanEntries,
  TaskState,
 } from "../tools.js";
@@ -1817,6 +1822,14 @@ describe("planEntries - undefined input regression", () => {
      { content: "Task 2", status: "completed", priority: "medium" },
    ]);
  });
+
+  it("uses activeForm while a todo is in progress", () => {
+    expect(
+      planEntries({
+        todos: [{ content: "Run tests", status: "in_progress", activeForm: "Running tests" }],
+      }),
+    ).toEqual([{ content: "Running tests", status: "in_progress", priority: "medium" }]);
+  });
 });

 describe("toAcpNotifications - TodoWrite with undefined input regression", () => {
@@ -1884,6 +1897,20 @@ describe("parseTaskCreateOutput", () => {
    expect(parsed).toEqual({ task: { id: "2", subject: "Y" } });
  });

+  it("continues past unrelated JSON blocks", () => {
+    const parsed = parseTaskCreateOutput([
+      { type: "text", text: JSON.stringify({ metadata: "unrelated" }) },
+      { type: "text", text: JSON.stringify({ task: { id: "2", subject: "Y" } }) },
+    ]);
+    expect(parsed).toEqual({ task: { id: "2", subject: "Y" } });
+  });
+
+  it("parses the human-readable TaskCreate format used in session history", () => {
+    expect(parseTaskCreateOutput("Task #42 created successfully: Run tests")).toEqual({
+      task: { id: "42", subject: "Run tests" },
+    });
+  });
+
  it("returns undefined for non-JSON content", () => {
    expect(parseTaskCreateOutput("not json")).toBeUndefined();
    expect(parseTaskCreateOutput([{ type: "text", text: "not json" }])).toBeUndefined();
@@ -1918,11 +1945,15 @@ describe("applyTaskCreate / applyTaskUpdate", () => {

  it("updates fields by task ID and keeps insertion order in plan entries", () => {
    const state: TaskState = new Map();
-    applyTaskCreate(state, { subject: "A", description: "" }, { task: { id: "1", subject: "A" } });
+    applyTaskCreate(
+      state,
+      { subject: "A", description: "", activeForm: "Working on A" },
+      { task: { id: "1", subject: "A" } },
+    );
    applyTaskCreate(state, { subject: "B", description: "" }, { task: { id: "2", subject: "B" } });
    applyTaskUpdate(state, { taskId: "1", status: "in_progress" });
    expect(taskStateToPlanEntries(state)).toEqual([
-      { content: "A", status: "in_progress", priority: "medium" },
+      { content: "Working on A", status: "in_progress", priority: "medium" },
      { content: "B", status: "pending", priority: "medium" },
    ]);
  });
@@ -1952,6 +1983,84 @@ describe("applyTaskCreate / applyTaskUpdate", () => {
    // update is dropped instead of synthesizing a blank placeholder.
    expect(state.has("5")).toBe(false);
  });
+
+  it("rebuilds task state from TaskList while preserving richer local fields", () => {
+    const state: TaskState = new Map([
+      [
+        "1",
+        {
+          subject: "Old subject",
+          status: "pending",
+          activeForm: "Running the task",
+          description: "Details",
+        },
+      ],
+      ["deleted", { subject: "Stale", status: "pending" }],
+    ]);
+    const output = parseTaskListOutput(
+      JSON.stringify({
+        tasks: [
+          { id: "1", subject: "Current subject", status: "in_progress", blockedBy: [] },
+          { id: "2", subject: "New task", status: "pending", blockedBy: [] },
+        ],
+      }),
+    );
+
+    expect(output).toBeDefined();
+    applyTaskList(state, output!);
+
+    expect([...state.entries()]).toEqual([
+      [
+        "1",
+        {
+          subject: "Current subject",
+          status: "in_progress",
+          activeForm: "Running the task",
+          description: "Details",
+        },
+      ],
+      [
+        "2",
+        {
+          subject: "New task",
+          status: "pending",
+          activeForm: undefined,
+          description: undefined,
+        },
+      ],
+    ]);
+  });
+
+  it("finds a TaskList snapshot after an unrelated JSON block", () => {
+    expect(
+      parseTaskListOutput([
+        { type: "text", text: JSON.stringify({ metadata: "unrelated" }) },
+        {
+          type: "text",
+          text: JSON.stringify({
+            tasks: [{ id: "1", subject: "Recovered", status: "pending", blockedBy: [] }],
+          }),
+        },
+      ]),
+    ).toEqual({
+      tasks: [{ id: "1", subject: "Recovered", status: "pending", blockedBy: [] }],
+    });
+  });
+
+  it("parses the human-readable TaskList format used in session history", () => {
+    expect(
+      parseTaskListOutput(
+        "#1 [in_progress] Run tests\n#2 [pending] Write release notes [blocked by #1]",
+      ),
+    ).toEqual({
+      tasks: [
+        { id: "1", subject: "Run tests", status: "in_progress", blockedBy: [] },
+        { id: "2", subject: "Write release notes", status: "pending", blockedBy: ["1"] },
+      ],
+    });
+
+    expect(parseTaskListOutput("No tasks found")).toEqual({ tasks: [] });
+  });
 });

 describe("toAcpNotifications - Task* tools", () => {
@@ -2112,10 +2221,9 @@ describe("toAcpNotifications - Task* tools", () => {
    });
  });

-  it("suppresses TaskList and TaskGet tool_result without touching task state", () => {
+  it("uses the structured TaskList result as an authoritative plan snapshot", () => {
    const toolUseCache: ToolUseCache = {
      "list-1": { type: "tool_use", id: "list-1", name: "TaskList", input: {} },
-      "get-1": { type: "tool_use", id: "get-1", name: "TaskGet", input: { taskId: "1" } },
    };
    const taskState: TaskState = new Map([
      ["1", { subject: "Existing", status: "in_progress" as const }],
@@ -2123,8 +2231,93 @@ describe("toAcpNotifications - Task* tools", () => {

    const notifications = toAcpNotifications(
      [
-        { type: "tool_result", tool_use_id: "list-1", content: "...", is_error: false },
-        { type: "tool_result", tool_use_id: "get-1", content: "...", is_error: false },
+        {
+          type: "tool_result",
+          tool_use_id: "list-1",
+          content: "#2 [pending] Recovered",
+          is_error: false,
+        },
+      ] as any,
+      "user",
+      "test-session",
+      toolUseCache,
+      mockClient,
+      mockLogger,
+      {
+        taskState,
+        toolUseResult: {
+          tasks: [{ id: "2", subject: "Recovered", status: "pending", blockedBy: [] }],
+        },
+      },
+    );
+
+    expect(notifications).toHaveLength(1);
+    expect(notifications[0].update).toMatchObject({
+      sessionUpdate: "plan",
+      entries: [{ content: "Recovered", status: "pending", priority: "medium" }],
+    });
+    expect([...taskState.keys()]).toEqual(["2"]);
+  });
+
+  it("does not apply a logically failed TaskUpdate", () => {
+    const toolUseCache: ToolUseCache = {
+      "update-1": {
+        type: "tool_use",
+        id: "update-1",
+        name: "TaskUpdate",
+        input: { taskId: "1", status: "completed" },
+      },
+    };
+    const taskState: TaskState = new Map([["1", { subject: "Existing", status: "pending" }]]);
+
+    const notifications = toAcpNotifications(
+      [
+        {
+          type: "tool_result",
+          tool_use_id: "update-1",
+          content: "Task #1 not found",
+          is_error: false,
+        },
+      ] as any,
+      "user",
+      "test-session",
+      toolUseCache,
+      mockClient,
+      mockLogger,
+      {
+        taskState,
+        toolUseResult: {
+          success: false,
+          taskId: "1",
+          updatedFields: [],
+          error: "Task not found",
+        },
+      },
+    );
+
+    expect(notifications).toHaveLength(0);
+    expect(taskState.get("1")).toEqual({ subject: "Existing", status: "pending" });
+  });
+
+  it("does not apply a replayed TaskUpdate failure without structured output", () => {
+    const toolUseCache: ToolUseCache = {
+      "update-1": {
+        type: "tool_use",
+        id: "update-1",
+        name: "TaskUpdate",
+        input: { taskId: "1", status: "completed" },
+      },
+    };
+    const taskState: TaskState = new Map([["1", { subject: "Existing", status: "pending" }]]);
+
+    const notifications = toAcpNotifications(
+      [
+        {
+          type: "tool_result",
+          tool_use_id: "update-1",
+          content: "Task #1 not found",
+          is_error: false,
+        },
      ] as any,
      "user",
      "test-session",
@@ -2135,7 +2328,7 @@ describe("toAcpNotifications - Task* tools", () => {
    );

    expect(notifications).toHaveLength(0);
-    expect(taskState.get("1")).toEqual({ subject: "Existing", status: "in_progress" });
+    expect(taskState.get("1")).toEqual({ subject: "Existing", status: "pending" });
  });

  it("does not apply TaskCreate/TaskUpdate when the tool_result reports an error", () => {
@@ -2984,3 +3177,147 @@ describe("structured tool_use_result rendering (Read/Bash/WebSearch)", () => {
    });
  });
 });
+
+describe("Skill tool rendering", () => {
+  const mockLogger: Logger = { log: () => {}, error: () => {} };
+
+  describe("toolInfoFromToolUse", () => {
+    it("sets title to 'Load skill: <name>' and returns empty content", () => {
+      const info = toolInfoFromToolUse(
+        { name: "Skill", id: "toolu_1", input: { skill: "commits" } },
+        false,
+      );
+      expect(info.title).toBe("Load skill: commits");
+      expect(info.kind).toBe("other");
+      expect(info.content).toEqual([]);
+    });
+
+    it("falls back to 'Load skill' when skill name is absent", () => {
+      const info = toolInfoFromToolUse({ name: "Skill", id: "toolu_2", input: {} }, false);
+      expect(info.title).toBe("Load skill");
+      expect(info.content).toEqual([]);
+    });
+
+    it("does not throw when input is undefined", () => {
+      const info = toolInfoFromToolUse({ name: "Skill", id: "toolu_3", input: undefined }, false);
+      expect(info.title).toBe("Load skill");
+      expect(info.content).toEqual([]);
+    });
+  });
+
+  describe("toolUpdateFromToolResult", () => {
+    it("suppresses the raw 'Launching skill' result text", () => {
+      const toolUse = {
+        type: "tool_use",
+        id: "toolu_4",
+        name: "Skill",
+        input: { skill: "commits" },
+      };
+      const toolResult = {
+        type: "tool_result" as const,
+        tool_use_id: "toolu_4",
+        content: "Launching skill: commits",
+        is_error: false,
+      };
+      const update = toolUpdateFromToolResult(toolResult, toolUse, false);
+      expect(update).toEqual({});
+    });
+  });
+
+  describe("_meta.claudeCode.skill in tool_call notification", () => {
+    it("includes skill name in _meta.claudeCode when Skill tool is invoked", () => {
+      const notifications = toAcpNotifications(
+        [
+          { type: "tool_use", id: "toolu_5", name: "Skill", input: { skill: "commits", args: "" } },
+        ] as any,
+        "assistant",
+        "test-session",
+        {},
+        {} as AcpClient,
+        mockLogger,
+      );
+      expect(notifications[0]?.update).toMatchObject({
+        sessionUpdate: "tool_call",
+        _meta: { claudeCode: { toolName: "Skill", skill: "commits" } },
+      });
+    });
+
+    it("omits skill from _meta.claudeCode when skill name is missing", () => {
+      const notifications = toAcpNotifications(
+        [{ type: "tool_use", id: "toolu_6", name: "Skill", input: {} }] as any,
+        "assistant",
+        "test-session",
+        {},
+        {} as AcpClient,
+        mockLogger,
+      );
+      const meta = (notifications[0]?.update as any)?._meta?.claudeCode;
+      expect(meta).toBeDefined();
+      expect(meta.skill).toBeUndefined();
+    });
+  });
+
+  describe("_meta.claudeCode.skillPath", () => {
+    const skillMeta = (skill: string, cwd?: string) =>
+      (
+        toAcpNotifications(
+          [{ type: "tool_use", id: "toolu_skill_path", name: "Skill", input: { skill } }] as any,
+          "assistant",
+          "test-session",
+          {},
+          {} as AcpClient,
+          mockLogger,
+          cwd ? { cwd } : undefined,
+        )[0]?.update as any
+      )?._meta?.claudeCode;
+
+    let root: string;
+
+    beforeEach(() => {
+      root = mkdtempSync(path.join(tmpdir(), "acp-skill-path-"));
+    });
+
+    afterEach(() => {
+      rmSync(root, { recursive: true, force: true });
+    });
+
+    const writeSkill = (relativeDir: string) => {
+      const dir = path.join(root, relativeDir);
+      mkdirSync(dir, { recursive: true });
+      const file = path.join(dir, "SKILL.md");
+      writeFileSync(file, "# skill\n");
+      return file;
+    };
+
+    it("resolves a project-level .claude/skills skill", () => {
+      const file = writeSkill(".claude/skills/commits");
+      expect(skillMeta("commits", root).skillPath).toBe(file);
+    });
+
+    it("resolves a project-level .agents/skills skill", () => {
+      const file = writeSkill(".agents/skills/commits");
+      expect(skillMeta("commits", root).skillPath).toBe(file);
+    });
+
+    it("resolves a directory-scoped skill spelled prefix:name", () => {
+      const file = writeSkill("apps/web/.claude/skills/deploy");
+      expect(skillMeta("apps/web:deploy", root).skillPath).toBe(file);
+    });
+
+    it("resolves a plugin skill spelled plugin:name", () => {
+      const file = writeSkill(".claude/plugins/reviewer/skills/audit");
+      expect(skillMeta("reviewer:audit", root).skillPath).toBe(file);
+    });
+
+    it("omits skillPath when no known layout holds the skill", () => {
+      const meta = skillMeta("nonexistent", root);
+      expect(meta.skill).toBe("nonexistent");
+      expect(meta.skillPath).toBeUndefined();
+    });
+
+    it("omits skillPath when the session has no cwd", () => {
+      writeSkill(".claude/skills/commits");
+      expect(skillMeta("commits").skillPath).toBeUndefined();
+    });
+  });
+});
--- a/src/tools.ts
+++ b/src/tools.ts
@@ -21,7 +21,9 @@ import {
  ReportFindingsInput,
  TaskCreateInput,
  TaskCreateOutput,
+  TaskListOutput,
  TaskUpdateInput,
+  TaskUpdateOutput,
  TodoWriteInput,
  WebFetchInput,
  WebSearchInput,
@@ -216,7 +218,7 @@ export function toolInfoFromToolUse(
      }
      const displayPath = input?.file_path ? toDisplayPath(input.file_path, cwd) : undefined;
      return {
-        title: displayPath ? `Write ${displayPath}` : "Write",
+        title: displayPath ? `Write ${displayPath}` : "Preparing file…",
        kind: "edit",
        content,
        locations: input?.file_path ? [{ path: input.file_path }] : [],
@@ -439,6 +441,16 @@ export function toolInfoFromToolUse(
      };
    }

+    case "Skill": {
+      const input = toolUse.input as { skill?: string; args?: string } | undefined;
+      const skillName = input?.skill;
+      return {
+        title: skillName ? `Load skill: ${skillName}` : "Load skill",
+        kind: "other",
+        content: [],
+      };
+    }
+
    case "AskUserQuestion": {
      const input = toolUse.input as Partial<AskUserQuestionInput> | undefined;
      const questions = Array.isArray(input?.questions) ? input.questions : [];
@@ -861,6 +873,10 @@ export function toolUpdateFromToolResult(
      );
    }

+    case "Skill": {
+      return {};
+    }
+
    case "Edit": // Edit is handled in hooks
    case "Write": {
      return {};
@@ -1030,7 +1046,7 @@ export type ClaudePlanEntry = {

 export function planEntries(input: { todos: ClaudePlanEntry[] } | undefined): PlanEntry[] {
  return (input?.todos ?? []).map((todo) => ({
-    content: todo.content,
+    content: todo.status === "in_progress" && todo.activeForm ? todo.activeForm : todo.content,
    status: todo.status,
    priority: "medium",
  }));
@@ -1052,31 +1068,29 @@ export type TaskEntry = {
 export type TaskState = Map<string, TaskEntry>;

 /**
- * Best-effort parse of a TaskCreate tool_result content into the structured
- * TaskCreateOutput. The SDK delivers tool outputs either as a string or as
- * an array of TextBlockParam-like blocks containing JSON text; try both.
+ * Best-effort parse of a structured Task* tool_result. The SDK delivers tool
+ * outputs either as a string or as an array of TextBlockParam-like blocks
+ * containing JSON text; try both.
 */
-export function parseTaskCreateOutput(content: unknown): TaskCreateOutput | undefined {
-  const tryParse = (text: string): TaskCreateOutput | undefined => {
+function parseJsonToolOutput<T>(
+  content: unknown,
+  isExpectedOutput: (value: unknown) => value is T,
+): T | undefined {
+  const tryParse = (text: string): T | undefined => {
    try {
-      const parsed = JSON.parse(text);
-      if (
-        parsed &&
-        typeof parsed === "object" &&
-        parsed.task &&
-        typeof parsed.task.id === "string"
-      ) {
-        return parsed as TaskCreateOutput;
-      }
+      const parsed: unknown = JSON.parse(text);
+      return isExpectedOutput(parsed) ? parsed : undefined;
    } catch {
-      // ignore
+      return undefined;
    }
-    return undefined;
  };

  if (typeof content === "string") {
    return tryParse(content);
  }
+  if (content && typeof content === "object" && !Array.isArray(content)) {
+    return isExpectedOutput(content) ? content : undefined;
+  }
  if (Array.isArray(content)) {
    for (const block of content) {
      if (block && typeof block === "object" && "type" in block && block.type === "text") {
@@ -1091,6 +1105,119 @@ export function parseTaskCreateOutput(content: unknown): TaskCreateOutput | unde
  return undefined;
 }

+function toolOutputTexts(content: unknown): string[] {
+  if (typeof content === "string") return [content];
+  if (!Array.isArray(content)) return [];
+  return content.flatMap((block) =>
+    block &&
+    typeof block === "object" &&
+    "type" in block &&
+    block.type === "text" &&
+    "text" in block &&
+    typeof block.text === "string"
+      ? [block.text]
+      : [],
+  );
+}
+
+export function parseTaskCreateOutput(content: unknown): TaskCreateOutput | undefined {
+  const structured = parseJsonToolOutput(content, (parsed): parsed is TaskCreateOutput =>
+    Boolean(
+      parsed &&
+      typeof parsed === "object" &&
+      "task" in parsed &&
+      parsed.task &&
+      typeof parsed.task === "object" &&
+      "id" in parsed.task &&
+      typeof parsed.task.id === "string",
+    ),
+  );
+  if (structured) return structured;
+
+  for (const text of toolOutputTexts(content)) {
+    const match = /^Task #(\S+) created successfully: (.+)$/.exec(text.trim());
+    if (match) return { task: { id: match[1], subject: match[2] } };
+  }
+  return undefined;
+}
+
+export function parseTaskListOutput(content: unknown): TaskListOutput | undefined {
+  const validStatuses = new Set(["pending", "in_progress", "completed"]);
+  const structured = parseJsonToolOutput(content, (parsed): parsed is TaskListOutput =>
+    Boolean(
+      parsed &&
+      typeof parsed === "object" &&
+      "tasks" in parsed &&
+      Array.isArray(parsed.tasks) &&
+      parsed.tasks.every(
+        (task) =>
+          task &&
+          typeof task === "object" &&
+          typeof task.id === "string" &&
+          typeof task.subject === "string" &&
+          typeof task.status === "string" &&
+          validStatuses.has(task.status),
+      ),
+    ),
+  );
+  if (structured) return structured;
+
+  for (const text of toolOutputTexts(content)) {
+    if (text.trim() === "No tasks found") return { tasks: [] };
+
+    const tasks: TaskListOutput["tasks"] = [];
+    const lines = text.trim().split("\n");
+    for (const line of lines) {
+      const match =
+        /^#(\S+) \[(pending|in_progress|completed)\] (.+?)(?: \(([^()]*)\))?(?: \[blocked by ((?:#[^,\]]+(?:, )?)+)\])?$/.exec(
+          line,
+        );
+      if (!match) {
+        tasks.length = 0;
+        break;
+      }
+      tasks.push({
+        id: match[1],
+        subject: match[3],
+        status: match[2] as TaskListOutput["tasks"][number]["status"],
+        ...(match[4] ? { owner: match[4] } : {}),
+        blockedBy: match[5] ? match[5].split(", ").map((id) => id.slice(1)) : [],
+      });
+    }
+    if (tasks.length > 0) return { tasks };
+  }
+  return undefined;
+}
+
+export function parseTaskUpdateOutput(
+  content: unknown,
+  expectedTaskId?: string,
+): TaskUpdateOutput | undefined {
+  const structured = parseJsonToolOutput(content, (parsed): parsed is TaskUpdateOutput =>
+    Boolean(
+      parsed &&
+      typeof parsed === "object" &&
+      "success" in parsed &&
+      typeof parsed.success === "boolean" &&
+      "taskId" in parsed &&
+      typeof parsed.taskId === "string" &&
+      "updatedFields" in parsed &&
+      Array.isArray(parsed.updatedFields) &&
+      parsed.updatedFields.every((field) => typeof field === "string"),
+    ),
+  );
+  if (structured) return structured;
+
+  for (const text of toolOutputTexts(content)) {
+    const notFound = /^Task #(\S+) not found$/.exec(text.trim());
+    const taskId = notFound?.[1] ?? expectedTaskId;
+    if (taskId && (notFound || text.trim() === "Failed to delete task")) {
+      return { success: false, taskId, updatedFields: [], error: text.trim() };
+    }
+  }
+  return undefined;
+}
+
 export function applyTaskCreate(
  state: TaskState,
  input: TaskCreateInput | undefined,
@@ -1125,9 +1252,23 @@ export function applyTaskUpdate(state: TaskState, input: TaskUpdateInput | undef
  });
 }

+export function applyTaskList(state: TaskState, output: TaskListOutput): void {
+  const previous = new Map(state);
+  state.clear();
+  for (const task of output.tasks) {
+    const existing = previous.get(task.id);
+    state.set(task.id, {
+      subject: task.subject,
+      status: task.status,
+      activeForm: existing?.activeForm,
+      description: existing?.description,
+    });
+  }
+}
+
 export function taskStateToPlanEntries(state: TaskState): PlanEntry[] {
  return Array.from(state.values()).map((task) => ({
-    content: task.subject,
+    content: task.status === "in_progress" && task.activeForm ? task.activeForm : task.subject,
    status: task.status,
    priority: "medium",
  }));