diff --git a/Copyright.md b/Copyright.md
index 642c68a2..370704f8 100644
--- a/Copyright.md
+++ b/Copyright.md
@@ -266,9 +266,8 @@ Original source: https://github.com/zed-industries/codex
 
 | File                  | Nature of changes                                              |
 | --------------------- | -------------------------------------------------------------- |
-| Vendored snapshot     | Based on upstream `@agentclientprotocol/claude-agent-acp` `0.37.0` (`36822c2b75b6e1cd5406a5ab40fe603fc380ee10`) with vendored `dist/` runtime files |
-| `package.json`, `package-lock.json` | Updated `@anthropic-ai/claude-agent-sdk` to `0.3.154` to embed Claude Code `2.1.154` |
-| `src/acp-agent.ts`, `dist/acp-agent.js` | Added no-op handling for the SDK `thinking_tokens` system event introduced by the newer runtime |
+| Vendored snapshot     | Based on upstream `@agentclientprotocol/claude-agent-acp` `0.39.0` (`edde96ebafac2ea5d1c879c17459453472d82916`) with generated `dist/` runtime files required by desktop packaging |
+| `src/acp-agent.ts`, `dist/acp-agent.js` | Replaced upstream local-command metadata regex with a linear scanner to avoid polynomial runtime on uncontrolled input |
 
 > All original copyright notices and license headers have been preserved.
 > The full text of the Apache-2.0 license is available at
diff --git a/vendor/Claude-agent-acp-upstream/.release-please-manifest.json b/vendor/Claude-agent-acp-upstream/.release-please-manifest.json
index 05b60243..418b49e9 100644
--- a/vendor/Claude-agent-acp-upstream/.release-please-manifest.json
+++ b/vendor/Claude-agent-acp-upstream/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.37.0"
+  ".": "0.39.0"
 }
diff --git a/vendor/Claude-agent-acp-upstream/CHANGELOG.md b/vendor/Claude-agent-acp-upstream/CHANGELOG.md
index 89a46f62..cc88c742 100644
--- a/vendor/Claude-agent-acp-upstream/CHANGELOG.md
+++ b/vendor/Claude-agent-acp-upstream/CHANGELOG.md
@@ -1,5 +1,25 @@
 # Changelog
 
+## [0.39.0](https://github.com/agentclientprotocol/claude-agent-acp/compare/v0.38.0...v0.39.0) (2026-05-29)
+
+
+### Features
+
+* **deps:** update Claude Agent SDK to 0.3.156 ([#722](https://github.com/agentclientprotocol/claude-agent-acp/issues/722)) ([3fb6db4](https://github.com/agentclientprotocol/claude-agent-acp/commit/3fb6db4e5ee5bd1f431cf5d2ce5331ce983f9597))
+
+## [0.38.0](https://github.com/agentclientprotocol/claude-agent-acp/compare/v0.37.0...v0.38.0) (2026-05-28)
+
+
+### Features
+
+* **deps:** bump to @anthropic-ai/claude-agent-sdk 0.3.154 (Opus 4.8) ([#716](https://github.com/agentclientprotocol/claude-agent-acp/issues/716)) ([a172885](https://github.com/agentclientprotocol/claude-agent-acp/commit/a172885c80fc32c108a8501268a543641088f543))
+* Support Opus 4.8 ([#718](https://github.com/agentclientprotocol/claude-agent-acp/issues/718)) ([98b54a0](https://github.com/agentclientprotocol/claude-agent-acp/commit/98b54a02c267cdef619becceccf6ef519fbf8f6f))
+
+
+### Bug Fixes
+
+* Remove hide Claude auth flag handling ([#707](https://github.com/agentclientprotocol/claude-agent-acp/issues/707)) ([7ed1daf](https://github.com/agentclientprotocol/claude-agent-acp/commit/7ed1daf7b42088ad149e9bf742f764752b82d093))
+
 ## [0.37.0](https://github.com/agentclientprotocol/claude-agent-acp/compare/v0.36.1...v0.37.0) (2026-05-21)
 
 
diff --git a/vendor/Claude-agent-acp-upstream/dist/acp-agent.d.ts.map b/vendor/Claude-agent-acp-upstream/dist/acp-agent.d.ts.map
index 825aebe5..4ecf6753 100644
--- a/vendor/Claude-agent-acp-upstream/dist/acp-agent.d.ts.map
+++ b/vendor/Claude-agent-acp-upstream/dist/acp-agent.d.ts.map
@@ -1 +1 @@
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\ No newline at end of file
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\ No newline at end of file
diff --git a/vendor/Claude-agent-acp-upstream/dist/acp-agent.js b/vendor/Claude-agent-acp-upstream/dist/acp-agent.js
index 9ab1abf1..06d16e8b 100644
--- a/vendor/Claude-agent-acp-upstream/dist/acp-agent.js
+++ b/vendor/Claude-agent-acp-upstream/dist/acp-agent.js
@@ -463,6 +463,13 @@ export class ClaudeAcpAgent {
         // forward it to clients as structured `data`, sparing them from
         // pattern-matching on the human-readable message text.
         let lastAssistantError;
+        // Tracks whether we're inside a compaction. The SDK emits the terminal
+        // `status` (compact_result success/failed) twice for a single failed
+        // compaction, and the two messages are indistinguishable — so we report the
+        // outcome only while a compaction is in progress, then clear this. A fresh
+        // `compacting` status sets it again, so every distinct compaction (e.g.
+        // repeated auto-compactions in a long turn) is still shown.
+        let compactionInProgress = false;
         const userMessage = promptToClaude(params);
         const promptUuid = randomUUID();
         userMessage.uuid = promptUuid;
@@ -511,6 +518,7 @@ export class ClaudeAcpAgent {
                                 break;
                             case "status": {
                                 if (message.status === "compacting") {
+                                    compactionInProgress = true;
                                     await this.client.sessionUpdate({
                                         sessionId: message.session_id,
                                         update: {
@@ -519,6 +527,30 @@ export class ClaudeAcpAgent {
                                         },
                                     });
                                 }
+                                else if (message.compact_result === "success" && compactionInProgress) {
+                                    // The SDK signals manual `/compact` completion with a status
+                                    // message carrying `compact_result`, not the `compact_boundary`
+                                    // message (which only fires when there's content to compact).
+                                    compactionInProgress = false;
+                                    await this.client.sessionUpdate({
+                                        sessionId: message.session_id,
+                                        update: {
+                                            sessionUpdate: "agent_message_chunk",
+                                            content: { type: "text", text: "\n\nCompacting completed." },
+                                        },
+                                    });
+                                }
+                                else if (message.compact_result === "failed" && compactionInProgress) {
+                                    compactionInProgress = false;
+                                    const reason = message.compact_error ? `: ${message.compact_error}` : ".";
+                                    await this.client.sessionUpdate({
+                                        sessionId: message.session_id,
+                                        update: {
+                                            sessionUpdate: "agent_message_chunk",
+                                            content: { type: "text", text: `\n\nCompacting failed${reason}` },
+                                        },
+                                    });
+                                }
                                 break;
                             }
                             case "compact_boundary": {
@@ -533,6 +565,10 @@ export class ClaudeAcpAgent {
                                 // The alternative (no update) leaves the client showing e.g.
                                 // "944k/1m" right after the user sees "Compacting completed",
                                 // which is confusing and wrong.
+                                //
+                                // The "Compacting completed." text is emitted from the `status`
+                                // handler (keyed on `compact_result`), not here, so the failure
+                                // path gets a message too.
                                 lastAssistantTotalUsage = 0;
                                 lastAssistantUsage = null;
                                 await this.client.sessionUpdate({
@@ -543,13 +579,6 @@ export class ClaudeAcpAgent {
                                         size: session.contextWindowSize,
                                     },
                                 });
-                                await this.client.sessionUpdate({
-                                    sessionId: message.session_id,
-                                    update: {
-                                        sessionUpdate: "agent_message_chunk",
-                                        content: { type: "text", text: "\n\nCompacting completed." },
-                                    },
-                                });
                                 break;
                             }
                             case "local_command_output": {
@@ -831,7 +860,8 @@ export class ClaudeAcpAgent {
                         // /usage, /status, /model) arrive wrapped in these tags; pure-marker
                         // payloads (e.g. /compact's malformed output) strip to null and are
                         // skipped. Mirrors the replay path at replaySessionHistory.
-                        if (typeof message.message.content === "string" &&
+                        if (message.message.role !== "system" &&
+                            typeof message.message.content === "string" &&
                             message.message.content.includes("<local-command-stdout>")) {
                             const stripped = stripLocalCommandMetadata(message.message.content);
                             if (typeof stripped === "string") {
@@ -862,6 +892,9 @@ export class ClaudeAcpAgent {
                                     message.message.content[0].type === "text"))) {
                             break;
                         }
+                        if (message.message.role === "system") {
+                            break;
+                        }
                         if (message.type === "assistant" &&
                             message.message.model === "<synthetic>" &&
                             Array.isArray(message.message.content) &&
@@ -2504,6 +2537,7 @@ export function toAcpNotifications(content, role, sessionId, toolUseCache, clien
             case "compaction":
             case "compaction_delta":
             case "advisor_tool_result":
+            case "mid_conv_system":
                 break;
             default:
                 unreachable(chunk, logger);
@@ -2541,7 +2575,11 @@ export function streamEventToAcpNotifications(message, sessionId, toolUseCache,
                 cwd: options?.cwd,
                 taskState: options?.taskState,
             });
-        // No content
+        // No content. `ping` is a Messages-API keep-alive event that the SDK's
+        // `BetaRawMessageStreamEvent` union doesn't include even though the
+        // wire format emits it; the `as never` cast lets us no-op it here
+        // instead of letting it fall through to `unreachable`.
+        case "ping":
         case "message_start":
         case "message_delta":
         case "message_stop":
diff --git a/vendor/Claude-agent-acp-upstream/dist/tests/acp-agent.test.js b/vendor/Claude-agent-acp-upstream/dist/tests/acp-agent.test.js
index de707a92..db881739 100644
--- a/vendor/Claude-agent-acp-upstream/dist/tests/acp-agent.test.js
+++ b/vendor/Claude-agent-acp-upstream/dist/tests/acp-agent.test.js
@@ -3,7 +3,7 @@ import { spawn, spawnSync } from "child_process";
 import { ClientSideConnection, ndJsonStream, } from "@agentclientprotocol/sdk";
 import { nodeToWebWritable, nodeToWebReadable } from "../utils.js";
 import { markdownEscape, toolInfoFromToolUse, toDisplayPath, toolUpdateFromToolResult, toolUpdateFromDiffToolResponse, } from "../tools.js";
-import { toAcpNotifications, promptToClaude, isLocalCommandMetadata, stripLocalCommandMetadata, ClaudeAcpAgent, claudeCliPath, describeAlwaysAllow, } from "../acp-agent.js";
+import { toAcpNotifications, promptToClaude, isLocalCommandMetadata, stripLocalCommandMetadata, ClaudeAcpAgent, claudeCliPath, describeAlwaysAllow, streamEventToAcpNotifications, } from "../acp-agent.js";
 import { Pushable } from "../utils.js";
 import { deleteSession, query } from "@anthropic-ai/claude-agent-sdk";
 import { randomUUID } from "crypto";
@@ -163,13 +163,15 @@ describe.skipIf(!process.env.RUN_INTEGRATION_TESTS)("ACP subprocess integration"
             },
             name: "compact",
         });
-        // Send something
-        await connection.prompt({
-            prompt: [{ type: "text", text: "Hi" }],
-            sessionId: newSessionResponse.sessionId,
-        });
-        // Clear response
-        client.takeReceivedText();
+        // Build up enough conversation that there's something to compact. The SDK
+        // refuses to compact a conversation with too few message groups.
+        for (let i = 0; i < 6; i++) {
+            await connection.prompt({
+                prompt: [{ type: "text", text: `Reply with just the number ${i}.` }],
+                sessionId: newSessionResponse.sessionId,
+            });
+            client.takeReceivedText();
+        }
         await connection.prompt({
             prompt: [
                 {
@@ -180,7 +182,7 @@ describe.skipIf(!process.env.RUN_INTEGRATION_TESTS)("ACP subprocess integration"
             sessionId: newSessionResponse.sessionId,
         });
         expect(client.takeReceivedText()).toContain("Compacting...\n\nCompacting completed.");
-    }, 30000);
+    }, 60000);
 });
 describe("tool conversions", () => {
     it("should handle Bash nicely", () => {
@@ -549,6 +551,7 @@ describe("tool conversions", () => {
                     server_tool_use: null,
                     inference_geo: null,
                     iterations: null,
+                    output_tokens_details: null,
                     speed: null,
                 },
                 context_management: null,
@@ -3321,3 +3324,27 @@ describe("post-error recovery", () => {
         expect(session.pendingMessages.size).toBe(0);
     });
 });
+describe("streamEventToAcpNotifications", () => {
+    it("treats `ping` keep-alive events as no-ops without logging to stderr", () => {
+        const errors = [];
+        const logger = {
+            log: () => { },
+            error: (...args) => {
+                errors.push(args);
+            },
+        };
+        const pingMessage = {
+            type: "stream_event",
+            parent_tool_use_id: null,
+            uuid: randomUUID(),
+            session_id: "test-session",
+            // The SDK's typed `BetaRawMessageStreamEvent` union doesn't include
+            // `ping`, but the API emits it on the wire and the SDK passes it
+            // through. Cast through `unknown` to feed the realistic runtime shape.
+            event: { type: "ping" },
+        };
+        const result = streamEventToAcpNotifications(pingMessage, "test-session", {}, { sessionUpdate: async () => { } }, logger);
+        expect(result).toEqual([]);
+        expect(errors).toEqual([]);
+    });
+});
diff --git a/vendor/Claude-agent-acp-upstream/dist/tests/authorization.test.js b/vendor/Claude-agent-acp-upstream/dist/tests/authorization.test.js
index 0b5bd242..4c752578 100644
--- a/vendor/Claude-agent-acp-upstream/dist/tests/authorization.test.js
+++ b/vendor/Claude-agent-acp-upstream/dist/tests/authorization.test.js
@@ -10,7 +10,8 @@ const mockQuery = vi.hoisted(() => vi.fn(() => ({
     setPermissionMode: vi.fn(),
     supportedCommands: vi.fn().mockResolvedValue([]),
 })));
-vi.mock("@anthropic-ai/claude-agent-sdk", () => ({
+vi.mock("@anthropic-ai/claude-agent-sdk", async () => ({
+    ...(await vi.importActual("@anthropic-ai/claude-agent-sdk")),
     query: mockQuery,
 }));
 describe("authorization", () => {
diff --git a/vendor/Claude-agent-acp-upstream/package-lock.json b/vendor/Claude-agent-acp-upstream/package-lock.json
index 95c7370b..ce93e21e 100644
--- a/vendor/Claude-agent-acp-upstream/package-lock.json
+++ b/vendor/Claude-agent-acp-upstream/package-lock.json
@@ -1,27 +1,27 @@
 {
   "name": "@agentclientprotocol/claude-agent-acp",
-  "version": "0.37.0",
+  "version": "0.39.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@agentclientprotocol/claude-agent-acp",
-      "version": "0.37.0",
+      "version": "0.39.0",
       "license": "Apache-2.0",
       "dependencies": {
         "@agentclientprotocol/sdk": "0.22.1",
-        "@anthropic-ai/claude-agent-sdk": "0.3.154",
+        "@anthropic-ai/claude-agent-sdk": "0.3.156",
         "zod": "^3.25.0 || ^4.0.0"
       },
       "bin": {
         "claude-agent-acp": "dist/index.js"
       },
       "devDependencies": {
-        "@anthropic-ai/sdk": "0.97.1",
+        "@anthropic-ai/sdk": "0.100.0",
         "@eslint/js": "10.0.1",
         "@types/node": "25.9.1",
-        "@typescript-eslint/eslint-plugin": "8.59.4",
-        "@typescript-eslint/parser": "8.59.4",
+        "@typescript-eslint/eslint-plugin": "8.60.0",
+        "@typescript-eslint/parser": "8.60.0",
         "eslint": "10.4.0",
         "eslint-config-prettier": "10.1.8",
         "globals": "17.6.0",
@@ -41,22 +41,22 @@
       }
     },
     "node_modules/@anthropic-ai/claude-agent-sdk": {
-      "version": "0.3.154",
-      "resolved": "https://registry.npmjs.org/@anthropic-ai/claude-agent-sdk/-/claude-agent-sdk-0.3.154.tgz",
-      "integrity": "sha512-iEn25urI2QrMPFIhId3h7v/7EG5gsmF7ooe+6EvsAosePeLmpVVerp5nXtHnlmBkMinLecurcPA+OddKw76jYw==",
+      "version": "0.3.156",
+      "resolved": "https://registry.npmjs.org/@anthropic-ai/claude-agent-sdk/-/claude-agent-sdk-0.3.156.tgz",
+      "integrity": "sha512-6nM/Dj+VMds52UXJ2YaV4IKhYamlUqN0HtdDrFzYz5lvPMpDS935qD8YZDAUpy+ltdoD6PJMd1V/CKFY3/oWCQ==",
       "license": "SEE LICENSE IN README.md",
       "engines": {
         "node": ">=18.0.0"
       },
       "optionalDependencies": {
-        "@anthropic-ai/claude-agent-sdk-darwin-arm64": "0.3.154",
-        "@anthropic-ai/claude-agent-sdk-darwin-x64": "0.3.154",
-        "@anthropic-ai/claude-agent-sdk-linux-arm64": "0.3.154",
-        "@anthropic-ai/claude-agent-sdk-linux-arm64-musl": "0.3.154",
-        "@anthropic-ai/claude-agent-sdk-linux-x64": "0.3.154",
-        "@anthropic-ai/claude-agent-sdk-linux-x64-musl": "0.3.154",
-        "@anthropic-ai/claude-agent-sdk-win32-arm64": "0.3.154",
-        "@anthropic-ai/claude-agent-sdk-win32-x64": "0.3.154"
+        "@anthropic-ai/claude-agent-sdk-darwin-arm64": "0.3.156",
+        "@anthropic-ai/claude-agent-sdk-darwin-x64": "0.3.156",
+        "@anthropic-ai/claude-agent-sdk-linux-arm64": "0.3.156",
+        "@anthropic-ai/claude-agent-sdk-linux-arm64-musl": "0.3.156",
+        "@anthropic-ai/claude-agent-sdk-linux-x64": "0.3.156",
+        "@anthropic-ai/claude-agent-sdk-linux-x64-musl": "0.3.156",
+        "@anthropic-ai/claude-agent-sdk-win32-arm64": "0.3.156",
+        "@anthropic-ai/claude-agent-sdk-win32-x64": "0.3.156"
       },
       "peerDependencies": {
         "@anthropic-ai/sdk": ">=0.93.0",
@@ -65,9 +65,9 @@
       }
     },
     "node_modules/@anthropic-ai/claude-agent-sdk-darwin-arm64": {
-      "version": "0.3.154",
-      "resolved": "https://registry.npmjs.org/@anthropic-ai/claude-agent-sdk-darwin-arm64/-/claude-agent-sdk-darwin-arm64-0.3.154.tgz",
-      "integrity": "sha512-oFW3LD5lYrKAU+AKu27Z8hrzqkrh362qQrwi/i3DxGcud9BXUycsXYjShpDj3D3JZu169UzZuSPhx1Wajmbiwg==",
+      "version": "0.3.156",
+      "resolved": "https://registry.npmjs.org/@anthropic-ai/claude-agent-sdk-darwin-arm64/-/claude-agent-sdk-darwin-arm64-0.3.156.tgz",
+      "integrity": "sha512-IkjcS9dqAUlD4Nb62L9AZtmAXCa+FV4ul8lIlyXXUprh3nlecbKsWOXVd/GORrzAhMmynJaX4+iV1JiutFKXUA==",
       "cpu": [
         "arm64"
       ],
@@ -78,9 +78,9 @@
       ]
     },
     "node_modules/@anthropic-ai/claude-agent-sdk-darwin-x64": {
-      "version": "0.3.154",
-      "resolved": "https://registry.npmjs.org/@anthropic-ai/claude-agent-sdk-darwin-x64/-/claude-agent-sdk-darwin-x64-0.3.154.tgz",
-      "integrity": "sha512-5BgWEueP+cqoctWjZYhCbyltuaV/N2DmKDXD3/69cKaVmJp8XL9OCzlq/HEirA/+Ssjskx6hDUBaOcpuZ3iwQA==",
+      "version": "0.3.156",
+      "resolved": "https://registry.npmjs.org/@anthropic-ai/claude-agent-sdk-darwin-x64/-/claude-agent-sdk-darwin-x64-0.3.156.tgz",
+      "integrity": "sha512-6PKi5fPmGRuzXu+Em/iwLmPG3mqg0hl92wcTU8fmChqyNtxhxsjCw7LTbdFqp/05o5NeZVVV4k3p7YUv5IFD6g==",
       "cpu": [
         "x64"
       ],
@@ -91,9 +91,9 @@
       ]
     },
     "node_modules/@anthropic-ai/claude-agent-sdk-linux-arm64": {
-      "version": "0.3.154",
-      "resolved": "https://registry.npmjs.org/@anthropic-ai/claude-agent-sdk-linux-arm64/-/claude-agent-sdk-linux-arm64-0.3.154.tgz",
-      "integrity": "sha512-rRkW4SBL3W7zQvKscCIfIGlmoeuTbMV6dXFbPdmpRGvmYZIs79RpzO6xrGBnnhmm+B7znQ9oHAnffi/2FBgJbA==",
+      "version": "0.3.156",
+      "resolved": "https://registry.npmjs.org/@anthropic-ai/claude-agent-sdk-linux-arm64/-/claude-agent-sdk-linux-arm64-0.3.156.tgz",
+      "integrity": "sha512-H0Nfd41iw5isto9uQI1FlVSZ0eaDttr8rBpJMR25oK/mj3egMO5EmZ6aAxeeUYSLn2mSU50HA5VNxlGUE118TQ==",
       "cpu": [
         "arm64"
       ],
@@ -104,9 +104,9 @@
       ]
     },
     "node_modules/@anthropic-ai/claude-agent-sdk-linux-arm64-musl": {
-      "version": "0.3.154",
-      "resolved": "https://registry.npmjs.org/@anthropic-ai/claude-agent-sdk-linux-arm64-musl/-/claude-agent-sdk-linux-arm64-musl-0.3.154.tgz",
-      "integrity": "sha512-o2bCQN4Xn3UqCLErC5m4T7u0yYArJYmgFCUFnA6K96DdW2RERvx+gTKXxWuHEBkDO+eMoHLHLxk0u2jGES00Ng==",
+      "version": "0.3.156",
+      "resolved": "https://registry.npmjs.org/@anthropic-ai/claude-agent-sdk-linux-arm64-musl/-/claude-agent-sdk-linux-arm64-musl-0.3.156.tgz",
+      "integrity": "sha512-R7KEVjxkR4rYgIQoHGBzwPdUJYxRTO8I4vHjRbMLH1eW4FS7BJvVs7ogfKR/NnHFBvMVqtC+l6jHLQv8bobUiw==",
       "cpu": [
         "arm64"
       ],
@@ -117,9 +117,9 @@
       ]
     },
     "node_modules/@anthropic-ai/claude-agent-sdk-linux-x64": {
-      "version": "0.3.154",
-      "resolved": "https://registry.npmjs.org/@anthropic-ai/claude-agent-sdk-linux-x64/-/claude-agent-sdk-linux-x64-0.3.154.tgz",
-      "integrity": "sha512-GpiFF8Ez6PbM3m0gqtCo/FKM346qyRdP7VhbmJzdnbNKTiiUZ66vDQyEUPZPCG24ZkrG4m96KpRIUwY08rHiNg==",
+      "version": "0.3.156",
+      "resolved": "https://registry.npmjs.org/@anthropic-ai/claude-agent-sdk-linux-x64/-/claude-agent-sdk-linux-x64-0.3.156.tgz",
+      "integrity": "sha512-ymhrdlbWoYvTACUdaGdhrEv+ZMfwXLsf0BRLkr/IvY5aqybP7URzWmmZGOtDQpqkT/8xu/UCGqUYH3woJwUxfg==",
       "cpu": [
         "x64"
       ],
@@ -130,9 +130,9 @@
       ]
     },
     "node_modules/@anthropic-ai/claude-agent-sdk-linux-x64-musl": {
-      "version": "0.3.154",
-      "resolved": "https://registry.npmjs.org/@anthropic-ai/claude-agent-sdk-linux-x64-musl/-/claude-agent-sdk-linux-x64-musl-0.3.154.tgz",
-      "integrity": "sha512-zA7S8Lm6O4QBsUpbhiOht8BgiXHOBBFUIo8ZLK6r5wAatK3Q44syWVxICeyCnR6wqfnkf3cugCw27ycS6vVgaA==",
+      "version": "0.3.156",
+      "resolved": "https://registry.npmjs.org/@anthropic-ai/claude-agent-sdk-linux-x64-musl/-/claude-agent-sdk-linux-x64-musl-0.3.156.tgz",
+      "integrity": "sha512-/Q6WUizI6a+hqZZ6ElwRU0PEuFhOoN4v6CuU35HHbiZ/7uaocGht4A8ZIgK1Fw6wOGtZzGLbc00CA1OU1Zg8EA==",
       "cpu": [
         "x64"
       ],
@@ -143,9 +143,9 @@
       ]
     },
     "node_modules/@anthropic-ai/claude-agent-sdk-win32-arm64": {
-      "version": "0.3.154",
-      "resolved": "https://registry.npmjs.org/@anthropic-ai/claude-agent-sdk-win32-arm64/-/claude-agent-sdk-win32-arm64-0.3.154.tgz",
-      "integrity": "sha512-cDW1YFbU/PJFlrGXhlAGcbkXt80sEO6WtnH8nN8YHXLn5NWduy2q7o/qC6i8XozgvRGf6t/eMoH7IasGIEDhDw==",
+      "version": "0.3.156",
+      "resolved": "https://registry.npmjs.org/@anthropic-ai/claude-agent-sdk-win32-arm64/-/claude-agent-sdk-win32-arm64-0.3.156.tgz",
+      "integrity": "sha512-5sAeNObQQrMy4NF9HwxewrMnU7mVxZDHh+/MfJVQSz0GSTvXQ6gOuRH8helMlfspoU6VOdekPxVLRooX/3foEw==",
       "cpu": [
         "arm64"
       ],
@@ -156,9 +156,9 @@
       ]
     },
     "node_modules/@anthropic-ai/claude-agent-sdk-win32-x64": {
-      "version": "0.3.154",
-      "resolved": "https://registry.npmjs.org/@anthropic-ai/claude-agent-sdk-win32-x64/-/claude-agent-sdk-win32-x64-0.3.154.tgz",
-      "integrity": "sha512-tSKaIIpL72OPg3WfzZTCIl8OJgcbq4qieu8/fDWjsdeQuari9gQMIuEflFphk9HqNsxpSmDqKi8Sm5mW2V566Q==",
+      "version": "0.3.156",
+      "resolved": "https://registry.npmjs.org/@anthropic-ai/claude-agent-sdk-win32-x64/-/claude-agent-sdk-win32-x64-0.3.156.tgz",
+      "integrity": "sha512-/PofeTWoiKgnWNSNk0wG4SsRn22GGLmnLhg2R94WcNhCRFOyOTmiZcYH2DBlWZBIRVTZDsSfa/Pl1DyPvYCGKw==",
       "cpu": [
         "x64"
       ],
@@ -169,9 +169,9 @@
       ]
     },
     "node_modules/@anthropic-ai/sdk": {
-      "version": "0.97.1",
-      "resolved": "https://registry.npmjs.org/@anthropic-ai/sdk/-/sdk-0.97.1.tgz",
-      "integrity": "sha512-wOf7AUeJPitcVpvKO4UMu63mWH5SaVipkGd7OOQJt/G6VYGlV8D2Gp9dLxOrttDJh/9gqPqdaBwDGcBevumeAg==",
+      "version": "0.100.0",
+      "resolved": "https://registry.npmjs.org/@anthropic-ai/sdk/-/sdk-0.100.0.tgz",
+      "integrity": "sha512-cAm3aXm6qAiHIvHxyIIGd6tVmsD2gDqlc2h0R20ijNUzGgVnIN822bit4mKbF6CkuV7qIrLQIPoAepHEpanrQQ==",
       "license": "MIT",
       "dependencies": {
         "json-schema-to-ts": "^3.1.1",
@@ -190,9 +190,9 @@
       }
     },
     "node_modules/@babel/runtime": {
-      "version": "7.29.2",
-      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.29.2.tgz",
-      "integrity": "sha512-JiDShH45zKHWyGe4ZNVRrCjBz8Nh9TMmZG1kh4QTK8hCBTWBi8Da+i7s1fJw7/lYpM4ccepSNfqzZ/QvABBi5g==",
+      "version": "7.29.7",
+      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.29.7.tgz",
+      "integrity": "sha512-Nq8OhGWiZIZGV6hLHoyAKLLcJihP/xFeBMGJoUrxTX2psI8dCifzLhZISFb+VWS3wFMRDmCGw5R+dOySCqPLhw==",
       "license": "MIT",
       "engines": {
         "node": ">=6.9.0"
@@ -903,17 +903,17 @@
       }
     },
     "node_modules/@typescript-eslint/eslint-plugin": {
-      "version": "8.59.4",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-8.59.4.tgz",
-      "integrity": "sha512-PegsU+XfyJJNjd4+u/k6f9yTyp0lEXXiPopUNobZcIAUJFGICFLN+sP0Rb3JehVmiij1Ph0dFGYqODoRo/2+6A==",
+      "version": "8.60.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-8.60.0.tgz",
+      "integrity": "sha512-QYb/sa74/s7OKMbACMjrYnGspj9Hs5YI5aaffSL65UfeBUzVzBJfVo3oWSpbzPurvm7yaCCo2Lk7lVj610HqKw==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
         "@eslint-community/regexpp": "^4.12.2",
-        "@typescript-eslint/scope-manager": "8.59.4",
-        "@typescript-eslint/type-utils": "8.59.4",
-        "@typescript-eslint/utils": "8.59.4",
-        "@typescript-eslint/visitor-keys": "8.59.4",
+        "@typescript-eslint/scope-manager": "8.60.0",
+        "@typescript-eslint/type-utils": "8.60.0",
+        "@typescript-eslint/utils": "8.60.0",
+        "@typescript-eslint/visitor-keys": "8.60.0",
         "ignore": "^7.0.5",
         "natural-compare": "^1.4.0",
         "ts-api-utils": "^2.5.0"
@@ -926,22 +926,22 @@
         "url": "https://opencollective.com/typescript-eslint"
       },
       "peerDependencies": {
-        "@typescript-eslint/parser": "8.59.4",
+        "@typescript-eslint/parser": "^8.60.0",
         "eslint": "^8.57.0 || ^9.0.0 || ^10.0.0",
         "typescript": ">=4.8.4 <6.1.0"
       }
     },
     "node_modules/@typescript-eslint/parser": {
-      "version": "8.59.4",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/parser/-/parser-8.59.4.tgz",
-      "integrity": "sha512-zORHqO/tuhxY1zWuTvMUqddRxpiFJ72xVfcNoWpqdLjs6lfPbuQBJuW4pk+49/uBMy7Ssr4bzgjiKmmDB1UbZQ==",
+      "version": "8.60.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/parser/-/parser-8.60.0.tgz",
+      "integrity": "sha512-fcqpj/MyK4sxDPcbe7STNPbpQL4RLZOPWuaTmwZYuc+hJKzRf58yRxfhqGpc6PIq9ZyfSBpfHgmUHmHs0KwHwg==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@typescript-eslint/scope-manager": "8.59.4",
-        "@typescript-eslint/types": "8.59.4",
-        "@typescript-eslint/typescript-estree": "8.59.4",
-        "@typescript-eslint/visitor-keys": "8.59.4",
+        "@typescript-eslint/scope-manager": "8.60.0",
+        "@typescript-eslint/types": "8.60.0",
+        "@typescript-eslint/typescript-estree": "8.60.0",
+        "@typescript-eslint/visitor-keys": "8.60.0",
         "debug": "^4.4.3"
       },
       "engines": {
@@ -957,14 +957,14 @@
       }
     },
     "node_modules/@typescript-eslint/project-service": {
-      "version": "8.59.4",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/project-service/-/project-service-8.59.4.tgz",
-      "integrity": "sha512-Ly00Vu4oAacfDeHp2Zg85ioNG6l8HG+tN1D7J+xTHSxu9y0awYKJ2zH1rFBn8ZSfuGK+7FxK3Cgl3uAz0aZZLg==",
+      "version": "8.60.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/project-service/-/project-service-8.60.0.tgz",
+      "integrity": "sha512-aZu74NNKJeUWqCjDddzdiKaS82dgYgV/vmf+Ui3ZdZejmgfXR/q+pRumgobnQ2cCJTgGTWp4ypiwsuofFubavg==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@typescript-eslint/tsconfig-utils": "^8.59.4",
-        "@typescript-eslint/types": "^8.59.4",
+        "@typescript-eslint/tsconfig-utils": "^8.60.0",
+        "@typescript-eslint/types": "^8.60.0",
         "debug": "^4.4.3"
       },
       "engines": {
@@ -979,14 +979,14 @@
       }
     },
     "node_modules/@typescript-eslint/scope-manager": {
-      "version": "8.59.4",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/scope-manager/-/scope-manager-8.59.4.tgz",
-      "integrity": "sha512-mUeR/3H1WrTAddJrwut8OoPjfauaztMQmRwV5fQTUyNVJCLiUXXe4lGEyYIL2oFDpP7UtgbGJXCt72wT0z2S3Q==",
+      "version": "8.60.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/scope-manager/-/scope-manager-8.60.0.tgz",
+      "integrity": "sha512-pFzqhllJMs+jghLQWzV00ds39xLzuyqPSev5pd8f4Ir0rtKR3ZLUB4/4dhjOFighWb9larvtfJvqL+4yKDI3Xw==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@typescript-eslint/types": "8.59.4",
-        "@typescript-eslint/visitor-keys": "8.59.4"
+        "@typescript-eslint/types": "8.60.0",
+        "@typescript-eslint/visitor-keys": "8.60.0"
       },
       "engines": {
         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
@@ -997,9 +997,9 @@
       }
     },
     "node_modules/@typescript-eslint/tsconfig-utils": {
-      "version": "8.59.4",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/tsconfig-utils/-/tsconfig-utils-8.59.4.tgz",
-      "integrity": "sha512-DLCpnKgD4alVxTBSKulK+gU1KCqOgUXfDRDXh2mZgzokQKa/70ax93I2uVO3m/LLvIAtWZIFoiifudmIqAxpMA==",
+      "version": "8.60.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/tsconfig-utils/-/tsconfig-utils-8.60.0.tgz",
+      "integrity": "sha512-BZPR3RGYlAXnly6ymAxfkVn5rCbZzQNou0rxv3GfWZ8cTQp+hhVd73khbGLAd8k1TlAPLISH337M+tAgAnaJDQ==",
       "dev": true,
       "license": "MIT",
       "engines": {
@@ -1014,15 +1014,15 @@
       }
     },
     "node_modules/@typescript-eslint/type-utils": {
-      "version": "8.59.4",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/type-utils/-/type-utils-8.59.4.tgz",
-      "integrity": "sha512-uonTuPAAKr9XaBGqJ3LjYTh72zy5DyGesljO9gtmk/eFW0W1fRHjnwVYKB35Lm8d5Q5CluEW3gPHjTvZTmgrfA==",
+      "version": "8.60.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/type-utils/-/type-utils-8.60.0.tgz",
+      "integrity": "sha512-SX46wEUtitCpq7AN38HkUU/+zvUpdKf7ephtWAFgckH8O7PQIyL5gvrhQgBLuEYgLfuKWOVvWVskMbuFHAz5xg==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@typescript-eslint/types": "8.59.4",
-        "@typescript-eslint/typescript-estree": "8.59.4",
-        "@typescript-eslint/utils": "8.59.4",
+        "@typescript-eslint/types": "8.60.0",
+        "@typescript-eslint/typescript-estree": "8.60.0",
+        "@typescript-eslint/utils": "8.60.0",
         "debug": "^4.4.3",
         "ts-api-utils": "^2.5.0"
       },
@@ -1039,9 +1039,9 @@
       }
     },
     "node_modules/@typescript-eslint/types": {
-      "version": "8.59.4",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/types/-/types-8.59.4.tgz",
-      "integrity": "sha512-F1o7WJcCq+bc8dwcO/YsSEOudAH8RDtaOhM6wcAQhcUsFhnWQl81JKy48q1hoxAU0qrzM89+31GYh1515Zde3Q==",
+      "version": "8.60.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/types/-/types-8.60.0.tgz",
+      "integrity": "sha512-AsE7x2XaAK+CVbeih0Fvbn+r1qHxtpLDJ3XUuFcIinT318T90yHMJC+Zgv+jUuDjQQd06HKwxnDu6sz1IcTilA==",
       "dev": true,
       "license": "MIT",
       "engines": {
@@ -1053,16 +1053,16 @@
       }
     },
     "node_modules/@typescript-eslint/typescript-estree": {
-      "version": "8.59.4",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/typescript-estree/-/typescript-estree-8.59.4.tgz",
-      "integrity": "sha512-F+RuOmcDXo4+TPdfd/TCLS3m2nw8gE9XXyZLrA3JBfaA5tz9TtdkyD3YJFmPxulyc2cKbEok/CvFE3MgSLWnag==",
+      "version": "8.60.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/typescript-estree/-/typescript-estree-8.60.0.tgz",
+      "integrity": "sha512-3AcZNBGMClm6CXDyo8kYvVGT/sx29sS0oBsIb9oZI2gunA4Vm2M3YHzRLPvsUBBsl+yB5FPtltq7gGH0iTlp9g==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@typescript-eslint/project-service": "8.59.4",
-        "@typescript-eslint/tsconfig-utils": "8.59.4",
-        "@typescript-eslint/types": "8.59.4",
-        "@typescript-eslint/visitor-keys": "8.59.4",
+        "@typescript-eslint/project-service": "8.60.0",
+        "@typescript-eslint/tsconfig-utils": "8.60.0",
+        "@typescript-eslint/types": "8.60.0",
+        "@typescript-eslint/visitor-keys": "8.60.0",
         "debug": "^4.4.3",
         "minimatch": "^10.2.2",
         "semver": "^7.7.3",
@@ -1081,16 +1081,16 @@
       }
     },
     "node_modules/@typescript-eslint/utils": {
-      "version": "8.59.4",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/utils/-/utils-8.59.4.tgz",
-      "integrity": "sha512-cYXeNAUsG4lJo5dbc1FcKm+JwIWrj1/UpTORsC6tGMjEZ81DYcvIr9/ueikhMa/Y/gDQYGp+YX9/xQrXje5BJw==",
+      "version": "8.60.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/utils/-/utils-8.60.0.tgz",
+      "integrity": "sha512-HtXuPfrHTyBDkameWpl+vJb1Uevu2tznAyahM1Oc4AENidCLTPiZDWIo4GfcxNdC/RcfGcadzzkqbRG87dUrQA==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
         "@eslint-community/eslint-utils": "^4.9.1",
-        "@typescript-eslint/scope-manager": "8.59.4",
-        "@typescript-eslint/types": "8.59.4",
-        "@typescript-eslint/typescript-estree": "8.59.4"
+        "@typescript-eslint/scope-manager": "8.60.0",
+        "@typescript-eslint/types": "8.60.0",
+        "@typescript-eslint/typescript-estree": "8.60.0"
       },
       "engines": {
         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
@@ -1105,13 +1105,13 @@
       }
     },
     "node_modules/@typescript-eslint/visitor-keys": {
-      "version": "8.59.4",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/visitor-keys/-/visitor-keys-8.59.4.tgz",
-      "integrity": "sha512-U3gxVaDVnuZKhSspW/MzMxE1kq7zOdc072FcSNoqA1I9p8HyKbBFfEHoWckBAMgNMph4MamwS5iTVzFmrnt8TQ==",
+      "version": "8.60.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/visitor-keys/-/visitor-keys-8.60.0.tgz",
+      "integrity": "sha512-9WI52t8ZGLVGrPMBet25yAftqY/n95+zmoUUtJBBQTKDSKUu7OsPTroT2op7U9JatkoRccL0YkWDNMFfC4Sjxg==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@typescript-eslint/types": "8.59.4",
+        "@typescript-eslint/types": "8.60.0",
         "eslint-visitor-keys": "^5.0.0"
       },
       "engines": {
@@ -1653,9 +1653,9 @@
       "license": "MIT"
     },
     "node_modules/es-object-atoms": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/es-object-atoms/-/es-object-atoms-1.1.1.tgz",
-      "integrity": "sha512-FGgH2h8zKNim9ljj7dankFPcICIK9Cp5bm+c2gQSYePhpaG5+esrLODihIorn+Pe6FGJzWhXQotPv73jTaldXA==",
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/es-object-atoms/-/es-object-atoms-1.1.2.tgz",
+      "integrity": "sha512-HWcBoN6NileqtSydK2FqHbS/LoDd2pqrnQHLyJzBj4kOp/ky2MWMN694xOfkK8/SnUsW2DH7EfyVlydKCsm1Zw==",
       "license": "MIT",
       "peer": true,
       "dependencies": {
@@ -1947,9 +1947,9 @@
       }
     },
     "node_modules/eventsource-parser": {
-      "version": "3.0.8",
-      "resolved": "https://registry.npmjs.org/eventsource-parser/-/eventsource-parser-3.0.8.tgz",
-      "integrity": "sha512-70QWGkr4snxr0OXLRWsFLeRBIRPuQOvt4s8QYjmUlmlkyTZkRqS7EDVRZtzU3TiyDbXSzaOeF0XUKy8PchzukQ==",
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/eventsource-parser/-/eventsource-parser-3.1.0.tgz",
+      "integrity": "sha512-kJezFj9YFAMLeORyi7aCLxLbD5/qWMQnoMVlVPyHIll7lgRJCc3JVln9Vgl9nwQi0YkMnhdGTMNn7CkRRAptMg==",
       "license": "MIT",
       "peer": true,
       "engines": {
@@ -2300,9 +2300,9 @@
       }
     },
     "node_modules/hasown": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/hasown/-/hasown-2.0.3.tgz",
-      "integrity": "sha512-ej4AhfhfL2Q2zpMmLo7U1Uv9+PyhIZpgQLGT1F9miIGmiCJIoCgSmczFdrc97mWT4kVY72KA+WnnhJ5pghSvSg==",
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/hasown/-/hasown-2.0.4.tgz",
+      "integrity": "sha512-T2UbfbBEF32wiepXIsMlTW9+dDYC6wMh/t/vYA4tuOMKqWz/n3vr1NFSxQiyP+zk2mXsoMA/i/7qV6LKut1t1A==",
       "license": "MIT",
       "peer": true,
       "dependencies": {
@@ -2313,9 +2313,9 @@
       }
     },
     "node_modules/hono": {
-      "version": "4.12.21",
-      "resolved": "https://registry.npmjs.org/hono/-/hono-4.12.21.tgz",
-      "integrity": "sha512-uV63apnb0kyPtAUwoWgaGh9HyIFcv8lgmzPZSiTBQAFOFGIzka5EZ1dZocmGnn0XdX0+XTqJ6Tqv7selMuGLRQ==",
+      "version": "4.12.23",
+      "resolved": "https://registry.npmjs.org/hono/-/hono-4.12.23.tgz",
+      "integrity": "sha512-eIaZ9qDgu7XV0pxOCrg7/WhnQ6Ivm22UcxhXx/A3dcbqbbYgBEkc6e/J/s7j2tS96zoB0S9VBdLwQNCWwUo4LA==",
       "license": "MIT",
       "peer": true,
       "engines": {
@@ -3304,9 +3304,9 @@
       "peer": true
     },
     "node_modules/semver": {
-      "version": "7.8.0",
-      "resolved": "https://registry.npmjs.org/semver/-/semver-7.8.0.tgz",
-      "integrity": "sha512-AcM7dV/5ul4EekoQ29Agm5vri8JNqRyj39o0qpX6vDF2GZrtutZl5RwgD1XnZjiTAfncsJhMI48QQH3sN87YNA==",
+      "version": "7.8.1",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-7.8.1.tgz",
+      "integrity": "sha512-rkVq3IXh+4FDGch+KwzX3aV9W3kO54GyEgpvBzSyctDA6Xtd7RJQV1xmXbeQp5v7+VzLOfVqiutSE6GICgPFvg==",
       "dev": true,
       "license": "ISC",
       "bin": {
@@ -3526,9 +3526,9 @@
       "license": "MIT"
     },
     "node_modules/tinyexec": {
-      "version": "1.1.2",
-      "resolved": "https://registry.npmjs.org/tinyexec/-/tinyexec-1.1.2.tgz",
-      "integrity": "sha512-dAqSqE/RabpBKI8+h26GfLq6Vb3JVXs30XYQjdMjaj/c2tS8IYYMbIzP599KtRj7c57/wYApb3QjgRgXmrCukA==",
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/tinyexec/-/tinyexec-1.2.2.tgz",
+      "integrity": "sha512-M/Q0B2cp4K7kynaT/vnED1j8TlLY+Pp7C6Wl2bl/7u/F0mUVwdyOpwomQb8JpYLitHUssAJRmLZdMCGsrx7i+g==",
       "dev": true,
       "license": "MIT",
       "engines": {
diff --git a/vendor/Claude-agent-acp-upstream/package.json b/vendor/Claude-agent-acp-upstream/package.json
index 644f855c..d737de62 100644
--- a/vendor/Claude-agent-acp-upstream/package.json
+++ b/vendor/Claude-agent-acp-upstream/package.json
@@ -3,7 +3,7 @@
   "publishConfig": {
     "access": "public"
   },
-  "version": "0.37.0",
+  "version": "0.39.0",
   "description": "An ACP-compatible coding agent powered by the Claude Agent SDK (TypeScript)",
   "main": "dist/lib.js",
   "types": "dist/lib.d.ts",
@@ -61,15 +61,15 @@
   "license": "Apache-2.0",
   "dependencies": {
     "@agentclientprotocol/sdk": "0.22.1",
-    "@anthropic-ai/claude-agent-sdk": "0.3.154",
+    "@anthropic-ai/claude-agent-sdk": "0.3.156",
     "zod": "^3.25.0 || ^4.0.0"
   },
   "devDependencies": {
-    "@anthropic-ai/sdk": "0.97.1",
+    "@anthropic-ai/sdk": "0.100.0",
     "@eslint/js": "10.0.1",
     "@types/node": "25.9.1",
-    "@typescript-eslint/eslint-plugin": "8.59.4",
-    "@typescript-eslint/parser": "8.59.4",
+    "@typescript-eslint/eslint-plugin": "8.60.0",
+    "@typescript-eslint/parser": "8.60.0",
     "eslint": "10.4.0",
     "eslint-config-prettier": "10.1.8",
     "globals": "17.6.0",
diff --git a/vendor/Claude-agent-acp-upstream/src/acp-agent.ts b/vendor/Claude-agent-acp-upstream/src/acp-agent.ts
index 4f3974f4..84b5f47c 100644
--- a/vendor/Claude-agent-acp-upstream/src/acp-agent.ts
+++ b/vendor/Claude-agent-acp-upstream/src/acp-agent.ts
@@ -366,9 +366,7 @@ function stripMarkerTags(text: string): string {
       break;
     }
 
-    const tagName = LOCAL_COMMAND_TAG_NAMES.find((name) =>
-      text.startsWith(`<${name}>`, openStart),
-    );
+    const tagName = LOCAL_COMMAND_TAG_NAMES.find((name) => text.startsWith(`<${name}>`, openStart));
 
     if (!tagName) {
       stripped += text.slice(cursor, openStart + 1);
@@ -791,6 +789,13 @@ export class ClaudeAcpAgent implements Agent {
     // forward it to clients as structured `data`, sparing them from
     // pattern-matching on the human-readable message text.
     let lastAssistantError: SDKAssistantMessageError | undefined;
+    // Tracks whether we're inside a compaction. The SDK emits the terminal
+    // `status` (compact_result success/failed) twice for a single failed
+    // compaction, and the two messages are indistinguishable — so we report the
+    // outcome only while a compaction is in progress, then clear this. A fresh
+    // `compacting` status sets it again, so every distinct compaction (e.g.
+    // repeated auto-compactions in a long turn) is still shown.
+    let compactionInProgress = false;
 
     const userMessage = promptToClaude(params);
 
@@ -850,6 +855,7 @@ export class ClaudeAcpAgent implements Agent {
                 break;
               case "status": {
                 if (message.status === "compacting") {
+                  compactionInProgress = true;
                   await this.client.sessionUpdate({
                     sessionId: message.session_id,
                     update: {
@@ -857,6 +863,28 @@ export class ClaudeAcpAgent implements Agent {
                       content: { type: "text", text: "Compacting..." },
                     },
                   });
+                } else if (message.compact_result === "success" && compactionInProgress) {
+                  // The SDK signals manual `/compact` completion with a status
+                  // message carrying `compact_result`, not the `compact_boundary`
+                  // message (which only fires when there's content to compact).
+                  compactionInProgress = false;
+                  await this.client.sessionUpdate({
+                    sessionId: message.session_id,
+                    update: {
+                      sessionUpdate: "agent_message_chunk",
+                      content: { type: "text", text: "\n\nCompacting completed." },
+                    },
+                  });
+                } else if (message.compact_result === "failed" && compactionInProgress) {
+                  compactionInProgress = false;
+                  const reason = message.compact_error ? `: ${message.compact_error}` : ".";
+                  await this.client.sessionUpdate({
+                    sessionId: message.session_id,
+                    update: {
+                      sessionUpdate: "agent_message_chunk",
+                      content: { type: "text", text: `\n\nCompacting failed${reason}` },
+                    },
+                  });
                 }
                 break;
               }
@@ -872,6 +900,10 @@ export class ClaudeAcpAgent implements Agent {
                 // The alternative (no update) leaves the client showing e.g.
                 // "944k/1m" right after the user sees "Compacting completed",
                 // which is confusing and wrong.
+                //
+                // The "Compacting completed." text is emitted from the `status`
+                // handler (keyed on `compact_result`), not here, so the failure
+                // path gets a message too.
                 lastAssistantTotalUsage = 0;
                 lastAssistantUsage = null;
                 await this.client.sessionUpdate({
@@ -882,13 +914,6 @@ export class ClaudeAcpAgent implements Agent {
                     size: session.contextWindowSize,
                   },
                 });
-                await this.client.sessionUpdate({
-                  sessionId: message.session_id,
-                  update: {
-                    sessionUpdate: "agent_message_chunk",
-                    content: { type: "text", text: "\n\nCompacting completed." },
-                  },
-                });
                 break;
               }
               case "local_command_output": {
@@ -1210,6 +1235,7 @@ export class ClaudeAcpAgent implements Agent {
             // payloads (e.g. /compact's malformed output) strip to null and are
             // skipped. Mirrors the replay path at replaySessionHistory.
             if (
+              message.message.role !== "system" &&
               typeof message.message.content === "string" &&
               message.message.content.includes("<local-command-stdout>")
             ) {
@@ -1254,6 +1280,9 @@ export class ClaudeAcpAgent implements Agent {
             ) {
               break;
             }
+            if (message.message.role === "system") {
+              break;
+            }
 
             if (
               message.type === "assistant" &&
@@ -3179,6 +3208,7 @@ export function toAcpNotifications(
       case "compaction":
       case "compaction_delta":
       case "advisor_tool_result":
+      case "mid_conv_system":
         break;
 
       default:
@@ -3246,7 +3276,11 @@ export function streamEventToAcpNotifications(
           taskState: options?.taskState,
         },
       );
-    // No content
+    // No content. `ping` is a Messages-API keep-alive event that the SDK's
+    // `BetaRawMessageStreamEvent` union doesn't include even though the
+    // wire format emits it; the `as never` cast lets us no-op it here
+    // instead of letting it fall through to `unreachable`.
+    case "ping" as never:
     case "message_start":
     case "message_delta":
     case "message_stop":
diff --git a/vendor/Claude-agent-acp-upstream/src/tests/.claude/commands/say-hello.md b/vendor/Claude-agent-acp-upstream/src/tests/.claude/commands/say-hello.md
index 3ec102b7..e5613c38 100644
--- a/vendor/Claude-agent-acp-upstream/src/tests/.claude/commands/say-hello.md
+++ b/vendor/Claude-agent-acp-upstream/src/tests/.claude/commands/say-hello.md
@@ -3,4 +3,4 @@ description: Say hello
 argument-hint: name
 ---
 
-Respond with "Hello $1" and nothing else.
+Respond with "Hello $ARGUMENTS" and nothing else.
diff --git a/vendor/Claude-agent-acp-upstream/src/tests/acp-agent.test.ts b/vendor/Claude-agent-acp-upstream/src/tests/acp-agent.test.ts
index ed328cd4..8cf2227a 100644
--- a/vendor/Claude-agent-acp-upstream/src/tests/acp-agent.test.ts
+++ b/vendor/Claude-agent-acp-upstream/src/tests/acp-agent.test.ts
@@ -32,6 +32,7 @@ import {
   ClaudeAcpAgent,
   claudeCliPath,
   describeAlwaysAllow,
+  streamEventToAcpNotifications,
   type SDKMessageFilter,
 } from "../acp-agent.js";
 import { Pushable } from "../utils.js";
@@ -238,13 +239,15 @@ describe.skipIf(!process.env.RUN_INTEGRATION_TESTS)("ACP subprocess integration"
       name: "compact",
     });
 
-    // Send something
-    await connection.prompt({
-      prompt: [{ type: "text", text: "Hi" }],
-      sessionId: newSessionResponse.sessionId,
-    });
-    // Clear response
-    client.takeReceivedText();
+    // Build up enough conversation that there's something to compact. The SDK
+    // refuses to compact a conversation with too few message groups.
+    for (let i = 0; i < 6; i++) {
+      await connection.prompt({
+        prompt: [{ type: "text", text: `Reply with just the number ${i}.` }],
+        sessionId: newSessionResponse.sessionId,
+      });
+      client.takeReceivedText();
+    }
 
     await connection.prompt({
       prompt: [
@@ -257,7 +260,7 @@ describe.skipIf(!process.env.RUN_INTEGRATION_TESTS)("ACP subprocess integration"
     });
 
     expect(client.takeReceivedText()).toContain("Compacting...\n\nCompacting completed.");
-  }, 30000);
+  }, 60000);
 });
 
 describe("tool conversions", () => {
@@ -662,6 +665,7 @@ describe("tool conversions", () => {
           server_tool_use: null,
           inference_geo: null,
           iterations: null,
+          output_tokens_details: null,
           speed: null,
         },
         context_management: null,
@@ -3882,3 +3886,38 @@ describe("post-error recovery", () => {
     expect(session.pendingMessages.size).toBe(0);
   });
 });
+
+describe("streamEventToAcpNotifications", () => {
+  it("treats `ping` keep-alive events as no-ops without logging to stderr", () => {
+    const errors: unknown[][] = [];
+    const logger = {
+      log: () => {},
+      error: (...args: unknown[]) => {
+        errors.push(args);
+      },
+    };
+    const pingMessage = {
+      type: "stream_event",
+      parent_tool_use_id: null,
+      uuid: randomUUID(),
+      session_id: "test-session",
+      // The SDK's typed `BetaRawMessageStreamEvent` union doesn't include
+      // `ping`, but the API emits it on the wire and the SDK passes it
+      // through. Cast through `unknown` to feed the realistic runtime shape.
+      event: { type: "ping" } as unknown,
+    } as Parameters<typeof streamEventToAcpNotifications>[0];
+
+    const result = streamEventToAcpNotifications(
+      pingMessage,
+      "test-session",
+      {},
+      { sessionUpdate: async () => {} } as unknown as Parameters<
+        typeof streamEventToAcpNotifications
+      >[3],
+      logger,
+    );
+
+    expect(result).toEqual([]);
+    expect(errors).toEqual([]);
+  });
+});
diff --git a/vendor/Claude-agent-acp-upstream/src/tests/authorization.test.ts b/vendor/Claude-agent-acp-upstream/src/tests/authorization.test.ts
index d9a36c7b..2180a920 100644
--- a/vendor/Claude-agent-acp-upstream/src/tests/authorization.test.ts
+++ b/vendor/Claude-agent-acp-upstream/src/tests/authorization.test.ts
@@ -15,7 +15,10 @@ const mockQuery = vi.hoisted(() =>
   })),
 );
 
-vi.mock("@anthropic-ai/claude-agent-sdk", () => ({
+vi.mock("@anthropic-ai/claude-agent-sdk", async () => ({
+  ...(await vi.importActual<typeof import("@anthropic-ai/claude-agent-sdk")>(
+    "@anthropic-ai/claude-agent-sdk",
+  )),
   query: mockQuery,
 }));
 
diff --git a/vendor/README.md b/vendor/README.md
index 6df37493..f63ff3b2 100644
--- a/vendor/README.md
+++ b/vendor/README.md
@@ -52,9 +52,9 @@ That means the directory is intentionally reproducible, but not yet minimal.
     - `vendor/codex-acp/src/subagents.rs`
     - `vendor/codex-acp/src/thread.rs`
 - `Claude-agent-acp-upstream/`
-  - vendored snapshot is currently based on `@agentclientprotocol/claude-agent-acp` `0.37.0`
-  - upstream commit: `36822c2b75b6e1cd5406a5ab40fe603fc380ee10`
-  - local runtime update keeps `@agentclientprotocol/sdk` at `0.22.1` and updates `@anthropic-ai/claude-agent-sdk` to `0.3.154` (Claude Code `2.1.154`)
+  - vendored snapshot is currently based on `@agentclientprotocol/claude-agent-acp` `0.39.0`
+  - upstream commit: `edde96ebafac2ea5d1c879c17459453472d82916`
+  - dependencies match the upstream `0.39.0` release (`@agentclientprotocol/sdk` `0.22.1`, `@anthropic-ai/claude-agent-sdk` `0.3.156`)
   - `dist/` is generated from the upstream source snapshot because the desktop packaging flow depends on it even though upstream does not track it in git
 
 ## Current Codex Delta
@@ -81,13 +81,16 @@ metadata paths that NeverWrite depends on.
 ## Current Claude Delta
 
 The Claude vendor is based on upstream `@agentclientprotocol/claude-agent-acp`
-`0.37.0`, with a narrow local runtime bump to `@anthropic-ai/claude-agent-sdk`
-`0.3.154` so the embedded Claude Code runtime is `2.1.154`.
+`0.39.0` with one bounded NeverWrite-specific source delta.
 
-The only source-level compatibility delta is treating the SDK's
-`thinking_tokens` system event as a no-op. The event is streaming telemetry for
-thinking-token estimates, not assistant content, tool calls, file edits, or final
-usage. `dist/` is rebuilt from the vendored source after applying that delta.
+Upstream `0.39.0` strips local-command metadata with a regular expression that
+GitHub Advanced Security flags as vulnerable to polynomial runtime on
+uncontrolled input. NeverWrite replaces that expression with an equivalent
+linear scanner in `src/acp-agent.ts` and rebuilds `dist/` from that source.
+
+The `dist/` directory is rebuilt from the vendored source snapshot because the
+desktop packaging flow stages the compiled runtime files, while upstream does
+not track generated output in git.
 
 ## Updating Vendored Runtimes