Sync Claude ACP vendor to 0.39.0

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

vendor/Claude-agent-acp-upstream/.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  ".": "0.37.0"
+  ".": "0.39.0"
 }

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)