chore(main): release 0.91.0 (#1333)

🤖 I have created a release *beep* *boop*
---


##
[0.91.0](https://github.com/agentclientprotocol/claude-agent-acp/compare/v0.90.0...v0.91.0)
(2026-10-15)


### Features

* keep background subagents running after a parent cancel, for clients
that can cancel them
([#1348](https://github.com/agentclientprotocol/claude-agent-acp/issues/1348))
([ba3c7be](ba3c7be05e))
* let a client cancel one subagent with session/cancel on its child
session
([#1347](https://github.com/agentclientprotocol/claude-agent-acp/issues/1347))
([aeb69e7](aeb69e7ed1))
* mark session list rows of worktrees Claude Code made (agentWorktree)
([#1352](https://github.com/agentclientprotocol/claude-agent-acp/issues/1352))
([1a1f1a0](1a1f1a0e80))
* narrow models to what the providers/set gateway lists
([#1340](https://github.com/agentclientprotocol/claude-agent-acp/issues/1340))
([e8eb9d3](e8eb9d340f))
* restore a subagent from before a reload when SendMessage resumes it,
for subagents RFD clients
([#1332](https://github.com/agentclientprotocol/claude-agent-acp/issues/1332))
([df21b3f](df21b3fb56))


### Bug Fixes

* close the tool calls of a background subagent that the SDK reports
stopped after a cancel
([#1336](https://github.com/agentclientprotocol/claude-agent-acp/issues/1336))
([9a1b90f](9a1b90fb9d))
* close the tool calls of a cycle that Claude Code started and a cancel
stopped
([#1339](https://github.com/agentclientprotocol/claude-agent-acp/issues/1339))
([1fd217f](1fd217f3e7))
* close the tool calls that a cycle Claude Code started abandoned, at
its end
([#1344](https://github.com/agentclientprotocol/claude-agent-acp/issues/1344))
([594aa8c](594aa8c955))
* deliver the output of a background subagent that a cancel did not stop
([#1345](https://github.com/agentclientprotocol/claude-agent-acp/issues/1345))
([bcc024d](bcc024d2c9))
* end the terminal of a command whose tool call is closed without a
result
([#1335](https://github.com/agentclientprotocol/claude-agent-acp/issues/1335))
([764f339](764f339c3e))
* end the tool calls of a cycle that Claude Code started and a cancel
stopped, on v1
([#1342](https://github.com/agentclientprotocol/claude-agent-acp/issues/1342))
([b4788d6](b4788d61ea))
* keep a live session that was never prompted when a resume or load
changes its settings
([#1353](https://github.com/agentclientprotocol/claude-agent-acp/issues/1353))
([0c8de13](0c8de1380f))
* let session/delete succeed for a session without a transcript
([#1351](https://github.com/agentclientprotocol/claude-agent-acp/issues/1351))
([fadbe18](fadbe1881c))
* report no running for the session's own request that a cancel
withdraws, on ACP v2
([#1346](https://github.com/agentclientprotocol/claude-agent-acp/issues/1346))
([d528647](d528647162))
* show nothing of a tool that cancelled work asks to run after the
cancel was reported
([#1334](https://github.com/agentclientprotocol/claude-agent-acp/issues/1334))
([ebf8b49](ebf8b49fd6))
* stop waiting for a question the client leaves open after Claude Code
cancels it
([#1338](https://github.com/agentclientprotocol/claude-agent-acp/issues/1338))
([c1e83b4](c1e83b46b7))
* update Claude Agent SDK to 0.3.300
([#1355](https://github.com/agentclientprotocol/claude-agent-acp/issues/1355))
([761b4c8](761b4c8359))

---
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>

package.json

@@ -3,7 +3,7 @@
   "publishConfig": {
     "access": "public"
   },
-  "version": "0.90.0",
+  "version": "0.91.0",
   "description": "An ACP-compatible coding agent powered by the Claude Agent SDK (TypeScript)",
   "main": "dist/lib.js",
   "types": "dist/lib.d.ts",