chore(main): release 0.89.0 (#1279)

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


##
[0.89.0](https://github.com/agentclientprotocol/claude-agent-acp/compare/v0.88.0...v0.89.0)
(2026-10-09)


### Features

* add the AIR sessionIndex extension for fast session lists
([#1268](https://github.com/agentclientprotocol/claude-agent-acp/issues/1268))
([03d84f6](03d84f6663))
* **deps:** Bump @agentclientprotocol/sdk to 1.8.0
([#1287](https://github.com/agentclientprotocol/claude-agent-acp/issues/1287))
([446a721](446a7217fa))
* Support custom instructions for agent sessions via meta
([#1177](https://github.com/agentclientprotocol/claude-agent-acp/issues/1177))
([908c994](908c994901))


### Bug Fixes

* recreate live sessions on logout when it clears a provider or gateway
override
([#1278](https://github.com/agentclientprotocol/claude-agent-acp/issues/1278))
([966be7a](966be7abe6))
* report a failed turn with the error stop reason on the experimental
ACP v2 surface
([#1288](https://github.com/agentclientprotocol/claude-agent-acp/issues/1288))
([060bdb2](060bdb212a))
* report an interrupted tool call as cancelled on the experimental ACP
v2 surface
([#1289](https://github.com/agentclientprotocol/claude-agent-acp/issues/1289))
([55c3106](55c3106c60))

---
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>

.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  ".": "0.88.0"
+  ".": "0.89.0"
 }

CHANGELOG.md

@@ -1,5 +1,21 @@
 # Changelog
 
+## [0.89.0](https://github.com/agentclientprotocol/claude-agent-acp/compare/v0.88.0...v0.89.0) (2026-10-09)
+
+
+### Features
+
+* add the AIR sessionIndex extension for fast session lists ([#1268](https://github.com/agentclientprotocol/claude-agent-acp/issues/1268)) ([03d84f6](https://github.com/agentclientprotocol/claude-agent-acp/commit/03d84f6663a2f561b3c59bc30e622e085b869024))
+* **deps:** Bump @agentclientprotocol/sdk to 1.8.0 ([#1287](https://github.com/agentclientprotocol/claude-agent-acp/issues/1287)) ([446a721](https://github.com/agentclientprotocol/claude-agent-acp/commit/446a7217fa2654a9bcfaff9ddbfcdf2917cef024))
+* Support custom instructions for agent sessions via meta ([#1177](https://github.com/agentclientprotocol/claude-agent-acp/issues/1177)) ([908c994](https://github.com/agentclientprotocol/claude-agent-acp/commit/908c994901b857918c23655670468298f6bbd33b))
+
+
+### Bug Fixes
+
+* recreate live sessions on logout when it clears a provider or gateway override ([#1278](https://github.com/agentclientprotocol/claude-agent-acp/issues/1278)) ([966be7a](https://github.com/agentclientprotocol/claude-agent-acp/commit/966be7abe60435f2f1c6379a5255ea7d533a1a20))
+* report a failed turn with the error stop reason on the experimental ACP v2 surface ([#1288](https://github.com/agentclientprotocol/claude-agent-acp/issues/1288)) ([060bdb2](https://github.com/agentclientprotocol/claude-agent-acp/commit/060bdb212a9354f2dd0c88e4234a7659aeb6d27e))
+* report an interrupted tool call as cancelled on the experimental ACP v2 surface ([#1289](https://github.com/agentclientprotocol/claude-agent-acp/issues/1289)) ([55c3106](https://github.com/agentclientprotocol/claude-agent-acp/commit/55c3106c60f58909af76f75df9f6c5815dcf0021))
+
 ## [0.88.0](https://github.com/agentclientprotocol/claude-agent-acp/compare/v0.87.0...v0.88.0) (2026-10-08)
 
 

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "@agentclientprotocol/claude-agent-acp",
-  "version": "0.88.0",
+  "version": "0.89.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@agentclientprotocol/claude-agent-acp",
-      "version": "0.88.0",
+      "version": "0.89.0",
       "license": "Apache-2.0",
       "dependencies": {
         "@agentclientprotocol/sdk": "1.8.0",

package.json

@@ -3,7 +3,7 @@
   "publishConfig": {
     "access": "public"
   },
-  "version": "0.88.0",
+  "version": "0.89.0",
   "description": "An ACP-compatible coding agent powered by the Claude Agent SDK (TypeScript)",
   "main": "dist/lib.js",
   "types": "dist/lib.d.ts",