chore(main): release 0.60.0 (#884)

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


##
[0.60.0](https://github.com/agentclientprotocol/claude-agent-acp/compare/v0.59.0...v0.60.0)
(2026-07-20)


### Features

* **deps:** Update to claude-agent-sdk 0.3.215
([#890](https://github.com/agentclientprotocol/claude-agent-acp/issues/890))
([92548f0](92548f0435))
* implement configurable LLM providers
([#853](https://github.com/agentclientprotocol/claude-agent-acp/issues/853))
([82cd692](82cd692e50))


### Bug Fixes

* parse Agent/Task trailers without regex
([#879](https://github.com/agentclientprotocol/claude-agent-acp/issues/879))
([06c3d7b](06c3d7bdbd))
* remove ~15s stall on session/new and model switch by seeding the
context window synchronously
([#894](https://github.com/agentclientprotocol/claude-agent-acp/issues/894))
([ff9b96d](ff9b96d462))
* Silence missing PostToolUse callbacks
([#895](https://github.com/agentclientprotocol/claude-agent-acp/issues/895))
([1887ada](1887ada215)),
closes
[#889](https://github.com/agentclientprotocol/claude-agent-acp/issues/889)

---
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 @@
 {
-  ".": "0.59.0"
+  ".": "0.60.0"
 }