Update changelog.md for version 0.0.402

Author: github-actions[bot]

changelog.md

@@ -1,3 +1,14 @@
+## 0.0.402 - 2026-02-03
+
+- ACP server supports agent and plan session modes
+- MCP configuration applies to ACP mode
+- Agent creation wizard styling improvements
+- Custom agents with unknown fields load with warnings instead of errors
+- Custom agents receive environment context when run as subagents
+- Plugins can provide hooks for session lifecycle events
+- Plugin update command works for direct plugins and handles Windows file locks
+- Stop MCP servers when uninstalling plugins
+
 ## 0.0.401 - 2026-02-03
 
 - Support `.agents/skills` directory for auto-loading skills