Bump version to 0.4.10

- Update CLAUDE.md with new APIs and file structure
- Remove unused helper functions (isAgentSwitchEnabled, isPlanSaveEnabled)
- Sync all package versions to 0.4.10

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

packages/server/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@plannotator/server",
-  "version": "0.4.8",
+  "version": "0.4.10",
   "private": true,
   "description": "Shared server implementation for Plannotator plugins",
   "main": "index.ts",