refactor: single EventPresenter and ManualEvents shared by /api, /me, inbox, webhook; editable flag

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BCrwHHnGCB5XH968Nxokqw

core/composer.json

@@ -8,6 +8,7 @@
     "require": {
         "php": "^8.3",
         "laravel/framework": "^13.17",
+        "laravel/mcp": "^0.9.4",
         "laravel/tinker": "^3.0"
     },
     "require-dev": {