feat: MCP tools for events (list/get/create/update/delete/done/ack); EventRules shared by /api and manual

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

core/app/Http/Controllers/Api/EventsController.php

@@ -2,7 +2,6 @@
 
 namespace App\Http\Controllers\Api;
 
-use App\Enums\EventState;
 use App\Http\Controllers\Controller;
 use App\Http\Requests\UpsertEventsRequest;
 use App\Ingest\EventUpserter;
@@ -34,8 +33,7 @@ class EventsController extends Controller
 
     public function destroy(Request $request): Response
     {
-        $event = $this->lookup($request);
-        $event->update(['state' => EventState::Withdrawn]);
+        $this->upserter->withdraw($this->lookup($request));
 
         return response()->noContent();
     }