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/Ingest/EventUpserter.php

@@ -38,15 +38,10 @@ final class EventUpserter
         });
     }
 
-    public function withdraw(Source $source, string $sourceRef, string $topic): bool
+    /** Снять событие: withdrawn — терминальное, ядро больше не напоминает. */
+    public function withdraw(Event $event): void
     {
-        $event = $this->find($source, $sourceRef, $topic);
-        if ($event === null) {
-            return false;
-        }
         $event->update(['state' => EventState::Withdrawn]);
-
-        return true;
     }
 
     public function find(Source $source, string $sourceRef, string $topic): ?Event