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/app/Channels/WebhookChannel.php

@@ -3,10 +3,10 @@
 namespace App\Channels;
 
 use App\Enums\Presence;
-use App\Http\Controllers\Api\EventsController as Presenter;
 use App\Models\Delivery;
 use App\Models\Event;
 use App\Models\User;
+use App\Presenters\EventPresenter;
 use Illuminate\Support\Facades\Http;
 use Throwable;
 
@@ -48,7 +48,7 @@ final class WebhookChannel implements ChannelDriver
     /** @return array<string,mixed> */
     public static function payload(Event $event, Delivery $delivery): array
     {
-        $presented = Presenter::present($event);
+        $presented = EventPresenter::forClient($event);
 
         return [
             'event' => [