feat: action links, telegram webhook and channels API

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

core/app/Http/Controllers/ActionController.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Delivery\EventActions;
+use App\Models\Delivery;
+use App\Models\Event;
+use Illuminate\Http\JsonResponse;
+
+/** Кнопки из каналов: подписанные ссылки по action_token доставки. Без SSO и CSRF. */
+class ActionController extends Controller
+{
+    public function __construct(private readonly EventActions $actions) {}
+
+    public function ack(string $token): JsonResponse
+    {
+        $event = $this->eventFor($token);
+        $this->actions->ack($event);
+
+        return response()->json(['state' => $event->fresh()->state->value]);
+    }
+
+    public function done(string $token): JsonResponse
+    {
+        $event = $this->eventFor($token);
+        $this->actions->done($event);
+
+        return response()->json(['state' => $event->fresh()->state->value]);
+    }
+
+    private function eventFor(string $token): Event
+    {
+        $delivery = Delivery::where('action_token', $token)->with('event.user')->first();
+        abort_if($delivery === null, 404, 'Неизвестный токен');
+        abort_if($delivery->event->isTerminal(), 410, 'Событие уже закрыто');
+
+        return $delivery->event;
+    }
+}