feat(api): add AI text-to-deck generation, wallet deposit structure, and profile/notification endpoints

Fills the gaps between the admin panel screens and the backend: a full
free-text + slide-count + language -> AI-generated presentation flow with
new slide-cloning logic in TemplateFillService, a "my presentations" list
endpoint, a swappable payment-gateway structure for wallet top-ups (fake
driver for now), and avatar upload / public-profile toggle / account
deletion / password change / notification preference endpoints.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

app/Http/Resources/UserResource.php

@@ -5,6 +5,7 @@ namespace App\Http\Resources;
 use App\Models\User;
 use Illuminate\Http\Request;
 use Illuminate\Http\Resources\Json\JsonResource;
+use Illuminate\Support\Facades\Storage;
 use OpenApi\Attributes as OA;
 
 #[OA\Schema(
@@ -15,6 +16,8 @@ use OpenApi\Attributes as OA;
         new OA\Property(property: 'username', type: 'string', example: 'ali'),
         new OA\Property(property: 'email', type: 'string', format: 'email', example: 'ali@example.com'),
         new OA\Property(property: 'mobile', type: 'string', example: '09123456789'),
+        new OA\Property(property: 'avatar_url', type: 'string', example: 'https://example.com/storage/avatars/1.png', nullable: true),
+        new OA\Property(property: 'is_public', type: 'boolean', example: false),
         new OA\Property(property: 'created_at', type: 'string', format: 'date-time'),
     ]
 )]
@@ -32,6 +35,8 @@ class UserResource extends JsonResource
             'username' => $this->username,
             'email' => $this->email,
             'mobile' => $this->mobile,
+            'avatar_url' => $this->avatar_path ? Storage::disk('public')->url($this->avatar_path) : null,
+            'is_public' => $this->is_public,
             'created_at' => $this->created_at?->toIso8601String(),
         ];
     }