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/NotificationPreferenceResource.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace App\Http\Resources;
+
+use App\Models\NotificationPreference;
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\JsonResource;
+use OpenApi\Attributes as OA;
+
+#[OA\Schema(
+    schema: 'NotificationPreference',
+    properties: [
+        new OA\Property(property: 'comment_on_presentation', type: 'boolean', example: true),
+        new OA\Property(property: 'form_reply', type: 'boolean', example: false),
+        new OA\Property(property: 'new_follower', type: 'boolean', example: false),
+        new OA\Property(property: 'news_announcements', type: 'boolean', example: false),
+        new OA\Property(property: 'weekly_product_updates', type: 'boolean', example: true),
+        new OA\Property(property: 'weekly_blog_digest', type: 'boolean', example: false),
+    ]
+)]
+/** @mixin NotificationPreference */
+class NotificationPreferenceResource extends JsonResource
+{
+    /**
+     * @return array<string, mixed>
+     */
+    public function toArray(Request $request): array
+    {
+        return [
+            'comment_on_presentation' => $this->comment_on_presentation,
+            'form_reply' => $this->form_reply,
+            'new_follower' => $this->new_follower,
+            'news_announcements' => $this->news_announcements,
+            'weekly_product_updates' => $this->weekly_product_updates,
+            'weekly_blog_digest' => $this->weekly_blog_digest,
+        ];
+    }
+}