feat: implement gallery feedback system with version tracking for backups

Gallery Feedback Features:
- Add feedback system allowing ratings, likes, comments, and favorites on photos
- Implement admin controls for enabling/disabling feedback per event
- Add content moderation with word filters and spam detection
- Implement rate limiting to prevent abuse (10 requests/15min per type)
- Create comprehensive admin interface for feedback management
- Add analytics dashboard for feedback insights
- Export feedback data when archiving events

Frontend Components:
- PhotoRating: 5-star rating system with optimistic updates
- PhotoLikes: Like/unlike with animation
- PhotoComments: Threaded comments with moderation
- PhotoFavorites: Bookmark functionality
- FeedbackSettings: Admin configuration panel
- EventFeedbackPage: Complete management interface

Backend Implementation:
- Database migration 033: 4 new tables for feedback system
- RESTful API with proper authorization
- Guest identification via SHA256(IP+UserAgent)
- Automatic backup integration
- Email notification support

Backup Version Tracking:
- Migration 034: Add version columns to backup tables
- Track app version, Node.js version, and DB schema version
- Create restore_history table for tracking restore attempts
- Add version compatibility checking for safe restores
- Configurable version matching requirements

Security & Performance:
- Input validation and sanitization
- Rate limiting per feedback type
- Content moderation system
- Optimistic UI updates
- Efficient database queries with proper indexes

🤖 Generated with [Claude Code](https://claude.ai/code)

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

frontend/src/pages/admin/CreateEventPageEnhanced.tsx

@@ -14,7 +14,7 @@ import { addDays } from 'date-fns';
 import { toast } from 'react-toastify';
 
 import { Button, Input, Card } from '../../components/common';
-import { ThemeCustomizerEnhanced, GalleryPreview, WelcomeMessageEditor } from '../../components/admin';
+import { ThemeCustomizerEnhanced, GalleryPreview, WelcomeMessageEditor, FeedbackSettings } from '../../components/admin';
 import { useMutation, useQuery } from '@tanstack/react-query';
 import { eventsService } from '../../services/events.service';
 import { useLocalizedDate } from '../../hooks/useLocalizedDate';
@@ -38,6 +38,19 @@ interface FormData {
   expires_in_days: number;
   allow_user_uploads: boolean;
   upload_category_id: number | null;
+  feedback_settings: {
+    feedback_enabled: boolean;
+    allow_ratings: boolean;
+    allow_likes: boolean;
+    allow_comments: boolean;
+    allow_favorites: boolean;
+    require_name_email: boolean;
+    moderate_comments: boolean;
+    show_feedback_to_guests: boolean;
+    enable_rate_limiting: boolean;
+    rate_limit_window_minutes?: number;
+    rate_limit_max_requests?: number;
+  };
 }
 
 const EVENT_TYPE_PRESETS: Record<string, string> = {
@@ -83,6 +96,19 @@ export const CreateEventPageEnhanced: React.FC = () => {
     expires_in_days: 30,
     allow_user_uploads: false,
     upload_category_id: null,
+    feedback_settings: {
+      feedback_enabled: false,
+      allow_ratings: true,
+      allow_likes: true,
+      allow_comments: true,
+      allow_favorites: true,
+      require_name_email: false,
+      moderate_comments: true,
+      show_feedback_to_guests: true,
+      enable_rate_limiting: true,
+      rate_limit_window_minutes: 15,
+      rate_limit_max_requests: 10,
+    },
   });
   
   const [errors, setErrors] = useState<Partial<Record<keyof FormData, string>>>({});
@@ -218,6 +244,7 @@ export const CreateEventPageEnhanced: React.FC = () => {
       expiration_days: formData.expires_in_days,
       allow_user_uploads: formData.allow_user_uploads,
       upload_category_id: formData.upload_category_id,
+      feedback_settings: formData.feedback_settings,
     };
     
     console.log('Submitting payload:', payload);
@@ -553,6 +580,12 @@ export const CreateEventPageEnhanced: React.FC = () => {
           </div>
         </Card>
 
+        {/* Feedback Settings */}
+        <FeedbackSettings
+          settings={formData.feedback_settings}
+          onChange={(settings) => setFormData(prev => ({ ...prev, feedback_settings: settings }))}
+        />
+
         {/* Form Actions */}
         <div className="flex items-center justify-end gap-3">
           <Button