feat: implement feedback filter for liked/favorited photos (Issue #17)

Implemented Feature Request 1 from github.com/the-luap/picpeak/issues/17:
- Added filter functionality to display only liked or favorited photos
- Integrated feedback filter directly into PhotoFilterBar component
- Implemented responsive design with proper mobile/tablet/desktop layouts
- Filter only shows when feedback is enabled for the gallery
- Added proper count display for liked and favorited photos

Improvements:
- Fixed responsive breakpoints (mobile <768px, tablet 768-1023px, desktop ≥1024px)
- Feedback filter shows inline with categories on desktop with vertical divider
- On mobile/tablet, filter appears below categories to prevent layout issues
- Added horizontal scrolling for category buttons to prevent cut-off

Code cleanup:
- Removed all debug console.log statements from production code
- Removed test route from backend gallery.js
- Cleaned up unnecessary logging in frontend components

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

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

backend/src/routes/gallery.js

@@ -97,12 +97,42 @@ router.get('/:slug/info', async (req, res) => {
 // Get all photos
 router.get('/:slug/photos', verifyGalleryAccess, async (req, res) => {
   try {
+    // Get filter parameters from query
+    const { filter, guest_id } = req.query;
+    const feedbackService = require('../services/feedbackService');
+    
     // First get all photos
-    const photos = await db('photos')
+    let photos = await db('photos')
       .where('photos.event_id', req.event.id)
       .select('photos.*')
       .orderBy('photos.uploaded_at', 'desc');
     
+    // Apply filtering if requested
+    if (filter && guest_id) {
+      let filters = {};
+      
+      // Parse filter parameter
+      if (filter === 'liked') {
+        filters.liked = true;
+      } else if (filter === 'favorited') {
+        filters.favorited = true;
+      } else if (filter === 'liked,favorited' || filter === 'favorited,liked') {
+        filters.liked = true;
+        filters.favorited = true;
+        filters.operator = 'OR';
+      }
+      
+      // Get filtered photo IDs
+      const filteredPhotoIds = await feedbackService.getFilteredPhotos(
+        req.event.id,
+        guest_id,
+        filters
+      );
+      
+      // Filter photos to only include those with feedback
+      photos = photos.filter(photo => filteredPhotoIds.includes(photo.id));
+    }
+    
     // Then get comment counts separately
     const commentCounts = await db('photo_feedback')
       .whereIn('photo_id', photos.map(p => p.id))
@@ -150,13 +180,6 @@ router.get('/:slug/photos', verifyGalleryAccess, async (req, res) => {
       overlay_protection: req.event.overlay_protection !== false
     };
     
-    console.log('[Gallery Photos] Event data:', {
-      id: req.event.id,
-      slug: req.params.slug,
-      protection_level: req.event.protection_level,
-      calculated_protection: protectionSettings.protection_level,
-      is_basic_or_standard: (protectionSettings.protection_level === 'basic' || protectionSettings.protection_level === 'standard')
-    });
 
     res.json({
       event: {
@@ -181,8 +204,6 @@ router.get('/:slug/photos', verifyGalleryAccess, async (req, res) => {
           `/api/gallery/${req.params.slug}/photo/${photo.id}` : 
           `/api/secure-images/${req.params.slug}/secure/${photo.id}/{{token}}`;
         
-        console.log(`[Photo ${photo.id}] Protection: ${protectionSettings.protection_level}, Use JWT: ${useJwtUrl}, URL: ${photoUrl}`);
-        
         return {
           id: photo.id,
           filename: photo.filename,
@@ -363,14 +384,6 @@ router.get('/:slug/download-all', verifyGalleryAccess, async (req, res) => {
   }
 });
 
-// Test route
-router.get('/:slug/photo-test/:photoId', 
-  verifyGalleryAccess,
-  (req, res) => {
-    console.log('TEST ROUTE EXECUTED!');
-    res.json({ message: 'Test route works!', photoId: req.params.photoId });
-  }
-);
 
 // View single photo (with watermark if enabled)
 router.get('/:slug/photo/:photoId',