style: apply linter suggestions

static/js/features/library/favorites.js

@@ -104,7 +104,7 @@ const favorites = {
             await this._fetchFromServer();
 
             // Notify user
-            if (window.ui && window.ui.showNotification) {
+            if (window.ui?.showNotification) {
                 window.ui.showNotification(
                     window.i18n ? window.i18n.t('favorites.added_title') : 'Added to favorites',
                     `"${name}" ${window.i18n ? window.i18n.t('favorites.added_msg') : 'added to favorites'}`
@@ -139,7 +139,7 @@ const favorites = {
             // Remove from local cache
             this._cache.delete(this._cacheKey(id, type));
 
-            if (window.ui && window.ui.showNotification) {
+            if (window.ui?.showNotification) {
                 window.ui.showNotification(
                     window.i18n ? window.i18n.t('favorites.removed_title') : 'Removed from favorites',
                     `"${itemName}" ${window.i18n ? window.i18n.t('favorites.removed_msg') : 'removed from favorites'}`
@@ -208,7 +208,7 @@ const favorites = {
             if (files.length) window.ui.renderFiles(files);
         } catch (error) {
             console.error('Error displaying favorites:', error);
-            if (window.ui && window.ui.showNotification) {
+            if (window.ui?.showNotification) {
                 window.ui.showNotification('Error', 'Error loading favorite items');
             }
         }

static/js/features/library/photos.js

@@ -207,7 +207,7 @@ const photosView = {
             if (existingHeader) {
                 // Append tiles to existing grid and update count badge
                 const grid = existingHeader.nextElementSibling;
-                if (grid && grid.classList.contains('photos-grid')) {
+                if (grid?.classList.contains('photos-grid')) {
                     grid.insertAdjacentHTML('beforeend', tilesHtml);
                     const countSpan = existingHeader.querySelector('.photos-day-count');
                     if (countSpan) countSpan.textContent = grid.children.length;
@@ -228,7 +228,7 @@ const photosView = {
 
     /** Generate HTML for a single photo/video tile */
     _renderTile(file) {
-        const isVideo = file.mime_type && file.mime_type.startsWith('video/');
+        const isVideo = file.mime_type?.startsWith('video/');
         const selected = this.selected.has(file.id) ? ' selected' : '';
         const cachedThumb = isVideo && this._videoThumbCache.has(file.id) ? this._videoThumbCache.get(file.id) : null;
         const thumbUrl = cachedThumb || `/api/files/${file.id}/thumbnail/preview`;
@@ -359,7 +359,7 @@ const photosView = {
                         // Upload to server for permanent caching
                         const token = localStorage.getItem('token') || sessionStorage.getItem('token');
                         const headers = { 'Content-Type': blob.type, ...getCsrfHeaders() };
-                        if (token) headers['Authorization'] = `Bearer ${token}`;
+                        if (token) headers.Authorization = `Bearer ${token}`;
 
                         fetch(`/api/files/${fileId}/thumbnail/preview`, {
                             method: 'PUT',
@@ -527,7 +527,9 @@ const photosView = {
 
         bar.querySelector('#photos-sel-clear').onclick = () => {
             this.selected.clear();
-            this._container.querySelectorAll('.photo-tile.selected').forEach((t) => t.classList.remove('selected'));
+            this._container.querySelectorAll('.photo-tile.selected').forEach((t) => {
+                t.classList.remove('selected');
+            });
             this._hideSelectionBar();
         };
 

static/js/features/library/photosLightbox.js

@@ -139,7 +139,7 @@ const photosLightbox = {
         content.innerHTML = '<div class="photos-loading"><i class="fas fa-spinner"></i></div>';
 
         try {
-            const isVideo = item.mime_type && item.mime_type.startsWith('video/');
+            const isVideo = item.mime_type?.startsWith('video/');
             const res = await fetch(`/api/files/${item.id}`, {
                 credentials: 'include',
                 headers: this._headers()
@@ -172,7 +172,7 @@ const photosLightbox = {
             });
             if (res.ok) {
                 const data = await res.json();
-                let parts = [dateStr];
+                const parts = [dateStr];
                 if (sizeStr) parts.push(sizeStr);
                 if (data.camera_make || data.camera_model) {
                     parts.push([data.camera_make, data.camera_model].filter(Boolean).join(' '));
@@ -182,7 +182,7 @@ const photosLightbox = {
                 }
                 metaEl.textContent = parts.join(' · ');
             }
-        } catch (err) {
+        } catch (_err) {
             // Non-critical, keep existing meta
         }
     },

static/js/features/library/recent.js

@@ -32,7 +32,7 @@ const recent = {
      */
     setupEventListeners() {
         document.addEventListener('file-accessed', (event) => {
-            if (event.detail && event.detail.file) {
+            if (event.detail?.file) {
                 const file = event.detail.file;
                 const itemType = file.item_type || 'file';
                 this._recordAccess(file.id, itemType);
@@ -144,7 +144,7 @@ const recent = {
             if (files.length) window.ui.renderFiles(files);
         } catch (error) {
             console.error('Error displaying recent files:', error);
-            if (window.ui && window.ui.showNotification) {
+            if (window.ui?.showNotification) {
                 window.ui.showNotification('Error', 'Error loading recent files');
             }
         }