Complete 4.4.1: Mobile Gesture Support - Add pull-to-refresh indicator and mark task complete

UI_UPDATE.MD

@@ -508,10 +508,12 @@ All utilities follow the established pattern of using CSS custom properties from
 
 ### Sub-task 4.4: Gesture and Touch Interactions
 
-#### 4.4.1: Mobile Gesture Support
-- [ ] Add swipe gestures for chat toggling
-- [ ] Implement pull-to-refresh functionality
-- [ ] Create touch-based video controls
+#### 4.4.1: Mobile Gesture Support - COMPLETED 9/29/2025
+- [x] Add swipe gestures for chat toggling
+- [x] Implement pull-to-refresh functionality
+- [x] Create touch-based video controls
+
+**Notes:** Comprehensive mobile gesture system fully implemented. Swipe gestures on video area toggle chat on mobile (swipe left to hide, right to show). Pull-to-refresh functionality added with visual indicator showing on mobile when pulling down from top of page. Touch-based video controls include double-tap on video for fullscreen toggle and swipe gestures on tablets for seek forward/backward (10 seconds). All gestures are device-aware and won't conflict with desktop interactions.
 
 ### Sub-task 4.5: Accessibility Enhancements
 

index.php

@@ -495,6 +495,16 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['action'])) {
         </aside>
     </main>
 
+    <!-- Pull-to-refresh indicator for mobile -->
+    <div id="pullRefreshIndicator" class="pull-refresh-indicator" aria-hidden="true" style="display: none;">
+        <div class="pull-refresh-content">
+            <svg width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
+                <path d="M21 12a9 9 0 1 1-6.219-8.56"></path>
+            </svg>
+            <span>Pull to refresh</span>
+        </div>
+    </div>
+
     <!-- Enhanced Notification System -->
     <div class="notifications-container" role="region" aria-live="assertive" aria-label="Notifications" id="notificationsContainer"></div>