Fix countdown timer: poll timer state periodically and send updates to overlay

web/overlay-controller.js

@@ -571,6 +571,13 @@ class WebOverlayController {
                 }
             }
             
+            // Also fetch timer state on each poll
+            const timerState = await this.fetchTimerState();
+            if (timerState && (timerState.running || this.timerState.running)) {
+                // Send timer update if timer is running or was running
+                this.sendMessageToOverlay('timerUpdate', timerState);
+            }
+            
             return response;
         } catch (error) {
             console.error('[OverlayController] Failed to fetch overlay data:', error);