button battery level warning

sw.js

@@ -75,7 +75,11 @@ self.addEventListener('push', event => {
   let pushData = {
     title: 'Flic Action',
     body: 'Button pressed!',
-    data: { action: 'Unknown', button: 'Unknown' } // Default data
+    data: { 
+      action: 'Unknown', 
+      button: 'Unknown',
+      batteryLevel: undefined
+    }
   };
 
   // --- Attempt to parse data payload ---
@@ -88,10 +92,9 @@ self.addEventListener('push', event => {
       pushData = {
         title: parsedData.title || pushData.title,
         body: parsedData.body || pushData.body,
-        // IMPORTANT: Extract the action details sent from your backend
-        data: parsedData.data || pushData.data // Expecting { action: 'SingleClick', button: '...' }
+        data: parsedData.data || pushData.data // Expecting { action: 'SingleClick', button: 'game-button', batteryLevel: 75 }
       };
-
+      
     } catch (e) {
       console.error('[ServiceWorker] Error parsing push data:', e);
       // Use default notification if parsing fails
@@ -106,7 +109,8 @@ self.addEventListener('push', event => {
     type: 'flic-action', // Custom message type
     action: pushData.data.action, // e.g., 'SingleClick', 'DoubleClick', 'Hold'
     button: pushData.data.button,  // e.g., the button name
-    timestamp: pushData.data.timestamp // e.g., the timestamp of the action
+    timestamp: pushData.data.timestamp, // e.g., the timestamp of the action
+    batteryLevel: pushData.data.batteryLevel // e.g., the battery level percentage
   };
 
   // Send message to all open PWA windows controlled by this SW