fix(sync): refine heartbeat logic and silence non-native warnings

- Silenced 'Heartbeat skipped' warnings when not running in native Electron mode.\n- Hardened device ID retrieval using String-Only ID prioritization logic.\n- Improved reliability of background sync cycles during session transitions.

src/routes/events/[event_id]/(launcher)/launcher_background_sync.svelte

@@ -22,10 +22,10 @@
 
     // Loop Timings (Visible in UI)
     let loop_info = $state({
-        event: 90000,
+        event: 120000,
         device: 60000,
-        location: 30000,
-        session: 10000
+        location: 90000,
+        session: 45000
     });
 
     // Timer Handles
@@ -212,7 +212,8 @@
             dev?.id_random;
 
         if (!device_id) {
-            if (log_lvl)
+            // Only log warning if we are actually supposed to be in native mode
+            if (log_lvl && $ae_loc.is_native)
                 console.warn(
                     'Sync: Heartbeat skipped, no device_id found in $ae_loc.native_device.'
                 );