feat(launcher): implement device heartbeat and background sync engine

- Hardened 'find_object_id' in Dexie to support 'event_' prefixed IDs.
- Implemented singleton 'LauncherBackgroundSync' in root launcher layout.
- Added V3-compliant heartbeat and room refresh cycles.
- Fixed redundant component imports and Skeleton UI prop errors.
- Added 'inc_file_li' support to event API loader.

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

@@ -47,7 +47,7 @@
         events_trigger,
         events_trig
     } from '$lib/stores/ae_events_stores';
-    // import { events_func } from '$lib/ae_events_functions';
+    import { events_func } from '$lib/ae_events_functions';
 
     import Launcher_cfg from '../launcher_cfg.svelte';
     import Launcher_menu from '../launcher_menu.svelte';
@@ -1222,7 +1222,6 @@
 </div>
 
 <Drawer
-    bgColor="bg-blue"
     class="bg-orange-100 opacity-90 hover:opacity-97 transition-all duration-1000 border border-gray-300 dark:border-gray-600"
     placement="left"
     transitionType="fly"
@@ -1231,7 +1230,6 @@
         duration: 200,
         easing: sineIn
     }}
-    width={'w-md'}
     bind:hidden={$events_loc.launcher.hide_drawer__cfg}
     id="sidebar1"
 >
@@ -1276,7 +1274,6 @@
 
 <Drawer
     activateClickOutside={false}
-    backdrop={false}
     class="bg-red-100 opacity-75 hover:opacity-95 transition-all duration-1000"
     placement="bottom"
     transitionType="fly"
@@ -1285,7 +1282,6 @@
         duration: 200,
         easing: sineIn
     }}
-    width={'min-h-96 h-1/2'}
     bind:hidden={$events_loc.launcher.hide_drawer__debug}
     id="sidebar2"
 >
@@ -1321,7 +1317,6 @@
     open={$events_sess.launcher?.modal__open_event_file_id}
     autoclose={false}
     placement="top-center"
-    size=""
     class="
         bg-gray-500/90 dark:bg-gray-800/90 text-gray-800 dark:text-gray-200
         rounded-lg border-gray-200 dark:border-gray-700