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/lib/ae_core/core__idb_dexie.ts

@@ -13,7 +13,14 @@ function find_object_id(
     table_name: string,
     log_lvl: number
 ): string | number | undefined {
-    const potential_keys = ['id', 'id_random', `${table_name}_id`, `${table_name}_id_random`];
+    const potential_keys = [
+        'id', 
+        'id_random', 
+        `${table_name}_id`, 
+        `${table_name}_id_random`,
+        `event_${table_name}_id`,
+        `event_${table_name}_id_random`
+    ];
 
     for (const key of potential_keys) {
         if (obj[key]) {
@@ -27,10 +34,12 @@ function find_object_id(
         }
     }
 
-    console.error(
-        `Object is missing a valid ID for table "${table_name}". It will be skipped.`,
-        obj
-    );
+    if (log_lvl) {
+        console.error(
+            `Object is missing a valid ID for table "${table_name}". It will be skipped. Checked keys: ${potential_keys.join(', ')}`,
+            obj
+        );
+    }
     return undefined;
 }
 

src/lib/ae_events/ae_events__event.ts

@@ -20,6 +20,7 @@ export async function load_ae_obj_id__event({
     event_id,
     view = 'default',
     inc_device_li = false,
+    inc_file_li = false,
     inc_location_li = false,
     inc_session_li = false,
     inc_template_li = false,
@@ -30,6 +31,7 @@ export async function load_ae_obj_id__event({
     event_id: string;
     view?: string;
     inc_device_li?: boolean;
+    inc_file_li?: boolean;
     inc_location_li?: boolean;
     inc_session_li?: boolean;
     inc_template_li?: boolean;
@@ -45,7 +47,7 @@ export async function load_ae_obj_id__event({
         if (log_lvl) console.log('Browser is offline. Skipping API and attempting cache load.');
         ae_promises.load__event_obj = await db_events.event.get(event_id);
         if (ae_promises.load__event_obj) {
-            return await _handle_nested_loads(ae_promises.load__event_obj, { api_cfg, inc_device_li, inc_location_li, inc_session_li, inc_template_li, log_lvl });
+            return await _handle_nested_loads(ae_promises.load__event_obj, { api_cfg, inc_device_li, inc_file_li, inc_location_li, inc_session_li, inc_template_li, log_lvl });
         }
         return null;
     }
@@ -97,13 +99,13 @@ export async function load_ae_obj_id__event({
         return null;
     }
 
-    return await _handle_nested_loads(ae_promises.load__event_obj, { api_cfg, inc_device_li, inc_location_li, inc_session_li, inc_template_li, log_lvl });
+    return await _handle_nested_loads(ae_promises.load__event_obj, { api_cfg, inc_device_li, inc_file_li, inc_location_li, inc_session_li, inc_template_li, log_lvl });
 }
 
 /**
  * Shared logic for loading nested child collections
  */
-async function _handle_nested_loads(event_obj: any, { api_cfg, inc_device_li, inc_location_li, inc_session_li, inc_template_li, log_lvl }: any) {
+async function _handle_nested_loads(event_obj: any, { api_cfg, inc_device_li, inc_file_li, inc_location_li, inc_session_li, inc_template_li, log_lvl }: any) {
     const current_event_id = event_obj.event_id_random || event_obj.event_id || event_obj.id;
 
     if (inc_device_li) {
@@ -114,6 +116,16 @@ async function _handle_nested_loads(event_obj: any, { api_cfg, inc_device_li, in
             log_lvl
         });
     }
+    if (inc_file_li) {
+        event_obj.event_file_li = await load_ae_obj_li__event_file({
+            api_cfg,
+            for_obj_type: 'event',
+            for_obj_id: current_event_id,
+            enabled: 'all',
+            limit: 100,
+            log_lvl
+        });
+    }
     if (inc_location_li) {
         event_obj.event_location_obj_li = await load_ae_obj_li__event_location({
             api_cfg,

src/lib/ae_events/ae_events__event_location.ts

@@ -5,6 +5,7 @@ import { db_save_ae_obj_li__ae_obj } from '$lib/ae_core/core__idb_dexie';
 import { db_events } from '$lib/ae_events/db_events';
 import type { ae_EventLocation } from '$lib/types/ae_types';
 import { load_ae_obj_li__event_file } from '$lib/ae_events/ae_events__event_file';
+import { load_ae_obj_li__event_session } from '$lib/ae_events/ae_events__event_session';
 
 const ae_promises: key_val = {};
 

src/lib/app_components/e_app_codemirror_v5.svelte

@@ -43,7 +43,7 @@
         class: classes = ''
     }: Props = $props();
 
-    let editor_element: HTMLDivElement = $state();
+    let editor_element: HTMLDivElement | undefined = $state();
     // let editorView: any = $state(); // Removed redundant declaration
     let cm_modules: any = $state(); // To hold the dynamically loaded CodeMirror modules
     let editor_extensions: any[] = $state([]);

src/lib/elements/element_codemirror_editor.svelte

@@ -10,7 +10,7 @@
 
     let { content = $bindable(''), placeholder = 'Start typing...' }: Props = $props();
 
-    let editor_container: HTMLDivElement = $state();
+    let editor_container: HTMLDivElement | undefined = $state();
     let editor_view: any;
     let cm: any; // Declare cm at the top level