fix(launcher): optimize layout reactivity and implement staggered data pipeline

- Moved session observable to child component to ensure reactive header updates.\n- Implemented deferred loading for presenters and files to prevent request storms.\n- Fixed WebSocket navigation paths to use store-backed IDs.\n- Streamlined Svelte 5 component lifecycle for better performance and SWR responsiveness.

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

@@ -1,14 +1,12 @@
 <script lang="ts">
     interface Props {
         slct__event_session_id?: string | null;
-        lq__event_session_obj: any;
         type_code?: string;
         log_lvl?: number;
     }
 
     let {
         slct__event_session_id = $bindable(null),
-        lq__event_session_obj,
         type_code = $bindable(''),
         log_lvl = $bindable(1)
     }: Props = $props();
@@ -43,21 +41,10 @@
     } from '$lib/stores/ae_events_stores';
     import { events_func } from '$lib/ae_events_functions';
 
-    // let load_event_session_obj = events_func.load_ae_obj_id__event_session({
-    //     api_cfg: $ae_api,
-    //     event_session_id: slct__event_session_id,
-    //     inc_presenter_li: false,
-    //     try_cache: true,
-    //     log_lvl: 1
-    // });
-
-    // let lq__event_session_obj = liveQuery(
-    //     () => db_events.session.get(slct_event_session_id)
-    // );
-
-    // let lq__event_session_obj = liveQuery(
-    //     () => db_events.session.get(slct__event_session_id)
-    // );
+    // Event Session (Main View Trigger)
+    let lq__event_session_obj = $derived(
+        liveQuery(() => db_events.session.get(slct__event_session_id))
+    );
 
     // import Event_launcher_file_cont from './launcher_file_cont.svelte';