Fix: Synchronize SvelteKit relay and enhance native command testing

- Updated electron_relay.ts with full Phase 3 command set (run_cmd_sync, kill_processes, get_device_info).
- Fixed 500 error in Event Location by standardizing enabled/hidden flags.
- Hardened native environment detection in root layout.
- Added Manual OS Command input to Launcher Configuration for Phase 3 testing.

src/lib/ae_events/ae_events__event_location.ts

@@ -188,8 +188,8 @@ async function _handle_nested_loads(location_obj: any, { api_cfg, inc_file_li, i
             inc_all_file_li: inc_all_file_li,
             inc_presentation_li: true,
             inc_presenter_li: true,
-            enabled: 'all',
-            hidden: 'all',
+            enabled: 'enabled',
+            hidden: 'not_hidden',
             limit: 150,
             log_lvl
         });