fix(events): event location file load on mount + launcher pruning scope fix + remove legacy launcher btn

- Location page now calls load_ae_obj_li__event_file on mount so files
  appear immediately without requiring a manual Refresh press.
- _load_event_location_sub_data (Launcher 60s sync) now uses hidden='all'
  with default limit (100) instead of hidden='not_hidden'/limit=25, which
  was pruning valid Dexie records when Pres Mgmt and Launcher were both
  open on the same location simultaneously.
- Removed the legacy launcher button (Send icon, /event/ path) from the
  Locations list; removed unused Send icon import.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/lib/ae_events/ae_events__event_location.ts

@@ -357,7 +357,7 @@ async function _handle_nested_loads(
                 for_obj_type: 'event_location',
                 for_obj_id: current_location_id,
                 enabled: 'all',
-                limit: 25,
+                hidden: 'all',
                 log_lvl
             }).then((res) => (location_obj.event_file_li = res))
         );