Add IPC notifications to sync dashboard after sync completes

src/cli/sync_dashboard.py

@@ -1038,6 +1038,11 @@ async def run_dashboard_sync(
             # Schedule next sync
             dashboard.schedule_next_sync()
 
+            # Notify all running TUI apps to refresh their data
+            from src.utils.ipc import notify_all
+
+            await notify_all({"source": "sync_dashboard_demo"})
+
         except Exception as e:
             tracker.error_task("archive", str(e))
 
@@ -1070,6 +1075,7 @@ async def run_dashboard_sync(
         )
         from src.utils.calendar_utils import save_events_to_vdir, save_events_to_file
         from src.utils.notifications import notify_new_emails
+        from src.utils.ipc import notify_all
 
         config = dashboard._sync_config
 
@@ -1372,6 +1378,9 @@ async def run_dashboard_sync(
             # Schedule next sync
             dashboard.schedule_next_sync()
 
+            # Notify all running TUI apps to refresh their data
+            await notify_all({"source": "sync_dashboard"})
+
         except Exception as e:
             # If we fail early (e.g., auth), log to the first pending task
             for task_id in [