fix: ensure authenticated graceful shutdown exits process and sort live activity feed by timestamp descending

server/src/lib.rs

@@ -392,7 +392,9 @@ pub async fn run_server(state: Arc<MemoryState>) -> Result<(), Box<dyn std::erro
             .join(".gemini/mcp_memory/daemon_error.log");
         let _ = tokio::fs::write(&log_path, format!("Server crashed: {}\n", e)).await;
     }
-    Ok(())
+
+    tracing::info!("axum::serve graceful shutdown complete. Terminating process cleanly.");
+    std::process::exit(0);
 }
 
 pub fn init_logging(app_name: &str) -> Option<tracing_appender::non_blocking::WorkerGuard> {