feat: Add telemetry, timing, and detailed logging across server, stub, and nvim-core

server/src/main.rs

@@ -263,6 +263,7 @@ fn run_server(state: Arc<MemoryState>) -> Result<(), Box<dyn std::error::Error>>
                 "/shutdown",
                 post(|| async move {
                     std::thread::spawn(|| {
+                        tracing::info!("Received shutdown request via /shutdown endpoint. Exiting process cleanly.");
                         std::thread::sleep(std::time::Duration::from_millis(100));
                         std::process::exit(0);
                     });