new file: Makefile

new file:   TODO.md
	modified:   src/config.rs
	modified:   src/detect.rs
	modified:   src/diagnose.rs
	new file:   src/gui.rs
	modified:   src/main.rs
	modified:   src/service.rs
	modified:   src/setup.rs
	modified:   src/tray.rs
	new file:   src/util.rs
	new file:   umutray.desktop

src/util.rs

@@ -0,0 +1,16 @@
+use iced::futures::channel::oneshot;
+
+/// Run a blocking closure on a thread pool thread and await its result.
+/// Used to offload blocking work (HTTP, disk, process spawning) without
+/// stalling the iced event loop.
+pub async fn async_blocking<T, F>(f: F) -> T
+where
+    T: Send + 'static,
+    F: FnOnce() -> T + Send + 'static,
+{
+    let (tx, rx) = oneshot::channel();
+    std::thread::spawn(move || {
+        let _ = tx.send(f());
+    });
+    rx.await.expect("blocking task panicked")
+}