updated app name + fixed missing icon in pkgbuild

crates/pdfs-gui/src/app.rs

@@ -93,11 +93,22 @@ fn main() -> glib::ExitCode {
         .init();
 
     let app = adw::Application::builder().application_id(APP_ID).build();
-    app.connect_startup(|_| load_proton_theme());
+    app.connect_startup(|_| {
+        load_proton_theme();
+        spawn_tray();
+    });
     app.connect_activate(build_window);
     app.run()
 }
 
+/// Spawn the tray icon process in the background.
+fn spawn_tray() {
+    match Command::new("pdfs-tray").spawn() {
+        Ok(_) => tracing::info!("spawned `pdfs-tray`"),
+        Err(e) => tracing::error!("failed to spawn `pdfs-tray`: {e}"),
+    }
+}
+
 /// Install a CSS provider that overrides libadwaita's accent colour with Proton
 /// purple, app-wide. Named-colour overrides recolour the stock widgets (switch,
 /// buttons, progress fill) without per-widget styling.

crates/pdfs-gui/src/main.rs

@@ -180,6 +180,17 @@ fn main() -> Result<()> {
         .init();
 
     let dirs = AppDirs::new().context("resolve app dirs")?;
+
+    // Ensure only one instance of the tray runs.
+    let tray_sock = dirs.tray_socket();
+    if std::os::unix::net::UnixStream::connect(&tray_sock).is_ok() {
+        tracing::info!("Another instance of pdfs-tray is already running; exiting.");
+        return Ok(());
+    }
+    let _ = std::fs::remove_file(&tray_sock);
+    let _lock_socket = std::os::unix::net::UnixListener::bind(&tray_sock)
+        .context("failed to bind tray single-instance socket")?;
+
     let socket = dirs.control_socket();
     let default_mountpoint = dirs.default_mountpoint();