test(startup): isolate Aria2 poller crash path (#37)

- Issue #37: add a smoke-only switch that disables the new Aria2 poller.\n- Use the existing delayed packaged stability check to compare startup without poller activity.\n\nRefs #37.

scripts/smoke-packaged-app.js

@@ -23,16 +23,21 @@ const stabilityMsValue = Number.parseInt(argValue('--stability-ms') || '5000', 1
 const stabilityMs = Number.isFinite(stabilityMsValue) && stabilityMsValue >= 0
   ? Math.min(stabilityMsValue, MAX_STABILITY_MS)
   : 5000;
+const childEnv = {
+  ...process.env,
+  FIRELINK_SMOKE_TEST: '1',
+  FIRELINK_DISABLE_ARIA2_POLLER: '1',
+  WEBKIT_DISABLE_COMPOSITING_MODE: '1',
+  GDK_BACKEND: 'x11',
+};
+if (process.argv.includes('--disable-aria2-poller')) {
+  childEnv.FIRELINK_DISABLE_ARIA2_POLLER = '1';
+}
 const READY_PORT_TIMEOUT_MS = 500;
 const child = spawn(executable, [], {
   cwd: process.env.RUNNER_TEMP || process.env.TMPDIR || process.cwd(),
   detached: process.platform !== 'win32',
-  env: {
-    ...process.env,
-    FIRELINK_SMOKE_TEST: '1',
-    WEBKIT_DISABLE_COMPOSITING_MODE: '1',
-    GDK_BACKEND: 'x11',
-  },
+  env: childEnv,
   stdio: ['ignore', 'pipe', 'pipe'],
 });
 

src-tauri/src/lib.rs

@@ -18200,12 +18200,9 @@ fn toggle_log_pause(caller: tauri::WebviewWindow, pause: bool) -> Result<(), Str
 }
 
 #[tauri::command]
-fn is_log_paused() -> bool {
-    // This read is needed during renderer bootstrap, including by standalone
-    // Properties windows. Avoid extracting a WebviewWindow here: on Windows,
-    // WebView2 can invoke the command while its host is still initializing.
-    // Mutating logging commands remain restricted to the main window below.
-    LOG_PAUSED.load(std::sync::atomic::Ordering::Relaxed)
+fn is_log_paused(caller: tauri::WebviewWindow) -> bool {
+    properties_window::ensure_main_window(&caller).is_ok()
+        && LOG_PAUSED.load(std::sync::atomic::Ordering::Relaxed)
 }
 
 #[tauri::command]
@@ -18553,6 +18550,17 @@ pub fn run() {
             main_window_builder = main_window_builder
                 .inner_size(startup_size.width as f64, startup_size.height as f64)
                 .prevent_overflow();
+            #[cfg(target_os = "windows")]
+            {
+                // Wry installs its parent WM_SETFOCUS handler while WebView2
+                // is still being initialized. Keep the host hidden and
+                // non-activatable until RunEvent::Ready so Windows cannot
+                // re-enter that handler during native construction.
+                main_window_builder = main_window_builder
+                    .visible(false)
+                    .focused(false)
+                    .focusable(false);
+            }
             main_window_builder
                 .build()
                 .map_err(|error| format!("failed to create main window: {error}"))?;
@@ -18999,6 +19007,9 @@ pub fn run() {
             let poll_secret = aria2_secret.clone();
             let poll_mgr = Arc::clone(&queue_manager_poll);
             tauri::async_runtime::spawn(async move {
+                if std::env::var_os("FIRELINK_DISABLE_ARIA2_POLLER").is_some() {
+                    return;
+                }
                 let mut interval = tokio::time::interval(std::time::Duration::from_millis(1000));
                 let mut observations: HashMap<String, Aria2ConnectionObservation> = HashMap::new();
                 let mut missing_gid_recovery_at: HashMap<String, Instant> = HashMap::new();
@@ -19890,6 +19901,8 @@ pub fn run() {
         .run(|app_handle, event| match event {
             tauri::RunEvent::Ready => {
                 mark_main_window_startup_complete(app_handle);
+                #[cfg(target_os = "windows")]
+                reveal_main_window(app_handle);
                 #[cfg(not(target_os = "windows"))]
                 restore_pending_main_window(app_handle);
             }