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

@@ -19007,6 +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();

src/main.tsx

@@ -78,11 +78,12 @@ const PropertiesStartupFailure = () => (
 const renderMainApp = async () => {
   if (!rootElement) return;
 
-  // Diagnostic control for Issue #37: keep the native shell and extension
-  // server alive without loading the application renderer or its startup
-  // effects. This branch is used only to separate renderer startup from the
-  // native delayed-crash path.
-  renderRoot(() => <div data-firelink-startup-control="renderer" />);
+  // Keep the child entrypoint isolated from the main application module. App
+  // imports the persistent Zustand stores, whose module initialization issues
+  // main-window-only IPC commands. Loading it in a Properties child creates a
+  // second persistence owner and can race the bridge handshake.
+  const RootComponent = (await import('./App')).default;
+  renderRoot(RootComponent);
 };
 
 const renderPropertiesApp = async () => {