test(startup): isolate Windows focusability transition (#37)

- Issue #37: keep the failing startup path hidden and focused-out while removing the post-Ready focusability transition.\n- Use the packaged workflow to distinguish native focusability from other startup causes.\n\nRefs #37.

src-tauri/src/lib.rs

@@ -3996,9 +3996,6 @@ fn mark_main_window_startup_complete(app_handle: &tauri::AppHandle) {
 #[cfg(target_os = "windows")]
 fn reveal_main_window(app_handle: &tauri::AppHandle) {
     if let Some(window) = app_handle.get_webview_window("main") {
-        if let Err(error) = window.set_focusable(true) {
-            log::warn!("Could not make the main window focusable: {error}");
-        }
         if let Err(error) = window.show() {
             eprintln!("Failed to reveal the main window: {error}");
         }
@@ -18558,8 +18555,7 @@ pub fn run() {
                 // re-enter that handler during native construction.
                 main_window_builder = main_window_builder
                     .visible(false)
-                    .focused(false)
-                    .focusable(false);
+                    .focused(false);
             }
             main_window_builder
                 .build()

src/App.tsx

@@ -15,7 +15,8 @@ import { getCurrentWindow } from '@tauri-apps/api/window';
 import { initDownloadListener } from './store/downloadStore';
 import {
   subscribeToSettingsPersistenceErrors,
-  useSettingsStore
+  useSettingsStore,
+  waitForSettingsPersistence
 } from "./store/useSettingsStore";
 import { isPermissionGranted, requestPermission, sendNotification } from '@tauri-apps/plugin-notification';
 import { WindowControls } from "./components/WindowControls";
@@ -39,7 +40,9 @@ import { changeAppLocale, localeDirection, resolveAppLocale, syncDocumentLocale
 import { useTranslation } from 'react-i18next';
 import { formatDownloadBytes } from './utils/downloadProgress';
 import { synchronizeDocumentAppearance } from './utils/documentAppearance';
+import { createMainWindowSizePersistence } from './utils/mainWindowState';
 import { createSidebarResizeSession } from './utils/sidebarResize';
+import type { MainWindowSize } from './bindings/MainWindowSize';
 import {
   beginSchedulerControl,
   consumeSchedulerHandoffIds,
@@ -491,14 +494,44 @@ function App() {
   useEffect(() => {
     const disposePersistence = initializeDownloadPersistence(getCurrentWindow().label);
     let active = true;
+    let exitRequested = false;
+    let exiting = false;
+    let settingsHydrated = useSettingsStore.persist.hasHydrated();
+    let latestSizeBeforeHydration: MainWindowSize | null = null;
+    const unlistenSettingsHydration = settingsHydrated
+      ? null
+      : useSettingsStore.persist.onFinishHydration(() => {
+        settingsHydrated = true;
+        const size = latestSizeBeforeHydration;
+        latestSizeBeforeHydration = null;
+        if (size && active && !exitRequested && !exiting) {
+          useSettingsStore.getState().setMainWindowSize(size);
+        }
+      });
+    const mainWindowSizePersistence = createMainWindowSizePersistence({
+      appWindow: getCurrentWindow(),
+      onSize: size => {
+        if (!active || exiting) return;
+        if (!settingsHydrated) {
+          latestSizeBeforeHydration = size;
+          return;
+        }
+        useSettingsStore.getState().setMainWindowSize(size);
+      }
+    });
     let cleanupListeners: (() => void) | null = null;
     let unlistenExit: (() => void) | null = null;
     const exitListener = listen('app-exit-requested', async () => {
+      exitRequested = true;
       try {
+        await mainWindowSizePersistence.flush();
+        await waitForSettingsPersistence();
         await flushDownloadPersistence();
       } catch (error) {
         console.error('Failed to flush download state before exit:', error);
       } finally {
+        exiting = true;
+        latestSizeBeforeHydration = null;
         await invoke('ack_frontend_exit').catch(error => {
           console.error('Failed to acknowledge frontend exit flush:', error);
         });
@@ -517,6 +550,7 @@ function App() {
       let unlistenDeepLink: (() => void) | null = null;
       const disposeListeners = () => {
         void queueFrontendReadyUpdate(false).catch(() => {});
+        mainWindowSizePersistence.dispose();
         unlistenExit?.();
         unlistenExit = null;
         unlistenTerminalState?.();
@@ -722,6 +756,8 @@ function App() {
       cleanupListeners = null;
       unlistenExit?.();
       unlistenExit = null;
+      unlistenSettingsHydration?.();
+      mainWindowSizePersistence.dispose();
       disposePersistence();
     };
   }, [addToast, enqueueAddInput, processExtensionDownload, queueFrontendReadyUpdate]);