Add terms of use translations, sync detection, and refactor book components

- Introduced new translations for terms of use in French and English locales.
- Added sync status detection logic for books in `BookList` and `BookCard` components.
- Refactored `BookCard` to handle additional props and improve layout flexibility.
- Enhanced `TermsOfUse` component with complete localization support and refuse functionality.
- Updated data decryption logic in Rust services to handle optional fields and additional metadata consistently.
- Improved offline/online synchronization workflows with extended context properties.

lib/tauri.ts

@@ -679,7 +679,12 @@ export async function applySeriesTombstones(tombstones: TombstoneRecord[]): Prom
 
 // ─── Window Management ──────────────────────────────────────
 
+let loginWindowOpening = false;
+
 export async function openLoginWindow(): Promise<void> {
+    if (loginWindowOpening) return;
+    loginWindowOpening = true;
+
     const {WebviewWindow} = await import('@tauri-apps/api/webviewWindow');
     const {getCurrentWindow} = await import('@tauri-apps/api/window');
 
@@ -687,6 +692,7 @@ export async function openLoginWindow(): Promise<void> {
     if (existing) {
         await existing.setFocus();
         await getCurrentWindow().hide();
+        loginWindowOpening = false;
         return;
     }
 
@@ -701,6 +707,7 @@ export async function openLoginWindow(): Promise<void> {
     });
 
     loginWindow.once('tauri://created', async function () {
+        loginWindowOpening = false;
         await getCurrentWindow().hide();
     });
 }
@@ -712,20 +719,20 @@ export async function loginSuccess(): Promise<void> {
     const currentLabel = getCurrentWindow().label;
 
     if (currentLabel === 'login') {
-        const {emit} = await import('@tauri-apps/api/event');
-        await emit('auth-success');
         const mainWindow = await WebviewWindow.getByLabel('main');
         if (mainWindow) {
             await mainWindow.show();
             await mainWindow.setFocus();
+            await mainWindow.emit('auth-success');
         }
-        await getCurrentWindow().close();
+        getCurrentWindow().close();
     } else {
         window.location.reload();
     }
 }
 
 export async function logout(): Promise<void> {
+    await removeToken();
     await openLoginWindow();
 }