Integrate local database management and IPC handlers into Electron

- Add comprehensive IPC handlers for database operations like books, chapters, characters, and conversations.
- Implement local database initialization and user data encryption.
- Update preload script paths for consistent environment handling.
- Modify `page.tsx` to initialize local database within Electron environment.
- Add new dependencies including `node-sqlite3-wasm` and `electron-rebuild`.

app/page.tsx

@@ -31,6 +31,8 @@ import enMessages from '@/lib/locales/en.json';
 import {NextIntlClientProvider, useTranslations} from "next-intl";
 import {LangContext} from "@/context/LangContext";
 import {AIUsageContext} from "@/context/AIUsageContext";
+import OfflineProvider from "@/context/OfflineProvider";
+import OfflineContext from "@/context/OfflineContext";
 
 const messagesMap = {
     fr: frMessages,
@@ -41,6 +43,7 @@ function ScribeContent() {
     const t = useTranslations();
     const {lang: locale} = useContext(LangContext);
     const {errorMessage} = useContext(AlertContext);
+    const {initializeDatabase} = useContext(OfflineContext);
     const editor: Editor | null = useEditor({
         extensions: [
             StarterKit,
@@ -216,6 +219,19 @@ function ScribeContent() {
                 });
                 setCurrentCredits(user.creditsBalance)
                 setAmountSpent(user.aiUsage)
+
+                // Initialiser la DB locale en Electron
+                if (window.electron && user.id) {
+                    try {
+                        const dbInitialized = await initializeDatabase(user.id);
+                        if (dbInitialized) {
+                            console.log('Database initialized successfully');
+                            // TODO: Sync initial des données du serveur vers la DB locale
+                        }
+                    } catch (error) {
+                        console.error('Failed to initialize database:', error);
+                    }
+                }
             } catch (e: unknown) {
                 if (e instanceof Error) {
                     errorMessage(e.message);
@@ -359,9 +375,11 @@ export default function Scribe() {
     return (
         <LangContext.Provider value={{lang: locale, setLang: setLocale}}>
             <NextIntlClientProvider locale={locale} messages={messages}>
-                <AlertProvider>
-                    <ScribeContent/>
-                </AlertProvider>
+                <OfflineProvider>
+                    <AlertProvider>
+                        <ScribeContent/>
+                    </AlertProvider>
+                </OfflineProvider>
             </NextIntlClientProvider>
         </LangContext.Provider>
     );