fix(ihm_client): double fallback IndexedDB si service worker.ready échoue

src/services/database.service.ts

@@ -308,8 +308,28 @@ export class Database {
 
       // Check if the service worker is active
       if (!this.serviceWorkerRegistration) {
+        try {
           // console.warn('Service worker registration is not ready. Waiting...');
           this.serviceWorkerRegistration = await navigator.serviceWorker.ready;
+        } catch (error) {
+          // Si le service worker n'est pas disponible, fallback vers IndexedDB direct
+          console.warn('Service worker not available, falling back to direct IndexedDB');
+          try {
+            const db = await this.getDb();
+            const tx = (db as any).transaction(payload.storeName, 'readwrite');
+            const store = tx.objectStore(payload.storeName);
+            if (payload.key) {
+              await store.put(payload.object, payload.key);
+            } else {
+              await store.put(payload.object);
+            }
+            resolve();
+            return;
+          } catch (dbError: any) {
+            reject(new Error(dbError?.message || 'IndexedDB write failed'));
+            return;
+          }
+        }
       }
 
       const activeWorker = await this.waitForServiceWorkerActivation(this.serviceWorkerRegistration);