fix(ihm_client): fallback IndexedDB direct si Service Worker indisponible (iframe)

src/services/database.service.ts

@@ -287,6 +287,25 @@ export class Database {
 
   public addObject(payload: { storeName: string; object: any; key: any }): Promise<void> {
     return new Promise(async (resolve, reject) => {
+      // Fallback: si Service Worker indisponible (ex: iframe tiers), écriture directe IndexedDB
+      if (!('serviceWorker' in navigator)) {
+        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 (error: any) {
+          reject(new Error(error?.message || 'IndexedDB write failed'));
+          return;
+        }
+      }
+
       // Check if the service worker is active
       if (!this.serviceWorkerRegistration) {
         // console.warn('Service worker registration is not ready. Waiting...');
@@ -325,6 +344,27 @@ export class Database {
 
   public batchWriting(payload: { storeName: string; objects: { key: any; object: any }[] }): Promise<void> {
     return new Promise(async (resolve, reject) => {
+      // Fallback direct IndexedDB si Service Worker indisponible
+      if (!('serviceWorker' in navigator)) {
+        try {
+          const db = await this.getDb();
+          const tx = (db as any).transaction(payload.storeName, 'readwrite');
+          const store = tx.objectStore(payload.storeName);
+          for (const { key, object } of payload.objects) {
+            if (key) {
+              await store.put(object, key);
+            } else {
+              await store.put(object);
+            }
+          }
+          resolve();
+          return;
+        } catch (error: any) {
+          reject(new Error(error?.message || 'IndexedDB batch write failed'));
+          return;
+        }
+      }
+
       if (!this.serviceWorkerRegistration) {
         this.serviceWorkerRegistration = await navigator.serviceWorker.ready;
       }