refactor: decouple core-storage services from static keys and update i18n setup to use configurable storage adapters

packages/core-i18n/src/manager.ts

@@ -1,5 +1,5 @@
 import i18n from 'i18next';
-import { secureStorage, StorageKey } from '@repo/core-storage';
+import { globalStorageAdapter } from './setup';
 
 /**
  * Changes the active language, saves the preference locally, and optionally syncs with the backend.
@@ -16,7 +16,9 @@ export async function changeLanguage(
   if (prevLng === newLng) return;
 
   // 1. Update local storage & i18next optimistically
-  await secureStorage.setItem(StorageKey.LOCALE, newLng);
+  if (globalStorageAdapter) {
+    await globalStorageAdapter.setLanguage(newLng);
+  }
   await i18n.changeLanguage(newLng);
 
   // 2. Trigger optional backend sync
@@ -26,7 +28,9 @@ export async function changeLanguage(
     } catch (error) {
       console.error('[i18n] Backend sync failed, rolling back language', error);
       // Rollback on failure
-      await secureStorage.setItem(StorageKey.LOCALE, prevLng);
+      if (globalStorageAdapter) {
+        await globalStorageAdapter.setLanguage(prevLng);
+      }
       await i18n.changeLanguage(prevLng);
       throw error; // Rethrow so the caller can show an error toast
     }