Refactor i18n structure and update language files

- Removed old validation and common language files for English and Indonesian.
- Created new language files for English and Indonesian under the updated directory structure.
- Updated setup to reflect new language file paths and changed default language to English.
- Modified storage keys from 'locale' to 'language' for consistency.
- Added new language files for various modules including bookmarks, history, navigation, and system settings.
- Introduced new booking module language files for both English and Indonesian.
- Implemented a login page component with basic structure.

apps/web/src/core/lib/api-client.ts

@@ -1,5 +1,7 @@
 import { createHttpClient } from '@repo/core-api/http-client';
 import { faroAdapter } from '@repo/core-api/observability';
+import { ENV } from '../environment';
+import { AppStorageKey, secureStorage } from '../storage/local';
 
 /**
  * Enterprise HTTP client for `apps/web`.
@@ -15,17 +17,24 @@ import { faroAdapter } from '@repo/core-api/observability';
  */
 export const apiClient = createHttpClient(
   {
-    baseURL: import.meta.env.VITE_API_URL ?? 'http://localhost:8080/api/v1',
+    baseURL: ENV.API_BASE_URL,
     timeout: 15000,
     observability: faroAdapter,
   },
   {
     // ── Auth Interceptor ──────────────────────────────────────────
     onRequest: async (config) => {
+      config.headers['ex-app-name'] = ENV.APP_NAME;
+      config.headers['ex-app-version'] = ENV.APP_VERSION;
+      config.headers['ex-timezone-offset-minutes'] = new Date().getTimezoneOffset();
+      config.headers['ex-timezone-offset-hours'] = Math.floor(new Date().getTimezoneOffset() / 60);
+
+      const language = await secureStorage.getItem<string>(AppStorageKey.LANGUAGE);
+      config.headers['ex-language'] = language ?? ENV.DEFAULT_LANGUAGE;
+
       const token = localStorage.getItem('access_token');
-      if (token) {
-        config.headers.Authorization = `Bearer ${token}`;
-      }
+      if (token) config.headers.Authorization = `Bearer ${token}`;
+
       return config;
     },