Show user full name in navbar and homepage after login

- AuthService: added cacheUser/getCachedUser methods
- AuthService.getUser() prefers cached name over JWT claims
- Login page: fetches full profile from API after login and caches it
- Fixes navbar dropdown and homepage showing email instead of name

app/services/AuthService.js

@@ -21,6 +21,7 @@
  */
 
 const TOKEN_KEY = 'auth_token';
+const USER_KEY = 'cached_user';
 
 const AuthService = Object.freeze({
   addToken(token) {
@@ -34,6 +35,28 @@ const AuthService = Object.freeze({
 
   deleteToken() {
     localStorage.removeItem(TOKEN_KEY);
+    localStorage.removeItem(USER_KEY);
+  },
+
+  /**
+   * Cache full user profile (from API)
+   * @param {object} user — { name, email, phone, ... }
+   */
+  cacheUser(user) {
+    if (!user) return;
+    localStorage.setItem(USER_KEY, JSON.stringify(user));
+  },
+
+  /**
+   * Get cached user profile
+   * @returns {object|null}
+   */
+  getCachedUser() {
+    try {
+      return JSON.parse(localStorage.getItem(USER_KEY));
+    } catch {
+      return null;
+    }
   },
 
   /**
@@ -59,11 +82,13 @@ const AuthService = Object.freeze({
     const payload = this.decodeToken();
     if (!payload) return null;
 
+    const cached = this.getCachedUser();
+
     return {
       id: payload['http://schemas.xmlsoap.org/ws/2005/05/identity/claims/nameidentifier'] || payload.sub || null,
-      name: payload['http://schemas.xmlsoap.org/ws/2005/05/identity/claims/name'] || null,
-      email: payload['http://schemas.xmlsoap.org/ws/2005/05/identity/claims/emailaddress'] || null,
-      phone: payload['http://schemas.xmlsoap.org/ws/2005/05/identity/claims/mobilephone'] || null,
+      name: cached?.name || payload['http://schemas.xmlsoap.org/ws/2005/05/identity/claims/name'] || null,
+      email: cached?.email || payload['http://schemas.xmlsoap.org/ws/2005/05/identity/claims/emailaddress'] || null,
+      phone: cached?.phone || payload['http://schemas.xmlsoap.org/ws/2005/05/identity/claims/mobilephone'] || null,
       roles: this.getRoles(),
     };
   },