feat: rewrite AuthService to use ROLAC auth API with in-memory token storage

- Replace GET /api/Token/Create (Basic Auth) with POST /api/Auth/login
- Add refresh() method using HttpOnly cookie (POST /api/Auth/refresh)
- Add initializeFromRefreshToken() for APP_INITIALIZER support
- logout() now fires POST /api/Auth/logout (fire-and-forget)
- Rename User interface to UserInfo (matches C# DTO: id, email, roles, languagePreference)
- All auth state is in-memory only (no localStorage)
- Fix downstream consumers: app.ts, header components, mfa-dialog, token-verification
- Fix tsconfig.spec.json: exclude legacy src/components and src/directives
- Add stub enums.model.ts and fix models/index.ts for pre-existing build errors

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

APP/src/app/portals/user-portal/user-portal.component.ts

@@ -2,7 +2,7 @@ import { Component, OnInit, OnDestroy, HostListener } from '@angular/core';
 import { CommonModule } from '@angular/common';
 import { Router, NavigationEnd, RouterModule, RouterLink, RouterLinkActive } from '@angular/router';
 import { RouterOutlet } from '@angular/router';
-import { AuthService, User } from '../../shared/services/auth.service';
+import { AuthService, UserInfo } from '../../shared/services/auth.service';
 import { Subject, takeUntil, filter } from 'rxjs';
 
 @Component({
@@ -21,7 +21,7 @@ import { Subject, takeUntil, filter } from 'rxjs';
 export class UserPortalComponent implements OnInit, OnDestroy {
   sidebarCollapsed = false;
   isMobile = false;
-  currentUser: User | null = null;
+  currentUser: UserInfo | null = null;
   currentPageTitle = 'Dashboard';
   unreadMessages = 3;
   unreadNotifications = 2;
@@ -130,10 +130,6 @@ export class UserPortalComponent implements OnInit, OnDestroy {
   }
 
   getDisplayName(): string {
-    if (this.currentUser) {
-      const fullName = `${this.currentUser.firstName} ${this.currentUser.lastName}`.trim();
-      return fullName || this.currentUser.email;
-    }
-    return '';
+    return this.currentUser?.email || '';
   }
 }