Add comprehensive platform administration panel

- Database: Add login_history, ai_recommendation_log tables; is_platform_owner
  column on users; subscription fields on organizations (payment_date,
  confirmation_number, renewal_date)
- Backend: New AdminAnalyticsService with platform metrics, tenant detail, and
  health score calculations (0-100 based on activity, budget, transactions,
  members, AI usage)
- Backend: Login/org-switch now records to login_history; AI recommendations
  logged to ai_recommendation_log; platform owner protected from superadmin toggle
- Frontend: 4-tab admin panel (Dashboard, Organizations, Users, Tenant Health)
  with tenant detail drawer, subscription management, health scoring visualization
- Platform owner account (admin@hoaledgeriq.com) auto-redirects to admin panel
- Seed data includes platform owner account and sample login history

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

backend/src/modules/users/entities/user.entity.ts

@@ -46,6 +46,9 @@ export class User {
   @Column({ name: 'is_superadmin', default: false })
   isSuperadmin: boolean;
 
+  @Column({ name: 'is_platform_owner', default: false })
+  isPlatformOwner: boolean;
+
   @Column({ name: 'last_login_at', type: 'timestamptz', nullable: true })
   lastLoginAt: Date;