feat: Veeam VSPC backup integration - sync, compliance, UI

- Database: 7 Veeam tables + backup_type_udf column on configuration_items
- API Client: VSPC REST API v3 client with pagination, rate limiting, Bearer auth
- Sync Service: full/incremental sync for orgs, servers, repos, jobs, agent jobs, workloads
- Scheduler: veeam-incremental (30min) and veeam-full (daily 2AM) schedules
- Compliance Engine: cross-references Autotask config items vs Veeam workloads
- API Endpoints: backup-status, companies, workloads, jobs, repos, compliance, sync
- UI: Backup Status page with Overview + Contract Compliance tabs
- Navigation: added Backup Status link with HardDrive icon
- Docker: added VEEAM_VSPC_URL and VEEAM_VSPC_API_KEY env vars to compose

components/navigation/app-navigation.tsx

@@ -12,7 +12,8 @@ import {
   Database,
   RefreshCw,
   ChevronDown,
-  Activity
+  Activity,
+  HardDrive
 } from 'lucide-react';
 import {
   NavigationMenu,
@@ -47,6 +48,12 @@ const navigationItems: NavItem[] = [
     icon: Server,
     description: 'Manage IT assets and devices'
   },
+  {
+    title: 'Backup Status',
+    href: '/backup-status',
+    icon: HardDrive,
+    description: 'Veeam backup health and compliance'
+  },
   {
     title: 'Admin',
     icon: Activity,