feat: UI refactor — Dashboard + Services, 9 items → 6

Major restructure of Wild Central's web UI:

New pages:
- Dashboard: infrastructure health (Cloudflare token, DDNS sync,
  daemon status, gateway router guidance, cert warnings)
- Services: every registered service with expandable rows showing
  DNS, proxy, TLS, DDNS status. Custom TCP routes section.
  Advanced HAProxy management collapsed at bottom.

Sidebar restructured into two groups:
- Services: Dashboard, Services
- Central: Firewall, VPN, CrowdSec, DHCP

Deleted 7 pages + 7 components (2501 lines removed):
- CentralPage, CloudflarePage, DdnsPage, DnsPage, LanDnsPage,
  CertificatesPage, IngressProxyPage
- CentralComponent, CloudflareComponent, DdnsComponent,
  DnsComponent, LanDnsComponent, IngressProxyComponent,
  DnsmasqSection

All hooks and API services kept unchanged — reused in new components.
Type-check and production build pass.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

web/src/components/index.ts

@@ -1,10 +1,6 @@
 export { Message } from './Message';
-export { DnsmasqSection } from './DnsmasqSection';
 export { AppSidebar } from './AppSidebar';
 export { ErrorBoundary, ErrorFallback } from './ErrorBoundary';
-export { CentralComponent } from './CentralComponent';
-export { CloudflareComponent } from './CloudflareComponent';
-export { DnsComponent } from './DnsComponent';
 export { DhcpComponent } from './DhcpComponent';
 export { DownloadButton } from './DownloadButton';
 export { CopyButton } from './CopyButton';