mDNS Discovery:
- Implement zeroconf mDNS service registration (_secubox._udp)
- Implement peer discovery via mDNS browsing
- TXT records contain DID, role, version
- Auto-discovery of other SecuBox nodes on LAN
Topology Visualization:
- Add 7 mock nodes for demo (2 relays, 4 edges, 1 air-gapped)
- Generate edges connecting edge nodes to relays
- Force-directed layout with role-based positioning
- Node coordinates calculated based on role
C3BOX Dashboard:
- Add shared sidebar navigation (consistent with other modules)
- Responsive layout with main-content wrapper
- Air-gapped node role styling
Control Server:
- Enhanced topology endpoint with node IPs and calculated positions
- Edge generation logic for relay-link and edge-link types
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
