Port Castle's tunnel config generator to Go. Central can now manage
cloudflared ingress configuration for public service exposure.
Services with reach=public get projected at <subdomain>.<publicDomain>
with Host/SNI rewriting to the internal domain so the gateway's wildcard
cert validates and existing routing works unchanged.
- Locally-managed config.yml (not remotely-managed token tunnel)
- Public surface is exactly the set of reach=public services
- Auto-removes config when tunnel is disabled or no public services
- 7 tests covering basic generation, subdomain override, edge cases
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
