Migrated forgejo service and configuration to trantor. Added nginx reverse
proxy support on trantor with ACME configuration for SSL certificates.
Fixed vaultwarden domain in shared services from vault.baduhai.dev to
pass.baduhai.dev to match actual nginx configuration.
Alexandria's unbound now only serves LAN clients (192.168.0.0/16) and
returns LAN IPs for service domains.
Created new unbound instance on trantor to serve Tailscale clients
(100.64.0.0/10) and return tailscale IPs for service domains.
Both configurations pull service records from shared/services.nix.
Removed the split-dns.nix module and all service-specific splitDNS.entries
configurations. Service DNS records are now sourced from the centralized
shared/services.nix file instead of being declared individually in each
service configuration.
Created centralized service definitions in shared/services.nix to store
service metadata (domains, IPs, ports) that need to be accessible across
multiple hosts. This replaces the per-service split DNS module approach
with a single source of truth.
Services are now exported through utils.nix for easy access in host configs.
