feat: add mdns hostname metadata variant and fix vhost routing

- Add HostnameMetadata::Mdns variant to distinguish mDNS from private domains
- Mark mDNS addresses as private (public: false) since mDNS is local-only
- Fall back to null SNI entry when hostname not found in vhost mapping
- Simplify public detection in ProxyTarget filter
- Pass hostname to update_addresses for mDNS domain name generation

web/projects/ui/src/app/routes/portal/components/interfaces/interface.service.ts

@@ -30,6 +30,7 @@ function getGatewayIds(h: T.HostnameInfo): string[] {
     case 'ipv6':
     case 'public-domain':
       return [h.metadata.gateway]
+    case 'mdns':
     case 'private-domain':
       return h.metadata.gateways
     case 'plugin':
@@ -45,8 +46,10 @@ function getAddressType(h: T.HostnameInfo): string {
       return 'IPv6'
     case 'public-domain':
       return 'Public Domain'
+    case 'mdns':
+      return 'mDNS'
     case 'private-domain':
-      return h.host.endsWith('.local') ? 'mDNS' : 'Private Domain'
+      return 'Private Domain'
     case 'plugin':
       return 'Plugin'
   }
@@ -84,8 +87,7 @@ export class InterfaceService {
       const isDomain =
         h.metadata.kind === 'private-domain' ||
         h.metadata.kind === 'public-domain'
-      const isMdns =
-        h.metadata.kind === 'private-domain' && h.host.endsWith('.local')
+      const isMdns = h.metadata.kind === 'mdns'
 
       const address: GatewayAddress = {
         enabled,

web/projects/ui/src/app/services/api/api.fixures.ts

@@ -2137,7 +2137,7 @@ export namespace Mock {
                   host: 'adjective-noun.local',
                   port: 1234,
                   metadata: {
-                    kind: 'private-domain',
+                    kind: 'mdns',
                     gateways: ['eth0', 'wlan0'],
                   },
                 },

web/projects/ui/src/app/services/api/mock-patch.ts

@@ -49,7 +49,7 @@ export const mockPatchData: DataModel = {
                   host: 'adjective-noun.local',
                   port: 443,
                   metadata: {
-                    kind: 'private-domain',
+                    kind: 'mdns',
                     gateways: ['eth0', 'wlan0'],
                   },
                 },
@@ -515,7 +515,7 @@ export const mockPatchData: DataModel = {
                     host: 'adjective-noun.local',
                     port: 443,
                     metadata: {
-                      kind: 'private-domain',
+                      kind: 'mdns',
                       gateways: ['eth0'],
                     },
                   },
@@ -622,7 +622,7 @@ export const mockPatchData: DataModel = {
                     host: 'adjective-noun.local',
                     port: 8332,
                     metadata: {
-                      kind: 'private-domain',
+                      kind: 'mdns',
                       gateways: ['eth0'],
                     },
                   },