Add server subnet discovery store, API, and agent policy push.

server/internal/recon/relay_scan.go

@@ -16,11 +16,6 @@ type RelayScanRequest struct {
 	UDPGuess bool   `json:"udp_guess,omitempty"`
 }
 
-type UDPHint struct {
-	Port    int    `json:"port"`
-	Open    bool   `json:"open"`
-	Service string `json:"service"`
-}
 
 type RelayScanReport struct {
 	Host            string                 `json:"host"`
@@ -97,7 +92,7 @@ func LocalRelayScan(req RelayScanRequest) (*RelayScanReport, error) {
 	return &RelayScanReport{
 		Host: host, ScannedAt: time.Now().UTC(), LocalReachable: true, ScannedVia: "server",
 		Ports: ports, UDPHints: udp, PathTracerHints: PathTracerHintsFromUDP(udp),
-		Recommendations: BuildRecommendations(ports, nil, nil, host, false),
+		Recommendations: BuildRecommendations(ports, nil, nil, shell.Host, false),
 	}, nil
 }