Refactor RDP proxy handling and update related tests

agents/rap-node-agent/internal/mesh/peer_recovery_plan_test.go

@@ -76,12 +76,12 @@ func TestPeerRecoveryPlanMaintainsRelayReadyPeersInSteadyMode(t *testing.T) {
 			Entries: []PeerCacheEntry{
 				{
 					NodeID:            "node-c",
-					Endpoint:          "http://relay:19001",
+					Endpoint:          "quic://relay:19443",
 					Warm:              true,
 					WarmReason:        "rendezvous_lease",
 					RendezvousLeaseID: "lease-1",
 					RelayNodeID:       "node-r",
-					RelayEndpoint:     "http://relay:19001",
+					RelayEndpoint:     "quic://relay:19443",
 					RelayControl:      true,
 				},
 			},
@@ -121,7 +121,7 @@ func TestPeerRecoveryPlanCapsTargetByConnectablePeers(t *testing.T) {
 func recoveryPlanPeer(nodeID string, warm bool, recoverySeed bool, warmReason string) PeerCacheEntry {
 	return PeerCacheEntry{
 		NodeID:       nodeID,
-		Endpoint:     "http://" + nodeID + ":19001",
+		Endpoint:     "quic://" + nodeID + ":19443",
 		Warm:         warm,
 		WarmReason:   warmReason,
 		RecoverySeed: recoverySeed,