Add per-route details to status, move socket to /srv/mc-proxy/

mcproxyctl status now shows individual routes per listener with
hostname, backend, mode, and re-encrypt indicator. Proto, gRPC
server, client library, and CLI all updated.

Default gRPC socket path moved from /var/run/mc-proxy.sock to
/srv/mc-proxy/mc-proxy.sock to match the service data directory
convention.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

client/mcproxy/client.go

@@ -162,6 +162,15 @@ func (c *Client) RemoveFirewallRule(ctx context.Context, ruleType FirewallRuleTy
 	return err
 }
 
+// RouteStatus contains status information for a single route.
+type RouteStatus struct {
+	Hostname          string
+	Backend           string
+	Mode              string // "l4" or "l7"
+	BackendTLS        bool
+	SendProxyProtocol bool
+}
+
 // ListenerStatus contains status information for a single listener.
 type ListenerStatus struct {
 	Addr              string
@@ -169,6 +178,7 @@ type ListenerStatus struct {
 	ActiveConnections int64
 	ProxyProtocol     bool
 	MaxConnections    int64
+	Routes            []RouteStatus
 }
 
 // Status contains the server's current status.
@@ -196,12 +206,23 @@ func (c *Client) GetStatus(ctx context.Context) (*Status, error) {
 
 	status.Listeners = make([]ListenerStatus, len(resp.Listeners))
 	for i, ls := range resp.Listeners {
+		routes := make([]RouteStatus, len(ls.Routes))
+		for j, r := range ls.Routes {
+			routes[j] = RouteStatus{
+				Hostname:          r.Hostname,
+				Backend:           r.Backend,
+				Mode:              r.Mode,
+				BackendTLS:        r.BackendTls,
+				SendProxyProtocol: r.SendProxyProtocol,
+			}
+		}
 		status.Listeners[i] = ListenerStatus{
 			Addr:              ls.Addr,
 			RouteCount:        int(ls.RouteCount),
 			ActiveConnections: ls.ActiveConnections,
 			ProxyProtocol:     ls.ProxyProtocol,
 			MaxConnections:    ls.MaxConnections,
+			Routes:            routes,
 		}
 	}