Make [router]:enable-peer-stats only valid for client

llarp/config/config.cpp

@@ -130,12 +130,20 @@ namespace llarp
     conf.defineOption<std::string>(
         "router", "transport-privkey", false, "", AssignmentAcceptor(m_transportKeyFile));
 
-    conf.defineOption<bool>(
-        "router",
-        "enable-peer-stats",
-        false,
-        DefaultEnablePeerStats,
-        AssignmentAcceptor(m_enablePeerStats));
+    if (not params.isRelay)
+    {
+      // TODO: remove this -- all service nodes should run peer db
+      conf.defineOption<bool>(
+          "router",
+          "enable-peer-stats",
+          false,
+          DefaultEnablePeerStats,
+          AssignmentAcceptor(m_enablePeerStats));
+    }
+    else
+    {
+      m_enablePeerStats = true;
+    }
   }
 
   void

llarp/router/router.cpp

@@ -592,6 +592,10 @@ namespace llarp
       m_peerDb = std::make_shared<PeerDb>();
       m_peerDb->configure(conf->router);
     }
+    else
+    {
+      assert(not IsServiceNode());  // enable peer stats must be enabled for service nodes
+    }
 
     // Logging config
     LogContext::Instance().Initialize(