feat: implement automatic ring positioning

- Remove manual --position parameter from CLI
- Add automatic optimal position calculation based on gap analysis
- Implement dynamic ring topology management
- Add position tracking and synchronization across nodes
- Add topology command for visual ring structure inspection
- Clean up unused variables and dead code
- Simplify node setup with automatic positioning

config/ice-servers-with-turn.json

@@ -1,15 +0,0 @@
-{
-  "iceServers": [
-    {
-      "urls": "stun:stun.l.google.com:19302"
-    },
-    {
-      "urls": "stun:stun1.l.google.com:19302"
-    },
-    {
-      "urls": "turn:turnserver.example.com:3478",
-      "username": "your_username",
-      "credential": "your_password"
-    }
-  ]
-}