Add superseed mainnet op-reth pruned-trace profile

- Add new superseed-mainnet-op-reth-pruned-trace.yml compose file
- Update compose_registry.json with new entry
- Mirror sepolia op-reth profile structure with mainnet settings

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

compose_registry.json

@@ -8542,6 +8542,23 @@
       "soneium-minato-sepolia-op-reth-pruned-trace"
     ]
   },
+  {
+    "chain": "mainnet",
+    "client": "reth",
+    "compose_file": "op/reth/superseed-mainnet-op-reth-pruned-trace",
+    "drpc_chain": "superseed",
+    "features": [
+      "trace"
+    ],
+    "network": "superseed",
+    "node": "node",
+    "relay": null,
+    "stack": "op",
+    "type": "pruned",
+    "volumes": [
+      "superseed-mainnet-op-reth-pruned-trace"
+    ]
+  },
   {
     "chain": "sepolia",
     "client": "reth",