ops: Enable stratum in prod config via localhost nginx proxy

production/mempool-config.mainnet.json

@@ -154,5 +154,9 @@
   "WALLETS": {
     "ENABLED": true,
     "WALLETS": ["BITB", "3350"]
+  },
+  "STRATUM": {
+    "ENABLED": true,
+    "API": "http://127.0.0.1:81"
   }
 }