Add railway to marketplace

.claude-plugin/marketplace.json

@@ -686,15 +686,17 @@
       "homepage": "https://github.com/semgrep/mcp-marketplace.git"
     },
     {
-      "name": "data",
+      "name": "railway",
-      "description": "Data engineering for Apache Airflow and Astronomer. Author DAGs with best practices, debug pipeline failures, trace data lineage, profile tables, migrate Airflow 2 to 3, and manage local and cloud deployments.",
+      "description": "Deploy and manage apps, databases, and infrastructure on Railway. Covers project setup, deploys, environment configuration, networking, troubleshooting, and monitoring.",
-      "category": "development",
+      "category": "deployment",
       "source": {
-        "source": "url",
+        "source": "git-subdir",
-        "url": "https://github.com/astronomer/agents.git",
+        "url": "railwayapp/railway-skills",
-        "sha": "7ef022b02f5296b5ecc52ba0db3ba9345ec03c9e"
+        "path": "plugins/railway",
+        "ref": "main",
+        "sha": "d52f3741a6a33a3191d6138eb3d6c3355cb970d1"
       },
-      "homepage": "https://github.com/astronomer/agents"
+      "homepage": "https://docs.railway.com/ai/claude-code-plugin"
     }
   ]
 }