Add sourcegraph to marketplace

.claude-plugin/marketplace.json

@@ -686,17 +686,15 @@
       "homepage": "https://github.com/semgrep/mcp-marketplace.git"
     },
     {
-      "name": "railway",
-      "description": "Deploy and manage apps, databases, and infrastructure on Railway. Covers project setup, deploys, environment configuration, networking, troubleshooting, and monitoring.",
-      "category": "deployment",
+      "name": "sourcegraph",
+      "description": "Code search and understanding across codebases. Search, read, and trace references across repositories; analyze refactor impact; investigate incidents via commit and diff search; run targeted security sweeps.",
+      "category": "development",
       "source": {
-        "source": "git-subdir",
-        "url": "railwayapp/railway-skills",
-        "path": "plugins/railway",
-        "ref": "main",
-        "sha": "d52f3741a6a33a3191d6138eb3d6c3355cb970d1"
+        "source": "url",
+        "url": "https://github.com/sourcegraph-community/sourcegraph-claudecode-plugin.git",
+        "sha": "cfe3d44476957b16d1575261bef6b2dc7cb1e0b7"
       },
-      "homepage": "https://docs.railway.com/ai/claude-code-plugin"
+      "homepage": "https://sourcegraph.com"
     }
   ]
 }