Add helius to marketplace

.claude-plugin/marketplace.json

@@ -1040,14 +1040,16 @@
       "homepage": "https://github.com/intercom/claude-plugin-external"
     },
     {
-      "name": "cockroachdb",
-      "description": "CockroachDB plugin for Claude Code — explore schemas, write optimized SQL, debug queries, and manage distributed database clusters directly from your AI coding agent.",
+      "name": "helius",
+      "description": "Build on Solana with Helius — live blockchain tools, expert coding patterns, and autonomous account signup",
       "source": {
-        "source": "url",
-        "url": "https://github.com/cockroachdb/claude-plugin.git",
-        "sha": "a54566e03c852567589ef85bb449d1e4de229667"
+        "source": "git-subdir",
+        "url": "helius-labs/core-ai",
+        "path": "helius-plugin",
+        "ref": "main",
+        "sha": "05ea4d1128d46618266bbcc23a5e7019c57be0d6"
       },
-      "homepage": "https://github.com/cockroachdb/claude-plugin"
+      "homepage": "https://www.helius.dev/docs"
     }
   ]
 }