Add cloud-sql-postgresql plugin

.claude-plugin/marketplace.json

@@ -334,6 +334,20 @@
       "category": "productivity",
       "homepage": "https://github.com/anthropics/claude-plugins-official/tree/main/plugins/claude-md-management"
     },
+    {
+      "name": "cloud-sql-postgresql",
+      "description": "Create, connect, and interact with a Cloud SQL for PostgreSQL database and data.",
+      "author": {
+        "name": "Google LLC"
+      },
+      "category": "database",
+      "source": {
+        "source": "url",
+        "url": "https://github.com/gemini-cli-extensions/cloud-sql-postgresql.git",
+        "sha": "16862db30c310cbbc71c1c369a8d026d6974a82d"
+      },
+      "homepage": "https://cloud.google.com/sql"
+    },
     {
       "name": "cloudflare",
       "source": {