Add terraform plugin files to match marketplace.json entry

external_plugins/terraform/.claude-plugin/plugin.json

@@ -0,0 +1,7 @@
+{
+  "name": "terraform",
+  "description": "The Terraform MCP Server provides seamless integration with Terraform ecosystem, enabling advanced automation and interaction capabilities for Infrastructure as Code (IaC) development.",
+  "author": {
+    "name": "HashiCorp"
+  }
+}

external_plugins/terraform/.mcp.json

@@ -0,0 +1,12 @@
+{
+  "terraform": {
+    "command": "docker",
+    "args": [
+      "run",
+      "-i",
+      "--rm",
+      "-e", "TFE_TOKEN=${TFE_TOKEN}",
+      "hashicorp/terraform-mcp-server:0.4.0"
+    ]
+  }
+}