chore(mcp): wire marketplace server

Summary:\n- added repo-level .mcp.json for the shared MCP server\n- removed inline MCP config from claude/code plugin

.mcp.json

@@ -0,0 +1,12 @@
+{
+  "mcpServers": {
+    "HOST_UK_MARKETPLACE": {
+      "command": "go",
+      "args": [
+        "run",
+        "./mcp/"
+      ],
+      "type": "stdio"
+    }
+  }
+}

claude/code/.claude-plugin/plugin.json

@@ -18,55 +18,5 @@
     "go",
     "php",
     "laravel"
-  ],
-  "mcp": {
-    "server": "go run google/mcp/main.go",
-    "tools": [
-      {
-        "name": "core_go_test",
-        "description": "Run Go tests",
-        "parameters": {
-          "type": "object",
-          "properties": {
-            "filter": {
-              "type": "string"
-            },
-            "coverage": {
-              "type": "boolean",
-              "default": false
-            }
-          }
-        }
-      },
-      {
-        "name": "core_dev_health",
-        "description": "Check monorepo status",
-        "parameters": {
-          "type": "object",
-          "properties": {}
-        }
-      },
-      {
-        "name": "core_dev_commit",
-        "description": "Commit changes across repos",
-        "parameters": {
-          "type": "object",
-          "properties": {
-            "message": {
-              "type": "string"
-            },
-            "repos": {
-              "type": "array",
-              "items": {
-                "type": "string"
-              }
-            }
-          },
-          "required": [
-            "message"
   ]
 }
-      }
-    ]
-  }
-}