fix: correct Ref MCP configuration

- Change service name from 'ref' to 'Ref'
- Change type from 'remote' to 'http'
- Move API key from Authorization header to URL parameter
- Maintain security by using environment variable

opencode.json

@@ -23,12 +23,10 @@
     }
   },
   "mcp": {
-    "ref": {
-      "type": "remote",
-      "url": "https://api.ref.tools/mcp",
-      "headers": {
-        "Authorization": "Bearer {env:REF_API_KEY}"
-      }
+    "Ref": {
+      "type": "http",
+      "url": "https://api.ref.tools/mcp?apiKey={env:REF_API_KEY}",
+      "headers": {}
     },
     "figma": {
       "type": "local",