Revert "Refactor server.js to improve export structure"

This reverts commit 15ed587.

Author: allocsys

server.js

@@ -158,6 +158,17 @@ const syntaxErrorTestMarker = ;
 // integration test's InMemoryTransport) never binds a real port. Tests set
 // NODE_ENV=test before importing server.js.
 if (process.env.NODE_ENV !== "test" && !process.env.VERCEL) {
+   app.listen(PORT, () => {
+     console.log(`madmcp-server v2.1.0 listening on port ${PORT}`);
+     ...
+   });
+ }
+
+ // Default export so Vercel's Node runtime can invoke this as a serverless
+ // function handler (Express apps are callable as (req, res) => {}). Named
+ // exports are kept for tests/other tooling that import { app, mcpServer }.
+ export default app;
+ export { app, mcpServer };
   app.listen(PORT, () => {
     console.log(`madmcp-server v2.1.0 listening on port ${PORT}`);
     if (!GITHUB_TOKEN)   console.warn("WARNING: GITHUB_TOKEN is not set.");
@@ -172,8 +183,4 @@ if (process.env.NODE_ENV !== "test" && !process.env.VERCEL) {
   });
 }
 
-// Default export so Vercel's Node runtime can invoke this as a serverless
-// function handler (Express apps are callable as (req, res) => {}). Named
-// exports are kept for tests/other tooling that import { app, mcpServer }.
-export default app;
 export { app, mcpServer };