fix: remove incorrect ES module check preventing server startup

The conditional check for import.meta.url was preventing main() from being called,
causing connection closed errors in MCP clients. MCP servers should always start
when the module loads.

Author: jonmatum

src/git-metrics.ts

@@ -273,9 +273,7 @@ async function main() {
   });
 }
 
-if (import.meta.url === `file://${process.argv[1]}`) {
-  main().catch((error) => {
-    log('ERROR', 'Server startup failed', { error: error.message });
-    process.exit(1);
-  });
-}
+main().catch((error) => {
+  log('ERROR', 'Server startup failed', { error: error.message });
+  process.exit(1);
+});