fix: server entry point to main and add main function

pyproject.toml

@@ -20,7 +20,7 @@ dependencies = [
 ]
 
 [project.scripts]
-server = "server.app:app"
+server = "server.app:main"
 validate = "openenv_core:validate"
 
 [project.urls]

server/app.py

@@ -231,3 +231,11 @@ async def get_leaderboard():
 async def list_agents():
     """Return available agent names."""
     return {"agents": list(AGENTS.keys())}
+
+def main():
+    """Launch the server for OpenEnv compatibility."""
+    import uvicorn
+    uvicorn.run(app, host="0.0.0.0", port=7860)
+
+if __name__ == "__main__":
+    main()