refactor: move app.py to server/app.py per OpenEnv validator requirement

Dockerfile

@@ -30,4 +30,4 @@ EXPOSE 7860
 HEALTHCHECK --interval=30s --timeout=10s CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:7860/health')"
 
 # Start the FastAPI+Gradio server (OpenEnv validator calls /reset /step /state)
-CMD ["python", "app.py"]
+CMD ["python", "server/app.py"]

pyproject.toml

@@ -31,7 +31,7 @@ dependencies = [
 [project.scripts]
 teamforge-demo      = "demo:run_demo"
 teamforge-benchmark = "benchmark:main"
-server              = "app:serve"
+server              = "server.app:main"
 
 [project.urls]
 Homepage      = "https://github.com/yourname/teamforge"

app.py → server/app.py

@@ -21,6 +21,7 @@ from fastapi.responses import JSONResponse
 from pydantic import BaseModel
 import gradio as gr
 
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 from environment import TeamForgeEnv
 from models import (
     Commit, EditFile, GenerateReview,
@@ -235,9 +236,9 @@ from gradio.routes import mount_gradio_app
 app = mount_gradio_app(api, demo, path="/ui")
 
 # ── Entry point ───────────────────────────────────────────────────────────────
-def serve():
+def main():
     port = int(os.getenv("PORT", 7860))
     uvicorn.run(app, host="0.0.0.0", port=port)
 
 if __name__ == "__main__":
-    serve()
+    main()