Add server/app.py entry point for OpenEnv validation

server/__init__.py

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+# server/__init__.py
+# Initializing the server package for OpenEnv validation.

server/app.py

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+"""
+Server Entry Point for AgentDebuggerEnv
+========================================
+This file satisfies the OpenEnv validator requirement for 'server/app.py'.
+It imports the FastAPI app from 'env.server' and provides a main() function.
+"""
+
+import uvicorn
+from env.server import app
+
+def main():
+    """Main function called by the 'server' script defined in pyproject.toml."""
+    # Runs the server on port 8000 as required by the hackathon spec
+    uvicorn.run(app, host="0.0.0.0", port=8000, workers=1)
+
+if __name__ == "__main__":
+    main()