add order history download script

scripts/python/download_order_history.py

@@ -0,0 +1,25 @@
+#!/usr/bin/env python3
+
+"""
+Download and save your complete order history from the Polymarket API.
+
+Requires API credentials set in environment.
+"""
+
+import json
+import os
+from pathlib import Path
+from agents.polymarket.polymarket import Polymarket  # type: ignore
+
+OUTPUT_FILE = Path("data/order_history_download.json")
+
+def main() -> None:
+    client = Polymarket()
+    orders = client.get_all_orders()  # type: ignore
+    OUTPUT_FILE.parent.mkdir(parents=True, exist_ok=True)
+    with open(OUTPUT_FILE, "w") as f:
+        json.dump([o.as_dict() for o in orders], f, indent=2)  # type: ignore
+    print(f"Downloaded {len(orders)} orders to {OUTPUT_FILE}")
+
+if __name__ == "__main__":
+    main()