feat(agent-call): add contract-driven mock executor

deploy/backup_sqlite.py

@@ -0,0 +1,38 @@
+from __future__ import annotations
+
+import argparse
+import sqlite3
+from pathlib import Path
+
+
+def copy_database(source: str, destination: str) -> None:
+    source_path = Path(source)
+    destination_path = Path(destination)
+    if not source_path.is_file():
+        raise FileNotFoundError(source)
+    destination_path.parent.mkdir(parents=True, exist_ok=True)
+    source_db = sqlite3.connect(source_path)
+    destination_db = sqlite3.connect(destination_path)
+    try:
+        source_db.backup(destination_db)
+        destination_db.commit()
+    finally:
+        destination_db.close()
+        source_db.close()
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser(
+        description="offline SQLite backup/restore for agent-call"
+    )
+    parser.add_argument("action", choices=("backup", "restore"))
+    parser.add_argument("source")
+    parser.add_argument("destination")
+    args = parser.parse_args()
+    copy_database(args.source, args.destination)
+    print(f"{args.action} complete")
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())