- Fix deprecated datetime.utcfromtimestamp() in shared_utilities.py
- Create BacktestResult schema with locked structure
- Add TradeResult and BacktestMetrics dataclasses
- Implement determinism hash for verifying reproducible results
- Add comprehensive tests for result schema and determinism
The BacktestResult schema ensures consistent output format and
provides methods to verify that same inputs produce same results.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
