- Replace deprecated `date` parameter with `start_date`/`end_date`
- Return single-date format (detailed) when dates are equal
- Return range format (lightweight with period metrics) when dates differ
- Add period metrics: period_return_pct, annualized_return_pct, calendar_days, trading_days
- Default to last 30 days when no dates provided
- Group results by model for date range queries
- Add comprehensive test coverage for both response formats
- Implement automatic edge trimming for date ranges
- Add 404 error handling for empty result sets
- Include 422 error for deprecated `date` parameter usage
Implements new /results endpoint with day-centric data structure:
- Returns starting_position, daily_metrics, trades, and final_position
- Supports reasoning levels: none (default), summary, full
- Uses database helper methods from trading_days schema
- Replaces old positions-based endpoint
Changes:
- Created api/routes/results_v2.py with new endpoint
- Registered router in api/main.py
- Removed old /results endpoint (positions table)
- Added comprehensive integration tests
All tests pass.
