feat(backtest): add weekly/monthly rebalancing (W/M) #8
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Summary
Add weekly/monthly rebalancing options to VectorizedBacktest via
rebalance_freqparameter. This allows users to configure rebalancing frequency as "D" (daily), "W" (weekly), or "M" (monthly), addressing issue #4.Changes
_should_rebalance()method to support W/M frequenciesrun()method using proper DataFrame broadcastingTesting
pytestpasses locally (9/9 tests passing)ruff,black)Technical Details
date.weekday() == 0(Mondays)date.day == 1(1st of month)ValueErrorfor invalid frequenciesRelated Issues
Fixes #4