id: BT-002
title: Historical Daily Options Snapshot Provider
status: backlog
priority: P2
effort: L
depends_on:
  - BT-001
tags: [backtesting, data]
summary: Support real daily historical options premiums in backtests.
acceptance_criteria:
  - Historical provider abstraction supports point-in-time daily option snapshots.
  - Backtests can swap synthetic pricing for observed historical premiums.
  - Contract selection avoids lookahead bias.
  - Provider/data-quality tradeoffs are documented.