- iv_engine/options_vol: when get_atm_iv() returns None (yfinance chain unavailable),
fall back to most recent iv_history row so IV Rank is always computable from
bootstrapped data; live vs history source tagged as iv_source field
- Dashboard: build mtmMap from tradeMtmData.trades (trade_entry_prices, cycle auto-log)
keyed by pattern_id; getAddedInfo() falls back to mtmMap so Entrée/Durée columns
populate automatically after each AI cycle without manual portfolio add
- OptionsLab: show '~' prefix and 'IV estimée' label when IV comes from history fallback;
fix near-invisible text-slate-700 on 'Sans historique' section header
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>