ojy
3ea5fd5209
Replaces the IV/HV >= 1.5 heuristic with a baseline-relative jump: a symbol is flagged SPIKE when current ATM IV is at least 30% above its recent baseline (e.g., 10% -> 13%+). Baseline prefers the 30-day average of saved snapshots; falls back to HV30 when no scan history exists. Each scan persists a snapshot so the baseline self-improves over time. BIG MOVE (|chg%| >= 3%) is now shown as a separate badge instead of a spike requirement. - snapshots.ts: add getAverageAtmIv(symbol, days) - datafetch.ts: save snapshot per scan; compute baselineIv, baselineSrc, baselineN, ivJumpPct; spike from jump threshold - options.ts: /api/scan returns new baseline + jump fields - scanner.html: header copy, table columns (Baseline IV, IV Δ%), default sort by ivJumpPct desc, separate SPIKE/BIG MOVE badges Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>