gahusb
534ded59e8
docs(signal-v2): amend spread formula to absolute (q90-q10) for Chronos-bolt zero-shot reality
Phase 0 spec §6.1 originally specified relative spread (q90-q10)/median < 0.6.
Phase 3b smoke (005930: median=-0.59%, q90-q10=15.3%) revealed Chronos-bolt
zero-shot median frequently sits near zero, causing relative spread to explode
(15.3/0.0059 ≈ 25) and reject every signal. Absolute spread (0.153 < 0.6)
preserves the threshold semantic and keeps Phase 7 IC validation tractable.
Phase 4 spec §4.2 + Phase 0 §6.1 both amended with cross-reference.
chronos_predictor.py conf calculation unchanged — monotonic mapping there
is independent of hard-gate semantics.