builtbykev
41b86e3874
Review Zero found the hero's ACTUAL behavior was worse than "unknown": it ranks on ev_pct (heroPropService v2), but ev_pct is NULL on served grades and Number(null)===0 made Number.isFinite(Number(null)) TRUE — so every prop tied at EV 0 and the "top read" was really the FIRST takeable A/B prop in cache order (arbitrary, dressed as ranked). v3: rank by the CHAMPION's p_win (the only signal with a promising, not proven, edge — its takeable-MLB-over CLV survived the skew audit) among A/B, TAKEABLE- priced reads (isTakeable band -160..+200, same as the proof/audit). Strict null guard kills the Number(null)=0 bug. Takeable filter is mandatory (raw p_win crowns -300 chalk). NO backfill: nothing qualifies → honest empty state (available:false, reason:'no_qualifying_read'), never a weak recent read. p_win is RANKING-ONLY, server-side — toHero never exposes it and the route strips it. Framing unchanged in substance (model number vs book number, grade, timestamp) — no proven-edge / +EV / best-bet claim, no CLV/ROI/edge number. Display-only: reads snapshot caches, writes to nothing (no grade/ledger/lock_lines). Full suite 3852 green, web build exit 0. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01VsztNChZ7vEvSR61AuMhD1