docs: grade-board sort fingerprinted (deploy boundary captured; ladder induced both directions)

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QJs13VsyiSKYQP6rj3NNmc
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Kev
2026-07-29 21:18:25 -04:00
parent b85b351993
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> locks: disagreement never outranks agreement, missing sorts LAST and stays present, null/'' edge is
> absent-not-zero, takeable p_win beats untakeable higher-p_win chalk, scales never mixed, the two
> takeable bands match, grade tier still dominates, and the ladder order for BOTH directions.
> ### ✅ POST-DEPLOY FINGERPRINT (commit `b85b351`, both halves VERIFIED)
> **Client half — before/after captured, not inferred.** Polled the deployed `/dashboard` chunks every
> 15s: attempts 1-3 served the OLD key (`Math.abs(...-1/0)` present, new comparator absent); **attempt
> 4 flipped — new comparator present, OLD abs-key GONE.** Both states observed across the deploy
> boundary. API health after deploy: `/api/snapshot/mlb` 200, `/api/snapshot/wnba` 200, `/api/accuracy` 200.
> **Backend half — REAL LADDER PATH INDUCED ON DEMAND** (not waiting on a cron slot), `analyzeViaEngine1`
> with live MLB game logs: **OVER** Junior Caminero hits @0.5 → grade C, p_win 0.644, ladder
> `0.5•(C) 1(C) 1.5(F)` = **line-ASC PASS**; **UNDER** @1.5 → grade C, p_win 0.662, ladder
> `2.5(C) 2(C) 1.5•(C) 1(C) 0.5(F)` = **line-DESC PASS**. Both directions correct on the real engine,
> `base` rung marked in both. (The Supabase-backed side-signals logged lookup failures locally — the
> known WSL2 `*.supabase.co` DNS blocker, BLOCKER-003 — the grade + ladder still computed from real
> stats.) `model_snapshots.code_sha` will independently stamp `b85b351` on the next tick (latest is
> `9b5235c`); the on-demand induction above is the verification, not that stamp.
> **HELD:** edge_pct rescale/display retirement (Order B) · building the missing
> `/api/props/top-graded` server selector (that is what would make the board render at all) ·
> exposing p_win to unentitled tiers. **Dashboard + Desk visuals are auth/feed-gated → TAGGED FOR