Report-only. No threshold, grade, or efficiency value changed.
VERDICT: FLAT. marketEfficiency.js does not exist (zero occurrences of
market_efficiency / efficiency_score in src/ or web/src/). The spec's
0.85/0.60/0.55 values appear in grade_thresholds.json only as PROBABILITY
BANDS - a coincidental numeric overlap, not efficiency scores.
The base edge thresholds (MLB A:5%, NBA A:7%) do not exist either: engine1.js
has zero `edge` references, so the live grade is not an edge-vs-threshold
comparison at all. The specced rule threshold = base x efficiency has no host.
DISPOSITIVE: engine1.js contains ZERO `sport` references. computeFactors
receives no sport or market, so per-market OR per-sport scaling is structurally
impossible in the live grader - not merely unwired.
Phase 2: the matched-edge test is confounded (edge is not the grading input -
the same market emits both B and C at one edge). The aggregate that
discriminates: mean grade index wnba points 4.71 at mean edge 10.2 vs mlb hits
4.58 at 69.5 vs mlb total_bases 4.32 at 84.9 - the efficient market earns the
highest grades on one-eighth the edge, the opposite of spec.
PREMISE CORRECTION (measured): this order's opening claim that full-output and
collapsed grades "agree 100%" does not hold - on 512 rows carrying both they
agree 17.8%, with 33.8% differing by 3+ tiers. The prior discrimination result
stands (champion r=0.0050 null vs probability r=0.1313; MLB 0.0686 n.s. vs
0.2356 p~0.0004). Repo unchanged between orders. The collapse was not a
phantom and the re-adjudication list stays open.
Scope: flat thresholds are a grade-CALIBRATION gap only - the projection and
the CLV edge (which measured p_win, never the letter) are untouched, so this is
not a third shadow-model alarm. But the fix is NOT independently bounded: with
no threshold step to multiply, efficiency scaling presupposes probability
grading. It is rule R4 of specs/full-output-grade-mapping.md and belongs to
that MLB-first challenger.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QJs13VsyiSKYQP6rj3NNmc
builtbykev
a6afac43cc