Grade-board sort: signed signal, takeable-gated p_win, missing sorts LAST

Display ORDERING only. No grade, ledger row, lock_line, scoring, or edge_pct
scale/display change. Push scoring untouched.

Two defects removed from selectTopGrades (wrong at ANY scale, independent of
edge_pct's separate retirement):
  1. edge: Math.abs(numOr(g.edge, -Infinity)) — abs() on an already-
     direction-signed value ranked the model's strongest DISAGREEMENTS level
     with its strongest agreements (177 public ledger rows carry a negative
     edge; positive = the model AGREES with the graded side).
  2. Math.abs(-Infinity) === Infinity, so a row with NO edge sorted FIRST —
     absent data presented as the top pick (the Number(null) class).

New key: grade -> confidence -> takeable-gated p_win (nulls LAST) -> SIGNED
edge (nulls LAST) -> input order. Scales are never mixed in one comparator.
Takeable band = web valueState.isTakeable, asserted byte-equal to the hero's
config/valueEngine.isTakeable (-160..+200) incl. strict-null.

Alt-line ladder (analyzeViaEngine1:506) no longer sorts by edge_pct: ordered
highest-p_win-first derived analytically at zero added compute — P(stat >= k)
is monotone non-increasing in k, so p_win-desc is line-ASC for an over and
line-DESC for an under. base stays marked; no consumer depends on
alt_lines[0]; deskShowcaseService.rungsOf already re-sorted by line.

THREE PREMISE BREAKS found report-first, before code:
  - /api/props/top-graded 404s in prod (absent from src/) so the dashboard
    board renders receipts/empty — the edge sort orders nothing there today.
    The prior order's "97.3% of rows tie" was a LEDGER measurement wrongly
    extrapolated to that board. Fix is correct-in-itself and lands when the
    feed is restored.
  - p_win cannot be a client-side key for all tiers: snapshotGating strips it
    for unentitled tiers ("shipping p_win is shipping the model price").
    Verified live: prod /api/snapshot carries p_win on 0/8 MLB, 0/25 WNBA.
  - Ladder rungs carry no per-rung price, so the takeable gate is inapplicable.

Verified on real data, both sports, both paths: unentitled — WNBA (n=25)
ordering CHANGED, MLB (n=8) unchanged, signed edge non-increasing in every
(grade,confidence) tie group (20 pairs, 0 violations); entitled — 40 real
ledger rows with p_win+locked_odds, p_win-descending, untakeable chalk NOT
promoted (Trea Turner .757 @-275 does not beat Rhyne Howard .745 @-120)
(36 pairs, 0 violations).

Hero consistency, stated honestly: same signal + same gate, different
precedence BY CONTRACT (board = grade-tier-first "top GRADES"; hero =
p_win-first "top read"). Identical within the leading tier (verified); across
tiers the board may lead with an A the hero doesn't pick. Not a contradiction.

Floor: 310 suites / 3864 tests green, web build exit 0. Dashboard + Desk
visuals are auth/feed-gated -> tagged for the Chrome audit, no visual faked.

Held: edge_pct rescale/display retirement (Order B); building the missing
/api/props/top-graded selector; exposing p_win to unentitled tiers.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QJs13VsyiSKYQP6rj3NNmc

CLAUDE.md

@@ -672,9 +672,11 @@ snapshot, locked to the line, and read from cache.
   props. It's `rbi` now; a normalizer test locks it.
 - **The streaks/hotlist path uses its own `rbis` key** built from raw MLB stats —
   independent of the odds normalizer. Don't "unify" them; the split is intentional.
-- **MLB is the ONLY end-to-end-live sport.** Outcome settlement is MLB-only
-  (WNBA/NBA/soccer grades never settle → `accuracy` reflects MLB only). Fixing
-  that (ESPN box-score settle path) is roadmap Session 57.
+- **MLB and WNBA both settle end-to-end.** CORRECTED 2026-07-26 (was "MLB-only"):
+  `outcomeService.SPORTS` includes wnba, which settles via ESPN box scores
+  (`espnStatsAdapter` box-field map) — verified: 376 WNBA rows settled, settle
+  logic spot-checked correct. NBA/soccer still do not settle (no free settled
+  feed wired). So `accuracy` reflects MLB + WNBA, not MLB only.
 - **`src/utils/opsNotify.js`** pushes pipeline alerts to ntfy (`vyndr-pipeline-
   kev2026`). It NEVER throws and is auto-disabled under `NODE_ENV==='test'` /
   `PIPELINE_ALERTS=0` (inject `fetchImpl` to test it). `snapshotService` alerts on