The landing hero was a static Jokic "Example" card with a name-length pick and a
hardcoded A- 73% +6.2% fallback. Now it's deterministic and live:
- heroPropService.pickHeroProp reads the pre-graded snapshot and selects the
prop with the LARGEST |projection - line| gap among A/B grades (conviction,
not noise) — the read where VYNDR disagrees most with the market, the card
that makes a stranger argue. No curation, no grading (reads cache → no API
credits). GET /api/hero-prop (backend) + repointed Next proxy.
- The card shows the disagreement EXPLICITLY: the book's line vs VYNDR's model,
side by side (model in green), with the real grade timestamp ("Graded 2:14
PM"). The EXAMPLE chip is gone.
- Empty slate → the MOST RECENT real graded read (flagged "LATEST READ", real
date). Nothing cached → { available:false } and the card HIDES. No
hand-written fallback — the Jokic card is deleted. Survives a dead night: a
live rule shows tonight's real MLB read, never a phantom July NBA card.
7 service tests lock the rule (max-gap, A/B gate, projection/line required,
empty→recent, hidden, cross-sport). colorContract updated to the new
disagreement display. Change-affected suites green, web build exit 0.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Signal-green #00D4A0 now means exactly ONE thing (edge/active/A-tier/CTA),
locked by tests that fail on violation. Part 1 of DESIGN-SPEC v2.
- web/src/lib/colorContract.js — pure CommonJS helpers: edgeColor(value)
colors edge/CLV/delta by SIGN (neg=var(--miss), pos=var(--g-a), 0=neutral);
gradeTierColor() (A/A+ green, B blue, C amber, D/F red, in lockstep with
vyndrTokens.gradeColor); gradeGlows() (A/A+ only); deltaE()/isSignalGreen()
CIE76 gate so no archetype hue dilutes the signal.
- GradeResultCard: edge confidence-strip + EDGE row route through edgeColor
(a -33.3% edge was rendering GREEN — audit #3); grade-hero glow gated to
A/A+ via gradeGlows (a glowing C devalued the cue); VYNDR INTELLIGENCE
panel de-flooded (neutral border, Form/Rest neutral not green — #15).
- LiveHeroProp: negative edge now muted red, not neutral (sign completeness).
- Archetype dedup off signal-green (both archetypes.js + archetypeService.js,
kept matched): DUAL THREAT/MOTOR #00D4A0, MIRROR #34D399, ARTILLERY/RANGE/
GHOST/BLADE #2DD4BF, BRUSH #3DDC84 shifted to distinct non-green hues (all
ΔE>=44 from #00D4A0). Within-sport uniqueness preserved.
- tests/unit/colorContract.test.js — 21 tests: helper units + source-grep
violation locks + archetype-green-dedup. QA.20-22 kept green.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
builtbykev