TASK 1 — Parlay Lab (/parlay): a dedicated Correlation Builder with a
leg source INDEPENDENT of the live slate. Browses tonight's pre-graded
props from /api/snapshot/:sport (resolves players via /api/players/search),
adds legs through useParlay().addLeg (deduped by legKey), and renders the
PARLAY SLIP — combined grade, correlation, and payout read straight off
ParlayContext. Surfaces parlayService's correlation warning as the
CAUTION · CORRELATION FLAG, honors the tier leg-cap (free 2 / analyst 4 /
desk 6) and blurs the payout for free tier with the __goPaywall upsell.
Added /parlay to OPEN_ROUTES (free funnel, like scan/dashboard). Retired
the cleanly-dead ParlayTray.tsx (unmounted since Session 50). No new
proxies — reuses existing snapshot/search/parlay-grade endpoints.
TASK 2 — Live Grade-Shift timeline: web/src/lib/gradeShift.js (pure,
testable) builds a line/grade-movement timeline from already-emitted data
(intraday {t,line} history + revised_from_grade). Color law mirrors
ROW-GRAMMAR / StatStrip.LineSparkline: green = toward the graded side,
amber = against, dim = flat (never red). GradeShift.tsx renders it, shows
the original grade struck-through on a revision, and self-hides below 3
real points. Mounted in GradeResultCard (self-hides on the scan path,
which carries no captured history — honest, never fabricated).
Tests: tests/unit/gradeShift.test.js (15) + tests/unit/parlayLab.test.js
(13). Full suite 245 suites / 2989 tests green (baseline 243/2961).
Next build EXIT=0.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
builtbykev
911cae4992