P0-1 fix: ledger/u grade badges are token-derived — kill blue-B / amber-C / non-A glow

Phone audit found LEDGER READ CARDS rendering B badges with BLUE borders + C
with AMBER right now in prod — GradePill (components/GradeCard.tsx) hardcoded the
OLD palette (rgba(74,158,255) blue-B, rgba(255,179,71) amber-C) for bg/border
while the text used the migrated token. Migrated bg/border to color-mix on the
grade token, so B renders neutral-white and C grey (matching the board).
- globals.css .grade-*-bg → token-derived color-mix (was raw blue/amber rgba).
- DELETED glow from .grade-glow-b/c/d (glow is A-tier ONLY, by law) — B/C/D keep
  their token color, no text-shadow.
- Purged the last dead grade-blue #4A9EFF fallbacks (SoccerGradeResult, the
  intelligence INFO dot).
- REGRESSION LOCK: vyndrParityQA fails if #4a9eff / rgba(74,158,255) reappears
  anywhere in web/src, if GradePill hardcodes blue/amber rgba, or if grade-glow
  B/C/D grow a text-shadow again.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

web/src/app/globals.css

@@ -374,10 +374,11 @@ h1, h2, h3, h4, h5, h6 {
 .grade-c-tier { color: var(--grade-c); }
 .grade-d-tier { color: var(--grade-d); }
 
-.grade-a-bg { background: rgba(0, 200, 150, 0.10); border-color: rgba(0, 200, 150, 0.30); }
-.grade-b-bg { background: rgba(74, 158, 255, 0.10); border-color: rgba(74, 158, 255, 0.30); }
-.grade-c-bg { background: rgba(255, 179, 71, 0.10); border-color: rgba(255, 179, 71, 0.30); }
-.grade-d-bg { background: rgba(255, 107, 107, 0.10); border-color: rgba(255, 107, 107, 0.30); }
+/* P0-1 — token-derived (was hardcoded blue-B / amber-C old palette). */
+.grade-a-bg { background: color-mix(in srgb, var(--grade-a) 10%, transparent); border-color: color-mix(in srgb, var(--grade-a) 30%, transparent); }
+.grade-b-bg { background: color-mix(in srgb, var(--grade-b) 10%, transparent); border-color: color-mix(in srgb, var(--grade-b) 30%, transparent); }
+.grade-c-bg { background: color-mix(in srgb, var(--grade-c) 10%, transparent); border-color: color-mix(in srgb, var(--grade-c) 30%, transparent); }
+.grade-d-bg { background: color-mix(in srgb, var(--grade-d) 10%, transparent); border-color: color-mix(in srgb, var(--grade-d) 30%, transparent); }
 
 /* ─────────────────────────────────────────────────────────
    Animations
@@ -817,11 +818,13 @@ body.tex-grain::before {
 }
 
 /* CRT phosphor glow utility for grade letters */
+/* GLOW = A-TIER ONLY (law). B/C/D glow classes DELETED (P0-1) — a glowing B/C/D
+   devalues the cue. B/C/D letters take their token color with no text-shadow. */
 .grade-glow-aplus { color: var(--grade-aplus); text-shadow: 0 0 18px var(--grade-aplus), 0 0 36px rgba(0, 255, 184, 0.40); }
 .grade-glow-a     { color: var(--grade-a);     text-shadow: 0 0 14px rgba(0, 212, 160, 0.70), 0 0 30px rgba(0, 212, 160, 0.30); }
-.grade-glow-b     { color: var(--grade-b);     text-shadow: 0 0 12px rgba(74, 158, 255, 0.60), 0 0 24px rgba(74, 158, 255, 0.20); }
-.grade-glow-c     { color: var(--grade-c);     text-shadow: 0 0 12px rgba(255, 179, 71, 0.55); }
-.grade-glow-d     { color: var(--grade-d);     text-shadow: 0 0 12px rgba(255, 82, 82, 0.55); }
+.grade-glow-b     { color: var(--grade-b); }
+.grade-glow-c     { color: var(--grade-c); }
+.grade-glow-d     { color: var(--grade-d); }
 
 @media (prefers-reduced-motion: reduce) {
   *, *::before, *::after {

web/src/app/intelligence/page.tsx

@@ -18,7 +18,7 @@ type Signal = {
 const SEVERITY: Record<Signal['severity'], { dot: string; label: string }> = {
   critical: { dot: '#FF4757', label: 'CRITICAL' },
   notable:  { dot: '#FFB347', label: 'NOTABLE' },
-  info:     { dot: '#4A9EFF', label: 'INFO' },
+  info:     { dot: '#6C8CFF', label: 'INFO' },
 };
 
 const SPORT_COLOR: Record<Signal['sport'], string> = {