M3 palette consistency: orphaned B-blue monogram + old text-0 in OG billboards

Token alignment (M3.1) orphaned a few bare literals: PlayerAvatar's team-less
monogram accent still fell back to the retired B-blue #4A9EFF → Design neutral
#B8BCC8; the player/u OG + portrait billboards painted old text-0 #E8E8F0 →
Design #F0F0F0 (satori canvas needs literals).

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

web/src/app/player/[name]/opengraph-image.tsx

@@ -20,7 +20,7 @@ export default async function Image({ params }: { params: Promise<{ name: string
           width: '100%',
           height: '100%',
           background: '#06060B',
-          color: '#E8E8F0',
+          color: '#F0F0F0',
           padding: 72,
           fontFamily: 'monospace',
         }}

web/src/app/u/[handle]/opengraph-image.tsx

@@ -41,7 +41,7 @@ export default async function Image({ params }: { params: Promise<{ handle: stri
           width: '100%',
           height: '100%',
           background: '#06060B',
-          color: '#E8E8F0',
+          color: '#F0F0F0',
           padding: 72,
           fontFamily: 'monospace',
         }}

web/src/app/u/[handle]/portrait/route.tsx

@@ -67,7 +67,7 @@ export async function GET(
           width: '100%',
           height: '100%',
           background: '#06060B',
-          color: '#E8E8F0',
+          color: '#F0F0F0',
           padding: 90,
           fontFamily: 'monospace',
         }}