Complete visual overhaul: warm light theme, stadium hero, inline pill nav

Inspired by vtv/Dribbble streaming concept. Every dark surface replaced
with warm off-white (#F5F3F0) and white cards with soft shadows.

Design System: Warm off-white background, white card fills, subtle drop
shadows, dark text hierarchy, warm orange accent (#F27326) replacing
blue as primary interactive color. Added onDark color variants for hero
overlays. Shadow system with card/lifted states.

Navigation: Replaced TabView with inline CategoryPillBar — horizontal
orange pills (Today | Intel | Highlights | Multi-View | Settings).
Single scrolling view, no system chrome. Multi-View as icon button
with stream count badge. Settings as gear icon.

Stadium Hero: Full-bleed stadium photos from MLB CDN
(mlbstatic.com/v1/venue/{id}/spots/1200) as featured game background.
Left gradient overlay for text readability. Live games show score +
inning + DiamondView count/outs. Scheduled games show probable pitchers
with headshots + records. Final games show final score. Warm orange
"Watch Now" CTA pill. Added venue ID mapping for all 30 stadiums to
TeamAssets.

Game Cards: White cards with team color top bar, horizontal team rows,
dark text, soft shadows. Record + streak on every card.

Intel Tab: All dark panels replaced with white cards + shadows.
Replaced dark gradient screen background with flat warm off-white.
58 hardcoded .white.opacity() values replaced with DS.Colors tokens.

Feed Tab: Already used DS.Colors — inherits light theme automatically.

Focus: tvOS focus style uses warm orange border highlight + lifted
shadow instead of white glow on dark.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

mlbTVOS/Views/Components/DataPanel.swift

@@ -46,6 +46,7 @@ struct DataPanel<Content: View>: View {
         .background(
             RoundedRectangle(cornerRadius: density.cornerRadius)
                 .fill(DS.Colors.panelFill)
+                .shadow(color: DS.Shadows.card, radius: DS.Shadows.cardRadius, y: DS.Shadows.cardY)
         )
         .overlay(
             RoundedRectangle(cornerRadius: density.cornerRadius)
@@ -54,8 +55,6 @@ struct DataPanel<Content: View>: View {
     }
 }
 
-// MARK: - Convenience initializers
-
 extension DataPanel {
     init(
         _ density: DataPanelDensity = .standard,