Add UI redesign: design system, dashboard density, game intelligence, feed tab, league leaders

Phase 1 - Design System: DesignSystem.swift (typography, colors, spacing
constants) and DataPanel.swift (reusable panel container with 3 densities
and optional team accent bar).

Phase 2 - Dashboard Density: LiveSituationBar (compact strip of all live
games with scores/innings/outs), MiniLinescoreView (R-H-E footer for game
cards), DiamondView (visual baseball diamond with runners and count).
Dashboard shows live situation bar when games are active. Game cards now
display mini linescore for live/final games.

Phase 3 - Game Center Intelligence: WinProbabilityChartView (full-game
line chart using Swift Charts with area fills), PitchArsenalView (pitch
type distribution with velocity bars). GameCenterViewModel now stores
full WP history array instead of just latest values.

Phase 4 - Feed Tab: MLBWebDataService (fetches league leaders from Stats
API, news headlines, transactions), FeedViewModel, FeedView with
reverse-chronological feed items. FeedItemView with colored edge bars
by category. Added 5th "Feed" tab to both tvOS and iOS.

Phase 5 - Intel Tab: LeaderboardView (top-5 stat cards with headshots),
integrated into LeagueCenterView. Renamed tabs: Games->Today,
League->Intel. LeagueCenterViewModel now fetches league leaders.

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

mlbTVOS/Views/GameCardView.swift

@@ -28,13 +28,24 @@ struct GameCardView: View {
                 }
                 .padding(.horizontal, 22)
 
-                Spacer(minLength: 14)
+                // Mini linescore for live/final games
+                if let linescore = game.linescore, !game.status.isScheduled {
+                    MiniLinescoreView(
+                        linescore: linescore,
+                        awayCode: game.awayTeam.code,
+                        homeCode: game.homeTeam.code
+                    )
+                    .padding(.horizontal, 22)
+                    .padding(.top, 10)
+                }
+
+                Spacer(minLength: 10)
 
                 footer
                     .padding(.horizontal, 22)
-                    .padding(.vertical, 16)
+                    .padding(.vertical, 14)
             }
-            .frame(maxWidth: .infinity, minHeight: 320, maxHeight: 320, alignment: .topLeading)
+            .frame(maxWidth: .infinity, minHeight: 320, alignment: .topLeading)
             .background(cardBackground)
             .overlay(alignment: .top) {
                 HStack(spacing: 0) {