Move Quick Channels to full-width row below hero card

Quick Channels (MLB Network + Werkout NSFW) were cramped in the right
sidebar with text wrapping ("Networ k"). Moved them out of controlRail
into the main content flow as a full-width HStack. Each card takes
50% width with proper text display. Positioned between the hero section
and game shelves.

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

mlbTVOS/Views/DashboardView.swift

@@ -132,6 +132,9 @@ struct DashboardView: View {
                     heroAndControlSection
                         .platformFocusSection()
 
+                    featuredChannelsSection
+                        .platformFocusSection()
+
                     if !viewModel.liveGames.isEmpty {
                         gameShelf(
                             title: "Live Board",
@@ -599,7 +602,6 @@ struct DashboardView: View {
     private var controlRail: some View {
         VStack(alignment: .leading, spacing: 18) {
             liveRadarPanel
-            featuredChannelsSection
             multiViewStatus
         }
     }
@@ -806,16 +808,12 @@ struct DashboardView: View {
     #endif
 
     private var featuredChannelsSection: some View {
-        VStack(alignment: .leading, spacing: 14) {
-            Text("Quick Channels")
-                .font(railTitleFont)
-                .foregroundStyle(DS.Colors.textPrimary)
-
+        HStack(spacing: DS.Spacing.cardGap) {
             mlbNetworkCard
+                .frame(maxWidth: .infinity)
             nsfwVideosCard
+                .frame(maxWidth: .infinity)
         }
-        .padding(24)
-        .background(surfaceCardBackground())
     }
 
     private var mlbNetworkCard: some View {