Fix game times with UTC data, restructure schedule by date

- Update games_canonical.json to use ISO 8601 UTC timestamps (game_datetime_utc)
- Fix BootstrapService timezone-aware parsing for venue-local fallback
- Fix thread-unsafe shared DateFormatter in RichGame local time display
- Bump SchemaVersion to 4 to force re-bootstrap with correct UTC data
- Restructure schedule view: group by date instead of sport, with sport
  icons on each row and date section headers showing game counts
- Fix schedule row backgrounds using Theme.cardBackground instead of black
- Sort games by UTC time with local-time tiebreaker for same-instant games

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

SportsTime/Features/Trip/Views/AddItemSheet.swift

@@ -8,35 +8,6 @@
 import SwiftUI
 import MapKit
 
-/// Category for custom itinerary items with emoji icons
-enum ItemCategory: String, CaseIterable {
-    case restaurant
-    case attraction
-    case fuel
-    case hotel
-    case other
-
-    var icon: String {
-        switch self {
-        case .restaurant: return "\u{1F37D}"   // 🍽️
-        case .attraction: return "\u{1F3A2}"   // 🎢
-        case .fuel: return "\u{26FD}"          // ⛽
-        case .hotel: return "\u{1F3E8}"        // 🏨
-        case .other: return "\u{1F4CC}"        // 📌
-        }
-    }
-
-    var label: String {
-        switch self {
-        case .restaurant: return "Eat"
-        case .attraction: return "See"
-        case .fuel: return "Fuel"
-        case .hotel: return "Stay"
-        case .other: return "Other"
-        }
-    }
-}
-
 /// Legacy sheet for adding/editing custom itinerary items.
 /// - Note: Use `QuickAddItemSheet` instead for new code.
 @available(*, deprecated, message: "Use QuickAddItemSheet instead")
@@ -56,7 +27,6 @@ struct AddItemSheet: View {
     }
 
     @State private var entryMode: EntryMode = .searchPlaces
-    @State private var selectedCategory: ItemCategory = .restaurant
     @State private var title: String = ""
     @State private var isSaving = false
 
@@ -71,9 +41,6 @@ struct AddItemSheet: View {
     var body: some View {
         NavigationStack {
             VStack(spacing: Theme.Spacing.lg) {
-                // Category picker
-                categoryPicker
-
                 // Entry mode picker (only for new items)
                 if !isEditing {
                     Picker("Entry Mode", selection: $entryMode) {
@@ -113,8 +80,6 @@ struct AddItemSheet: View {
             }
             .onAppear {
                 if let existing = existingItem, let info = existing.customInfo {
-                    // Find matching category by icon, default to .other
-                    selectedCategory = ItemCategory.allCases.first { $0.icon == info.icon } ?? .other
                     title = info.title
                     // If editing a mappable item, switch to custom mode
                     entryMode = .custom
@@ -264,20 +229,6 @@ struct AddItemSheet: View {
         return components.isEmpty ? nil : components.joined(separator: ", ")
     }
 
-    @ViewBuilder
-    private var categoryPicker: some View {
-        HStack(spacing: Theme.Spacing.md) {
-            ForEach(ItemCategory.allCases, id: \.self) { category in
-                CategoryButton(
-                    category: category,
-                    isSelected: selectedCategory == category
-                ) {
-                    selectedCategory = category
-                }
-            }
-        }
-    }
-
     private func saveItem() {
         isSaving = true
 
@@ -290,7 +241,7 @@ struct AddItemSheet: View {
 
             let customInfo = CustomInfo(
                 title: trimmedTitle,
-                icon: selectedCategory.icon,
+                icon: "\u{1F4CC}",
                 time: existingInfo.time,
                 latitude: existingInfo.latitude,
                 longitude: existingInfo.longitude,
@@ -312,7 +263,7 @@ struct AddItemSheet: View {
 
             let customInfo = CustomInfo(
                 title: placeName,
-                icon: selectedCategory.icon,
+                icon: "\u{1F4CC}",
                 time: nil,
                 latitude: coordinate.latitude,
                 longitude: coordinate.longitude,
@@ -333,7 +284,7 @@ struct AddItemSheet: View {
 
             let customInfo = CustomInfo(
                 title: trimmedTitle,
-                icon: selectedCategory.icon,
+                icon: "\u{1F4CC}",
                 time: nil
             )
 
@@ -403,36 +354,6 @@ private struct PlaceResultRow: View {
     }
 }
 
-// MARK: - Category Button
-
-private struct CategoryButton: View {
-    let category: ItemCategory
-    let isSelected: Bool
-    let action: () -> Void
-
-    var body: some View {
-        Button(action: action) {
-            VStack(spacing: 4) {
-                Text(category.icon)
-                    .font(.title2)
-                Text(category.label)
-                    .font(.caption2)
-            }
-            .frame(maxWidth: .infinity)
-            .padding(.vertical, 12)
-            .background(isSelected ? Theme.warmOrange.opacity(0.2) : Color.clear)
-            .cornerRadius(8)
-            .overlay(
-                RoundedRectangle(cornerRadius: 8)
-                    .stroke(isSelected ? Theme.warmOrange : Color.secondary.opacity(0.3), lineWidth: isSelected ? 2 : 1)
-            )
-        }
-        .buttonStyle(.plain)
-        .accessibilityValue(isSelected ? "Selected" : "Not selected")
-        .accessibilityAddTraits(isSelected ? .isSelected : [])
-    }
-}
-
 #Preview {
     AddItemSheet(
         tripId: UUID(),