feat(wizard): add all wizard step components

- DatesStep: date range selection with duration indicator
- RegionsStep: geographic region selection
- RoutePreferenceStep: direct/scenic/balanced preference
- RepeatCitiesStep: unique vs repeat city visits
- MustStopsStep: optional must-stop locations
- ReviewStep: summary and plan button

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

SportsTime/Features/Trip/Views/Wizard/Steps/MustStopsStep.swift

@@ -0,0 +1,85 @@
+//
+//  MustStopsStep.swift
+//  SportsTime
+//
+//  Step 7 of the trip wizard - add must-stop locations.
+//
+
+import SwiftUI
+
+struct MustStopsStep: View {
+    @Environment(\.colorScheme) private var colorScheme
+    @Binding var mustStopLocations: [LocationInput]
+    @State private var showLocationSearch = false
+
+    var body: some View {
+        VStack(alignment: .leading, spacing: Theme.Spacing.md) {
+            StepHeader(
+                title: "Any must-stop locations?",
+                subtitle: "Optional - add cities you want to visit"
+            )
+
+            if !mustStopLocations.isEmpty {
+                VStack(spacing: Theme.Spacing.xs) {
+                    ForEach(mustStopLocations, id: \.name) { location in
+                        HStack {
+                            Image(systemName: "mappin.circle.fill")
+                                .foregroundStyle(Theme.warmOrange)
+
+                            Text(location.name)
+                                .font(.subheadline)
+                                .foregroundStyle(Theme.textPrimary(colorScheme))
+
+                            Spacer()
+
+                            Button {
+                                mustStopLocations.removeAll { $0.name == location.name }
+                            } label: {
+                                Image(systemName: "xmark.circle.fill")
+                                    .foregroundStyle(Theme.textMuted(colorScheme))
+                            }
+                        }
+                        .padding(Theme.Spacing.sm)
+                        .background(Theme.cardBackgroundElevated(colorScheme))
+                        .clipShape(RoundedRectangle(cornerRadius: Theme.CornerRadius.medium))
+                    }
+                }
+            }
+
+            Button {
+                showLocationSearch = true
+            } label: {
+                HStack {
+                    Image(systemName: "plus.circle.fill")
+                    Text(mustStopLocations.isEmpty ? "Add a location" : "Add another")
+                }
+                .font(.subheadline)
+                .foregroundStyle(Theme.warmOrange)
+            }
+
+            Text("Skip this step if you don't have specific cities in mind")
+                .font(.caption)
+                .foregroundStyle(Theme.textMuted(colorScheme))
+        }
+        .padding(Theme.Spacing.lg)
+        .background(Theme.cardBackground(colorScheme))
+        .clipShape(RoundedRectangle(cornerRadius: Theme.CornerRadius.large))
+        .overlay {
+            RoundedRectangle(cornerRadius: Theme.CornerRadius.large)
+                .stroke(Theme.surfaceGlow(colorScheme), lineWidth: 1)
+        }
+        .sheet(isPresented: $showLocationSearch) {
+            LocationSearchSheet(inputType: .mustStop) { location in
+                mustStopLocations.append(location)
+            }
+        }
+    }
+}
+
+// MARK: - Preview
+
+#Preview {
+    MustStopsStep(mustStopLocations: .constant([]))
+        .padding()
+        .themedBackground()
+}