fix: region map tap selecting wrong region due to accessibility button overlay

Accessibility buttons split the map into equal-width thirds, intercepting
taps before the coordinate-based logic. Tapping the visual West region
could hit the Central button. Adding .allowsHitTesting(false) lets taps
pass through to MapReader's coordinate detection; VoiceOver still works.

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

SportsTime/Features/Trip/Views/RegionMapSelector.swift

@@ -56,13 +56,15 @@ struct RegionMapSelector: View {
                     .mapStyle(.standard(elevation: .flat, pointsOfInterest: .excludingAll))
                     .onTapGesture { location in
                         if let coordinate = proxy.convert(location, from: .local) {
-                            let tappedRegion = regionForCoordinate(coordinate)
+                            let tappedRegion = Self.regionForCoordinate(coordinate)
                             onToggle(tappedRegion)
                         }
                     }
                 }
 
                 // Invisible button overlays for UI testing accessibility
+                // allowsHitTesting(false) lets taps pass through to the map's
+                // coordinate-based region detection; VoiceOver still reads these.
                 HStack(spacing: 0) {
                     Button { onToggle(.west) } label: { Color.clear }
                         .accessibilityIdentifier("wizard.regions.west")
@@ -98,6 +100,7 @@ struct RegionMapSelector: View {
                         .accessibilityAddTraits(selectedRegions.contains(.east) ? .isSelected : [])
                         .frame(maxWidth: .infinity)
                 }
+                .allowsHitTesting(false)
             }
             .frame(height: 160)
             .clipShape(RoundedRectangle(cornerRadius: Theme.CornerRadius.medium))
@@ -128,7 +131,9 @@ struct RegionMapSelector: View {
     /// West: States west of ~-102° (WA, OR, CA, NV, ID, UT, AZ, MT, WY, CO, NM)
     /// Central: States between ~-102° and ~-89° (ND, SD, NE, KS, OK, TX, MN, IA, MO, AR, LA, WI, IL)
     /// East: States east of ~-89°
-    private func regionForCoordinate(_ coordinate: CLLocationCoordinate2D) -> Region {
+    /// Maps a tap coordinate to a region based on the visual polygon boundaries.
+    /// Thresholds match the drawn polygon edges (not Region.classify which uses stadium locations).
+    static func regionForCoordinate(_ coordinate: CLLocationCoordinate2D) -> Region {
         let longitude = coordinate.longitude
         if longitude < -102 {
             return .west