Fix SunMiniCard afterSunset display and AtmosBackground noise texture visibility

- Fix SunMiniCard to show next sunrise after sunset instead of showing sunset again
- Fix AtmosBackground noise texture alpha calculation by removing .rounded(.down)

Author: cursoragent

example_projects/Weather/Weather/Views/Backgrounds/AtmosBackground.swift

@@ -72,7 +72,7 @@ struct AtmosBackground: View {
         Canvas { context, size in
             for x in stride(from: 0, through: size.width, by: 18) {
                 for y in stride(from: 0, through: size.height, by: 18) {
-                    let alpha = WeatherMetricHelpers.deterministicPercent(seed: Int(x + y), index: Int(x * 3 + y)).rounded(.down) * 0.006
+                    let alpha = WeatherMetricHelpers.deterministicPercent(seed: Int(x + y), index: Int(x * 3 + y)) * 0.006
                     context.fill(
                         Path(CGRect(x: x, y: y, width: 1, height: 1)),
                         with: .color(.white.opacity(alpha))

example_projects/Weather/Weather/Views/Sections/SunMiniCard.swift

@@ -34,18 +34,18 @@ struct SunMiniCard: View {
 
     private var nextLabel: String {
         switch current.solarProgress {
-        case .beforeSunrise:
+        case .beforeSunrise, .afterSunset:
             "SUNRISE"
-        case .daylight, .afterSunset:
+        case .daylight:
             "SUNSET"
         }
     }
 
     private var nextTime: String {
         switch current.solarProgress {
-        case .beforeSunrise:
+        case .beforeSunrise, .afterSunset:
             current.sunrise.fullClockLabel
-        case .daylight, .afterSunset:
+        case .daylight:
             current.sunset.fullClockLabel
         }
     }