mana-swift-ui/Sources/ManaThemeUI/ManaAppearancePicker.swift

import SwiftUI

/// Segmentierter Hell/Dunkel/Automatik-Wähler. Pure View — bindet an
/// eine app-gehaltene ``ManaAppearanceMode``-Auswahl (typisch
/// `@AppStorage`), persistiert selbst nichts.
///
/// ```swift
/// @AppStorage("myapp.appearance") private var raw = ManaAppearanceMode.system.rawValue
/// ManaAppearancePicker(selection: Binding(
///     get: { ManaAppearanceMode(rawValue: raw) ?? .system },
///     set: { raw = $0.rawValue }
/// ))
/// ```
public struct ManaAppearancePicker: View {
	@Binding private var selection: ManaAppearanceMode

	public init(selection: Binding<ManaAppearanceMode>) {
		_selection = selection
	}

	public var body: some View {
		Picker("Erscheinung", selection: $selection) {
			ForEach(ManaAppearanceMode.allCases) { mode in
				Label(mode.label, systemImage: mode.icon).tag(mode)
			}
		}
		.pickerStyle(.segmented)
		.labelsHidden()
	}
}