✨ feat: add automatic widget reload on data changes

Add WidgetReloader dependency to automatically reload widgets when timetable or theme data changes in UserDefaults repositories. This ensures widgets stay in sync with app data without manual refresh.

Author: shp7724

SNUTT/Modules/Feature/Themes/Sources/Infra/ThemeUserDefaultsRepository.swift

@@ -12,6 +12,7 @@ import ThemesInterface
 
 struct ThemeUserDefaultsRepository: ThemeLocalRepository {
     @Dependency(\.userDefaults) private var userDefaults
+    @Dependency(\.widgetReloader) private var widgetReloader
 
     func loadAvailableThemes() -> [Theme] {
         guard let data = userDefaults.data(forKey: Keys.availableThemes.rawValue),
@@ -23,6 +24,7 @@ struct ThemeUserDefaultsRepository: ThemeLocalRepository {
     func storeAvailableThemes(_ themes: [Theme]) {
         guard let data = try? JSONEncoder().encode(themes) else { return }
         userDefaults.set(data, forKey: Keys.availableThemes.rawValue)
+        widgetReloader.reloadAll()
     }
 
     private enum Keys: String {

SNUTT/Modules/Feature/Timetable/Sources/Infra/TimetableUserDefaultsRepository.swift

@@ -13,6 +13,7 @@ import TimetableUIComponents
 
 struct TimetableUserDefaultsRepository: TimetableLocalRepository {
     @Dependency(\.userDefaults) private var userDefaults
+    @Dependency(\.widgetReloader) private var widgetReloader
 
     func loadSelectedTimetable() throws -> Timetable {
         try userDefaults.object(forKey: Keys.currentTimetable.rawValue, type: Timetable.self)
@@ -21,6 +22,7 @@ struct TimetableUserDefaultsRepository: TimetableLocalRepository {
     func storeSelectedTimetable(_ timetable: Timetable) throws {
         let data = try JSONEncoder().encode(timetable)
         userDefaults.set(data, forKey: Keys.currentTimetable.rawValue)
+        widgetReloader.reloadAll()
     }
 
     func loadTimetableConfiguration() -> TimetableConfiguration {
@@ -29,6 +31,7 @@ struct TimetableUserDefaultsRepository: TimetableLocalRepository {
 
     func storeTimetableConfiguration(_ configuration: TimetableConfiguration) {
         userDefaults[\.timetableConfiguration] = configuration
+        widgetReloader.reloadAll()
     }
 
     func configurationValues() -> AsyncStream<TimetableConfiguration> {

SNUTT/Modules/Utility/DependenciesUtility/Sources/WidgetReloaderDependency.swift

@@ -0,0 +1,32 @@
+//
+//  WidgetReloaderDependency.swift
+//  SNUTT
+//
+//  Copyright © 2026 wafflestudio.com. All rights reserved.
+//
+
+import Dependencies
+import WidgetKit
+
+public struct WidgetReloader: Sendable {
+    public let reloadAll: @Sendable () -> Void
+
+    public init(reloadAll: @escaping @Sendable () -> Void) {
+        self.reloadAll = reloadAll
+    }
+}
+
+public enum WidgetReloaderKey: DependencyKey {
+    public static let liveValue: WidgetReloader = .init(
+        reloadAll: { WidgetCenter.shared.reloadAllTimelines() }
+    )
+
+    public static let testValue: WidgetReloader = .init(reloadAll: {})
+}
+
+extension DependencyValues {
+    public var widgetReloader: WidgetReloader {
+        get { self[WidgetReloaderKey.self] }
+        set { self[WidgetReloaderKey.self] = newValue }
+    }
+}

SNUTT/Project.swift

@@ -23,6 +23,7 @@ let project = Project.app(
                 .target(name: "SwiftUIUtility"),
                 .target(name: "SwiftUtility"),
                 .target(name: "FoundationUtility"),
+                .target(name: "DependenciesUtility"),
                 .target(name: "SharedUIComponents"),
                 .target(name: "SharedUIMapKit"),
                 .external(name: "Dependencies"),
@@ -337,6 +338,7 @@ let project = Project.app(
             dependencies: [
                 .external(name: "Dependencies"),
                 .external(name: "DependenciesAdditions"),
+                .sdk(name: "WidgetKit", type: .framework),
             ]
         ),
         .module(