Add interactive widget voting and fix warnings/bugs

Widget Features:
- Add inline voting to timeline widget when no entry exists for today
- Show random prompt from notification strings in voting mode
- Update vote widget to use simple icon style for selection
- Make stats bar full width in voted state view
- Add Localizable.strings to widget extension target

Bug Fixes:
- Fix inverted date calculation in InsightsViewModel streak logic
- Replace force unwraps with safe optional handling in widgets
- Replace fatalError calls with graceful error handling
- Fix CSV import safety in SettingsView

Warning Fixes:
- Add @retroactive to Color and Date extension conformances
- Update deprecated onChange(of:perform:) to new syntax
- Replace deprecated applicationIconBadgeNumber with setBadgeCount
- Replace deprecated UIApplication.shared.windows API
- Add @preconcurrency for Swift 6 protocol conformances
- Add missing widget family cases to switch statement
- Remove unused variables and #warning directives

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Shared/AppDelegate.swift

@@ -45,7 +45,7 @@ class AppDelegate: NSObject, UIApplicationDelegate {
     }
 }
 
-extension AppDelegate: UNUserNotificationCenterDelegate {
+extension AppDelegate: @preconcurrency UNUserNotificationCenterDelegate {
     func requestAuthorization() {  }
 
     func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
@@ -68,7 +68,7 @@ extension AppDelegate: UNUserNotificationCenterDelegate {
             case .great:
                 DataController.shared.add(mood: .great, forDate: date, entryType: .notification)
             }
-            UIApplication.shared.applicationIconBadgeNumber = 0
+            UNUserNotificationCenter.current().setBadgeCount(0)
         }
         WidgetCenter.shared.reloadAllTimelines()
         completionHandler()