1.2.0: contextual notifications + in-onboarding auto-fill (aha moment)

- New "Week Ready" onboarding step: auto-fills the first week inline right
  after dish creation, then pitches the Sunday reminder with context before
  requesting OS notification permission (no more cold prompt on Home)
- Notifications section in Settings: weekly reminder toggle, deep-link to
  system settings when permission is denied
- NotificationService: remindersEnabled preference, requestPermission(),
  authorizationStatus(), cancelAllReminders()
- Post-onboarding premium prompt deferred to 2nd session (paywall was just
  shown as the final onboarding step — 2s-later alert was prompt fatigue)
- Back navigation blocked after onboarding commit to avoid duplicate dishes
- 10 new strings × 6 languages

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01UtWT52pAE91D7mbDda1cAM

MealMood/Views/Home/HomeView.swift

@@ -515,7 +515,8 @@ struct HomeView: View {
             StatsView(weekPlans: weekPlans, allDishes: dishes, allTags: tags, language: settings.languageEnum.resolved())
         }
         .task {
-            await NotificationService.shared.requestPermissionIfNeeded()
+            // Permission is now requested contextually (onboarding Week Ready step or
+            // the Settings toggle) — no cold OS prompt on first Home load.
             let nextPlan = fetchWeekPlan(for: Date().startOfWeek().addingDays(7))
             NotificationService.shared.schedulePlanningReminderIfNeeded(
                 nextWeekPlan: nextPlan,
@@ -986,6 +987,13 @@ struct HomeView: View {
         let shouldShowPremiumPrompt = UserDefaults.standard.bool(forKey: OnboardingViewModel.pendingPremiumPromptKey)
         guard shouldShowPremiumPrompt else { return }
 
+        // The paywall was just shown as the final onboarding step — prompting again
+        // 2s later is prompt fatigue. Defer to the second session instead.
+        let sessionCountKey = "post_onboarding_session_count"
+        let sessions = UserDefaults.standard.integer(forKey: sessionCountKey) + 1
+        UserDefaults.standard.set(sessions, forKey: sessionCountKey)
+        guard sessions >= 2 else { return }
+
         DispatchQueue.main.asyncAfter(deadline: .now() + 2.0) {
             showPostOnboardingPremiumPrompt = true
         }