Autocomplete feedback loop: implicit rejection + weekly rating

A) Implicit: HomeViewModel tracks auto-assigned slot IDs after each
   autocomplete run. When the user manually replaces one of those dishes,
   the rejected dish ID is recorded in FeedbackStore (UserDefaults).
   AutocompleteEngine applies a 25% penalty per rejection (floor 0.30).

B) Explicit: WeekPlan gains userRating (0/1/-1). Past weeks with dishes
   show a compact 👍/👎 row (Premium only). Liked weeks boost their
   dishes (+0.20 each, max +0.50); disliked weeks penalise them
   (-0.25 each, max -0.50). Signal is intentionally modest so the
   period cycle score remains dominant.

Also adds Stats + week-rating localization strings to all 6 languages
(were missing from the previous commit).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

MealMood/ViewModels/HomeViewModel.swift

@@ -16,6 +16,7 @@ final class HomeViewModel: ObservableObject {
     }
 
     @Published var currentWeekStart: Date
+    private var autoAssignedSlotIds: Set<UUID> = []
     @Published var isAutoCompleting: Bool = false
     @Published var showConfetti: Bool = false
     @Published var showToast: Bool = false
@@ -80,6 +81,11 @@ final class HomeViewModel: ObservableObject {
     }
 
     func assignDish(_ dish: Dish, to slot: MealSlot, plan: WeekPlan, settings: AppSettings, isOverride: Bool = false) {
+        if autoAssignedSlotIds.contains(slot.id),
+           let previous = slot.dishId, previous != dish.id {
+            FeedbackStore.recordRejection(for: previous)
+            autoAssignedSlotIds.remove(slot.id)
+        }
         captureUndoSnapshot(plan: plan)
 
         if let oldEventId = slot.calendarEventId {
@@ -128,8 +134,10 @@ final class HomeViewModel: ObservableObject {
             currentPlan: plan,
             allDishes: dishes,
             allTags: tags,
-            recentPlans: Array(recentPlans)
+            recentPlans: Array(recentPlans),
+            rejectionCounts: FeedbackStore.rejectionCounts()
         )
+        autoAssignedSlotIds = Set(result.filledSlots.map(\.slotId))
 
         plan.updatedAt = Date()
         applyCalendarSyncPolicy(plan: plan, settings: settings, shouldNotify: false)
@@ -157,7 +165,14 @@ final class HomeViewModel: ObservableObject {
         }
     }
 
+    func rateWeek(plan: WeekPlan, rating: Int) {
+        plan.userRating = rating
+        plan.updatedAt = Date()
+        HapticManager.shared.impact(style: .light)
+    }
+
     func resetWeek(plan: WeekPlan, settings: AppSettings) {
+        autoAssignedSlotIds = []
         captureUndoSnapshot(plan: plan)
 
         for slot in plan.slots {