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/Views/Home/HomeView.swift

@@ -244,6 +244,10 @@ struct HomeView: View {
                     exportCallout(plan: plan, settings: settings)
                 }
 
+                if !viewModel.canEditCurrentWeek && filledCount > 0 && settings.isPremium {
+                    weekRatingRow(plan: plan)
+                }
+
                 let emptyCount = plan.slots.filter { $0.dishId == nil && !$0.isEatingOut }.count
                 if viewModel.canEditCurrentWeek && !dishes.isEmpty && emptyCount > 0 {
                     autoAssignBanner(emptyCount: emptyCount, plan: plan, settings: settings)
@@ -635,6 +639,36 @@ struct HomeView: View {
         }
     }
 
+    private func weekRatingRow(plan: WeekPlan) -> some View {
+        HStack(spacing: 12) {
+            Text("week_rating_prompt")
+                .font(.mealMoodSmall)
+                .foregroundColor(.mealMoodTextSecondary)
+
+            Spacer()
+
+            Button {
+                viewModel.rateWeek(plan: plan, rating: plan.userRating == 1 ? 0 : 1)
+            } label: {
+                Image(systemName: plan.userRating == 1 ? "hand.thumbsup.fill" : "hand.thumbsup")
+                    .font(.system(size: 17))
+                    .foregroundColor(plan.userRating == 1 ? .mealMoodSuccess : .mealMoodTextSecondary)
+            }
+
+            Button {
+                viewModel.rateWeek(plan: plan, rating: plan.userRating == -1 ? 0 : -1)
+            } label: {
+                Image(systemName: plan.userRating == -1 ? "hand.thumbsdown.fill" : "hand.thumbsdown")
+                    .font(.system(size: 17))
+                    .foregroundColor(plan.userRating == -1 ? .mealMoodCoral : .mealMoodTextSecondary)
+            }
+        }
+        .padding(.horizontal, 14)
+        .padding(.vertical, 10)
+        .background(Color.mealMoodSurface)
+        .clipShape(RoundedRectangle(cornerRadius: 12))
+    }
+
     private func dishDrawer(plan: WeekPlan, settings: AppSettings) -> some View {
         DishDrawerView(
             dishes: dishes,