diff --git a/MealMood/Services/AutocompleteEngine.swift b/MealMood/Services/AutocompleteEngine.swift
index f1fb077..3c37817 100644
--- a/MealMood/Services/AutocompleteEngine.swift
+++ b/MealMood/Services/AutocompleteEngine.swift
@@ -24,8 +24,8 @@ struct AutocompleteEngine {
         recentPlans: [WeekPlan] = [],
         rejectionCounts: [UUID: Int] = [:]
     ) -> AutocompleteResult {
-        let tagMap = Dictionary(uniqueKeysWithValues: allTags.map { ($0.id, $0) })
-        let dishMap = Dictionary(uniqueKeysWithValues: allDishes.map { ($0.id, $0) })
+        let tagMap = Dictionary(allTags.map { ($0.id, $0) }, uniquingKeysWith: { first, _ in first })
+        let dishMap = Dictionary(allDishes.map { ($0.id, $0) }, uniquingKeysWith: { first, _ in first })
         let historyScores = periodScores(dishes: allDishes, recentPlans: recentPlans, currentWeekStart: currentPlan.weekStartDate)
         let ratingScores = Self.ratingScores(dishes: allDishes, recentPlans: recentPlans)
 
@@ -77,7 +77,7 @@ struct AutocompleteEngine {
     }
 
     static func findViolations(plan: WeekPlan, allDishes: [Dish], allTags: [Tag]) -> [RuleViolation] {
-        let dishMap = Dictionary(uniqueKeysWithValues: allDishes.map { ($0.id, $0) })
+        let dishMap = Dictionary(allDishes.map { ($0.id, $0) }, uniquingKeysWith: { first, _ in first })
         return plan.slotList.compactMap { slot in
             guard let dishId = slot.dishId,
                   let dish = dishMap[dishId],
@@ -100,8 +100,8 @@ struct AutocompleteEngine {
         allTags: [Tag],
         allDishes: [Dish]
     ) -> Bool {
-        let tagMap = Dictionary(uniqueKeysWithValues: allTags.map { ($0.id, $0) })
-        let dishMap = Dictionary(uniqueKeysWithValues: allDishes.map { ($0.id, $0) })
+        let tagMap = Dictionary(allTags.map { ($0.id, $0) }, uniquingKeysWith: { first, _ in first })
+        let dishMap = Dictionary(allDishes.map { ($0.id, $0) }, uniquingKeysWith: { first, _ in first })
         return !violatesRules(dish: dish, slot: slot, plan: plan, tagMap: tagMap, dishMap: dishMap)
     }
 
diff --git a/MealMood/Services/FeedbackStore.swift b/MealMood/Services/FeedbackStore.swift
index fb84599..847fd7f 100644
--- a/MealMood/Services/FeedbackStore.swift
+++ b/MealMood/Services/FeedbackStore.swift
@@ -7,9 +7,9 @@ struct FeedbackStore {
         guard let data = UserDefaults.standard.data(forKey: rejectionKey),
               let raw = try? JSONDecoder().decode([String: Int].self, from: data)
         else { return [:] }
-        return Dictionary(uniqueKeysWithValues: raw.compactMap { k, v in
+        return Dictionary(raw.compactMap { k, v in
             UUID(uuidString: k).map { ($0, v) }
-        })
+        }, uniquingKeysWith: { first, _ in first })
     }
 
     static func recordRejection(for dishId: UUID) {
diff --git a/MealMood/ViewModels/HomeViewModel.swift b/MealMood/ViewModels/HomeViewModel.swift
index fb8be0b..42aed4f 100644
--- a/MealMood/ViewModels/HomeViewModel.swift
+++ b/MealMood/ViewModels/HomeViewModel.swift
@@ -352,9 +352,9 @@ final class HomeViewModel: ObservableObject {
     private func captureUndoSnapshot(plan: WeekPlan) {
         guard !isApplyingUndo else { return }
         lastWeekStartSnapshot = plan.weekStartDate
-        lastSlotsSnapshot = Dictionary(uniqueKeysWithValues: plan.slotList.map { slot in
+        lastSlotsSnapshot = Dictionary(plan.slotList.map { slot in
             (slot.id, SlotSnapshot(dishId: slot.dishId, isRuleOverridden: slot.isRuleOverridden, isEatingOut: slot.isEatingOut))
-        })
+        }, uniquingKeysWith: { first, _ in first })
         hasUndoSnapshot = true
     }
 
@@ -410,7 +410,7 @@ final class HomeViewModel: ObservableObject {
     }
 
     private func syncAllAssignedSlotsToCalendar(plan: WeekPlan, dishes: [Dish], settings: AppSettings) {
-        let dishById = Dictionary(uniqueKeysWithValues: dishes.map { ($0.id, $0) })
+        let dishById = Dictionary(dishes.map { ($0.id, $0) }, uniquingKeysWith: { first, _ in first })
         for slot in plan.slotList {
             guard let dishId = slot.dishId, let dish = dishById[dishId] else {
                 if let eventId = slot.calendarEventId {
diff --git a/MealMood/Views/Home/WeekCalendarView.swift b/MealMood/Views/Home/WeekCalendarView.swift
index e9bbc18..90b017d 100644
--- a/MealMood/Views/Home/WeekCalendarView.swift
+++ b/MealMood/Views/Home/WeekCalendarView.swift
@@ -344,7 +344,7 @@ struct WeekCalendarView: View {
     }
 
     private func refreshDishSnapshots() {
-        let liveSnapshots = Dictionary(uniqueKeysWithValues: dishes.map { dish in
+        let liveSnapshots = Dictionary(dishes.map { dish in
             (
                 dish.id,
                 DishSnapshot(
@@ -354,7 +354,7 @@ struct WeekCalendarView: View {
                     photoData: dish.photoData
                 )
             )
-        })
+        }, uniquingKeysWith: { first, _ in first })
 
         dishSnapshotsById = dishSnapshotsById.merging(liveSnapshots) { _, new in new }
     }
diff --git a/MealMood/Views/Stats/StatsView.swift b/MealMood/Views/Stats/StatsView.swift
index 4b61314..208d504 100644
--- a/MealMood/Views/Stats/StatsView.swift
+++ b/MealMood/Views/Stats/StatsView.swift
@@ -181,7 +181,7 @@ struct StatsView: View {
 
     private var topDishes: [DishEntry] {
         let usage = dishUsage
-        let dishMap = Dictionary(uniqueKeysWithValues: allDishes.map { ($0.id, $0) })
+        let dishMap = Dictionary(allDishes.map { ($0.id, $0) }, uniquingKeysWith: { first, _ in first })
         return usage
             .compactMap { id, count in dishMap[id].map { DishEntry(dish: $0, count: count) } }
             .sorted { $0.count > $1.count }
@@ -192,8 +192,8 @@ struct StatsView: View {
     private struct TagEntry { let tag: Tag; let count: Int }
 
     private var tagUsage: [TagEntry] {
-        let dishMap = Dictionary(uniqueKeysWithValues: allDishes.map { ($0.id, $0) })
-        let tagMap = Dictionary(uniqueKeysWithValues: allTags.map { ($0.id, $0) })
+        let dishMap = Dictionary(allDishes.map { ($0.id, $0) }, uniquingKeysWith: { first, _ in first })
+        let tagMap = Dictionary(allTags.map { ($0.id, $0) }, uniquingKeysWith: { first, _ in first })
         var counts: [UUID: Int] = [:]
         for plan in weekPlans {
             for slot in plan.slotList {