Fix width bug and rearrange Add Carb Entry view

The fix maintains the existing StackNavigationViewStyle() while adding proper width constraints. This should resolve the issue where the "Add Carb Entry" screen appears too wide and cuts off content after using AI analysis.

We also moved the Food Search enablement toggle and Food Search's section below Absorption Time row for a more logical flow.

Confirmed that the FPU formula implementation is CORRECT and adheres to the standard. No changes are needed to the calculation formula.

Minor tweak to AI prompt.

Author: taylorpatterson-T1D

Loop/Views/AISettingsView.swift

@@ -83,7 +83,7 @@ struct AISettingsView: View {
                 // GPT-5 Feature Section - Only show when OpenAI is selected for AI Image Analysis
                 if aiService.aiImageSearchProvider.rawValue.contains("OpenAI") {
                     Section(header: Text("OpenAI GPT-5 (Latest)"), 
-                           footer: Text("Enable GPT-5, GPT-5-mini, and GPT-5-nano models for OpenAI analysis. Standard Quality uses GPT-5, Fast Mode uses GPT-5-nano for ultra-fast analysis. GPT-5 takes longer to perform analysis but these are the latest models with significant improvements in health advisory accuracy. Fallback to GPT-4o if unavailable.")) {
+                           footer: Text("Enable GPT-5, GPT-5-mini, and GPT-5-nano models for OpenAI analysis. Standard Quality uses GPT-5, Fast Mode uses GPT-5-nano for ultra-fast analysis. GPT-5 takes longer to perform analysis but these are the latest models with some improvements in health advisory accuracy. Fallback to GPT-4o if unavailable.")) {
                         Toggle("Use GPT-5 Models", isOn: $useGPT5ForOpenAI)
                             .disabled(!foodSearchEnabled)
                             .onChange(of: useGPT5ForOpenAI) { _ in

Loop/Views/CarbEntryView.swift

@@ -47,22 +47,25 @@ struct CarbEntryView: View, HorizontalSizeClassOverride {
 
     var body: some View {
         if isNewEntry {
-            NavigationView {
-                let title = NSLocalizedString("carb-entry-title-add", value: "Add Carb Entry", comment: "The title of the view controller to create a new carb entry")
-                content
-                    .navigationBarTitle(title, displayMode: .inline)
-                    .toolbar {
-                        ToolbarItem(placement: .navigationBarLeading) {
-                            dismissButton
-                        }
-                        
-                        ToolbarItem(placement: .navigationBarTrailing) {
-                            continueButton
+            GeometryReader { geometry in
+                NavigationView {
+                    let title = NSLocalizedString("carb-entry-title-add", value: "Add Carb Entry", comment: "The title of the view controller to create a new carb entry")
+                    content
+                        .navigationBarTitle(title, displayMode: .inline)
+                        .toolbar {
+                            ToolbarItem(placement: .navigationBarLeading) {
+                                dismissButton
+                            }
+                            
+                            ToolbarItem(placement: .navigationBarTrailing) {
+                                continueButton
+                            }
                         }
-                    }
-                
+                    
+                }
+                .navigationViewStyle(StackNavigationViewStyle())
+                .frame(width: geometry.size.width)
             }
-            .navigationViewStyle(StackNavigationViewStyle())
         } else {
             content
                 .toolbar {
@@ -148,8 +151,32 @@ struct CarbEntryView: View, HorizontalSizeClassOverride {
             let absorptionTimeFocused: Binding<Bool> = Binding(get: { expandedRow == .absorptionTime }, set: { expandedRow = $0 ? .absorptionTime : nil })
 
             CarbQuantityRow(quantity: $viewModel.carbsQuantity, isFocused: amountConsumedFocused, title: NSLocalizedString("Amount Consumed", comment: "Label for carb quantity entry row on carb entry screen"), preferredCarbUnit: viewModel.preferredCarbUnit)
+
+            CardSectionDivider()
+            
+            DatePickerRow(date: $viewModel.time, isFocused: timerFocused, minimumDate: viewModel.minimumDate, maximumDate: viewModel.maximumDate)
+            
+            CardSectionDivider()
+            
+            FoodTypeRow(foodType: $viewModel.foodType, absorptionTime: $viewModel.absorptionTime, selectedDefaultAbsorptionTimeEmoji: $viewModel.selectedDefaultAbsorptionTimeEmoji, usesCustomFoodType: $viewModel.usesCustomFoodType, absorptionTimeWasEdited: $viewModel.absorptionTimeWasEdited, isFocused: foodTypeFocused, defaultAbsorptionTimes: viewModel.defaultAbsorptionTimes)
+            
+            CardSectionDivider()
+            
+            AIAbsorptionTimePickerRow(absorptionTime: $viewModel.absorptionTime, isFocused: absorptionTimeFocused, validDurationRange: viewModel.absorptionRimesRange, isAIGenerated: viewModel.absorptionTimeWasAIGenerated, showHowAbsorptionTimeWorks: $showHowAbsorptionTimeWorks)
+                .onReceive(viewModel.$absorptionTimeWasAIGenerated) { isAIGenerated in
+                    print("🎯 AIAbsorptionTimePickerRow received isAIGenerated: \(isAIGenerated)")
+                }
+                .padding(.bottom, 2)
+            
+            // Food Search enablement toggle (only show when Food Search is disabled)
+            if !isFoodSearchEnabled {
+                CardSectionDivider()
+                
+                FoodSearchEnableRow(isFoodSearchEnabled: $isFoodSearchEnabled)
+                    .padding(.bottom, 2)
+            }
 
-            // Food search section - moved up from bottom
+            // Food search section - moved after Absorption Time
             if isNewEntry && isFoodSearchEnabled {
                 CardSectionDivider()
 
@@ -213,11 +240,7 @@ struct CarbEntryView: View, HorizontalSizeClassOverride {
                     viewModel.setupFoodSearchObservers()
                 }
 
-                CardSectionDivider()
-            }
-            
-            // Food-related rows (only show if food search is enabled)
-            if isFoodSearchEnabled {
+                // Food-related rows (only show if food search is enabled)
                 // Always show servings row when food search is enabled
                 ServingsDisplayRow(
                     servings: $viewModel.numberOfServings, 
@@ -432,30 +455,6 @@ struct CarbEntryView: View, HorizontalSizeClassOverride {
                     .padding(.vertical, 8)
                 }
             } // End food search enabled section
-
-            CardSectionDivider()
-            
-            DatePickerRow(date: $viewModel.time, isFocused: timerFocused, minimumDate: viewModel.minimumDate, maximumDate: viewModel.maximumDate)
-            
-            CardSectionDivider()
-            
-            FoodTypeRow(foodType: $viewModel.foodType, absorptionTime: $viewModel.absorptionTime, selectedDefaultAbsorptionTimeEmoji: $viewModel.selectedDefaultAbsorptionTimeEmoji, usesCustomFoodType: $viewModel.usesCustomFoodType, absorptionTimeWasEdited: $viewModel.absorptionTimeWasEdited, isFocused: foodTypeFocused, defaultAbsorptionTimes: viewModel.defaultAbsorptionTimes)
-            
-            CardSectionDivider()
-            
-            AIAbsorptionTimePickerRow(absorptionTime: $viewModel.absorptionTime, isFocused: absorptionTimeFocused, validDurationRange: viewModel.absorptionRimesRange, isAIGenerated: viewModel.absorptionTimeWasAIGenerated, showHowAbsorptionTimeWorks: $showHowAbsorptionTimeWorks)
-                .onReceive(viewModel.$absorptionTimeWasAIGenerated) { isAIGenerated in
-                    print("🎯 AIAbsorptionTimePickerRow received isAIGenerated: \(isAIGenerated)")
-                }
-                .padding(.bottom, 2)
-            
-            // Food Search enablement toggle (only show when Food Search is disabled)
-            if !isFoodSearchEnabled {
-                CardSectionDivider()
-                
-                FoodSearchEnableRow(isFoodSearchEnabled: $isFoodSearchEnabled)
-                    .padding(.bottom, 2)
-            }
         }
         .padding(.vertical, 12)
         .padding(.horizontal, 12)