fix: hide Creative Tools in release builds and improve Add Item keyboard behavior

Gate Icon Generator section behind #if DEBUG and group it with other debug
sections at the bottom of Settings. Remove auto-focus on description field,
dismiss keyboard on return key and on scroll.

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

SportsTime/Features/Trip/Views/AddItem/QuickAddItemSheet.swift

@@ -61,7 +61,7 @@ struct QuickAddItemSheet: View {
                 .padding(.top, Theme.Spacing.md)
                 .padding(.bottom, Theme.Spacing.xxl)
             }
-            .scrollDismissesKeyboard(.interactively)
+            .scrollDismissesKeyboard(.immediately)
             .background(Theme.backgroundGradient(colorScheme))
             .navigationTitle(isEditing ? "Edit Item" : "Add to Day \(day)")
             .navigationBarTitleDisplayMode(.inline)
@@ -102,10 +102,6 @@ struct QuickAddItemSheet: View {
             }
             .onAppear {
                 loadExistingItem()
-                // Focus text field after a brief delay
-                DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) {
-                    isTitleFocused = true
-                }
             }
             .task {
                 await loadNearbyPOIs()
@@ -126,6 +122,8 @@ struct QuickAddItemSheet: View {
                     .font(.body)
                     .lineLimit(1...3)
                     .focused($isTitleFocused)
+                    .submitLabel(.done)
+                    .onSubmit { isTitleFocused = false }
                     .padding(Theme.Spacing.md)
                     .background(inputBackground)
                     .clipShape(RoundedRectangle(cornerRadius: Theme.CornerRadius.medium))