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/Settings/Views/SettingsView.swift

@@ -49,9 +49,6 @@ struct SettingsView: View {
             // Privacy
             privacySection
 
-            // Icon Generator
-            iconGeneratorSection
-
             // About
             aboutSection
 
@@ -59,6 +56,9 @@ struct SettingsView: View {
             resetSection
 
             #if DEBUG
+            // Icon Generator
+            iconGeneratorSection
+
             // Debug
             debugSection
 
@@ -377,6 +377,7 @@ struct SettingsView: View {
 
     // MARK: - Icon Generator Section
 
+    #if DEBUG
     private var iconGeneratorSection: some View {
         Section {
             NavigationLink {
@@ -404,6 +405,7 @@ struct SettingsView: View {
         }
         .listRowBackground(Theme.cardBackground(colorScheme))
     }
+    #endif
 
     // MARK: - Reset Section