improve tab bar auto hide; add autohide setting

app/lib/features/user/data/models/general_settings.dart

@@ -57,8 +57,8 @@ class GeneralSettings with FastEquatable {
   final bool enableLocalAiFeatures;
   final TabType defaultCreateTabType;
   final TabType defaultIntentTabType;
-
   final bool proxyPrivateTabsTor;
+  final bool autoHideTabBar;
 
   GeneralSettings({
     required this.themeMode,
@@ -73,6 +73,7 @@ class GeneralSettings with FastEquatable {
     required this.enableLocalAiFeatures,
     required this.defaultCreateTabType,
     required this.defaultIntentTabType,
+    required this.autoHideTabBar,
   });
 
   GeneralSettings.withDefaults({
@@ -88,6 +89,7 @@ class GeneralSettings with FastEquatable {
     bool? enableLocalAiFeatures,
     TabType? defaultCreateTabType,
     TabType? defaultIntentTabType,
+    bool? autoHideTabBar,
   }) : themeMode = themeMode ?? ThemeMode.dark,
        enableReadability = enableReadability ?? true,
        enforceReadability = enforceReadability ?? false,
@@ -99,7 +101,8 @@ class GeneralSettings with FastEquatable {
        showExtensionShortcut = showExtensionShortcut ?? false,
        enableLocalAiFeatures = enableLocalAiFeatures ?? true,
        defaultCreateTabType = defaultCreateTabType ?? TabType.regular,
-       defaultIntentTabType = defaultIntentTabType ?? TabType.regular;
+       defaultIntentTabType = defaultIntentTabType ?? TabType.regular,
+       autoHideTabBar = autoHideTabBar ?? true;
 
   factory GeneralSettings.fromJson(Map<String, dynamic> json) =>
       _$GeneralSettingsFromJson(json);
@@ -120,5 +123,6 @@ class GeneralSettings with FastEquatable {
     defaultCreateTabType,
     defaultIntentTabType,
     proxyPrivateTabsTor,
+    autoHideTabBar,
   ];
 }

app/lib/features/user/data/models/general_settings.g.dart

@@ -35,6 +35,8 @@ abstract class _$GeneralSettingsCWProxy {
 
   GeneralSettings defaultIntentTabType(TabType defaultIntentTabType);
 
+  GeneralSettings autoHideTabBar(bool autoHideTabBar);
+
   /// This function **does support** nullification of nullable fields. All `null` values passed to `non-nullable` fields will be ignored. You can also use `GeneralSettings(...).copyWith.fieldName(...)` to override fields one at a time with nullification support.
   ///
   /// Usage
@@ -54,6 +56,7 @@ abstract class _$GeneralSettingsCWProxy {
     bool enableLocalAiFeatures,
     TabType defaultCreateTabType,
     TabType defaultIntentTabType,
+    bool autoHideTabBar,
   });
 }
 
@@ -112,6 +115,10 @@ class _$GeneralSettingsCWProxyImpl implements _$GeneralSettingsCWProxy {
   GeneralSettings defaultIntentTabType(TabType defaultIntentTabType) =>
       this(defaultIntentTabType: defaultIntentTabType);
 
+  @override
+  GeneralSettings autoHideTabBar(bool autoHideTabBar) =>
+      this(autoHideTabBar: autoHideTabBar);
+
   @override
   /// This function **does support** nullification of nullable fields. All `null` values passed to `non-nullable` fields will be ignored. You can also use `GeneralSettings(...).copyWith.fieldName(...)` to override fields one at a time with nullification support.
   ///
@@ -132,6 +139,7 @@ class _$GeneralSettingsCWProxyImpl implements _$GeneralSettingsCWProxy {
     Object? enableLocalAiFeatures = const $CopyWithPlaceholder(),
     Object? defaultCreateTabType = const $CopyWithPlaceholder(),
     Object? defaultIntentTabType = const $CopyWithPlaceholder(),
+    Object? autoHideTabBar = const $CopyWithPlaceholder(),
   }) {
     return GeneralSettings(
       themeMode: themeMode == const $CopyWithPlaceholder()
@@ -188,6 +196,10 @@ class _$GeneralSettingsCWProxyImpl implements _$GeneralSettingsCWProxy {
           ? _value.defaultIntentTabType
           // ignore: cast_nullable_to_non_nullable
           : defaultIntentTabType as TabType,
+      autoHideTabBar: autoHideTabBar == const $CopyWithPlaceholder()
+          ? _value.autoHideTabBar
+          // ignore: cast_nullable_to_non_nullable
+          : autoHideTabBar as bool,
     );
   }
 }
@@ -228,6 +240,7 @@ GeneralSettings _$GeneralSettingsFromJson(Map<String, dynamic> json) =>
         _$TabTypeEnumMap,
         json['defaultIntentTabType'],
       ),
+      autoHideTabBar: json['autoHideTabBar'] as bool?,
     );
 
 Map<String, dynamic> _$GeneralSettingsToJson(GeneralSettings instance) =>
@@ -248,6 +261,7 @@ Map<String, dynamic> _$GeneralSettingsToJson(GeneralSettings instance) =>
       'defaultCreateTabType': _$TabTypeEnumMap[instance.defaultCreateTabType]!,
       'defaultIntentTabType': _$TabTypeEnumMap[instance.defaultIntentTabType]!,
       'proxyPrivateTabsTor': instance.proxyPrivateTabsTor,
+      'autoHideTabBar': instance.autoHideTabBar,
     };
 
 const _$ThemeModeEnumMap = {