refactor: add Gap to bull_ui and drop gap dependency

lib/core/screens/app_init_error_screen.dart

@@ -8,7 +8,7 @@ import 'package:bb_mobile/core/widgets/snackbar_utils.dart';
 import 'package:bb_mobile/generated/l10n/localization.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_svg/flutter_svg.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 import 'package:share_plus/share_plus.dart';
 import 'package:url_launcher/url_launcher.dart';
 

lib/core/screens/send_confirm_screen.dart

@@ -10,7 +10,7 @@ import 'package:bb_mobile/features/bitcoin_price/ui/currency_text.dart';
 import 'package:bb_mobile/generated/flutter_gen/assets.gen.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 enum SendType { send, swap }
 

lib/core/widgets/address_viewer.dart

@@ -9,7 +9,7 @@ import 'package:bb_mobile/core/widgets/viewer_action_button.dart';
 import 'package:bb_mobile/locator.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 import 'package:satoshifier/satoshifier.dart';
 import 'package:url_launcher/url_launcher.dart';
 

lib/core/widgets/advanced_options_bottom_sheet.dart

@@ -6,7 +6,7 @@ import 'package:bb_mobile/features/send/presentation/bloc/send_cubit.dart';
 import 'package:bb_mobile/features/send/ui/widgets/coin_selection_bottom_sheet.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 import 'package:go_router/go_router.dart';
 
 class AdvancedOptionsBottomSheet extends StatelessWidget {

lib/core/widgets/backup_success_screen.dart

@@ -6,7 +6,7 @@ import 'package:bb_mobile/features/wallet/ui/wallet_router.dart';
 import 'package:bb_mobile/generated/flutter_gen/assets.gen.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 import 'package:gif/gif.dart';
 import 'package:go_router/go_router.dart';
 

lib/core/widgets/bottom_sheet/disclosure_bottom_sheet.dart

@@ -3,7 +3,7 @@ import 'package:bb_mobile/core/utils/build_context_x.dart';
 import 'package:bb_mobile/core/widgets/bottom_sheet/x.dart';
 import 'package:bb_mobile/core/widgets/text/text.dart';
 import 'package:flutter/material.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 class DisclosureLink extends StatelessWidget {
   const DisclosureLink({

lib/core/widgets/bottom_sheet/instructions_bottom_sheet.dart

@@ -2,7 +2,7 @@ import 'package:bb_mobile/core/themes/app_theme.dart';
 import 'package:bb_mobile/core/widgets/bottom_sheet/x.dart';
 import 'package:bb_mobile/core/widgets/text/text.dart';
 import 'package:flutter/material.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 class InstructionsBottomSheet extends StatelessWidget {
   final String title;

lib/core/widgets/bottom_sheet/picker_sheet.dart

@@ -1,6 +1,6 @@
 import 'package:bb_mobile/core/themes/app_theme.dart';
 import 'package:flutter/material.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 /// Generic single-selection bottom-sheet picker.
 ///

lib/core/widgets/buttons/button.dart

@@ -1,7 +1,7 @@
 import 'package:bb_mobile/core/themes/app_theme.dart';
 import 'package:bb_mobile/core/widgets/text/text.dart';
 import 'package:flutter/material.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 enum ButtonSize { small, large }
 

lib/core/widgets/cards/action_card.dart

@@ -13,7 +13,7 @@ import 'package:bb_mobile/features/swap/ui/swap_router.dart';
 import 'package:bb_mobile/generated/flutter_gen/assets.gen.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 import 'package:go_router/go_router.dart';
 
 enum _ButtonPosition { first, last, middle }

lib/core/widgets/cards/autoswap_warning_card.dart

@@ -2,7 +2,7 @@ import 'package:bb_mobile/core/themes/app_theme.dart';
 import 'package:bb_mobile/core/utils/build_context_x.dart';
 import 'package:bb_mobile/core/widgets/text/text.dart';
 import 'package:flutter/material.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 class AutoSwapWarningCard extends StatelessWidget {
   const AutoSwapWarningCard({

lib/core/widgets/cards/backup_card.dart

@@ -3,7 +3,7 @@ import 'package:bb_mobile/core/utils/build_context_x.dart';
 import 'package:bb_mobile/core/widgets/text/text.dart';
 import 'package:bb_mobile/generated/flutter_gen/assets.gen.dart';
 import 'package:flutter/material.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 class BackupCard extends StatelessWidget {
   const BackupCard({super.key, required this.onTap});

lib/core/widgets/cards/backup_option_card.dart

@@ -2,7 +2,7 @@ import 'package:bb_mobile/core/themes/app_theme.dart';
 import 'package:bb_mobile/core/widgets/cards/tag_card.dart';
 import 'package:bb_mobile/core/widgets/text/text.dart';
 import 'package:flutter/material.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 class BackupOptionCard extends StatelessWidget {
   final Widget icon;

lib/core/widgets/cards/balance_card.dart

@@ -2,7 +2,7 @@ import 'package:bb_mobile/core/exchange/domain/entity/user_summary.dart';
 import 'package:bb_mobile/core/themes/app_theme.dart';
 import 'package:bb_mobile/core/widgets/text/text.dart';
 import 'package:flutter/material.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 class BalanceCard extends StatelessWidget {
   const BalanceCard({super.key, required this.balance, required this.onTap});

lib/core/widgets/cards/consolidation_required_card.dart

@@ -1,7 +1,7 @@
 import 'package:bb_mobile/core/themes/app_theme.dart';
 import 'package:bb_mobile/core/widgets/text/text.dart';
 import 'package:flutter/material.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 class ConsolidationRequiredCard extends StatelessWidget {
   const ConsolidationRequiredCard({

lib/core/widgets/cards/info_card.dart

@@ -1,6 +1,6 @@
 import 'package:bb_mobile/core/themes/app_theme.dart';
 import 'package:flutter/material.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 class InfoCard extends StatelessWidget {
   const InfoCard({

lib/core/widgets/cards/provider_cart.dart

@@ -4,7 +4,7 @@ import 'package:bb_mobile/core/widgets/cards/tag_card.dart';
 import 'package:bb_mobile/core/widgets/text/text.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 class ProviderCard extends StatefulWidget {
   final VaultProvider provider;

lib/core/widgets/cards/wallet_card.dart

@@ -3,7 +3,7 @@ import 'package:bb_mobile/core/widgets/loading/fading_linear_progress.dart';
 import 'package:bb_mobile/core/widgets/text/text.dart';
 import 'package:bb_mobile/features/bitcoin_price/ui/currency_text.dart';
 import 'package:flutter/material.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 class WalletCard extends StatelessWidget {
   const WalletCard({

lib/core/widgets/coin_selection_bottom_sheet.dart

@@ -8,7 +8,7 @@ import 'package:bb_mobile/core/wallet/domain/entities/wallet_utxo.dart';
 import 'package:bb_mobile/core/widgets/buttons/button.dart';
 import 'package:bb_mobile/core/widgets/text/text.dart';
 import 'package:flutter/material.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 import 'package:go_router/go_router.dart';
 
 class CommonCoinSelectionBottomSheet extends StatefulWidget {

lib/core/widgets/dropdown/selectable_list.dart

@@ -2,7 +2,7 @@ import 'package:bb_mobile/core/themes/app_theme.dart';
 import 'package:bb_mobile/core/widgets/loading/loading_line_content.dart';
 import 'package:bb_mobile/core/widgets/text/text.dart';
 import 'package:flutter/material.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 class SelectableListItem {
   final String? iconPath;

lib/core/widgets/fees/custom_fee_list_item.dart

@@ -11,7 +11,7 @@ import 'package:bb_mobile/core/widgets/loading/loading_line_content.dart';
 import 'package:bb_mobile/core/widgets/text/text.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 /// Reusable "Custom Fee" tile used inside the fee-selection modal of both
 /// Send and Swap, and as the inline custom-rate tile in RBF. Owns the

lib/core/widgets/fees/fee_options_modal.dart

@@ -10,7 +10,7 @@ import 'package:bb_mobile/core/widgets/fees/fee_modal_controller.dart';
 import 'package:bb_mobile/core/widgets/inputs/bb_keyboard_actions.dart';
 import 'package:bb_mobile/core/widgets/text/text.dart';
 import 'package:flutter/material.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 /// Shared fee-selection bottom sheet — mounted by both the Bitcoin send
 /// confirm screen and the swap confirm page. The widget depends only on

lib/core/widgets/inputs/copy_input.dart

@@ -5,7 +5,7 @@ import 'package:bb_mobile/core/widgets/loading/loading_line_content.dart';
 import 'package:bb_mobile/core/widgets/snackbar_utils.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 class CopyInput extends StatelessWidget {
   const CopyInput({

lib/core/widgets/inputs/paste_input.dart

@@ -2,7 +2,7 @@ import 'package:bb_mobile/core/themes/app_theme.dart';
 import 'package:bb_mobile/core/widgets/text/text.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 class PasteInput extends StatelessWidget {
   const PasteInput({

lib/core/widgets/invoice_viewer.dart

@@ -6,7 +6,7 @@ import 'package:bb_mobile/core/widgets/text/text.dart';
 import 'package:bb_mobile/core/widgets/viewer_action_button.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 /// Displays a Lightning invoice truncated to fit the available width.
 ///

lib/core/widgets/lists/transactions_by_day_list.dart

@@ -5,7 +5,7 @@ import 'package:bb_mobile/features/transactions/domain/entities/transaction.dart
 import 'package:bb_mobile/features/transactions/ui/widgets/ongoing_swaps.dart';
 import 'package:bb_mobile/features/transactions/ui/widgets/tx_list_item.dart';
 import 'package:flutter/material.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 import 'package:intl/intl.dart';
 
 class TransactionsByDayList extends StatelessWidget {

lib/core/widgets/loading/progress_screen.dart

@@ -2,7 +2,7 @@ import 'package:bb_mobile/core/themes/app_theme.dart';
 import 'package:bb_mobile/core/widgets/text/text.dart';
 import 'package:bb_mobile/generated/flutter_gen/assets.gen.dart' show Assets;
 import 'package:flutter/material.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 import 'package:gif/gif.dart' show Autostart, Gif;
 
 class ProgressScreen extends StatelessWidget {

lib/core/widgets/loading/status_screen.dart

@@ -4,7 +4,7 @@ import 'package:bb_mobile/core/widgets/buttons/button.dart';
 import 'package:bb_mobile/core/widgets/loading/progress_screen.dart';
 import 'package:bb_mobile/core/widgets/template/screen_template.dart';
 import 'package:flutter/material.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 /// A screen that handles three states: loading, success, and error
 class StatusScreen extends StatelessWidget {

lib/core/widgets/log_viewer_widget.dart

@@ -9,7 +9,7 @@ import 'package:bb_mobile/core/widgets/text/text.dart';
 import 'package:bb_mobile/features/wallet/ui/wallet_router.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 import 'package:go_router/go_router.dart';
 
 class LogsViewerWidget extends StatefulWidget {

lib/core/widgets/mnemonic_widget.dart

@@ -5,7 +5,7 @@ import 'package:bb_mobile/features/labels/ui/labeled_text_input.dart';
 import 'package:bb_mobile/core/widgets/text/text.dart';
 import 'package:bip39_mnemonic/bip39_mnemonic.dart' as bip39;
 import 'package:flutter/material.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 typedef Mnemonic = ({
   String label,

lib/core/widgets/navbar/top_bar.dart

@@ -2,7 +2,7 @@ import 'package:bb_mobile/core/themes/app_theme.dart';
 import 'package:bb_mobile/core/widgets/text/text.dart';
 import 'package:bb_mobile/generated/flutter_gen/assets.gen.dart';
 import 'package:flutter/material.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 class TopBar extends StatelessWidget {
   const TopBar({

lib/core/widgets/price_input/balance_row.dart

@@ -2,7 +2,7 @@ import 'package:bb_mobile/core/themes/app_theme.dart';
 import 'package:bb_mobile/core/widgets/switch/bb_switch.dart';
 import 'package:bb_mobile/core/widgets/text/text.dart';
 import 'package:flutter/material.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 class BalanceRow extends StatelessWidget {
   final String title;

lib/core/widgets/price_input/price_input.dart

@@ -4,7 +4,7 @@ import 'package:bb_mobile/core/utils/constants.dart';
 import 'package:bb_mobile/core/widgets/bottom_sheet/x.dart';
 import 'package:bb_mobile/core/widgets/inputs/amount_input_formatter.dart';
 import 'package:flutter/material.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 class PriceInput extends StatelessWidget {
   const PriceInput({

lib/core/widgets/selectors/recoverbull_vault_provider_selector.dart

@@ -3,7 +3,7 @@ import 'package:bb_mobile/core/themes/app_theme.dart';
 import 'package:bb_mobile/core/widgets/cards/provider_cart.dart';
 import 'package:bb_mobile/core/widgets/text/text.dart';
 import 'package:flutter/material.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 class RecoverbullVaultProviderSelector extends StatelessWidget {
   final void Function(VaultProvider provider) onProviderSelected;

lib/core/widgets/share_logs_widget.dart

@@ -4,7 +4,7 @@ import 'package:bb_mobile/core/utils/logger.dart';
 import 'package:bb_mobile/core/widgets/share_logs_bottom_sheet.dart';
 import 'package:bb_mobile/core/widgets/snackbar_utils.dart';
 import 'package:flutter/material.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 class ShareLogsWidget extends StatelessWidget {
   const ShareLogsWidget({super.key});

lib/core/widgets/tab_menu_vertical_button.dart

@@ -1,7 +1,7 @@
 import 'package:bb_mobile/core/themes/app_theme.dart';
 import 'package:bb_mobile/core/widgets/text/text.dart';
 import 'package:flutter/material.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 class TabMenuVerticalButton extends StatelessWidget {
   final Widget? icon;

lib/core/widgets/tables/details_table_item.dart

@@ -3,7 +3,7 @@ import 'package:bb_mobile/core/widgets/loading/loading_line_content.dart';
 import 'package:bb_mobile/core/widgets/snackbar_utils.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 class DetailsTableItem extends StatefulWidget {
   const DetailsTableItem({

lib/core/widgets/transaction_viewer.dart

@@ -8,7 +8,7 @@ import 'package:bb_mobile/core/widgets/viewer_action_button.dart';
 import 'package:bb_mobile/locator.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 import 'package:url_launcher/url_launcher.dart';
 
 enum _TransactionNetwork { bitcoin, liquid, ark }

lib/core/widgets/viewer_action_button.dart

@@ -1,7 +1,7 @@
 import 'package:bb_mobile/core/themes/app_theme.dart';
 import 'package:bb_mobile/core/widgets/text/text.dart';
 import 'package:flutter/material.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 /// Standard action row used inside address / transaction / invoice detail
 /// dialogs (Copy, Copy link, Open in explorer).

lib/core/widgets/warning_bottom_sheet.dart

@@ -3,7 +3,7 @@ import 'package:bb_mobile/core/widgets/bottom_sheet/x.dart';
 import 'package:bb_mobile/core/widgets/buttons/button.dart';
 import 'package:bb_mobile/core/widgets/text/text.dart';
 import 'package:flutter/material.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 import 'package:go_router/go_router.dart';
 
 class WarningBottomSheet extends StatelessWidget {

lib/features/address_view/ui/screens/addresses_screen.dart

@@ -7,7 +7,7 @@ import 'package:bb_mobile/features/address_view/presentation/address_view_failur
 import 'package:bb_mobile/features/settings/ui/widgets/address_card.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 
 class AddressesScreen extends StatefulWidget {
   const AddressesScreen({super.key, required this.walletId});

lib/features/app_startup/ui/app_startup_widget.dart

@@ -10,7 +10,7 @@ import 'package:bb_mobile/features/onboarding/ui/screens/onboarding_splash.dart'
 import 'package:bb_mobile/router.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 import 'package:url_launcher/url_launcher.dart';
 
 class AppStartupWidget extends StatefulWidget {

lib/features/app_unlock/ui/pin_code_unlock_screen.dart

@@ -11,7 +11,7 @@ import 'package:bb_mobile/features/wallet/ui/wallet_router.dart';
 import 'package:bb_mobile/locator.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 import 'package:go_router/go_router.dart';
 
 class PinCodeUnlockScreen extends StatelessWidget {

lib/features/ark/ui/ark_about_page.dart

@@ -8,7 +8,7 @@ import 'package:bb_mobile/core/widgets/snackbar_utils.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
-import 'package:gap/gap.dart';
+import 'package:bull_ui/bull_ui.dart' show Gap;
 import 'package:go_router/go_router.dart';
 
 class ArkAboutPage extends StatelessWidget {