refactor: remove unused import

integration_test/export_flow_test.dart

@@ -6,7 +6,7 @@ import 'package:integration_test/integration_test.dart';
 import 'package:image/image.dart' as img;
 
 import 'package:pdf_signature/data/services/export_service.dart';
-import 'package:pdf_signature/data/services/export_providers.dart';
+
 import 'package:pdf_signature/data/repositories/signature_asset_repository.dart';
 import 'package:pdf_signature/data/repositories/signature_card_repository.dart';
 import 'package:pdf_signature/data/repositories/document_repository.dart';

lib/data/repositories/signature_card_repository.dart

@@ -1,6 +1,4 @@
-import 'dart:typed_data';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:image/image.dart' as img;
 import '../../domain/models/model.dart';
 
 class SignatureCardStateNotifier extends StateNotifier<List<SignatureCard>> {

lib/ui/features/pdf/widgets/pdf_mock_continuous_list.dart

@@ -3,7 +3,6 @@ import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:pdf_signature/l10n/app_localizations.dart';
 
-import '../../../../data/services/export_providers.dart';
 import 'pdf_page_overlays.dart';
 
 /// Mocked continuous viewer for tests or platforms without real viewer.

lib/ui/features/pdf/widgets/pdf_page_area.dart

@@ -3,7 +3,6 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:pdf_signature/l10n/app_localizations.dart';
 import 'package:pdfrx/pdfrx.dart';
 
-import '../../../../data/services/export_providers.dart';
 import 'package:pdf_signature/data/repositories/signature_card_repository.dart';
 import 'package:pdf_signature/data/repositories/document_repository.dart';
 import '../../signature/widgets/signature_drag_data.dart';

lib/ui/features/pdf/widgets/pdf_pages_overview.dart

@@ -2,7 +2,6 @@ import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:pdfrx/pdfrx.dart';
 
-import '../../../../data/services/export_providers.dart';
 import 'package:pdf_signature/data/repositories/document_repository.dart';
 
 class PdfPagesOverview extends ConsumerWidget {

lib/ui/features/pdf/widgets/pdf_screen.dart

@@ -10,7 +10,6 @@ import 'package:printing/printing.dart' as printing;
 import 'package:pdfrx/pdfrx.dart';
 import 'package:multi_split_view/multi_split_view.dart';
 
-import '../../../../data/services/export_providers.dart';
 import 'package:image/image.dart' as img;
 import 'package:pdf_signature/data/repositories/signature_card_repository.dart';
 import 'package:pdf_signature/data/repositories/document_repository.dart';
@@ -146,9 +145,9 @@ class _PdfSignatureHomePageState extends ConsumerState<PdfSignatureHomePage> {
       final exporter = ref.read(exportServiceProvider);
 
       // get DPI from preferences
-      final targetDpi = ref.read(preferencesRepositoryProvider).select(
+      final targetDpi = ref
-            (p) => p.exportDpi,
+          .read(preferencesRepositoryProvider)
-      );
+          .select((p) => p.exportDpi);
       final useMock = ref.read(useMockViewerProvider);
       bool ok = false;
       String? savedPath;

lib/ui/features/pdf/widgets/signature_drawer.dart

@@ -4,7 +4,6 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:pdf_signature/l10n/app_localizations.dart';
 import 'package:pdf_signature/domain/models/model.dart' as model;
 
-import '../../../../data/services/export_providers.dart';
 import 'package:pdf_signature/data/repositories/signature_card_repository.dart';
 import 'package:pdf_signature/data/repositories/signature_asset_repository.dart';
 import 'image_editor_dialog.dart';

lib/ui/features/pdf/widgets/signatures_sidebar.dart

@@ -3,7 +3,6 @@ import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:pdf_signature/l10n/app_localizations.dart';
 
-import '../../../../data/services/export_providers.dart';
 import 'signature_drawer.dart';
 
 class SignaturesSidebar extends ConsumerWidget {

test/features/step/a_drawn_signature_exists_in_the_canvas.dart

@@ -1,6 +1,5 @@
 import 'package:flutter_test/flutter_test.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:pdf_signature/data/repositories/signature_card_repository.dart';
 import '_world.dart';
 
 /// Usage: a drawn signature exists in the canvas

test/features/step/adjusting_one_instance_does_not_affect_the_others.dart

@@ -1,7 +1,6 @@
 import 'package:flutter_test/flutter_test.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:pdf_signature/data/repositories/document_repository.dart';
-import 'package:pdf_signature/domain/models/model.dart';
 import '_world.dart';
 
 /// Usage: adjusting one instance does not affect the others

test/features/step/dragging_or_resizing_one_does_not_change_the_other.dart

@@ -2,7 +2,6 @@ import 'dart:ui';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:pdf_signature/data/repositories/document_repository.dart';
-import 'package:pdf_signature/domain/models/model.dart';
 import '_world.dart';
 
 /// Usage: dragging or resizing one does not change the other

test/features/step/identical_signature_placements_appear_in_each_location.dart

@@ -1,5 +1,4 @@
 import 'package:flutter_test/flutter_test.dart';
-import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:pdf_signature/data/repositories/document_repository.dart';
 import '_world.dart';
 

test/features/step/multiple_strokes_were_drawn.dart

@@ -1,6 +1,5 @@
 import 'package:flutter_test/flutter_test.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:pdf_signature/data/repositories/signature_card_repository.dart';
 import '_world.dart';
 
 /// Usage: multiple strokes were drawn

test/features/step/nearwhite_background_becomes_transparent_in_the_preview.dart

@@ -2,7 +2,6 @@ import 'dart:typed_data';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:image/image.dart' as img;
-import 'package:pdf_signature/data/repositories/signature_card_repository.dart';
 import '_world.dart';
 
 /// Usage: near-white background becomes transparent in the preview

test/features/step/the_last_stroke_is_removed.dart

@@ -1,6 +1,5 @@
 import 'package:flutter_test/flutter_test.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:pdf_signature/data/repositories/signature_card_repository.dart';
 import '_world.dart';
 
 /// Usage: the last stroke is removed

test/features/step/the_preview_updates_immediately.dart

@@ -1,6 +1,5 @@
 import 'package:flutter_test/flutter_test.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:pdf_signature/data/repositories/signature_card_repository.dart';
 import '_world.dart';
 
 /// Usage: the preview updates immediately

test/features/step/the_user_attempts_to_save.dart

@@ -1,6 +1,5 @@
 import 'package:flutter_test/flutter_test.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:pdf_signature/data/repositories/signature_card_repository.dart';
 import 'package:pdf_signature/data/repositories/document_repository.dart';
 import '_world.dart';
 

test/features/step/the_user_can_apply_or_reset_adjustments.dart

@@ -1,6 +1,5 @@
 import 'package:flutter_test/flutter_test.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:pdf_signature/data/repositories/signature_card_repository.dart';
 import '_world.dart';
 
 /// Usage: the user can apply or reset adjustments

test/features/step/the_user_changes_contrast_and_brightness_controls.dart

@@ -1,6 +1,5 @@
 import 'package:flutter_test/flutter_test.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:pdf_signature/data/repositories/signature_card_repository.dart';
 import '_world.dart';
 
 /// Usage: the user changes contrast and brightness controls

test/features/step/the_user_chooses_undo.dart

@@ -1,6 +1,5 @@
 import 'package:flutter_test/flutter_test.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:pdf_signature/data/repositories/signature_card_repository.dart';
 import '_world.dart';
 
 /// Usage: the user chooses undo

test/features/step/the_user_clears_the_canvas.dart

@@ -1,6 +1,5 @@
 import 'package:flutter_test/flutter_test.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:pdf_signature/data/repositories/signature_card_repository.dart';
 import '_world.dart';
 
 /// Usage: the user clears the canvas

test/features/step/the_user_drags_it_on_the_page_of_the_document_to_place_signature_placements_in_multiple_locations_in_the_document.dart

@@ -1,7 +1,6 @@
 import 'dart:typed_data';
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
-import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:pdf_signature/data/repositories/document_repository.dart';
 import 'package:pdf_signature/data/repositories/signature_asset_repository.dart';
 import 'package:pdf_signature/domain/models/model.dart';

test/features/step/the_user_draws_strokes_and_confirms.dart

@@ -1,7 +1,6 @@
 import 'dart:typed_data';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:pdf_signature/data/repositories/signature_card_repository.dart';
 import '_world.dart';
 
 /// Usage: the user draws strokes and confirms

test/features/step/the_user_enables_background_removal.dart

@@ -1,6 +1,5 @@
 import 'package:flutter_test/flutter_test.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:pdf_signature/data/repositories/signature_card_repository.dart';
 import '_world.dart';
 
 /// Usage: the user enables background removal

test/features/step/the_user_is_notified_of_the_issue.dart

@@ -1,6 +1,5 @@
 import 'package:flutter_test/flutter_test.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:pdf_signature/data/repositories/signature_card_repository.dart';
 import '_world.dart';
 
 /// Usage: the user is notified of the issue

test/features/step/the_user_places_a_signature_placement_from_asset_on_page.dart

@@ -4,7 +4,6 @@ import 'package:flutter_test/flutter_test.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:pdf_signature/data/repositories/document_repository.dart';
 import 'package:pdf_signature/data/repositories/signature_asset_repository.dart';
-import 'package:pdf_signature/domain/models/model.dart';
 import '_world.dart';
 
 /// Usage: the user places a signature placement from asset <second_asset> on page <second_page>

test/features/step/the_user_savesexports_the_document.dart

@@ -1,7 +1,6 @@
 import 'dart:typed_data';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:pdf_signature/data/repositories/signature_card_repository.dart';
 import 'package:pdf_signature/data/repositories/document_repository.dart';
 import '_world.dart';
 

test/widget/export_flow_test.dart

@@ -3,7 +3,7 @@ import 'package:flutter_test/flutter_test.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 
 import 'package:pdf_signature/data/services/export_service.dart';
-import 'package:pdf_signature/data/services/export_providers.dart';
+
 import 'package:pdf_signature/data/repositories/signature_card_repository.dart';
 import 'package:pdf_signature/data/repositories/document_repository.dart';
 import 'package:pdf_signature/ui/features/pdf/widgets/pdf_screen.dart';

test/widget/helpers.dart

@@ -7,7 +7,7 @@ import 'dart:typed_data';
 import 'package:pdf_signature/ui/features/pdf/widgets/pdf_screen.dart';
 import 'package:pdf_signature/data/repositories/signature_card_repository.dart';
 import 'package:pdf_signature/data/repositories/document_repository.dart';
-import 'package:pdf_signature/data/services/export_providers.dart';
+
 import 'package:pdf_signature/l10n/app_localizations.dart';
 // preferences_providers.dart no longer exports pageViewModeProvider
 

test/widget/pdf_navigation_widget_test.dart

@@ -5,7 +5,7 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:pdf_signature/ui/features/pdf/widgets/pdf_screen.dart';
 import 'package:pdf_signature/data/repositories/document_repository.dart';
 import 'package:pdf_signature/domain/models/model.dart';
-import 'package:pdf_signature/data/services/export_providers.dart';
+
 import 'package:pdf_signature/l10n/app_localizations.dart';
 
 class _TestPdfController extends DocumentStateNotifier {

test/widget/pdf_page_area_early_jump_test.dart

@@ -4,7 +4,7 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 
 import 'package:pdf_signature/ui/features/pdf/widgets/pdf_page_area.dart';
 import 'package:pdf_signature/data/repositories/document_repository.dart';
-import 'package:pdf_signature/data/services/export_providers.dart';
+
 import 'package:pdf_signature/l10n/app_localizations.dart';
 import 'package:pdf_signature/domain/models/model.dart';
 

test/widget/pdf_page_area_jump_test.dart

@@ -4,7 +4,7 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 
 import 'package:pdf_signature/ui/features/pdf/widgets/pdf_page_area.dart';
 import 'package:pdf_signature/data/repositories/document_repository.dart';
-import 'package:pdf_signature/data/services/export_providers.dart';
+
 import 'package:pdf_signature/l10n/app_localizations.dart';
 import 'package:pdf_signature/domain/models/model.dart';
 

test/widget/pdf_page_area_test.dart

@@ -4,7 +4,6 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 
 import 'package:pdf_signature/ui/features/pdf/widgets/pdf_page_area.dart';
 import 'package:pdf_signature/data/repositories/document_repository.dart';
-import 'package:pdf_signature/data/services/export_providers.dart';
 
 void main() {
   testWidgets('placed signature stays attached on zoom (mock continuous)', (