Fix import paths and test issues

- Fixed test file import paths to point to correct Bloc file locations
- Fixed Bloc file import paths for models (../../../models/models.dart)
- Added explicit type annotations to resolve null safety warnings
- Fixed null safety issues in wishlist_bloc_test.dart
- All 70 tests now passing

bookshelf_flutter/lib/features/scanner/bloc/scanner_state.dart

@@ -0,0 +1,42 @@
+import 'package:equatable/equatable.dart';
+
+class ScannerState extends Equatable {
+  final bool isScanning;
+  final bool isProcessing;
+  final Map<String, dynamic>? detectedBookData;
+  final String? errorMessage;
+
+  const ScannerState({
+    this.isScanning = false,
+    this.isProcessing = false,
+    this.detectedBookData,
+    this.errorMessage,
+  });
+
+  factory ScannerState.initial() {
+    return const ScannerState();
+  }
+
+  ScannerState copyWith({
+    bool? isScanning,
+    bool? isProcessing,
+    Map<String, dynamic>? detectedBookData,
+    String? errorMessage,
+    bool clearDetectedBookData = false,
+  }) {
+    return ScannerState(
+      isScanning: isScanning ?? this.isScanning,
+      isProcessing: isProcessing ?? this.isProcessing,
+      detectedBookData: clearDetectedBookData ? null : (detectedBookData ?? this.detectedBookData),
+      errorMessage: errorMessage ?? this.errorMessage,
+    );
+  }
+
+  @override
+  List<Object?> get props => [
+        isScanning,
+        isProcessing,
+        detectedBookData,
+        errorMessage,
+      ];
+}