feat: Add clone routine functionality

workout-logger/lib/screens/routines_screen.dart

@@ -259,6 +259,14 @@ class _RoutineCard extends StatelessWidget {
                 );
               },
             ),
+            ListTile(
+              leading: const Icon(Icons.copy),
+              title: const Text('Clone Routine'),
+              onTap: () {
+                Navigator.pop(context);
+                _showCloneDialog(context);
+              },
+            ),
             ListTile(
               leading: const Icon(Icons.delete, color: AppTheme.error),
               title: const Text(
@@ -276,6 +284,42 @@ class _RoutineCard extends StatelessWidget {
     );
   }
 
+  void _showCloneDialog(BuildContext context) {
+    final TextEditingController nameController = TextEditingController();
+
+    showDialog(
+      context: context,
+      builder: (context) => AlertDialog(
+        title: const Text('Clone Routine'),
+        content: TextField(
+          controller: nameController,
+          autofocus: true,
+          decoration: InputDecoration(
+            hintText: routine.name,
+            labelText: 'New Routine Name',
+          ),
+          textCapitalization: TextCapitalization.words,
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(context),
+            child: const Text('Cancel'),
+          ),
+          FilledButton(
+            onPressed: () {
+              final newName = nameController.text.trim().isEmpty
+                  ? routine.name
+                  : nameController.text.trim();
+              provider.createRoutine(newName, routine.exerciseIds);
+              Navigator.pop(context);
+            },
+            child: const Text('Clone'),
+          ),
+        ],
+      ),
+    );
+  }
+
   void _confirmDelete(BuildContext context) {
     showDialog(
       context: context,

workout-logger/test/screens/routines_screen_test.dart

@@ -0,0 +1,109 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:provider/provider.dart';
+import 'package:repforge/models/models.dart';
+import 'package:repforge/screens/routines_screen.dart';
+import 'package:repforge/services/managers/program_manager.dart';
+import 'package:repforge/services/workout_provider.dart';
+import '../test_utils/mock_storage_service.dart';
+
+void main() {
+  group('RoutinesScreen clone routine tests', () {
+    late MockStorageService mockStorage;
+    late WorkoutProvider provider;
+
+    setUp(() async {
+      mockStorage = MockStorageService();
+      provider = WorkoutProvider(
+        mockStorage,
+        programManager: ProgramManager(mockStorage),
+      );
+      await provider.init();
+
+      // Setup a pre-existing routine
+      await provider.createRoutine('Leg Day', ['squat', 'leg_press']);
+    });
+
+    testWidgets('shows clone option and clones routine successfully', (WidgetTester tester) async {
+      await tester.pumpWidget(
+        MaterialApp(
+          home: ChangeNotifierProvider<WorkoutProvider>.value(
+            value: provider,
+            child: const RoutinesScreen(),
+          ),
+        ),
+      );
+
+      await tester.pumpAndSettle();
+
+      // Find the routine card
+      final routineCard = find.text('Leg Day');
+      expect(routineCard, findsOneWidget);
+
+      // Long press to open options
+      await tester.longPress(routineCard);
+      await tester.pumpAndSettle();
+
+      // Find and tap the clone option
+      final cloneOption = find.text('Clone Routine');
+      expect(cloneOption, findsOneWidget);
+      await tester.tap(cloneOption);
+      await tester.pumpAndSettle();
+
+      // Verify clone dialog appears
+      final dialogTitle = find.text('Clone Routine');
+      expect(dialogTitle, findsOneWidget);
+
+      // Provide a new name
+      final textField = find.byType(TextField);
+      expect(textField, findsOneWidget);
+      await tester.enterText(textField, 'Leg Day Copy');
+      await tester.pumpAndSettle();
+
+      // Tap Clone button
+      final cloneButton = find.widgetWithText(FilledButton, 'Clone');
+      expect(cloneButton, findsOneWidget);
+      await tester.tap(cloneButton);
+      await tester.pumpAndSettle();
+
+      // Verify dialog is closed and new routine is in the provider
+      expect(find.text('Clone Routine'), findsNothing);
+      expect(provider.routines.length, 2);
+      expect(provider.routines[1].name, 'Leg Day Copy');
+      expect(provider.routines[1].exerciseIds, ['squat', 'leg_press']);
+
+      // Verify new routine is shown in UI
+      expect(find.text('Leg Day Copy'), findsOneWidget);
+    });
+
+    testWidgets('clones with original name if text field is empty', (WidgetTester tester) async {
+      await tester.pumpWidget(
+        MaterialApp(
+          home: ChangeNotifierProvider<WorkoutProvider>.value(
+            value: provider,
+            child: const RoutinesScreen(),
+          ),
+        ),
+      );
+
+      await tester.pumpAndSettle();
+
+      // Long press to open options
+      await tester.longPress(find.text('Leg Day'));
+      await tester.pumpAndSettle();
+
+      // Tap clone
+      await tester.tap(find.text('Clone Routine'));
+      await tester.pumpAndSettle();
+
+      // Do NOT enter text, just tap Clone button
+      await tester.tap(find.widgetWithText(FilledButton, 'Clone'));
+      await tester.pumpAndSettle();
+
+      // Verify provider has the cloned routine with the original name
+      expect(provider.routines.length, 2);
+      expect(provider.routines[1].name, 'Leg Day');
+      expect(provider.routines[1].exerciseIds, ['squat', 'leg_press']);
+    });
+  });
+}