Add offline meal journal and secure sync

mobile/lib/screens/home_screen.dart

@@ -6,6 +6,7 @@ import '../screens/history_screen.dart';
 import '../services/sync_service.dart';
 import '../services/auth_service.dart';
 import 'training_screens.dart';
+import 'meal_journal_screen.dart';
 import '../utils/formatters.dart';
 import 'phone_login_screen.dart';
 
@@ -167,8 +168,9 @@ class HomeScreen extends StatelessWidget {
                 const _HabitCard(
                     icon: Icons.restaurant_outlined,
                     title: 'وجبتك القادمة',
-                    detail: 'سجّلها يدويًا الآن؛ تحليل الصور قيد الإعداد.',
-                    tag: 'تغذية'),
+                    detail: 'سجّلها يدويًا أو صحّح تقديرك.',
+                    tag: 'تغذية',
+                    onTap: _openMealJournal),
                 const SizedBox(height: 9),
                 const _HabitCard(
                     icon: Icons.water_drop_outlined,
@@ -349,11 +351,16 @@ class _HabitCard extends StatelessWidget {
       {required this.icon,
       required this.title,
       required this.detail,
-      required this.tag});
+      required this.tag,
+      this.onTap});
   final IconData icon;
   final String title, detail, tag;
+  final VoidCallback? onTap;
   @override
-  Widget build(BuildContext context) => Container(
+  Widget build(BuildContext context) => GestureDetector(
+      behavior: HitTestBehavior.opaque,
+      onTap: onTap,
+      child: Container(
         padding: const EdgeInsets.all(14),
         decoration: BoxDecoration(
             color: Colors.white, borderRadius: BorderRadius.circular(15)),
@@ -383,5 +390,7 @@ class _HabitCard extends StatelessWidget {
               style: const TextStyle(
                   color: _green, fontSize: 10, fontWeight: FontWeight.w600)),
         ]),
-      );
+      ));
 }
+
+void _openMealJournal() => Get.to(() => const MealJournalScreen());