feat: 添加首页图片选择功能（拍照/相册）

apps/lib/features/home/ui/screens/home_sheet.dart

@@ -1,9 +1,12 @@
 import 'package:flutter/material.dart';
+import 'package:image_picker/image_picker.dart';
 import 'package:lucide_icons/lucide_icons.dart';
 import '../../../../core/theme/design_tokens.dart';
 
 class HomeSheet extends StatelessWidget {
-  const HomeSheet({super.key});
+  final Function(List<XFile>) onImagesSelected;
+
+  const HomeSheet({super.key, required this.onImagesSelected});
 
   @override
   Widget build(BuildContext context) {
@@ -103,11 +106,28 @@ class HomeSheet extends StatelessWidget {
     );
   }
 
-  void _handleCameraTap(BuildContext context) {
-    Navigator.of(context).pop();
+  Future<void> _handleCameraTap(BuildContext context) async {
+    final picker = ImagePicker();
+    final image = await picker.pickImage(
+      source: ImageSource.camera,
+      imageQuality: 80,
+    );
+    if (image != null) {
+      onImagesSelected([image]);
+    }
+    if (context.mounted) {
+      Navigator.of(context).pop();
+    }
   }
 
-  void _handlePhotoTap(BuildContext context) {
-    Navigator.of(context).pop();
+  Future<void> _handlePhotoTap(BuildContext context) async {
+    final picker = ImagePicker();
+    final images = await picker.pickMultiImage(imageQuality: 80, limit: 3);
+    if (images.isNotEmpty) {
+      onImagesSelected(images);
+    }
+    if (context.mounted) {
+      Navigator.of(context).pop();
+    }
   }
 }