feat: add Flutter web build support

apps/service_app/lib/data/repositories/service_repository.dart

@@ -1,4 +1,5 @@
 import 'package:uuid/uuid.dart';
+import 'package:image_picker/image_picker.dart';
 
 import '../../domain/models/service_models.dart';
 import '../services/api_client.dart';
@@ -86,14 +87,17 @@ class ServiceRepository {
 
   Future<void> arrive(String identity) async {
     final point = await _location.current();
-    await _api.post('$root/delivery/orders/$identity/arrive', body: _pointJson(point));
+    await _api.post(
+      '$root/delivery/orders/$identity/arrive',
+      body: _pointJson(point),
+    );
   }
 
   Future<void> submitDeliveryReceipt({
     required String identity,
     required String recipientName,
     required String recipientPhone,
-    required String proofFile,
+    required XFile proofFile,
   }) async {
     final proofUri = await _api.upload(proofFile);
     await _api.post(
@@ -118,7 +122,7 @@ class ServiceRepository {
     final uploaded = <Map<String, Object?>>[];
     for (final item in evidence) {
       final uri = await _api.upload(
-        item.filePath,
+        item.file,
         contentType: item.mediaType == 'video' ? 'video/mp4' : 'image/jpeg',
       );
       uploaded.add({
@@ -153,14 +157,14 @@ class EvidenceInput {
   const EvidenceInput({
     required this.evidenceType,
     required this.mediaType,
-    required this.filePath,
+    required this.file,
     required this.capturedAt,
     required this.requestNo,
   });
 
   final String evidenceType;
   final String mediaType;
-  final String filePath;
+  final XFile file;
   final DateTime capturedAt;
   final String requestNo;
 }