修正上架時 Google Play 檢查出的 issue

lib/issue/issue_api.dart

@@ -12,8 +12,8 @@ class IssueApiService {
     // 篩選條件：指派給當前使用者 (responsible = currentUserId) 且狀態非 '已結案' (Status != 4)
     // 格式: 1^100^raised_date^*^responsible^=^$currentUserId^issue_status^!=^4
     // 讀取 user_id
-    String? user_id = await AuthManager.getUserId();
-    String filterPart = "responsible^$user_id";
+    String? userId = await AuthManager.getUserId();
+    String filterPart = "responsible^$userId";
 
     // 完整的 queryFilter 格式：Page^PageSize^SortColumn^SortOrder^Filter...
     String queryFilter = "1^100^issueid^*^^^$filterPart";

lib/issue/issue_model.dart

@@ -45,7 +45,7 @@ class Issue {
 
     final descriptionLength = rawDescription?.length ?? 0;
     final truncatedDescription = (descriptionLength > 50)
-        ? rawDescription!.substring(0, 50) + '...' // 列表截斷
+        ? '${rawDescription!.substring(0, 50)}...' // 列表截斷
         : rawDescription;
 
     return Issue(