feat: 优化预算控制器排序逻辑，修复除零错误；增强程序启动时的JWT认证配置

WebApi/Controllers/BudgetController.cs

@@ -19,7 +19,7 @@ public class BudgetController(
                 .OrderBy(b => b.IsStopped)
                 .OrderBy(b => b.Category)
                 .ThenBy(b => b.Type)
-                .ThenByDescending(b => b.Current / b.Limit)
+                .ThenByDescending(b => b.Limit > 0 ? b.Current / b.Limit : 0)
                 .ThenBy(b => b.Name)
                 .ToList()
                 .Ok();