fix(usage-script): add input validation and boundary checks (#208)

- Backend: validate auto-query interval ≤ 1440 minutes (24 hours)
- Frontend: add number input sanitization and blur validation
- Add user-friendly error messages for invalid inputs
- Support auto-clamping to valid ranges with toast notifications

src/i18n/locales/zh.json

@@ -378,8 +378,14 @@
     "queryFailedMessage": "查询失败",
     "queryScript": "查询脚本（JavaScript）",
     "timeoutSeconds": "超时时间（秒）",
+    "timeoutHint": "范围: 2-30 秒",
+    "timeoutMustBeInteger": "超时时间必须为整数，小数部分已忽略",
+    "timeoutCannotBeNegative": "超时时间不能为负数",
     "autoQueryInterval": "自动查询间隔（分钟）",
     "autoQueryIntervalHint": "0 表示不自动查询，建议设置 5-60 分钟",
+    "intervalMustBeInteger": "自动查询间隔必须为整数，小数部分已忽略",
+    "intervalCannotBeNegative": "自动查询间隔不能为负数",
+    "intervalAdjusted": "自动查询间隔已调整为 {{value}} 分钟",
     "scriptHelp": "脚本编写说明：",
     "configFormat": "配置格式：",
     "commentOptional": "可选",