feat: 新增角色管理模块，优化API与交互体验

1.  新增角色管理后台页面、路由与国际化文案
2.  重构API请求错误处理逻辑，统一拦截业务与HTTP错误
3.  新增确认弹窗组合式函数，区分取消与请求错误场景
4.  完善表格按钮权限与显示控制逻辑
5.  更新API参数规范与文档说明
6.  修复部分页面分页数据解析问题

src/locales/zh-chs.json

@@ -4,7 +4,10 @@
 	"page": {
 		"common": {
 			"help": "帮 助",
-			"use": "使用"
+			"use": "使用",
+			"confirm": "确定",
+			"cancel": "取消",
+			"tip": "提示"
 		},
 		"demo": {
 			"playground": {
@@ -45,6 +48,38 @@
 				}
 			}
 		},
+		"system_administration": {
+			"user_management": {
+				"role": {
+					"search": "查询",
+					"reset": "重置",
+					"index": "序号",
+					"name": "角色名称",
+					"status": "状态",
+					"enabled": "启用",
+					"disabled": "禁用",
+					"description": "描述",
+					"actions": "操作",
+					"add": "新 增",
+					"edit": "编 辑",
+					"delete": "删 除",
+					"add_title": "新增角色",
+					"edit_title": "编辑角色",
+					"enter_name": "请输入角色名称",
+					"enter_description": "请输入描述",
+					"select_status": "请选择状态",
+					"select_rows_first": "请先勾选要操作的数据",
+					"operation_success": "操作成功",
+					"confirm_delete": "确定要删除该角色吗?",
+					"length_limit": "长度在 1 到 100 个字符",
+					"assign_permissions": "分配权限",
+					"permission_assignment": "权限分配",
+					"confirm": "确定",
+					"cancel": "取消",
+					"tip": "提示"
+				}
+			}
+		},
 		"system": {
 			"login": {
 				"time_is_most_precious": "时间是一切财富中最宝贵的财富",