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/en.json

@@ -4,7 +4,10 @@
 	"page": {
 		"common": {
 			"help": "Help",
-			"use": "Apply"
+			"use": "Apply",
+			"confirm": "Confirm",
+			"cancel": "Cancel",
+			"tip": "Tip"
 		},
 		"demo": {
 			"playground": {
@@ -45,6 +48,38 @@
 				}
 			}
 		},
+		"system_administration": {
+			"user_management": {
+				"role": {
+					"search": "Search",
+					"reset": "Reset",
+					"index": "No.",
+					"name": "Role Name",
+					"status": "Status",
+					"enabled": "Enabled",
+					"disabled": "Disabled",
+					"description": "Description",
+					"actions": "Actions",
+					"add": "Add",
+					"edit": "Edit",
+					"delete": "Delete",
+					"add_title": "Add Role",
+					"edit_title": "Edit Role",
+					"enter_name": "Please enter role name",
+					"enter_description": "Please enter description",
+					"select_status": "Please select status",
+					"select_rows_first": "Please select rows first",
+					"operation_success": "Operation succeeded",
+					"confirm_delete": "Are you sure to delete this role?",
+					"length_limit": "Length should be 1 to 100 characters",
+					"assign_permissions": "Assign Permissions",
+					"permission_assignment": "Permission Assignment",
+					"confirm": "Confirm",
+					"cancel": "Cancel",
+					"tip": "Tip"
+				}
+			}
+		},
 		"system": {
 			"login": {
 				"time_is_most_precious": "Time is the most precious of all wealth",