R59 A1-A6：极简考勤打卡

- 新增 AttendanceRecord 与 AttendancePolicy 模型
- 上下班打卡、今日状态、月度统计端点
- 考勤管理页面（我的/团队/设置三 Tab）
- 移动端快速打卡入口
- 管理员补卡与审计日志
- 单测覆盖打卡幂等、迟到计算、工时计算、权限边界

server/src/services/workspaceSettings.js

@@ -10,6 +10,7 @@ const NAVIGATION_REGISTRY = Object.freeze({
   portal: { key: "portal", label: "Portal", icon: "home_app_logo", href: "/portal", anyOf: [] },
   team: { key: "team", label: "团队", icon: "groups", href: "/team", anyOf: [], featureFlagKey: FEATURE_FLAG_KEYS.presenceBoard },
   leaveRequests: { key: "leaveRequests", label: "请假", icon: "event_available", href: "/leave-requests", anyOf: ["leave.view_own", "leave.view_all", "leave.manage"] },
+  attendance: { key: "attendance", label: "考勤", icon: "schedule", href: "/attendance", anyOf: [], featureFlagKey: FEATURE_FLAG_KEYS.attendance },
   reimbursements: { key: "reimbursements", label: "报销", icon: "request_quote", href: "/reimbursements", anyOf: ["expense.view_own", "expense.view_all"] },
   assets: { key: "assets", label: "资产", icon: "inventory_2", href: "/assets", anyOf: ["asset.view_own", "asset.view_all", "asset.manage", "asset.transfer", "asset.inventory"] },
   weeklyReports: { key: "weeklyReports", label: "周报", icon: "article", href: "/weekly-reports", anyOf: [], featureFlagKey: FEATURE_FLAG_KEYS.weeklyReport },
@@ -49,6 +50,7 @@ const DEFAULT_MODULE_VISIBILITY = Object.freeze({
   portal: "main",
   team: "main",
   leaveRequests: "main",
+  attendance: "main",
   reimbursements: "main",
   assets: "main",
   weeklyReports: "main",