From c80d9adbcddc3df8009f717097460f26dc6925d8 Mon Sep 17 00:00:00 2001
From: shunli <shunli@qq.com>
Date: Thu, 28 May 2026 11:48:37 +0800
Subject: [PATCH] =?UTF-8?q?=E5=AE=9E=E7=8E=B0=E5=88=B6=E5=BA=A6=E7=AD=BE?=
 =?UTF-8?q?=E6=94=B6=E8=BD=BB=E9=87=8F=E5=9B=9E=E6=89=A7=EF=BC=8805-28-oa-?=
 =?UTF-8?q?policy-acknowledgement-v1=EF=BC=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../spec/hyb-oa/backend-fastify-prisma.md     |  70 +++
 .../check.jsonl                               |   4 +
 .../design.md                                 | 176 ++++++++
 .../implement.jsonl                           |   5 +
 .../05-28-oa-policy-acknowledgement-v1/prd.md |  95 ++++
 .../task.json                                 |  34 ++
 client/src/api/announcements.ts               |  71 ++-
 client/src/pages/AnnouncementsPage.tsx        | 130 +++++-
 client/src/pages/PortalAnnouncementsPage.tsx  | 209 +++++++--
 .../e2e/announcements-policy-ack.spec.ts      | 307 +++++++++++++
 docs/员工快速上手.md                          |   3 +-
 docs/管理员手册.md                            |   8 +-
 .../migration.sql                             |  43 ++
 server/prisma/schema.prisma                   |  45 +-
 server/src/routes/announcements.js            | 264 ++++++++++-
 .../tests/unit/routes/announcements.test.js   | 420 ++++++++++++++++++
 16 files changed, 1806 insertions(+), 78 deletions(-)
 create mode 100644 .trellis/tasks/05-28-oa-policy-acknowledgement-v1/check.jsonl
 create mode 100644 .trellis/tasks/05-28-oa-policy-acknowledgement-v1/design.md
 create mode 100644 .trellis/tasks/05-28-oa-policy-acknowledgement-v1/implement.jsonl
 create mode 100644 .trellis/tasks/05-28-oa-policy-acknowledgement-v1/prd.md
 create mode 100644 .trellis/tasks/05-28-oa-policy-acknowledgement-v1/task.json
 create mode 100644 client/tests/e2e/announcements-policy-ack.spec.ts
 create mode 100644 server/prisma/migrations/20260528113000_policy_acknowledgements/migration.sql
 create mode 100644 server/tests/unit/routes/announcements.test.js

diff --git a/.trellis/spec/hyb-oa/backend-fastify-prisma.md b/.trellis/spec/hyb-oa/backend-fastify-prisma.md
index 2f0d3494..7f61236c 100644
--- a/.trellis/spec/hyb-oa/backend-fastify-prisma.md
+++ b/.trellis/spec/hyb-oa/backend-fastify-prisma.md
@@ -22,3 +22,73 @@ QA script patterns over new abstractions.
 - `cd server && node --check src/routes/workflow.js`
 - `cd server && ./scripts/regression-workflow-actions.sh`
 - `cd server && ./scripts/regression-all.sh`
+
+## Scenario: Portal Announcement Acknowledgement
+
+### 1. Scope / Trigger
+
+- Trigger: extending `announcements_v1` from read-only announcements into formal employee acknowledgement.
+- Applies to `server/prisma/schema.prisma`, `server/src/routes/announcements.js`, `client/src/api/announcements.ts`, employee `/announcements`, and admin `/system/announcements`.
+- Use this only for lightweight policy acknowledgement; do not treat it as electronic signature, CA signing, contract signing, or full policy CMS.
+
+### 2. Signatures
+
+- DB: `PortalAnnouncement` may carry `category`, `requires_acknowledgement`, `acknowledgement_statement`, `acknowledgement_due_at`.
+- DB: `PortalAnnouncementAcknowledgement` stores one receipt per `(announcement_id, employee_id)` with statement/title/summary snapshots and `actor_id`.
+- API: `GET /api/announcements?manage=0` returns visible announcements and the current employee's acknowledgement status.
+- API: `GET /api/announcements?manage=1` requires `system.settings` and returns acknowledgement summary plus minimal pending employees.
+- API: `POST /api/announcements/:id/acknowledge` accepts `{ "confirmed": true }`.
+
+### 3. Contracts
+
+- Required acknowledgement status values: `not_required`, `pending`, `acknowledged`, `overdue`.
+- Employee response must not include other employees' acknowledgement rows or pending lists.
+- Admin pending list may include only `id`, `employeeNo`, `name`, and `status`; do not include phone, email, WeCom userid, account identifiers, or sensitive profile fields.
+- Acknowledgement is explicit only: opening an announcement or clicking its link must never create a receipt.
+- Policy content changes after any acknowledgement require a new announcement version; do not mutate title, summary, category, required flag, or statement in place.
+
+### 4. Validation & Error Matrix
+
+- `announcements_v1` disabled -> `409 VALID_001`.
+- policy acknowledgement without statement -> `400 VALID_001`.
+- `manage=1` without `system.settings` -> `403 PERM_001`.
+- acknowledge invisible/missing announcement -> `404 ANN_404`.
+- acknowledge normal announcement -> `409 VALID_001`.
+- acknowledge without `{ confirmed: true }` -> `400 VALID_001`.
+- edit protected policy fields after acknowledgement exists -> `409 VALID_001`.
+
+### 5. Good/Base/Bad Cases
+
+- Good: admin creates a policy announcement, employee checks the confirmation box, server creates one receipt and one audit log.
+- Base: normal announcement remains compatible and returns `not_required`.
+- Bad: frontend displays another employee's receipt status on `/announcements`.
+- Bad: admin updates an acknowledged policy title instead of creating a new version.
+
+### 6. Tests Required
+
+- Prisma validate after schema/migration changes.
+- Route focused tests for required statement, permission, idempotency, normal/invisible announcement rejection, admin summary, and protected edit rejection.
+- Frontend typecheck and build.
+- Playwright flow for admin create -> employee acknowledge -> admin summary update when UI changes.
+
+### 7. Wrong vs Correct
+
+#### Wrong
+
+```js
+await prisma.portalAnnouncement.update({
+  where: { id },
+  data: { title: "制度 V2" },
+});
+```
+
+#### Correct
+
+```js
+const acknowledgementCount = await prisma.portalAnnouncementAcknowledgement.count({
+  where: { announcement_id: id },
+});
+if (acknowledgementCount > 0) {
+  throw new AppError({ code: "VALID_001", message: "参数校验失败", statusCode: 409 });
+}
+```
diff --git a/.trellis/tasks/05-28-oa-policy-acknowledgement-v1/check.jsonl b/.trellis/tasks/05-28-oa-policy-acknowledgement-v1/check.jsonl
new file mode 100644
index 00000000..ef1401d5
--- /dev/null
+++ b/.trellis/tasks/05-28-oa-policy-acknowledgement-v1/check.jsonl
@@ -0,0 +1,4 @@
+{"file": ".trellis/spec/hyb-oa/project-governance.md", "reason": "Verify Trellis task contract and migration approval boundaries."}
+{"file": ".trellis/spec/hyb-oa/backend-fastify-prisma.md", "reason": "Verify Prisma, route and backend test requirements."}
+{"file": ".trellis/spec/hyb-oa/frontend-react-vite-design.md", "reason": "Verify frontend page changes follow existing OA design conventions."}
+{"file": ".trellis/spec/hyb-oa/security-privacy.md", "reason": "Verify acknowledgement APIs and UI do not leak sensitive employee or policy data."}
diff --git a/.trellis/tasks/05-28-oa-policy-acknowledgement-v1/design.md b/.trellis/tasks/05-28-oa-policy-acknowledgement-v1/design.md
new file mode 100644
index 00000000..87b7ce4e
--- /dev/null
+++ b/.trellis/tasks/05-28-oa-policy-acknowledgement-v1/design.md
@@ -0,0 +1,176 @@
+# 制度签收轻量回执设计
+
+## Summary
+
+采用“公告中心扩展 + 独立回执表”的方案。制度签收公告仍是 `PortalAnnouncement`，新增必签元数据；员工签收写入新回执表。这样复用既有公告入口、权限、feature flag 和 Portal 展示，同时让正式签收回执独立留痕，不把公告阅读误认为签收。
+
+## Data Model
+
+建议扩展 `PortalAnnouncement`：
+
+- `category`: `String`，默认 `general`，V1 值为 `general` / `policy`
+- `requires_acknowledgement`: `Boolean`，默认 `false`
+- `acknowledgement_statement`: `String?`，必签时必填
+- `acknowledgement_due_at`: `DateTime?`
+
+新增 `PortalAnnouncementAcknowledgement`：
+
+- `id`: uuid
+- `announcement_id`: uuid，关联 `PortalAnnouncement`
+- `employee_id`: uuid，关联 `Employee`
+- `acknowledged_at`: DateTime
+- `statement_snapshot`: String
+- `title_snapshot`: String
+- `summary_snapshot`: String
+- `actor_id`: uuid，可与 employee_id 相同，V1 不支持代签
+- `created_at`: DateTime
+
+索引/约束：
+
+- `@@unique([announcement_id, employee_id])`
+- `@@index([employee_id, acknowledged_at])`
+- `@@index([announcement_id, acknowledged_at])`
+
+## API Contract
+
+### `GET /api/announcements?manage=0`
+
+普通员工返回可见公告，并附带本人签收状态：
+
+```json
+{
+  "id": "...",
+  "title": "费用报销制度签收",
+  "summary": "请阅读并确认小团队 V1 报销规则。",
+  "category": "policy",
+  "requiresAcknowledgement": true,
+  "acknowledgementStatement": "我已阅读并理解该制度。",
+  "acknowledgementDueAt": "2026-06-01T00:00:00.000Z",
+  "acknowledgement": {
+    "status": "pending",
+    "acknowledgedAt": null,
+    "overdue": false
+  }
+}
+```
+
+普通员工只看到自己的签收状态，不看到他人列表。
+
+### `GET /api/announcements?manage=1`
+
+仅 `system.settings` 可用。返回管理视图，包含统计：
+
+```json
+{
+  "acknowledgementSummary": {
+    "required": true,
+    "totalActiveEmployees": 6,
+    "acknowledgedCount": 4,
+    "pendingCount": 2,
+    "overdueCount": 1
+  },
+  "pendingEmployees": [
+    { "id": "...", "employeeNo": "HYD***", "name": "员工A" }
+  ]
+}
+```
+
+未签员工列表只返回员工号、姓名和状态，不返回手机号、邮箱、身份证、企业微信 userid 或账号凭据。
+
+### `POST /api/announcements/:id/acknowledge`
+
+普通员工签收本人回执。
+
+请求：
+
+```json
+{
+  "confirmed": true
+}
+```
+
+校验：
+
+- `announcements_v1` 必须启用。
+- 公告必须 active 且在可见时间窗口内。
+- 公告 `requires_acknowledgement=true`。
+- `confirmed=true`。
+- 员工必须 active。
+- 重复签收返回已有回执，不新建第二条。
+
+响应：
+
+```json
+{
+  "item": {
+    "announcementId": "...",
+    "status": "acknowledged",
+    "acknowledgedAt": "..."
+  }
+}
+```
+
+审计：
+
+- `PORTAL_ANNOUNCEMENT_ACKNOWLEDGED`
+
+## Frontend Design
+
+使用 `frontend-design` 裁决后的方向：**安静、正式、清晰的 OA 合规面板**。
+
+员工公告页：
+
+- 保持公告列表，不做大营销布局。
+- 必签公告使用更明确的状态列/徽标：待签收、已签收、已逾期。
+- 卡片内展示签收声明、截止日期和主按钮。
+- 签收按钮前必须有 checkbox：“我已阅读并理解该制度内容和资料留存边界”。
+- 已签后展示签收时间，不再显示可重复操作按钮。
+
+管理员公告页：
+
+- 左侧新建公告表单增加：
+  - 公告类型：普通 / 制度签收
+  - 签收声明
+  - 截止日期
+- 右侧列表显示签收统计，不把未签名单做成大表格；V1 用紧凑列表即可。
+- 页面继续使用现有 `card-std` / PC 操作页模式，不新建独立视觉系统。
+
+## Permissions
+
+- 创建/编辑/归档/查看统计：`system.settings`
+- 查看公告：authenticated user
+- 签收：authenticated active employee，仅本人
+- 不允许管理员代签，不允许普通员工查看他人签收。
+
+## Migration Notes
+
+- 新增字段全部带默认或 nullable，避免影响既有公告数据。
+- 新增回执表只记录未来签收，不导入历史纸质/电子签收。
+- 生产 migration 只在用户明确批准部署时应用；本任务本地验证不代表公网已启用。
+
+## Tests
+
+后端 focused：
+
+- 创建普通公告仍兼容。
+- 创建必签公告缺声明 -> 400。
+- 员工获取公告时看到本人 pending 状态。
+- 员工签收必签公告 -> 201/200，审计写入。
+- 重复签收 -> 幂等。
+- 普通公告签收 -> 409。
+- 管理员 manage 查询看到统计和未签列表。
+
+前端 E2E：
+
+- 管理员创建必签公告。
+- 员工进入公告页，勾选确认，点击签收。
+- 员工刷新后状态为已签收。
+- 管理员看到已签/待签统计变化。
+
+## Reviewer Need
+
+本任务涉及 Prisma migration、权限和审计。实施后需要做只读 review，重点看：
+
+- 普通用户是否可能看到他人签收。
+- 管理接口是否泄露手机号、邮箱、账号、企业微信 userid。
+- 已签回执是否会被公告编辑破坏语义。
diff --git a/.trellis/tasks/05-28-oa-policy-acknowledgement-v1/implement.jsonl b/.trellis/tasks/05-28-oa-policy-acknowledgement-v1/implement.jsonl
new file mode 100644
index 00000000..9c409f89
--- /dev/null
+++ b/.trellis/tasks/05-28-oa-policy-acknowledgement-v1/implement.jsonl
@@ -0,0 +1,5 @@
+{"file": ".trellis/spec/hyb-oa/project-governance.md", "reason": "Trellis task, approvals, commit and migration governance for a non-trivial feature."}
+{"file": ".trellis/spec/hyb-oa/backend-fastify-prisma.md", "reason": "Backend route, Prisma migration and validation requirements."}
+{"file": ".trellis/spec/hyb-oa/frontend-react-vite-design.md", "reason": "Frontend design authority and PC operation page conventions."}
+{"file": ".trellis/spec/hyb-oa/security-privacy.md", "reason": "Sensitive data exclusions for policy materials and employee acknowledgement reports."}
+{"file": ".trellis/spec/hyb-oa/docs-and-evidence.md", "reason": "Evidence and report boundaries for task artifacts."}
diff --git a/.trellis/tasks/05-28-oa-policy-acknowledgement-v1/prd.md b/.trellis/tasks/05-28-oa-policy-acknowledgement-v1/prd.md
new file mode 100644
index 00000000..b8cfec5e
--- /dev/null
+++ b/.trellis/tasks/05-28-oa-policy-acknowledgement-v1/prd.md
@@ -0,0 +1,95 @@
+# 制度签收轻量回执
+
+## Goal
+
+在不引入完整电子签章、复杂制度库或合同级法务系统的前提下，为 OA 公告中心增加“正式制度签收回执”能力。管理员可发布需要员工确认的制度公告，员工必须通过明确勾选和点击完成签收，系统保存签收时间、签收人、声明快照和审计记录。目标是补齐 OALAUNCH1 数据治理门禁中的“公告阅读不等于正式签收”缺口。
+
+## Scope
+
+- 基于现有 `announcements_v1` 和公告中心扩展，不新增独立制度 CMS。
+- 支持管理员创建/编辑公告时标记“需要签收”，填写签收声明和签收截止日期。
+- 支持员工在公告页查看待签收状态，并通过明确确认动作完成本人签收。
+- 支持管理员在公告管理页查看签收总数、已签、未签、逾期统计和未签员工脱敏/最小必要列表。
+- 后端保存签收回执、签收声明快照和审计日志。
+- 覆盖后端 focused 测试、前端 typecheck/build 和至少一个公告签收 E2E/组件级流程验证。
+
+## What I Already Know
+
+- 当前 `PortalAnnouncement` 只有公告标题、摘要、链接、启停、优先级和时间窗口，没有签收模型。
+- `EmployeeChecklistTask.task_type = policy_ack` 已存在，但它只服务入职 checklist，不适合作为公司级制度签收台账。
+- `docs/管理员手册.md` 和 `docs/员工快速上手.md` 已明确：公告阅读不等于正式签收，制度签收是正式启用前的数据治理缺口。
+- 公告模块已有 feature flag `announcements_v1`、后台路由 `/api/announcements`、员工页 `/announcements` 和管理页 `/system/announcements`。
+- 前端视觉裁决以 `frontend-design` 为准；本任务应保持 OA 操作界面简洁、密集、可扫读，不做营销页或重视觉重构。
+
+## Requirements
+
+- 管理员创建公告时可选择：
+  - 普通公告：无需签收，行为保持兼容。
+  - 制度签收公告：需要签收，必须有签收声明，建议可填截止日期。
+- 员工看到制度签收公告时必须有明确状态：
+  - 待签收
+  - 已签收
+  - 已逾期未签
+- 员工签收必须是显式动作：勾选确认声明后点击签收按钮；不能仅因打开页面或点击链接视为签收。
+- 同一员工对同一公告只能形成一条有效回执；重复点击应幂等返回已签收状态。
+- 签收回执至少记录：公告、员工、签收时间、签收声明快照、公告标题/摘要快照、操作者、创建时间。
+- 管理员可以查看签收概览和未签员工列表；普通员工不能查看他人签收状态。
+- 公告正文和链接仍按现有敏感资料边界处理：不上传涉密合同正文、银行资料、完整路径、账号凭据或敏感报价。
+- 更新已签收的制度公告不自动重置签收；如制度内容变化，应新建一条新版本公告，避免历史回执语义混乱。
+
+## Acceptance Criteria
+
+- [x] 后端模型和迁移支持公告签收回执，Prisma validate 通过。
+- [x] `GET /api/announcements` 对普通员工返回本人签收状态，不泄露他人信息。
+- [x] `POST /api/announcements/:id/acknowledge` 支持本人签收，校验 feature flag、公告可见、需要签收和确认声明。
+- [x] 管理员管理接口能看到签收统计和未签员工最小必要信息。
+- [x] 前端员工公告页能完成待签收 -> 已签收流程，按钮状态、防重复和逾期提示清楚。
+- [x] 前端公告管理页能创建必签公告并查看签收概览。
+- [x] 后端 focused 测试覆盖签收权限、幂等、不可签普通公告、不可签不可见公告。
+- [x] 前端 typecheck/build 通过，签收流程 E2E 或等价自动化通过。
+- [x] 不部署、不改公网配置、不批量写真实签收数据；公网启用需另行批准。
+
+## Out Of Scope
+
+- 不做电子签章、CA、手写签名或法律级电子合同。
+- 不做复杂制度库、制度版本全文管理、在线红线审阅或知识库问答。
+- 不做按部门/角色定向签收；V1 默认面向所有 active 员工。
+- 不做代签、补签证明上传、批量导入历史纸质签收。
+- 不通过企业微信原生审批承载制度签收；企业微信只可作为后续提醒入口。
+- 不把公司制度原文、合同正文、银行资料、工资资料、完整本地路径或敏感附件导入仓库或 Trellis。
+
+## Test Plan
+
+- Backend:
+  - `cd server && npm run prisma:validate`
+  - `cd server && node --check src/routes/announcements.js`
+  - 增加并运行公告签收 focused 单测或现有路由测试。
+- Frontend:
+  - `cd client && npm run typecheck`
+  - `cd client && npm run build`
+  - 增加/运行公告签收 E2E：管理员创建必签公告，员工签收，管理员看到统计。
+- Governance:
+  - `node scripts/qa/check-trellis-governance.mjs`
+  - `git diff --check`
+
+## Rollout / Rollback
+
+- V1 受现有 `announcements_v1` 控制；不新增部署 env。
+- 本地/测试通过后再决定是否部署公网。
+- 回滚方式：关闭 `announcements_v1` 或隐藏公告入口；已保存回执作为审计记录保留，不自动删除。
+
+## Open Questions
+
+- 建议 V1 默认“所有 active 员工都需要签收”，暂不做定向范围。是否批准按这个范围实现？
+
+## Technical Notes
+
+- 参考文件：
+  - `server/prisma/schema.prisma`
+  - `server/src/routes/announcements.js`
+  - `client/src/api/announcements.ts`
+  - `client/src/pages/AnnouncementsPage.tsx`
+  - `client/src/pages/PortalAnnouncementsPage.tsx`
+  - `.trellis/spec/hyb-oa/frontend-react-vite-design.md`
+  - `.trellis/spec/hyb-oa/backend-fastify-prisma.md`
+  - `.trellis/spec/hyb-oa/security-privacy.md`
diff --git a/.trellis/tasks/05-28-oa-policy-acknowledgement-v1/task.json b/.trellis/tasks/05-28-oa-policy-acknowledgement-v1/task.json
new file mode 100644
index 00000000..9ca73cfb
--- /dev/null
+++ b/.trellis/tasks/05-28-oa-policy-acknowledgement-v1/task.json
@@ -0,0 +1,34 @@
+{
+  "id": "oa-policy-acknowledgement-v1",
+  "name": "oa-policy-acknowledgement-v1",
+  "title": "制度签收轻量回执",
+  "description": "在现有公告中心上增加轻量制度签收回执，支持管理员发布必签制度公告、员工显式签收、管理员查看签收统计和审计留痕。",
+  "status": "in_progress",
+  "dev_type": "feature",
+  "scope": "server-client-prisma-announcements-policy-acknowledgement",
+  "package": "hyb-oa",
+  "priority": "P2",
+  "creator": "shunli",
+  "assignee": "shunli",
+  "createdAt": "2026-05-28",
+  "completedAt": null,
+  "branch": null,
+  "base_branch": "main",
+  "worktree_path": null,
+  "commit": null,
+  "pr_url": null,
+  "subtasks": [],
+  "children": [],
+  "parent": null,
+  "relatedFiles": [
+    "server/prisma/schema.prisma",
+    "server/src/routes/announcements.js",
+    "client/src/api/announcements.ts",
+    "client/src/pages/AnnouncementsPage.tsx",
+    "client/src/pages/PortalAnnouncementsPage.tsx",
+    "docs/管理员手册.md",
+    "docs/员工快速上手.md"
+  ],
+  "notes": "",
+  "meta": {}
+}
\ No newline at end of file
diff --git a/client/src/api/announcements.ts b/client/src/api/announcements.ts
index 29a341c2..18553808 100644
--- a/client/src/api/announcements.ts
+++ b/client/src/api/announcements.ts
@@ -1,5 +1,29 @@
 import { apiRequestData } from "./http";
 
+export type AnnouncementCategory = "general" | "policy";
+export type AnnouncementAcknowledgementStatus = "not_required" | "pending" | "acknowledged" | "overdue";
+
+export type PortalAnnouncementAcknowledgement = {
+  status: AnnouncementAcknowledgementStatus;
+  acknowledgedAt: string | null;
+  overdue: boolean;
+};
+
+export type PortalAnnouncementAcknowledgementSummary = {
+  required: boolean;
+  totalActiveEmployees: number;
+  acknowledgedCount: number;
+  pendingCount: number;
+  overdueCount: number;
+};
+
+export type PortalAnnouncementPendingEmployee = {
+  id: string;
+  employeeNo: string;
+  name: string;
+  status: "pending" | "overdue";
+};
+
 export type PortalAnnouncement = {
   id: string;
   title: string;
@@ -9,16 +33,18 @@ export type PortalAnnouncement = {
   endsAt: string | null;
   enabled: boolean;
   priority: number;
+  category: AnnouncementCategory;
+  requiresAcknowledgement: boolean;
+  acknowledgementStatement: string | null;
+  acknowledgementDueAt: string | null;
+  acknowledgement?: PortalAnnouncementAcknowledgement;
+  acknowledgementSummary?: PortalAnnouncementAcknowledgementSummary;
+  pendingEmployees?: PortalAnnouncementPendingEmployee[];
   createdAt: string | null;
   updatedAt: string | null;
 };
 
-export async function fetchAnnouncements(manage = false) {
-  const suffix = manage ? "?manage=1" : "";
-  return apiRequestData<{ items: PortalAnnouncement[] }>(`/api/announcements${suffix}`);
-}
-
-export async function createAnnouncement(payload: {
+export type AnnouncementWritePayload = {
   title: string;
   summary: string;
   linkUrl?: string | null;
@@ -26,22 +52,25 @@ export async function createAnnouncement(payload: {
   endsAt?: string | null;
   enabled?: boolean;
   priority?: number;
-}) {
+  category?: AnnouncementCategory;
+  requiresAcknowledgement?: boolean;
+  acknowledgementStatement?: string | null;
+  acknowledgementDueAt?: string | null;
+};
+
+export async function fetchAnnouncements(manage = false) {
+  const suffix = manage ? "?manage=1" : "";
+  return apiRequestData<{ items: PortalAnnouncement[] }>(`/api/announcements${suffix}`);
+}
+
+export async function createAnnouncement(payload: AnnouncementWritePayload) {
   return apiRequestData<{ item: PortalAnnouncement }>("/api/announcements", {
     method: "POST",
     body: JSON.stringify(payload),
   });
 }
 
-export async function updateAnnouncement(id: string, payload: Partial<{
-  title: string;
-  summary: string;
-  linkUrl: string | null;
-  startsAt: string | null;
-  endsAt: string | null;
-  enabled: boolean;
-  priority: number;
-}>) {
+export async function updateAnnouncement(id: string, payload: Partial<AnnouncementWritePayload>) {
   return apiRequestData<{ item: PortalAnnouncement }>(`/api/announcements/${id}`, {
     method: "PATCH",
     body: JSON.stringify(payload),
@@ -54,3 +83,13 @@ export async function archiveAnnouncement(id: string) {
     body: JSON.stringify({}),
   });
 }
+
+export async function acknowledgeAnnouncement(id: string) {
+  return apiRequestData<{ item: { id: string | null; announcementId: string; status: "acknowledged"; acknowledgedAt: string | null } }>(
+    `/api/announcements/${id}/acknowledge`,
+    {
+      method: "POST",
+      body: JSON.stringify({ confirmed: true }),
+    },
+  );
+}
diff --git a/client/src/pages/AnnouncementsPage.tsx b/client/src/pages/AnnouncementsPage.tsx
index fda35154..a7aaca24 100644
--- a/client/src/pages/AnnouncementsPage.tsx
+++ b/client/src/pages/AnnouncementsPage.tsx
@@ -1,21 +1,135 @@
-import { useQuery } from "@tanstack/react-query";
-import { fetchAnnouncements } from "../api/announcements";
+import { useState } from "react";
+import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
+import { toast } from "sonner";
+import { acknowledgeAnnouncement, fetchAnnouncements, type AnnouncementAcknowledgementStatus, type PortalAnnouncement } from "../api/announcements";
 import { PageHeader } from "../components/common/PageHeader";
+import { Button } from "../components/ui/button";
+import { formatDisplayDate, formatDisplayDateTime } from "../lib/displayFormat";
+
+function acknowledgementLabel(status: AnnouncementAcknowledgementStatus) {
+  if (status === "acknowledged") return "已签收";
+  if (status === "overdue") return "已逾期";
+  if (status === "pending") return "待签收";
+  return "普通公告";
+}
+
+function acknowledgementBadgeClass(status: AnnouncementAcknowledgementStatus) {
+  if (status === "acknowledged") return "badge-success";
+  if (status === "overdue") return "badge-error";
+  if (status === "pending") return "badge-warning";
+  return "badge-neutral";
+}
+
+function AnnouncementCard({
+  item,
+  checked,
+  submitting,
+  onCheckedChange,
+  onAcknowledge,
+}: {
+  item: PortalAnnouncement;
+  checked: boolean;
+  submitting: boolean;
+  onCheckedChange: (checked: boolean) => void;
+  onAcknowledge: () => void;
+}) {
+  const acknowledgement = item.acknowledgement ?? { status: "not_required", acknowledgedAt: null, overdue: false };
+  const requiresAcknowledgement = item.requiresAcknowledgement;
+  const isAcknowledged = acknowledgement.status === "acknowledged";
+  const canSubmit = requiresAcknowledgement && !isAcknowledged && checked && !submitting;
+
+  return (
+    <article
+      className={`card-std p-5 md:p-6 ${requiresAcknowledgement ? "border-l-4 border-l-[var(--color-accent-primary)]" : ""}`}
+      data-testid={`announcement-card-${item.id}`}
+    >
+      <div className="flex flex-col gap-3 md:flex-row md:items-start md:justify-between">
+        <div className="min-w-0">
+          <div className="flex flex-wrap items-center gap-2">
+            <h2 className="text-lg font-semibold leading-7 text-zinc-900">{item.title}</h2>
+            <span className={acknowledgementBadgeClass(acknowledgement.status)}>
+              {acknowledgementLabel(acknowledgement.status)}
+            </span>
+          </div>
+          <p className="mt-2 text-sm leading-6 text-zinc-600">{item.summary}</p>
+        </div>
+        {item.acknowledgementDueAt ? (
+          <div className="shrink-0 rounded-lg border border-slate-200 bg-slate-50 px-3 py-2 text-xs text-zinc-600">
+            截止：{formatDisplayDate(item.acknowledgementDueAt)}
+          </div>
+        ) : null}
+      </div>
+
+      {item.linkUrl ? (
+        <a className="mt-3 inline-flex text-sm font-medium text-primary hover:underline" href={item.linkUrl} target="_blank" rel="noreferrer">
+          查看链接
+        </a>
+      ) : null}
+
+      {requiresAcknowledgement ? (
+        <div className="mt-4 rounded-lg border border-slate-200 bg-slate-50/70 p-4">
+          <div className="text-xs font-semibold text-zinc-500">签收声明</div>
+          <div className="mt-1 text-sm leading-6 text-zinc-800">{item.acknowledgementStatement}</div>
+          {isAcknowledged ? (
+            <div className="mt-3 text-sm text-emerald-700">
+              已于 {formatDisplayDateTime(acknowledgement.acknowledgedAt)} 完成本人签收。
+            </div>
+          ) : (
+            <div className="mt-4 flex flex-col gap-3 md:flex-row md:items-center md:justify-between">
+              <label className="flex min-w-0 items-start gap-2 text-sm leading-6 text-zinc-700">
+                <input
+                  type="checkbox"
+                  className="mt-1 h-4 w-4 rounded border-zinc-300"
+                  checked={checked}
+                  onChange={(event) => onCheckedChange(event.target.checked)}
+                />
+                <span>我已阅读并理解该制度内容，确认按公司制度执行。</span>
+              </label>
+              <Button type="button" className="w-full md:w-auto" disabled={!canSubmit} onClick={onAcknowledge}>
+                {submitting ? "提交中..." : acknowledgement.status === "overdue" ? "逾期补签" : "确认签收"}
+              </Button>
+            </div>
+          )}
+        </div>
+      ) : null}
+    </article>
+  );
+}
 
 export function AnnouncementsPage() {
+  const queryClient = useQueryClient();
+  const [checkedById, setCheckedById] = useState<Record<string, boolean>>({});
   const announcementsQuery = useQuery({ queryKey: ["announcements", "public"], queryFn: () => fetchAnnouncements(false) });
+  const acknowledgeMutation = useMutation({
+    mutationFn: acknowledgeAnnouncement,
+    onSuccess: async (_data, id) => {
+      setCheckedById((current) => ({ ...current, [id]: false }));
+      await queryClient.invalidateQueries({ queryKey: ["announcements"] });
+      toast.success("签收已记录");
+    },
+    onError: () => {
+      toast.error("签收失败，请刷新后重试");
+    },
+  });
 
   return (
     <div className="space-y-6">
-      <PageHeader title="公告" subtitle="全员查看公司通知、制度链接和 FAQ 入口。" />
+      <PageHeader title="公告" subtitle="查看公司通知、制度链接和需要本人确认的制度签收。" />
       <div className="space-y-4">
+        {announcementsQuery.isLoading ? <div className="card-std p-6 text-sm text-zinc-500">公告加载中...</div> : null}
         {(announcementsQuery.data?.items ?? []).map((item) => (
-          <div key={item.id} className="card-std p-6">
-            <div className="text-lg font-semibold text-zinc-900">{item.title}</div>
-            <div className="mt-2 text-sm text-zinc-600">{item.summary}</div>
-            {item.linkUrl ? <a className="mt-3 inline-block text-sm text-primary" href={item.linkUrl} target="_blank" rel="noreferrer">查看链接</a> : null}
-          </div>
+          <AnnouncementCard
+            key={item.id}
+            item={item}
+            checked={Boolean(checkedById[item.id])}
+            submitting={acknowledgeMutation.isPending && acknowledgeMutation.variables === item.id}
+            onCheckedChange={(checked) => setCheckedById((current) => ({ ...current, [item.id]: checked }))}
+            onAcknowledge={() => acknowledgeMutation.mutate(item.id)}
+          />
         ))}
+        {!announcementsQuery.isLoading && !(announcementsQuery.data?.items ?? []).length ? (
+          <div className="card-std p-6 text-sm text-zinc-500">暂无公告</div>
+        ) : null}
       </div>
     </div>
   );
diff --git a/client/src/pages/PortalAnnouncementsPage.tsx b/client/src/pages/PortalAnnouncementsPage.tsx
index 6cd27631..ea6672ae 100644
--- a/client/src/pages/PortalAnnouncementsPage.tsx
+++ b/client/src/pages/PortalAnnouncementsPage.tsx
@@ -1,11 +1,29 @@
 import { useState } from "react";
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
-import { archiveAnnouncement, createAnnouncement, fetchAnnouncements, updateAnnouncement } from "../api/announcements";
+import { toast } from "sonner";
+import { archiveAnnouncement, createAnnouncement, fetchAnnouncements, updateAnnouncement, type AnnouncementCategory, type PortalAnnouncement } from "../api/announcements";
 import { PageHeader } from "../components/common/PageHeader";
 import { Button } from "../components/ui/button";
 import { Input } from "../components/ui/input";
 import { Label } from "../components/ui/label";
-import { toast } from "sonner";
+import { Tabs, TabsList, TabsTrigger } from "../components/ui/tabs";
+import { Textarea } from "../components/ui/textarea";
+import { formatDisplayDate, formatDisplayDateTime } from "../lib/displayFormat";
+
+function toChinaEndOfDayIso(value: string) {
+  if (!value) return null;
+  return new Date(`${value}T23:59:59+08:00`).toISOString();
+}
+
+function acknowledgementModeLabel(category: AnnouncementCategory, requiresAcknowledgement: boolean) {
+  return category === "policy" || requiresAcknowledgement ? "制度签收" : "普通公告";
+}
+
+function formatSummary(item: PortalAnnouncement) {
+  const summary = item.acknowledgementSummary;
+  if (!summary?.required) return "无需签收";
+  return `已签 ${summary.acknowledgedCount}/${summary.totalActiveEmployees} · 待签 ${summary.pendingCount}`;
+}
 
 export function PortalAnnouncementsPage() {
   const queryClient = useQueryClient();
@@ -13,20 +31,39 @@ export function PortalAnnouncementsPage() {
   const [summary, setSummary] = useState("");
   const [linkUrl, setLinkUrl] = useState("");
   const [priority, setPriority] = useState("100");
+  const [mode, setMode] = useState<AnnouncementCategory>("general");
+  const [acknowledgementStatement, setAcknowledgementStatement] = useState("我已阅读并理解该制度，确认按公司制度执行。");
+  const [acknowledgementDueDate, setAcknowledgementDueDate] = useState("");
 
   const listQuery = useQuery({ queryKey: ["announcements", "manage"], queryFn: () => fetchAnnouncements(true) });
   const refresh = () => queryClient.invalidateQueries({ queryKey: ["announcements"] });
+  const isPolicy = mode === "policy";
 
   const createMutation = useMutation({
-    mutationFn: () => createAnnouncement({ title, summary, linkUrl: linkUrl || null, priority: Number(priority || 100) }),
+    mutationFn: () => createAnnouncement({
+      title,
+      summary,
+      linkUrl: linkUrl || null,
+      priority: Number(priority || 100),
+      category: mode,
+      requiresAcknowledgement: isPolicy,
+      acknowledgementStatement: isPolicy ? acknowledgementStatement.trim() : null,
+      acknowledgementDueAt: isPolicy ? toChinaEndOfDayIso(acknowledgementDueDate) : null,
+    }),
     onSuccess: async () => {
       setTitle("");
       setSummary("");
       setLinkUrl("");
       setPriority("100");
+      setMode("general");
+      setAcknowledgementStatement("我已阅读并理解该制度，确认按公司制度执行。");
+      setAcknowledgementDueDate("");
       await refresh();
       toast.success("公告已创建");
     },
+    onError: () => {
+      toast.error("公告创建失败，请检查填写内容");
+    },
   });
 
   const archiveMutation = useMutation({
@@ -45,39 +82,149 @@ export function PortalAnnouncementsPage() {
     },
   });
 
+  const handleCreate = () => {
+    if (!title.trim() || !summary.trim()) {
+      toast.error("请填写标题和摘要");
+      return;
+    }
+    if (isPolicy && !acknowledgementStatement.trim()) {
+      toast.error("制度签收公告必须填写签收声明");
+      return;
+    }
+    createMutation.mutate();
+  };
+
   return (
     <div className="space-y-6">
-      <PageHeader title="公告管理" subtitle="轻量发布公告、制度链接和 FAQ 入口。" />
-      <div className="grid gap-6 xl:grid-cols-[360px,1fr]">
-        <div className="card-std space-y-4 p-6">
-          <h3 className="text-base font-semibold text-zinc-900">新建公告</h3>
-          <div className="space-y-2"><Label>标题</Label><Input value={title} onChange={(event) => setTitle(event.target.value)} /></div>
-          <div className="space-y-2"><Label>摘要</Label><textarea className="min-h-28 w-full rounded-lg border border-zinc-300 px-3 py-2 text-sm" value={summary} onChange={(event) => setSummary(event.target.value)} /></div>
-          <div className="space-y-2"><Label>链接</Label><Input value={linkUrl} onChange={(event) => setLinkUrl(event.target.value)} /></div>
-          <div className="space-y-2"><Label>优先级</Label><Input value={priority} onChange={(event) => setPriority(event.target.value)} /></div>
-          <Button type="button" disabled={createMutation.isPending} onClick={() => createMutation.mutate()}>{createMutation.isPending ? "创建中..." : "创建公告"}</Button>
-        </div>
-        <div className="card-std space-y-4 p-6">
-          <h3 className="text-base font-semibold text-zinc-900">公告列表</h3>
-          <div className="space-y-3">
-            {(listQuery.data?.items ?? []).map((item) => (
-              <div key={item.id} className="rounded-lg border border-zinc-200 p-4">
-                <div className="flex items-start justify-between gap-3">
-                  <div>
-                    <div className="font-medium text-zinc-900">{item.title}</div>
-                    <div className="mt-1 text-sm text-zinc-600">{item.summary}</div>
-                    <div className="mt-1 text-xs text-zinc-500">priority={item.priority} · {item.enabled ? "enabled" : "disabled"}</div>
-                  </div>
-                  <div className="flex gap-2">
-                    <Button type="button" variant="secondary" onClick={() => toggleMutation.mutate({ id: item.id, enabled: !item.enabled })}>{item.enabled ? "停用" : "启用"}</Button>
-                    <Button type="button" variant="secondary" onClick={() => archiveMutation.mutate(item.id)}>归档</Button>
-                  </div>
-                </div>
+      <PageHeader title="公告管理" subtitle="发布普通公告，或创建需要全员显式确认的制度签收公告。" />
+      <div className="admin-workspace-grid xl:grid-cols-[360px,minmax(0,1fr)]">
+        <section className="admin-command-panel space-y-4 p-5">
+          <div>
+            <h2 className="text-base font-semibold text-zinc-900">新建公告</h2>
+            <p className="mt-1 text-xs leading-5 text-zinc-500">制度内容变化时请新建公告版本，不直接覆盖已签收内容。</p>
+          </div>
+
+          <div className="space-y-2">
+            <Label>公告类型</Label>
+            <Tabs value={mode} onValueChange={(value) => setMode(value as AnnouncementCategory)}>
+              <TabsList className="grid h-auto w-full grid-cols-2">
+                <TabsTrigger value="general">普通公告</TabsTrigger>
+                <TabsTrigger value="policy">制度签收</TabsTrigger>
+              </TabsList>
+            </Tabs>
+          </div>
+
+          <div className="space-y-2">
+            <Label>标题</Label>
+            <Input value={title} onChange={(event) => setTitle(event.target.value)} placeholder="例如：费用报销制度签收" />
+          </div>
+          <div className="space-y-2">
+            <Label>摘要</Label>
+            <Textarea value={summary} onChange={(event) => setSummary(event.target.value)} placeholder="写清楚适用范围、入口和处理要求。" />
+          </div>
+          <div className="space-y-2">
+            <Label>链接</Label>
+            <Input value={linkUrl} onChange={(event) => setLinkUrl(event.target.value)} placeholder="https://..." />
+          </div>
+
+          {isPolicy ? (
+            <div className="rounded-lg border border-slate-200 bg-slate-50/70 p-3.5">
+              <div className="space-y-2">
+                <Label>签收声明</Label>
+                <Textarea
+                  className="min-h-[88px]"
+                  value={acknowledgementStatement}
+                  onChange={(event) => setAcknowledgementStatement(event.target.value)}
+                />
               </div>
-            ))}
+              <div className="mt-3 space-y-2">
+                <Label>签收截止日</Label>
+                <Input type="date" value={acknowledgementDueDate} onChange={(event) => setAcknowledgementDueDate(event.target.value)} />
+                <p className="text-xs leading-5 text-zinc-500">按国内习惯，截止日当天 23:59 前均视为未逾期。</p>
+              </div>
+            </div>
+          ) : null}
+
+          <div className="space-y-2">
+            <Label>优先级</Label>
+            <Input value={priority} onChange={(event) => setPriority(event.target.value)} inputMode="numeric" />
+          </div>
+          <Button type="button" disabled={createMutation.isPending} onClick={handleCreate}>
+            {createMutation.isPending ? "创建中..." : isPolicy ? "创建制度签收公告" : "创建公告"}
+          </Button>
+        </section>
+
+        <section className="admin-command-panel space-y-4 p-5">
+          <div className="flex flex-col gap-2 md:flex-row md:items-end md:justify-between">
+            <div>
+              <h2 className="text-base font-semibold text-zinc-900">公告列表</h2>
+              <p className="mt-1 text-xs leading-5 text-zinc-500">管理员可查看制度签收统计；未签名单仅展示员工号和姓名。</p>
+            </div>
+            {listQuery.isFetching ? <span className="badge-neutral">刷新中</span> : null}
+          </div>
+
+          <div className="space-y-3">
+            {(listQuery.data?.items ?? []).map((item) => {
+              const summaryStats = item.acknowledgementSummary;
+              const pendingEmployees = item.pendingEmployees ?? [];
+              const pendingPreview = pendingEmployees.slice(0, 6);
+              return (
+                <article key={item.id} className="admin-tile-card space-y-3">
+                  <div className="flex flex-col gap-3 md:flex-row md:items-start md:justify-between">
+                    <div className="min-w-0">
+                      <div className="flex flex-wrap items-center gap-2">
+                        <h3 className="font-semibold text-zinc-900">{item.title}</h3>
+                        <span className={item.requiresAcknowledgement ? "badge-warning" : "badge-neutral"}>
+                          {acknowledgementModeLabel(item.category, item.requiresAcknowledgement)}
+                        </span>
+                        <span className={item.enabled ? "badge-success" : "badge-neutral"}>{item.enabled ? "启用" : "停用"}</span>
+                      </div>
+                      <p className="mt-2 text-sm leading-6 text-zinc-600">{item.summary}</p>
+                      <div className="mt-2 flex flex-wrap gap-2 text-xs text-zinc-500">
+                        <span>优先级 {item.priority}</span>
+                        <span>更新 {formatDisplayDateTime(item.updatedAt)}</span>
+                        {item.acknowledgementDueAt ? <span>截止 {formatDisplayDate(item.acknowledgementDueAt)}</span> : null}
+                      </div>
+                    </div>
+                    <div className="flex shrink-0 gap-2">
+                      <Button type="button" variant="secondary" size="sm" onClick={() => toggleMutation.mutate({ id: item.id, enabled: !item.enabled })}>
+                        {item.enabled ? "停用" : "启用"}
+                      </Button>
+                      <Button type="button" variant="secondary" size="sm" onClick={() => archiveMutation.mutate(item.id)}>归档</Button>
+                    </div>
+                  </div>
+
+                  {item.requiresAcknowledgement && summaryStats ? (
+                    <div className="rounded-lg border border-slate-200 bg-slate-50/70 p-3.5">
+                      <div className="grid gap-2 text-sm md:grid-cols-4">
+                        <div><span className="text-zinc-500">范围</span><div className="font-semibold text-zinc-900">{summaryStats.totalActiveEmployees} 人</div></div>
+                        <div><span className="text-zinc-500">已签</span><div className="font-semibold text-emerald-700">{summaryStats.acknowledgedCount} 人</div></div>
+                        <div><span className="text-zinc-500">待签</span><div className="font-semibold text-amber-700">{summaryStats.pendingCount} 人</div></div>
+                        <div><span className="text-zinc-500">逾期</span><div className="font-semibold text-red-700">{summaryStats.overdueCount} 人</div></div>
+                      </div>
+                      <div className="mt-3 text-xs font-semibold text-zinc-500">{formatSummary(item)}</div>
+                      {pendingPreview.length ? (
+                        <div className="mt-2 flex flex-wrap gap-2">
+                          {pendingPreview.map((employee) => (
+                            <span key={employee.id} className={employee.status === "overdue" ? "badge-error" : "badge-warning"}>
+                              {employee.employeeNo} · {employee.name}
+                            </span>
+                          ))}
+                          {pendingEmployees.length > pendingPreview.length ? (
+                            <span className="badge-neutral">另 {pendingEmployees.length - pendingPreview.length} 人</span>
+                          ) : null}
+                        </div>
+                      ) : (
+                        <div className="mt-2 text-sm text-emerald-700">当前 active 员工均已签收。</div>
+                      )}
+                    </div>
+                  ) : null}
+                </article>
+              );
+            })}
             {!listQuery.data?.items?.length ? <div className="text-sm text-zinc-500">暂无公告</div> : null}
           </div>
-        </div>
+        </section>
       </div>
     </div>
   );
diff --git a/client/tests/e2e/announcements-policy-ack.spec.ts b/client/tests/e2e/announcements-policy-ack.spec.ts
new file mode 100644
index 00000000..8211b661
--- /dev/null
+++ b/client/tests/e2e/announcements-policy-ack.spec.ts
@@ -0,0 +1,307 @@
+import { expect, test, type Page, type Route } from "@playwright/test";
+
+import { ADMIN, EMPLOYEE, login } from "./helpers/auth";
+
+type MockUserKey = "admin" | "employee";
+
+type MockAnnouncement = {
+  id: string;
+  title: string;
+  summary: string;
+  linkUrl: string | null;
+  startsAt: string | null;
+  endsAt: string | null;
+  enabled: boolean;
+  priority: number;
+  category: "general" | "policy";
+  requiresAcknowledgement: boolean;
+  acknowledgementStatement: string | null;
+  acknowledgementDueAt: string | null;
+  createdAt: string | null;
+  updatedAt: string | null;
+  acknowledgedEmployeeIds: Set<string>;
+};
+
+function envelope(data: unknown) {
+  return { requestId: "mock-policy-ack", data };
+}
+
+async function fulfillJson(route: Route, data: unknown, status = 200) {
+  await route.fulfill({
+    status,
+    contentType: "application/json",
+    body: JSON.stringify(envelope(data)),
+  });
+}
+
+function buildMe(user: MockUserKey) {
+  if (user === "admin") {
+    return {
+      id: "admin-policy-ack",
+      employeeNo: "A001",
+      name: "Admin",
+      phone: "mock-phone-admin",
+      email: "admin@example.test",
+      departmentId: "dept-admin",
+      directManagerId: null,
+      status: "active",
+      notificationPushEnabled: true,
+      roleCodes: ["admin"],
+      profileCompleteness: { hasEmergencyContact: true, hasBankAccount: true, hasAvatar: false, hasIdNumber: false, score: 60 },
+      wecomBinding: null,
+    };
+  }
+
+  return {
+    id: "employee-policy-ack",
+    employeeNo: "E001",
+    name: "Employee",
+    phone: "mock-phone-employee",
+    email: "employee@example.test",
+    departmentId: "dept-employee",
+    directManagerId: null,
+    status: "active",
+    notificationPushEnabled: true,
+    roleCodes: ["employee"],
+    profileCompleteness: { hasEmergencyContact: true, hasBankAccount: true, hasAvatar: false, hasIdNumber: false, score: 60 },
+    wecomBinding: null,
+  };
+}
+
+function mapAnnouncementForUser(item: MockAnnouncement, currentUser: MockUserKey) {
+  const me = buildMe(currentUser);
+  const acknowledged = item.acknowledgedEmployeeIds.has(me.id);
+  const overdue = Boolean(item.acknowledgementDueAt && new Date(item.acknowledgementDueAt).getTime() < Date.now());
+  return {
+    ...item,
+    acknowledgedEmployeeIds: undefined,
+    acknowledgement: {
+      status: !item.requiresAcknowledgement ? "not_required" : acknowledged ? "acknowledged" : overdue ? "overdue" : "pending",
+      acknowledgedAt: acknowledged ? "2026-05-28T03:00:00.000Z" : null,
+      overdue: !acknowledged && overdue,
+    },
+  };
+}
+
+function mapAnnouncementForAdmin(item: MockAnnouncement) {
+  const employees = [
+    { id: "employee-policy-ack", employeeNo: "E001", name: "Employee", status: "pending" },
+    { id: "employee-policy-ack-2", employeeNo: "E002", name: "员工二", status: "pending" },
+  ];
+  const pendingEmployees = item.requiresAcknowledgement
+    ? employees.filter((employee) => !item.acknowledgedEmployeeIds.has(employee.id))
+    : [];
+  return {
+    ...item,
+    acknowledgedEmployeeIds: undefined,
+    acknowledgementSummary: {
+      required: item.requiresAcknowledgement,
+      totalActiveEmployees: item.requiresAcknowledgement ? employees.length : 0,
+      acknowledgedCount: item.requiresAcknowledgement ? employees.length - pendingEmployees.length : 0,
+      pendingCount: pendingEmployees.length,
+      overdueCount: 0,
+    },
+    pendingEmployees,
+  };
+}
+
+async function mockPolicyAckApis(page: Page) {
+  let currentUser: MockUserKey = "employee";
+  const announcements: MockAnnouncement[] = [];
+
+  await page.route((url) => url.pathname.startsWith("/api/"), async (route) => {
+    const request = route.request();
+    const url = new URL(request.url());
+    const path = url.pathname;
+
+    if (path === "/api/auth/capabilities") {
+      await fulfillJson(route, {
+        emailDelivery: { ready: true, statusReasons: [] },
+        emailLoginCode: { enabled: true },
+        passwordReset: { enabled: true },
+      });
+      return;
+    }
+
+    if (path === "/api/auth/sso/providers") {
+      await fulfillJson(route, []);
+      return;
+    }
+
+    if (path === "/api/auth/wecom/config") {
+      await fulfillJson(route, { enabled: false, entryEnabled: false, oauthEnabled: false, status: "disabled", statusReasons: [] });
+      return;
+    }
+
+    if (path === "/api/auth/login") {
+      const payload = request.postDataJSON() as { identifier?: string };
+      currentUser = payload.identifier === ADMIN.identifier ? "admin" : "employee";
+      await route.fulfill({
+        status: 200,
+        contentType: "application/json",
+        headers: { "set-cookie": "has_session=1; Path=/; SameSite=Lax" },
+        body: JSON.stringify(envelope({ accessToken: `mock-policy-${currentUser}`, expiresIn: 900, mustChangePassword: false })),
+      });
+      return;
+    }
+
+    if (path === "/api/auth/refresh") {
+      await fulfillJson(route, { accessToken: `mock-policy-${currentUser}`, expiresIn: 900, mustChangePassword: false });
+      return;
+    }
+
+    if (path === "/api/me") {
+      await fulfillJson(route, buildMe(currentUser));
+      return;
+    }
+
+    if (path === "/api/system/navigation") {
+      await fulfillJson(route, {
+        workspace: {
+          id: "workspace-policy-ack",
+          persisted: true,
+          profile: "small_team_internal",
+          orgMode: "single_company",
+          primaryEntryMode: "password",
+          notificationStrategy: "in_app",
+          devicePriority: "desktop",
+          moduleVisibility: {},
+          createdAt: null,
+          updatedAt: null,
+          updatedBy: null,
+        },
+        sections: {
+          main: [{ key: "announcements", href: "/announcements", label: "公告", icon: "campaign", placement: "main", permissionCodes: [], featureFlagKey: null }],
+          admin: currentUser === "admin"
+            ? [{ key: "announcementsAdmin", href: "/system/announcements", label: "公告管理", icon: "campaign", placement: "admin", permissionCodes: ["system.settings"], featureFlagKey: null }]
+            : [],
+          backup: [],
+        },
+        recommendedRolePresets: [],
+      });
+      return;
+    }
+
+    if (path === "/api/portal/home") {
+      await fulfillJson(route, {
+        workspace: { id: "workspace-policy-ack", persisted: true, profile: "small_team_internal" },
+        greeting: { name: buildMe(currentUser).name },
+        cards: [],
+        pendingTasks: { count: 0, href: "/workflow/tasks" },
+        myApplications: [],
+        riskSummary: null,
+        announcements: [],
+        quickLinks: [],
+        todayPresence: null,
+        teamPresence: null,
+        weeklyReport: null,
+        weeklySummary: null,
+        todoSummary: null,
+        projectSummary: null,
+        peopleLifecycle: null,
+        adoptionSummary: null,
+        recentActivities: [],
+        teamStatusBoard: [],
+      });
+      return;
+    }
+
+    if (path === "/api/notifications") {
+      await fulfillJson(route, { items: [], unreadCount: 0, page: 1, pageSize: 20, total: 0 });
+      return;
+    }
+
+    if (path === "/api/announcements" && request.method() === "GET") {
+      const manage = url.searchParams.get("manage") === "1";
+      await fulfillJson(route, {
+        items: announcements.map((item) => manage ? mapAnnouncementForAdmin(item) : mapAnnouncementForUser(item, currentUser)),
+      });
+      return;
+    }
+
+    if (path === "/api/announcements" && request.method() === "POST") {
+      const payload = request.postDataJSON() as {
+        title: string;
+        summary: string;
+        linkUrl?: string | null;
+        priority?: number;
+        category?: "general" | "policy";
+        requiresAcknowledgement?: boolean;
+        acknowledgementStatement?: string | null;
+        acknowledgementDueAt?: string | null;
+      };
+      const created: MockAnnouncement = {
+        id: `policy-ann-${announcements.length + 1}`,
+        title: payload.title,
+        summary: payload.summary,
+        linkUrl: payload.linkUrl ?? null,
+        startsAt: null,
+        endsAt: null,
+        enabled: true,
+        priority: payload.priority ?? 100,
+        category: payload.category ?? "general",
+        requiresAcknowledgement: Boolean(payload.requiresAcknowledgement),
+        acknowledgementStatement: payload.acknowledgementStatement ?? null,
+        acknowledgementDueAt: payload.acknowledgementDueAt ?? null,
+        createdAt: "2026-05-28T02:00:00.000Z",
+        updatedAt: "2026-05-28T02:00:00.000Z",
+        acknowledgedEmployeeIds: new Set(),
+      };
+      announcements.push(created);
+      await fulfillJson(route, { item: mapAnnouncementForAdmin(created) }, 201);
+      return;
+    }
+
+    if (path.endsWith("/acknowledge") && request.method() === "POST") {
+      const segments = path.split("/");
+      const id = segments[segments.length - 2];
+      const announcement = announcements.find((item) => item.id === id);
+      if (announcement) {
+        announcement.acknowledgedEmployeeIds.add(buildMe(currentUser).id);
+      }
+      await fulfillJson(route, { item: { id: "ack-1", announcementId: id, status: "acknowledged", acknowledgedAt: "2026-05-28T03:00:00.000Z" } }, 201);
+      return;
+    }
+
+    await fulfillJson(route, {});
+  });
+}
+
+async function clearBrowserSession(page: Page) {
+  await page.context().clearCookies();
+  await page.evaluate(() => {
+    window.localStorage.clear();
+    window.sessionStorage.clear();
+  });
+}
+
+test("制度签收公告：管理员创建、员工签收、管理员看到统计变化", async ({ page }) => {
+  await mockPolicyAckApis(page);
+  const title = `自动化制度签收 ${Date.now()}`;
+
+  await login(page, ADMIN);
+  await page.goto("/system/announcements");
+  await page.getByRole("tab", { name: "制度签收" }).click();
+  await page.getByPlaceholder("例如：费用报销制度签收").fill(title);
+  await page.getByPlaceholder("写清楚适用范围、入口和处理要求。").fill("请全员阅读并确认制度签收流程。");
+  await page.locator('input[type="date"]').fill("2026-06-03");
+  await page.getByRole("button", { name: "创建制度签收公告" }).click();
+  await expect(page.getByText(title)).toBeVisible();
+  await expect(page.getByText("已签 0/2 · 待签 2")).toBeVisible();
+
+  await clearBrowserSession(page);
+  await login(page, EMPLOYEE);
+  await page.goto("/announcements");
+  await expect(page.getByText(title)).toBeVisible();
+  await expect(page.getByText("待签收")).toBeVisible();
+  await page.getByLabel("我已阅读并理解该制度内容，确认按公司制度执行。").check();
+  await page.getByRole("button", { name: "确认签收" }).click();
+  await expect(page.getByText("已签收")).toBeVisible();
+  await expect(page.getByText(/完成本人签收/)).toBeVisible();
+
+  await clearBrowserSession(page);
+  await login(page, ADMIN);
+  await page.goto("/system/announcements");
+  await expect(page.getByText(title)).toBeVisible();
+  await expect(page.getByText("已签 1/2 · 待签 1")).toBeVisible();
+});
diff --git a/docs/员工快速上手.md b/docs/员工快速上手.md
index 6787faa8..15241025 100644
--- a/docs/员工快速上手.md
+++ b/docs/员工快速上手.md
@@ -104,7 +104,8 @@
 - 如果管理员要求你补交付记录、合同归档位置或交接说明，请优先在海音达工作台里补齐，不要只在群里回复“已处理”。
 
 ## 15. 制度签收和资料留存
-- 管理员发布或更新涉及员工利益、费用、保密、资产、权限或档案的制度时，你需要按要求完成纸面或电子制度签收；只看到公告不等于已经完成正式签收。
+- 管理员发布或更新涉及员工利益、费用、保密、资产、权限或档案的制度时，你需要按要求完成纸面或电子制度签收；如果 OA 公告页显示“待签收”或“已逾期”，需要勾选签收声明并点击“确认签收”。
+- 只看到普通公告、打开公告链接或阅读制度材料，不等于已经完成正式签收；完成后公告页会显示“已签收”和签收时间。
 - 资料留存先按“小团队 V1”执行：OA 中写清编号、摘要、负责人、项目或合同关联、归档位置摘要和必要证明；涉密正文、敏感报价、成本细节、银行流水原件、账号凭据、Secret、完整配置和完整本地路径不要上传。
 - 用印相关事项先在合同台账或管理员指定台账中留痕，至少说明事项、文件版本、份数、审批状态、日期、责任人和归档位置。
 - 遇到审批异常、权限异常、资料误传、付款/AP 卡住或无法导出时，按“阻断 / 非阻断 / 建议”告诉管理员，并提供页面、步骤和影响，不要发送密码、完整票面、银行回单或敏感报价截图。
diff --git a/docs/管理员手册.md b/docs/管理员手册.md
index 46f69568..5c247dbd 100644
--- a/docs/管理员手册.md
+++ b/docs/管理员手册.md
@@ -451,7 +451,7 @@ ASSET1 后，资产模块统一承载固定资产和电子资产索引，不再
 
 账号资产 `EA-ACC` V1 暂缓。离职交接时检查“此人是否持有关键系统权限”，不在 OA 维护每个普通账号资产卡，也不保存任何密码或密钥。
 
-历史资料导入只允许从 `/home/shunli/Projects/faculty-daily-assistant/公司/00_保密索引` 读取脱敏索引，默认 dry-run。公网写入需要 `ASSET_INDEX_IMPORT_WRITE=1` 和单独确认；报告不得输出 S3/S4 原文、完整路径、Secret、token、银行流水原件或未脱敏票面。
+历史资料导入只允许从管理员指定的公司资料脱敏索引目录读取，默认 dry-run。公网写入需要 `ASSET_INDEX_IMPORT_WRITE=1` 和单独确认；报告不得输出 S3/S4 原文、完整路径、Secret、token、银行流水原件或未脱敏票面。
 
 阻断判定：
 
@@ -516,7 +516,7 @@ OPOLICY1 是正式启用前的制度收口层。它不新增一套业务流程
 | 资料留存 | OA 只放可控摘要、hash、归档位置摘要、非涉密证明和审计线索；涉密正文、敏感报价、成本细节、银行流水原件和凭据继续线下或专用工具保管 | 资料不清楚时不上传，只登记待归档 |
 | 用印台账 | V1 先通过合同台账的摘要、归档位置、离线档案号和附件审计承载用印记录；至少记录事项、文件版本、份数、审批状态、日期、责任人和归档位置 | 现有字段无法说明时，先用人工台账补充，后续再立项做专用字段 |
 | 审批异常 SOP | 无审批人、自审、越权可见、付款/AP 卡住、合同或资料敏感信息误上传均视为阻断 | 当天建修复合同、人工绕行留风险，或暂停对应流程 |
-| 制度签收 | 员工利益相关制度先保留纸面或电子签收证据；OA 公告可发布制度通知，但不把公告阅读等同于正式签收 | 缺签收时不进入最终 Go/No-Go |
+| 制度签收 | OA 公告管理可创建“制度签收”公告，员工必须勾选声明并点击签收；系统保存本人签收时间、声明快照和审计记录 | 缺签收或缺外部签收证据时不进入最终 Go/No-Go |
 | P2 冻结 | 复杂预算、复杂招采、电子签章、完整档案系统、ERP、银行流水导入、真实支付直连和 AI 写规则继续冻结 | 真实使用证明必要后另建 Trellis task |
 
 制度参数人工问答建议：
@@ -525,7 +525,7 @@ OPOLICY1 是正式启用前的制度收口层。它不新增一套业务流程
 - B：暂不填固定金额阈值，所有预算外、合同、用印和高风险事项逐单管理层审批。
 - C：暂停财务、合同或采购真实启用，先把制度参数定稿。
 
-当前 OA 对齐判断：合同台账已有敏感级别、归档位置和离线档案号，资产台账已有 `FA/EA-DOC/EA-SYS/EA-REPO/EA-BKP` 元数据能力，公告模块可承载制度通知。因此 V1 不立即做 Prisma schema 迁移；如果真实使用证明“用印台账专用字段”或“制度签收回执”是阻断，再另建功能合同并进入 reviewer。
+当前 OA 对齐判断：合同台账已有敏感级别、归档位置和离线档案号，资产台账已有 `FA/EA-DOC/EA-SYS/EA-REPO/EA-BKP` 元数据能力，公告模块已支持轻量制度签收回执。用印台账专用字段仍不作为正式启用前置；如果真实使用证明该字段是阻断，再另建功能合同并进入 reviewer。
 
 ## 4. 人员生命周期管理
 ### 4.1 入职
@@ -564,6 +564,8 @@ OPOLICY1 是正式启用前的制度收口层。它不新增一套业务流程
 
 ## 7. 公告与 Portal 使用建议
 - 公告只发公司级通知、制度更新、假期提醒，不做复杂 CMS。
+- 涉及员工利益、费用、保密、资产、权限或档案的制度，优先在 `系统设置 -> 公告管理` 创建“制度签收”公告，填写签收声明和截止日；已有人签收后如制度内容变化，应新建公告版本，不直接改旧公告标题、摘要或声明。
+- 管理员可在公告管理页查看全员 active 员工的已签、待签、逾期统计和最小必要未签名单；不得把手机号、邮箱、企业微信 userid 或敏感资料导出到公告签收证据里。
 - `Portal` 首屏建议重点看：
   - 今日团队状态
   - 未提交周报人数
diff --git a/server/prisma/migrations/20260528113000_policy_acknowledgements/migration.sql b/server/prisma/migrations/20260528113000_policy_acknowledgements/migration.sql
new file mode 100644
index 00000000..7cce1590
--- /dev/null
+++ b/server/prisma/migrations/20260528113000_policy_acknowledgements/migration.sql
@@ -0,0 +1,43 @@
+ALTER TABLE "portal_announcements"
+  ADD COLUMN "category" TEXT NOT NULL DEFAULT 'general',
+  ADD COLUMN "requires_acknowledgement" BOOLEAN NOT NULL DEFAULT false,
+  ADD COLUMN "acknowledgement_statement" TEXT,
+  ADD COLUMN "acknowledgement_due_at" TIMESTAMP(3);
+
+CREATE TABLE "portal_announcement_acknowledgements" (
+    "id" UUID NOT NULL,
+    "announcement_id" UUID NOT NULL,
+    "employee_id" UUID NOT NULL,
+    "acknowledged_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "statement_snapshot" TEXT NOT NULL,
+    "title_snapshot" TEXT NOT NULL,
+    "summary_snapshot" TEXT NOT NULL,
+    "actor_id" UUID NOT NULL,
+    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "portal_announcement_acknowledgements_pkey" PRIMARY KEY ("id")
+);
+
+CREATE UNIQUE INDEX "portal_announcement_acknowledgements_announcement_id_employee_id_key"
+    ON "portal_announcement_acknowledgements"("announcement_id", "employee_id");
+
+CREATE INDEX "portal_announcement_acknowledgements_employee_id_acknowledged_at_idx"
+    ON "portal_announcement_acknowledgements"("employee_id", "acknowledged_at");
+
+CREATE INDEX "portal_announcement_acknowledgements_announcement_id_acknowledged_at_idx"
+    ON "portal_announcement_acknowledgements"("announcement_id", "acknowledged_at");
+
+ALTER TABLE "portal_announcement_acknowledgements"
+    ADD CONSTRAINT "portal_announcement_acknowledgements_announcement_id_fkey"
+    FOREIGN KEY ("announcement_id") REFERENCES "portal_announcements"("id")
+    ON DELETE CASCADE ON UPDATE CASCADE;
+
+ALTER TABLE "portal_announcement_acknowledgements"
+    ADD CONSTRAINT "portal_announcement_acknowledgements_employee_id_fkey"
+    FOREIGN KEY ("employee_id") REFERENCES "employees"("id")
+    ON DELETE RESTRICT ON UPDATE CASCADE;
+
+ALTER TABLE "portal_announcement_acknowledgements"
+    ADD CONSTRAINT "portal_announcement_acknowledgements_actor_id_fkey"
+    FOREIGN KEY ("actor_id") REFERENCES "employees"("id")
+    ON DELETE RESTRICT ON UPDATE CASCADE;
diff --git a/server/prisma/schema.prisma b/server/prisma/schema.prisma
index dee349bb..ccc107c1 100644
--- a/server/prisma/schema.prisma
+++ b/server/prisma/schema.prisma
@@ -683,6 +683,8 @@ model Employee {
   email_login_codes                    EmailLoginCode[]
   lifecycle_events                     EmployeeLifecycleEvent[]
   checklist_tasks                      EmployeeChecklistTask[]
+  portal_announcement_acknowledgements PortalAnnouncementAcknowledgement[] @relation("PortalAnnouncementAcknowledgementEmployee")
+  portal_announcement_acknowledgement_actions PortalAnnouncementAcknowledgement[] @relation("PortalAnnouncementAcknowledgementActor")
   presence_records                     EmployeePresence[]
   attendance_records                   AttendanceRecord[]
   weekly_reports                       WeeklyReport[]
@@ -1876,24 +1878,51 @@ model PaymentBatchReceiptAttachment {
 }
 
 model PortalAnnouncement {
-  id        String    @id @default(uuid()) @db.Uuid
-  title     String
-  summary   String
-  link_url  String?
-  starts_at DateTime?
-  ends_at   DateTime?
-  enabled   Boolean   @default(true)
-  priority  Int       @default(100)
+  id                         String    @id @default(uuid()) @db.Uuid
+  title                      String
+  summary                    String
+  link_url                   String?
+  starts_at                  DateTime?
+  ends_at                    DateTime?
+  enabled                    Boolean   @default(true)
+  priority                   Int       @default(100)
+  category                   String    @default("general")
+  requires_acknowledgement   Boolean   @default(false)
+  acknowledgement_statement  String?
+  acknowledgement_due_at     DateTime?
 
   created_at DateTime @default(now())
   created_by String?  @db.Uuid
   updated_at DateTime @default(now()) @updatedAt
   updated_by String?  @db.Uuid
 
+  acknowledgements PortalAnnouncementAcknowledgement[]
+
   @@index([enabled, priority, starts_at, ends_at], map: "idx_portal_announcements_enabled_priority")
   @@map("portal_announcements")
 }
 
+model PortalAnnouncementAcknowledgement {
+  id                 String   @id @default(uuid()) @db.Uuid
+  announcement_id    String   @db.Uuid
+  employee_id        String   @db.Uuid
+  acknowledged_at    DateTime @default(now())
+  statement_snapshot String
+  title_snapshot     String
+  summary_snapshot   String
+  actor_id           String   @db.Uuid
+  created_at         DateTime @default(now())
+
+  announcement PortalAnnouncement @relation(fields: [announcement_id], references: [id], onDelete: Cascade)
+  employee     Employee           @relation("PortalAnnouncementAcknowledgementEmployee", fields: [employee_id], references: [id], onDelete: Restrict)
+  actor        Employee           @relation("PortalAnnouncementAcknowledgementActor", fields: [actor_id], references: [id], onDelete: Restrict)
+
+  @@unique([announcement_id, employee_id])
+  @@index([employee_id, acknowledged_at])
+  @@index([announcement_id, acknowledged_at])
+  @@map("portal_announcement_acknowledgements")
+}
+
 model WorkspaceSetting {
   id                     String                        @id @default(uuid()) @db.Uuid
   profile                WorkspaceProfile              @default(small_team_internal)
diff --git a/server/src/routes/announcements.js b/server/src/routes/announcements.js
index 9c33bc66..eda39963 100644
--- a/server/src/routes/announcements.js
+++ b/server/src/routes/announcements.js
@@ -16,12 +16,21 @@ const WRITE_SCHEMA = z.object({
   endsAt: DATE_TIME_SCHEMA.nullable().optional(),
   enabled: z.boolean().optional(),
   priority: z.coerce.number().int().min(1).max(9999).optional(),
+  category: z.enum(["general", "policy"]).optional(),
+  requiresAcknowledgement: z.boolean().optional(),
+  acknowledgementStatement: z.string().trim().min(1).max(300).nullable().optional(),
+  acknowledgementDueAt: DATE_TIME_SCHEMA.nullable().optional(),
 }).strict();
 const PATCH_SCHEMA = WRITE_SCHEMA.partial().refine((value) => Object.keys(value).length > 0, { message: "empty_patch" });
+const ACKNOWLEDGE_SCHEMA = z.object({ confirmed: z.literal(true) }).strict();
+const ACKNOWLEDGEMENT_PROTECTED_FIELDS = new Set(["title", "summary", "category", "requiresAcknowledgement", "acknowledgementStatement"]);
 
 function buildValidationError(details, statusCode = 400) {
   return new AppError({ code: "VALID_001", message: "参数校验失败", statusCode, details });
 }
+function buildNotFoundError(details = {}) {
+  return new AppError({ code: "ANN_404", message: "公告不存在或不可见", statusCode: 404, details });
+}
 function parseId(value) {
   const parsed = UUID_SCHEMA.safeParse(value);
   if (!parsed.success) throw buildValidationError({ id: "invalid_uuid" });
@@ -38,7 +47,97 @@ async function ensureFeatureEnabled(fastify) {
     throw buildValidationError({ featureFlag: "announcements_v1_disabled", reason: gate.reason }, 409);
   }
 }
-function mapItem(item) {
+function normalizeAnnouncementPolicyFields(body, current = null) {
+  let requiresAcknowledgement = current?.requires_acknowledgement ?? false;
+  if (body.category === "policy") {
+    requiresAcknowledgement = true;
+  } else if (body.category === "general") {
+    requiresAcknowledgement = false;
+  }
+  if (body.requiresAcknowledgement !== undefined) {
+    requiresAcknowledgement = body.requiresAcknowledgement;
+  }
+
+  const acknowledgementStatement = body.acknowledgementStatement !== undefined
+    ? body.acknowledgementStatement?.trim() || null
+    : current?.acknowledgement_statement ?? null;
+  const acknowledgementDueAt = body.acknowledgementDueAt !== undefined
+    ? (body.acknowledgementDueAt ? new Date(body.acknowledgementDueAt) : null)
+    : current?.acknowledgement_due_at ?? null;
+
+  if (requiresAcknowledgement && !acknowledgementStatement) {
+    throw buildValidationError({ acknowledgementStatement: "required_for_policy_acknowledgement" });
+  }
+
+  return {
+    category: requiresAcknowledgement ? "policy" : "general",
+    requires_acknowledgement: requiresAcknowledgement,
+    acknowledgement_statement: requiresAcknowledgement ? acknowledgementStatement : null,
+    acknowledgement_due_at: requiresAcknowledgement ? acknowledgementDueAt : null,
+  };
+}
+function hasAcknowledgementProtectedPatch(body) {
+  return Object.keys(body).some((key) => ACKNOWLEDGEMENT_PROTECTED_FIELDS.has(key));
+}
+function isVisibleAnnouncement(item, now = new Date()) {
+  return Boolean(
+    item?.enabled &&
+    (!item.starts_at || item.starts_at <= now) &&
+    (!item.ends_at || item.ends_at >= now),
+  );
+}
+function buildUserAcknowledgement(item, now) {
+  if (!item.requires_acknowledgement) {
+    return { status: "not_required", acknowledgedAt: null, overdue: false };
+  }
+  const acknowledgement = item.acknowledgements?.[0] ?? null;
+  if (acknowledgement) {
+    return {
+      status: "acknowledged",
+      acknowledgedAt: acknowledgement.acknowledged_at?.toISOString?.() ?? null,
+      overdue: false,
+    };
+  }
+  const overdue = Boolean(item.acknowledgement_due_at && item.acknowledgement_due_at < now);
+  return { status: overdue ? "overdue" : "pending", acknowledgedAt: null, overdue };
+}
+function buildManageAcknowledgement(item, activeEmployees, now) {
+  if (!item.requires_acknowledgement) {
+    return {
+      summary: {
+        required: false,
+        totalActiveEmployees: activeEmployees.length,
+        acknowledgedCount: 0,
+        pendingCount: 0,
+        overdueCount: 0,
+      },
+      pendingEmployees: [],
+    };
+  }
+
+  const acknowledgedEmployeeIds = new Set((item.acknowledgements ?? []).map((acknowledgement) => acknowledgement.employee_id));
+  const pendingEmployees = activeEmployees
+    .filter((employee) => !acknowledgedEmployeeIds.has(employee.id))
+    .map((employee) => ({
+      id: employee.id,
+      employeeNo: employee.employee_no,
+      name: employee.name,
+      status: item.acknowledgement_due_at && item.acknowledgement_due_at < now ? "overdue" : "pending",
+    }));
+  const overdueCount = item.acknowledgement_due_at && item.acknowledgement_due_at < now ? pendingEmployees.length : 0;
+
+  return {
+    summary: {
+      required: true,
+      totalActiveEmployees: activeEmployees.length,
+      acknowledgedCount: activeEmployees.length - pendingEmployees.length,
+      pendingCount: pendingEmployees.length,
+      overdueCount,
+    },
+    pendingEmployees,
+  };
+}
+function mapItem(item, { activeEmployees = [], isManage = false, now = new Date() } = {}) {
   return {
     id: item.id,
     title: item.title,
@@ -48,6 +147,19 @@ function mapItem(item) {
     endsAt: item.ends_at?.toISOString?.() ?? null,
     enabled: item.enabled,
     priority: item.priority,
+    category: item.category ?? "general",
+    requiresAcknowledgement: Boolean(item.requires_acknowledgement),
+    acknowledgementStatement: item.acknowledgement_statement ?? null,
+    acknowledgementDueAt: item.acknowledgement_due_at?.toISOString?.() ?? null,
+    ...(isManage
+      ? (() => {
+          const result = buildManageAcknowledgement(item, activeEmployees, now);
+          return {
+            acknowledgementSummary: result.summary,
+            pendingEmployees: result.pendingEmployees,
+          };
+        })()
+      : { acknowledgement: buildUserAcknowledgement(item, now) }),
     createdAt: item.created_at?.toISOString?.() ?? null,
     updatedAt: item.updated_at?.toISOString?.() ?? null,
   };
@@ -59,24 +171,42 @@ async function announcementsRoutes(fastify) {
     if (!queryParsed.success) throw buildValidationError(queryParsed.error.flatten());
     const query = queryParsed.data;
     const isManage = query.manage === "1" || query.manage === "true";
+    if (isManage) {
+      fastify.assertPermission(request.employee, "system.settings");
+    }
     const now = new Date();
-    const where = isManage && fastify.hasPermission(request.employee, "system.settings")
+    const where = isManage
       ? {}
       : {
           enabled: true,
           OR: [{ starts_at: null }, { starts_at: { lte: now } }],
           AND: [{ OR: [{ ends_at: null }, { ends_at: { gte: now } }] }],
         };
-    const items = await fastify.prisma.portalAnnouncement.findMany({
-      where,
-      orderBy: [{ priority: "asc" }, { created_at: "desc" }],
-    });
-    return sendData(reply, request, { items: items.map(mapItem) });
+    const [items, activeEmployees] = await Promise.all([
+      fastify.prisma.portalAnnouncement.findMany({
+        where,
+        orderBy: [{ priority: "asc" }, { created_at: "desc" }],
+        include: {
+          acknowledgements: isManage
+            ? { select: { employee_id: true, acknowledged_at: true } }
+            : { where: { employee_id: request.employee.id }, select: { employee_id: true, acknowledged_at: true } },
+        },
+      }),
+      isManage
+        ? fastify.prisma.employee.findMany({
+            where: { status: "active" },
+            select: { id: true, employee_no: true, name: true },
+            orderBy: [{ employee_no: "asc" }, { name: "asc" }],
+          })
+        : Promise.resolve([]),
+    ]);
+    return sendData(reply, request, { items: items.map((item) => mapItem(item, { activeEmployees, isManage, now })) });
   });
 
   fastify.post("/announcements", { preHandler: fastify.requirePermission("system.settings") }, async (request, reply) => {
     await ensureFeatureEnabled(fastify);
     const body = parseBody(WRITE_SCHEMA, request.body);
+    const policyFields = normalizeAnnouncementPolicyFields(body);
     const created = await fastify.prisma.portalAnnouncement.create({
       data: {
         title: body.title,
@@ -86,18 +216,40 @@ async function announcementsRoutes(fastify) {
         ends_at: body.endsAt ? new Date(body.endsAt) : null,
         enabled: body.enabled ?? true,
         priority: body.priority ?? 100,
+        ...policyFields,
         created_by: request.employee.id,
         updated_by: request.employee.id,
       },
     });
-    await fastify.prisma.auditLog.create({ data: buildAuditLogData(request, { actorId: request.employee.id, action: "PORTAL_ANNOUNCEMENT_CREATED", targetType: "portal_announcement", targetId: created.id }) });
-    return reply.code(201).send({ requestId: request.id, data: { item: mapItem(created) } });
+    await fastify.prisma.auditLog.create({
+      data: buildAuditLogData(request, {
+        actorId: request.employee.id,
+        action: "PORTAL_ANNOUNCEMENT_CREATED",
+        targetType: "portal_announcement",
+        targetId: created.id,
+        extra: { requiresAcknowledgement: created.requires_acknowledgement },
+      }),
+    });
+    return reply.code(201).send({ requestId: request.id, data: { item: mapItem(created, { isManage: true }) } });
   });
 
   fastify.patch("/announcements/:id", { preHandler: fastify.requirePermission("system.settings") }, async (request, reply) => {
     await ensureFeatureEnabled(fastify);
     const announcementId = parseId(request.params?.id);
     const body = parseBody(PATCH_SCHEMA, request.body);
+    const current = await fastify.prisma.portalAnnouncement.findUnique({ where: { id: announcementId } });
+    if (!current) throw buildNotFoundError({ id: "not_found" });
+
+    if (hasAcknowledgementProtectedPatch(body)) {
+      const acknowledgementCount = await fastify.prisma.portalAnnouncementAcknowledgement.count({
+        where: { announcement_id: announcementId },
+      });
+      if (acknowledgementCount > 0) {
+        throw buildValidationError({ acknowledgement: "create_new_version_after_acknowledgement" }, 409);
+      }
+    }
+
+    const policyFields = normalizeAnnouncementPolicyFields(body, current);
     const updated = await fastify.prisma.portalAnnouncement.update({
       where: { id: announcementId },
       data: {
@@ -108,10 +260,11 @@ async function announcementsRoutes(fastify) {
         ...(body.endsAt !== undefined ? { ends_at: body.endsAt ? new Date(body.endsAt) : null } : {}),
         ...(body.enabled !== undefined ? { enabled: body.enabled } : {}),
         ...(body.priority !== undefined ? { priority: body.priority } : {}),
+        ...policyFields,
         updated_by: request.employee.id,
       },
     });
-    return sendData(reply, request, { item: mapItem(updated) });
+    return sendData(reply, request, { item: mapItem(updated, { isManage: true }) });
   });
 
   fastify.post("/announcements/:id/archive", { preHandler: fastify.requirePermission("system.settings") }, async (request, reply) => {
@@ -121,7 +274,96 @@ async function announcementsRoutes(fastify) {
       where: { id: announcementId },
       data: { enabled: false, ends_at: new Date(), updated_by: request.employee.id },
     });
-    return sendData(reply, request, { item: mapItem(updated) });
+    return sendData(reply, request, { item: mapItem(updated, { isManage: true }) });
+  });
+
+  fastify.post("/announcements/:id/acknowledge", { preHandler: fastify.authenticate }, async (request, reply) => {
+    await ensureFeatureEnabled(fastify);
+    const announcementId = parseId(request.params?.id);
+    parseBody(ACKNOWLEDGE_SCHEMA, request.body);
+
+    const now = new Date();
+    const announcement = await fastify.prisma.portalAnnouncement.findUnique({
+      where: { id: announcementId },
+      include: {
+        acknowledgements: {
+          where: { employee_id: request.employee.id },
+          select: { id: true, acknowledged_at: true },
+        },
+      },
+    });
+    if (!announcement || !isVisibleAnnouncement(announcement, now)) {
+      throw buildNotFoundError({ id: "not_found_or_not_visible" });
+    }
+    if (!announcement.requires_acknowledgement) {
+      throw buildValidationError({ acknowledgement: "not_required" }, 409);
+    }
+    if (!announcement.acknowledgement_statement) {
+      throw buildValidationError({ acknowledgementStatement: "missing_for_policy_acknowledgement" }, 409);
+    }
+
+    const existing = announcement.acknowledgements?.[0] ?? null;
+    if (existing) {
+      return sendData(reply, request, {
+        item: {
+          id: existing.id,
+          announcementId: announcement.id,
+          status: "acknowledged",
+          acknowledgedAt: existing.acknowledged_at?.toISOString?.() ?? null,
+        },
+      });
+    }
+
+    try {
+      const acknowledgement = await fastify.prisma.$transaction(async (tx) => {
+        const created = await tx.portalAnnouncementAcknowledgement.create({
+          data: {
+            announcement_id: announcement.id,
+            employee_id: request.employee.id,
+            statement_snapshot: announcement.acknowledgement_statement,
+            title_snapshot: announcement.title,
+            summary_snapshot: announcement.summary,
+            actor_id: request.employee.id,
+          },
+        });
+        await tx.auditLog.create({
+          data: buildAuditLogData(request, {
+            actorId: request.employee.id,
+            action: "PORTAL_ANNOUNCEMENT_ACKNOWLEDGED",
+            targetType: "portal_announcement_acknowledgement",
+            targetId: created.id,
+            extra: { announcementId: announcement.id },
+          }),
+        });
+        return created;
+      });
+
+      return reply.code(201).send({
+        requestId: request.id,
+        data: {
+          item: {
+            id: acknowledgement.id,
+            announcementId: announcement.id,
+            status: "acknowledged",
+            acknowledgedAt: acknowledgement.acknowledged_at?.toISOString?.() ?? null,
+          },
+        },
+      });
+    } catch (error) {
+      if (error?.code !== "P2002") throw error;
+      const acknowledgement = await fastify.prisma.portalAnnouncementAcknowledgement.findUnique({
+        where: { announcement_id_employee_id: { announcement_id: announcement.id, employee_id: request.employee.id } },
+        select: { id: true, acknowledged_at: true },
+      });
+      return sendData(reply, request, {
+        item: {
+          id: acknowledgement?.id ?? null,
+          announcementId: announcement.id,
+          status: "acknowledged",
+          acknowledgedAt: acknowledgement?.acknowledged_at?.toISOString?.() ?? null,
+        },
+      });
+    }
   });
 }
 module.exports = announcementsRoutes;
diff --git a/server/tests/unit/routes/announcements.test.js b/server/tests/unit/routes/announcements.test.js
new file mode 100644
index 00000000..9b315343
--- /dev/null
+++ b/server/tests/unit/routes/announcements.test.js
@@ -0,0 +1,420 @@
+const Fastify = require("fastify");
+
+const { AppError } = require("../../../src/utils/AppError");
+
+const featureFlagState = vi.hoisted(() => ({ enabled: true }));
+
+vi.mock("../../../src/services/featureFlags", () => ({
+  FEATURE_FLAG_KEYS: { announcements: "announcements_v1" },
+  evaluateFeatureFlag: vi.fn(async () => ({
+    enabled: featureFlagState.enabled,
+    reason: featureFlagState.enabled ? "mock_on" : "mock_off",
+  })),
+}));
+
+const announcementsRoutes = require("../../../src/routes/announcements");
+
+const ADMIN_ID = "00000000-0000-4000-8000-000000000001";
+const EMPLOYEE_ID = "00000000-0000-4000-8000-000000000002";
+const EMPLOYEE_2_ID = "00000000-0000-4000-8000-000000000003";
+const INACTIVE_EMPLOYEE_ID = "00000000-0000-4000-8000-000000000004";
+const POLICY_ID = "10000000-0000-4000-8000-000000000001";
+const GENERAL_ID = "10000000-0000-4000-8000-000000000002";
+const HIDDEN_ID = "10000000-0000-4000-8000-000000000003";
+
+function buildEmployee(overrides = {}) {
+  return {
+    id: EMPLOYEE_ID,
+    employee_no: "E001",
+    name: "员工一",
+    status: "active",
+    permissionCodes: ["expense.view_own"],
+    ...overrides,
+  };
+}
+
+function buildAnnouncement(overrides = {}) {
+  const now = new Date("2026-05-28T02:00:00.000Z");
+  return {
+    id: POLICY_ID,
+    title: "费用制度签收",
+    summary: "请确认费用制度 V1。",
+    link_url: null,
+    starts_at: null,
+    ends_at: null,
+    enabled: true,
+    priority: 10,
+    category: "policy",
+    requires_acknowledgement: true,
+    acknowledgement_statement: "我已阅读并理解该制度。",
+    acknowledgement_due_at: new Date("2026-06-01T15:59:59.000Z"),
+    created_at: now,
+    created_by: ADMIN_ID,
+    updated_at: now,
+    updated_by: ADMIN_ID,
+    ...overrides,
+  };
+}
+
+function cloneWithInclude(item, include, acknowledgements) {
+  const row = { ...item };
+  if (include?.acknowledgements) {
+    let rows = acknowledgements.filter((acknowledgement) => acknowledgement.announcement_id === item.id);
+    if (include.acknowledgements.where?.employee_id) {
+      rows = rows.filter((acknowledgement) => acknowledgement.employee_id === include.acknowledgements.where.employee_id);
+    }
+    row.acknowledgements = rows.map((acknowledgement) => ({
+      id: acknowledgement.id,
+      employee_id: acknowledgement.employee_id,
+      acknowledged_at: acknowledgement.acknowledged_at,
+    }));
+  }
+  return row;
+}
+
+function matchAnnouncementWhere(item, where = {}) {
+  if (where.enabled !== undefined && item.enabled !== where.enabled) {
+    return false;
+  }
+  const now = new Date("2026-05-28T02:00:00.000Z");
+  if (where.OR && item.starts_at && item.starts_at > now) {
+    return false;
+  }
+  if (where.AND && item.ends_at && item.ends_at < now) {
+    return false;
+  }
+  return true;
+}
+
+function createPrismaState(options = {}) {
+  const employees = options.employees ?? [
+    buildEmployee({ id: EMPLOYEE_ID, employee_no: "E001", name: "员工一" }),
+    buildEmployee({ id: EMPLOYEE_2_ID, employee_no: "E002", name: "员工二" }),
+    buildEmployee({ id: INACTIVE_EMPLOYEE_ID, employee_no: "E003", name: "离职员工", status: "archived" }),
+  ];
+  const announcements = options.announcements ?? [
+    buildAnnouncement(),
+    buildAnnouncement({
+      id: GENERAL_ID,
+      title: "普通公告",
+      summary: "无需签收。",
+      category: "general",
+      requires_acknowledgement: false,
+      acknowledgement_statement: null,
+      acknowledgement_due_at: null,
+      priority: 20,
+    }),
+    buildAnnouncement({
+      id: HIDDEN_ID,
+      title: "未来公告",
+      starts_at: new Date("2026-06-01T00:00:00.000Z"),
+    }),
+  ];
+  const acknowledgements = options.acknowledgements ?? [];
+  const auditLogs = [];
+
+  const portalAnnouncement = {
+    findMany: vi.fn(async ({ where, include }) =>
+      announcements
+        .filter((item) => matchAnnouncementWhere(item, where))
+        .sort((left, right) => left.priority - right.priority || right.created_at.getTime() - left.created_at.getTime())
+        .map((item) => cloneWithInclude(item, include, acknowledgements)),
+    ),
+    findUnique: vi.fn(async ({ where, include }) => {
+      const item = announcements.find((announcement) => announcement.id === where.id);
+      return item ? cloneWithInclude(item, include, acknowledgements) : null;
+    }),
+    create: vi.fn(async ({ data }) => {
+      const created = buildAnnouncement({
+        ...data,
+        id: `10000000-0000-4000-8000-${String(announcements.length + 10).padStart(12, "0")}`,
+        link_url: data.link_url ?? null,
+        starts_at: data.starts_at ?? null,
+        ends_at: data.ends_at ?? null,
+        created_at: new Date("2026-05-28T02:00:00.000Z"),
+        updated_at: new Date("2026-05-28T02:00:00.000Z"),
+      });
+      announcements.push(created);
+      return created;
+    }),
+    update: vi.fn(async ({ where, data }) => {
+      const index = announcements.findIndex((announcement) => announcement.id === where.id);
+      if (index < 0) {
+        throw new Error("not_found");
+      }
+      announcements[index] = { ...announcements[index], ...data, updated_at: new Date("2026-05-28T03:00:00.000Z") };
+      return announcements[index];
+    }),
+  };
+
+  const portalAnnouncementAcknowledgement = {
+    count: vi.fn(async ({ where }) =>
+      acknowledgements.filter((acknowledgement) => acknowledgement.announcement_id === where.announcement_id).length,
+    ),
+    create: vi.fn(async ({ data }) => {
+      const duplicated = acknowledgements.find(
+        (acknowledgement) =>
+          acknowledgement.announcement_id === data.announcement_id &&
+          acknowledgement.employee_id === data.employee_id,
+      );
+      if (duplicated) {
+        const error = new Error("duplicate_acknowledgement");
+        error.code = "P2002";
+        throw error;
+      }
+      const created = {
+        id: `20000000-0000-4000-8000-${String(acknowledgements.length + 1).padStart(12, "0")}`,
+        acknowledged_at: new Date("2026-05-28T02:30:00.000Z"),
+        created_at: new Date("2026-05-28T02:30:00.000Z"),
+        ...data,
+      };
+      acknowledgements.push(created);
+      return created;
+    }),
+    findUnique: vi.fn(async ({ where }) => {
+      const compound = where.announcement_id_employee_id;
+      if (!compound) return null;
+      return acknowledgements.find(
+        (acknowledgement) =>
+          acknowledgement.announcement_id === compound.announcement_id &&
+          acknowledgement.employee_id === compound.employee_id,
+      ) ?? null;
+    }),
+  };
+
+  const auditLog = {
+    create: vi.fn(async ({ data }) => {
+      auditLogs.push(data);
+      return { id: `audit-${auditLogs.length}`, ...data };
+    }),
+  };
+
+  const prisma = {
+    portalAnnouncement,
+    portalAnnouncementAcknowledgement,
+    employee: {
+      findMany: vi.fn(async ({ where }) => employees.filter((employee) => employee.status === where.status)),
+    },
+    auditLog,
+    featureFlag: {
+      findUnique: vi.fn(async () => ({
+        id: "flag-announcements",
+        flag_key: "announcements_v1",
+        override_mode: "force_on",
+        rollout_type: "global",
+        department_ids: [],
+        note: "",
+        version: 1,
+        created_at: new Date("2026-05-28T00:00:00.000Z"),
+        created_by: null,
+        updated_at: new Date("2026-05-28T00:00:00.000Z"),
+        updated_by: null,
+      })),
+    },
+    $transaction: vi.fn(async (callback) => callback({ portalAnnouncementAcknowledgement, auditLog })),
+  };
+
+  return { prisma, employees, announcements, acknowledgements, auditLogs };
+}
+
+async function buildApp(options = {}) {
+  const state = createPrismaState(options);
+  const actor = options.actor ?? buildEmployee({ id: EMPLOYEE_ID, permissionCodes: ["expense.view_own"] });
+  const app = Fastify({ logger: false });
+
+  app.decorate("config", { announcementsEnabled: true });
+  app.decorate("prisma", state.prisma);
+  app.decorate("hasPermission", (employee, permissionCode) => (employee?.permissionCodes ?? []).includes(permissionCode));
+  app.decorate("assertPermission", (employee, permissionCode) => {
+    if (!app.hasPermission(employee, permissionCode)) {
+      throw new AppError({
+        code: "PERM_001",
+        message: "无权限",
+        statusCode: 403,
+        details: { permission: permissionCode },
+      });
+    }
+  });
+  app.decorate("authenticate", async (request) => {
+    request.employee = actor;
+  });
+  app.decorate("requirePermission", (permissionCode) => async (request) => {
+    await app.authenticate(request);
+    app.assertPermission(request.employee, permissionCode);
+  });
+  app.setErrorHandler((error, request, reply) => {
+    if (error instanceof AppError) {
+      return reply.status(error.statusCode).send({
+        requestId: request.id,
+        error: { code: error.code, message: error.message, details: error.details },
+      });
+    }
+    return reply.status(500).send({ requestId: request.id, error: { code: "SYS_001", message: error.message, details: {} } });
+  });
+  await app.register(announcementsRoutes, { prefix: "/api" });
+  return { app, state };
+}
+
+beforeEach(() => {
+  featureFlagState.enabled = true;
+});
+
+describe("announcements policy acknowledgement routes", () => {
+  it("rejects policy acknowledgement announcement without statement", async () => {
+    const { app } = await buildApp({
+      actor: buildEmployee({ id: ADMIN_ID, permissionCodes: ["system.settings"] }),
+    });
+
+    const response = await app.inject({
+      method: "POST",
+      url: "/api/announcements",
+      payload: {
+        title: "制度公告",
+        summary: "缺少签收声明。",
+        category: "policy",
+      },
+    });
+
+    expect(response.statusCode).toBe(400);
+    expect(response.json().error.details.acknowledgementStatement).toBe("required_for_policy_acknowledgement");
+    await app.close();
+  });
+
+  it("returns only current employee acknowledgement status for normal list", async () => {
+    const { app } = await buildApp();
+
+    const response = await app.inject({ method: "GET", url: "/api/announcements" });
+
+    expect(response.statusCode).toBe(200);
+    const item = response.json().data.items.find((announcement) => announcement.id === POLICY_ID);
+    expect(item.acknowledgement).toMatchObject({ status: "pending", acknowledgedAt: null, overdue: false });
+    expect(item.acknowledgementSummary).toBeUndefined();
+    expect(item.pendingEmployees).toBeUndefined();
+    await app.close();
+  });
+
+  it("creates acknowledgement once and writes audit log idempotently", async () => {
+    const { app, state } = await buildApp();
+
+    const first = await app.inject({
+      method: "POST",
+      url: `/api/announcements/${POLICY_ID}/acknowledge`,
+      payload: { confirmed: true },
+    });
+    const second = await app.inject({
+      method: "POST",
+      url: `/api/announcements/${POLICY_ID}/acknowledge`,
+      payload: { confirmed: true },
+    });
+
+    expect(first.statusCode).toBe(201);
+    expect(second.statusCode).toBe(200);
+    expect(state.acknowledgements).toHaveLength(1);
+    expect(state.acknowledgements[0]).toMatchObject({
+      announcement_id: POLICY_ID,
+      employee_id: EMPLOYEE_ID,
+      statement_snapshot: "我已阅读并理解该制度。",
+      title_snapshot: "费用制度签收",
+    });
+    expect(state.auditLogs).toHaveLength(1);
+    expect(state.auditLogs[0]).toMatchObject({
+      action: "PORTAL_ANNOUNCEMENT_ACKNOWLEDGED",
+      target_type: "portal_announcement_acknowledgement",
+    });
+    await app.close();
+  });
+
+  it("rejects acknowledgement for general or invisible announcements", async () => {
+    const { app } = await buildApp();
+
+    const general = await app.inject({
+      method: "POST",
+      url: `/api/announcements/${GENERAL_ID}/acknowledge`,
+      payload: { confirmed: true },
+    });
+    const hidden = await app.inject({
+      method: "POST",
+      url: `/api/announcements/${HIDDEN_ID}/acknowledge`,
+      payload: { confirmed: true },
+    });
+
+    expect(general.statusCode).toBe(409);
+    expect(general.json().error.details.acknowledgement).toBe("not_required");
+    expect(hidden.statusCode).toBe(404);
+    await app.close();
+  });
+
+  it("returns admin acknowledgement summary and minimal pending employees only", async () => {
+    const { app } = await buildApp({
+      actor: buildEmployee({ id: ADMIN_ID, permissionCodes: ["system.settings"] }),
+      acknowledgements: [
+        {
+          id: "20000000-0000-4000-8000-000000000099",
+          announcement_id: POLICY_ID,
+          employee_id: EMPLOYEE_ID,
+          actor_id: EMPLOYEE_ID,
+          acknowledged_at: new Date("2026-05-28T01:00:00.000Z"),
+          statement_snapshot: "我已阅读并理解该制度。",
+          title_snapshot: "费用制度签收",
+          summary_snapshot: "请确认费用制度 V1。",
+          created_at: new Date("2026-05-28T01:00:00.000Z"),
+        },
+      ],
+    });
+
+    const response = await app.inject({ method: "GET", url: "/api/announcements?manage=1" });
+
+    expect(response.statusCode).toBe(200);
+    const item = response.json().data.items.find((announcement) => announcement.id === POLICY_ID);
+    expect(item.acknowledgementSummary).toMatchObject({
+      required: true,
+      totalActiveEmployees: 2,
+      acknowledgedCount: 1,
+      pendingCount: 1,
+      overdueCount: 0,
+    });
+    expect(item.pendingEmployees).toEqual([
+      { id: EMPLOYEE_2_ID, employeeNo: "E002", name: "员工二", status: "pending" },
+    ]);
+    expect(JSON.stringify(item.pendingEmployees)).not.toMatch(/phone|email|wecom/i);
+    await app.close();
+  });
+
+  it("denies manage query for employee without system settings permission", async () => {
+    const { app } = await buildApp();
+
+    const response = await app.inject({ method: "GET", url: "/api/announcements?manage=1" });
+
+    expect(response.statusCode).toBe(403);
+    await app.close();
+  });
+
+  it("rejects protected policy content edits after acknowledgement exists", async () => {
+    const { app } = await buildApp({
+      actor: buildEmployee({ id: ADMIN_ID, permissionCodes: ["system.settings"] }),
+      acknowledgements: [
+        {
+          id: "20000000-0000-4000-8000-000000000099",
+          announcement_id: POLICY_ID,
+          employee_id: EMPLOYEE_ID,
+          actor_id: EMPLOYEE_ID,
+          acknowledged_at: new Date("2026-05-28T01:00:00.000Z"),
+          statement_snapshot: "我已阅读并理解该制度。",
+          title_snapshot: "费用制度签收",
+          summary_snapshot: "请确认费用制度 V1。",
+          created_at: new Date("2026-05-28T01:00:00.000Z"),
+        },
+      ],
+    });
+
+    const response = await app.inject({
+      method: "PATCH",
+      url: `/api/announcements/${POLICY_ID}`,
+      payload: { title: "费用制度签收 V2" },
+    });
+
+    expect(response.statusCode).toBe(409);
+    expect(response.json().error.details.acknowledgement).toBe("create_new_version_after_acknowledgement");
+    await app.close();
+  });
+});