chore: initialize Next.js project baseline

app/(app)/app/notices/page.tsx

@@ -0,0 +1,21 @@
+import { Bell } from "lucide-react";
+
+import { ModulePage } from "@/modules/shared/components/ModulePage";
+
+export default function NoticesPage(): React.ReactElement {
+  return (
+    <ModulePage
+      title="公告通知"
+      eyebrow="公告发布与阅读状态"
+      description="按角色和范围发布公告，区分草稿、发布、未读和已读状态。"
+      icon={Bell}
+      phase="一期"
+      metrics={[
+        { label: "已发布公告", value: "18", detail: "本月面向全员 5 条" },
+        { label: "未读消息", value: "64", detail: "护理人员未读占比最高" },
+        { label: "草稿", value: "3", detail: "草稿不会对目标用户可见" },
+      ]}
+      workflows={["创建公告草稿", "选择目标角色与范围", "发布通知", "跟踪阅读状态"]}
+    />
+  );
+}