feat(web): 班次管理 Web UI — Phase 2a-2

新增班次管理前端页面，接入后端 12 条孤立路由：
- API 模块: shifts.ts（班次 CRUD + 患者分配 + 批量分配 + 交接日志）
- 列表页: ShiftList.tsx（日期/班次/状态筛选 + 统计概览）
- 详情页: ShiftDetail.tsx（班次信息 + 患者分配 Tab + 交接记录 Tab）
- 路由注册: /health/shifts + /health/shifts/:id

权限: health.shifts.list / health.shifts.manage

apps/web/src/api/health/shifts.ts

@@ -0,0 +1,247 @@
+import client from '../client';
+import type { PaginatedResponse } from '../types';
+
+// --- Types ---
+
+export interface Shift {
+  id: string;
+  tenant_id: string;
+  shift_date: string;
+  period: string;
+  nurse_id?: string;
+  status: string;
+  notes?: string;
+  created_at: string;
+  updated_at: string;
+  version: number;
+  patient_count?: number;
+  critical_count?: number;
+  attention_count?: number;
+}
+
+export interface PatientAssignment {
+  id: string;
+  tenant_id: string;
+  shift_id: string;
+  patient_id: string;
+  care_level: string;
+  notes?: string;
+  created_at: string;
+  updated_at: string;
+  version: number;
+  patient_name?: string;
+}
+
+export interface HandoffLog {
+  id: string;
+  tenant_id: string;
+  from_shift_id: string;
+  to_shift_id: string;
+  patient_id: string;
+  notes?: string;
+  pending_items?: Record<string, unknown>;
+  created_at: string;
+  updated_at: string;
+  version: number;
+  patient_name?: string;
+}
+
+export interface CreateShiftReq {
+  shift_date: string;
+  period: string;
+  nurse_id?: string;
+  notes?: string;
+}
+
+export interface UpdateShiftReq {
+  shift_date?: string;
+  period?: string;
+  nurse_id?: string;
+  status?: string;
+  notes?: string;
+}
+
+export interface ListShiftsParams {
+  page?: number;
+  page_size?: number;
+  shift_date?: string;
+  period?: string;
+  nurse_id?: string;
+  status?: string;
+}
+
+export interface CreatePatientAssignmentReq {
+  patient_id: string;
+  care_level?: string;
+  notes?: string;
+}
+
+export interface BatchAssignReq {
+  patient_ids: string[];
+  care_level?: string;
+}
+
+export interface UpdatePatientAssignmentReq {
+  care_level?: string;
+  notes?: string;
+}
+
+export interface CreateHandoffReq {
+  from_shift_id: string;
+  to_shift_id: string;
+  patient_id: string;
+  notes?: string;
+  pending_items?: Record<string, unknown>;
+}
+
+export interface ListHandoffParams {
+  page?: number;
+  page_size?: number;
+  from_shift_id?: string;
+  to_shift_id?: string;
+}
+
+// --- Constants ---
+
+export const PERIOD_OPTIONS = [
+  { label: '上午班', value: 'morning' },
+  { label: '下午班', value: 'afternoon' },
+  { label: '晚班', value: 'evening' },
+  { label: '夜班', value: 'night' },
+];
+
+export const SHIFT_STATUS_OPTIONS = [
+  { label: '待开始', value: 'scheduled' },
+  { label: '进行中', value: 'in_progress' },
+  { label: '已完成', value: 'completed' },
+  { label: '已取消', value: 'cancelled' },
+];
+
+export const CARE_LEVEL_OPTIONS = [
+  { label: '稳定', value: 'stable' },
+  { label: '需关注', value: 'attention' },
+  { label: '危重', value: 'critical' },
+];
+
+export const PERIOD_LABEL: Record<string, string> = Object.fromEntries(
+  PERIOD_OPTIONS.map((o) => [o.value, o.label]),
+);
+
+export const SHIFT_STATUS_LABEL: Record<string, string> = Object.fromEntries(
+  SHIFT_STATUS_OPTIONS.map((o) => [o.value, o.label]),
+);
+
+export const SHIFT_STATUS_COLOR: Record<string, string> = {
+  scheduled: 'default',
+  in_progress: 'processing',
+  completed: 'success',
+  cancelled: 'error',
+};
+
+export const CARE_LEVEL_LABEL: Record<string, string> = Object.fromEntries(
+  CARE_LEVEL_OPTIONS.map((o) => [o.value, o.label]),
+);
+
+export const CARE_LEVEL_COLOR: Record<string, string> = {
+  stable: 'green',
+  attention: 'orange',
+  critical: 'red',
+};
+
+// --- API ---
+
+export const shiftApi = {
+  // --- Shifts ---
+
+  list: async (params: ListShiftsParams) => {
+    const { data } = await client.get<{
+      success: boolean;
+      data: PaginatedResponse<Shift>;
+    }>('/health/shifts', { params });
+    return data.data;
+  },
+
+  get: async (shiftId: string) => {
+    const { data } = await client.get<{
+      success: boolean;
+      data: Shift;
+    }>(`/health/shifts/${shiftId}`);
+    return data.data;
+  },
+
+  create: async (req: CreateShiftReq) => {
+    const { data } = await client.post<{
+      success: boolean;
+      data: Shift;
+    }>('/health/shifts', req);
+    return data.data;
+  },
+
+  update: async (shiftId: string, req: UpdateShiftReq & { version: number }) => {
+    const { data } = await client.put<{
+      success: boolean;
+      data: Shift;
+    }>(`/health/shifts/${shiftId}`, req);
+    return data.data;
+  },
+
+  delete: async (shiftId: string, version: number) => {
+    await client.delete(`/health/shifts/${shiftId}`, { data: { version } });
+  },
+
+  // --- Assignments ---
+
+  listAssignments: async (shiftId: string, params?: { page?: number; page_size?: number }) => {
+    const { data } = await client.get<{
+      success: boolean;
+      data: PaginatedResponse<PatientAssignment>;
+    }>(`/health/shifts/${shiftId}/assignments`, { params });
+    return data.data;
+  },
+
+  createAssignment: async (shiftId: string, req: CreatePatientAssignmentReq) => {
+    const { data } = await client.post<{
+      success: boolean;
+      data: PatientAssignment;
+    }>(`/health/shifts/${shiftId}/assignments`, req);
+    return data.data;
+  },
+
+  batchAssign: async (shiftId: string, req: BatchAssignReq) => {
+    const { data } = await client.post<{
+      success: boolean;
+      data: PatientAssignment[];
+    }>(`/health/shifts/${shiftId}/assignments/batch`, req);
+    return data.data;
+  },
+
+  updateAssignment: async (shiftId: string, assignmentId: string, req: UpdatePatientAssignmentReq & { version: number }) => {
+    const { data } = await client.put<{
+      success: boolean;
+      data: PatientAssignment;
+    }>(`/health/shifts/${shiftId}/assignments/${assignmentId}`, req);
+    return data.data;
+  },
+
+  deleteAssignment: async (shiftId: string, assignmentId: string, version: number) => {
+    await client.delete(`/health/shifts/${shiftId}/assignments/${assignmentId}`, { data: { version } });
+  },
+
+  // --- Handoff Logs ---
+
+  listHandoffs: async (params?: ListHandoffParams) => {
+    const { data } = await client.get<{
+      success: boolean;
+      data: PaginatedResponse<HandoffLog>;
+    }>('/health/handoff-logs', { params });
+    return data.data;
+  },
+
+  createHandoff: async (req: CreateHandoffReq) => {
+    const { data } = await client.post<{
+      success: boolean;
+      data: HandoffLog;
+    }>('/health/handoff-logs', req);
+    return data.data;
+  },
+};