feat(web): 药物记录 Web UI — Phase 2a-3

新增药物记录管理前端页面，接入后端 4 条孤立路由：
- API 模块: medicationRecords.ts（CRUD + 频次/途径常量）
- 列表页: MedicationRecordList.tsx（患者 ID 查询 + 药物列表 CRUD）
  支持药品名/通用名/剂量/频次/途径/日期/在用状态
- 路由注册: /health/medications

权限: health.medication-records.list / health.medication-records.manage

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

@@ -0,0 +1,111 @@
+import client from '../client';
+import type { PaginatedResponse } from '../types';
+
+// --- Types ---
+
+export interface MedicationRecord {
+  id: string;
+  patient_id: string;
+  medication_name: string;
+  generic_name?: string;
+  dosage?: string;
+  unit?: string;
+  frequency?: string;
+  route?: string;
+  start_date?: string;
+  end_date?: string;
+  is_current: boolean;
+  prescribed_by?: string;
+  notes?: string;
+  created_at: string;
+  updated_at: string;
+  version: number;
+}
+
+export interface CreateMedicationRecordReq {
+  patient_id: string;
+  medication_name: string;
+  generic_name?: string;
+  dosage?: string;
+  unit?: string;
+  frequency?: string;
+  route?: string;
+  start_date?: string;
+  end_date?: string;
+  is_current?: boolean;
+  prescribed_by?: string;
+  notes?: string;
+}
+
+export interface UpdateMedicationRecordReq {
+  medication_name?: string;
+  generic_name?: string;
+  dosage?: string;
+  unit?: string;
+  frequency?: string;
+  route?: string;
+  start_date?: string;
+  end_date?: string;
+  is_current?: boolean;
+  prescribed_by?: string;
+  notes?: string;
+}
+
+// --- Constants ---
+
+export const FREQUENCY_OPTIONS = [
+  { label: '每日一次', value: 'QD' },
+  { label: '每日两次', value: 'BID' },
+  { label: '每日三次', value: 'TID' },
+  { label: '每晚一次', value: 'QN' },
+  { label: '每周一次', value: 'QW' },
+  { label: '必要时', value: 'PRN' },
+];
+
+export const ROUTE_OPTIONS = [
+  { label: '口服', value: 'oral' },
+  { label: '静脉注射', value: 'iv' },
+  { label: '皮下注射', value: 'sc' },
+  { label: '外用', value: 'topical' },
+  { label: '吸入', value: 'inhalation' },
+];
+
+// --- API ---
+
+export const medicationRecordApi = {
+  list: async (patientId: string, params?: { page?: number; page_size?: number }) => {
+    const { data } = await client.get<{
+      success: boolean;
+      data: PaginatedResponse<MedicationRecord>;
+    }>(`/health/patients/${patientId}/medications`, { params });
+    return data.data;
+  },
+
+  get: async (id: string) => {
+    const { data } = await client.get<{
+      success: boolean;
+      data: MedicationRecord;
+    }>(`/health/medications/${id}`);
+    return data.data;
+  },
+
+  create: async (req: CreateMedicationRecordReq) => {
+    const { data } = await client.post<{
+      success: boolean;
+      data: MedicationRecord;
+    }>('/health/medications', req);
+    return data.data;
+  },
+
+  update: async (id: string, req: UpdateMedicationRecordReq & { version: number }) => {
+    const { data } = await client.put<{
+      success: boolean;
+      data: MedicationRecord;
+    }>(`/health/medications/${id}`, req);
+    return data.data;
+  },
+
+  delete: async (id: string, version: number) => {
+    await client.delete(`/health/medications/${id}`, { data: { version } });
+  },
+};