fix(web,miniprogram): 端到端测试修复 + 小程序接口字段对齐

## 前端修复
- 修复 9 个 TypeScript 编译错误（未使用变量/undefined 守卫/vitest 类型）
- 重写 E2E auth fixture 使用真实 API 登录替代 mock token
- 更新 E2E 测试选择器适配当前 UI 布局
- Playwright 改为串行执行避免 token 唯一约束冲突
- E2E 测试从 0/10 通过提升到 10/10 通过

## 小程序接口一致性修复（P0-P3）
- P0: consultation.ts type→consultation_type, unread_count→unread_count_patient
- P0: followup.ts task_type→follow_up_type, due_date→planned_date, description→content_template
- P1: appointment.ts calendarView 展平嵌套结构, available_count 计算 max-current
- P1: doctor.ts HealthSummary 适配后台实际返回结构
- P2: doctor.ts PatientStats/ConsultationStats/FollowUpStats 字段名对齐
- P3: article.ts 新增 buildCategoryTree 工具函数

apps/miniprogram/src/services/appointment.ts

@@ -25,6 +25,8 @@ export interface DoctorSchedule {
   date: string;
   start_time: string;
   end_time: string;
+  max_appointments: number;
+  current_appointments: number;
   available_count: number;
 }
 
@@ -60,12 +62,17 @@ export async function cancelAppointment(id: string, version: number) {
 }
 
 export async function getDoctorSchedules(doctorId: string, startDate: string, endDate: string) {
-  return api.get<{ data: DoctorSchedule[]; total: number }>('/health/doctor-schedules', {
+  const resp = await api.get<{ data: DoctorSchedule[]; total: number }>('/health/doctor-schedules', {
     doctor_id: doctorId,
     start_date: startDate,
     end_date: endDate,
     page_size: 50,
   });
+  // 计算可用号源数
+  for (const s of resp.data) {
+    s.available_count = s.available_count ?? (s.max_appointments - s.current_appointments);
+  }
+  return resp;
 }
 
 export async function listDoctors(department?: string) {
@@ -76,9 +83,24 @@ export async function listDoctors(department?: string) {
 }
 
 export async function calendarView(startDate: string, endDate: string, doctorId?: string) {
-  return api.get<DoctorSchedule[]>('/health/doctor-schedules/calendar', {
-    start_date: startDate,
-    end_date: endDate,
-    ...(doctorId && { doctor_id: doctorId }),
-  });
+  const raw = await api.get<{ date: string; schedules: DoctorSchedule[] }[]>(
+    '/health/doctor-schedules/calendar',
+    {
+      start_date: startDate,
+      end_date: endDate,
+      ...(doctorId && { doctor_id: doctorId }),
+    },
+  );
+  // 后台返回按日期分组的嵌套结构，展平为扁平数组并计算 available_count
+  const flat: DoctorSchedule[] = [];
+  for (const day of (raw as unknown as { date: string; schedules: DoctorSchedule[] }[])) {
+    for (const s of day.schedules) {
+      flat.push({
+        ...s,
+        date: s.date || day.date,
+        available_count: s.available_count ?? (s.max_appointments - s.current_appointments),
+      });
+    }
+  }
+  return flat;
 }