feat(ai): Phase 2A-3 随访页 AI 辅助生成小结 — SSE 端点 + 前端集成

- AnalysisType 新增 FollowUpSummary 变体（as_str/prompt_name）
- HealthDataProvider 新增 get_follow_up_summary_data() + FollowUpSummaryDataDto
- erp-health 实现随访数据查询（task + records + PII 解密）
- 新增 /ai/analyze/follow-up-summary SSE 端点
- SanitizationService 新增 sanitize_follow_up_data()
- 前端 analysisSse.ts/AiAnalysisCard 支持 follow-up-summary 类型
- FollowUpTaskList 操作列新增「AI 小结」按钮

crates/erp-core/src/health_provider.rs

@@ -61,6 +61,13 @@ pub trait HealthDataProvider: Send + Sync {
         patient_id: Uuid,
         limit: u64,
     ) -> AppResult<Vec<LabReportListItemDto>>;
+
+    /// 获取随访摘要数据（任务 + 已有记录，用于 AI 生成小结）
+    async fn get_follow_up_summary_data(
+        &self,
+        tenant_id: Uuid,
+        task_id: Uuid,
+    ) -> AppResult<FollowUpSummaryDataDto>;
 }
 
 // === DTO 定义 ===
@@ -200,3 +207,22 @@ pub struct LabReportListItemDto {
     pub report_date: String,
     pub abnormal_count: usize,
 }
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct FollowUpSummaryDataDto {
+    pub task_id: Uuid,
+    pub patient_id: Uuid,
+    pub follow_up_type: String,
+    pub planned_date: String,
+    pub task_status: String,
+    pub records: Vec<FollowUpRecordDto>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct FollowUpRecordDto {
+    pub executed_date: String,
+    pub result: String,
+    pub patient_condition: Option<String>,
+    pub medical_advice: Option<String>,
+    pub next_follow_up_date: Option<String>,
+}