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-ai/src/dto/mod.rs

@@ -19,6 +19,7 @@ pub enum AnalysisType {
     Trends,
     CheckupPlan,
     ReportSummary,
+    FollowUpSummary,
 }
 
 impl AnalysisType {
@@ -28,6 +29,7 @@ impl AnalysisType {
             Self::Trends => "trend",
             Self::CheckupPlan => "checkup_plan",
             Self::ReportSummary => "report_summary",
+            Self::FollowUpSummary => "follow_up_summary",
         }
     }
 
@@ -37,6 +39,7 @@ impl AnalysisType {
             Self::Trends => "health_trend_analysis",
             Self::CheckupPlan => "personalized_checkup_plan",
             Self::ReportSummary => "report_summary_generation",
+            Self::FollowUpSummary => "follow_up_summary_generation",
         }
     }
 }
@@ -161,6 +164,7 @@ mod tests {
         assert_eq!(AnalysisType::Trends.as_str(), "trend");
         assert_eq!(AnalysisType::CheckupPlan.as_str(), "checkup_plan");
         assert_eq!(AnalysisType::ReportSummary.as_str(), "report_summary");
+        assert_eq!(AnalysisType::FollowUpSummary.as_str(), "follow_up_summary");
     }
 
     // ---- AnalysisType::prompt_name ----
@@ -180,6 +184,10 @@ mod tests {
             AnalysisType::ReportSummary.prompt_name(),
             "report_summary_generation"
         );
+        assert_eq!(
+            AnalysisType::FollowUpSummary.prompt_name(),
+            "follow_up_summary_generation"
+        );
     }
 
     // ---- AnalysisType serde round-trip ----
@@ -191,6 +199,7 @@ mod tests {
             AnalysisType::Trends,
             AnalysisType::CheckupPlan,
             AnalysisType::ReportSummary,
+            AnalysisType::FollowUpSummary,
         ];
         for t in types {
             let json = serde_json::to_string(&t).unwrap();