feat(ai): Agent 分析 Tool — AnalyzeLabReport + AnalyzeHealthTrends

- AnalyzeLabReportTool: 获取化验报告详细指标（异常标记+参考范围）
- AnalyzeHealthTrendsTool: 趋势分析（回归方向/日变化/异常检测）
- 沙箱: MedicalStaff 专属分析 Tool，Patient 不可用

crates/erp-ai/src/handler/chat_handler.rs

@@ -7,6 +7,8 @@ use serde::{Deserialize, Serialize};
 use crate::agent::orchestrator::AgentRunParams;
 use crate::agent::sandbox::{get_sandbox_config, resolve_role};
 use crate::agent::tool::ToolContext;
+use crate::agent::tools::AnalyzeHealthTrendsTool;
+use crate::agent::tools::AnalyzeLabReportTool;
 use crate::agent::tools::QueryPatientProfileTool;
 use crate::agent::tools::QueryPatientVitalsTool;
 use crate::agent::tools::SearchMedicalKnowledgeTool;
@@ -125,6 +127,8 @@ where
     registry.register(std::sync::Arc::new(QueryMedicationsTool));
     registry.register(std::sync::Arc::new(SearchMedicalKnowledgeTool));
     registry.register(std::sync::Arc::new(QueryPatientProfileTool));
+    registry.register(std::sync::Arc::new(AnalyzeLabReportTool));
+    registry.register(std::sync::Arc::new(AnalyzeHealthTrendsTool));
 
     // 根据用户角色获取沙箱配置
     let user_role = resolve_role(&ctx.roles);