feat: 初始化项目结构并添加核心功能模块

- 新增文档模板和导航结构
- 实现服务器基础API路由和控制器
- 添加扩展插件配置和前端框架
- 引入多租户和权限管理模块
- 集成日志和数据库配置
- 添加核心业务模型和类型定义

server/src/services/CongestionFailoverService.ts

@@ -0,0 +1,54 @@
+import db from '../config/database';
+import { AuditService } from './AuditService';
+import { AIService } from './AIService';
+
+/**
+ * [BIZ_TRADE_18] 全球物流拥堵预测与自适应绕路建议
+ * 负责预测关键枢纽（如苏伊士运河、洛杉矶港等）的拥堵，并为受影响订单自动生成绕路建议
+ */
+export class CongestionFailoverService {
+  /**
+   * 分析拥堵并提供建议
+   */
+  static async analyzeAndReroute(tenantId: string, nodeId: string, traceId: string): Promise<void> {
+    // 1. 获取该节点的实时拥堵度 (模拟调用 AI 流量感知服务)
+    const congestionLevel = await AIService.getNodeCongestion(nodeId);
+    
+    // 2. 只有在严重拥堵 (Level > 0.8) 时触发
+    if (congestionLevel > 0.8) {
+      const rerouteAdvice = await AIService.generateRerouteAdvice(nodeId);
+      const delayReduction = rerouteAdvice.estimatedDelayReduction;
+
+      await db.transaction(async (trx) => {
+        // 记录建议
+        const [id] = await trx('cf_congestion_failover').insert({
+          tenant_id: tenantId,
+          node_id: nodeId,
+          congestion_level: congestionLevel,
+          reroute_advice: rerouteAdvice.description,
+          estimated_delay_reduction: delayReduction
+        });
+
+        // 审计记录
+        await AuditService.log({
+          tenant_id: tenantId,
+          action: 'LOGISTICS_CONGESTION_REROUTE',
+          target_type: 'LOGISTICS_ROUTE',
+          target_id: nodeId,
+          trace_id: traceId,
+          new_data: JSON.stringify({ congestionLevel, delayReduction }),
+          metadata: JSON.stringify({ rerouteAdvice: rerouteAdvice.description })
+        });
+      });
+    }
+  }
+
+  /**
+   * 获取租户所有拥堵绕路记录
+   */
+  static async getHistory(tenantId: string) {
+    return await db('cf_congestion_failover')
+      .where({ tenant_id: tenantId })
+      .orderBy('created_at', 'desc');
+  }
+}