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/GlobalCSMonitor.ts

@@ -0,0 +1,51 @@
+import db from '../config/database';
+import { logger } from '../utils/logger';
+import { DecisionExplainabilityEngine } from '../core/ai/DecisionExplainabilityEngine';
+
+/**
+ * [BIZ_OPS_150] 多语言客服响应极性偏移监控 (Sentiment)
+ * @description 核心逻辑：监控跨语言（如德语、法语、日语）客服对话的情感极性，识别因文化差异或翻译不准导致的客户不满风险。
+ */
+export class GlobalCSMonitor {
+  /**
+   * 监控情感偏移 (BIZ_OPS_150)
+   */
+  static async monitorSentimentDrift(tenantId: string, ticketId: string): Promise<any> {
+    logger.info(`[CSMonitor] Monitoring sentiment for Ticket: ${ticketId}, Tenant: ${tenantId}`);
+
+    try {
+      // 1. 模拟获取对话情感得分
+      // 假设检测到德语客服回复后，客户情感分从 0.6 降至 0.2
+      const sentimentTrend = [0.6, 0.55, 0.21]; 
+      const currentSentiment = sentimentTrend[sentimentTrend.length - 1];
+
+      // 2. 极性偏移识别
+      if (currentSentiment < 0.3) {
+        const advice = `CRITICAL SENTIMENT DRIFT: Ticket ${ticketId} shows sharp negative sentiment shift. ` +
+          `Potential cultural misunderstanding or translation error detected in non-English communication. ` +
+          `Suggesting immediate supervisor takeover.`;
+
+        // 3. [UX_XAI_01] 记录决策证据链
+        await DecisionExplainabilityEngine.logDecision({
+          tenantId,
+          module: 'CUSTOMER_SUCCESS_GOVERNANCE',
+          resourceId: ticketId,
+          decisionType: 'SENTIMENT_DRIFT_WARNING',
+          causalChain: advice,
+          factors: [
+            { name: 'CurrentSentiment', value: currentSentiment, weight: 0.8, impact: 'NEGATIVE' },
+            { name: 'SentimentDelta', value: sentimentTrend[0] - currentSentiment, weight: 0.2, impact: 'NEGATIVE' }
+          ],
+          traceId: 'cs-monitor-' + Date.now()
+        });
+
+        return { success: true, riskLevel: 'CRITICAL', currentSentiment, advice, status: 'PENDING_REVIEW' };
+      }
+
+      return { success: true, riskLevel: 'LOW', currentSentiment };
+    } catch (err: any) {
+      logger.error(`[CSMonitor][WARN] Monitoring failed: ${err.message}`);
+      return { success: false, error: err.message };
+    }
+  }
+}