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/ConfidentialSharingService.ts

@@ -0,0 +1,91 @@
+import db from '../config/database';
+import { AuditService } from './AuditService';
+import { AIService } from './AIService';
+
+/**
+ * [BIZ_FIN_21] 跨租户机密利润共享对账 (Confidential Profit Sharing)
+ * 负责在租户间（如联合集采、交叉分销）进行利润共享，利用同态加密技术在不暴露明文利润的情况下完成对账
+ */
+export class ConfidentialSharingService {
+  /**
+   * 提交机密利润数据并请求对账
+   */
+  static async submitConfidentialProfit(
+    tenantId: string, 
+    partnerTenantId: string, 
+    profitAmount: number, 
+    sharingRatio: number,
+    traceId: string
+  ): Promise<void> {
+    // 1. 同态加密利润数据 (模拟加密过程)
+    const encryptedData = `HE-ENC-${profitAmount * 1.5}-${Math.random().toString(36).substring(7)}`;
+    const settlementProof = 'PROOF-' + Math.random().toString(36).substring(7).toUpperCase();
+
+    await db.transaction(async (trx) => {
+      // 2. 记录机密对账单
+      const [id] = await trx('cf_confidential_sharing').insert({
+        tenant_id: tenantId,
+        partner_tenant_id: partnerTenantId,
+        encrypted_profit_data: encryptedData,
+        sharing_ratio: sharingRatio,
+        settlement_proof: settlementProof
+      });
+
+      // 3. 审计记录
+      await AuditService.log({
+        tenant_id: tenantId,
+        action: 'CONFIDENTIAL_PROFIT_SUBMITTED',
+        target_type: 'FINANCE_SHARING',
+        target_id: id.toString(),
+        trace_id: traceId,
+        new_data: JSON.stringify({ partnerTenantId, sharingRatio }),
+        metadata: JSON.stringify({ settlementProof })
+      });
+    });
+  }
+
+  /**
+   * 执行机密对账结算 (BIZ_FIN_21)
+   */
+  static async executeConfidentialSettlement(
+    sharingId: number, 
+    tenantId: string, 
+    traceId: string
+  ): Promise<number> {
+    const record = await db('cf_confidential_sharing').where({ id: sharingId }).first();
+    if (!record) throw new Error('Sharing record not found');
+
+    // 1. 利用 AGI 节点进行同态计算 (模拟在不解密的情况下计算应分利润)
+    const calculatedShare = await AIService.calculateConfidentialShare(record.encrypted_profit_data, record.sharing_ratio);
+
+    await db.transaction(async (trx) => {
+      // 2. 更新结算证明
+      await trx('cf_confidential_sharing').where({ id: sharingId }).update({
+        updated_at: db.fn.now()
+      });
+
+      // 3. 审计记录
+      await AuditService.log({
+        tenant_id: tenantId,
+        action: 'CONFIDENTIAL_SETTLEMENT_COMPLETED',
+        target_type: 'FINANCE_SHARING',
+        target_id: sharingId.toString(),
+        trace_id: traceId,
+        new_data: JSON.stringify({ calculatedShare }),
+        metadata: JSON.stringify({ sharingId })
+      });
+    });
+
+    return calculatedShare;
+  }
+
+  /**
+   * 获取租户所有机密共享历史
+   */
+  static async getSharingHistory(tenantId: string) {
+    return await db('cf_confidential_sharing')
+      .where({ tenant_id: tenantId })
+      .orWhere({ partner_tenant_id: tenantId })
+      .orderBy('created_at', 'desc');
+  }
+}