feat(nac-ai-compliance): 初始化AI合规审批系统模块

- 创建七层合规验证框架（compliance_layer.rs）
- 定义合规层级：身份验证、资产真实性、法律合规、财务合规、税务合规、ESG合规、持续监控
- 定义合规状态、风险等级、问题严重程度枚举
- 添加完整的文档注释和单元测试

nac-ai-compliance/Cargo.toml

@@ -0,0 +1,33 @@
+[package]
+name = "nac-ai-compliance"
+version = "0.1.0"
+edition = "2021"
+authors = ["NAC Team"]
+description = "NAC AI合规审批系统 - 基于AI的多层合规验证"
+
+[dependencies]
+# 异步运行时
+tokio = { version = "1.49", features = ["full"] }
+
+# 序列化
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+
+# 高精度数值计算
+rust_decimal = { version = "1.37", features = ["serde"] }
+
+# 错误处理
+anyhow = "1.0"
+thiserror = "2.0"
+
+# 日期时间
+chrono = { version = "0.4", features = ["serde"] }
+
+# 日志
+log = "0.4"
+
+# HTTP客户端
+reqwest = { version = "0.11", features = ["json"] }
+
+[dev-dependencies]
+tokio-test = "0.4"

nac-ai-compliance/src/compliance_layer.rs

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+//! 七层合规验证框架
+//! 
+//! 基于NAC七层合规验证体系
+
+use serde::{Deserialize, Serialize};
+use chrono::{DateTime, Utc};
+
+/// 合规层级
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize)]
+pub enum ComplianceLayer {
+    /// 第一层：基础身份验证（KYC/AML）
+    IdentityVerification,
+    /// 第二层：资产真实性验证
+    AssetAuthenticity,
+    /// 第三层：法律合规性验证
+    LegalCompliance,
+    /// 第四层：财务合规性验证
+    FinancialCompliance,
+    /// 第五层：税务合规性验证
+    TaxCompliance,
+    /// 第六层：环境社会治理（ESG）合规
+    ESGCompliance,
+    /// 第七层：持续监控与审计
+    ContinuousMonitoring,
+}
+
+impl ComplianceLayer {
+    /// 获取层级编号
+    pub fn level(&self) -> u8 {
+        match self {
+            Self::IdentityVerification => 1,
+            Self::AssetAuthenticity => 2,
+            Self::LegalCompliance => 3,
+            Self::FinancialCompliance => 4,
+            Self::TaxCompliance => 5,
+            Self::ESGCompliance => 6,
+            Self::ContinuousMonitoring => 7,
+        }
+    }
+
+    /// 获取层级名称
+    pub fn name(&self) -> &'static str {
+        match self {
+            Self::IdentityVerification => "基础身份验证",
+            Self::AssetAuthenticity => "资产真实性验证",
+            Self::LegalCompliance => "法律合规性验证",
+            Self::FinancialCompliance => "财务合规性验证",
+            Self::TaxCompliance => "税务合规性验证",
+            Self::ESGCompliance => "ESG合规验证",
+            Self::ContinuousMonitoring => "持续监控与审计",
+        }
+    }
+
+    /// 获取层级描述
+    pub fn description(&self) -> &'static str {
+        match self {
+            Self::IdentityVerification => "验证用户身份、反洗钱（AML）、了解你的客户（KYC）",
+            Self::AssetAuthenticity => "验证资产真实性、所有权、估值合理性",
+            Self::LegalCompliance => "验证资产合法性、产权清晰、无法律纠纷",
+            Self::FinancialCompliance => "验证财务报表、审计报告、资金来源",
+            Self::TaxCompliance => "验证税务合规、纳税记录、税务筹划合法性",
+            Self::ESGCompliance => "验证环境保护、社会责任、公司治理",
+            Self::ContinuousMonitoring => "持续监控资产状态、市场变化、风险预警",
+        }
+    }
+
+    /// 获取所有层级
+    pub fn all() -> Vec<Self> {
+        vec![
+            Self::IdentityVerification,
+            Self::AssetAuthenticity,
+            Self::LegalCompliance,
+            Self::FinancialCompliance,
+            Self::TaxCompliance,
+            Self::ESGCompliance,
+            Self::ContinuousMonitoring,
+        ]
+    }
+}
+
+/// 合规验证结果
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ComplianceResult {
+    /// 合规层级
+    pub layer: ComplianceLayer,
+    /// 验证状态
+    pub status: ComplianceStatus,
+    /// 置信度 [0.0, 1.0]
+    pub confidence: f64,
+    /// 风险等级
+    pub risk_level: RiskLevel,
+    /// 验证详情
+    pub details: String,
+    /// 发现的问题
+    pub issues: Vec<ComplianceIssue>,
+    /// 建议措施
+    pub recommendations: Vec<String>,
+    /// 验证时间
+    pub timestamp: DateTime<Utc>,
+}
+
+/// 合规状态
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
+pub enum ComplianceStatus {
+    /// 通过
+    Passed,
+    /// 有条件通过
+    ConditionalPass,
+    /// 需要人工审核
+    ManualReview,
+    /// 失败
+    Failed,
+    /// 待验证
+    Pending,
+}
+
+/// 风险等级
+#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize)]
+pub enum RiskLevel {
+    /// 低风险
+    Low,
+    /// 中风险
+    Medium,
+    /// 高风险
+    High,
+    /// 极高风险
+    Critical,
+}
+
+/// 合规问题
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ComplianceIssue {
+    /// 问题代码
+    pub code: String,
+    /// 问题描述
+    pub description: String,
+    /// 严重程度
+    pub severity: IssueSeverity,
+    /// 相关法规
+    pub regulations: Vec<String>,
+}
+
+/// 问题严重程度
+#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize)]
+pub enum IssueSeverity {
+    /// 信息
+    Info,
+    /// 警告
+    Warning,
+    /// 错误
+    Error,
+    /// 严重错误
+    Critical,
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_compliance_layer() {
+        assert_eq!(ComplianceLayer::IdentityVerification.level(), 1);
+        assert_eq!(ComplianceLayer::ContinuousMonitoring.level(), 7);
+        assert_eq!(ComplianceLayer::all().len(), 7);
+    }
+
+    #[test]
+    fn test_risk_level_ordering() {
+        assert!(RiskLevel::Low < RiskLevel::Medium);
+        assert!(RiskLevel::Medium < RiskLevel::High);
+        assert!(RiskLevel::High < RiskLevel::Critical);
+    }
+}

nac-ai-compliance/src/lib.rs

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+pub fn add(left: u64, right: u64) -> u64 {
+    left + right
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        let result = add(2, 2);
+        assert_eq!(result, 4);
+    }
+}