feat(P1/P2): 完成TDD开发及P1/P2设计文档

## 设计文档
- multi_role_permission_design: 多角色权限设计 (CONDITIONAL GO)
- audit_log_enhancement_design: 审计日志增强 (CONDITIONAL GO)
- routing_strategy_template_design: 路由策略模板 (CONDITIONAL GO)
- sso_saml_technical_research: SSO/SAML调研 (CONDITIONAL GO)
- compliance_capability_package_design: 合规能力包设计 (CONDITIONAL GO)

## TDD开发成果
- IAM模块: supply-api/internal/iam/ (111个测试)
- 审计日志模块: supply-api/internal/audit/ (40+测试)
- 路由策略模块: gateway/internal/router/ (33+测试)
- 合规能力包: gateway/internal/compliance/ + scripts/ci/compliance/

## 规范文档
- parallel_agent_output_quality_standards: 并行Agent产出质量规范
- project_experience_summary: 项目经验总结 (v2)
- 2026-04-02-p1-p2-tdd-execution-plan: TDD执行计划

## 评审报告
- 5个CONDITIONAL GO设计文档评审报告
- fix_verification_report: 修复验证报告
- full_verification_report: 全面质量验证报告
- tdd_module_quality_verification: TDD模块质量验证
- tdd_execution_summary: TDD执行总结

依据: Superpowers执行框架 + TDD规范

gateway/internal/compliance/rules/engine.go

@@ -0,0 +1,137 @@
+package rules
+
+import (
+	"regexp"
+)
+
+// MatchResult 匹配结果
+type MatchResult struct {
+	Matched  bool
+	RuleID   string
+	Matchers []MatcherResult
+}
+
+// MatcherResult 单个匹配器的结果
+type MatcherResult struct {
+	MatcherIndex int
+	MatcherType string
+	Pattern     string
+	MatchValue  string
+	IsMatch     bool
+}
+
+// RuleEngine 规则引擎
+type RuleEngine struct {
+	loader     *RuleLoader
+	compiledPatterns map[string][]*regexp.Regexp
+}
+
+// NewRuleEngine 创建新的规则引擎
+func NewRuleEngine(loader *RuleLoader) *RuleEngine {
+	return &RuleEngine{
+		loader:          loader,
+		compiledPatterns: make(map[string][]*regexp.Regexp),
+	}
+}
+
+// Match 执行规则匹配
+func (e *RuleEngine) Match(rule Rule, content string) MatchResult {
+	result := MatchResult{
+		Matched:  false,
+		RuleID:   rule.ID,
+		Matchers: make([]MatcherResult, len(rule.Matchers)),
+	}
+
+	for i, matcher := range rule.Matchers {
+		matcherResult := MatcherResult{
+			MatcherIndex: i,
+			MatcherType: matcher.Type,
+			Pattern:     matcher.Pattern,
+			IsMatch:     false,
+		}
+
+		switch matcher.Type {
+		case "regex_match":
+			matcherResult.IsMatch = e.matchRegex(matcher.Pattern, content)
+			if matcherResult.IsMatch {
+				matcherResult.MatchValue = e.extractMatch(matcher.Pattern, content)
+			}
+		default:
+			// 未知匹配器类型，默认不匹配
+		}
+
+		result.Matchers[i] = matcherResult
+		if matcherResult.IsMatch {
+			result.Matched = true
+		}
+	}
+
+	return result
+}
+
+// matchRegex 执行正则表达式匹配
+func (e *RuleEngine) matchRegex(pattern string, content string) bool {
+	// 编译并缓存正则表达式
+	regex, ok := e.compiledPatterns[pattern]
+	if !ok {
+		var err error
+		regex = make([]*regexp.Regexp, 1)
+		regex[0], err = regexp.Compile(pattern)
+		if err != nil {
+			return false
+		}
+		e.compiledPatterns[pattern] = regex
+	}
+
+	return regex[0].MatchString(content)
+}
+
+// extractMatch 提取匹配值
+func (e *RuleEngine) extractMatch(pattern string, content string) string {
+	regex, ok := e.compiledPatterns[pattern]
+	if !ok {
+		regex = make([]*regexp.Regexp, 1)
+		regex[0], _ = regexp.Compile(pattern)
+		e.compiledPatterns[pattern] = regex
+	}
+
+	matches := regex[0].FindString(content)
+	return matches
+}
+
+// MatchFromConfig 从规则配置执行匹配
+func (e *RuleEngine) MatchFromConfig(ruleID string, ruleConfig Rule, content string) (bool, error) {
+	// 验证规则
+	if err := e.validateRuleForMatch(ruleConfig); err != nil {
+		return false, err
+	}
+
+	result := e.Match(ruleConfig, content)
+	return result.Matched, nil
+}
+
+// validateRuleForMatch 验证规则是否可用于匹配
+func (e *RuleEngine) validateRuleForMatch(rule Rule) error {
+	if rule.ID == "" {
+		return ErrInvalidRule
+	}
+	if len(rule.Matchers) == 0 {
+		return ErrNoMatchers
+	}
+	return nil
+}
+
+// Custom errors
+var (
+	ErrInvalidRule = &RuleEngineError{"invalid rule: missing required fields"}
+	ErrNoMatchers  = &RuleEngineError{"invalid rule: no matchers defined"}
+)
+
+// RuleEngineError 规则引擎错误
+type RuleEngineError struct {
+	Message string
+}
+
+func (e *RuleEngineError) Error() string {
+	return e.Message
+}