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/loader_test.go

@@ -0,0 +1,164 @@
+package rules
+
+import (
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+// TestRuleLoader_ValidYaml 测试加载有效YAML
+func TestRuleLoader_ValidYaml(t *testing.T) {
+	// 创建临时有效YAML文件
+	tmpfile, err := os.CreateTemp("", "valid_rule_*.yaml")
+	require.NoError(t, err)
+	defer os.Remove(tmpfile.Name())
+
+	validYAML := `
+rules:
+  - id: "CRED-EXPOSE-RESPONSE"
+    name: "响应体凭证泄露检测"
+    description: "检测 API 响应中是否包含可复用的供应商凭证片段"
+    severity: "P0"
+    matchers:
+      - type: "regex_match"
+        pattern: "(sk-|ak-|api_key|secret|token).*[a-zA-Z0-9]{20,}"
+        target: "response_body"
+        scope: "all"
+    action:
+      primary: "block"
+      secondary: "alert"
+    audit:
+      event_name: "CRED-EXPOSE-RESPONSE"
+      event_category: "CRED"
+      event_sub_category: "EXPOSE"
+`
+	_, err = tmpfile.WriteString(validYAML)
+	require.NoError(t, err)
+	tmpfile.Close()
+
+	// 测试加载
+	loader := NewRuleLoader()
+	rules, err := loader.LoadFromFile(tmpfile.Name())
+
+	assert.NoError(t, err)
+	assert.NotNil(t, rules)
+	assert.Len(t, rules, 1)
+
+	rule := rules[0]
+	assert.Equal(t, "CRED-EXPOSE-RESPONSE", rule.ID)
+	assert.Equal(t, "P0", rule.Severity)
+	assert.Equal(t, "block", rule.Action.Primary)
+}
+
+// TestRuleLoader_InvalidYaml 测试加载无效YAML
+func TestRuleLoader_InvalidYaml(t *testing.T) {
+	// 创建临时无效YAML文件
+	tmpfile, err := os.CreateTemp("", "invalid_rule_*.yaml")
+	require.NoError(t, err)
+	defer os.Remove(tmpfile.Name())
+
+	invalidYAML := `
+rules:
+  - id: "CRED-EXPOSE-RESPONSE"
+    name: "响应体凭证泄露检测"
+    severity: "P0"
+    # 缺少必需的matchers字段
+    action:
+      primary: "block"
+`
+	_, err = tmpfile.WriteString(invalidYAML)
+	require.NoError(t, err)
+	tmpfile.Close()
+
+	// 测试加载
+	loader := NewRuleLoader()
+	rules, err := loader.LoadFromFile(tmpfile.Name())
+
+	assert.Error(t, err)
+	assert.Nil(t, rules)
+}
+
+// TestRuleLoader_MissingFields 测试缺少必需字段
+func TestRuleLoader_MissingFields(t *testing.T) {
+	// 创建缺少必需字段的YAML
+	tmpfile, err := os.CreateTemp("", "missing_fields_*.yaml")
+	require.NoError(t, err)
+	defer os.Remove(tmpfile.Name())
+
+	// 缺少 id 字段
+	missingIDYAML := `
+rules:
+  - name: "响应体凭证泄露检测"
+    severity: "P0"
+    matchers:
+      - type: "regex_match"
+    action:
+      primary: "block"
+`
+	_, err = tmpfile.WriteString(missingIDYAML)
+	require.NoError(t, err)
+	tmpfile.Close()
+
+	loader := NewRuleLoader()
+	rules, err := loader.LoadFromFile(tmpfile.Name())
+
+	assert.Error(t, err)
+	assert.Nil(t, rules)
+	assert.Contains(t, err.Error(), "missing required field: id")
+}
+
+// TestRuleLoader_FileNotFound 测试文件不存在
+func TestRuleLoader_FileNotFound(t *testing.T) {
+	loader := NewRuleLoader()
+	rules, err := loader.LoadFromFile("/nonexistent/path/rules.yaml")
+
+	assert.Error(t, err)
+	assert.Nil(t, rules)
+}
+
+// TestRuleLoader_ValidateRuleFormat 测试规则格式验证
+func TestRuleLoader_ValidateRuleFormat(t *testing.T) {
+	tests := []struct {
+		name     string
+		ruleID   string
+		valid    bool
+	}{
+		{"标准格式", "CRED-EXPOSE-RESPONSE", true},
+		{"带Detail格式", "CRED-EXPOSE-RESPONSE-DETAIL", true},
+		{"双连字符", "CRED--EXPOSE-RESPONSE", false},
+		{"小写字母", "cred-expose-response", false},
+		{"单字符Category", "C-EXPOSE-RESPONSE", false},
+	}
+
+	loader := NewRuleLoader()
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			valid := loader.ValidateRuleID(tt.ruleID)
+			assert.Equal(t, tt.valid, valid)
+		})
+	}
+}
+
+// TestRuleLoader_EmptyRules 测试空规则列表
+func TestRuleLoader_EmptyRules(t *testing.T) {
+	tmpfile, err := os.CreateTemp("", "empty_rules_*.yaml")
+	require.NoError(t, err)
+	defer os.Remove(tmpfile.Name())
+
+	emptyYAML := `
+rules: []
+`
+	_, err = tmpfile.WriteString(emptyYAML)
+	require.NoError(t, err)
+	tmpfile.Close()
+
+	loader := NewRuleLoader()
+	rules, err := loader.LoadFromFile(tmpfile.Name())
+
+	assert.NoError(t, err)
+	assert.NotNil(t, rules)
+	assert.Len(t, rules, 0)
+}