📝 docs(qa): add authentication api testing documentation

- 创建认证API实际请求测试文档，记录测试结果和质量评估
- 包含测试覆盖情况、NFR验证结果和未来改进建议
- 质量评分为95分，所有验收标准均已满足

docs/qa/gates/004.002-authentication-api-testing.yml

@@ -0,0 +1,41 @@
+schema: 1
+story: "004.002"
+story_title: "认证API实际请求测试"
+gate: PASS
+status_reason: "认证API测试实现完全满足所有验收标准，测试覆盖全面，代码质量优秀，性能达标"
+reviewer: "Quinn (Test Architect)"
+updated: "2025-09-18T03:42:00Z"
+
+top_issues: []
+waiver: { active: false }
+
+quality_score: 95
+expires: "2025-10-02T00:00:00Z"
+
+evidence:
+  tests_reviewed: 16
+  risks_identified: 0
+  trace:
+    ac_covered: [1, 2, 3, 4, 5]
+    ac_gaps: []
+
+nfr_validation:
+  security:
+    status: PASS
+    notes: "覆盖所有关键安全场景：认证失败、令牌验证、权限控制"
+  performance:
+    status: PASS
+    notes: "响应时间<200ms，满足性能基准要求"
+  reliability:
+    status: PASS
+    notes: "错误处理全面，包含各种异常场景"
+  maintainability:
+    status: PASS
+    notes: "代码组织清晰，遵循项目标准和最佳实践"
+
+recommendations:
+  future:
+    - action: "增加并发性能测试场景"
+      refs: ["auth.integration.test.ts:376-410"]
+    - action: "添加边界情况测试（超长用户名、特殊字符等）"
+      refs: ["auth.integration.test.ts:49-140"]