- Add package documentation for cache, monitoring, performance, proxy, security, server, ssl, and variable config files - Include author attribution (xfy)
Disk cache implementation was previously removed but config structs remained. Remove ProxyCachePathConfig, Config.CachePath field, e2e WithCachePath helper, and docs reference.
安全修复: - ConnLimiter Acquire() TOCTOU 竞态: atomic.AddInt64 替代 loadInt64+addInt64 - Cache Purge token 时序侧信道: 改用 subtle.ConstantTimeCompare - Lua Cosocket SSRF: 新增 ip_guard 两层 IP 检查（字面量+解析后），拒绝私有/回环地址 - X-Accel-Redirect 路径遍历: urlpath.Clean + 前缀拒绝（/internal/ /admin/） - CRLF 注入: containsCRLF 校验变量展开后的 header 值，logging.Warn 可观测 - Proxy URI 注入: bytes.ContainsAny 检查 path 中的 @\r\n 危险字符 代码质量: - disk_cache.go Set() 7 处静默 return 改为 logging.Error 日志记录 - config.go 从 2392 行拆分为 9 个按域文件（config/server/proxy/security/ssl/cache/performance/monitoring/variable） 验证: go build + vet + golangci-lint(0 issues) + test(83.2% 无回归) + race detector 全部通过 Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
