建议同时升级客户端与服务端到v0.3.0
引入 KIP 握手（PFS 会话密钥 + anti-replay)
新增 WebSocket/WS 隧道支持（HTTPMask），并改进 half-close/CloseWrite 兼容与 SIGINT/SIGTERM 退出
新增/完善配置矩阵冒烟（cmd/matrix-smoke + go test）与远端矩阵工具（cmd/remote-matrix）
升级到 Go 1.26.0，依赖更新；Docker builder 同步到 Go 1.26
全量 Go 源码统一 2026 GPLv3 头注释；文档与 server/client 配置模板更新拆分
Introduce KIP handshake (PFS session keys + anti-replay); protocol compatibility changes
Add WebSocket (WS) tunnel support for HTTPMask; improve half-close/CloseWrite behavior and clean SIGINT/SIGTERM shutdown
Add/extend config-matrix smoke coverage (cmd/matrix-smoke + go test) and cmd/remote-matrix
Upgrade to Go 1.26.0 and refresh dependencies; Docker builder updated to Go 1.26
Apply 2026 GPLv3 headers to all Go sources; docs and split server/client config templates updated