v0.2.3

修复（关键）

• CLI 中间件把派发上下文丢弃、改用 context.Background() 调用各命令，导致
  SIGINT/SIGTERM 取消信号无法传入 handler——oss serve 收到 SIGTERM 后不再
  优雅关停（挂起直至强杀）、oss cat/ls 等大输出场景 Ctrl-C 也无法中断。
  已修复为透传信号上下文：serve/mcp 恢复 1 秒内优雅退出，流式命令可随时中断

升级

• xyz-go v0.3.1 → v0.3.2：serve/mcp 改用其新的 CliHints.Daemon 声明式标记
  （长驻命令：隐式不进入 HTTP/MCP 通道、不渲染返回值、ctx 取消即退出 0），
  替代此前仅靠"不给 HTTP/MCP hint"的约定式隔离

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v0.2.3 — fix signal cancellation; xyz-go v0.3.2 declarative daemon commands

Fix (critical)

• The CLI middleware discarded the dispatch context and invoked handlers
  with context.Background(), so SIGINT/SIGTERM never reached them — oss serve
  no longer shut down gracefully on SIGTERM (hanging until force-killed), and
  long streaming commands (cat/ls) could not be interrupted with Ctrl-C.
  The signal context is now passed through: serve/mcp exit gracefully within
  a second, streaming commands can be interrupted at any time

Upgrade

• xyz-go v0.3.1 → v0.3.2: serve/mcp adopt the new CliHints.Daemon marker
  (blocking commands: implicitly excluded from the HTTP/MCP channels, no
  result rendering, exit 0 on ctx cancellation), replacing the previous
  convention-only isolation