* shutdown speedup, improve rendering

* improve subagent render

* fix(ui): restore terminal after interactive shell

* herder, help

* force halfcell for herdr :( )

* grok, deepseek4, mcp display, herdr halfrender

* [verified] test: stabilize Python 3.14 UI checks (#916)

Co-authored-by: panding <panding99@outlook.com>

---------

Co-authored-by: evalstate <evalstate@users.noreply.github.com>
Co-authored-by: Pan Ding <56944854+panDing19@users.noreply.github.com>
Co-authored-by: panding <panding99@outlook.com>