Show HN: Signboard – Kanban app lists are folders and cards are Markdown files

Hi HN! I'd really love your feedback on this. I've been using and building Signboard for about 6 months now. I use it every single day and love it for managing my personal and commercial projects.

It has MCP and CLI so using it with Claude or Codex is super fun and easy.

Any questions, please let me know! And please any new ideas send them my way. Thank you!