Kanban Markdown

A workflow skill for managing kanban boards stored as markdown files with YAML frontmatter in `.devtool/features/`. Each task lives in its own `.md` file with status, priority, assignee, and fractional index ordering that the VS Code kanban-markdown extension renders visually. The skill handles creating features with proper ID generation, moving them between columns (including the done subfolder), and maintaining exact serialization format so the extension can parse everything. It's built around very specific YAML formatting rules, five status columns, and lexicographic ordering for drag-and-drop positioning. Useful if you want plaintext project management that plays nicely with git and your editor.