I plan with Claude Code a lot and I have hundreds of plan files: one-off fixes to infrastructure migrations I've iterated on for weeks or longer, many with subplans and rejected alternatives alongside it. They're useful documents, but completely unnavigable. Filenames are generated, so a-couple-of-things-splendid-tarjan.md doesn't help me to know if work is complete or pending, whether I still care, or if a plan replaced it.

pentimento reads the plans directory and writes a small frontmatter block into each file: status from a Progress section, a parent, and a project.