Grounded Vault A grounded vault is a three-layer Markdown store in which every compiled claim can be traced back to an immutable source and every page can be checked for staleness with one . It needs a git repository and nothing else. The convention comes from the project, which is a reference implementation rather than a dependency; this skill teaches the pattern so it works with plain files and whatever agent is in the session. When to Use - An agent compiles notes, papers, transcripts, logs, or code into wiki pages that later sessions rely on. - A page cites numbers, dates, or quotes, and…