Long-running repositories collect Markdown files that disagree about what is current. Once Codex, Claude, and humans work across many sessions, an old architecture note can quietly become "the plan" again.
Markdown Gatekeeper keeps one current revision per topic. Competing docs stay proposals; superseded sources remain recoverable.
Local-first. Plain Markdown and Git. No account or cloud service.
npm install -g github:nanlogic/markdown-gatekeeper
mdg setup codex
mdg init .
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