The v3 patch bug allowed Micropub to update MongoDB with aiTextLevel/
aiCodeLevel values but write post files without the ai: frontmatter
block (supportsAiDisclosure was always false). Re-saving with the same
values correctly returned "no properties changed" — but the file on disk
remained stale.
New patch (patch-micropub-ai-block-resync.mjs) adds _aiBlockVersion to
each post document in MongoDB. On update, if a post has AI fields but
_aiBlockVersion != "v4", the no-change check is bypassed and the file
is force-rewritten exactly once. Subsequent no-change saves behave
normally.
Also adds AI transparency section to README documenting the full
implementation, patch chain, v4 root cause, and re-save instructions.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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