On a git-sync space, a page's web edit was silently reverted within ~1 poll,
and idle spaces showed dozens of 'update' actions per cycle with no real change.
Root cause: the vault->Docmost body ingest (importPageMarkdown) is re-run every
poll for pages the upstream change-detection mis-flags as changed (the
markdown<->ProseMirror round-trip is not byte-stable: JSON key order / default
attrs differ though the content is identical). Each call re-imports the SAME body
into the live collab doc -- a no-op at idle, but it CLOBBERS a concurrent human
edit still in the debounced (not-yet-flushed) Yjs doc.
Fix: skip the ingest when it is genuinely a no-op --
1) baseMarkdown byte-identical to the current file (vault unchanged), or
2) the parsed incoming body is canonically-JSON-equal (key-order-insensitive)
to the page's current Docmost content.
A real git-side change is neither, so legitimate git->Docmost ingests still apply.
Verified: idle churn 38 update/cycle -> 0; web edit on an affected page 0/3 -> 3/3
persisted; genuine git-side edit still ingests. Found by autonomous QA
(web-test-orchestrator) + independent verifier.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
claude-stand
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