claude code agent 227 997d18c132 test(git-sync): exhaustive converter coverage + fix 3 round-trip data-loss bugs ...

Coder↔reviewer design loop (9 rounds, reviewer verdict: exhaustive) produced
92 specs; implemented +123 tests (465 -> 588 passing). The new round-trip
coverage exposed three genuine data-loss bugs in the Markdown<->ProseMirror
converter, all now FIXED (round-trip is lossless for these):

1. pageBreak was lost on export (no converter case -> rendered to "" and the
   node vanished). Now emits <div data-type="pageBreak"></div>, which the schema
   parses back -> round-trips.
2. A block image between blocks left an empty <p> artifact after import-hoisting,
   producing a phantom blank-gap diff on every sync. markdownToProseMirror now
   strips content-less paragraphs after generateJSON — with a schema-validity
   guard that keeps the obligatory single empty paragraph in `content: "block+"`
   containers (tableCell/tableHeader/blockquote/column/callout/doc), so empty
   cells/quotes never become an invalid `content: []`.
3. The `code` mark combined with another mark was not byte-stable (emitted nested
   HTML that the schema's `code` `excludes:"_"` collapsed on import). The
   converter now emits code-only when `code` co-occurs, matching the editor.

New coverage spans media/diagram/details/columns/math/mention attribute
round-trips, converter emission branches, git error paths, and engine decision
branches. A dedicated test pins the empty-container schema validity (the review
catch on the bug-2 fix).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-06-24 16:49:59 +03:00

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