X_WIKI_TABLE_MALFORMED
Means
a markdown table in wiki/ does not render as a table
Typical cause
a row whose cell count differs from its header, a delimiter row of the wrong width, or a header with no delimiter under it. GFM drops the extra cells silently on the published page, so the wiki renders wrong and nothing says so. An escaped pipe is content, not a delimiter — 36 rows across 16 pages rely on that
Fix
bun run scripts/wiki-tables.ts --json — the fix names the file, the line and the cell count the row must have