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Lint wikitext against Parsoid and legacy parser wikitext metrics
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Description

Once we set appropriate wikitext limits for Parsoid (T254522), we will need to lint all WMF content against these limits and flag pages for fixup (splitting? simplification?) which the legacy parser would parse but while fail Parsoid's resource limits.

Alternatively we could ensure Parsoid can handle a strict superset of all content accepted by the legacy parser... but that's probably not realistic.