Go date layouts only know English month names, so date(value, layout)
cannot parse "le 19 janvier 2026". frDate(text) extracts and parses such
dates (day optional, abbreviated months, accents optional) into a native
date; no match is a rule error routing the document to pending/.
Documented in arch.md §5, covered by unit tests.
An unreadable PDF was still passed to cfg.Evaluate with nil pages, producing
a cascade of spurious errors (index out of range on pages[0], missing
mandatory fields) in the imported event. Route straight to pending/ with the
extraction failure as the single error.
thomas