Refresh extract: preserve Vietnamese noun 'Lỗi' in titles + widen decorative-quote stripping (boundary/run policy, word-internal place-name apostrophes preserved); migrate hf_export to the per-doc JSONL tier

May-2026 recovery: live-API body refresh + NULL-markdown semantics + title/agency sweep

Vietnamese National Legal Database (vbpl.vn) corpus with structure + embedding layers