Worked on the UBS_M1_TEI repository to deliver comprehensive data quality improvements for La Bruyère.xml, focusing on enhancing metadata accuracy and the scholarly apparatus. Applied expertise in XML, TEI, and data structuring to enrich metadata with author identifiers and publisher details, insert new person entries, and refine structural and typographic elements. Added annotations, glossary notes, and glyph definitions to support scholarly research and improve reader comprehension. Enhanced textual variation structures to better capture variant readings and critical apparatus, consolidating all updates through well-documented commits. These changes improved data integrity, discoverability, and interoperability for downstream digital scholarly workflows.