Natural-Language Data Analytics POC

Anonymized contribution to a historical natural-language/SQL analytics backend and proof-of-concept workstream. Source/account evidence includes database connections, schema/business-glossary workflows, authentication, query-related utilities, ambiguity/follow-up handling, and maintenance in FastAPI components. Scope: Historical/POC components, not ownership of later product generations or a guarantee that generated SQL is correct or safe. No production adoption or measured answer-quality claim is made.