Infer CSV column names and sample data types
https://agent-evidence-extractor.defcronyke.workers.dev/v1/csv-profileOverview
Infer a draft CSV schema from sample text before loading a table or importing data. Returns each column name, a conservative sample data type, missing-value and distinct-value counts, possible unique keys, malformed-row issues, and a draft JSON Schema. Deterministic, no model call, and no cell values returned. Sample types and required fields may be ambiguous; review before production use.