CSV import formatting preflight and supported normalization

Detect encoding, delimiter, quoting, header, and row-width problems; normalize only supported deterministic cases.

Verified boundaries

One file, maximum 10 MB and 25,000 rows. No sensitive data, fuzzy identity matching, ambiguous merging, or third-party acceptance guarantee. Source evidence is preserved and exceptions require review.

What to check

The preflight detects broken quoting and ragged rows but rejects them for review. It normalizes only structurally valid supported input.

Safe next step

Record the target delimiter and required headers. Unsupported quoting, encoding, or row-shape defects remain explicit exceptions.

Capability lineage: CAP-CSV-NORMALIZATION-v1

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