Audit confirms the csv crate correctly handles all RFC 4180 cases:
- Embedded commas in quoted fields
- Escaped quotes ("") within quoted fields
- Embedded newlines in quoted fields
- Combined commas + escaped quotes
No bugs found — added 4 regression tests to document compliance.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>