- Fix body text extraction to actually filter excluded elements (script,
nav, footer, aside, etc.) using node ID tracking instead of unused HashSet
- Add IPv6 reserved range checks to SSRF prevention: ULA (fc00::/7),
documentation (2001:db8::/32), discard prefix (100::/64)
- Add errors field to frontend BulkImportResponse type
- Validate Content-Type on CSV multipart upload (reject non-text files)
- Add 6 new unit tests for the fixes
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>