- Add generateShareLink() for owners to create share URLs with checksums - Add validateShareAccess() to validate checksum and TTL on tenant visits - Implement automatic TTL reset (10 days → 1 hour after first visit) - Include automatic cleanup of expired shares 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>