rzen
95418a2670
Pure tree walk: root → lanes → cards, level is position. Fail-fast with path+reason for bad YAML, missing/malformed schema or order, newer schema, rootless board; index-less folders skip with a collected+logged warning; strays, hidden files, and symlinks ignored; board-level deleted ignored with a warning; tombstones loaded and flagged. 17 tests. Claude-Session: https://claude.ai/code/session_018BjQRYBR6jQja3jCRi5S3A