rzen
cb6f6100a7
Yams validates and reads; writes are surgical line-span edits over retained raw text, so untouched bytes — unknown keys, comments, odd formatting, bodies — round-trip identically by construction. Strict schema/order readers distinguish valid/missing/malformed for the loader's fail-fast; lenient fields preserve malformed values verbatim; modified-by is schema-owned. Adds the Yams package and the fixture folder-reference wiring. 44 tests (105 cases). Claude-Session: https://claude.ai/code/session_018BjQRYBR6jQja3jCRi5S3A