A flat .md under agents/ or commands/ whose frontmatter contains none of
the definition keys (name, description, mode, agent, model,
argument-hint, temperature, permission) is documentation, not an item:
discovery marks it Skipped with a recorded warning — it never enters a
selection, inventory, availability listing or collision index, but the
warning lands in the lockfile and add/update/select reports like other
discovery warnings. Skills keep their folder+SKILL.md marker, MCP keeps
the .yaml marker. README gains the canonical layout table and the
migration note for folder-style agent repos.
Closes beads: agent-lib-2n7
- flat per-type deployed namespace enforced across own items and all sources
- own-vs-vendored and vendored-vs-vendored collisions abort with both parties named
- --rename upstream=deployed resolves collisions; on-disk folder always equals
deployed name; rename targets are validated against new collisions
- checks run before any tree mutation; validate re-checks the namespace offline
m3ta-chiron