`[2026-07-14]` **soong-lab adopted as our Tier-3 agent-authoring studio (operator-directed).** ratatoskr consumes soong-lab bundles → WT `agents.define`, and ships agents back as bundles. Sindra round-trip proven (soong imported her `resume` half through real `import_bundle`); soong-lab export+importer contracts pinned via canonical-sync (`canonical_source=soong-lab` @ f434016, commit `39050c3`). The 4 soong-lab ROLE_CHOICES = WT model-role slugs 1:1 by name (worldtree-dev); `character`/`thoughtful-character` need the `character` grant (held), `assistant`/`thoughtful-assistant` need `foundational` (routed to infra-ops). NOT on the v1 coverage-map (sibling-studio interop, not a WT I/O point) — operator chose to pursue anyway.
