worldtree-dev finalized the #331 503 turn-launch error_code as `not_ready`
(re-pinned from internal_error; retryable, matching the /readyz 503 sense)
and re-froze the OpenAPI at 2.2.0 documenting the 409/503 statuses our
v0.18.3 mapping already handles. Tighten our fallback default from the
placeholder `turn_launch_unavailable` to the canonical `not_ready` (the
default only fires when the body omits error_code — the real code is
surfaced verbatim regardless). +1 test, suite 510 green.
NOTE: a full conversation-api-spec.md re-vendor to the b2 era is a separate,
larger pin-refresh (ratatoskr vendors the markdown spec, not the OpenAPI
JSON) — deferred, to bundle with the v1 coverage-audit / when personal is on b2.
vh
e4317f6a73