Versioning & deprecation

Current surface

All customer control-plane routes live under:

https://seaotter-api-bpenevambq-uc.a.run.app/api/v1

GET /health is unversioned (liveness only).

/api/v1 is the stable surface.

Change	Policy
New endpoints, optional fields, additive enum values	Non-breaking; ship anytime
Renaming/removing fields, changing types, stricter validation that rejects previously valid requests	Breaking
Breaking changes	New major prefix (`/api/v2`) or ≥ 90 days deprecation notice in release notes / OpenAPI `deprecated` flags

OpenAPI deprecated: true on an operation means: still works, but plan a migration before removal.