MaxLLM v0.3.2 — regression-test coverage (admin, gateway, translate, SigV4)

What's in v0.3.2

Patch release on top of v0.3.1. No feature, configuration or wire-format
changes — this release locks the current behaviour in with more regression
tests and ships the static gateway binary used on oleNas01.

Test coverage (behaviour locked in)

• translate: responses translation argument semantics; opencode
  normalization branches; AWS SigV4 date arithmetic and the clock helper.
• gateway: the rate-limit header / body / learned-pattern resolvers;
  provider label mapping, circuit-breaker registry, model-from-path parsing,
  Retry-After, per-provider error normalisation, streamed usage extraction
  (including the bounded SSE tail), and the [auth] section wiring the
  key_auth plugin.
• admin: circuit-breaker / session-binding / rate-limit-pattern / request-log
  store round-trips; team-member removal; unmatched-route 404s.

Other

• chore(git): ignore every cargo-mutants output directory.

Artifacts

• maxllm-server-linux-x86_64-musl — static-pie build of the gateway
  (--version → maxllm 0.3.2), same artifact deployed to oleNas01.

Compatibility

No public API, configuration or wire-format changes: upgrading from v0.3.1 is
drop-in.