Legacy API proxy mode

Opt-in legacy API proxy mode for safer migration off the previous host.

Added an opt-in proxy mode that routes legacy clients through the v1 API host, returning canonical CribScore responses while logging the legacy call shape for migration analysis.

proxylegacy

Commits465569e

Related changes

2026-04-10ChangedAPI

Hardened legacy API proxy transport

Legacy API proxy mode now retries transient transport errors before falling back to cached responses.

2026-04-10ChangedAPI

Bounded legacy auth fallback cache

Legacy auth fallback now caches negative results to avoid hammering the upstream identity provider.

2026-04-11ChangedAPI

Bounded public facility and decision write latency

Public facility and decision writes are now bounded with a structured timeout fallback.