Pre-existing format drift accumulated across v1.4.x; running
prettier brings the whole tree back to baseline so future diffs
read clean. No behaviour change.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
End-to-end integration test for the multi-provider redundancy runner.
Boots the postgres testcontainer, seeds a user with both an OpenAI key
and an Anthropic key plus an explicit chain (openai -> anthropic),
intercepts upstream HTTP calls via fetch-spy, and exercises three
scenarios:
1. Hard-fail-then-success cascade. OpenAI primary returns 401, the
runner walks to Anthropic, the route surfaces a 200 with
`chainProviderType: "anthropic"` and `fallbackHopCount: 1` recorded
in the audit log.
2. All-fail cascade. Every chain entry returns 503, the route surfaces
a 503 with the "temporarily unavailable" envelope.
3. Last-working cache. After scenario 1 the runner remembers Anthropic
was the working provider; the next call (cache bypass forced via
nulled `insightsCachedAt`) reorders the chain so Anthropic is tried
first and only ONE upstream fetch fires (not two — the doomed
OpenAI 401 round-trip is skipped).
Test routing on URL substring (`/chat/completions` for OpenAI,
`/messages` for Anthropic) instead of headers so the assertion is
robust against any future header-shape drift in the clients.
Constrained to user-level providers because the testcontainer
migration history pre-dates several `app_settings` columns added
through schema-only edits — touching admin-openai resolution would
blow up before the chain runner even sees the request.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
