Only use provider apiRegion values when they are strings before resolving
the GLM quota endpoint, preventing invalid metadata from affecting usage
requests.
Run unit tests with single-test concurrency to avoid shared-state flakes
and expand coverage for auth-protected routes, provider node validation,
proxy and stream handling, model sync, token refresh, and protobuf
parsing.
Move chat pipeline validation, circuit breaker execution, proxy
resolution, logging, and session header handling into dedicated
helpers to keep the SSE handler smaller and easier to verify.
Also fix shared API option precedence, rebuild skill version caches
after deletions, ignore api.trycloudflare.com false positives, and
add rate-limit manager test flush/reset hooks for deterministic
coverage.
Expand integration and unit coverage across chat routing, auth,
cloud sync, skills, executors, streaming, DB helpers, proxy handling,
and provider/model utilities.
