* test(web): standardize frontend tests on Vitest
- configure Vitest, jsdom, and React Testing Library with shared test scripts.
- migrate existing node:test suites to the Vitest runner.
- rewrite JsonCodeEditor component tests with RTL and remove the direct happy-dom dependency.
* fix(ci): run frontend tests with Vitest
- invoke the configured Vitest script so browser test setup loads in CI.
- migrate remaining node:test suites to Vitest lifecycle APIs.
* test(web): use shared jsdom environment for component tests
- migrate usage cost and tool price tests to React Testing Library.
- remove duplicate happy-dom globals and rely on the configured Vitest setup.
* test(web): verify behavior with shared vitest setup
- replace Node test assertions with Vitest expect across frontend suites.
- migrate Keys component tests to React Testing Library interactions.
- centralize jsdom browser mocks for consistent component execution.
* fix(web): unblock frozen installs and Vitest CI
- sync dompurify 3.4.13 metadata into the Bun lockfile.
- replace the bun:test and happy-dom redemption harness with Vitest and RTL.
- preserve quota conversion, error feedback, and stale-response coverage in jsdom.
When the dashboard token refresh endpoint returned 429 (shared
critical rate limit) the frontend classified it as out_of_sync,
cleared local auth state, and redirected to /sign-in. The rate limit
itself is working as intended; the bug is that a temporary rejection
was treated as a terminal auth failure.
- Treat 429 refresh responses as transient errors on the frontend,
keeping the session retryable instead of clearing it. Only explicit
401 or confirmed session mismatch/race exhaustion clears auth state.
- Return Retry-After on all rate-limited responses (remaining TTL on
Redis, window duration on the in-memory limiter) so clients can
back off.
- Log the underlying error with request context when auth session
errors map to 500 AUTH_INTERNAL_ERROR, and replace fmt.Println with
request-scoped logging in the Redis rate limiter error paths.
Fixes#6361
Calcium-Ion