* fix(api): enforce image generation API key auth
* fix(api): align image route auth guard with clientApiPolicy
The route-level guard added for image generation was stricter than the
authz middleware that already fronts /api/v1/* (src/proxy.ts →
clientApiPolicy), so requests the pipeline admits were 401'd by the
handler:
- A cookie-authenticated dashboard session was rejected under
REQUIRE_API_KEY=true. The dashboard Media page
(dashboard/cache/media) and the Playground call these routes with a
session and no Bearer — the same mismatch already fixed for
/api/playground/presets.
- A presented invalid key was rejected even with REQUIRE_API_KEY=false,
where clientApiPolicy (#2257) and the sibling /v1/embeddings and
/v1/web/fetch routes degrade a stale CLI key to anonymous instead.
Extract the shared guard into shared/utils/clientApiRouteAuth so both
image routes (and future /v1 handlers) mirror the middleware contract
instead of re-deriving it, and drop the now-dead auth imports.
Also switch the call-log attribution fallback back to `||`: with `??`,
an empty-string apiKeyId/apiKeyName would be persisted verbatim and
would block the request-scoped context, which the previous
`entry.apiKeyId || null` never did.
Tests: cover the dashboard-session and keyless-mode-invalid-key
branches, and split the auth/attribution cases into
image-generation-route-auth.test.ts to stay under the 800-line
new-test-file cap.
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
---------
Co-authored-by: alexey.nazarov@softmg.ru <alexey.nazarov@softmg.ru>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>