- New: open-sse/services/apiKeyRotator.ts — round-robin rotation
between primary API key + providerSpecificData.extraApiKeys[]
- Modified: open-sse/executors/base.ts — buildHeaders() rotates key
using getRotatingApiKey() when extraApiKeys configured
- Modified: open-sse/handlers/chatCore.ts — injects connectionId into
credentials to enable per-connection rotation index tracking
- Modified: providers/[id]/page.tsx — 'Extra API Keys' UI section in
EditConnectionModal: add/remove keys, persisted in providerSpecificData
T08 (quota window rolling) and T13 (wildcard model routing) confirmed
already implemented in accountFallback.ts and wildcardRouter.ts.