feat(ui): ProviderIcon component with @lobehub/icons + PNG fallback (#529)
- 130+ providers covered by Lobehub SVG components via LobehubErrorBoundary
- Falls back to existing /providers/{id}.png, then generic icon
- Replaces manual img state machine in ProviderCard + ApiKeyProviderCard
feat(scheduler): modelSyncScheduler — 24h model list auto-update (#488)
- Syncs 16 major providers every 24h (MODEL_SYNC_INTERVAL_HOURS configurable)
- Wired into POST /api/sync/initialize startup hook
fix(oauth): Gemini CLI — clear error when client_secret missing in Docker (#537)