Add a `quick` flag to `opendataloader_available` so registry listing can use
a single short-timeout health check instead of the patient retry/backoff loop.
Parsing keeps the original tolerant probe to handle a hybrid service that is
still starting up.
Introduce opendataloader and PaddleOCR-VL parser engines with tenant-level
settings UI, replace liteparse, and harden Excel/PPT/Markdown parsing.
Optional odl-hybrid sidecar stays local-build only and is excluded from
default dev-start and full profiles.
wizardchen