/oic/d's `rt` names the device's own OCF device type, which beats
parsing board part numbers whenever a dump populates it. Add
for_device_by_oic_type() and an _OIC_TYPE_TO_KEY table (airconditioner,
dryer, refrigerator, washer, plus SmartThings' x.com.st.d.stickcleaner
and x.com.st.d.steamcloset extensions), and consult it first in
resolve(), ahead of modelNum/description and the resource-signature
fallback.
Thread the master's device_types from read_identity() through
coordinator.py's discovery pass and config_flow's connection probe;
subdevices keep resolving from their own /information/vs/0 (or the
master's registry as a fallback) since they have no /oic/d of their
own read today.
Marc Billow
4f9e630ae9