Group entities merged with the experimental group-power switch. Groups of
switches now get their own aggregate entity too.
Previously, a Cync device group ("Living Room", etc.) could show up as up to
two disagreeing controls: a light group entity (opt-in, built on Home
Assistant's own group-light helper, per-member fanout) and, separately, a
switch entity living on the "Cync LAN Bridge" device (opt-in via "Enable
experimental commands", addressing the group's real mesh address directly).
Neither appeared "under" the room the way individual devices do, and the two
could only ever agree by coincidence.
They're one entity per group now:
- A group whose members are all lights gets a
lightgroup entity, same as
before. - A group whose members are all switches (no light-domain member) gets a
newswitchgroup entity instead - same behavior, same options, built on
Home Assistant's own group-switch helper. A group with a mix of the two
gets the light entity, covering just its light members. - "Enable experimental commands" no longer controls whether the group
entity exists - "Create light group entities" does, for either domain.
It now controls the group entity's turn_on/turn_off behavior: on, a
plain on/off sends one command straight to the group's mesh address
(the old switch's behavior, unconfirmed against real firmware); off (the
default), it fans out one command per member (the old light group's
behavior, confirmed working). Attribute-carrying light calls
(brightness/color/etc.) always fan out regardless, since the mesh-address
command carries no such data.
This removes the standalone group-power switch entity (switch.<x>_power
on the bridge device) - if you had automations or dashboards pointing at it,
repoint them at the room's own group entity. The set_group_power service
is unaffected.