Support the Entity card Toggle Header about decluttering-card

[RomRider]

There's an ugly trick that should work (I checked how the code works on the entities card):

type: custom:decluttering-card
entity: light.test_light #this would be used by the entities card header
variables:
  - entity: light.test_light # this is for decluttering-card card

[soloam]

Thank you that solved it

Side question: I see that you are the maintainer of the Button-Card and Decluttering-Card, what is your road map? Do you plan to keep them side by side, or do you plan to merge them? The Button-Card contains a lot more features, even to templates (like for example the inline javascript), do you plan to bring them to Decluttering-Card?

Thank You

[RomRider]

The purpose of those 2 cards are not the same. I don't plan to merge them together.
This card's purpose is to reduce the config size. An alternative is lovelace-gen though.
I don't plan to add support for javascript template on this card, there's config-template-card for that.