Addon-badge does not work

I write an addon.The addon-badge does not work.
When I open the link in HA, it say no addon find.
This is my addon-badge link.
[addon]: Link to Add-on: dashboard – My Home Assistant
This is github repo:
skyshino/ha_copilot: A homeassisstant addon.
Is there any rule that I have to follow to make it work?

Did you add the repository to the add-on store ?

the repo add to the store, and the addon can be seen

but click the bagdet link, it still no find the addon

After adding it to the store, did you install it ?

Yes, it can be installed. But it does not work. Is this a clue?

I think there is no repository.json file in your repo.

I add the repository.json, but it still not work:(