Mark as read not available for channels

[Cougar16]

Hi, the gallery button is not available in channels so we can't mark them as read, thanks to fix that by chosing another indicator for this feature !

Best regards to the dev team 💯

[ReSo7200]

Hi, I have added an option, will be pushed with 0.5

[ReSo7200]

https://github.com/ReSo7200/InstaEclipse/actions/runs/23764268117