I want to ask you change naming. Examples of naming:
hubapp_1.1.18_linux_amd64.tar.gz
rustdesk-1.4.2-0.aarch64-suse.rpm
So I suggest using not
binup-linux-x64-v1.6.1.tar.bz2
but
binup_1.6.1_linux_amd64.tar.bz2
I met such problem while testing downloading your app via hubapp
q@q:~$ ./hubapp install KonishchevDmitry/binup
✔ 1.6.1
2025/08/26 05:38:31 Creating directory for application: /home/q/.binup/
2025/08/26 05:38:31
No binaries found matching your computer's operating system or architecture.
Please verify user's releases for a valid binary.
The release binary should have the operating system and architecture in it's name.