fix: fix version log

[tefkah]

Problem

readium -v or readium version would output

readium version unknown (go-toolkit v0.11.0)

Now

After doing make build && ./readium -v, I get

readium version v0.4.1-0.20250917105946-b88dc06efc6b+dirty (go-toolkit v0.11.0)

Note that go run cmd/main.go -v will still show readium version unknown (go-toolkit v0.11.0), likely bc of the info.Main.Path being "" when running it that way

I don't know much about go, so this might be an incorrect way to fix this behavior, but it works!

[chocolatkey]

@tefkah thanks for the fix. This is likely happening because the version.Version variable is set during the init function which is run during the program startup, but after the value of rootCmd.Version is assigned, so it doesn't get the actual value. Because you removed the assignment to the Execute function, it runs after init so it works properly