pub fn label_create_argv(slug: &str, spec: &LabelSpec) -> Vec<String>Expand description
Argv for gh label create <name> --color <hex> [--description <desc>] --force --repo <slug>.
The --force flag is the key contract bit: GitHub’s CLI uses it
to mean “create OR update”, which is exactly what gwm labels push needs (no separate “edit” call). When description is
None we omit the flag entirely rather than pass "" — gh would
otherwise wipe an existing description that the user didn’t intend
to touch.