Function resolve_setup_scope 

pub fn resolve_setup_scope(
    tenant: String,
    team: Option<String>,
    env: String,
    loaded: &LoadedAnswers,
) -> (String, Option<String>, String)

Resolve tenant/team/env for setup.

When CLI values are still defaults (demo, unset team, dev) and an answers file includes tenant/team/env metadata, prefer metadata values. Also detects tenant from existing bundle tenants/ directory when neither CLI nor answers provide a tenant.