pub fn resolve_credential_store(
app_id: &str,
var: impl Fn(&str) -> Option<String>,
) -> CredentialStoreExpand description
Resolves the effective CredentialStore for app_id against process state.
Reads the CLI-flag override (credential_store_flag), the
${PREFIX}_CREDENTIAL_STORE env var via the injected var getter, and the
config file (load), then applies resolve_credential_store_with. The
var getter is injected so callers/tests can supply environment lookups
without mutating the process environment.