Function resolve_token 

pub async fn resolve_token(port: &impl AuthPort) -> Result<String, AuthError>

Resolve a live access-token string from an AuthPort.

1. Calls load_token().
2. If the token is expired, calls refresh_token().
3. Returns the raw access token string, ready to be injected into a request.

Errors

Returns Err if no token exists, storage is unavailable, or refresh fails.

Example

let auth = Env;
let token = resolve_token(&auth).await?;
println!("Bearer {token}");