Function auto_load_retry_delay 

pub fn auto_load_retry_delay(
    attempt: u32,
    base_secs: f64,
    max_secs: f64,
) -> Duration

Computes the auto-load retry sleep duration for attempt.

Matches the Python adapter’s auto_load_retry_delay formula: takes base_secs * 2^attempt, caps at max_secs, then adds positive jitter of up to 25% of the capped value. Jitter decorrelates concurrent retries after a venue lifecycle race so they do not all rehit Gamma at the same instant.