Function edit_prompt 

pub(crate) fn edit_prompt(
    metric_name: &str,
    goal: &str,
    goal_description: Option<&str>,
    best_value: Option<f64>,
    history: &[RoundRecord],
    attempt_memory: Option<&str>,
    last_verdict_json: &str,
    crate_diff: &str,
    build_errors: Option<&str>,
    note: Option<&str>,
    plan: Option<&str>,
) -> String

The coder is handed exactly the planner’s plan - nothing else. Build-fix and runtime-fix rounds have no plan, so they fall back to the round context plus the failure to repair.