Function apply_project_config_patch

src/automation/config.rs:282–292

Canonical load -> merge -> validate -> save pipeline for the project automation sidecar. Returns the merged project patch and the validated effective config; nothing is saved when validation fails.

(
    dashboard_root: &Path,
    global: &AutomationConfig,
    patch: AutomationConfigPatch,
)

/// automation sidecar. Returns the merged project patch and the validated
/// effective config; nothing is saved when validation fails.
pub async fn apply_project_config_patch(
    dashboard_root: &Path,
    global: &AutomationConfig,
    patch: AutomationConfigPatch,
) -> Result<(AutomationConfigPatch, AutomationConfig)> {
    let current = load_project_config(dashboard_root).await?;
    let project = merge_project_config(current, patch);
    let effective = effective_config(global, Some(&project))?;
    save_project_config(dashboard_root, &project).await?;
    Ok((project, effective))
}

pub fn validate_config(config: &AutomationConfig) -> Result<()> {
    if config.timeout_secs == 0 {