/** Attribute only the synchronous load call. The diagnostics wrapper carries its label into completion. */
export function withDiagnosticSource<T>(source: string, action: () => T): T {
    const diagnostics = typeof window !== 'undefined' && (window as any).__memoryDiagnostics;
    if (diagnostics && diagnostics.enabled && typeof diagnostics.withSource === 'function') {
        return diagnostics.withSource(source, action);
    }
    return action();
}