Function assert

scripts/e2e-real-data.ts:19–27

(condition: boolean, label: string, detail?: string)

let passes = 0;

function assert(condition: boolean, label: string, detail?: string) {
  if (condition) {
    passes++;
    console.log(`  PASS  ${label}`);
  } else {
    failures++;
    console.error(`  FAIL  ${label}${detail ? ' — ' + detail : ''}`);
  }
}

function section(name: string) {
  console.log(`\n=== ${name} ===`);