Change only starter/ship_check.py. Standard library only. Never modify the scenario projects except through copies.

• run_checks(command, cwd) -> dict: run [sys.executable, *command] in cwd, capture output, and return {"command": " ".join(command), "exit_code": int, "ran": int, "result": str}:
  • ran is the test count parsed from Ran N tests in ....
  • result is "no-tests" when ran == 0 (regardless of exit code — modern Pythons exit nonzero for "NO TESTS RAN"), "failed" when the exit code is nonzero, otherwise "ok".
• build_record(checks, *, verified_on, unverified=None) -> dict: {"verified_on", "checks", "all_passed", "unverified"} where all_passed is true only when every check has exit code 0 AND result "ok" (zero-test projects never pass), and unverified defaults to an empty list.
• write_record(record, destination): write JSON (UTF-8, indent 2, trailing newline) atomically via a sibling temp file plus os.replace; create missing parent directories; never leave a .tmp file on success.
• run_project(project_dir, *, verified_on) -> dict: read ship.json (command, optional unverified), run the checks in the project directory, build the record, write SHIP-RECORD.json there, return it.
• main(argv=None) -> int:
  • ship_check.py <project-dir> [--verified-on YYYY-MM-DD]; otherwise print usage to stderr and return 2. Without --verified-on use today's date.
  • Print all_passed=... checks=... to stdout; return 0 when all_passed, otherwise 1.

Done means python verify.py starter exits 0 with all ten tests passing.