add-element and add-group-with-fields built their baseline form with an
InputField whose DataPath pointed to "Поле1", but "Поле1" was never
declared as a form attribute. runner.mjs snapshot diffing accepted the
output, but verify-snapshots caught the real XDTO error at load time:
"Неверный путь к данным: Поле1".
Add the missing attribute to both preRun form-compile inputs and
regenerate snapshots (the new attribute takes id=5, so form-edit's added
"Поле2" now lands at id=6).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>