{"id":"leading-zero-rejection","text":"Any numeric segment in `abbr` starting with `'0'` causes `validWordAbbreviation` to immediately return `False`, including standalone `0` (semantically meaningless \"skip zero characters\").","truth_value":"IN","source":"entries/2026/06/06/valid-word-abbreviation-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"leading-zero-rejection","truth_value":"IN","reason":"premise"}]}}