# b64chain — Changelog

## v1.0.3 — 2026-06-22

- Standardise exit codes per SUITE_STANDARDS.md §1 — clap usage errors and missing-subcommand now exit 2 (was 3). Usage-shaped runtime errors (unknown encoding / 'missing' / 'No input') now exit 2 (was 3); other runtime errors now exit 3 (was 2). The two codes were inverted relative to the rest of the suite.