Note

Bumps to v1.21.1, updates docs/CLI assets and templates to new version, corrects --check help text, adds changelog, and refreshes lockfile deps.

• Release/Versioning
  • Set crate/app version to 1.21.1 (Cargo.toml, hk.usage.kdl, docs) and add CHANGELOG.md entry.
• Docs/CLI
  • Update all pkl amends/import URLs to v1.21.1 across docs and examples.
  • Fix --check help text to “Run check command instead of fix command” in docs, commands.json, and KDL usage.
  • Update CLI docs version strings to 1.21.1.
• Templates/Init
  • Update hk init generated hk.pkl template to reference v1.21.1.
  • Adjust example/error messages to reference v1.21.1.
• Dependencies
  • Refresh Cargo.lock (e.g., clap/clap_builder → 4.5.52, unit-prefix → 0.5.2).

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