- CLAUDE.md: update error wrapping convention from fmt.Errorf to coreerr.E()
- cmd/build: fix RegisterCommands API mismatch (cli v0.3.5 compat)
- locales: self-register translations via i18n.RegisterLocales in init()
- cmd/sdk: replace fmt.Printf with cli.Print for consistent output
- cmd/build/cmd_pwa: replace os.Stat with coreio.Local.IsDir
- pkg/build/builders: replace os.Stat with io.Local.IsFile for CLI checks
- pkg/release/publishers/scoop: replace os.Stat with coreio.Local.IsDir
- pkg/api: add tests for getBuilder, resolveDir, and medium initialisation
Co-Authored-By: Virgil <virgil@lethean.io>