Development record

The statusline sentence 'Writes nothing; never refuses.' (internal/core/surface/sentences.go:416-417, shown at docs/reference/cli/commands.md:4829) is false for an operand. The command declares Args: cobra.NoArgs (internal/surface/cli/statusline.go:137), so abcd statusline x is refused with a usage error, and decideStatus returns an error when the working directory cannot be read (statusline.go:221).