feat(bonfire): Artisan help, examples, JSON listing and error hints

- help <command> and <command> --help print Description, Usage,
  Arguments, Options with defaults, Global options, Help and Examples
- Command.Examples and Command.Hidden (appended, additive); list --all
  shows hidden commands, list --format=json prints a bonfire.Listing
- CheckDocs reports commands lacking description, long help, examples or
  argument and option descriptions
- Error block with the ERROR badge, WithHint explanation and Try lines
  ({bin} replaced), cobra suggestions as Try, -v error chain, messages
  scrubbed by sunscreen; Reported errors print nothing and exit 1

modules/bonfire/execute.go

@@ -7,7 +7,6 @@ import (
 	"strings"
 
 	"charm.land/fang/v2"
-	"github.com/charmbracelet/colorprofile"
 	"github.com/spf13/cobra"
 )
 
@@ -50,10 +49,9 @@ func Execute(ctx context.Context, root *cobra.Command, args []string) int {
 		fang.WithoutManpage(),
 		fang.WithoutCompletions(),
 		fang.WithErrorHandler(func(w io.Writer, _ fang.Styles, err error) {
-			if cw, ok := w.(*colorprofile.Writer); ok {
-				// RenderError applies its own color profile.
-				w = cw.Forward
-			}
+			// fang hands over a colorprofile writer built from the
+			// environment only; RenderError unwraps it and applies
+			// --ansi and --no-ansi itself.
 			RenderError(w, name, err, g)
 		}),
 	)