feat(bonfire): global flags, Artisan list and exit codes

- Global options -v/-vv/-vvv, -q, --ansi/--no-ansi, -n and --env on every
  command; PeekGlobals reads them before config loads, OnGlobals hooks
  re-apply them after parsing (diary.ApplyGlobals in the generated main)
- Bare binary, --help and list print the Artisan list with the version
  header from BuildVersion and namespace blocks
- Execute runs the root through fang (no version, man page or completions)
  and returns 0, 1 or 2; Fail renders errors before the root exists
- NewRoot rejects duplicate command names (ErrDuplicateCommand) and flags
  that reuse a global option (ErrReservedFlag)
- Generated main and summer use PeekGlobals, compass.Open with --env,
  diary.FromGlobals and bonfire.Execute; docs checker knows the globals

internal/build/testdata/new/main.go.golden

@@ -3,7 +3,7 @@
 package main
 
 import (
-	"fmt"
+	"context"
 	"io"
 	"os"
 
@@ -20,25 +20,23 @@ import (
 )
 
 func main() {
-	if err := run(os.Args[1:], os.Stdout); err != nil {
-		fmt.Fprintln(os.Stderr, err)
-		os.Exit(1)
-	}
+	os.Exit(run(os.Args[1:], os.Stdout))
 }
 
-func run(args []string, out io.Writer) error {
-	diary.Bootstrap(os.Stderr, diary.Options{})
-	cfg, err := compass.Load("config")
+func run(args []string, out io.Writer) int {
+	g := bonfire.PeekGlobals(args)
+	diary.Bootstrap(os.Stderr, diary.FromGlobals(g))
+	cfg, err := compass.Open(compass.Options{Dir: "config", Env: g.Env})
 	if err != nil {
-		return err
+		return bonfire.Fail(os.Stderr, "demo", err, g)
 	}
-	if err := diary.Setup(cfg, diary.Options{}); err != nil {
-		return err
+	if err := diary.Setup(cfg, diary.FromGlobals(g)); err != nil {
+		return bonfire.Fail(os.Stderr, "demo", err, g)
 	}
 	app := backpack.New(cfg)
 	plugins, err := party.Activate(app, PluginIDs)
 	if err != nil {
-		return err
+		return bonfire.Fail(os.Stderr, "demo", err, g)
 	}
 	commands := lagoon.RuntimeCommands(app, plugins)
 	commands = append(commands, conga.RuntimeCommands(app, plugins)...)
@@ -51,12 +49,11 @@ func run(args []string, out io.Writer) error {
 		}
 	}
 	if err := app.Publish(bonfire.NewCatalog(commands)); err != nil {
-		return err
+		return bonfire.Fail(os.Stderr, "demo", err, g)
 	}
-	root, err := bonfire.NewRoot("demo", commands, out)
+	root, err := bonfire.NewRoot("demo", commands, out, bonfire.WithVersion(bonfire.BuildVersion()), bonfire.OnGlobals(diary.ApplyGlobals))
 	if err != nil {
-		return err
+		return bonfire.Fail(os.Stderr, "demo", err, g)
 	}
-	root.SetArgs(args)
-	return root.Execute()
+	return bonfire.Execute(context.Background(), root, args)
 }