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

cmd/summer/docs_test.go

@@ -401,12 +401,12 @@ func first(lines []string) string {
 
 func TestDocsCommandNames(t *testing.T) {
 	cmds := docsCommands()
-	for _, want := range []string{"docs:build", "make:plugin", "migrate:status"} {
+	for _, want := range []string{"docs:build", "make:plugin", "migrate:status", "list", "help"} {
 		if !slices.Contains(cmds.Tool, want) {
 			t.Errorf("Tool is missing %s: %v", want, cmds.Tool)
 		}
 	}
-	for _, want := range []string{"key:generate", "route:list", "admin:create", "queue:clear", "websockets:health"} {
+	for _, want := range []string{"key:generate", "route:list", "admin:create", "queue:clear", "websockets:health", "list", "help"} {
 		if !slices.Contains(cmds.App, want) {
 			t.Errorf("App is missing %s: %v", want, cmds.App)
 		}