cli: make bundled help self-describing

packages/repo-memory-runtime/cmd/repo-memory/execute.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"io"
 	"os"
+	"strings"
 	"sync"
 )
 
@@ -30,6 +31,21 @@ func Execute(args []string, stdout, stderr io.Writer) int {
 		usage()
 		return 2
 	}
+	if args[0] == "help" {
+		if len(args) == 1 {
+			usage()
+			return 0
+		}
+		if err := runCommand([]string{args[1], "--help"}); err != nil {
+			_, _ = fmt.Fprintln(commandStderr, err)
+			return 1
+		}
+		return 0
+	}
+	if isHelpToken(args[0]) {
+		usage()
+		return 0
+	}
 
 	if err := runCommand(args); err != nil {
 		_, _ = fmt.Fprintln(commandStderr, err)
@@ -39,6 +55,15 @@ func Execute(args []string, stdout, stderr io.Writer) int {
 	return 0
 }
 
+func isHelpToken(value string) bool {
+	switch strings.TrimSpace(value) {
+	case "-h", "--help":
+		return true
+	default:
+		return false
+	}
+}
+
 func runCommand(args []string) error {
 	switch args[0] {
 	case "init":