feat: scaffold dirs with a noop miro init command

cmd/init.go

@@ -0,0 +1,23 @@
+package cmd
+
+import (
+	"strings"
+
+	"miro/internal/miro"
+	"miro/internal/output"
+)
+
+func runInit(args []string) int {
+	if len(args) != 0 {
+		output.Printf("unknown init option: %s\n", strings.Join(args, " "))
+		return 1
+	}
+
+	if err := miro.Init(); err != nil {
+		output.Printf("%v\n", err)
+		return 1
+	}
+
+	output.Println("Done initialising...")
+	return 0
+}

cmd/miro/main.go

@@ -0,0 +1,11 @@
+package main
+
+import (
+	"os"
+
+	"miro/cmd"
+)
+
+func main() {
+	os.Exit(cmd.Run(os.Args[1:]))
+}

cmd/root.go

@@ -0,0 +1,19 @@
+package cmd
+
+import "miro/internal/output"
+
+// Run parses top-level CLI args and returns a process exit code.
+func Run(args []string) int {
+	if len(args) == 0 {
+		output.Println("unknown command")
+		return 1
+	}
+
+	switch args[0] {
+	case "init":
+		return runInit(args[1:])
+	default:
+		output.Printf("unknown command: %s\n", args[0])
+		return 1
+	}
+}