chore: bootstrap Go project with cobra skeleton

.gitignore

@@ -1,2 +1,9 @@
 .idea
 WokwiKey.txt
+
+# Go
+/archduino
+/dist/
+*.test
+*.out
+coverage.*

cmd/archduino/main.go

@@ -0,0 +1,45 @@
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+)
+
+var version = "dev"
+
+func main() {
+	root := &cobra.Command{
+		Use:           "archduino",
+		Short:         "Archduino installer and toolbox",
+		SilenceUsage:  true,
+		SilenceErrors: true,
+		Version:       version,
+	}
+
+	root.AddCommand(newInstallCmd())
+
+	if err := root.Execute(); err != nil {
+		fmt.Fprintln(os.Stderr, "error:", err)
+		os.Exit(1)
+	}
+}
+
+func newInstallCmd() *cobra.Command {
+	var noTUI bool
+	var dryRun bool
+	cmd := &cobra.Command{
+		Use:   "install",
+		Short: "Install or reconcile the Archduino toolset",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			// Foundation scaffold: real wiring lands in Task 11.
+			fmt.Println("archduino install (stub)")
+			fmt.Printf("  --no-tui=%v --dry-run=%v\n", noTUI, dryRun)
+			return nil
+		},
+	}
+	cmd.Flags().BoolVar(&noTUI, "no-tui", false, "plain-text output, no interactive UI")
+	cmd.Flags().BoolVar(&dryRun, "dry-run", false, "show planned actions without applying")
+	return cmd
+}

go.mod

@@ -0,0 +1,9 @@
+module github.com/MDietermann/ArduinoArchSetup
+
+go 1.26.2
+
+require (
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/spf13/cobra v1.10.2 // indirect
+	github.com/spf13/pflag v1.0.9 // indirect
+)

go.sum

@@ -0,0 +1,10 @@
+github.com/cpuguy83/go-md2man/v2 v2.0.6/go.mod h1:oOW0eioCTA6cOiMLiUPZOpcVxMig6NIQQ7OS05n1F4g=
+github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
+github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
+github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
+github.com/spf13/cobra v1.10.2 h1:DMTTonx5m65Ic0GOoRY2c16WCbHxOOw6xxezuLaBpcU=
+github.com/spf13/cobra v1.10.2/go.mod h1:7C1pvHqHw5A4vrJfjNwvOdzYu0Gml16OCs2GRiTUUS4=
+github.com/spf13/pflag v1.0.9 h1:9exaQaMOCwffKiiiYk6/BndUBv+iRViNW+4lEMi0PvY=
+github.com/spf13/pflag v1.0.9/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
+go.yaml.in/yaml/v3 v3.0.4/go.mod h1:DhzuOOF2ATzADvBadXxruRBLzYTpT36CKvDb3+aBEFg=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=