feat(setup): interactive first-run wizard with LLM probe and systemd install

cmd/setup.go

@@ -0,0 +1,18 @@
+package cmd
+
+import (
+	"github.com/spf13/cobra"
+	"somegit.dev/vikingowl/reddit-reader/internal/setup"
+)
+
+var setupCmd = &cobra.Command{
+	Use:   "setup",
+	Short: "Interactive first-run setup wizard",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		return setup.Run()
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(setupCmd)
+}