feat: scaffold Go module with version command, Makefile and goreleaser config

internal/cli/root.go

@@ -0,0 +1,44 @@
+// Package cli wires the agent-lib command tree: vendor (curator side),
+// sync/status (client side) and version.
+package cli
+
+import (
+	"fmt"
+	"io"
+	"runtime"
+
+	"github.com/spf13/cobra"
+
+	"github.com/m3tam3re/agent-lib/internal/version"
+)
+
+func NewRootCmd() *cobra.Command {
+	root := &cobra.Command{
+		Use:           "agent-lib",
+		Short:         "Curated agent content: vendor external sources, sync to OpenCode",
+		SilenceUsage:  true,
+		SilenceErrors: true,
+	}
+	root.AddCommand(newVersionCmd())
+	return root
+}
+
+func newVersionCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "version",
+		Short: "Print the agent-lib version",
+		Args:  cobra.NoArgs,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return printVersion(cmd.OutOrStdout())
+		},
+	}
+}
+
+func printVersion(w io.Writer) error {
+	_, err := fmt.Fprintf(w, "agent-lib %s (%s/%s)\n", version.Version, runtime.GOOS, runtime.GOARCH)
+	return err
+}
+
+func Execute() error {
+	return NewRootCmd().Execute()
+}