feat: add version command to display kcm version from version file

src/commands/cmd_version.go

@@ -0,0 +1,37 @@
+package commands
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"github.com/spf13/cobra"
+)
+
+// NewVersionCmd returns the cobra command for `kcm version`
+func NewVersionCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "version",
+		Short: "Show kcm version",
+		Run: func(cmd *cobra.Command, args []string) {
+			version := getVersionFromFile()
+			fmt.Println(version)
+		},
+	}
+}
+
+// getVersionFromFile tries to find and read the kcm.version file next to the binary, or in /usr/local/share/kcm
+func getVersionFromFile() string {
+	binPath, err := os.Executable()
+	if err == nil {
+		localVersion := filepath.Join(filepath.Dir(binPath), "kcm.version")
+		if data, err := os.ReadFile(localVersion); err == nil {
+			return string(data)
+		}
+	}
+	// fallback to global install location
+	if data, err := os.ReadFile("/usr/local/share/kcm/kcm.version"); err == nil {
+		return string(data)
+	}
+	return "unknown version"
+}

src/main.go

@@ -55,6 +55,7 @@ func main() {
 		commands.NewCopyCmd(history),
 		commands.NewSearchCmd(history),
 		commands.NewStatusCmd(),
+		commands.NewVersionCmd(),
 	)
 
 	if err := rootCmd.Execute(); err != nil {