feat: add --version flag

Add --version flag support using cobra's built-in version functionality.
Version and build date are injected via ldflags at build time (already
configured in .goreleaser.yaml), with sensible defaults for dev builds.

Closes #52

Author: clarabennettdev

cmd/root.go

@@ -81,6 +81,12 @@ var rootCmd = &cobra.Command{
 	},
 }
 
+// SetVersionInfo sets the version information for the root command.
+func SetVersionInfo(version, buildDate string) {
+	rootCmd.Version = version
+	rootCmd.SetVersionTemplate(fmt.Sprintf("nomore403 version %s (built %s)\n", version, buildDate))
+}
+
 // Execute adds all child commands to the root command and sets flags appropriately.
 // This is called by main.main(). It only needs to happen once to the rootCmd.
 func Execute() {

main.go

@@ -4,6 +4,13 @@ package main
 
 import "github.com/devploit/nomore403/cmd"
 
+// Version and BuildDate are set via ldflags at build time.
+var (
+	Version   = "dev"
+	BuildDate = "unknown"
+)
+
 func main() {
+	cmd.SetVersionInfo(Version, BuildDate)
 	cmd.Execute()
 }