feat(cli): add version command for displaying FTL version

Author: yarlson

.goreleaser.yaml

@@ -15,7 +15,7 @@ builds:
       - amd64
       - arm64
     ldflags:
-      - -s -w -X main.version={{.Version}}
+      - -s -w -X github.com/yarlson/ftl/cmd.version={{.Version}}
 
 archives:
   - id: release_archive

README.md

@@ -44,6 +44,14 @@ sudo mv ftl /usr/local/bin/
 go install github.com/yarlson/ftl@latest
 ```
 
+### Verify Installation
+
+After installing FTL, verify it's working correctly by checking the version:
+
+```bash
+ftl version
+```
+
 ## Configuration
 
 Create an `ftl.yaml` file in your project root:

cmd/version.go

@@ -0,0 +1,23 @@
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+)
+
+// version is set during build time
+var version = "dev"
+
+var versionCmd = &cobra.Command{
+	Use:   "version",
+	Short: "Print the version number of FTL",
+	Long:  `Print the version number of FTL deployment tool`,
+	Run: func(cmd *cobra.Command, args []string) {
+		fmt.Printf("FTL version %s\n", version)
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(versionCmd)
+}