Add version subcommand

Author: dce

README.md

@@ -75,6 +75,20 @@ The interactive UI supports:
 - Enter to select
 - q or Ctrl+C to quit
 
+### Subcommands
+
+- setup: First-time configuration wizard (writes `~/.tess/config.toml`).
+- doctor: Environment and API diagnostics.
+- version: Print the current version.
+
+Examples:
+
+```
+tess setup
+tess doctor
+tess version
+```
+
 ## Flags
 
 - `--config`: Path to config TOML (default: `~/.tess/config.toml`).

cmd/tess.go

@@ -100,7 +100,8 @@ func main() {
 		fmt.Fprintf(out, "  tess doctor\n\n")
 		fmt.Fprintf(out, "Subcommands:\n")
 		fmt.Fprintf(out, "  setup   First-time configuration wizard (writes ~/.tess/config.toml)\n")
-		fmt.Fprintf(out, "  doctor  Environment and API diagnostics\n\n")
+		fmt.Fprintf(out, "  doctor  Environment and API diagnostics\n")
+		fmt.Fprintf(out, "  version Print the current version\n\n")
 		fmt.Fprintf(out, "Flags:\n")
 		flag.PrintDefaults()
 	}
@@ -132,6 +133,9 @@ func main() {
 				os.Exit(code)
 			}
 			return
+		case "version":
+			fmt.Println(api.Version)
+			return
 		case "help":
 			flag.Usage()
 			return