Report the embedded release version

internal/app/version.go

@@ -0,0 +1,17 @@
+package app
+
+import (
+	"fmt"
+	"io"
+
+	"gitea.maximumdirect.net/eric/narratio/internal/buildinfo"
+)
+
+// Version prints the version embedded in the current Narratio binary.
+func Version(args []string, out io.Writer) error {
+	if len(args) != 0 {
+		return fmt.Errorf("version: unexpected arguments")
+	}
+	_, err := fmt.Fprintf(out, "narratio %s\n", buildinfo.Version)
+	return err
+}