feat: use new ui bubbletea

internal/provider/language_label.go

@@ -0,0 +1,30 @@
+package provider
+
+import (
+	"fmt"
+	"strings"
+
+	"golang.org/x/text/language"
+	"golang.org/x/text/language/display"
+)
+
+// LanguageLabel returns a human-readable label for a language code.
+// Example: "es" -> "Spanish (es)", "en-US" -> "English (United States) (en-US)".
+func LanguageLabel(code string) string {
+	if code == "" {
+		return ""
+	}
+
+	normalized := strings.ReplaceAll(code, "_", "-")
+	tag, err := language.Parse(normalized)
+	if err != nil {
+		return fmt.Sprintf("language '%s'", code)
+	}
+
+	name := display.English.Tags().Name(tag)
+	if name == "" || strings.EqualFold(name, code) {
+		return fmt.Sprintf("language '%s'", code)
+	}
+
+	return fmt.Sprintf("%s (%s)", name, code)
+}