feat: use new ui bubbletea

internal/transcriber/deepgram_language.go

@@ -0,0 +1,15 @@
+package transcriber
+
+import "strings"
+
+func normalizeDeepgramLanguage(code string) string {
+	if code == "" {
+		return ""
+	}
+
+	if strings.EqualFold(code, "en") || strings.EqualFold(code, "en-us") || strings.EqualFold(code, "en_us") {
+		return "en-US"
+	}
+
+	return code
+}