feat: use new ui bubbletea

internal/transcriber/adapter_deepgram.go

@@ -230,8 +230,9 @@ func (a *DeepgramAdapter) buildURL() (string, error) {
 	q.Set("punctuate", "true")
 
 	// add language if specified
-	if a.language != "" {
-		q.Set("language", a.language)
+	lang := normalizeDeepgramLanguage(a.language)
+	if lang != "" {
+		q.Set("language", lang)
 	}
 
 	if len(a.keywords) > 0 {

internal/transcriber/adapter_deepgram_batch.go

@@ -118,8 +118,9 @@ func (a *DeepgramBatchAdapter) buildURL() (string, error) {
 	q.Set("punctuate", "true")
 
 	// add language if specified
-	if a.language != "" {
-		q.Set("language", a.language)
+	lang := normalizeDeepgramLanguage(a.language)
+	if lang != "" {
+		q.Set("language", lang)
 	}
 
 	if len(a.keywords) > 0 {

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
+}