add language picker dropdown to TUI with filtering and model compatibility warnings

internal/tui/configure_transcription.go

@@ -125,13 +125,17 @@ func editTranscription(cfg *config.Config, configuredProviders []string) ([]stri
 		modelDesc = fmt.Sprintf("Currently: %s", cfg.Transcription.Model)
 	}
 
-	language := cfg.Transcription.Language
+	selectedLanguage := cfg.Transcription.Language
 
-	langDesc := "ISO-639-1 code (e.g., 'en', 'es', 'fr') or empty for auto-detect"
-	if cfg.Transcription.Language != "" {
-		langDesc = fmt.Sprintf("Currently: %s. %s", cfg.Transcription.Language, langDesc)
+	// get current model for language compatibility warnings
+	var currentModel *provider.Model
+	registryName := mapConfigProviderToRegistry(selectedProvider)
+	if m, err := provider.GetModel(registryName, selectedModel); err == nil {
+		currentModel = m
 	}
 
+	languageOptions := getLanguageOptions(currentModel)
+
 	modelForm := huh.NewForm(
 		huh.NewGroup(
 			huh.NewSelect[string]().
@@ -139,11 +143,12 @@ func editTranscription(cfg *config.Config, configuredProviders []string) ([]stri
 				Description(modelDesc).
 				Options(modelOptions...).
 				Value(&selectedModel),
-			huh.NewInput().
+			huh.NewSelect[string]().
 				Title("Language").
-				Description(langDesc).
-				Placeholder("auto-detect").
-				Value(&language),
+				Description("Select language for transcription").
+				Options(languageOptions...).
+				Filtering(true).
+				Value(&selectedLanguage),
 		),
 	).WithTheme(getTheme())
 
@@ -203,7 +208,7 @@ func editTranscription(cfg *config.Config, configuredProviders []string) ([]stri
 	}
 
 	cfg.Transcription.Model = selectedModel
-	cfg.Transcription.Language = language
+	cfg.Transcription.Language = selectedLanguage
 
 	return configuredProviders, nil
 }

internal/tui/languages.go

@@ -0,0 +1,40 @@
+package tui
+
+import (
+	"fmt"
+
+	"github.com/charmbracelet/huh"
+	"github.com/leonardotrapani/hyprvoice/internal/language"
+	"github.com/leonardotrapani/hyprvoice/internal/provider"
+)
+
+// getLanguageOptions returns language options for the dropdown
+// if currentModel is provided, languages unsupported by that model will be marked
+func getLanguageOptions(currentModel *provider.Model) []huh.Option[string] {
+	var options []huh.Option[string]
+
+	// auto-detect is always first and recommended
+	options = append(options, huh.NewOption("Auto-detect (Recommended)", ""))
+
+	// add all languages
+	for _, lang := range language.List() {
+		label := formatLanguageLabel(lang)
+
+		// add warning if model doesn't support this language
+		if currentModel != nil && !currentModel.SupportsLanguage(lang.Code) {
+			label += " (not supported by current model)"
+		}
+
+		options = append(options, huh.NewOption(label, lang.Code))
+	}
+
+	return options
+}
+
+// formatLanguageLabel formats a language for display
+func formatLanguageLabel(lang language.Language) string {
+	if lang.Name == lang.NativeName || lang.NativeName == "" {
+		return fmt.Sprintf("%s (%s)", lang.Name, lang.Code)
+	}
+	return fmt.Sprintf("%s - %s (%s)", lang.Name, lang.NativeName, lang.Code)
+}