implement editLanguage function in TUI with model compatibility warning

internal/tui/configure_language.go

@@ -1,11 +1,85 @@
 package tui
 
 import (
+	"fmt"
+
+	"github.com/charmbracelet/huh"
 	"github.com/leonardotrapani/hyprvoice/internal/config"
+	"github.com/leonardotrapani/hyprvoice/internal/language"
+	"github.com/leonardotrapani/hyprvoice/internal/provider"
 )
 
 // editLanguage allows the user to select the global transcription language
 func editLanguage(cfg *config.Config) error {
-	// implementation in task 5
+	// no model-specific warnings for global language selection
+	languageOptions := getLanguageOptions(nil)
+
+	selectedLanguage := cfg.General.Language
+
+	form := huh.NewForm(
+		huh.NewGroup(
+			huh.NewSelect[string]().
+				Title("Language").
+				Description("Select language for transcription (applies globally)").
+				Options(languageOptions...).
+				Filtering(true).
+				Value(&selectedLanguage),
+		),
+	).WithTheme(getTheme())
+
+	if err := form.Run(); err != nil {
+		return err
+	}
+
+	// check if current transcription model supports the selected language
+	if selectedLanguage != "" && cfg.Transcription.Provider != "" && cfg.Transcription.Model != "" {
+		registryName := mapConfigProviderToRegistry(cfg.Transcription.Provider)
+		model, err := provider.GetModel(registryName, cfg.Transcription.Model)
+		if err == nil && !model.SupportsLanguage(selectedLanguage) {
+			langName := language.FromCode(selectedLanguage).Name
+			if langName == "" {
+				langName = selectedLanguage
+			}
+
+			fmt.Println()
+			fmt.Println(StyleWarning.Render("Language-Model Compatibility Warning"))
+			fmt.Printf("Your current model '%s' does not support %s.\n", model.Name, langName)
+			fmt.Println()
+			fmt.Println(StyleMuted.Render("You can:"))
+			fmt.Println(StyleMuted.Render("  - Keep this language and change the model later"))
+			fmt.Println(StyleMuted.Render("  - Use 'Auto-detect' for language"))
+			fmt.Println(StyleMuted.Render("  - Choose a different language"))
+			fmt.Println()
+
+			var action string
+			actionForm := huh.NewForm(
+				huh.NewGroup(
+					huh.NewSelect[string]().
+						Title("What would you like to do?").
+						Options(
+							huh.NewOption("Keep this language (change model later)", "keep"),
+							huh.NewOption("Use Auto-detect instead", "auto"),
+							huh.NewOption("Choose a different language", "retry"),
+						).
+						Value(&action),
+				),
+			).WithTheme(getTheme())
+
+			if err := actionForm.Run(); err != nil {
+				return err
+			}
+
+			switch action {
+			case "auto":
+				selectedLanguage = ""
+			case "retry":
+				return editLanguage(cfg)
+			case "keep":
+				// proceed with incompatible language
+			}
+		}
+	}
+
+	cfg.General.Language = selectedLanguage
 	return nil
 }

progress.txt

@@ -536,4 +536,14 @@ Started: Sun Feb  1 12:22:47 AM CET 2026
 - Shows "Language (Auto-detect)" when empty, "Language ({name})" when set
 - Added case SectionLanguage in runEditExisting switch calling editLanguage()
 - Created stub configure_language.go with editLanguage() function (implementation in Task 5)
+- All tests passing, typecheck passes
+
+### Task 5: Create editLanguage function in TUI
+- Implemented `editLanguage(cfg *config.Config)` in configure_language.go
+- Uses `getLanguageOptions(nil)` for 58 options (57 languages + Auto-detect)
+- huh.NewSelect with `.Filtering(true)` for searchable language picker
+- Saves selected language to `cfg.General.Language`
+- Checks if current transcription model supports selected language via `provider.GetModel()` + `model.SupportsLanguage()`
+- Shows warning dialog with 3 options: keep incompatible language, use auto-detect, or choose different language
+- Recursive retry flow if user chooses "Choose a different language"
 - All tests passing, typecheck passes

tasks/prd.jsonc

@@ -81,7 +81,7 @@
 				"Warning shown if current model doesn't support selected language",
 				"Typecheck passes"
 			],
-			"passes": false
+			"passes": true
 		},
 		{
 			"title": "Remove language from transcription edit flow",