fix: textarea输入框 - 隐藏行号/移除提示符/Ctrl+J换行

internal/tui/app.go

@@ -68,9 +68,10 @@ func NewApp(cfg *config.Config, t *translator.Translator) *tea.Program {
 	ta := textarea.New()
 	ta.Placeholder = "输入要翻译的文本..."
 	ta.Focus()
-	ta.Prompt = "| "
+	ta.Prompt = ""
 	ta.SetWidth(50)
 	ta.SetHeight(5)
+	ta.ShowLineNumbers = false
 
 	return tea.NewProgram(model{
 		config:     cfg,
@@ -113,6 +114,10 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 			m.errMsg = ""
 			return m, m.doTranslate(text, m.targetLang)
 
+		case tea.KeyCtrlJ:
+			m.textArea, cmd = m.textArea.Update(msg)
+			return m, cmd
+
 		case tea.KeyCtrlC:
 			return m, tea.Quit