优化: 品牌升级U-TABS，默认打开历史对话

internal/app.go

@@ -39,7 +39,7 @@ type Model struct {
 
 func NewModel() *Model {
 	return &Model{
-		activeGroup: 0,
+		activeGroup: len(Groups), // 默认打开历史对话
 		selected:    make(map[int]bool),
 	}
 }
@@ -182,10 +182,6 @@ func (m *Model) handleWorkspaceKey(s string) (*Model, tea.Cmd) {
 		} else {
 			return m.launchSelected()
 		}
-	case " ":
-		if m.wsFocus == 1 {
-			m.toggleMultiSelect()
-		}
 	default:
 		if len(s) == 1 && s[0] >= '0' && s[0] <= '9' {
 			m.inputBuf += s
@@ -487,14 +483,14 @@ func (m *Model) View() tea.View {
 	v := tea.NewView(m.render())
 	v.AltScreen = true
 	v.MouseMode = tea.MouseModeCellMotion
-	v.WindowTitle = "u-tabs"
+	v.WindowTitle = "U-TABS"
 	return v
 }
 
 // renderTabBar 顶部两个主 tab：工作空间 / 历史对话
 func (m *Model) renderTabBar() string {
 	var b strings.Builder
-	b.WriteString(style.TitleStyle.Render(" u-tabs v" + Version + " "))
+	b.WriteString(style.TitleStyle.Render(" U-TABS "))
 	sep := style.TabSep.Render(" │ ")
 
 	// Tab 1: 工作空间
@@ -566,7 +562,14 @@ func (m *Model) render() string {
 	b.WriteString("\n")
 
 	helpParts := m.renderHelp()
-	b.WriteString(" " + strings.Join(helpParts, "  "))
+	helpStr := " " + strings.Join(helpParts, "  ")
+	verStr := lipgloss.NewStyle().Foreground(style.Dim).Render("绝尘 v" + Version)
+	padW := m.width - lipgloss.Width(helpStr) - lipgloss.Width(verStr)
+	if padW > 0 {
+		b.WriteString(helpStr + strings.Repeat(" ", padW) + verStr)
+	} else {
+		b.WriteString(helpStr + "  " + verStr)
+	}
 
 	if hint := ConfigHint(); hint != "" {
 		b.WriteString("\n" + hint)
@@ -577,7 +580,7 @@ func (m *Model) render() string {
 func (m *Model) renderHelp() []string {
 	if m.IsHistoryTab() {
 		return []string{
-			m.fmtHelp("j/k", "sel"),
+			m.fmtHelp("↑↓", "sel"),
 			m.fmtHelp("←→", "panel"),
 			m.fmtHelp("Enter", "resume"),
 			m.fmtHelp("f", "star"),
@@ -589,9 +592,8 @@ func (m *Model) renderHelp() []string {
 	}
 	return []string{
 		m.fmtHelp("←→", "col"),
-		m.fmtHelp("j/k", "sel"),
+		m.fmtHelp("↑↓", "sel"),
 		m.fmtHelp("Enter", "run"),
-		m.fmtHelp("Space", "multi"),
 		m.fmtHelp("2", "history"),
 		m.fmtHelp("q", "quit"),
 	}