Implement spacer skipping in navigation tree

cmd/tui/model.go

@@ -31,6 +31,14 @@ type ListItem struct {
 	User    *UserNode
 }
 
+func (l ListItem) IsSpacer() bool {
+	if l.IsUser || l.Channel == nil {
+		return false
+	}
+	// TeamSpeak spacers usually look like [spacer0], [*spacer1], etc.
+	return strings.Contains(strings.ToLower(l.Channel.Name), "[spacer")
+}
+
 // ChatMessage represents a message in the chat
 type ChatMessage struct {
 	Time    time.Time
@@ -503,6 +511,35 @@ func (m *Model) updateChannelList(channels []*ts3client.Channel) {
 			}
 		}
 	}
+
+	// Ensure selectedIdx is valid (not on a spacer)
+	if len(m.items) > 0 {
+		if m.selectedIdx >= len(m.items) {
+			m.selectedIdx = len(m.items) - 1
+		}
+
+		// If current is a spacer, find next valid one
+		if m.items[m.selectedIdx].IsSpacer() {
+			found := false
+			// Try going down
+			for i := m.selectedIdx; i < len(m.items); i++ {
+				if !m.items[i].IsSpacer() {
+					m.selectedIdx = i
+					found = true
+					break
+				}
+			}
+			// If not found, try going up
+			if !found {
+				for i := m.selectedIdx; i >= 0; i-- {
+					if !m.items[i].IsSpacer() {
+						m.selectedIdx = i
+						break
+					}
+				}
+			}
+		}
+	}
 }
 
 func (m *Model) handleKeyPress(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
@@ -673,17 +710,37 @@ func (m *Model) handleUserViewKeys(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 func (m *Model) handleChannelKeys(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 	switch msg.String() {
 	case "up", "k":
-		if m.selectedIdx > 0 {
+		for m.selectedIdx > 0 {
 			m.selectedIdx--
+			if !m.items[m.selectedIdx].IsSpacer() {
+				break
+			}
+			// If we hit the top and it's a spacer, we might need to go down to find the first valid one
+			if m.selectedIdx == 0 && m.items[m.selectedIdx].IsSpacer() {
+				// Search forward for the first valid one
+				for i := 0; i < len(m.items); i++ {
+					if !m.items[i].IsSpacer() {
+						m.selectedIdx = i
+						break
+					}
+				}
+				break
+			}
 		}
 	case "down", "j":
-		if m.selectedIdx < len(m.items)-1 {
+		for m.selectedIdx < len(m.items)-1 {
 			m.selectedIdx++
+			if !m.items[m.selectedIdx].IsSpacer() {
+				break
+			}
 		}
 	case "enter":
 		// Join selected channel OR open user view
 		if m.selectedIdx < len(m.items) && m.client != nil {
 			item := m.items[m.selectedIdx]
+			if item.IsSpacer() {
+				return m, nil // Do nothing for spacers
+			}
 			if !item.IsUser {
 				// Channel
 				ch := item.Channel