Bring back the spacer for layout consistency

Adding the working indicator would move all the contents down one line,
bring back the spacer so that this doesn't happen.

This only fixes for the working indicator, not the RAG

Signed-off-by: Djordje Lukic <djordje.lukic@docker.com>

Author: rumpl

pkg/tui/components/sidebar/sidebar.go

@@ -286,6 +286,8 @@ func (m *model) verticalView() string {
 	}
 	if working := m.workingIndicator(); working != "" {
 		session = append(session, working)
+	} else {
+		session = append(session, "") // spacer for layout consistency
 	}
 
 	var main []string
@@ -306,7 +308,7 @@ func (m *model) verticalView() string {
 		main = append(main, todoContent)
 	}
 
-	return strings.Join(main, "\n\n")
+	return strings.Join(main, "\n")
 }
 
 func (m *model) workingIndicator() string {
@@ -397,7 +399,6 @@ func (m *model) workingIndicatorHorizontal() string {
 	if m.working {
 		labels = append(labels, "Working…")
 	}
-
 	// Add MCP init indicator if initializing
 	if m.mcpInit {
 		labels = append(labels, "Initializing MCP servers…")