chore: tui style tweaks

packages/tui/internal/components/chat/editor.go

@@ -115,7 +115,7 @@ func (m *editorComponent) View() string {
 		PaddingBottom(1).
 		Background(t.BackgroundElement()).
 		Border(lipgloss.ThickBorder(), false, true).
-		BorderForeground(t.BackgroundSubtle()).
+		BorderForeground(t.BackgroundElement()).
 		BorderBackground(t.Background()).
 		Render(textarea)
 

packages/tui/internal/components/chat/messages.go

@@ -266,7 +266,7 @@ func (m *messagesComponent) header() string {
 		BorderLeft(true).
 		BorderRight(true).
 		BorderBackground(t.Background()).
-		BorderForeground(t.BackgroundSubtle()).
+		BorderForeground(t.BackgroundElement()).
 		BorderStyle(lipgloss.ThickBorder()).
 		Render(header)