Update tui error handling

- Allow each view to position error banners where they choose
- Add global 'esc' key handler to dismiss errors

pkg/tui/shared/shared.go

@@ -13,7 +13,7 @@ type ViewModel interface {
 	// View methods
 	Header(width int) string
 	// Render the view's main content into a container of the given dimensions
-	Content(width, height int) string
+	Content(width, height int, errors string) string
 	Footer(width int) string
 }
 

pkg/tui/tui.go

@@ -60,6 +60,14 @@ func (m *Model) Init() tea.Cmd {
 }
 
 func (m *Model) handleGlobalInput(msg tea.KeyMsg) tea.Cmd {
+	switch msg.String() {
+	case "esc":
+		if len(m.errs) > 0 {
+			m.errs = m.errs[1:]
+			return shared.KeyHandled(msg)
+		}
+	}
+
 	view, cmd := m.views[m.activeView].Update(msg)
 	m.views[m.activeView] = view
 	if cmd != nil {
@@ -108,10 +116,16 @@ func (m *Model) View() string {
 	errBanners := make([]string, len(m.errs))
 	for idx, err := range m.errs {
 		errBanners[idx] = tuiutil.ErrorBanner(err, m.width)
-		fixedUIHeight += tuiutil.Height(errBanners[idx])
 	}
+	var errors string
+	if len(errBanners) > 0 {
+		errors = lipgloss.JoinVertical(lipgloss.Left, errBanners...)
+	} else {
+		errors = ""
+	}
+	fixedUIHeight += tuiutil.Height(errors)
 
-	content := m.views[m.activeView].Content(m.width, m.height-fixedUIHeight)
+	content := m.views[m.activeView].Content(m.width, m.height-fixedUIHeight, errors)
 
 	sections := make([]string, 0, 4)
 	if header != "" {
@@ -123,9 +137,6 @@ func (m *Model) View() string {
 	if footer != "" {
 		sections = append(sections, footer)
 	}
-	for _, errBanner := range errBanners {
-		sections = append(sections, errBanner)
-	}
 	return lipgloss.JoinVertical(lipgloss.Left, sections...)
 }
 

pkg/tui/views/chat/chat.go

@@ -83,6 +83,7 @@ type Model struct {
 	stopSignal      chan struct{}
 	chatReplyChunks chan provider.Chunk
 	persistence     bool // whether we will save new messages in the conversation
+	promptCaching   bool // whether prompt caching is enabled
 
 	// UI state
 	focus          focusState

pkg/tui/views/chat/view.go

@@ -245,7 +245,7 @@ func (m *Model) conversationMessagesView() string {
 	return sb.String()
 }
 
-func (m *Model) Content(width, height int) string {
+func (m *Model) Content(width, height int, errors string) string {
 	// calculate clamped input height to accomodate input text
 	// minimum 4 lines, maximum half of content area
 	inputHeight := max(4, min(height/2, m.input.LineCount()))
@@ -255,7 +255,15 @@ func (m *Model) Content(width, height int) string {
 	// remaining height towards content
 	m.content.Width, m.content.Height = width, height-tuiutil.Height(input)
 	content := m.content.View()
-	return lipgloss.JoinVertical(lipgloss.Left, content, input)
+
+	var sections []string
+	if errors != "" {
+		sections = []string{content, errors, input}
+	} else {
+		sections = []string{content, input}
+	}
+
+	return lipgloss.JoinVertical(lipgloss.Left, sections...)
 }
 
 func (m *Model) Header(width int) string {

pkg/tui/views/conversations/conversations.go

@@ -218,9 +218,13 @@ func (m *Model) Header(width int) string {
 	return styles.Header.Width(width).Render(header)
 }
 
-func (m *Model) Content(width int, height int) string {
+func (m *Model) Content(width int, height int, errors string) string {
 	m.content.Width, m.content.Height = width, height
-	return m.content.View()
+	content := m.content.View()
+	if errors != "" {
+		content += errors
+	}
+	return content
 }
 
 func (m *Model) Footer(width int) string {

pkg/tui/views/settings/settings.go

@@ -121,11 +121,15 @@ func (m *Model) Header(width int) string {
 	return styles.Header.Width(width).Render(header)
 }
 
-func (m *Model) Content(width, height int) string {
+func (m *Model) Content(width, height int, errors string) string {
 	// TODO: see Header()
 	currentModel := " Active model: " + m.App.ActiveModel(lipgloss.NewStyle())
 	m.modelList.Width, m.modelList.Height = width, height - 2
-	return "\n" + currentModel + "\n" + m.modelList.View()
+	content := "\n" + currentModel + "\n" + m.modelList.View()
+	if errors != "" {
+		content += errors
+	}
+	return content
 }
 
 func (m *Model) Footer(width int) string {