feat: mouse wheel scrolling in errors tab

internal/tui/app.go

@@ -132,6 +132,8 @@ type model struct {
 	width  int
 	height int
 	err    error
+
+	errorsScrollOffset int
 }
 
 func initialModel(client *sshclient.Client, logPath string) model {
@@ -233,6 +235,18 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		m.width = msg.Width
 		m.height = msg.Height
 
+	case tea.MouseMsg:
+		if m.activeTab == tabErrors {
+			switch msg.Button {
+			case tea.MouseButtonWheelUp:
+				if m.errorsScrollOffset > 0 {
+					m.errorsScrollOffset--
+				}
+			case tea.MouseButtonWheelDown:
+				m.errorsScrollOffset++
+			}
+		}
+
 	case tea.KeyMsg:
 		switch msg.String() {
 		case "q", "ctrl+c":
@@ -240,14 +254,18 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 			return m, tea.Quit
 		case "1":
 			m.activeTab = tabLive
+			m.errorsScrollOffset = 0
 		case "2":
 			m.activeTab = tabDay
+			m.errorsScrollOffset = 0
 			return m, m.ensureHistory(tabDay)
 		case "3":
 			m.activeTab = tabWeek
+			m.errorsScrollOffset = 0
 			return m, m.ensureHistory(tabWeek)
 		case "4":
 			m.activeTab = tabErrors
+			m.errorsScrollOffset = 0
 			return m, m.ensureHistory(tabDay)
 		}
 
@@ -290,6 +308,7 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 			h.stats = msg.agg.ToStats()
 			h.buckets = msg.agg.ToBuckets(tabBucketSize(msg.tab))
 			h.errors = msg.agg.RecentErrors(100)
+			m.errorsScrollOffset = 0
 		}
 
 	case errMsg:
@@ -506,8 +525,34 @@ func (m model) renderErrors() string {
 		ipW, "REMOTE IP",
 		"URI",
 	)
+
+	// Fixed-height overhead: header + tab bar + title/header rows + footer/borders.
+	const overhead = 10
+	maxRows := m.height - overhead
+	if maxRows < 3 {
+		maxRows = 3
+	}
+
+	// Clamp scroll offset.
+	if m.errorsScrollOffset > len(errs)-maxRows {
+		if len(errs) > maxRows {
+			m.errorsScrollOffset = len(errs) - maxRows
+		} else {
+			m.errorsScrollOffset = 0
+		}
+	}
+	if m.errorsScrollOffset < 0 {
+		m.errorsScrollOffset = 0
+	}
+
+	end := m.errorsScrollOffset + maxRows
+	if end > len(errs) {
+		end = len(errs)
+	}
+	visible := errs[m.errorsScrollOffset:end]
+
 	rows := []string{styleHeader.Render(title), "", styleHeader.Render(header)}
-	for _, e := range errs {
+	for _, e := range visible {
 		statusStr := fmt.Sprintf("%d", e.Status)
 		var statusStyled string
 		if e.Status >= 500 {
@@ -732,7 +777,7 @@ func bucketSizeLabel(d time.Duration) string {
 // -- entry point --------------------------------------------------------------
 
 func Run(client *sshclient.Client, logPath string) error {
-	p := tea.NewProgram(initialModel(client, logPath), tea.WithAltScreen())
+	p := tea.NewProgram(initialModel(client, logPath), tea.WithAltScreen(), tea.WithMouseCellMotion())
 	_, err := p.Run()
 	return err
 }