Add edit mode toggle and entry activation

internal/tui/model.go

@@ -111,3 +111,8 @@ func (m Model) SelectedEntry() *core.HostEntry {
 	}
 	return m.hosts.Entries[idx]
 }
+
+// Mode returns the current operating mode of the TUI.
+func (m Model) Mode() Mode {
+	return m.mode
+}

internal/tui/update.go

@@ -18,6 +18,20 @@ func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 			} else {
 				m.focus = listPane
 			}
+		case "e":
+			if m.mode == ViewMode {
+				m.mode = EditMode
+			} else {
+				m.mode = ViewMode
+			}
+		case "a":
+			if m.mode == EditMode {
+				if entry := m.SelectedEntry(); entry != nil {
+					entry.Active = !entry.Active
+					m.list.SetItem(m.list.Index(), entryItem{entry})
+					m.refreshDetail()
+				}
+			}
 		case "up", "k":
 			if m.focus == detailPane {
 				m.detail.LineUp(1)

internal/tui/view.go

@@ -47,7 +47,11 @@ func (m Model) View() string {
 
 	// join panes and status bar
 	panes := lipgloss.JoinHorizontal(lipgloss.Top, left, right)
-	status := fmt.Sprintf("VIEW MODE • %d entries", len(m.hosts.Entries))
+	modeLabel := "VIEW"
+	if m.mode == EditMode {
+		modeLabel = "EDIT"
+	}
+	status := fmt.Sprintf("%s MODE • %d entries", modeLabel, len(m.hosts.Entries))
 	bar := statusStyle.Width(m.width).Render(status)
 	return lipgloss.JoinVertical(lipgloss.Left, panes, bar)
 }