Add offline-first task-master TUI with tickets, board lists, and undo.

Charm-based CLI with JSON persistence, status/list filters, external editor editing, command-history undo/redo, and glamour markdown without AutoStyle OSC hangs.

Co-authored-by: Cursor <cursoragent@cursor.com>

internal/ui/helpbar.go

@@ -0,0 +1,115 @@
+package ui
+
+import (
+	"strings"
+
+	"github.com/charmbracelet/lipgloss"
+)
+
+type helpEntry struct {
+	key  string
+	desc string
+}
+
+func (m Model) helpEntries() []helpEntry {
+	switch m.mode {
+	case ModeCreate:
+		return []helpEntry{
+			{"enter", "save"},
+			{"esc", "cancel"},
+		}
+	case ModeSearch:
+		return []helpEntry{
+			{"enter", "apply"},
+			{"esc", "cancel"},
+		}
+	case ModeProjects:
+		return []helpEntry{
+			{"j/k", "navigate"},
+			{"enter", "select"},
+			{"n", "new project"},
+			{"esc", "cancel"},
+		}
+	case ModeStatus:
+		return []helpEntry{
+			{"j/k", "select"},
+			{"enter", "apply"},
+			{"esc", "cancel"},
+		}
+	case ModeBoard:
+		return []helpEntry{
+			{"j/k", "select"},
+			{"enter", "apply"},
+			{"esc", "cancel"},
+		}
+	default:
+		return []helpEntry{
+			{"j/k", "navigate"},
+			{"n", "new"},
+			{"e", "edit"},
+			{"u/U", "undo/redo"},
+			{"/", "search"},
+			{"p", "project"},
+			{"l", "list"},
+			{"s", "status"},
+			{"X", "delete"},
+			{"q", "quit"},
+		}
+	}
+}
+
+func (m Model) renderHelpbar() string {
+	var parts []string
+	for _, e := range m.helpEntries() {
+		parts = append(parts, m.styles.HelpKey.Render(e.key)+" "+m.styles.HelpDesc.Render(e.desc))
+	}
+	sep := m.styles.HelpSep.String()
+	if sep == "" {
+		sep = "  "
+	}
+	return strings.Join(parts, sep)
+}
+
+func (m Model) renderFooter() string {
+	help := m.renderHelpbar()
+	ver := m.styles.Version.Render(m.version)
+
+	width := m.width
+	if width <= 0 {
+		width = lipgloss.Width(help) + lipgloss.Width(ver) + 1
+	}
+
+	helpW := lipgloss.Width(help)
+	verW := lipgloss.Width(ver)
+	gap := width - helpW - verW
+	if gap < 1 {
+		maxHelp := width - verW - 1
+		if maxHelp < 0 {
+			maxHelp = 0
+		}
+		help = truncateWidth(help, maxHelp)
+		helpW = lipgloss.Width(help)
+		gap = width - helpW - verW
+		if gap < 1 {
+			gap = 1
+		}
+	}
+	return help + strings.Repeat(" ", gap) + ver
+}
+
+func truncateWidth(s string, max int) string {
+	if max <= 0 {
+		return ""
+	}
+	if lipgloss.Width(s) <= max {
+		return s
+	}
+	runes := []rune(s)
+	for len(runes) > 0 {
+		runes = runes[:len(runes)-1]
+		if lipgloss.Width(string(runes)) <= max-1 {
+			return string(runes) + "…"
+		}
+	}
+	return ""
+}