Add ticket time tracking with reports and entry management.

Support start/stop timer, manual durations, grouped reports, and per-ticket edit/delete of time entries with undo.

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

internal/ui/helpbar.go

@@ -55,11 +55,45 @@ func (m Model) helpEntries() []helpEntry {
 			{"y/enter", "confirm"},
 			{"esc", "cancel"},
 		}
+	case ModeTimeManual:
+		return []helpEntry{
+			{"enter", "save"},
+			{"esc", "cancel"},
+		}
+	case ModeTimeEntries:
+		return []helpEntry{
+			{"j/k", "navigate"},
+			{"e", "edit"},
+			{"x", "delete"},
+			{"u/U", "undo/redo"},
+			{"esc", "back"},
+		}
+	case ModeTimeEdit:
+		return []helpEntry{
+			{"enter", "save"},
+			{"esc", "cancel"},
+		}
+	case ModeReport:
+		return []helpEntry{
+			{"g", "group"},
+			{"j/k", "scroll"},
+			{"esc", "back"},
+		}
+	case ModeReportGroup:
+		return []helpEntry{
+			{"j/k", "select"},
+			{"p/s/t/d", "jump"},
+			{"enter", "apply"},
+			{"esc", "cancel"},
+		}
 	default:
 		return []helpEntry{
 			{"j/k", "navigate"},
 			{"n", "new"},
 			{"e", "edit"},
+			{"t/T", "timer/log"},
+			{"m", "entries"},
+			{"r", "report"},
 			{"u/U", "undo/redo"},
 			{"/", "search"},
 			{"p", "project"},