Add YouTrack pull/push sync with project settings and time tracking.

Wire manual Y menu and CLI sync for issues and work items, persist
per-project credentials, and keep local edits until an explicit push.

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

internal/ui/layout.go

@@ -80,10 +80,17 @@ func (m Model) renderBody(height int) string {
 		m.projectList.SetSize(m.width, height)
 		return m.projectList.View()
 
+	case ModeEditProject:
+		return lipgloss.NewStyle().Height(height).Width(m.width).Render(m.projectEdit.View())
+
 	case ModeStatus:
 		menu := m.statusMenu.View()
 		return lipgloss.NewStyle().Height(height).Width(m.width).Render(menu)
 
+	case ModeSync:
+		menu := m.syncMenu.View()
+		return lipgloss.NewStyle().Height(height).Width(m.width).Render(menu)
+
 	case ModeBoard:
 		menu := m.boardMenu.View()
 		return lipgloss.NewStyle().Height(height).Width(m.width).Render(menu)