gantt title Website migration dateFormat YYYY-MM-DD section Preparation Content inventory :a, 2026-11-02, 3d Redirect mapping :b, 2026-11-02, 4d Staging checks :c, 2026-11-06, 3d section Release Cutover :milestone, 2026-11-09, 0d Monitor and resolve :d, 2026-11-09, 5d