Build project timelines, milestone trackers, and Gantt-style dependency maps for carbon credit projects, covering the validation, monitoring, verification, and issuance cycle. Use whenever the user wants a carbon project timeline, milestone tracker, registry submission schedule, crediting period roadmap, or wants to map dependencies between PDD completion, validation, first monitoring period, and credit issuance. Trigger on "project timeline," "milestone tracker," "when do we submit," "validation timeline," or "crediting period schedule."