Upload a validated SkyDemon PLOG PDF. Every upload joins the centralised corpus — the router's primary source of truth. When planning a new flight, the router first looks for an exact dep→dest match in the corpus and returns the pilot's waypoint sequence and altitudes. When there is no exact match, the AI assist mines the corpus for transferable patterns (VFR sectors, corridor usage, altitudes) from nearby flights to inform A* + AIP/airspace data. Ownership is recorded but visibility is global — every pilot benefits from every upload.