Transcribe the calendar blueprint from blueprint-ontology (README +
calendar.als): Navigate, Render, Load, Scope functions, its own
Idle/Loading/Refreshing/Error lifecycle, and a bespoke month/week
specimen. Composition follows the formal model (Async + Pullable).
Add navigate/changeScope transition kinds and build the legend from the
transitions a machine actually has, so each blueprint shows only its own
kinds — needed for Calendar, whose lifecycle has no loadMore().
Height was derived from the capabilities column only; the functions column
(52px step) is taller and its last box + column labels fell outside the
viewBox. Size to the taller column plus label room.
