New data/propers/temporal/*.yml and propers/index.ts's getTemporalProper,
mirroring the existing common-propers store. Populated with all 52
distinct Sunday collects for the full liturgical year (Advent 1-4, the
Christmas-octave Sunday, Epiphany 1-6, Septuagesima-tide, Lent 1-4 +
Passion + Palm Sunday, the 8 Paschal-time Sundays through Pentecost, and
post-Pentecost 1-24), each verified against the real Monastic Tridentinum
1617 engine.
Keyed Pentecost/offset-based ("post-pentecost-N-collect"), not
Trinity-counted — that's a display choice for calendar/day-label.ts, kept
independent of this content's storage identity. 8 of the 52 needed to be
read directly from the reference engine's source files plus its standard
closing-formula macros, since a real saint outranks those particular
Sundays on every candidate year checked and a live date query would only
ever return the saint's own collect.
