calendar: pull November's sanctoral calendar (pre-1955 pull, 11/12)

19 saints (14 real winners + 5 stubs), plus a propers-slug update for the
pre-existing All Saints entry. Three monastic-calendar-specific
reassignments this month, the most of any month so far (St. Emilian
displacing St. Martin I Pope, who moves to a different date; St. Odo
demoting St. Pontian; St. Silvester Abbot displacing St. Peter of
Alexandria), plus All Saints of the Benedictine Order, a monastic-only
addition at Duplex II. classis. New exclusion category: All Souls' Day
(Nov 2) is a fundamentally different liturgical genre -- the Office of
the Dead -- out of scope the same way the Requiem rite isn't modeled
anywhere else in this app.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/data/calendar/saints/st-pontian.yml

@@ -0,0 +1,10 @@
+# Genuinely unwinnable stub (verified 2025-11-19) -- always commemorated
+# under St. Odo in the monastic calendar (see st-odo.yml), even though
+# the base Tridentine table has him as the sole entry here; both are
+# fixed, non-movable dates, so this isn't an artifact of the tested year.
+# rank/propers unverified placeholders.
+id: st-pontian
+name: "St. Pontian, Pope and Martyr"
+rank: simplex
+common: common-of-a-martyr-bishop
+propers: null