calendar: pull January's sanctoral calendar (pre-1955 pull, 1/12)

20 saints for January, verified per-day against Divinum Officium (Monastic
Tridentinum 1617): 13 that actually win their day outright (rank pulled
from a live per-date query, since the static 1570/M1617 calendar text
files turned out unreliable once monastic-specific overrides apply) and
7 stubs for saints that only ever get commemorated, with an explicitly
flagged, unverified simplex rank guess pending correction.

Deliberately out of scope: pure octave-continuation days (In Octava S.
Stephani, the Epiphany-octave ferias) and fixed-date feasts of the
Lord/BMV (Circumcision, Epiphany) — sanctoral only, not temporal.

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

src/data/calendar/saints/ss-marius-martha-audifax-and-abachum.yml

@@ -0,0 +1,12 @@
+# Secondary commemoration on 01-19 (loses the day to St. Paul the First Hermit), pulled from
+# Divinum Officium's kalendar headline (Monastic Tridentinum 1617, 2029-01-19).
+# That query doesn't expose a secondary entry's rank, only its name -- simplex
+# here is an unverified placeholder (the safest default, not a real reading),
+# expected to need hand correction like the rest of this first-pass pull. No
+# text pulled at all yet, matching the "first pass, detect but don't fully
+# author" scope for merely-commemorated saints.
+id: ss-marius-martha-audifax-and-abachum
+name: "Ss. Marius, Martha, Audifax, and Abachum, Martyrs"
+rank: simplex
+common: common-of-several-martyrs
+propers: null