Add St. Joseph's suffrage; fix Cross/BVM suffrage gating

Three things prompted by today's date resolving wrong:

1. St. Joseph's own Lauds suffrage was never modeled at all. Added
   lauds-suffrage-joseph.yml, sourced from Tridentine 1906/1910 (the
   reference engine's "Tridentine - 1906" version) per direct
   instruction -- Monastic 1617's own suffrage set has no Joseph
   suffrage at Lauds, so this one genuinely comes from a different track
   than the other four.

2. The Cross suffrage's actual gating rule, live-verified against a
   plain ferial win, a plain Sunday win, a low-rank saint's own win (even
   bare Simplex), and Marian Saturday: it shows only when the bare
   temporal feria itself is what's being prayed -- the opposite of
   "Sunday or a feast of the Lord." Expressed as `!isSundayOrFeast(day)`
   (the same ferial/festive split Prime's capitulum already uses) plus
   one more exclusion for a named temporal identity like Marian Saturday,
   which isn't Sunday or a sanctoral win either but still isn't a bare
   ferial office.

3. The BVM suffrage is correctly dropped on Marian Saturday (unchanged
   behavior, just now understood and commented correctly): it's specific
   to a day whose own office is already Marian, confirmed via the same
   live source, not a guess.

Also models St. Clare (Aug 12, Simplex under Monastic 1617) and surfaces
active octaves in getDayLabel, since today's date was resolving as a
plain ferial day instead of showing St. Lawrence's octave with St. Clare
commemorated.

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

TODO.md

@@ -272,8 +272,13 @@ real `draft` status went through it.
   complete "Let us pray ... Amen." block, not the more compressed real form
   (one "Let us pray," only the last collect's doxology).
 - Suffrage omission only checks `omitOnDouble` (+ Marian Saturday's own
-  Cross/BVM filter, + Christ the King's explicit id check). Real seasonal
-  suppression (e.g. during Advent/Lent) isn't modeled.
+  Cross/BVM filter, + Christ the King's explicit id check, + the Cross-only
+  ferial-office check added 2026-08). Real seasonal suppression is still
+  missing: per the Tridentine 1906/1910 source (`specials.pl`'s
+  `checksuffragium`), suffrages are omitted *entirely* during Advent,
+  Christmastide, and Passiontide, and whenever any octave is active — none
+  of that is modeled, so e.g. an Advent feria currently still shows all
+  five suffrages when the real office would have none.
 - `data/calendar/temporal-categories.yml`'s season→category reconstruction
   is from general knowledge of the pre-1955 tradition, not independently
   verified against a primary source for every entry (flagged inline where