Add November sanctoral content (5 saints/feasts)

St. Charles Borromeo (11-04), the Octave Day of All Saints (11-08,
own real Cyprian/Augustine Nocturn 2-3 content, collect reused from
All Saints via cross-id propers), St. Albert the Great (11-15),
St. Gertrude (11-16), St. Felix of Valois (11-20). All Souls' Day
(11-02) deliberately skipped -- a Requiem office, not a normal
saint's office, a genuine mechanism gap.

Several new fixed-date Duplex+ saints displaced existing test
fixtures that had assumed particular dates were clean/ferial/
plain-Sunday: prime.test.ts's MONDAY constant, weekday.test.ts's
clean-Sunday case, and day-label.test.ts's post-Epiphany-overflow
and open-octave-day cases. Fixed by finding genuinely clean
alternate dates/years, never by weakening assertions.

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

src/data/propers/common/st-gertrude-collect.yml

@@ -0,0 +1,26 @@
+# Read directly from web/www/horas/Latin/Sancti/11-16.txt's own
+# [Oratio] and its English counterpart. Doxology "$Per Dominum"
+# spelled out per the convention in st-bibiana-collect.yml.
+id: st-gertrude-collect
+text:
+  la: |
+    Orémus.
+    Deus, qui in corde beátæ Gertrúdis Vírginis jucúndam tibi mansiónem
+    præparásti: ipsíus méritis et intercessióne; cordis nostri máculas
+    cleménter abstérge, et ejúsdem tríbue gaudére consórtio.
+    Per Dóminum nostrum Jesum Christum, Fílium tuum: qui tecum vivit et
+    regnat in unitáte Spíritus Sancti, Deus, per ómnia sǽcula sæculórum.
+    ℟. Amen.
+  en: |
+    Let us pray.
+    O God, Who didst make unto thyself a pleasant dwelling-place in the
+    heart of thy blessed hand-maiden Gertrude, be Thou entreated for the
+    same thy servant's sake, and by her prayers, to purge away in thy
+    mercy all defilement from our hearts, and to grant us one day to
+    rejoice with her in thy presence.
+    Through Jesus Christ, thy Son our Lord, Who liveth and reigneth with
+    thee, in the unity of the Holy Ghost, God, world without end.
+    ℟. Amen.
+status:
+  la: verified
+  en: verified