Author Prime/Terce/Sext/None antiphons+chapters for all 29 duplex-majus+ saints

Completes the P/T/S/N minor-hour override backlog started with St. Lawrence:
every duplex-majus+ saint not blocked by a missing collect (propers: null)
now has its own antiphon (all four hours) and chapter (Terce/Sext/None) text,
live-verified against Divinum Officium (Monastic Tridentinum 1617).

Two saints needed corrections to the reference engine's own data rather than
straight extraction: St. Scholastica's minor hours have no English rendering
in the source at all (English/SanctiM only covers Matins for her), so the
English is translated here directly and marked draft; the Immaculate
Conception's antiphons render with diacritics stripped relative to the
word-for-word-parallel Nativity BVM antiphon, so accentuation is restored
to match and marked draft. Several saints share identical Common of Apostles
or Common of the BVM content, confirmed via diff before reuse.

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

src/data/propers/common/sext-capitulum-assumption.yml

@@ -0,0 +1,12 @@
+# Verified against Divinum Officium (Monastic Tridentinum 1617), Sext
+# live query, the Assumption's own day (2026-08-15, clean year).
+id: sext-capitulum-assumption
+text:
+  la: "Et sic in Sion firmáta sum, et in civitáte sanctificáta simíliter requiévi, et in Jerúsalem potéstas mea. Et radicávi in pópulo honorificáto, et in parte Dei mei heréditas illíus, et in plenitúdine sanctórum deténtio mea. R. Deo grátias. V. Assúmpta est María in cælum: gaudent Angeli. R. Laudántes benedícunt Dóminum."
+  en: "And so was I established in Sion, and in the holy city likewise I rested, and my power was in Jerusalem. And I took root in an honourable people, and in the portion of my God his inheritance, and my abode is in the full assembly of saints. R. Thanks be to God. V. Mary hath been taken to heaven, the Angels rejoice. R. They praise and bless the Lord."
+citation:
+  la: "Sir 24:15-16"
+  en: "Sir 24:15-16"
+status:
+  la: verified
+  en: verified