propers: Benedictus antiphons for December's sanctoral entries (9/10)

4 authored fresh (Nicholas, the Immaculate Conception, Damasus, Thomas
of Canterbury), 1 corrected (Lucy -- confirmed sourced from the Roman
rite's raw [Ant 1] rather than a real Monastic 1617 rendering, same
pattern as every month so far). Thomas Apostle, Stephen Protomartyr,
John Apostle, and Holy Innocents already matched the live query as
found -- December's own late feasts (the Christmas Octave content)
turned out much less prone to the Roman/Monastic divergence than
earlier months, presumably because they're old and universal enough
that the two rites never actually diverged on them.

St. Bibiana left honestly missing: Simplex rank, Dec 2 falls within
Advent every tested year 2026-2029, same structural block as St.
Frances of Rome in March -- she can never win her own day outright
under this app's own calendar rules.

This closes out the full sweep: all 109 sanctoral entries with a
propers id have now been checked against a live Monastic query, twelve
months, one at a time. TODO.md has the final tally.

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

src/data/propers/common/immaculate-conception-antiphon.yml

@@ -0,0 +1,14 @@
+# Verified against Divinum Officium (Monastic Tridentinum 1617), Lauds
+# live query, the Immaculate Conception's own day (2026-12-08) -- the
+# Benedictus antiphon. Same formula as the Nativity of the BVM's own
+# (Sept 8), adapted for the Conception instead of the Birth, confirmed
+# independently rather than assumed. Her Lauds psalmody override (see
+# hours/lauds-psalmody-overrides.ts, TODO.md) is still unauthored --
+# this is only the Benedictus antiphon, a separate lookup.
+id: immaculate-conception-antiphon
+text:
+  la: "Conceptiónem hodiérnam perpétuæ Vírginis Genitrícis Dei Maríæ solémniter celebrémus, qua celsitúdo throni procéssit, allelúja."
+  en: "Let us this day keep solemnly the Conception of Mary, Mother but still Maiden, a step toward the loftiness of her throne. Alleluia."
+status:
+  la: verified
+  en: draft

src/data/propers/common/st-damasus-antiphon.yml

@@ -0,0 +1,10 @@
+# Verified against Divinum Officium (Monastic Tridentinum 1617), Lauds
+# live query, St. Damasus I's own day (2026-12-11). The Benedictus
+# antiphon.
+id: st-damasus-antiphon
+text:
+  la: "Euge, serve bone * et fidélis, quia in pauca fuísti fidélis, supra multa te constítuam, dicit Dóminus."
+  en: "Well done, thou good and faithful servant * thou hast been faithful over a few things, I will make thee ruler over many things, saith the Lord."
+status:
+  la: verified
+  en: verified

src/data/propers/common/st-lucy-antiphon.yml

@@ -1,9 +1,14 @@
-# Verified against Divinum Officium (Latin/English Sancti/12-13.txt's own
-# [Ant 1] — the Lauds-hour antiphon, not Terce's.
+# Verified against Divinum Officium (Monastic Tridentinum 1617), Lauds
+# live query, St. Lucy's own day (2027-12-13 -- 2026's own Dec 13 is
+# Advent III Sunday). The Benedictus antiphon. Corrects the previous
+# version of this file, which had been sourced from the Roman/secular
+# rite's Sancti/12-13.txt's own [Ant 1] instead: real but different text
+# from what Monastic 1617 actually renders at Lauds, same mistake as
+# St. Lawrence's earlier fix.
 id: st-lucy-antiphon
 text:
-  la: "In tua patiéntia * possedísti ánimam tuam, Lúcia, sponsa Christi: odísti quæ in mundo sunt, et coruscas cum Angelis: sánguine proprio inimícum vicisti."
-  en: "In patience * hast thou possessed thy soul, Lucy, Bride of Christ thou hast hated the things that are in the world, and art glorified among the Angels; thou hast shed thine own blood, and conquered the Adversary."
+  la: "Colúmna es immóbilis, Lúcia, sponsa Christi: quia omnis plebs te exspéctat, ut accípias corónam vitæ, allelúja."
+  en: "Thou art become as a pillar that cannot be shaken, Lucy, O Bride of Christ: all the people wait for thee, until thou receive the crown of life, alleluia."
 status:
   la: verified
   en: verified

src/data/propers/common/st-nicholas-antiphon.yml

@@ -0,0 +1,10 @@
+# Verified against Divinum Officium (Monastic Tridentinum 1617), Lauds
+# live query, St. Nicholas's own day (2027-12-06 -- 2026's own Dec 6 is
+# Advent II Sunday). The Benedictus antiphon.
+id: st-nicholas-antiphon
+text:
+  la: "Euge, serve bone * et fidélis, quia in pauca fuísti fidélis, supra multa te constítuam, dicit Dóminus."
+  en: "Well done, thou good and faithful servant * thou hast been faithful over a few things, I will make thee ruler over many things, saith the Lord."
+status:
+  la: verified
+  en: verified

src/data/propers/common/st-thomas-becket-antiphon.yml

@@ -0,0 +1,11 @@
+# Verified against Divinum Officium (Monastic Tridentinum 1617), Lauds
+# live query, St. Thomas of Canterbury's own day (2026-12-29). The
+# Benedictus antiphon. (He deliberately doesn't get an octave -- see
+# st-thomas-becket.yml -- but does still win his own day outright here.)
+id: st-thomas-becket-antiphon
+text:
+  la: "Qui odit * ánimam suam in hoc mundo, in vitam ætérnam custódit eam."
+  en: "He that hateth his life * in this world, shall keep it unto life eternal."
+status:
+  la: verified
+  en: verified