calendar: model Our Lady's Saturday as a real occurrence outcome

On a free Saturday (nothing privileged already claims it, no active
octave), the day's own identity is now "Our Lady's Saturday" rather
than an anonymous ordinary-feria -- mirrors privileged-feria-minor
exactly, per direct instruction: Semiduplex-or-higher still wins
outright (Marian Saturday doesn't apply at all); below that (Simplex,
and Vigil, both under semiduplex on the FeastClass scale) loses and is
commemorated instead. Layered additively after decideOccurrence, same
shape as applyOctaves -- never touches decideOccurrence's own rules.

Needed a real winner identity (not just the plain temporal feria id)
so day-label/antiphon/collect sourcing can recognize it -- added a
temporal-feasts record purely for that, and taught getDayLabel to
check it for any named temporal winner (a small, free improvement for
Christmas/Pentecost's own labels too, previously unhandled).

hours: build the duplex-majus+ Lauds psalmody override (per-feast)

lauds-psalmody no longer unconditionally uses the plain weekday
default: a duplex-majus-or-higher sanctoral winner, or Our Lady's
Saturday (unconditional, no rank threshold -- it isn't competing with
the weekday default the way a saint is), now substitutes its own
proper psalm groups/antiphons/canticle. Per-feast, not per-Common, per
direct instruction, even though most duplex-majus+ saints across the
year don't have one authored yet and fall back to the plain weekday
default until they do.

Content for the worked example (St. Lawrence's own day) surfaced a
real bug while sourcing it: st-lawrence-antiphon.yml had been read
from the Roman/secular rite's own [Ant 1], not Monastic 1617's actual
Benedictus antiphon for that day -- corrected from a fresh live query.

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

src/data/calendar/temporal-feasts/marian-saturday.yml

@@ -0,0 +1,7 @@
+# Not a real calendar date the way Christmas/Pentecost are — this record
+# exists purely so getDayLabel (and getBenedictusAntiphon/getDayCollects,
+# via the same {kind:'temporal', id:'marian-saturday'} winner identity)
+# have a real name to show. See calendar/index.ts's applyMarianSaturday
+# for how a day actually becomes this.
+id: marian-saturday
+name: "Our Lady's Saturday"

src/data/hours/lauds-psalmody-overrides/marian-saturday.yml

@@ -0,0 +1,29 @@
+# Verified against Divinum Officium (Monastic Tridentinum 1617), Lauds
+# live query, Sanctæ Mariæ Sabbato (2026-09-05). Applies unconditionally
+# whenever Marian Saturday wins the day (see calendar/index.ts's
+# applyMarianSaturday) -- not gated by the duplex-majus+ rank threshold
+# the sanctoral overrides use, since Marian Saturday isn't itself ranked
+# in competition with the weekday default the way a saint is.
+id: marian-saturday
+groups:
+  - psalms: [92]
+    antiphon:
+      la: "Dum esset Rex * in accúbitu suo, nardus mea dedit odórem suavitátis."
+      en: "While the King was at his repose, * my spikenard sent forth the odour thereof."
+  - psalms: [99]
+    antiphon:
+      la: "Læva ejus * sub cápite meo, et déxtera illíus amplexábitur me."
+      en: "His left hand is under my head, * and his right hand shall embrace me."
+  - psalms: [62]
+    antiphon:
+      la: "Nigra sum, * sed formósa, fíliæ Jerúsalem; ídeo diléxit me Rex, et introdúxit me in cubículum suum."
+      en: "I am black, * but beautiful, O ye daughters of Jerusalem; therefore hath the King loved me, and brought me into his chamber."
+canticle:
+  id: canticum-trium-puerorum
+  antiphon:
+    la: "Jam hiems tránsiit, * imber ábiit et recéssit: surge, amíca mea, et veni."
+    en: "For winter is now past, * the rain is over and gone: arise, my love, and come."
+laudate:
+  antiphon:
+    la: "Speciósa * facta es et suávis in delíciis tuis, sancta Dei Génitrix."
+    en: "Beautiful and sweet * thou art become in thy delights, O holy Mother of God."

src/data/hours/lauds-psalmody-overrides/st-lawrence.yml

@@ -0,0 +1,31 @@
+# Verified against Divinum Officium (Monastic Tridentinum 1617), Lauds
+# live query, St. Lawrence's own day (2026-08-10, Duplex II. classis --
+# above the duplex-majus threshold this override mechanism is gated at).
+# Worked example proving the mechanism end to end; the psalm numbers
+# happen to be the same 92/99/62 + the Three Young Men that most Common-
+# of-Martyrs-shaped feasts reuse, but the antiphons are St. Lawrence's own
+# proper text, not the plain Commune's — that's the whole point of
+# authoring per-feast rather than per-Common (explicit choice).
+id: st-lawrence
+groups:
+  - psalms: [92]
+    antiphon:
+      la: "Lauréntius * ingréssus est Martyr, et conféssus est nomen Dómini Jesu Christi."
+      en: "Lawrence went in to be a martyr, * and acknowledged the name of our Lord Jesus Christ."
+  - psalms: [99]
+    antiphon:
+      la: "Lauréntius * bonum opus operátus est, qui per signum crucis cæcos illuminávit."
+      en: "Lawrence wrought a good work, * in that with the sign of the Cross he gave sight to the blind."
+  - psalms: [62]
+    antiphon:
+      la: "Adhǽsit * ánima mea post te, quia caro mea igne cremáta est pro te, Deus meus."
+      en: "O my God, my soul cleaveth * fast after thee, for my flesh hath been burnt with fire for thy sake."
+canticle:
+  id: canticum-trium-puerorum
+  antiphon:
+    la: "Misit Dóminus * Angelum suum, et liberávit me de médio ignis, et non sum æstuátus."
+    en: "The Lord hath sent His Angel, * and hath delivered me out of the midst of the fire, so that I am not scorched."
+laudate:
+  antiphon:
+    la: "Beátus Lauréntius * orábat, dicens: Grátias tibi ago, Dómine, quia jánuas tuas íngredi mérui."
+    en: "The blessed Lawrence prayed * and said: I give thee thanks, O Lord, that Thou hast made me worthy to enter within thy gates."

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

@@ -1,9 +1,14 @@
-# Verified against Divinum Officium (Latin/English Sancti/08-10.txt's own
-# [Ant 1] — the Lauds-hour antiphon, not Terce's.
+# Verified against Divinum Officium (Monastic Tridentinum 1617), Lauds
+# live query, St. Lawrence's own day (2026-08-10) -- the Benedictus
+# antiphon. Corrects an earlier version of this file, which had been
+# sourced from the Roman/secular rite's Sancti/08-10.txt's own [Ant 1]
+# instead: real, wrong text for this project's Monastic base (found while
+# building the duplex-majus+ Lauds psalmody override, which needed a real
+# worked example and so needed this checked directly rather than assumed).
 id: st-lawrence-antiphon
 text:
-  la: "Levíta Lauréntius * bonum opus operátus est, qui per signum crucis cæcos illuminávit, et thesáuros Ecclésiæ dedit paupéribus."
-  en: "Lawrence the Deacon * performed a pious act by giving sight to the blind through the Sign of the Cross, and by bestowing on the poor the riches of the Church."
+  la: "In cratícula * te Deum non negávi, et ad ignem applicátus te Christum conféssus sum: probásti cor meum, et visitásti nocte: igne me examinásti, et non est invénta in me iníquitas."
+  en: "Upon the bars I denied thee not, O God. * And when they put me to the fire, I acknowledged thee to be the Lord, O Christ. Thou hast proved mine heart, and visited it by night; Thou hast tried me with fire, and found no wickedness in me."
 status:
   la: verified
   en: verified

src/data/propers/temporal/marian-saturday-benedictus-antiphon.yml

@@ -0,0 +1,9 @@
+# Verified against Divinum Officium (Monastic Tridentinum 1617), Lauds
+# live query, Sanctæ Mariæ Sabbato (2026-09-05).
+id: marian-saturday-benedictus-antiphon
+text:
+  la: "Beáta Dei Génitrix * María, Virgo perpétua, templum Dómini, sacrárium Spíritus Sancti, sola sine exémplo placuísti Dómino nostro Jesu Christo: ora pro pópulo, intérveni pro clero, intercéde pro devóto femíneo sexu."
+  en: "Blessed Mother of God, * Mary, ever Virgin, temple of the Lord, shrine of the Holy Ghost, thou alone without example hast pleased our Lord Jesus Christ: pray for the people, plead for the clergy, make intercession for all women vowed to God."
+status:
+  la: verified
+  en: verified

src/data/propers/temporal/marian-saturday-collect.yml

@@ -0,0 +1,19 @@
+# Verified against Divinum Officium (Monastic Tridentinum 1617), Lauds
+# live query, Sanctæ Mariæ Sabbato (2026-09-05). Same collect text as the
+# Suffragium's own "De Beata Maria" (lauds-suffrage-bvm.yml) -- real
+# practice reuses it for both purposes.
+id: marian-saturday-collect
+text:
+  la: |
+    Orémus.
+    Concéde nos fámulos tuos, quǽsumus, Dómine Deus, perpétua mentis et córporis sanitáte gaudére: et, gloriósa beátæ Maríæ semper Vírginis intercessióne, a præsénti liberári tristítia, et ætérna pérfrui lætítia.
+    Per Dóminum nostrum Jesum Christum, Fílium tuum: qui tecum vivit et regnat in unitáte Spíritus Sancti, Deus, per ómnia sǽcula sæculórum.
+    R. Amen.
+  en: |
+    Let us pray.
+    Grant, we beseech thee, O Lord God, unto all thy servants, that they may remain continually in the enjoyment of soundness both of mind and body, and by the glorious intercession of the Blessed Mary, always a Virgin, may be delivered from present sadness, and enter into the joy of thine eternal gladness.
+    Through Jesus Christ, thy Son our Lord, Who liveth and reigneth with thee, in the unity of the Holy Ghost, God, world without end.
+    R. Amen.
+status:
+  la: verified
+  en: verified