Prime: real content (psalms, Martyrology, Regula) and ordo corrections

Pulls in verified content from Divinum Officium rather than placeholders:
17 psalms (2, 6, 7-19, 118, 129), 365 days of the Martyrology, and the full
121-reading Regula cycle, plus the Athanasian Creed.

Ordo corrections driven by review against the real engine output:
- Capitulum and Preces now pick a Sunday/feast vs. ferial form
  (calendar/isSundayOrFeast); ferial Preces said every ferial day by choice.
- Chapter responsory, hymn doxology, and the opening versicle's
  Alleluia/Laus tibi all vary by season via a shared resolver
  (hours/seasonal-propers.ts).
- Real Roman Kalends/Nones/Ides Latin dating (calendar/roman-date.ts,
  verified against 363/365 real Martyrology headings) plus the historical
  "bis sextus" Feb 29 handling, and the Martyrology's Luna (moon-day)
  heading (a ported Golden-Number calculation).
- Fixed responsory structure (was missing its initial full repeat),
  weekday psalm antiphons (opening as incipit-or-full by rank, full
  repeat after the psalms/Creed as its own part, "*" chant mark kept),
  scripture citations on the capitulum/lectio brevis, and V./R. markers
  switched from Unicode symbols to plain text for reliable font rendering.
- Dropped Pretiosa and the dead-commemoration psalm (129) for time;
  trimmed section headings down to the ones that are actually named
  things (Preces, Chapter Office, etc. no longer relabel connective text).

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

src/data/martyrology/04-18.yml

@@ -0,0 +1,34 @@
+# Verified against Divinum Officium (Latin Martyrologium, English translation).
+monthDay: "04-18"
+text:
+  la: |
+    Apud montem Senárium, in Etrúria, natális sancti Amidǽi Confessóris, e septem Fundatóribus Ordinis Servórum beátæ Maríæ Vírginis, flagrantíssima in Deum caritáte præclári. Ipsíus tamen ac Sociórum festum prídie Idus Februárii celebrátur.
+
+    Romæ beáti Apollónii Senatóris, qui, sub Cómmodo Príncipe et Perénnio Præfécto, a servo próditus quod Christiánus esset, jussúsque ut ratiónem fídei suæ rédderet, insígne volúmen compósuit, quod in Senátu legit; et nihilóminus pro Christo, senténtia Senátus, cápite truncátus est.
+
+    Messánæ, in Sicília, natális sanctórum Mártyrum Eleuthérii, Epíscopi Illýrici, et Anthíæ matris. Ipse, cum esset vitæ sanctimónia et miraculórum virtúte illústris, sub Hadriáno Príncipe, lectum férreum ignítum, cratículam et sartáginem, óleo et pice ac resína fervéntem, súperans, projéctus quoque leónibus sed ab illis nil læsus, novíssime simul cum matre jugulátur.
+
+    Córdubæ, in Hispánia, sancti Perfécti, Presbýteri et Mártyris, qui a Mauris, eo quod inveherétur in Mahumétis sectam et fírmiter Christi fidem profiterétur, gládio trucidátus est.
+
+    Messánæ, in Sicília, sancti Corébi Præfécti, qui, per sanctum Eleuthérium convérsus ad fidem, gládio percússus est.
+
+    Bríxiæ sancti Calóceri Mártyris, qui, a sanctis Faustíno et Jovíta convérsus ad Christum, sub Hadriáno Príncipe gloriósum confessiónis certámen complévit.
+
+    Medioláni sancti Galdíni, Cardinális et ejúsdem civitátis Epíscopi, qui, concióne advérsus hæréticos expléta, spíritum Deo réddidit.
+  en: |
+    At Rome, under the Emperor Cornmodus and the Prefect Perennius, the blessed Senator Apollonius. A slave informed upon him as being a Christian, and he was commanded to give an account of his faith. In order to do this he wrote an admirable treatise, which he read in the Senate but the Senate, nevertheless, ordered him to be beheaded for Christ's sake.
+
+    At Messina, the holy martyrs Eleutherius, Bishop of Illyrium, and Anthia his mother. He was famous for the holiness of his life, and for his power of working miracles. Under the Emperor Hadrian he was tortured upon a heated iron-bed, a grating, and a vessel filled with boiling oil, pitch, and rosin. These he overcame, and was thrown to the lions but by them he was left unhurt, and in the end his throat was cut along with that of his mother.
+
+    Likewise at Messina, the holy Prefect Corebus, who was converted to the faith by holy Eleutherius, and was slain with the sword.
+
+    At Brescia, the holy martyr Calocerus, who was converted to Christ by holy Faustinus and Jovita, and under the aforesaid Emperor Hadrian by his testimony finished a glorious contention.
+
+    At Cordova, the holy martyr Perfectus the Priest, who was killed by the Moors for holding forth against the Mahomedan religion. [The place of his death, which was in the year 850, is still called the Field of Truth.]
+
+    At Milan, holy Cardinal Galdin, Bishop of that see, who gave up his soul to God on finishing a discourse against heretics, [in the year 1176. He was a Cardinal Archbishop and a Legate of the Holy See.]
+
+    At Monte Senario, in Tuscany, [in the thirteenth century,] the blessed Confessor Amadeo, one of the seven founders of the Order of Servants of the Blessed Virgin Mary, whose feast we keep upon the 13th day of February. He was eminent for his burning love toward God.
+status:
+  la: verified
+  en: verified