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/04-27.yml

@@ -0,0 +1,42 @@
+# Verified against Divinum Officium (Latin Martyrologium, English translation).
+monthDay: "04-27"
+text:
+  la: |
+    Sancti Petri Canísii, Sacerdótis e Societáte Jesu et Confessóris atque Ecclésiæ Doctóris; qui duodécimo Kaléndas Januárii migrávit ad Dóminum.
+
+    Nicomedíæ natális sancti Anthimi, Epíscopi et Mártyris; qui in persecutióne Diocletiáni, ob confessiónem Christi, martýrii glóriam obtruncatióne cápitis accépit. Secúta est quoque illum univérsa ferme gregis sui multitúdo; quorum álios Judex gládio obtruncári, álios conflagrári ígnibus, álios, navículis impósitos, pélago immérgi fecit.
+
+    Tarsi, in Cilícia, sanctórum Castóris et Stéphani Mártyrum.
+
+    Bonóniæ sancti Tertulliáni, Epíscopi et Confessóris.
+
+    Bríxiæ sancti Theóphili Epíscopi.
+
+    In Ægýpto sancti Theodóri Abbátis, qui fuit discípulus sancti Pachómii.
+
+    Constantinópoli sancti Joánnis Abbátis, qui pro cultu sacrárum Imáginum, sub Leóne Isáurico, plúrimum decertávit.
+
+    Tarracóne, in Hispánia, beáti Petri Armengáudii, ex Ordine beátæ Maríæ de Mercéde redemptiónis captivórum; qui, multa pro fidélibus rediméndis in Africa passus, tandem, in convéntu sanctæ Maríæ Pratórum, beáto fine quiévit.
+
+    Lucæ, in Túscia, beátæ Zitæ Vírginis, virtútum et miraculórum fama conspícuæ.
+  en: |
+    We keep the feast of the holy Priest and monk Egbert, a man of marvellous lowliness and self-denial, of whom mention has been made upon the 24th day of this present month of April.
+
+    At Nicomedia, the holy martyr Anthimus, Bishop of that see, who was beheaded for confessing Christ, in the persecution under the Emperor Diocletian, and so gained the glory of martyrdom. He was followed by almost all his flock, whereof by command of the judge some were slain with the sword, some burnt in fire, and some embarked upon ships and drowned in the sea.
+
+    At Tarsus, in Cilicia, the holy martyrs Castor and Stephen. [St. Stephen was perhaps a Bishop.]
+
+    At Rome, blessed Pope Anastasius [I, in the year 401,] a man very rich in poverty and apostolic care, of whom St. Jerome writeth that Rome deserved not long to have him, lest the head of the world should be cut off under such a Bishop, since no long while after his death Rome was taken and sacked by the Goths.
+
+    At Bologna, [in the sixth century,] the holy Confessor Tertullian, Bishop of that see.
+
+    At Brescia, [in the fifth century,] holy Theophilus, Bishop of that see.
+
+    At Constantinople, the holy Abbot John, [of the monastery of Cathares Hegumenos,] who contended much for the honouring of holy images under the Emperor Leo the Isaurian, [in the year 813, under Leo the Armenian. Leo the Isaurian reigned from 717-741.]
+
+    At Taragona, the blessed Peter Armengal, of the Order of the Blessed Virgin Mary of Ransom for the Redemption of Captives. He suffered many things for the redemption of the faithful in Africa, and at length died a blessed death in the convent of St.-Mary-of-the-Meadows, [in the year 1304.]
+
+    At Lucca, in Italy, [in the year 1278,] the blessed Virgin Zita, very famous for her graces and miracles.
+status:
+  la: verified
+  en: verified