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/04-06.yml

@@ -0,0 +1,36 @@
+# Verified against Divinum Officium (Latin Martyrologium, English translation).
+monthDay: "04-06"
+text:
+  la: |
+    Medioláni pássio sancti Petri, ex Ordine Prædicatórum, Mártyris, qui ab hæréticis, ob fidem cathólicam, interémptus est. Ipsíus tamen festívitas recólitur tértio Kaléndas Maji.
+
+    Velehrádii, in Morávia, natális sancti Methódii, Epíscopi et Confessóris, qui, una cum sancto Cyríllo, item Epíscopo et fratre suo, cujus natális sextodécimo Kaléndas Mártii recensétur, multas Slávicas gentes earúmque Reges ad fidem Christi perdúxit. Horum autem Sanctórum festum Nonis Júlii celebrátur.
+
+    In Macedónia sanctórum Mártyrum Timóthei et Diógenis.
+
+    In Pérside sanctórum centum vigínti Mártyrum.
+
+    Ascalóne, in Palæstína, pássio sanctórum Platónidis et aliórum duórum Mártyrum.
+
+    Carthágine sancti Marcellíni Mártyris, qui, ob cathólicæ fídei defensiónem, ab hæréticis occísus est.
+
+    In Dánia sancti Guliélmi Abbátis, vita et miráculis clari.
+  en: |
+    At Rome, the blessed martyr, Pope Sixtus I, who ruled the Church, [in the years 117-127,] in the time of the Emperor Hadrian, and, under the Emperor Antoninus Pius, cheerfully welcomed the death of the body that so he might gain Christ.
+
+    In Macedonia, the holy martyrs Timothy and Diogenes, [in the year 345.]
+
+    In Persia, [at Adiabene,] an hundred and twenty holy martyrs, [about the year 344.]
+
+    At Ascalon, the holy martyrs Platonides and two others.
+
+    At Carthage, the holy martyr Marcellinus, who was slain by heretics, [in the year 413,] because he defended the Catholic faith.
+
+    At Rome, the holy Confessor, Pope Celestine [I, in the years 422-432,] who condemned Nestorius, Archbishop of Constantinople, and drave out Pelagius. It was by his authority that the holy General Council of Ephesus was held against the said Nestorius.
+
+    In Ireland, the holy Confessor Kelly, Archbishop of Armagh, [in the year 1128,] in the which see he came immediately before blessed Maleachlan.
+
+    In Denmark, holy William, Abbot [of Eskill,] famous for his life and miracles, [born 1105, died 1202.] [Of the order of Canons Regular of St Victor, Nephew of Hew, 42nd Abbot of St. Germain des Pres.]
+status:
+  la: verified
+  en: verified