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/03-31.yml

@@ -0,0 +1,22 @@
+# Verified against Divinum Officium (Latin Martyrologium, English translation).
+monthDay: "03-31"
+text:
+  la: |
+    Thécuæ, in Palæstína, sancti Amos Prophétæ, qui ab Amasía Sacerdóte frequénter plagis afflíctus est, atque ab hujus fílio Ozía vecte per témpora transfíxus; et póstea, semivívus in pátriam devéctus, ibídem exspirávit, sepultúsque est cum pátribus suis.
+
+    In Pérside sancti Bénjamin Diáconi, qui, cum Dei verbum non desísteret prædicáre, ídeo, sub Isdegérde Rege, arundínibus acútis confíxus únguibus, et spinósa sude per alvum transmíssa, martýrium consummávit.
+
+    In Africa sanctórum Mártyrum Theodúli, Anésii, Felícis, Cornéliæ et Sociórum.
+
+    Romæ sanctæ Balbínæ Vírginis, fíliæ beáti Quiríni Mártyris, quæ, a sancto Alexándro Papa baptizáta, in sancta virginitáte Christum sibi sponsum elégit; et, post devíctum hujus sǽculi cursum, sepúlta est via Appia, juxta patrem suum.
+  en: |
+    At Tekoa, in Palestine, the holy Prophet Amos, who was often-times scourged by the priest Amaziah, and pierced in the temples with a bar by his son Oziah. He was afterward borne back half dead into his own country, and there gave up the ghost, and is buried with his fathers, [785 B.C.]
+
+    In Africa, the holy martyrs Theodulus, Anesius, Felix, Cornelia, and their Companions.
+
+    In Persia, under King Isdegerd, the holy martyr Benjamin the Deacon. Because he would not cease from preaching the word of God, sharp reeds were forced under his nails, and a thorny stake thrust into his bowels, and so he finished his testimony, [in the year 401.]
+
+    At Rome, the holy virgin Balbina, the daughter of the blessed martyr Quirinus. She was baptized by holy Pope Alexander, and after she had overcome the world, [in the year 169,] she was buried on the Appian Way, by her father's side.
+status:
+  la: verified
+  en: verified