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/09-21.yml

@@ -0,0 +1,36 @@
+# Verified against Divinum Officium (Latin Martyrologium, English translation).
+monthDay: "09-21"
+text:
+  la: |
+    In Æthiópia natális sancti Matthǽi, Apóstoli et Evangelístæ; qui, in ea regióne prǽdicans, martýrium passus est. Hujus Evangélium, Hebrǽo sermóne conscríptum, ipso Matthǽo revelánte, invéntum est, una cum córpore beáti Bárnabæ Apóstoli, témpore Zenónis Imperatóris.
+
+    In terra Saar sancti Jonæ Prophétæ, qui sepúltus est in Geth.
+
+    In Æthiópia sanctæ Iphigéniæ Vírginis, quæ, baptizáta a beáto Matthǽo Apóstolo et Deo dicáta, sancto fine quiévit.
+
+    Romæ sancti Pámphili Mártyris.
+
+    Eódem die, via Cláudia, vigésimo ab Urbe milliário, pássio sancti Alexándri Epíscopi, qui, sub Antoníno Imperatóre, pro Christi fide, víncula, fustes, equúleum, lámpades ardéntes, ungulárum laniatiónem, béstias ac fornácis superávit flammas, ac tandem, gládio cæsus, vitam adéptus est gloriósam. Ejus corpus póstea beátus Dámasus Papa in Urbem tránstulit sexto Kaléndas Decémbris.
+
+    In Cypro sancti Isácii, Epíscopi et Mártyris.
+
+    In Phœnícia sancti Eusébii Mártyris, qui, cum ultro Præféctum adísset et se Christiánum esse denuntiásset, ab eo, multis torméntis afflíctus, cápite cæsus est.
+
+    In Cypro sancti Melétii, Epíscopi et Confessóris.
+  en: |
+    The holy Apostle and Evangelist Matthew, who suffered in Ethiopia, where he had preached the Gospel. A copy of his Gospel written in the Hebrew language was, by a revelation from himself, found in the time of the Emperor Zeno, along with the body of the blessed Apostle Barnabas.
+
+    In the land of Shaar, the holy prophet Jonah, who is buried in Gath.
+
+    At Rome, the holy martyr Pamphilus.
+
+    Likewise at Rome, at the twentieth milestone from the city upon the Claudian Way, the holy Bishop and martyr Pope Alexander I. Under the Emperor Antonine, he, for Christ's faith's sake, overcame fettering, cudgelling, racking, burning with lamps, tearing with hooks, exposure to wild beasts, and the fire of a furnace, and being at last beheaded won the life of glory that fadeth not away. The blessed Pope Damasus afterwards brought his body into the city on the 26th day of November, upon the which day he commanded a feast to be kept in his honour.
+
+    In Phoenicia, the holy martyr Eusebius, who went openly to the Prefect and proclaimed himself a Christian, for the which cause he was put to many torments and then beheaded.
+
+    In Cyprus, the holy Bishop and martyr Isacius, and there also the holy Bishop and Confessor Meletius.
+
+    In Ethiopia, the holy Virgin Iphigenia, who was baptized and consecrated to God by the blessed Apostle Matthew, and fell asleep in a holy death.
+status:
+  la: verified
+  en: verified