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/regula/04-02.yml

@@ -0,0 +1,13 @@
+# Verified against Divinum Officium (Latin Regula, English translation).
+canonicalDate: "04-02"
+label:
+  la: "Régula Sancti Patri Nostri Benedícti. Caput 51: De frátribus qui non longe satis proficiscúntur"
+  en: "The Rule of our Holy Father Benedict. Chapter 51: Concerning Brethren Who Do Not Go Far Away"
+text:
+  la: |
+    Frater qui pro quovis respónso dirígitur et ea die sperátur revérti ad monastérium, non præsúmat foris manducáre, étiam si omníno rogétur a quovis, nisi forte ei ab abbáte suo præcipiátur. Quod si áliter fécerit, excommunicétur.
+  en: |
+    Let not a brother who is sent out on any business but hopes to return to the monastery the same day presume to take food while out, even though he be frankly invited to do so by anyone, unless by chance it has been so ordered him by his abbot. And if he shall have done otherwise, let him be excommunicated.
+status:
+  la: verified
+  en: verified