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/02-23.yml

@@ -0,0 +1,13 @@
+# Verified against Divinum Officium (Latin Regula, English translation).
+canonicalDate: "02-23"
+label:
+  la: "Cápite 18 Régulæ Sancti Patri Nostri Benedícti: Quo órdine ipsi psalmi dicéndi sunt"
+  en: "The Rule of our Holy Father Benedict. Chapter 18: In What Order the Psalms Themselves Are to Be Said. Continued."
+text:
+  la: |
+    Véspera autem cotídie quáttuor psalmórum modulatióne canátur. Qui psalmi incipiántur a centésimo nono usque centésimo quadragésimo séptimo, excéptis his qui in divérsis Horis ex eis sequestrántur, id est a centésimo séptimo décimo usque centésimo vicésimo séptimo et centésimo tricésimo tértio et centésimo quadragésimo secúndo; réliqui omnes in Véspera dicéndi sunt. Et quia minus véniunt tres psalmi, ídeo dividéndi sunt qui ex número suprascrípto fortióres inveniúntur, id est centésimum tricésimum octávum et centésimum quadragésimum tértium et centésimum quadragésimum quartum; centésimus vero sextus décimus, quia parvus est, cum centésimo quinto décimo conjungátur. Digésto ergo órdine psalmórum vespertinórum, réliqua, id est lectiónem, respónsum, hymnum, versum vel cánticum, sicut supra taxávimus impleátur. Ad Conpletórios vero cotídie idem psalmi repetántur, id est quartum, nonagésimum et centésimum tricésimum tértium.
+  en: |
+    Let Vespers be sung daily with four psalms and let these psalms be begun with the hundred and ninth and continue up to the hundred and forty-seventh, those of them excepted which are set apart for the other hours, namely from the hundred and seventeenth to the hundred and twenty-seventh; and the hundred and thirty-third and the hundred and forty-second. All the rest are to be said at Vespers. And because the psalms come short by three, therefore those are to be divided which of those enumerated above are found somewhat long, namely the hundred and thirty-eighth, the hundred and forty-third and the hundred and forty-fourth. But let the hundred and sixteenth, because it is short, be joined with the hundred and fifteenth. The order of the Vesper psalms having thus been arranged, let the rest, namely, lessons, responsories, hymns, versicles and canticles, be recited as we have above explained. But at Compline let the same psalms be repeated daily; that is to say the fourth, ninetieth and the hundred and thirty-third.
+status:
+  la: verified
+  en: verified