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/02-25.yml

@@ -0,0 +1,13 @@
+# Verified against Divinum Officium (Latin Regula, English translation).
+canonicalDate: "02-25"
+label:
+  la: "Régula Sancti Patri Nostri Benedícti. Caput 19: De disciplína psalléndi"
+  en: "The Rule of our Holy Father Benedict. Chapter 19: Concerning the Discipline of Saying Office"
+text:
+  la: |
+    Ubíque crédimus divínam esse præséntiam et óculos Dómini in omni loco speculári bonos et malos, máxime tamen hoc sine áliqua dubitatióne credámus, cum ad opus divínum adsístimus. Ideo semper mémores simus quod ait Prophéta: Servíte Dómino in timóre, et íterum: Psállite sapiénter, et: In conspéctu angelórum psallam tibi. Ergo considerémus quáliter opórteat in conspéctu Divinitátis et angelórum ejus esse, et sic stemus ad psalléndum, ut mens nostra concórdet voci nostræ.
+  en: |
+    We believe that the divine presence is on all sides and that the eyes of the Lord behold all, both good and bad wheresoever they may be. Especially however let us believe this without any doubt whatever when we assist at the Work of God: and thus let us be always mindful of what the prophet says: “Serve the Lord in fear”; and again: “Sing wisely”; and: “In the sight of the angels will I sing to Thee.” Therefore let us consider how we ought to comport ourselves in the sight of God and His angels and let us so take our part in the office that mind accord with voice.
+status:
+  la: verified
+  en: verified