Add 4 more fixed Lord's/BVM feasts, and fix Our Lady of the Snows' Nocturn 3

Finding of the Holy Cross (May 3), the Transfiguration (Aug 6), the
Exaltation of the Holy Cross (Sep 14), and Dedication of the Basilica of
the Most Holy Savior (Nov 9, the Lateran) were all excluded under the
same stale "fixed feast of the Lord, not modeled" note that turned out
wrong for Our Lady of the Snows. All four have real, complete content in
the reference engine. Presentation of the BVM (Nov 21) was excluded
under the equivalent "fixed BVM feast" note and is added the same way.

- finding-of-the-holy-cross: fully proprium, own collect/antiphon/Matins
  throughout; now correctly outranks
  ss-alexander-eventius-theodulus-and-juvenal, matching what that
  saint's own file already documented as the live reality.
- transfiguration: same proprium shape. Its subordinate saints (Ss.
  Xystus/Felicissimus/Agapitus) stay excluded -- blocked by the real,
  separate octave/subordination-rendering gap, not by an unmodeled
  Transfiguration.
- exaltation-of-the-holy-cross: reuses the Finding of the Holy Cross's
  content wholesale (ex Sancti/05-03) -- collect/antiphon via a cross-id
  `propers` pointer, Matins nocturn-readings duplicated (no cross-id
  lookup exists for that mechanism).
- dedication-of-the-basilica-of-the-most-holy-savior: reuses the
  existing Common-of-a-Dedication (collect-c8, benedictus-antiphon-
  common-of-a-dedication), real unique Nocturn 2 vita of her own. Her
  secondary, St. Theodore, stays excluded for the same
  octave/subordination reason as above.
- presentation-of-the-bvm: real unique collect of her own; her
  Benedictus antiphon is a substituted Common reference
  (truncate-and-add-alleluia edit specific to this feast), authored as
  her own file.

Also: our-lady-of-the-snows.yml was missing its own Nocturn 3 (she
defers to Commune/C11's own Gospel-incipit-plus-Bede-homily, same as
Presentation of the BVM) -- added.

Test updates (not regressions): three tests had fixed proof dates
colliding with the newly-added feasts, updated to reflect the new,
correct behavior. npm test (365 tests) and tsc --noEmit both pass.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/data/propers/nocturn-readings/our-lady-of-the-snows.yml

@@ -1,15 +1,26 @@
-# Matins Nocturn 2 reading for Our Lady of the Snows (Dedication of St.
-# Mary Major), Aug 5 — Duplex Majus. `Sancti/08-05.txt`'s untagged
+# Matins Nocturn 2-3 readings for Our Lady of the Snows (Dedication of
+# St. Mary Major), Aug 5 — Duplex Majus. `Sancti/08-05.txt`'s untagged
 # [Rank] block. SanctiM/08-05.txt inherits the whole day (`@Sancti/08-05`)
 # with no Nocturn 2/3 override (just reslicing Lectio4-6 into a 12-lesson
 # Monastic structure via `@Sancti/08-05:LectioN` cross-references), so
 # this feast's own content is sourced from the Tridentine track directly.
 # web/www/horas/Latin/Sancti/08-05.txt, English/Sancti/08-05.txt.
-# Lectio4-6 combined into one reading — the miraculous-snowfall founding
-# legend of the basilica of St. Mary Major, one continuous narrative, no
-# genuine source break. (The source's own `[Lectio94]` is a shorter,
-# alternate simplex-rank retelling of the same story, not additional
-# content — not authored separately.)
+#
+# Nocturn 2: Lectio4-6 combined into one reading — the miraculous-
+# snowfall founding legend of the basilica of St. Mary Major, one
+# continuous narrative, no genuine source break. (The source's own
+# `[Lectio94]` is a shorter, alternate simplex-rank retelling of the
+# same story, not additional content — not authored separately.)
+# Nocturn 3: her own file has no Lectio7-9 at all (her `[Rule]` is
+# `ex C11`), so — like the day's collect/antiphon — this defers to the
+# Common of Feasts of the BVM's own Nocturn 3 (Commune/C11.txt): a bare
+# Gospel incipit (Luke 11:27-28, "Et réliqua") followed by the Venerable
+# Bede's homily. Per the established convention of not transcribing
+# bare incipits, only the homily is authored here (not marked isGospel).
+# Same shared C11 content also used by
+# presentation-of-the-bvm.yml's own Nocturn 3 — the Matins mechanism has
+# no cross-id lookup for nocturn-readings the way collect/antiphon do
+# via `propers`, so it's duplicated rather than referenced.
 id: our-lady-of-the-snows
 readings:
   - nocturn: 2
@@ -70,3 +81,78 @@ readings:
         Feast-day that taketh name from the wonderful fall of snow which on this day took
         place.
     status: { la: verified, en: verified }
+
+  - nocturn: 3
+    isGospel: false
+    source: "The Venerable Bede, Commentary on Luke, Book IV, ch. 49 (on Luke 11:27-28)"
+    text:
+      la: >-
+        Magnæ devotiónis et fídei hæc múlier osténditur, quæ, scribis et pharisǽis Dóminum
+        tentántibus simul et blasphemántibus, tanta ejus incarnatiónem præ ómnibus
+        sinceritáte cognóscit, tanta fidúcia confitétur, ut et præséntium prócerum
+        calúmniam, et futurórum confúndat hæreticórum perfídiam. Nam, sicut tunc Judǽi,
+        Sancti Spíritus ópera blasphemándo, verum consubstantialémque Patri Dei Fílium
+        negábant; sic hærétici póstea, negándo Maríam semper Vírginem, Sancti Spíritus
+        operánte virtúte, nascitúro cum humánis membris Unigénito Dei, carnis suæ matériam
+        ministrásse, verum consubstantialémque matri Fílium hóminis fatéri non debére
+        dixérunt.
+
+
+        Si caro Verbi Dei secúndum carnem nascéntis a carne Vírginis matris pronuntiátur
+        extránea, sine causa venter qui eam portásset, úbera quæ lactássent, beatificántur.
+        Dicit autem Apóstolus: Quia misit Deus Fílium suum, factum ex mulíere, factum sub
+        lege. Neque audiéndi sunt, qui legéndum putant: Natum ex mulíere, factum sub lege,
+        sed Factum ex mulíere; quia concéptus ex útero virgináli, carnem non de níhilo, non
+        aliúnde, sed matérna traxit ex carne. Alióquin nec vere Fílius hóminis dicerétur,
+        qui oríginem non habéret ex hómine. Et nos ígitur, his contra Eutychen dictis,
+        extollámus vocem cum Ecclésia cathólica, cujus hæc múlier typum gessit, extollámus
+        et mentem de médio turbárum, dicamúsque Salvatóri: Beátus venter qui te portávit, et
+        úbera quæ suxísti. Vere enim beáta parens, quæ, sicut quidam ait, Eníxa est puérpera
+        Regem, qui cælum terrámque tenet per sǽcula.
+
+
+        Quinímmo beáti qui áudiunt verbum Dei et custódiunt. Pulchre Salvátor attestatióni
+        mulíeris ánnuit, non eam tantúmmodo quæ Verbum Dei corporáliter generáre merúerat,
+        sed et omnes qui idem Verbum spiritáliter audítu fídei concípere, et boni óperis
+        custódia vel in suo vel in proximórum corde párere et quasi álere studúerint,
+        asséverans esse beátos; quia, et éadem Dei Génetrix, et inde quidem beáta quia Verbi
+        incarnándi minístra facta est temporális, sed inde multo beátior quia ejúsdem semper
+        amándi custos manébat ætérna.
+      en: >-
+        It is plain that this was a woman of great earnestness and faith. The Scribes and
+        Pharisees were at once tempting and blaspheming the Lord, but this woman so clearly
+        grasped His Incarnation, and so bravely confessed the same, that she confounded both
+        the lies of the great men who were present, and the faithlessness of the heretics who
+        were yet to come. Even as the Jews then, blaspheming the works of the Holy Ghost,
+        denied the very Son of God Who is of one substance with the Father, so afterwards did
+        the heretics, by denying that Mary always a Virgin did, under the operation of the
+        Holy Ghost, supply flesh to the Only begotten One of God, when He was about being
+        born in an human Body, even so, I say, did the heretics deny that the Son of Man
+        should be called a true Son, Who is of one substance with His Mother.
+
+
+        If we shall say that the Flesh, Wherewith the Son of God was born in the flesh, was
+        something outside of the flesh of the Virgin His Mother, without reason should we
+        bless the womb that bore Him, and the paps which He hath sucked. But the Apostle
+        saith: "God sent forth His Son, made of a woman, made under the law", and they are
+        not to be listened to who read this passage: "Born of a woman, made under the law."
+        He was made of a woman, for He was conceived in a virgin's womb, and took His Flesh,
+        not from nothing, not from elsewhere, but from the flesh of His Mother. Otherwise,
+        and if He had not been sprung of a woman, He could not with truth be called the Son
+        of man. Let us therefore, denying the doctrine of Eutyches, lift up our voice, along
+        with the Universal Church, whereof that woman was a figure, let us lift up our heart
+        as well as our voice from the company, and say unto the Saviour: Blessed is the womb
+        that bare thee, and the paps which thou hast sucked. Blessed Mother, of whom one hath
+        said thou art His Mother, Who reigns over earth and over heaven for ever.
+
+
+        Yea, rather, blessed are they that hear the Word of God and keep it. How nobly doth
+        the Saviour say "Yea" to the woman's blessing, declaring also that not only is she
+        blessed who was meet to give bodily birth to the Word of God, but that all they who
+        spiritually conceive the same Word by the hearing of faith, and, by keeping it
+        through good works, bring it forth and, as it were, carefully nurse it, in their own
+        hearts, and in the hearts of their neighbours, are also blessed. Yea, and that the
+        very Mother of God herself was blessed in being for a while the handmaid of the Word
+        of God made Flesh, but that she was much more blessed in this, that through her love
+        she keepeth Him for ever.
+    status: { la: verified, en: verified }