Add December Matins readings for SanctiM-track saints, completing the pass

13 of December's 15 SanctiM-track saints authored (st-bibiana, st-nicholas,
st-ambrose, immaculate-conception, st-damasus, st-lucy, st-thomas-apostle,
st-stephen-protomartyr, st-john-apostle, holy-innocents, st-thomas-becket,
st-silvester-i, st-eusebius-of-vercelli); st-barbara and st-melchiades left
unauthored as Common-only. This is the twelfth and final month of the
SanctiM (Monastic 1617)-track saints' Matins readings pass — 129 saints
authored across the whole year.

Adding St. Eusebius of Vercelli's content surfaces a 3rd Matins lesson on
the existing Advent III Tuesday proof date (Dec 15 falls under his
commemoration); updated matins.test.ts accordingly — the "commemorations
get their own reading" design working as intended, not a regression.

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

src/data/propers/nocturn-readings/st-bibiana.yml

@@ -0,0 +1,84 @@
+# Matins Nocturn 2 reading for St. Bibiana, Virgin, Martyr (Dec 2) —
+# SanctiM/12-02.txt inherits the whole day (`@Sancti/12-02`) with no
+# Nocturn 2 override, so this feast's own proper content is sourced
+# from the Tridentine track exactly as for a pre-1955 saint (see
+# memory vu-matins-pre1955-saints, vu-matins-sanctim-saints).
+# web/www/horas/Latin/Sancti/12-02.txt, English/Sancti/12-02.txt.
+# Lectio4-6 combined into one reading, one continuous vita, no
+# genuine source break.
+id: st-bibiana
+readings:
+  - nocturn: 2
+    isGospel: false
+    text:
+      la: >-
+        Bibiana virgo Romana, nobili genere nata, christiana fide nobilior fuit. Ejus enim
+        pater Flavianus sub Juliano Apostata impiissimo tyranno expræfectus, servilibusque
+        notis compunctus, ad aquas Taurinas deportatus, martyr occubuit. Mater Dafrosa, et
+        filiæ primum conclusæ domi, ut inedia conficerentur; mox relegata mater extra Urbem
+        capite plexa est. Mortuis autem piis parentibus, Bibiana cum sorore sua Demetria bonis
+        omnibus exspoliatur; Apronianus Urbis prætor, pecuniis inhians, sorores persequitur;
+        quas humana prorsus ope destitutas, Deo mirabiliter, qui dat escam esurientibus,
+        enutriente, cum vivaciores vegetioresque conspexisset, vehementer est admiratus.
+
+
+        Suadet nihilominus Apronianus, ut venerentur deos Gentium, amissas ideo opes,
+        imperatoris gratiam, præclarissimas nuptias consecuturæ. Si secus fecerint, minatur
+        carceres, virgas, secures. At illæ neque blanditiis, neque minis a recta fide
+        declinantes, paratæ potius mori, quam fœdari moribus ethnicorum, prætoris impietatem
+        constantissime detestantur. Quare Demetria ob oculos Bibianæ repente corruens, obiit
+        in Domino: Bibiana Rufinæ mulieri vaferrimæ seducenda traditur, quæ ab incunabulis
+        edocta, christianas leges, et illibatum servare virginitatis florem, se ipsa fortior
+        feminæ superavit insidias, et prætoris astus delusit.
+
+
+        Nihil autem proficiente Rufina, quæ, præter dolosa verba, illam quotidie verberibus
+        affligebat, ut de sancto proposito dimoveret, spe sua frustratus prætor, accensus ira,
+        quod in Bibiana perdidisset operam, a lictoribus eam denudari, vinctisque manibus
+        columnæ alligari, eamque plumbatis cædi jubet, donec efflaret animam. Cujus sacrum
+        corpus objectum canibus biduo jacuit in foro Tauri, illæsum tamen, et divinitus
+        servatum; quod deínde Joannes presbyter sepelivit noctu juxta sepulcrum sororis et
+        matris ad palatium Licinianum, ubi usque in præsens exstat ecclesia Deo, sanctæ
+        Bibianæ nomine, dicata, quam Urbanus octavus instauravit, sanctarum Bibianæ,
+        Demetriæ, et Dafrosæ corporibus in ea repertis, et sub ara maxima collocatis.
+      en: >-
+        Bibiana was a Roman maiden, distinguished on account of the nobility of her family,
+        but now far more distinguished for her confession of Christ. In the reign of the foul
+        tyrant, Julian the Apostate, her father Flavian, although he was an ex-Praefect, was
+        branded as a slave and banished to Acquapendente, not far from Rome, where he soon
+        died a martyr for his faith. His wife, Dafrosa, and his two daughters, Bibiana and
+        Demetria, were first imprisoned in their own house, with the idea of starving them to
+        death; but the mother was afterwards taken outside the city and beheaded. Bibiana and
+        her sister Demetria, after the death of their holy parents, were stripped of all they
+        had in the world. Apronianus, Praetor of the city, who hankered after their property,
+        continued to persecute them, but although they were destitute of all human support,
+        God, Who giveth bread to the hungry, fed them, and kept them in health, life, and
+        strength, to the wonder of their enemies.
+
+
+        Apronianus then attacked them, to make them worship the gods of the Gentiles, and
+        promised them the restoration of their property, the favour of the Emperor, and a
+        great marriage for each of them, if they would give way, and, on the other hand,
+        imprisonment, stripes, and death. But neither promises nor threats availed, for they
+        remained firm in the faith, being resolved rather to die than to pollute themselves by
+        doing according to the deeds of the heathen; and, as for the iniquity of the Praetor,
+        they loathed it continually. At length the strength of Demetria gave way, and she fell
+        down suddenly, and died in the Lord, before the eyes of her sister Bibiana. Then
+        Bibiana was put into the hands of an artful woman named Rufina, to seduce her if
+        possible; but she had known the law of Christ from her childhood, and kept the lily of
+        her purity undefiled, triumphing over the efforts of that vile person, and
+        disappointing the lust of the Praetor.
+
+
+        Then, when Rufina saw that her false words availed not, she took to blows, and
+        scourged Bibiana daily, but the saint was not staggered in her holy resolution. At
+        last the Praetor, mad with baffled lust, when he found his labour was thrown away,
+        ordered his lictors to strip her naked, hang her up by the hands to a pillar, and flog
+        her to death with whips weighted with lead. When all was over, her sacred body was
+        thrown out for the dogs to eat. It lay two days in the Forum Tauri, but the animals
+        would not touch it; and, at last, a Priest, named John, took it, and buried it by
+        night beside the graves of her mother and sister, near the Licinian Palace. This is the
+        place where there is still a church, dedicated in the name of St. Bibiana. When this
+        church was being restored by Urban VIII., the bodies of these three holy women,
+        Bibiana, Demetria, and Dafrosa, were found, and were re-buried under the High Altar.
+    status: { la: verified, en: verified }