Add August Matins readings for SanctiM-track saints

13 of August's 16 SanctiM-track saints authored, including the Duplex
I class feasts of St. Lawrence and the Assumption of the B.V.M. The
Assumption's presence confirms this app's calendar already maps fixed
BVM feasts, despite an older note in the parent workspace CLAUDE.md
suggesting otherwise -- flagged in memory as stale documentation to
verify against, not trust blindly. 3 saints left unsourced (Common-only
or Nocturn-1-only vigil content).

src/data/propers/nocturn-readings/st-stephen-i.yml

@@ -0,0 +1,61 @@
+# Matins Nocturn 2 reading for St. Stephen I, Pope, Martyr (Aug 2). No
+# genuine SanctiM match: the correct Tridentine file is the suffixed
+# `Sancti/08-02o.txt` (the plain `Sancti/08-02.txt` is St. Alphonsus
+# Liguori instead, a later saint occupying the general calendar's own
+# Aug 2 slot), and the only SanctiM files for this date bases
+# `@Sancti/08-02` — same "don't trust the plain file" wrinkle as the
+# pre-1955 pass (memory vu-matins-pre1955-saints); a missed
+# pre-1955-pool candidate rather than a genuine SanctiM case (see
+# memory vu-matins-sanctim-saints).
+# web/www/horas/Latin/Sancti/08-02o.txt, English/Sancti/08-02o.txt.
+# Single lesson (simplex-feast Lectio93), one continuous account, no
+# responsory given in the source.
+id: st-stephen-i
+readings:
+  - nocturn: 2
+    isGospel: false
+    text:
+      la: >-
+        Stephanus Romanus pontificátum gessit Valeriáno et Gallieno imperatóribus. Instituit
+        ut sacerdótes et diáconi nusquam sacris vestibus, nisi in ecclésia, uteréntur.
+        Baptizatos ab hæreticis, íterum baptizari vetuit, rescribens sancto Cypriáno verbis
+        illis: Nihil innovétur, nisi quod traditum est. Multos étiam ad Christum convértit, in
+        iis Olympium tribunum cum uxore Exsuperia et fílio Theodúlo, item Nemesium tribunum
+        cum tota família, óculis Lucillæ ejus fíliæ restitútis: qui omnes Jesu Christi
+        Mártyres fuérunt. Sed, vehementius jam ingravescénte persecutióne imperatórum,
+        Stephanus, convocato clero, ad martyrium suos hortabátur, in cryptisque Mártyrum
+        assidue Missas et concília celebrábat. Qui, cum aliquándo raptus esset ab infidelibus
+        ad templum Martis ut ei sacrificaret, líbere negávit se dæmónibus eum honórem velle
+        tribúere, qui uni Deo deberétur. Quibus in verbis Martis statua terræmotu cóncidit
+        templumque contrémuit. Quare ómnibus aufugiéntibus qui Stephanum tenébant, Pontifex ad
+        suos revértitur in cœmetérium Lucinæ; quos, divinis præceptis ínstruens, sacraménto
+        corporis Christi communicávit; ibique, dum Missárum solemnia pérficit; adveniéntibus
+        íterum imperatórum satellítibus, ei in sua sede caput abscínditur. Corpus, cum eadem
+        sede conspersa Mártyris sánguine, a clericis sepúltum est in cœmeterio Callísti, quarto
+        Nonas Augusti. Vixit in pontificatu annos tres, menses tres, dies viginti duos. Habuit
+        ordinatiónes duas mense Decembri, quibus creávit presbyteros sex, diaconos quinque,
+        episcopos tres.
+      en: >-
+        This Stephen was a Roman, and exercised the Popedom in the reign of the Emperors
+        Valerian and Gallienus. It was his ordinance which forbade Priests and Deacons ever to
+        use their hallowed garments except in the Church. He forbade a re-baptism of such as had
+        been baptized by heretics, writing to St. Cyprian in these words: Let us have no
+        innovations, but only what hath been handed down unto us. He turned many to Christ, and,
+        among them, the Tribune Olympius, with his wife Exuperia, and his son Theodulus, and the
+        Tribune Nemesius, to whose blind daughter he had given sight, along with all his
+        household. All these were martyrs for Jesus Christ. When the persecution of the
+        Emperors was waxing dreader and more dread, Stephen gathered together the clergy, and
+        exhorted them to be brave in lifting up their testimony, and himself celebrated Masses
+        and Councils in the Catacombs. He was caught by some unbelievers, and haled to the temple
+        of Mars, to do sacrifice to that idol, but he boldly said he would never pay to devils an
+        honour which it behoved to give to God only. As he spake these words an earthquake made
+        the image of Mars to fall down, and all the temple to tremble. All they that held
+        Stephen fled, and the Pope went back to his own people in the cemetery of Lucina. He
+        there delivered to them a discourse full of the Word of God, and gave them the Communion
+        of the Sacrament of the Body of Christ. While he was finishing the Mass, the soldiers of
+        the Emperor again brake in upon them, and his head was cut off as he sat in his chair.
+        The reliques of the Martyr, along with the chair stained with his blood, were buried by
+        the clergy in the cemetery of Callistus, upon the 2nd day of August. He lived as Pope
+        three years, three months, and twenty two days. He held two ordinations in the month of
+        December, and in them ordained six Priests, five Deacons, and three Bishops.
+    status: { la: verified, en: verified }