Author Matins Nocturn 2/3 patristic readings for the whole post-Pentecost season

Closes the gap the user found on 2026-08-23 (post-pentecost-13's Matins had
no patristic reading): nocturn-readings/ had content for only one temporal
id (post-pentecost-15, the original mechanism proof date). Since
resolveTemporalId maps every day in a liturgical week to the same id, one
file per id covers the whole week — authored all 23 remaining
post-pentecost-NN ids (01-14, 16-24) from the reference engine's own
Tempora/PentNN-0.txt files. Trinity Sunday (01) keeps its own full proper
office including a displaced-Sunday commemoration; 02-11 have real Nocturn
2+3 content; 12 onward are Nocturn-3-only (homily, Gospel incipit skipped
per convention), reusing the same two responsories the source itself
cross-references week to week.

Rest of the temporal cycle (Advent/Christmas/Epiphany/Septuagesima/Lent/
Easter) is a separate follow-up pass, tracked in TODO.md.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EWzE3kaSZCs79fPBrrE1aF

src/data/propers/nocturn-readings/post-pentecost-20.yml

@@ -0,0 +1,63 @@
+# Nocturn 3, 20th Sunday after Pentecost. Sourced from Tempora/Pent20-0.txt.
+# See post-pentecost-02.yml/post-pentecost-12.yml for sweep method note (no
+# proper Nocturn 2 in the source). Lectio7 bare incipit (John 4:46-53, the
+# healing of the nobleman's son) skipped; Lectio7-9's homily by Pope St.
+# Gregory the Great is one continuous work, combined.
+id: post-pentecost-20
+readings:
+  - nocturn: 3
+    isGospel: false
+    source: "Pope St. Gregory the Great, Homily 28 on the Gospels"
+    text:
+      la: >-
+        Léctio sancti Evangélii, quam modo, fratres, audístis, expositióne non índiget: sed ne hanc
+        táciti præteriísse videámur, exhortándo pótius quam exponéndo in ea áliquid loquámur. Hoc autem
+        nobis solúmmodo de expositióne vídeo esse requiréndum, cur is, qui ad salútem fílio peténdam
+        vénerat, audívit: Nisi signa et prodígia vidéritis, non créditis. Qui enim salútem fílio quærébat,
+        proculdúbio credébat; neque enim ab eo quǽreret salútem, quem non créderet Salvatórem. Quare
+        ergo dícitur: Nisi signa et prodígia vidéritis, non créditis: qui ante crédidit, quam signa
+        vidéret?
+
+
+        Sed mementóte quid pétiit; et apérte cognoscétis, quia in fide dubitávit. Popóscit namque, ut
+        descénderet et sanáret fílium ejus. Corporálem ergo præséntiam Dómini quærébat, qui per spíritum
+        nusquam déerat. Minus ítaque in illum crédidit, quem non putávit posse salútem dare, nisi
+        præsens esset et córpore. Si enim perfécte credidísset, proculdúbio sciret, quia non esset locus
+        ubi non esset Deus.
+
+
+        Ex magna ergo parte diffísus est, qui virtútem non dedit majestáti, sed præséntiæ corporáli.
+        Salútem ítaque fílio pétiit, et tamen in fide dubitávit; quia eum ad quem vénerat, et poténtem ad
+        curándum crédidit, et tamen moriénti fílio esse abséntem putávit. Sed Dóminus, qui rogátur ut
+        vadat, quia non desit ubi invitátur, índicat: solo jussu salútem réddidit, qui voluntáte ómnia
+        creávit.
+      en: >-
+        My brethren, the passage from the Holy Gospel, which ye have just now heard, standeth in need of
+        no explanation. But lest I should seem to pass the same by in idle silence, I will say somewhat
+        thereon, but that rather by way of exhortation than of explanation. Indeed, there seemeth to me
+        to be but one point which calleth for explanation, and that point is this Wherefore was it that
+        when the nobleman went unto the Lord, and besought Him that He would come down and heal his son,
+        Jesus said unto him: "Except ye see signs and wonders, ye will not believe." The very fact that
+        he had come to beseech Christ to heal his son, putteth it beyond all doubt that this nobleman
+        believed if he had not believed Him to be a Saviour, he would not have asked Him to save his son.
+        Wherefore then said Jesus unto him: "Except ye see signs and wonders, ye will not believe," since
+        he was one who had not seen, and yet had believed?
+
+
+        But bethink you what was his prayer, and then shall ye understand clearly wherein his faith was
+        shaky. He "besought Him that He would come down and heal his son." He asked for the bodily
+        presence of Him Who is spiritually always present everywhere. He believed not therefore enough
+        in Christ, for he thought that He could not heal unless He were bodily present. Had his faith
+        been perfect, he would doubtless have known that God is everywhere.
+
+
+        This was therefore a grievously imperfect faith, in attributing the virtue not to Christ's
+        Majesty, but to His bodily presence. Thus it was that his faith was still unsound, even while he
+        was asking for his son's health. For, though he believed concerning Him unto Whom he came that He
+        was mighty to save, yet he thought also that at that moment He was absent from his dying child.
+        But the Lord, being asked to go, showed that, wherever He is called on, He is there, and being He
+        Who, by a simple act of will, brought all things into being, gave health by a simple command.
+    responsory:
+      la: "Duo Séraphim clamábant alter ad álterum: * Sanctus, sanctus, sanctus Dóminus Deus Sábaoth: * Plena est omnis terra glória ejus.\nV. Tres sunt qui testimónium dant in cælo: Pater, Verbum, et Spíritus Sanctus: et hi tres unum sunt.\nR. Plena est omnis terra glória ejus."
+      en: "One Seraph cried unto another: * Holy, Holy, Holy is the Lord God of hosts; * The whole earth is full of His glory.\nV. There are Three That bear record in heaven: the Father, the Word, and the Holy Ghost, and these Three are One.\nR. The whole earth is full of His glory."
+    status: { la: verified, en: verified }