Fix Ascensiontide Sunday precedence and give it its own Matins proper

The Sunday within the Octave of Ascension was letting a Duplex saint win
outright (ascensiontide's Sunday was miscategorized ordinary-sunday
instead of privileged-sunday, the only "great octave" season not already
so classed). Live-verified the reference engine keeps the Sunday primary
and transfers the saint instead. Fixed the category, then authored the
Sunday's own wholly proper Matins (a different psalm scheme entirely, not
a seasonal overlay) via a new per-temporalId override layer.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017XMSokiTD2Qc5vPP2YQu3Q

TODO.md

@@ -4619,3 +4619,37 @@ covering both Advent and Paschaltide.
 New regression test in `tests/hours/matins.test.ts` (`Paschaltide Sunday Nocturns I-III
 seasonal override`) asserts all 5 ordinary Paschaltide Sundays render identically. `npm test`
 (819 passed), `tsc --noEmit`, and `npm run build` all pass.
+
+### Sunday within the Octave of Ascension: real precedence bug, fixed (2026-09-01)
+
+User pushed back on the "not a bug" conclusion above: correctly — the "Duplex+ saint wins
+outright over an Ascensiontide Sunday" case was a real precedence bug, not settled design.
+`data/calendar/temporal-categories.yml` had `ascensiontide`'s Sunday coded `ordinary-sunday`
+(Duplex+ wins outright), the only "great octave" season not already `privileged-sunday`
+(eastertide/pentecost both already were) — no verification comment on that line, unlike every
+other entry in the file. Live-verified (proof date 2026-05-17, St. Paschal Baylon, real Duplex):
+the reference engine titles the day "Dominica infra Octavam Ascensionis ~ Semiduplex Dominica
+minor" and gives it its own wholly proper Matins, no trace of the saint. Fixed: `ascensiontide`
+is now `privileged-sunday`, matching eastertide/pentecost — St. Paschal Baylon now transfers
+(`decideOccurrence`'s existing generic privileged-sunday branch handled this correctly with no
+new code, just the corrected category).
+
+With the calendar now resolving the *right* winner (the Sunday itself, `sunday-after-ascension`),
+Matins still needed real content: this Sunday's own proper is a wholly different psalm scheme
+from the fixed 12-psalm base — Ps 8/10/18/20/23/29 for Nocturn I, Ps 45/46/95/96/98/102 for
+Nocturn II, each of the 12 psalms individually antiphoned (not paired) — plus its own versicles.
+Nocturn III reuses the same 3 canticles as the ordinary-Paschaltide override (Isa 63:1-5, Osee
+6:1-6, Sophonias 3:8-13, already authored) under its own antiphon ("Illi autem profécti
+prædicavérunt ubíque...") — English for that one antiphon is this app's own translation (the
+reference engine's own English tree is genuinely blank there, confirmed not a fetch gap), since
+it's an unambiguous, well-known formula (Mark 16:20).
+
+New `data/hours/matins-sunday-named-nocturn-overrides.yml` — a per-`temporalId` override layer
+(currently just `sunday-after-ascension`) for a specific privileged Sunday whose own proper is
+wholesale different, distinct from the season-wide Advent/Paschaltide overrides above.
+`hours/matins.ts`'s `sundayNocturnFor` now checks this map first (most specific), ahead of the
+season-wide overrides, ahead of the plain default.
+
+New regression tests in `tests/hours/matins.test.ts` (`Sunday within the Octave of Ascension`)
+assert both the calendar winner (Sunday over the saint) and the full Matins content. `npm test`
+(821 passed), `tsc --noEmit`, and `npm run build` all pass.

src/data/calendar/temporal-categories.yml

@@ -82,7 +82,16 @@ bySeason:
   lent: { sunday: privileged-sunday, feria: ordinary-feria }
   passiontide: { sunday: privileged-sunday, feria: ordinary-feria }
   eastertide: { sunday: privileged-sunday, feria: ordinary-feria }
-  ascensiontide: { sunday: ordinary-sunday, feria: ordinary-feria }
+  # The Sunday within the Octave of Ascension is `privileged-sunday`, not
+  # `ordinary-sunday` — live-verified 2026-09-01: the reference engine
+  # titles it "Dominica infra Octavam Ascensionis ~ Semiduplex Dominica
+  # minor" and gives it its own proper Matins content (own antiphons, Ps 8
+  # opening Nocturn I — not the generic fixed Sunday scheme), with St.
+  # Paschal Baylon (Duplex, real May 17) nowhere in it; `ordinary-sunday`'s
+  # Duplex+ threshold would wrongly let that saint win outright instead.
+  # Matches the same "great octave" pattern as eastertide/pentecost above,
+  # both already `privileged-sunday`.
+  ascensiontide: { sunday: privileged-sunday, feria: ordinary-feria }
   pentecost: { sunday: privileged-sunday, feria: ordinary-feria }
   trinitytide: { sunday: ordinary-sunday, feria: ordinary-feria }
   # Corpus Christi/Sacred Heart are themselves "feasts of the Lord" that

src/data/hours/matins-sunday-named-nocturn-overrides.yml

@@ -0,0 +1,104 @@
+# Sunday Matins Nocturns I-III, per-named-Sunday override — keyed by
+# `temporalId`, for a specific privileged Sunday whose own proper is
+# wholesale different from the fixed 12-psalm/3-canticle scheme (not just
+# a seasonal antiphon overlay on the same psalms, the way
+# matins-sunday-advent-nocturn-overrides.yml / matins-sunday-paschaltide-
+# nocturn-overrides.yml are) — different psalm numbers entirely.
+#
+# hours/matins.ts's lookup checks this map first (most specific), ahead of
+# the season-wide overrides, when `temporalId` matches a key here.
+
+# Sunday within the Octave of Ascension (`sunday-after-ascension`) —
+# live-verified against the local reference-engine CGI instance
+# (`prayMatutinum`, Monastic Tridentinum 1617, 2026-09-01, proof date
+# 2026-05-17), titled there "Dominica infra Octavam Ascensionis ~
+# Semiduplex Dominica minor". Added alongside a calendar precedence fix
+# (data/calendar/temporal-categories.yml: ascensiontide's Sunday is
+# `privileged-sunday`, not `ordinary-sunday`) — this Sunday genuinely
+# outranks even a Duplex sanctoral candidate (e.g. St. Paschal Baylon,
+# real May 17), which transfers rather than winning or being commemorated.
+#
+# Each nocturn here uses 6 individually-antiphoned psalms (one antiphon
+# per single psalm, not one per pair the way the base/Advent scheme
+# groups them) — confirmed by the live query, which showed a separate
+# "Ant." before and after every single psalm. Nocturn III reuses the same
+# 3 canticles as the ordinary-Paschaltide override (Isa 63:1-5, Osee
+# 6:1-6, Sophonias 3:8-13 — already authored, no new scripture files
+# needed here) under its own different antiphon/versicle.
+#
+# Nocturn III's antiphon has no English translation in the reference
+# engine's own English tree (confirmed: the paragraph is genuinely empty
+# there, not a fetch/parsing gap) — `en` here is this app's own
+# translation of the underlying Mark 16:20 text (a well-known, unambiguous
+# formula, not a guess), consistent with how every other antiphon in this
+# file is sourced.
+sunday-after-ascension:
+  nocturn1:
+    groups:
+      - psalms: [8]
+        antiphon:
+          la: "Eleváta est magnificéntia tua super cælos, Deus, allelúja."
+          en: "Thy magnificence is elevated above the heavens, O God, alleluia."
+      - psalms: [10]
+        antiphon:
+          la: "Dóminus in templo sancto suo, Dóminus in cælo, allelúja."
+          en: "The Lord is in His holy Temple, the Lord's throne is in heaven, alleluia."
+      - psalms: [18]
+        antiphon:
+          la: "A summo cælo egréssio ejus, et occúrsus ejus usque ad summum ejus, allelúja."
+          en: "His going out is from the end of heaven, and his circuit even to the end thereof, alleluia."
+      - psalms: [20]
+        antiphon:
+          la: "Exaltáre, Dómine, in virtúte tua: cantábimus et psallémus, allelúja."
+          en: "Be thou exalted, O Lord, in thy own strength: we will sing and praise, alleluia."
+      - psalms: [23]
+        antiphon:
+          la: "Elevámini, elevámini, portæ æternáles: † et introíbit rex glóriæ, allelúja."
+          en: "Be lifted up, O eternal gates: and the King of Glory shall enter in, alleluia."
+      - psalms: [29]
+        antiphon:
+          la: "Exaltábo te, Dómine, quóniam suscepísti me, allelúja."
+          en: "I will extol thee, O Lord, for thou hast upheld me, alleluia."
+    versicle:
+      v: { la: "Ascéndit Deus in jubilatióne, allelúja.", en: "God is ascended with jubilee, alleluia." }
+      r: { la: "Et Dóminus in voce tubæ, allelúja.", en: "And the Lord with the sound of trumpet, alleluia." }
+  nocturn2:
+    groups:
+      - psalms: [45]
+        antiphon:
+          la: "Exaltábor in géntibus, et exaltábor in terra, allelúja."
+          en: "I will be exalted among the nations, and I will be exalted in the earth, alleluia."
+      - psalms: [46]
+        antiphon:
+          la: "Ascéndit Deus in jubilatióne, et Dóminus in voce tubæ, allelúja."
+          en: "God is ascended with jubilee, and the Lord with the sound of trumpet, alleluia."
+      - psalms: [95]
+        antiphon:
+          la: "Læténtur cæli, et exsúltet terra, † quia venit Dóminus, allelúja."
+          en: "Let the heavens rejoice, and let the earth be glad, for the Lord is coming, alleluia."
+      - psalms: [96]
+        antiphon:
+          la: "Nimis exaltátus est, allelúja: super omnes deos, allelúja."
+          en: "He is exalted exceedingly, alleluia: above all gods, alleluia."
+      - psalms: [98]
+        antiphon:
+          la: "Dóminus in Sion, allelúja: magnus et excélsus, allelúja."
+          en: "The Lord in Sion, alleluia: is great and high, alleluia."
+      - psalms: [102]
+        antiphon:
+          la: "Dóminus in cælo, allelúja: parávit sedem suam, allelúja."
+          en: "The Lord in heaven, alleluia: hath prepared his throne, alleluia."
+    versicle:
+      v: { la: "Ascéndens Christus in altum, allelúja.", en: "When Christ ascended up on high, alleluia." }
+      r: { la: "Captívam duxit captivitátem, allelúja.", en: "He led captivity captive, alleluia." }
+  nocturn3:
+    canticles:
+      - refs: [{ book: isa, chapter: 63, verses: "1-5" }]
+      - refs: [{ book: osee, chapter: 6, verses: "1-6" }]
+      - refs: [{ book: soph, chapter: 3, verses: "8-13" }]
+    antiphon:
+      la: "Illi autem profécti prædicavérunt ubíque, Dómino cooperánte, et sermónem confirmánte sequéntibus signis, † allelúja, allelúja."
+      en: "But they, going forth, preached everywhere: the Lord working with them, and confirming the word with signs that followed, alleluia, alleluia."
+    versicle:
+      v: { la: "Ascéndo ad Patrem meum, et Patrem vestrum, allelúja.", en: "I ascend to my Father and to your Father, alleluia." }
+      r: { la: "Deum meum, et Deum vestrum, allelúja.", en: "To my God and your God, alleluia." }

src/hours/matins.ts

@@ -97,6 +97,7 @@ import matinsSundayAntiphonsData from '../data/hours/matins-sunday-antiphons.yml
 import matinsSundayNocturn3OverridesData from '../data/hours/matins-sunday-nocturn3-overrides.yml';
 import matinsSundayAdventOverridesData from '../data/hours/matins-sunday-advent-nocturn-overrides.yml';
 import matinsSundayPaschaltideOverridesData from '../data/hours/matins-sunday-paschaltide-nocturn-overrides.yml';
+import matinsSundayNamedOverridesData from '../data/hours/matins-sunday-named-nocturn-overrides.yml';
 import matinsFerialAntiphonsData from '../data/hours/matins-ferial-antiphons.yml';
 import type { Weekday } from '../calendar/types';
 
@@ -154,9 +155,11 @@ function sundayNocturn3For(temporalId: string | undefined): SundayNocturn {
 // and matins-sunday-paschaltide-nocturn-overrides.yml's own headers.
 // Paschaltide here means only `eastertide` (Low Sunday through the Sunday
 // before Ascension) — Easter Sunday itself has its own wholly proper
-// Matins (a separate, tabled gap; see TODO.md's "Easter's own octave"),
-// and `ascensiontide`'s one Sunday (within the Octave of Ascension) has
-// its own genuinely proper content, not this seasonal-overlay shape.
+// Matins (a separate, tabled gap; see TODO.md's "Easter's own octave").
+// `ascensiontide`'s one Sunday (within the Octave of Ascension) has its
+// own genuinely proper content too, but a *different* psalm scheme
+// entirely (not a seasonal overlay on the fixed 12-psalm base) — handled
+// by the per-temporalId `sundayNamedOverrides` below instead.
 interface MatinsSundayNocturnOverrides {
   nocturn1: Partial<SundayNocturn>;
   nocturn2: Partial<SundayNocturn>;
@@ -165,14 +168,32 @@ interface MatinsSundayNocturnOverrides {
 const sundayAdventOverrides = matinsSundayAdventOverridesData as unknown as MatinsSundayNocturnOverrides;
 const sundayPaschaltideOverrides = matinsSundayPaschaltideOverridesData as unknown as MatinsSundayNocturnOverrides;
 
-/** Sunday Nocturn I/II/III content for a given day — a season-wide
- * override (Advent or ordinary Paschaltide, all three nocturns) takes
- * precedence over the plain-season default; Nocturn III additionally
- * checks the per-Sunday Septuagesima-Palm override (`sundayNocturn3For`)
- * when neither season-wide override applies (none of the three ever
- * overlap). */
+// A specific privileged Sunday whose own proper is wholesale different
+// from the fixed 12-psalm/3-canticle scheme, keyed by `temporalId` — see
+// matins-sunday-named-nocturn-overrides.yml's own header (currently just
+// `sunday-after-ascension`). Checked ahead of the season-wide overrides
+// above, though in practice they never collide (no season-wide override
+// exists for `ascensiontide`).
+const sundayNamedOverrides = matinsSundayNamedOverridesData as unknown as Record<string, Partial<MatinsSundayNocturnOverrides>>;
+
+/** Sunday Nocturn I/II/III content for a given day — a per-temporalId
+ * named override (a specific privileged Sunday's own wholesale-different
+ * proper) takes precedence over a season-wide override (Advent or
+ * ordinary Paschaltide, all three nocturns), which takes precedence over
+ * the plain-season default; Nocturn III additionally checks the
+ * per-Sunday Septuagesima-Palm override (`sundayNocturn3For`) when none
+ * of the above apply (none of the four ever overlap). */
 function sundayNocturnFor(nocturnKey: 'nocturn1' | 'nocturn2' | 'nocturn3', day: LiturgicalDay, temporalId: string | undefined): SundayNocturn {
   const base = nocturnKey === 'nocturn3' ? sundayNocturn3For(temporalId) : sundayAntiphons[nocturnKey];
+  const namedOverride = temporalId ? sundayNamedOverrides[temporalId]?.[nocturnKey] : undefined;
+  if (namedOverride) {
+    return {
+      groups: namedOverride.groups ?? base.groups,
+      canticles: namedOverride.canticles ?? base.canticles,
+      antiphon: namedOverride.antiphon ?? base.antiphon,
+      versicle: namedOverride.versicle ?? base.versicle,
+    };
+  }
   const seasonOverrides = day.season === 'advent' ? sundayAdventOverrides : day.season === 'eastertide' ? sundayPaschaltideOverrides : undefined;
   const override = seasonOverrides?.[nocturnKey];
   if (!override) return base;

tests/hours/matins.test.ts

@@ -1,6 +1,7 @@
 import { describe, expect, it } from 'vitest';
 import { resolveOrdo } from '../../src/hours';
 import { getPsalmsFor } from '../../src/psalter/distribution';
+import { resolveDay } from '../../src/calendar';
 
 // Two clean proof dates, one per branch — see hours/matins.ts's own header
 // and TODO.md for why this is a mechanism build with a small content slice,
@@ -318,6 +319,45 @@ describe('resolveOrdo("matins", ...) Paschaltide Sunday Nocturns I-III seasonal
   });
 });
 
+// Real bug (found 2026-09-01, same day the user flagged it): the Sunday
+// within the Octave of Ascension was letting a Duplex sanctoral candidate
+// (St. Paschal Baylon, real May 17) win outright, because
+// data/calendar/temporal-categories.yml had ascensiontide's Sunday coded
+// `ordinary-sunday` (Duplex+ wins outright) instead of `privileged-sunday`
+// (nothing wins outright). Live-verified (2026-05-17): the reference
+// engine titles this day "Dominica infra Octavam Ascensionis ~ Semiduplex
+// Dominica minor" and gives it its own wholly proper Matins (own psalms —
+// Ps 8/10/18/20/23/29 for Nocturn I, not the fixed 20-25 — own antiphons,
+// same 3 canticles as the ordinary-Paschaltide override) with no trace of
+// the saint, who transfers instead.
+describe('resolveOrdo("matins", ...) Sunday within the Octave of Ascension (2026-09-01 fix)', () => {
+  it("the Sunday wins outright over St. Paschal Baylon (Duplex), who transfers", () => {
+    const day = resolveDay('2026-05-17');
+    expect(day.winner).toEqual({ kind: 'temporal', id: 'sunday-after-ascension' });
+  });
+
+  it('renders its own genuinely proper Matins, not the fixed 12-psalm scheme', () => {
+    const ordo = resolveOrdo('matins', '2026-05-17');
+    const psalms = ordo.parts.filter((p) => p.kind === 'psalm').map((p) => (p as { psalmNumber: number }).psalmNumber);
+    expect(psalms).toEqual([3, 94, 8, 10, 18, 20, 23, 29, 45, 46, 95, 96, 98, 102]);
+
+    const canticles = ordo.parts.filter((p) => p.kind === 'canticle') as { canticleId: string }[];
+    expect(canticles.map((c) => c.canticleId)).toEqual(['isa-63-1-5', 'osee-6-1-6', 'soph-3-8-13']);
+
+    const antiphons = ordo.parts.filter((p) => p.kind === 'antiphon') as { text: { text: Record<string, string> } }[];
+    expect(antiphons[1]?.text.text.la).toBe('Ant. Eleváta est magnificéntia tua super cælos, Deus, allelúja.');
+    expect(antiphons.at(-1)?.text.text.la).toBe(
+      'Ant. Illi autem profécti prædicavérunt ubíque, Dómino cooperánte, et sermónem confirmánte sequéntibus signis, † allelúja, allelúja.',
+    );
+
+    const versicles = ordo.parts.filter((p) => p.kind === 'versicle') as { text: { text: Record<string, string> } }[];
+    const [, nocturn1, nocturn2, nocturn3] = versicles;
+    expect(nocturn1?.text.text.la).toBe('V. Ascéndit Deus in jubilatióne, allelúja.\nR. Et Dóminus in voce tubæ, allelúja.');
+    expect(nocturn2?.text.text.la).toBe('V. Ascéndens Christus in altum, allelúja.\nR. Captívam duxit captivitátem, allelúja.');
+    expect(nocturn3?.text.text.la).toBe('V. Ascéndo ad Patrem meum, et Patrem vestrum, allelúja.\nR. Deum meum, et Deum vestrum, allelúja.');
+  });
+});
+
 describe('resolveOrdo("matins", ...) Duplex+ weekday-feast (3-nocturn, non-Sunday) branch', () => {
   // 2026-08-17 -- St. Lawrence's own octave closing day ("In Octava S.
   // Laurentii Martyris ~ Duplex"), live-verified directly against the