Add Te decet laus to Matins, drop Ps 129/50 from ferial Preces

Matins now sings "Te decet laus" (Psalterium/Common/Prayers.txt's [Te
decet]) immediately after the Te Deum on every 3-nocturn day, matching
Rule of Benedict ch. 11's close of Vigils. New common text
te-decet-laus.yml, wired into both matins.ts branches that render a Te
Deum; absent on ferial days along with it.

Also drops Psalm 129 (De profundis) from the Lauds ferial Preces and
Psalm 50 (Miserere) from the Vespers ferial Preces, per direct
instruction — both were embedded inline in the live-transcribed text.
Updated the affected fixture tests to key off a versicle that survives
the removal instead of the now-absent psalm text.

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

TODO.md

@@ -32,25 +32,27 @@ across every hour and content type in this app.
      needs bilingual voice selection (La/En) worked out, and quality for Latin pronunciation
      is an open question. Open, not started — needs its own design pass before content/UI work
      begins.
-   - Matins: "Te decet laus" (the short versicle sung right after the closing Gospel+"Amen",
+   - ~~Matins: "Te decet laus"~~ — done (2026-08-23). Added as a new common text
-     opening Lauds — Rule of Benedict ch. 13, `data/regula/02-13.yml`) isn't modeled or
+     (`data/propers/common/te-decet-laus.yml`, sourced from `Psalterium/Common/Prayers.txt`'s
-     displayed anywhere. `post-pentecost-15.yml`'s own header comment already flagged this as
+     `[Te decet]` block) rendered as a `versicle` part immediately after the Te Deum on every
-     "a known simplification"; the user asked (2026-08-23) for it to actually be shown. Needs a
+     3-nocturn day (Sunday or Duplex+), in both `hours/matins.ts` branches that push a Te Deum.
-     text/part decided (own `ResolvedPart` kind vs. reusing an existing one like `versicle`)
+     Not modeled: the historical Gospel-read-again-in-full step that live-precedes it (a
-     and where in the Matins ordo it renders (after the Gospel-reading-again-in-full that
+     pre-existing, separate known simplification — see
-     currently closes Nocturn 3, before/instead of the existing Benedicamus/Fidelium close —
+     `data/propers/nocturn-readings/post-pentecost-15.yml`'s own header comment). Absent on
-     see memory `vu-matins-closing`). Not started.
+     ferial (1-nocturn) days, same gating as the Te Deum itself. `tests/hours/matins.test.ts`
+     covers both the Sunday branch's presence/content and the ferial branch's absence.
    - ~~Matins nocturn-readings responsory formatting~~ — done (2026-08-23), see "Nocturn-
      readings responsory marker fix" below.
-   - Lauds/Vespers ferial Preces (`data/propers/common/lauds-preces-feriales.yml`,
+   - ~~Lauds/Vespers ferial Preces psalms~~ — done (2026-08-23). Psalm 129 (De profundis) and
-     `vespers-preces-feriales.yml`) each embed a full psalm inline within the Preces text
+     its own trailing Gloria Patri deleted wholesale from
-     itself — Psalm 129 (De profundis) at Lauds, Psalm 50 (Miserere) at Vespers, per the
+     `data/propers/common/lauds-preces-feriales.yml`'s `text.la`/`text.en`; Psalm 50 (Miserere)
-     reference engine's own `[Preces feriales Vespera] @:Preces feriales Laudes:s/129/50/`
+     and its own Gloria Patri likewise from `vespers-preces-feriales.yml`. Surrounding V/R
-     substitution (see each file's own header comment). User asked (2026-08-23) to remove
+     litany needed no adjustment — the psalm block sat between two already-independent V/R
-     both psalms from the Preces. Not started — needs deciding whether to just delete the
+     sequences. Both files' header comments updated to flag the drop as deliberate, not a
-     psalm block (and its own trailing Gloria Patri line) from each file's `text.la`/`text.en`
+     transcription gap. `tests/hours/lauds.test.ts` and `vespers.test.ts` updated to
-     wholesale, or whether the surrounding V/R litany needs any adjustment once the psalm's
+     distinguish the fuller ferial Preces from the short Sunday/feast litany via a versicle
-     gone.
+     that survives the psalm's removal ("Ego dixi: Dómine, miserére mei") instead of the now-
+     absent psalm text.
 
 2. **Minimal-proof-done, bulk content pending** — mechanism is built and trusted (a proof
    date/entry already resolves correctly end-to-end); what's left is authoring/importing more

src/data/propers/common/lauds-preces-feriales.yml

@@ -15,6 +15,10 @@
 # conditional markup. The King/nation versicle pair, by contrast, *is*
 # rendered live despite the template's own rubric note suggesting
 # otherwise -- same live-over-template discipline.
+#
+# Psalm 129 (De profundis), which the live render embeds between the first
+# and second V/R blocks with its own Gloria Patri, is deliberately dropped
+# here per direct instruction (2026-08) -- not a transcription gap.
 id: lauds-preces-feriales
 text:
   la: |
@@ -51,18 +55,6 @@ text:
     V. Dómine, exáudi oratiónem meam.
     R. Et clamor meus ad te véniat.
 
-    Psalmus 129.
-    De profúndis clamávi ad te, Dómine: Dómine, exáudi vocem meam.
-    Fiant aures tuæ intendéntes, in vocem deprecatiónis meæ.
-    Si iniquitátes observáveris, Dómine: Dómine, quis sustinébit?
-    Quia apud te propitiátio est: et propter legem tuam sustínui te, Dómine.
-    Sustínuit ánima mea in verbo ejus: sperávit ánima mea in Dómino.
-    A custódia matutína usque ad noctem: speret Israël in Dómino.
-    Quia apud Dóminum misericórdia: et copiósa apud eum redémptio.
-    Et ipse rédimet Israël, ex ómnibus iniquitátibus ejus.
-    V. Glória Patri, et Fílio, et Spirítui Sancto.
-    R. Sicut erat in princípio, et nunc, et semper, et in sǽcula sæculórum. Amen.
-
     V. Dómine, Deus virtútum, convérte nos.
     R. Et osténde fáciem tuam, et salvi érimus.
     V. Exsúrge, Christe, ádjuva nos.
@@ -103,18 +95,6 @@ text:
     V. O Lord, hear my prayer.
     R. And let my cry come unto thee.
 
-    Psalm 129.
-    Out of the depths I have cried to thee, O Lord: Lord, hear my voice.
-    Let thy ears be attentive to the voice of my supplication.
-    If thou, O Lord, wilt mark iniquities: Lord, who shall stand it.
-    For with thee there is merciful forgiveness: and by reason of thy law, I have waited for thee, O Lord.
-    My soul hath relied on his word: my soul hath hoped in the Lord.
-    From the morning watch even until night, let Israel hope in the Lord.
-    Because with the Lord there is mercy: and with him plentiful redemption.
-    And he shall redeem Israel from all his iniquities.
-    V. Glory be to the Father, and to the Son, and to the Holy Ghost.
-    R. As it was in the beginning, is now, and ever shall be, world without end. Amen.
-
     V. Turn us again, O Lord, God of Hosts.
     R. Show us thy face, and we shall be whole.
     V. Arise, O Christ, and help us.

src/data/propers/common/te-decet-laus.yml

@@ -0,0 +1,17 @@
+# Sourced from Psalterium/Common/Prayers.txt's [Te decet] block. Rule of
+# Benedict ch. 11: after the abbot reads the closing Gospel following the
+# Te Deum, all reply Amen, then the abbot begins this versicle, closing
+# Vigils — sung only on a 3-nocturn day (Sunday or Duplex+), right after
+# the Te Deum, same gating as `te-deum` itself. This app doesn't model the
+# Gospel-read-again-in-full step that precedes it live (a known
+# simplification, see data/propers/nocturn-readings/post-pentecost-15.yml's
+# own header comment) — this versicle is added directly after the Te Deum.
+id: te-decet-laus
+text:
+  la: |
+    V. Te decet laus, te decet hymnus: tibi glória Deo Patri, et Fílio, cum Spíritu Sancto in sǽcula sæculórum. Amen.
+  en: |
+    V. Thou art worthy of praise, thou art worthy of hymns, to Thee be glory: to God the Father and the Son with the Holy Ghost, world without end. Amen.
+status:
+  la: verified
+  en: verified

src/data/propers/common/vespers-preces-feriales.yml

@@ -15,6 +15,11 @@
 # `textRef: lauds-conclusio` on a ferial or vigil day -- see hours/
 # vespers.ts's 'vespers-preces' case for the exact predicate, mirroring
 # hours/lauds.ts's 'lauds-preces' case exactly.
+#
+# Psalm 50 (Miserere), which the live render embeds between the first and
+# second V/R blocks with its own Gloria Patri, is deliberately dropped here
+# per direct instruction (2026-08) -- not a transcription gap, same as
+# lauds-preces-feriales.yml's own Psalm 129 drop.
 id: vespers-preces-feriales
 text:
   la: |
@@ -51,30 +56,6 @@ text:
     V. Dómine, exáudi oratiónem meam.
     R. Et clamor meus ad te véniat.
 
-    Psalmus 50.
-    Miserére mei, Deus, secúndum magnam misericórdiam tuam.
-    Et secúndum multitúdinem miseratiónum tuárum, dele iniquitátem meam.
-    Ámplius lava me ab iniquitáte mea: et a peccáto meo munda me.
-    Quóniam iniquitátem meam ego cognósco: et peccátum meum contra me est semper.
-    Tibi soli peccávi, et malum coram te feci: ut justificéris in sermónibus tuis, et vincas cum judicáris.
-    Ecce enim, in iniquitátibus concéptus sum: et in peccátis concépit me mater mea.
-    Ecce enim, veritátem dilexísti: incérta et occúlta sapiéntiæ tuæ manifestásti mihi.
-    Aspérges me hyssópo, et mundábor: lavábis me, et super nivem dealbábor.
-    Audítui meo dabis gáudium et lætítiam: et exsultábunt ossa humiliáta.
-    Avérte fáciem tuam a peccátis meis: et omnes iniquitátes meas dele.
-    Cor mundum crea in me, Deus: et spíritum rectum ínnova in viscéribus meis.
-    Ne proícias me a fácie tua: et spíritum sanctum tuum ne áuferas a me.
-    Redde mihi lætítiam salutáris tui: et spíritu principáli confírma me.
-    Docébo iníquos vias tuas: et ímpii ad te converténtur.
-    Líbera me de sanguínibus, Deus, Deus salútis meæ: et exsultábit lingua mea justítiam tuam.
-    Dómine, lábia mea apéries: et os meum annuntiábit laudem tuam.
-    Quóniam si voluísses sacrifícium, dedíssem útique: holocáustis non delectáberis.
-    Sacrifícium Deo spíritus contribulátus: cor contrítum, et humiliátum, Deus, non despícies.
-    Benígne fac, Dómine, in bona voluntáte tua Sion: ut ædificéntur muri Jerúsalem.
-    Tunc acceptábis sacrifícium justítiæ, oblatiónes, et holocáusta: tunc impónent super altáre tuum vítulos.
-    V. Glória Patri, et Fílio, et Spirítui Sancto.
-    R. Sicut erat in princípio, et nunc, et semper, et in sǽcula sæculórum. Amen.
-
     V. Dómine, Deus virtútum, convérte nos.
     R. Et osténde fáciem tuam, et salvi érimus.
     V. Exsúrge, Christe, ádjuva nos.
@@ -115,30 +96,6 @@ text:
     V. O Lord, hear my prayer.
     R. And let my cry come unto thee.
 
-    Psalm 50.
-    Have mercy on me, O God, according to thy great mercy.
-    And according to the multitude of thy tender mercies blot out my iniquity.
-    Wash me yet more from my iniquity, and cleanse me from my sin.
-    For I know my iniquity, and my sin is always before me.
-    To thee only have I sinned, and have done evil before thee: that thou mayst be justified in thy words, and mayst overcome when thou art judged.
-    For behold I was conceived in iniquities; and in sins did my mother conceive me.
-    For behold thou hast loved truth: the uncertain and hidden things of thy wisdom thou hast made manifest to me.
-    Thou shalt sprinkle me with hyssop, and I shall be cleansed: thou shalt wash me, and I shall be made whiter than snow.
-    To my hearing thou shalt give joy and gladness: and the bones that have been humbled shall rejoice.
-    Turn away thy face from my sins, and blot out all my iniquities.
-    Create a clean heart in me, O God: and renew a right spirit within my bowels.
-    Cast me not away from thy face; and take not thy holy spirit from me.
-    Restore unto me the joy of thy salvation, and strengthen me with a perfect spirit.
-    I will teach the unjust thy ways: and the wicked shall be converted to thee.
-    Deliver me from blood, O God, thou God of my salvation: and my tongue shall extol thy justice.
-    O Lord, thou wilt open my lips: and my mouth shall declare thy praise.
-    For if thou hadst desired sacrifice, I would indeed have given it: with burnt offerings thou wilt not be delighted.
-    A sacrifice to God is an afflicted spirit: a contrite and humbled heart, O God, thou wilt not despise.
-    Deal favourably, O Lord, in thy good will with Sion; that the walls of Jerusalem may be built up.
-    Then shalt thou accept the sacrifice of justice, oblations and whole burnt offerings: then shall they lay calves upon thy altar.
-    V. Glory be to the Father, and to the Son, and to the Holy Ghost.
-    R. As it was in the beginning, is now, and ever shall be, world without end. Amen.
-
     V. Turn us again, O Lord, God of Hosts.
     R. Show us thy face, and we shall be whole.
     V. Arise, O Christ, and help us.

src/hours/matins.ts

@@ -491,6 +491,7 @@ export function resolveOrdo(date: string): ResolvedOrdo {
     parts.push(...sundayCanticleNocturn(sundayAntiphons.nocturn3, day));
     parts.push(...(nocturn3Readings ?? []));
     parts.push({ kind: 'te-deum', text: resolveCommon('te-deum') });
+    parts.push({ kind: 'versicle', text: resolveCommon('te-decet-laus') });
   } else if (threeNocturns) {
     // A Duplex+ weekday feast — genuinely different psalmody from a real
     // Sunday's, not the same content reused. getMatinsPsalmodyOverride
@@ -523,6 +524,7 @@ export function resolveOrdo(date: string): ResolvedOrdo {
       parts.push(...(nocturn3Readings ?? []));
     }
     parts.push({ kind: 'te-deum', text: resolveCommon('te-deum') });
+    parts.push({ kind: 'versicle', text: resolveCommon('te-decet-laus') });
   } else {
     parts.push(...ferialAntiphonedNocturn(day));
     parts.push(...(nocturn1Readings ?? []));

tests/hours/lauds.test.ts

@@ -166,11 +166,15 @@ describe('resolveOrdo("lauds", ...)', () => {
     expect(collectIndex).toBeGreaterThan(litanyIndex);
   });
 
-  it('uses the fuller Tridentine 1906/1910 ferial Preces (with Psalm 129) on a plain ferial day, not the short Sunday/feast litany', () => {
+  it('uses the fuller Tridentine 1906/1910 ferial Preces on a plain ferial day, not the short Sunday/feast litany', () => {
+    // Psalm 129 (De profundis), present in the live render, is deliberately
+    // dropped from this app's own text (2026-08) — 'Ego dixi' is the next
+    // versicle after where the psalm used to sit, still unique to the
+    // fuller ferial form vs. the short litany.
     const ordo = resolveOrdo('lauds', FERIAL_TUESDAY);
     const preces = ordo.parts.find((p) => p.kind === 'preces' && p.text.text.la?.includes('Kýrie, eléison'));
-    expect(preces?.kind === 'preces' ? preces.text.text.la : undefined).toContain('De profúndis clamávi');
+    expect(preces?.kind === 'preces' ? preces.text.text.la : undefined).toContain('Ego dixi: Dómine, miserére mei');
-    expect(preces?.kind === 'preces' ? preces.text.text.en : undefined).toContain('Out of the depths');
+    expect(preces?.kind === 'preces' ? preces.text.text.en : undefined).toContain('I said: Lord, be merciful');
   });
 
   it('uses the short Sunday/feast litany, without Psalm 129, on a Sunday and on a real saint\'s own winning day', () => {
@@ -186,7 +190,7 @@ describe('resolveOrdo("lauds", ...)', () => {
   it('still uses the fuller ferial Preces on a Vigil, even though a Vigil is a sanctoral winner (unlike isSundayOrFeast elsewhere)', () => {
     const ordo = resolveOrdo('lauds', '2028-08-09'); // Vigil of St. Lawrence wins outright this year (not a Sunday)
     const preces = ordo.parts.find((p) => p.kind === 'preces' && p.text.text.la?.includes('Kýrie, eléison'));
-    expect(preces?.kind === 'preces' ? preces.text.text.la : undefined).toContain('Psalmus 129');
+    expect(preces?.kind === 'preces' ? preces.text.text.la : undefined).toContain('Ego dixi: Dómine, miserére mei');
   });
 
   it('resolves just the winners own collect on a plain day with nothing commemorated', () => {

tests/hours/matins.test.ts

@@ -41,6 +41,9 @@ describe('resolveOrdo("matins", ...) ferial (1-nocturn) branch', () => {
     expect(psalms).toEqual([3, 94, 43, 44, 47, 48, 49, 54, 55, 58, 59]);
     expect(ordo.parts.some((p) => p.kind === 'te-deum')).toBe(false);
     expect(ordo.parts.some((p) => p.kind === 'canticle')).toBe(false);
+    // "Te decet laus" is sung only right after the Te Deum on a 3-nocturn
+    // day (2026-08) — absent here along with the Te Deum itself.
+    expect(ordo.parts.some((p) => p.kind === 'versicle' && p.text.text.la?.includes('Te decet laus'))).toBe(false);
   });
 
   it("gives every nocturn psalm its own antiphon and includes Tuesday's own versicle (data/hours/matins-ferial-antiphons.yml)", () => {
@@ -125,12 +128,15 @@ describe('resolveOrdo("matins", ...) Sunday (3-nocturn) branch', () => {
 
   it('renders each nocturn versicle with both its V. and R. lines (real bug: sundayPsalmNocturn/sundayCanticleNocturn used to drop the R. line entirely)', () => {
     const versicles = ordo.parts.filter((p) => p.kind === 'versicle') as { text: { text: Record<string, string> } }[];
-    // Opening Deus-in-adjutorium versicle + one per nocturn (1, 2, 3).
+    // Opening Deus-in-adjutorium versicle + one per nocturn (1, 2, 3) +
-    expect(versicles).toHaveLength(4);
+    // the closing "Te decet laus" versicle after the Te Deum (2026-08).
+    expect(versicles).toHaveLength(5);
     const [, nocturn1, nocturn2, nocturn3] = versicles;
     expect(nocturn1?.text.text.la).toBe('V. Memor fui nocte nóminis tui Dómine.\nR. Et custodívi legem tuam.');
     expect(nocturn2?.text.text.la).toBe('V. Média nocte surgébam ad confiténdum tibi.\nR. Super justítia justificatiónis tuæ.');
     expect(nocturn3?.text.text.la).toBe('V. Exaltáre Dómine in virtúte tua.\nR. Cantábimus et psallémus virtútes tuas.');
+    // The 5th versicle is "Te decet laus", right after the Te Deum (2026-08).
+    expect(versicles[4]?.text.text.la).toContain('Te decet laus');
   });
 
   it("resolves the user's own bible-plan reading (Tobit/Sirach) for Nocturn 1", () => {

tests/hours/vespers.test.ts

@@ -229,11 +229,15 @@ describe('resolveOrdo("vespers", ...)', () => {
     expect(collectIndex).toBeGreaterThan(litanyIndex);
   });
 
-  it('uses the fuller Tridentine 1906/1910 ferial Preces (with Psalm 50) on a plain ferial day, not the short Sunday/feast litany', () => {
+  it('uses the fuller Tridentine 1906/1910 ferial Preces on a plain ferial day, not the short Sunday/feast litany', () => {
+    // Psalm 50 (Miserere), present in the live render, is deliberately
+    // dropped from this app's own text (2026-08) — 'Ego dixi' is the next
+    // versicle after where the psalm used to sit, still unique to the
+    // fuller ferial form vs. the short litany.
     const ordo = resolveOrdo('vespers', '2026-06-16');
     const preces = ordo.parts.find((p) => p.kind === 'preces' && p.text.text.la?.includes('Kýrie, eléison'));
-    expect(preces?.kind === 'preces' ? preces.text.text.la : undefined).toContain('Miserére mei, Deus');
+    expect(preces?.kind === 'preces' ? preces.text.text.la : undefined).toContain('Ego dixi: Dómine, miserére mei');
-    expect(preces?.kind === 'preces' ? preces.text.text.en : undefined).toContain('Have mercy on me, O God');
+    expect(preces?.kind === 'preces' ? preces.text.text.en : undefined).toContain('I said: Lord, be merciful');
   });
 
   it("uses the short Sunday/feast litany, without Psalm 50, on a Sunday and on a real saint's own winning day", () => {