hours: use the Marian Sabbato hymn as Saturday's own Lauds default

By explicit choice, not the honest-missing placeholder from before: a
genuinely per-annum, unprivileged Saturday isn't achievable (every one
is either Marian-Sabbato-overridden or in a privileged season with its
own swapped hymn), so Sanctae Mariae Sabbato's own hymn ("O gloriosa
Domina") becomes Saturday's default rather than leaving a gap.

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

src/data/propers/common/lauds-hymn-saturday.yml

@@ -1,12 +1,52 @@
-# Verified against Divinum Officium (Monastic Tridentinum 1617), Lauds live query.
-# Every ordinary-time Saturday is either Marian-Sabbato-overridden or
-# falls in a privileged season (Lenten/Advent Ember Saturday) whose hymn is
-# itself swapped for the season's own -- there's no achievable date that
-# shows a genuinely per-annum, unprivileged Saturday Lauds hymn. Left
-# missing rather than presenting a season-specific hymn as if it were the
-# plain weekday default.
+# Verified against Divinum Officium (Monastic Tridentinum 1617), Lauds live
+# query, Sanctæ Mariæ Sabbato (2026-09-05). By explicit choice, this --
+# not a genuinely per-annum unprivileged Saturday, which isn't achievable
+# (see hours/types.ts's 'lauds-psalmody' doc comment on the Marian
+# Saturday) -- is Saturday's own default hymn.
 id: lauds-hymn-saturday
-text: {}
+text:
+  la: |
+    O gloriósa Dómina,
+    Excélsa super sídera:
+    Qui te creávit, próvide
+    Lactásti sacro úbere.
+
+    Quod Heva tristis ábstulit,
+    Tu reddis almo gérmine:
+    Intrent ut astra flébiles,
+    Cæli fenéstra facta es.
+
+    Tu Regis alti jánua,
+    Et porta lucis fúlgida:
+    Vitam datam per Vírginem,
+    Gentes redémptæ, pláudite.
+
+    Glória tibi Dómine,
+    Qui natus es de Vírgine,
+    Cum Patre et Sancto Spíritu,
+    In sempitérna sǽcula.
+    Amen.
+  en: |
+    O glorious lady! throned on high
+    Above the star-illumined sky;
+    Thereto ordained, thy bosom lent
+    To thy Creator nourishment.
+
+    Through thy sweet offspring we receive
+    The bliss once lost through hapless Eve;
+    And heaven to mortals open lies
+    Now thou art portal of the skies.
+
+    Thou art the door of heaven's high King,
+    Light's gateway fair and glistering;
+    Life through a Virgin is restored;
+    Ye ransomed nations, praise the Lord!
+
+    All honour, laud, and glory be,
+    O Jesu, Virgin-born, to thee;
+    All glory, as is ever meet,
+    To Father and to Paraclete.
+    Amen.
 status:
-  la: missing
-  en: missing
+  la: verified
+  en: verified

tests/hours/lauds.test.ts

@@ -105,10 +105,11 @@ describe('resolveOrdo("lauds", ...)', () => {
     expect(hymn?.kind === 'hymn' ? hymn.text.text.la : undefined).toContain('Ales diéi núntius');
   });
 
-  it("marks Saturday's hymn honestly missing rather than presenting a privileged season's swapped hymn as the default", () => {
+  it("uses the Marian Sabbato hymn as Saturday's own default (explicit choice, since a genuinely unprivileged Saturday isn't achievable)", () => {
     const ordo = resolveOrdo('lauds', '2026-06-20');
     const hymn = ordo.parts.find((p) => p.kind === 'hymn');
-    expect(hymn?.kind === 'hymn' ? hymn.text.status.la : undefined).toBe('missing');
+    expect(hymn?.kind === 'hymn' ? hymn.text.status.la : undefined).toBe('verified');
+    expect(hymn?.kind === 'hymn' ? hymn.text.text.la : undefined).toContain('O gloriósa Dómina');
   });
 
   it('resolves the Benedictus as a canticle with an opening antiphon and a full repeat, same shape as Compline\'s Nunc Dimittis', () => {