Extend closing Gloria Patri to canticles, centralize instead of baking it in

Benedictus, Magnificat, and Nunc Dimittis had the Gloria Patri baked
verbatim into their propers YAML with no Triduum suppression; Matins'
Nocturn 3 OT canticles had none at all. Give the 'canticle' ResolvedPart
the same centrally-attached gloriaPatri field psalms already got, strip
the baked-in text, and drop Lauds' now-redundant local append/Triduum
check — live-verified that canticles follow the exact same Triduum-only
omission as psalms (e.g. Benedictus at Lauds of Holy Thursday).

src/data/propers/common/magnificat.yml

@@ -4,7 +4,9 @@
 # year-round, same shape as benedictus.yml/nunc-dimittis.yml — the framing
 # antiphon is resolved separately, by day (see hours/resolve-common.ts's
 # getMagnificatAntiphon), not stored here. Not live-query-verified (see
-# TODO.md) — read directly from source.
+# TODO.md) — read directly from source. The closing Gloria Patri isn't
+# stored here either — it's attached centrally (hours/index.ts) so it can
+# be omitted during the Sacred Triduum, same as every other canticle/psalm.
 id: magnificat
 text:
   la: |
@@ -18,8 +20,6 @@ text:
     Esuriéntes implévit bonis: * et dívites dimísit inánes.
     Suscépit Israël púerum suum: * recordátus misericórdiæ suæ.
     Sicut locútus est ad patres nostros: * Ábraham, et sémini ejus in sǽcula.
-    V. Glória Patri, et Fílio, * et Spirítui Sancto.
-    R. Sicut erat in princípio, et nunc, et semper, * et in sǽcula sæculórum. Amen.
   en: |
     My soul ✠ doth magnify the Lord.
     And my spirit hath rejoiced * in God my Saviour.
@@ -31,8 +31,6 @@ text:
     He hath filled the hungry with good things; * and the rich he hath sent empty away.
     He hath received Israel his servant, * being mindful of his mercy:
     As he spoke to our fathers, * to Abraham and to his seed for ever.
-    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.
 status:
   la: verified
   en: verified