Finish the sanctoral commemoration bundle sweep (213/218 saints)

Follow-up to the earlier bulk pass. Sourced the remaining category
templates: BVM feasts (13, reused the already-verified BVM suffrage
versicle plus each feast's own antiphon), angels (4, versicle inferred
from a saint file's own "structural category" note), Confessor-Doctor/
-Pope (7, resolved to C4a/C5a/C4b -- each inheriting its base category's
Ant2/Versum2 unchanged, no new content needed), several confessors and
apostles-plural (2, reusing already-sourced category versicles), and 5
fully-proper feasts (All Saints x2, Finding of the Holy Cross, Most
Precious Blood, Transfiguration, Our Lady of Ransom) given their own
real Ant2/Versum2 straight from their Sancti files.

213 of ~218 real saints now covered. Only the 5 Vigils remain open --
no dedicated Commune template exists for that category in the reference
engine, and FeastClass 'vigil' rarely reaches the commemoration code
path anyway.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ME8QNPdEmHSbSx1r6VmDRG

src/data/propers/common/maternity-of-the-bvm-commemoration.yml

@@ -0,0 +1,29 @@
+# Own proper antiphon (maternity-of-the-bvm-antiphon.yml), paired with the standard BVM commemoration versicle already verified elsewhere in this app (propers/common/lauds-suffrage-bvm.yml -- 'V. Ora pro nobis sancta Dei Genitrix'). Collect is the saint's own real proper (maternity-of-the-bvm-collect.yml), unchanged.
+id: maternity-of-the-bvm-commemoration
+text:
+  la: |
+    Ant. Cum jucunditáte * Maternitátem beátæ Maríæ semper Vírginis celebrémus.
+    V. Ora pro nobis sancta Dei Génitrix.
+    R. Ut digni efficiámur promissiónibus Christi.
+    Orémus.
+    Deus, qui de beátæ Maríæ Vírginis útero Verbum tuum, Angelo nuntiánte,
+    carnem suscípere voluísti: præsta supplícibus tuis: ut qui vere eam
+    Genetrícem Dei crédimus, ejus apud te intercessiónibus adjuvémur.
+    Per eúndem Dóminum nostrum Jesum Christum, Fílium tuum: qui tecum vivit et regnat
+    in unitáte Spíritus Sancti, Deus, per ómnia sǽcula sæculórum.
+    ℟. Amen.
+  en: |
+    Ant. Let us celebrate * with joy the Maternity of blessed Mary ever Virgin.
+    V. Pray for us, holy Mother of God.
+    R. That we may be made worthy of the promises of Christ.
+    Let us pray.
+    O God, who didst will that, at the announcement of an Angel, thy Word
+    should take flesh in the womb of the Blessed Virgin Mary, grant to us
+    thy suppliants, that we who believe her to be truly the Mother of God
+    may be helped by her intercession with thee.
+    Through the same Jesus Christ, thy Son our Lord, Who liveth and reigneth
+    with thee, in the unity of the Holy Ghost, God, world without end.
+    ℟. Amen.
+status:
+  la: verified
+  en: verified