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/purification-commemoration.yml

@@ -0,0 +1,28 @@
+# Own proper antiphon (purification-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 (purification-collect.yml), unchanged.
+id: purification-commemoration
+text:
+  la: |
+    Ant. Senex * Púerum portábat, Puer autem senem regébat: quem virgo péperit, et post partum virgo permánsit: ipsum quem génuit, adorávit.
+    V. Ora pro nobis sancta Dei Génitrix.
+    R. Ut digni efficiámur promissiónibus Christi.
+    Orémus.
+    Omnípotens sempitérne Deus, majestátem tuam súpplices exorámus: ut, sicut unigénitus
+    Fílius tuus hodiérna die cum nostræ carnis substántia in templo est præsentátus; ita nos
+    fácias purificátis tibi méntibus præsentári.
+    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. The old man held his Lord * in his arms in the form of a little child, but the Child was the old man's King even that Child whom a virgin bore, and remained a virgin as before the fruit of her womb, and the God of her soul.
+    V. Pray for us, holy Mother of God.
+    R. That we may be made worthy of the promises of Christ.
+    Let us pray.
+    Almighty and everliving God, we humbly beseech thy Majesty, that as thy Only-begotten
+    Son was this day presented in the temple in substance of our flesh, so we may be
+    presented unto thee with pure and clean hearts.
+    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