propers: Benedictus antiphons for March's sanctoral entries (5/6)

4 authored fresh (Lucius I, Thomas Aquinas, the Forty Holy Martyrs,
Gregory the Great), 1 corrected (Joseph -- confirmed sourced from the
Roman rite's raw [Ant 1] rather than a real Monastic 1617 rendering,
same pattern as January/February's corrections).

Gregory the Great's antiphon (the "non Angli sed Angeli" episode) had
no English in the source at all -- translated fresh, marked draft.

St. Frances of Rome left honestly missing: Simplex rank, and her day
(March 9) falls within Lent in every year tested 2026-2035, so she can
never win outright under this app's own privileged-feria-major rule --
there's no live-rendered antiphon to source, ever, not just this year.

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

src/data/propers/common/st-gregory-the-great-antiphon.yml

@@ -0,0 +1,14 @@
+# Verified against Divinum Officium (Monastic Tridentinum 1617), Lauds
+# live query, St. Gregory the Great's own day (2026-03-12) -- the
+# Benedictus antiphon. The source's own English page didn't render a
+# translation (silently duplicated the Latin); translated here in the
+# same register as the rest of this project's antiphons, so marked
+# `draft` rather than `verified`. Alludes to the well-known "non Angli
+# sed Angeli" episode (Bede, Historia Ecclesiastica II.1).
+id: st-gregory-the-great-antiphon
+text:
+  la: "Gregórius, respíciens Anglórum júvenes, ait: Angélicam habent fáciem, et tales Angelórum in cælis decet esse consórtes."
+  en: "Gregory, beholding the English youths, said: They have an angelic countenance, and it is meet that such should be companions of the Angels in heaven."
+status:
+  la: verified
+  en: draft