Author common-of-a-confessor Lauds/Vespers bundle (= Confessor-Not-Bishop content)

Fixed a real audit-methodology bug first: the bulk gap-audit was sampling
each saint's own date via prayVespera, which reflects whatever saint
claims First Vespers that evening (often a neighboring day's), not the
sampled saint's own category. Redid it via prayLaudes (no anticipation).

That surfaced the real finding: common-of-a-confessor (37 saints, this
app's largest remaining gap) isn't a distinct liturgical Common -- it's
common-of-a-confessor-not-bishop under a different label. St. Joseph's
and St. Thomas Aquinas's chapter is byte-identical to the already-
authored Sir 31:8-9 text, and several of the 37 saints' own file comments
already say "vide C5" (Confessor Not a Bishop) directly. Not relabeled
across the 37 saint files, since matins-hymn-common-of-a-confessor.yml
and benedictus-antiphon-common-of-a-confessor.yml already establish this
plain id as the real, working one for those saints' Matins/Benedictus
content -- duplicated the Lauds/Vespers bundle under this id too, to
match that existing convention.

Updates two existing tests whose dates collided with this fix: the
FERIAL_MONDAY constant (moved off St. Raymond Nonnatus's own day) and a
new Vespers proof on St. Joseph's First Vespers.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014axryJBrRswYh2niA7WCUc

src/data/propers/common/lauds-versicle-common-of-a-confessor.yml

@@ -0,0 +1,12 @@
+# Verified against Divinum Officium (Monastic Tridentinum 1617), Lauds
+# live query -- St. Louis's own day (2026-08-25) and St. Nicholas of
+# Tolentino's own day (2026-09-10, `propers: null`) cross-checked
+# byte-identical -- see lauds-capitulum-common-of-a-confessor-not-
+# bishop.yml's header for the fuller note on this bundle's gap.
+id: lauds-versicle-common-of-a-confessor
+text:
+  la: "V. Justum dedúxit Dóminus per vias rectas.\nR. Et osténdit illi regnum Dei."
+  en: "V. The Lord guided the just in right paths.\nR. And showed him the kingdom of God."
+status:
+  la: verified
+  en: verified