Author missing Matins Gospel pericopes across nocturn-readings store

~110 of 355 nocturn-readings files had a patristic homily with no
paired Gospel-pericope text -- the homily discussing a Gospel that was
never itself transcribed into the file. Closed in two waves (the first
pass's source-string regex missed many real cases where the citation
lived only in a header comment or wasn't named at all), each entry
sourced from divinum-officium-reference's own Missale files (following
Sancti/Commune redirects where a feast reuses another's Gospel) and
verified per file rather than assumed -- several candidates turned out
to be genuine Nocturn 2 content or Common-of-saints cross-references
with no proper Gospel of their own, correctly left untouched.

Includes both live-reported gaps: St. Joseph of Cupertino's own Bk. II
Homily 38 (Matt 22:1-14) and the Vigil of St. Matthew's Ambrose homily
(Luke 5:27-32).

TODO.md logs the closed item plus a new, distinct follow-up: a handful
of files with no Nocturn 3 content authored at all (not just an
unpaired Gospel), found along the way.

npm test (2029 passed) and tsc --noEmit both pass.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MKC2QQGLYo2UTiDjDyWEkW

src/data/propers/nocturn-readings/nativity-bvm.yml

@@ -7,6 +7,17 @@
 # Lectio4-6 combined into one reading, one continuous excerpt of St.
 # Augustine's sermon. No responsory given in the source for these
 # lessons.
+#
+# Checked 2026-09-05 for a Gospel pairing: this reading (Augustine's
+# Sermon 18, Lectio4-6) is Nocturn 2, not Nocturn 3 -- it is a
+# panegyric on Mary's nativity generally, not an exegesis of a Gospel
+# pericope, so no isGospel pairing applies to it. Note for a future
+# pass: the source file (horas/Latin/Sancti/09-08.txt) does carry its
+# own genuine Nocturn 3 (Lectio7-9: Gospel Matt 1:1-16, the genealogy,
+# with St. Jerome's Commentary on Matthew Bk. 1 as the homily) that is
+# not authored anywhere in this store at all -- a real content gap,
+# but a new reading pair rather than a missing Gospel citation on an
+# existing homily, so out of scope for this pass.
 id: nativity-bvm
 readings:
   - nocturn: 2