Relocate Immaculate Heart of Mary off Aug 22 to Easter+69

Fixed Aug 22 collided outright with the Assumption's own octave-closing
day (both this project's blended calendar tracks are kept deliberately,
so one shouldn't permanently suppress the other). Moved IHM to the
Saturday after the Feast of the Sacred Heart -- its real diocesan date
from 1914 until Pius XII's 1944 fixed-date decree, and also the date the
1969 reform returned to.

Required real new mechanism, not just a data move: a new bespoke
calendar/index.ts override (applyImmaculateHeart, following the existing
applyMarianSaturday/applyChristTheKing precedent), a move from the
sanctoral saints store to the temporal-feasts store (different propers
lookup entirely), and a real bug fix in matins.ts's nocturnReadingIds,
which only ever picked up a *sanctoral* winner's own reading file.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VZSAgRi4QE4XRTqVto93zA

src/data/calendar/saints/immaculate-heart-of-mary.yml

@@ -1,13 +0,0 @@
-# Read directly from the reference engine: untagged/default [Rank]
-# block of `web/www/horas/Latin/Sancti/08-22.txt` -- "Immaculati Cordis
-# Beatæ Mariæ Virginis;;Duplex II classis;;5.1;;ex C11". Own real
-# [Oratio] and own [Ant 1]. Own Nocturn 2-3 content (Nocturn 3 is St.
-# Robert Bellarmine's own homily on the seven words of Christ on the
-# Cross, not a cross-reference). Instituted 1942 by Pius XII (see the
-# feast's own Lectio6, quoted in nocturn-readings, drawn from
-# ecclesiastical documents).
-id: immaculate-heart-of-mary
-name: "The Immaculate Heart of the Blessed Virgin Mary"
-rank: duplex-2-classis
-common: common-of-the-bvm
-propers: "immaculate-heart-of-mary"

src/data/calendar/sanctoral-calendar.yml

@@ -269,7 +269,6 @@ days:
   "08-19": [st-john-eudes]
   "08-20": [st-bernard]
   "08-21": [st-jane-frances-de-chantal]
-  "08-22": [immaculate-heart-of-mary]
   "08-23": [vigil-of-st-bartholomew]
   "08-24": [st-bartholomew]
   "08-25": [st-louis]

src/data/calendar/temporal-feasts/immaculate-heart-of-mary.yml

@@ -0,0 +1,14 @@
+# Relocated off the fixed Aug 22 date (2026-08-22 user decision) -- that
+# date collided outright with the Assumption's own octave-closing day,
+# which this project also deliberately keeps (see saints/assumption.yml).
+# Moved to the Saturday after the Feast of the Sacred Heart (Easter+69,
+# see calendar/index.ts's applyImmaculateHeart) -- the feast's own real
+# diocesan date from 1914 until Pius XII's 1944 fixed-date decree, and
+# also the date Paul VI's 1969 reform returned to, so it has continuity
+# on both sides of the Aug-22 interlude. Rank/name still sourced from
+# `web/www/horas/Latin/Sancti/08-22.txt`'s own [Rank] block, same as
+# before the move -- only the date assignment changed, not the office's
+# own content.
+id: immaculate-heart-of-mary
+name: "The Immaculate Heart of the Blessed Virgin Mary"
+rank: duplex-2-classis

src/data/propers/temporal/immaculate-heart-of-mary-benedictus-antiphon.yml

@@ -1,7 +1,11 @@
 # Read directly from web/www/horas/Latin/Sancti/08-22.txt's own
 # [Ant 1] and its English counterpart -- a real, proper antiphon of
-# this feast, not a Common substitution.
-id: immaculate-heart-of-mary-antiphon
+# this feast, not a Common substitution. Duplicated as both Benedictus
+# and Magnificat antiphon (see the -magnificat- sibling file): the
+# source only carries this single [Ant 1], and the temporal propers
+# store keys the two separately, unlike the sanctoral store's single
+# shared `${propers}-antiphon`.
+id: immaculate-heart-of-mary-benedictus-antiphon
 text:
   la: "Exsultávit cor meum * in Dómino, et exaltátum est cornu meum in Deo meo, quia lætáta sum in salutári tuo."
   en: "My heart hath rejoiced in the Lord, * and my horn is exalted in my God: because I have joyed in thy salvation."

src/data/propers/temporal/immaculate-heart-of-mary-magnificat-antiphon.yml

@@ -0,0 +1,14 @@
+# Read directly from web/www/horas/Latin/Sancti/08-22.txt's own
+# [Ant 1] and its English counterpart -- a real, proper antiphon of
+# this feast, not a Common substitution. Duplicated as both Benedictus
+# and Magnificat antiphon (see the -benedictus- sibling file): the
+# source only carries this single [Ant 1], and the temporal propers
+# store keys the two separately, unlike the sanctoral store's single
+# shared `${propers}-antiphon`.
+id: immaculate-heart-of-mary-magnificat-antiphon
+text:
+  la: "Exsultávit cor meum * in Dómino, et exaltátum est cornu meum in Deo meo, quia lætáta sum in salutári tuo."
+  en: "My heart hath rejoiced in the Lord, * and my horn is exalted in my God: because I have joyed in thy salvation."
+status:
+  la: verified
+  en: verified