Give every day of Passiontide its own real propers and label

Passion Sunday through Holy Saturday (14 days) all collapsed onto just
two ids (passion-sunday/palm-sunday) via resolveTemporalId's coarse
governing-Sunday bucketing, so the day-label header showed the same
generic "Weekday in Passiontide" phrase for all 14, and Maundy
Thursday/Good Friday/Holy Saturday silently rendered Palm Sunday's own
collect and antiphons.

Fixed via the same movable-feast override architecture already used for
Corpus Christi/Ascension (calendar/movable-feasts.ts's anchor-based
override), leaving resolveTemporalId itself untouched: each of the 12
non-Sunday days gets its own real winner id, its own authored
collect/Benedictus/Magnificat content, and its own temporal-feasts
display record, closing both the label bug and the underlying content
gap in one mechanism. day-label.ts's temporalLabel and
collectCommemorations also now recognize any named temporal identity
(not just Ember days), so a saint winning outright on one of these days
still surfaces the day's own real name as a commemoration.

A broader audit of every ALWAYS_OVERRIDE_TEMPORAL_IDS entry found the
same class of gap elsewhere: Corpus Christi and Sacred Heart were
completely unauthored across collect/Benedictus/Magnificat/Matins
reading, and Ascension/Trinity Sunday/Christ the King were missing
pieces too. All authored now, live-verified against the reference
engine. Added a general fallback in resolve-common.ts (missing
day-specific content degrades to the coarse Sunday's own instead of
rendering blank) so this class of gap degrades gracefully if it recurs.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Lu3sgMFpwud3CerW9r6LYc

tests/calendar/transfer.test.ts

@@ -128,8 +128,16 @@ describe('the Easter-octave backlog (Palm Sunday through Low Sunday)', () => {
     // St. George, Semiduplex; St. Fidelis of Sigmaringen, Duplex) is
     // below duplex-majus.
     const holyMonday = resolveDay('2033-04-11');
-    expect(holyMonday.winner).toEqual({ kind: 'temporal', id: 'palm-sunday' });
-    expect(holyMonday.commemorations).toEqual([]);
+    // Monday of Holy Week now has its own real winner id (see
+    // calendar/movable-feasts.ts's Passiontide-day override, 2026-09-06)
+    // rather than inheriting Palm Sunday's own coarse id — the override
+    // mechanism pushes a `{kind:'temporal', id:'palm-sunday'}`
+    // commemoration for the coarse id it replaces, same shape every other
+    // movable feast (Ascension, Corpus Christi) already does; harmless,
+    // since day-label.ts's collectCommemorations deliberately drops any
+    // commemoration whose id equals the plain governing weekday.
+    expect(holyMonday.winner).toEqual({ kind: 'temporal', id: 'monday-holy-week' });
+    expect(holyMonday.commemorations).toEqual([{ kind: 'temporal', id: 'palm-sunday' }]);
     expect(holyMonday.transferredAway?.candidate.id).toBe('st-leo-i');
 
     for (const afterLowSunday of ['2033-04-25', '2033-04-26', '2033-04-27', '2033-04-28', '2033-04-29']) {