Add May sanctoral content: 10 saints plus the Queenship of the BVM

Continues the full-year sanctoral import (see TODO.md/memory for Jan-Apr):
St. Pius V, St. Antoninus, St. Robert Bellarmine, St. John Baptist de la
Salle, St. Paschal Baylon, St. Venantius, St. Bernardine of Siena, St. John
Baptist de Rossi, St. Augustine of Canterbury, St. Mary Magdalene de Pazzi,
and the Queenship of the BVM (May 31, Duplex II Classis, instituted by Pius
XII's 1954 "Ad cæli Reginam" — full proper content, not a Common fallback).

Adding the Queenship to May 31 surfaces a real collision with Trinity
Sunday in years where Trinity falls on May 31 (2026): since this app
models Trinitytide Sundays as plain ordinary-sunday with no special
first-class standing, a Duplex+ sanctoral feast wins outright there per
the existing precedence rule. Updated the two tests pinned to that date
accordingly, with a third moved to a Trinity Sunday date (2023-06-04)
free of any sanctoral entry to keep testing the octave-vs-anchor-day
interaction in isolation.

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

tests/calendar/day-label.test.ts

@@ -11,13 +11,16 @@ describe('getDayLabel — ordinal temporal label', () => {
   });
 
   it('names the anchor day itself, not "day after itself"', () => {
-    // Trinity Sunday no longer carries a sanctoral commemoration of its
-    // own (St. Felix I, May 30, is now commemorated in place on his own
-    // day within Pentecost's octave instead of transferring here — see
-    // calendar/octaves.ts and tests/calendar/transfer.test.ts), so this
-    // is back to a plain temporal label; the "feast — temporal" combined
-    // form is covered separately below with synthetic data.
-    expect(getDayLabel(resolveDay('2026-05-31'))).toBe('Trinity Sunday');
+    // Trinity Sunday 2026 (May 31) is now also the Queenship of the
+    // Blessed Virgin Mary's own fixed day (Duplex II Classis, added per
+    // the full-year sanctoral import) — since this app models Trinitytide
+    // Sundays as plain `ordinary-sunday` with no special first-class
+    // standing of their own, the Duplex+ sanctoral feast wins outright
+    // here per the normal ordinary-Sunday rule (see
+    // tests/calendar/transfer.test.ts's own May 31 case for the full
+    // winner/commemorations breakdown), so the label now reflects her,
+    // not Trinity Sunday itself.
+    expect(getDayLabel(resolveDay('2026-05-31'))).toBe('The Queenship of the Blessed Virgin Mary');
     expect(getDayLabel(resolveDay('2026-04-05'))).toBe('Easter');
     expect(getDayLabel(resolveDay('2026-02-18'))).toBe('Ash Wednesday');
   });
@@ -40,7 +43,11 @@ describe('getDayLabel — ordinal temporal label', () => {
   });
 
   it('falls back to weekday + season name for seasons with no ordinal convention modeled', () => {
-    expect(getDayLabel(resolveDay('2026-05-15'))).toContain('in Ascensiontide');
+    // 2026-05-15 is now St. John Baptist de la Salle's own fixed day
+    // (Duplex, added per the full-year sanctoral import) -- moved to
+    // May 21, still within Ascensiontide 2026 (May 14-23) and still
+    // free of any sanctoral entry.
+    expect(getDayLabel(resolveDay('2026-05-21'))).toContain('in Ascensiontide');
   });
 });
 
@@ -99,7 +106,14 @@ describe('getDayLabel — active octave', () => {
   });
 
   it("a season's own named anchor day outranks an active octave, even though Trinity Sunday is technically also day 8 of Pentecost's own octave", () => {
-    expect(getDayLabel(resolveDay('2026-05-31'))).toBe('Trinity Sunday');
+    // Not 2026 (May 31): that year's Trinity Sunday now coincides with the
+    // Queenship of the Blessed Virgin Mary's own fixed day (Duplex II
+    // Classis, added per the full-year sanctoral import), which wins
+    // outright and would muddy this specifically octave-vs-anchor-day
+    // check (see tests/calendar/transfer.test.ts's own May 31 case for
+    // that). 2023's Trinity Sunday (June 4) has no sanctoral entry at all,
+    // isolating the octave interaction cleanly.
+    expect(getDayLabel(resolveDay('2023-06-04'))).toBe('Trinity Sunday');
   });
 
   it("a temporal day with real standing of its own (not ordinary-feria) never shows an octave name at all, even with one active -- live-verified counterexample: the Christmas Octave's own stack (Dec 30) titles itself off the Sunday, never any of the four octaves layered on top of it", () => {

tests/calendar/transfer.test.ts

@@ -77,11 +77,23 @@ describe('transfer mechanism (resolveDay integration)', () => {
       { kind: 'octave', id: 'pentecost-sunday', name: 'Pentecost' },
     ]);
 
-    // Felix doesn't reach Trinity Sunday at all now -- but Trinity Sunday
-    // is day 8 of Pentecost's own 8-day octave (the default length, not
-    // yet independently confirmed to be right for Pentecost specifically),
-    // so Pentecost's own octave commemoration still persists here.
-    expect(sunday.winner).toEqual({ kind: 'temporal', id: 'post-pentecost-01' });
-    expect(sunday.commemorations).toEqual([{ kind: 'octave', id: 'pentecost-sunday', name: 'Pentecost' }]);
+    // Felix doesn't reach Trinity Sunday at all now. Trinity Sunday 2026
+    // (May 31) is also the Queenship of the Blessed Virgin Mary's own
+    // fixed day (Duplex II Classis) -- since this app models Trinitytide
+    // Sundays as plain `ordinary-sunday` (no special first-class standing
+    // of their own, see temporal-categories.yml), a Duplex+ sanctoral
+    // feast wins outright here per the normal ordinary-Sunday rule, with
+    // both the day's own temporal id and Pentecost's octave commemorated
+    // in return.
+    expect(sunday.winner).toEqual({
+      kind: 'sanctoral',
+      id: 'queenship-of-the-bvm',
+      name: 'The Queenship of the Blessed Virgin Mary',
+      rank: 'duplex-2-classis',
+    });
+    expect(sunday.commemorations).toEqual([
+      { kind: 'temporal', id: 'post-pentecost-01' },
+      { kind: 'octave', id: 'pentecost-sunday', name: 'Pentecost' },
+    ]);
   });
 });