propers: add January's collect and antiphon text

Real collect text for the 9 January saints that have one, plus a real
antiphon for the 3 that have one of their own (as opposed to falling back
to a generic Common-of-Saints text) — read directly from the reference
engine's fully-rendered output, not reconstructed from the raw source
files' own shorthand endings ($Per Dominum, $Qui vivis, etc.).

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

tests/calendar/january-sanctoral.test.ts

@@ -0,0 +1,58 @@
+import { describe, expect, it } from 'vitest';
+import { resolveDay } from '../../src/calendar';
+import { getDayCollect } from '../../src/hours/resolve-common';
+
+// 2029 — every January date below is a clean per-annum year for these
+// saints (no Sunday collision), verified against Divinum Officium
+// (Monastic Tridentinum 1617) — see data/calendar/saints/*.yml for the
+// per-saint source detail.
+describe('January sanctoral pull (first pass)', () => {
+  it('a saint with real authored propers wins outright and resolves a verified collect', () => {
+    const day = resolveDay('2029-01-16');
+    expect(day.winner).toEqual({
+      kind: 'sanctoral',
+      id: 'st-marcellus-i',
+      name: 'St. Marcellus I, Pope and Martyr',
+      rank: 'semiduplex',
+    });
+    const collect = getDayCollect(day);
+    expect(collect.status.en).toBe('verified');
+    expect(collect.text.en).toContain('Marcellus');
+  });
+
+  it('a saint with no unique propers (Common of Saints only) still wins outright, honestly missing a collect', () => {
+    const day = resolveDay('2026-01-17'); // St. Anthony Abbot
+    expect(day.winner).toEqual({
+      kind: 'sanctoral',
+      id: 'st-anthony-abbot',
+      name: 'St. Anthony, Abbot',
+      rank: 'duplex',
+    });
+    const collect = getDayCollect(day);
+    expect(collect.status.en).toBe('missing');
+  });
+
+  it('resolves a real multi-saint day as a winner plus a commemoration, not a collision error', () => {
+    const day = resolveDay('2029-01-18'); // Chair of St. Peter at Rome + St. Prisca
+    expect(day.winner).toEqual({
+      kind: 'sanctoral',
+      id: 'chair-of-st-peter-at-rome',
+      name: 'The Chair of St. Peter at Rome',
+      rank: 'duplex-majus',
+    });
+    expect(day.commemorations).toEqual([
+      { kind: 'sanctoral', id: 'st-prisca', name: 'St. Prisca, Virgin and Martyr', rank: 'simplex' },
+    ]);
+  });
+
+  it('a simplex saint on an ordinary Sunday is commemorated, not dropped or made to win', () => {
+    // Jan 14, 2029 is the Second Sunday after Epiphany (ordinary, not
+    // privileged) — St. Felix (simplex) is commemorated per the ordinary-
+    // Sunday rule, matching the historical calendar exactly.
+    const day = resolveDay('2029-01-14');
+    expect(day.winner).toEqual({ kind: 'temporal', id: 'post-epiphany-2' });
+    expect(day.commemorations).toEqual([
+      { kind: 'sanctoral', id: 'st-felix-presbyter', name: 'St. Felix, Priest and Martyr', rank: 'simplex' },
+    ]);
+  });
+});