propers: add August's collect and antiphon text

11 collects, 4 antiphons -- including backfilling the three pre-existing
August entries (Lawrence, Assumption, Augustine) now that the pulling
methodology exists. Also updates three pre-existing tests whose dates
collided with this month's new real content: the vigil-of-St.-Lawrence
backward-transfer case now runs into a real feast at its landing day
instead of an empty one (confirmed correct against the live reference
engine, including the surviving commemoration on the impeded Sunday
itself), and two other tests moved off Aug 9/10 to dates unaffected by
the new data.

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

tests/hours/resolve-common.test.ts

@@ -18,7 +18,7 @@ describe('getDayCollect', () => {
   });
 
   it('resolves as honestly missing for a saint with no authored propers yet', () => {
-    const day = resolveDay('2026-08-10'); // St. Lawrence wins outright, propers: null
+    const day = resolveDay('2026-08-07'); // St. Donatus wins outright, propers: null
     expect(day.winner.kind).toBe('sanctoral');
     const collect = getDayCollect(day);
     expect(collect.status.la).toBe('missing');