fix(v032): NoteRepository.create now param + time-dep test flake fix

- create(input, now?: Date) signature 추가 (기존 setStatus/updateRawText 패턴 정합)
- NoteRevisions.test.ts 4 testcase v1 capture 시간 명시 주입 (2026-05-09T00:00:00Z)
- upsertFromSync.test.ts 2 testcase v1 capture 시간 명시 주입
- 시스템 시계가 2026-05-10T00:00:00Z 초과 시 DESC ordering 깨지던 회귀 회복

backlog: time-dependent flake (Cut F audit 발견)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

tests/unit/NoteRepository.upsertFromSync.test.ts

@@ -52,7 +52,7 @@ describe('NoteRepository.upsertFromSync', () => {
   });
 
   it('id 있음 + raw_text 동일 + source 더 최신 → metadata 갱신 (status=updated)', () => {
-    const created = repo.create({ rawText: 'sync 본문' });
+    const created = repo.create({ rawText: 'sync 본문' }, new Date('2026-05-09T00:00:00Z'));
     repo.updateAiResult(created.id, { title: '옛 제목', summary: '옛 요약', tags: ['old'], provider: 'p' });
     db.prepare(`UPDATE notes SET updated_at=? WHERE id=?`).run('2026-05-08T00:00:00Z', created.id);
     const r = repo.upsertFromSync({ ...baseInput, id: created.id });
@@ -75,7 +75,7 @@ describe('NoteRepository.upsertFromSync', () => {
   });
 
   it('id 있음 + raw_text 다름 + source 더 최신 → updateRawText (status=updated) + new user revision', () => {
-    const created = repo.create({ rawText: 'old text' });
+    const created = repo.create({ rawText: 'old text' }, new Date('2026-05-09T00:00:00Z'));
     db.prepare(`UPDATE notes SET updated_at=? WHERE id=?`).run('2026-05-08T00:00:00Z', created.id);
     const r = repo.upsertFromSync({ ...baseInput, id: created.id, rawText: 'new sync text' });
     expect(r.status).toBe('updated');