5 callsite (NoteRepository, ftsHelpers, BackupService, ContinuityService,
NoteCard) 모두 canonical export 로 정리. 알고리즘 동일 (9 * 60 * 60 * 1000),
회귀 PASS 검증.
v0.2.6 commit 3cfa60b 가 4 callsite migrate 했지만 5 callsite 잔여.
Cut F audit 에서 발견.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Skips when marker matches today's KST date. Marker written after
successful snapshot, before rotation. lastSnapshotAt() exposed for UI.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Code review I1: wrap snapshot's backup+rename in try/catch, unlink
orphan tmp file on failure so the next run does not encounter a
confusing 'existing file is not a database' error from sqlite.
Code review I2: JSDoc note that snapshot() is not safe for concurrent
calls — callers should serialize via runDaily()'s marker.
New unit test injects a fake db whose backup() rejects after a partial
write, asserts no .tmp / .sqlite remains.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
