최신 알림 존재 여부 및 읽기 기능 구현 #390

All 487 tests pass, 1 skipped in 39s

488 tests +1 487 ✔️ +1 39s ⏱️ +10s
156 suites ±0     1 💤 ±0
156 files ±0     0 ❌ ±0

Results for commit 933b1e8. ± Comparison against earlier commit 8421e31.