Refactor | CAKK-87 | Core 모듈에 Service Layer 이관 #321

All 210 tests pass in 30s

40 files ±0 40 suites ±0 30s ⏱️ ±0s
210 tests ±0 210 ✅ ±0 0 💤 ±0 0 ❌ ±0
211 runs ±0 211 ✅ ±0 0 💤 ±0 0 ❌ ±0

Results for commit b2d862e. ± Comparison against earlier commit 392c379.