refactor: удалены ненужные файлы и исправлены зависимости

- Удален PRE-COMMIT-HOOK.md
- Удален README.md
- Исправлен go.mod: testify и go-sqlmock перемещены в direct dependencies
- Обновлен go.sum

core-service/go.mod

@@ -3,6 +3,7 @@ module erp-mvp/core-service
 go 1.21
 
 require (
+	github.com/DATA-DOG/go-sqlmock v1.5.2
 	github.com/gin-gonic/gin v1.10.1
 	github.com/go-playground/validator/v10 v10.20.0
 	github.com/golang-jwt/jwt/v5 v5.3.0
@@ -10,11 +11,11 @@ require (
 	github.com/joho/godotenv v1.4.0
 	github.com/lib/pq v1.10.9
 	github.com/sirupsen/logrus v1.9.3
+	github.com/stretchr/testify v1.11.1
 	golang.org/x/crypto v0.23.0
 )
 
 require (
-	github.com/DATA-DOG/go-sqlmock v1.5.2 // indirect
 	github.com/bytedance/sonic v1.11.6 // indirect
 	github.com/bytedance/sonic/loader v0.1.1 // indirect
 	github.com/cloudwego/base64x v0.1.4 // indirect
@@ -34,7 +35,6 @@ require (
 	github.com/pelletier/go-toml/v2 v2.2.2 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/stretchr/objx v0.5.2 // indirect
-	github.com/stretchr/testify v1.11.1 // indirect
 	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
 	github.com/ugorji/go/codec v1.2.12 // indirect
 	golang.org/x/arch v0.8.0 // indirect