edit all sequence

design/backend/sequence/inner/user-회원가입.puml

@@ -36,7 +36,7 @@ activate Service
 
 Service -> UserRepo: findByPhoneNumber(phoneNumber)
 activate UserRepo
-UserRepo -> UserDB: SELECT * FROM users\nWHERE phone_number = ?
+UserRepo -> UserDB: 전화번호로 사용자 조회\n(중복 가입 확인)
 activate UserDB
 UserDB --> UserRepo: 조회 결과
 deactivate UserDB
@@ -132,24 +132,24 @@ else 신규 사용자
 
         == 5단계: 데이터베이스 트랜잭션 ==
 
-        Service -> UserDB: BEGIN TRANSACTION
+        Service -> UserDB: 트랜잭션 시작
         activate UserDB
 
         Service -> UserRepo: save(User)\n(name, phoneNumber, email,\npasswordHash, createdAt)
         activate UserRepo
-        UserRepo -> UserDB: INSERT INTO users\n(name, phone_number, email,\npassword_hash, created_at)\nRETURNING user_id
+        UserRepo -> UserDB: 사용자 정보 저장\n(이름, 전화번호, 이메일,\n비밀번호해시, 생성일시)\n사용자ID 반환
         UserDB --> UserRepo: user_id
         UserRepo --> Service: User 엔티티\n(userId 포함)
         deactivate UserRepo
 
         Service -> StoreRepo: save(Store)\n(userId, storeName, industry,\naddress, businessNumberEncrypted,\nbusinessHours)
         activate StoreRepo
-        StoreRepo -> UserDB: INSERT INTO stores\n(user_id, store_name, industry,\naddress, business_number_encrypted,\nbusiness_hours)\nRETURNING store_id
+        StoreRepo -> UserDB: 매장 정보 저장\n(사용자ID, 매장명, 업종,\n주소, 암호화된사업자번호,\n영업시간)\n매장ID 반환
         UserDB --> StoreRepo: store_id
         StoreRepo --> Service: Store 엔티티\n(storeId 포함)
         deactivate StoreRepo
 
-        Service -> UserDB: COMMIT TRANSACTION
+        Service -> UserDB: 트랜잭션 커밋
         UserDB --> Service: 트랜잭션 커밋 완료
         deactivate UserDB