feat (patient): add guard for reg and sys

internal/lib/auth/tycovar.go

@@ -107,3 +107,7 @@ func (a AuthInfo) HasEmployeePosition() bool {
 func (a AuthInfo) IsReg() bool {
 	return a.Employee_Position_Code != nil && *a.Employee_Position_Code == string(ero.EPCReg)
 }
+
+func (a AuthInfo) IsSys() bool {
+	return a.User_ContractPosition_Code == string(ero.CSCSys)
+}