docs: add package and exported symbol comments for revive lint compliance

internal/util/password.go

@@ -18,6 +18,7 @@ package util
 
 import "golang.org/x/crypto/bcrypt"
 
+// HashPassword 使用 bcrypt 对密码进行哈希处理
 func HashPassword(password string) (string, error) {
 	hash, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
 	if err != nil {
@@ -26,6 +27,7 @@ func HashPassword(password string) (string, error) {
 	return string(hash), nil
 }
 
+// CheckPasswordHash 比较 bcrypt 哈希值与明文密码是否匹配
 func CheckPasswordHash(hash, password string) bool {
 	return bcrypt.CompareHashAndPassword([]byte(hash), []byte(password)) == nil
 }