feat: 類似度算出バッチ修正，ほか（#228） (#232)

#228

#228

#228

Co-authored-by: miteruzo <miteruzo@naver.com>
Reviewed-on: #232

backend/spec/support/test_records.rb

@@ -5,4 +5,11 @@ module TestRecords
                  role: 'member',
                  banned: false)
   end
+
+  def create_admin_user!
+    User.create!(name: 'spec admin',
+                 inheritance_code: SecureRandom.hex(16),
+                 role: 'admin',
+                 banned: false)
+  end
 end