A character collection for the browser game 'Shiro Project:Re'.
The favicon is from ICOOON-MONO. Shiro musume images and data are from 城プロRE 攻略Wiki.
Cache web fonts. Write user data into local storage/indexed db and support backup to disk. Support clear all filters. Support dark mode. Ensure cached data is new enough (by hash). Handle the error in service worker in devel env. New UI for mobile mode. Use a configurable og:image and og:url.