what is pixiv-shaft fr?

Shaft is an unofficial third-party Android app for Pixiv, the Japanese platform where artists share illustrations, manga, and novels. It is a community and learning project, open-sourced under the MIT license, and not intended for commercial use. The README notes that all artwork, manga, and fiction shown in the app remains the property of the respective creators or Pixiv. The app covers the main things a Pixiv user would want from a mobile client: logging in, browsing and searching for illustrations, manga, and novels, viewing rankings by day, sorting by popularity or bookmark count, reading and posting comments, and downloading images in batch. It also supports GIF playback and saving, multi-account switching, local browsing history, and dark mode. Trending tags and Pixiv's editorial picks are accessible from within the app. The README is written primarily in Chinese, with a Japanese translation also available. A features section lists material-style UI design, smooth animations, and support for multiple languages. R18 content can be enabled by turning on the setting in the official Pixiv account on the web first. The app is available through Google Play and as direct APK downloads from the GitHub releases page. The README recommends using the official Pixiv app as the primary client and positions Shaft as an alternative or supplementary option.