Web Manifest supports and id member, which is described in this pull request: https://github.com/w3c/manifest/pull/988 It provides a stable identifier, based on there origin of the web application. Theoretically, this allows the a web application's details (as described in the manifest) to be updated after install.
<rdar://problem/83656112>
Pull request: https://github.com/WebKit/WebKit/pull/5800
Committed 256182@main (7e448378499b): <https://commits.webkit.org/256182@main> Reviewed commits have been landed. Closing PR #5800 and removing active labels.