For those of us unfortunate to use Atlassian Bitbucket, from version 9.0 onwards OpenSearch is the only supported search server [1] - it'll be interesting to see whether this view is ever flipped back to Elasticsearch in the future.

[1] https://confluence.atlassian.com/bitbucketserver/end-of-supp...

For what it's worth, you can use a dedicated note taking app like Joplin[1] and connect it to Fastmail storage via Webdav [2].

[1] https://joplinapp.org/ [2] https://www.fastmail.com/help/files/davnftp.html