I’m a bit late with reading those news but it looks like phpstorm will get native support for Psalm annotations: https://blog.jetbrains.com/phpstorm/2020/10/phpstorm-2020-3-eap-2/
For VSCode the integration is possible as well https://github.com/psalm/psalm-vscode-plugin
This is really cool and should make it a lot easier to see problems as we develop, not just at the late CI check. But our dev docs now also have an example of psalm usage https://docs.nextcloud.com/server/latest/developer_manual/digging_deeper/continuous_integration.html#static-analysis if you want to set this up for an app.
Cheers and happy typing