It's very hard to figure out what has changed between cms_pico versions, given that there isn't even a summary of changes in the GitHub release notes, nor is there a dedicated CHANGELOG.md.

Can you please provide a CHANGELOG.md as documented in the Nextcloud developer documentation, so that not only people who fi

The "fields lists" settings would be replaced by "fields rules" where blacklist/whitelist is renamed to "should match" and "shouldn't match" and the content would be a regex capture group, like :

first|second|third

The code would be something like

$rule = array_filter($this->form->config('rules'), function($rule) {
    return $rule->field_type == $this->ty

we already know that users and rights are in default pico config file..

but since i see that's no api for external apps outside of pico .. could be separate at least the users file, .. we can use it with one line per user and implode with \n for later admin those in onConfigLoaded function.. maybe we need a specific file load funtion..

if not then how could i setup with a external tool