Co-authored-by: Claire <claire.github-309c@sitedethib.com>

Co-authored-by: Jean Boussier <jean.boussier@gmail.com>

* Validate internal actor

* Use “internal.actor” by default for the server actor username

* Fix instance actor username on the fly if it includes ':'

* Change actor name from internal.actor to mastodon.internal

* Fix BackfillAdminActionLogs post-deployment migration

* Improve migration tests

* Backfill admin action logs again

* Add tests

* Fix crash when trying to display orphaned action logs

* Add migration for older admin action logs

* Fix duplicate featured tags

* Add unique tag name validator

* Fix error message

Remove separate server hero setting

Fixes #18742

* Refactor audit log schema

* Add audit log entries for user roles

* Add database table for status-specific filters

* Add REST endpoints, entities and attributes

* Show status filters in /filters interface

* Perform server-side filtering for individual posts filters

* Fix filtering on context mismatch

* Refactor `toServerSideType` by moving it to its own module

* Move loupe and delete icons to their own module

* Add ability to filter individual posts from WebUI

* Replace keyword list by warnings (expired, context mismatch)

* Refactor server-side filtering code

* Add tests

* Change how hashtags are normalized

* Fix tests