* Add option to apply filter actions to existing articles
* make fix-all
* Fixes
* Another approach with preview
New approach: 20479475c9
<img width="666" height="202" alt="image" src="https://github.com/user-attachments/assets/bb68ede4-60c8-4e0c-9317-c5ed7a6ad7df" />
Additional improvements:
* Also implemented at category level, and at global level
* Also implemented for favourites at global level
Shortcomings:
* Does not always work reliably with advanced regex, since the DB's flavour is not necessarily the same than PHP's
Related: https://github.com/FreshRSS/FreshRSS/pull/8141
* make fix-all
---------
Co-authored-by: Alexandre Alapetite <alexandre@alapetite.fr>
* Change regional language codes
According to `ISO-639-1` and `ISO-3166-1 alpha-2` recommendations, regional
languages must be written with the language code in lowercase and the region
in uppercase. For instance, we should have `en-US` instead of `en-us`.
Folders have been updated to reflect those recommendations and regional
language codes have been updated in the translation files.
* Update README files
* Fix configuration for typos
* Revert language order in documentation
* Remove unnecessary code
* Change language configuration getter
* Fix phpstan error
* Fix typo
* Add types
* escape regex
* Move language logic to avoid magic or deprecated methods
* Minor fix on regex
