* Move shared `fichiers-fragment.php` from `partage/` to `templates/partials/form/`
and update all include/require references
* `.gitignore`: exclude SQLite WAL/SHM journal files
* FilePond UI:
* change uploaded file block border state from yellow to green
* restyle image previews to use site light-theme colors
* Edit mode:
* remove custom existing-file preview list implementation
* preload existing files directly into FilePond pools
* include `cover` and `note_intention` assets in FilePond-managed state
* Remove obsolete upload progress bar UI and related JS includes
* Remove deprecated `Écriture` + `Image` format types from upload flow/configuration
