rangeSlider - how to customize the displayed value ?

[cfab]

Hello, I'm not sure if I set up this correctly but I would like to have a facet that allows to search within the posts by publication date So here under is what I did (I just kept one other facet as example (lcr_post_theme which is a custom taxonomy). It works, my lcr_post_theme facet and the slider, but the displayed value of the rangeSlider are unix timestamp, how can display maybe only the year, ofrbetter, the full date in a format like this: 2024-08-26 Here is the code, the settings and visual result... Any help welcome !

 add_filter('cm_typesense_schema', function ($schema, $name) {
            if ($name == 'post') {
                $schema['fields'][] = ['name' => 'lcr_post_theme', 'type' => 'string[]', 'optional' => true, 'facet' => true];
                // add a date range filter
                $schema['fields'][] = ['name' => 'publication_date', 'type' => 'int64', 'optional' => true, 'facet' => true];
            }

            return $schema;
        }, 10, 2);

        add_filter('cm_typesense_data_before_entry', function ($formatted_data, $raw_data, $object_id, $schema_name) {
            if ($schema_name == 'post') {
                // theme
                $lcr_post_theme = [];
                $terms = get_the_terms($object_id, 'lcr_post_theme');
                if ($terms) {
                    foreach ($terms as $term) {
                        $lcr_post_theme[] = $term->name;
                    }
                }

                // date should be an int64
                $formatted_data['publication_date'] = strtotime(get_the_date('Y-m-d', $object_id));
                // $formatted_data['publication_date'] = get_the_date('Y-m-d', $object_id); // -> this creates an error while indexing
            }

            return $formatted_data;
        }, 10, 4);

        /** Add the genre option to available index list **/

        add_filter('cm_typesense_available_index_types', function ($available_post_types) {
            $available_post_types['lcr_post_theme'] = ['label' => 'Thèmes', 'value' => 'lcr_post_theme', 'type' => 'taxonomy'];
            // not sure if this needed
            $available_post_types['publication_date'] = ['label' => 'Date de publication', 'value' => 'publication_date', 'type' => 'date'];

            return $available_post_types;
        });

        add_filter('cm_typesense_enabled_taxonomy_for_post_type', function ($taxonomies) {
            $taxonomies[] = 'lcr_post_theme';
            // not sure if this is needed as well
            $taxonomies[] = 'publication_date';

            return $taxonomies;
        });

        add_filter('cm_typesense_filter_type', function ($filterType, $filterName) {
            if ($filterName == 'publication_date') {
                $filterType = 'rangeSlider';
            }

            return $filterType;
        }, 10, 2);

        // add_filter('cm_typesense_search_facet_settings', function ($facet_settings, $facet) {
        //     if ($facet == 'publication_date') {
        // I guess it is here that I may customize somethin gbut how ??

        //     }

        //     return $facet_settings;
        // }, 10, 2);