feat(a11y/i18n): inject user locale to chat / crisp

app/controllers/application_controller.rb

@@ -337,6 +337,8 @@ class ApplicationController < ActionController::Base
       extract_locale_from_accept_language_header ||
       I18n.default_locale
 
+    gon.locale = locale
+
     I18n.with_locale(locale, &action)
   end
 

app/javascript/shared/track/crisp.ts

@@ -1,11 +1,15 @@
 import { getConfig } from '@utils';
 const {
-  crisp: { key, enabled, administrateur }
+  crisp: { key, enabled, administrateur },
+  locale
 } = getConfig();
 
 declare const window: Window &
   typeof globalThis & {
     CRISP_WEBSITE_ID?: string | null;
+    CRISP_RUNTIME_CONFIG?: {
+      locale: string;
+    };
     $crisp: (
       | [cmd: string, key: string, value: unknown]
       | [key: string, value: unknown]
@@ -15,6 +19,9 @@ declare const window: Window &
 if (enabled) {
   window.$crisp = [];
   window.CRISP_WEBSITE_ID = key;
+  window.CRISP_RUNTIME_CONFIG = {
+    locale: locale
+  };
 
   const script = document.createElement('script');
   const firstScript = document.getElementsByTagName('script')[0];

app/javascript/shared/utils.ts

@@ -16,6 +16,7 @@ const Gon = z
         api_education_url: z.string().optional()
       })
       .default({}),
+    locale: z.string().default('fr'),
     matomo: z
       .object({
         cookieDomain: z.string().optional(),