🔧(frontend) make web app manifest optional

Add configuration to conditionally include manifest article,
allowing deployments to customize or disable MoreLink component.

src/backend/meet/settings.py

@@ -333,6 +333,9 @@ class Base(Configuration):
         "transcript": values.DictValue(
             {}, environ_name="FRONTEND_TRANSCRIPT", environ_prefix=None
         ),
+        "manifest_link": values.Value(
+            None, environ_name="FRONTEND_MANIFEST_LINK", environ_prefix=None
+        ),
     }
 
     # Mail

src/frontend/src/api/useConfig.ts

@@ -30,6 +30,7 @@ export interface ApiConfig {
     available_modes?: RecordingMode[]
     expiration_days?: number
   }
+  manifest_link?: string
 }
 
 const fetchConfig = (): Promise<ApiConfig> => {

src/frontend/src/features/home/components/MoreLink.tsx

@@ -2,17 +2,16 @@ import { A, Text } from '@/primitives'
 import { useTranslation } from 'react-i18next'
 import { useConfig } from '@/api/useConfig'
 
-const MANIFEST_LINK =
-  'https://docs.numerique.gouv.fr/docs/1ef86abf-f7e0-46ce-b6c7-8be8b8af4c3d/'
-
 export const MoreLink = () => {
   const { t } = useTranslation('home')
   const { data } = useConfig()
 
+  if (!data?.manifest_link) return
+
   return (
     <Text as={'p'} variant={'sm'} style={{ padding: '1rem 0' }}>
       <A
-        href={MANIFEST_LINK}
+        href={data?.manifest_link}
         target="_blank"
         rel="noopener noreferrer"
         aria-label={t('moreLinkLabel')}

src/helm/env.d/dev-keycloak/values.meet.yaml.gotmpl

@@ -57,6 +57,7 @@ backend:
     FRONTEND_SUPPORT: "{'id': '58ea6697-8eba-4492-bc59-ad6562585041', 'help_article_transcript': 'https://lasuite.crisp.help/fr/article/visio-transcript-1sjq43x', 'help_article_recording': 'https://lasuite.crisp.help/fr/article/visio-enregistrement-wgc8o0', 'help_article_more_tools': 'https://lasuite.crisp.help/fr/article/visio-tools-bvxj23'}"
     FRONTEND_TRANSCRIPT: "{'form_beta_users': 'https://grist.numerique.gouv.fr/o/docs/forms/3fFfvJoTBEQ6ZiMi8zsQwX/17'}"
     FRONTEND_FEEDBACK: "{'url': 'https://grist.numerique.gouv.fr/o/docs/cbMv4G7pLY3Z/USER-RESEARCH-or-LA-SUITE/f/26'}"
+    FRONTEND_MANIFEST_LINK: "https://docs.numerique.gouv.fr/docs/1ef86abf-f7e0-46ce-b6c7-8be8b8af4c3d/"
     AWS_S3_ENDPOINT_URL: http://minio.meet.svc.cluster.local:9000
     AWS_S3_ACCESS_KEY_ID: meet
     AWS_S3_SECRET_ACCESS_KEY: password