feat: allow editing user profile settings

frontend/src/locales/en.json

@@ -310,14 +310,24 @@
     "description": "Manage the portrait and account details shown inside the workspace.",
     "updatePortrait": "Update portrait",
     "accountDetails": "Account details",
-    "accountDetailsDescription": "Additional account editing fields can be added here next.",
+    "accountDetailsDescription": "Edit the profile details other workspace members see.",
+    "saveDetails": "Save details",
+    "saved": "Profile details saved",
+    "portraitSaved": "Portrait saved",
     "alias": "Alias",
+    "firstname": "First name",
+    "lastname": "Last name",
     "fullName": "Full name",
     "email": "Email",
     "noEmail": "No email set",
     "cropperTitle": "Update user portrait",
     "savePortrait": "Save portrait",
-    "choosePortrait": "Choose portrait"
+    "choosePortrait": "Choose portrait",
+    "errors": {
+      "emailRequired": "Email is required.",
+      "saveFailed": "Profile details could not be saved.",
+      "portraitFailed": "Portrait could not be saved."
+    }
   },
   "workspaceSettings": {
     "eyebrow": "Settings",

frontend/src/locales/fr.json

@@ -310,14 +310,24 @@
     "description": "Gérez le portrait et les informations du compte affichés dans l'espace.",
     "updatePortrait": "Mettre à jour le portrait",
     "accountDetails": "Détails du compte",
-    "accountDetailsDescription": "Des champs supplémentaires d'édition du compte peuvent être ajoutés ici ensuite.",
+    "accountDetailsDescription": "Modifiez les informations de profil visibles par les autres membres.",
+    "saveDetails": "Enregistrer les détails",
+    "saved": "Informations de profil enregistrées",
+    "portraitSaved": "Portrait enregistré",
     "alias": "Alias",
+    "firstname": "Prénom",
+    "lastname": "Nom",
     "fullName": "Nom complet",
     "email": "Email",
     "noEmail": "Aucun email défini",
     "cropperTitle": "Mettre à jour le portrait utilisateur",
     "savePortrait": "Enregistrer le portrait",
-    "choosePortrait": "Choisir un portrait"
+    "choosePortrait": "Choisir un portrait",
+    "errors": {
+      "emailRequired": "L'email est requis.",
+      "saveFailed": "Les informations de profil n'ont pas pu être enregistrées.",
+      "portraitFailed": "Le portrait n'a pas pu être enregistré."
+    }
   },
   "workspaceSettings": {
     "eyebrow": "Paramètres",