fix: corriger les erreurs sur la route /login

- Échapper le @ dans les placeholders email (vue-i18n v9 interprète @ comme message linking)
- Gérer l'erreur silencieusement quand projects.json est inaccessible (user non connecté)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/locales/en.json

@@ -75,7 +75,7 @@
   },
   "forms": {
     "email": "Email",
-    "emailPlaceholder": "email@example.com",
+    "emailPlaceholder": "email{'@'}example.com",
     "password": "Password",
     "passwordPlaceholder": "Minimum 8 characters",
     "newPassword": "New password",

src/locales/fr.json

@@ -75,7 +75,7 @@
   },
   "forms": {
     "email": "Email",
-    "emailPlaceholder": "mail@exemple.com",
+    "emailPlaceholder": "mail{'@'}exemple.com",
     "password": "Mot de passe",
     "passwordPlaceholder": "Minimum 8 caractères",
     "newPassword": "Nouveau mot de passe",

src/stores/projects.js

@@ -52,6 +52,8 @@ export const useProjectsStore = defineStore('projects', () => {
     isProjectsLoading.value = false;
     projects.value = json.page.children;
     // }, 3000);
+  }).catch(() => {
+    isProjectsLoading.value = false;
   });
 
   // Functions