Ensure admin user is created before the server starts

Move the `ensureAdminUserExists` call to before `server.listen` in `server/index.ts`.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: ae4037a0-2a6f-4530-9bac-79b543286bda
Replit-Commit-Checkpoint-Type: intermediate_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/397bca8c-984f-43ff-841a-10897aeb8140/ae4037a0-2a6f-4530-9bac-79b543286bda/COxOmlM

server/index.ts

@@ -95,16 +95,17 @@ app.use((req, res, next) => {
   // this serves both the API and the client.
   // It is the only port that is not firewalled.
   const port = parseInt(process.env.PORT || '5000', 10);
+  
+  // Initialiser l'utilisateur admin par défaut avant de démarrer le serveur
+  await ensureAdminUserExists();
+  
   server.listen({
     port,
     host: "0.0.0.0",
     reusePort: true,
-  }, async () => {
+  }, () => {
     log(`serving on port ${port}`);
     
-    // Initialiser l'utilisateur admin par défaut
-    await ensureAdminUserExists();
-    
     // Démarrer le scheduler pour les publications programmées
     schedulerService.start();
   });