feat: add CORS support and enhance session routes for better sensor management

realtime/src/index.js

@@ -8,6 +8,15 @@ const wsHandler = require('./ws/handler');
 
 app.use(express.json());
 
+// CORS — consenti richieste dalla console e altri client browser
+app.use((req, res, next) => {
+    res.header('Access-Control-Allow-Origin', '*');
+    res.header('Access-Control-Allow-Methods', 'GET, POST, OPTIONS');
+    res.header('Access-Control-Allow-Headers', 'Content-Type');
+    if (req.method === 'OPTIONS') return res.sendStatus(204);
+    next();
+});
+
 // DATABASE POSTGRESQL
 
 app.get('/', (req, res) => {