Add frontend loading imporvements

gateway/app/middleware/auth.py

@@ -39,6 +39,11 @@ PUBLIC_ROUTES = [
     "/api/v1/demo/sessions"
 ]
 
+# Routes accessible with demo session (no JWT required, just demo session header)
+DEMO_ACCESSIBLE_ROUTES = [
+    "/api/v1/tenants/",  # All tenant endpoints accessible in demo mode
+]
+
 class AuthMiddleware(BaseHTTPMiddleware):
     """
     Enhanced Authentication Middleware with Tenant Access Control