Backend: date dei filtri dei report e utenti setup in ora italiana/UTC esplicito (#42)

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

src/backend/api/routers/setup.py

@@ -6,7 +6,7 @@ NOT protected by API Key auth (standalone access).
 import hmac
 import random
 from datetime import datetime, timedelta
-from src.backend.utils.tempo import utcnow
+from src.backend.utils.tempo import iso_utc, utcnow
 from pathlib import Path
 
 from alembic import command
@@ -604,8 +604,8 @@ async def list_users(body: PasswordBody):
                     "roles": u.roles or [],
                     "is_admin": u.is_admin,
                     "active": u.active,
-                    "created_at": u.created_at.isoformat() if u.created_at else None,
-                    "last_login": u.last_login.isoformat() if u.last_login else None,
+                    "created_at": iso_utc(u.created_at) or None,
+                    "last_login": iso_utc(u.last_login) or None,
                 }
                 for u in users
             ],