Timeout grab camera 60 s e sorgenti admin 15 s (prima apertura GenTL lenta). Refs #106

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

src/frontend/flask_app/blueprints/maker.py

@@ -17,6 +17,9 @@ from services.file_proxy import proxy_file
 
 maker_bp = Blueprint("maker", __name__, url_prefix="/maker")
 
+# #106: la prima apertura GenTL dopo l'avvio supera 15 s, il grab ha bisogno di piu margine
+CAMERA_GRAB_TIMEOUT_S = 60
+
 
 # ============================================================================
 # PAGINE (GET)
@@ -608,7 +611,7 @@ def api_station_camera_grab(station_id: int):
         resp = http_requests.post(
             f"{camera_url.rstrip('/')}/camera/grab",
             json={"source": camera_source, "trigger": "continuo", "timeout_ms": 5000},
-            timeout=15,
+            timeout=CAMERA_GRAB_TIMEOUT_S,  # #106: era 15, troppo corto alla prima apertura GenTL
         )
     except http_requests.RequestException as exc:
         return jsonify({