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/measure.py

@@ -17,6 +17,9 @@ from services.file_proxy import proxy_file
 
 measure_bp = Blueprint("measure", __name__)
 
+# #106: la prima apertura GenTL dopo l'avvio supera 15 s, il grab ha bisogno di piu margine
+CAMERA_GRAB_TIMEOUT_S = 60
+
 # Session key holding a station chosen at runtime, overriding Config.STATION_CODE.
 STATION_OVERRIDE_KEY = "station_override"
 
@@ -1117,7 +1120,7 @@ def api_vision_grab():
         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({