add a cool down between pings

src/app.py

@@ -73,6 +73,9 @@ def ping_loop():
                     print(f"[ping] ✅ {url}")
             except Exception as e:
                 print(f"[ping] ❌ {url} | {e}")
+            
+            # Cooldown de 1 seconde entre les pings
+            time.sleep(1)
         time.sleep(3600)  # 1h
 
 threading.Thread(target=ping_loop, daemon=True).start()