Update app.py

app.py

@@ -45,32 +45,6 @@ def log_memory_usage():
         logging.info("Process memory: unknown")
     threading.Timer(60, log_memory_usage).start()
 
-# ----------------------------------------------------------------------
-# Keep‑alive (pings public URL every 5 minutes)
-# ----------------------------------------------------------------------
-def keep_alive():
-    space_id = os.environ.get('SPACE_ID')
-    if space_id:
-        url = f"https://{space_id.replace('/', '-')}.hf.space/"
-        logging.info(f"Using external URL for keep‑alive: {url}")
-    else:
-        # Fallback: try to guess the URL from the Space's name?
-        # We'll use localhost as a last resort.
-        url = "http://127.0.0.1:7860/"
-        logging.warning("No SPACE_ID found, using localhost – will not prevent sleep!")
-
-    while True:
-        time.sleep(300)   # every 5 minutes
-        try:
-            req = urllib.request.Request(url, headers={'User-Agent': 'ARF-KeepAlive/1.0'})
-            with urllib.request.urlopen(req, timeout=30) as response:
-                status = response.getcode()
-                logging.info(f"Keep‑alive ping: {status}")
-        except Exception as e:
-            logging.warning(f"Keep‑alive failed: {e}")
-
-threading.Thread(target=keep_alive, daemon=True).start()
-
 # ----------------------------------------------------------------------
 # Plotly
 # ----------------------------------------------------------------------
@@ -190,7 +164,7 @@ async def handle_infra_with_governance(fault_type, context_window, session_state
     return output, session_state
 
 # ----------------------------------------------------------------------
-# MCMC (Metropolis‑Hastings) – no scipy needed
+# MCMC (Metropolis‑Hastings)
 # ----------------------------------------------------------------------
 class MHMCMC:
     def __init__(self, log_target, proposal_sd=0.1):