fix: Add is_worker_allowed_to_run function definition

Function was referenced but not defined - added implementation

cluster/v9_advanced_coordinator.py

@@ -64,6 +64,29 @@ def send_telegram_message(message: str):
     except Exception as e:
         print(f"⚠️ Error sending Telegram notification: {e}")
 
+
+def is_worker_allowed_to_run(worker_name: str) -> bool:
+    """Check if worker is allowed to run based on time restrictions"""
+    worker = WORKERS[worker_name]
+    
+    # If no time restriction, always allowed
+    if not worker.get('time_restricted', False):
+        return True
+    
+    # Check current hour (local time)
+    current_hour = datetime.now().hour
+    start_hour = worker['allowed_start_hour']
+    end_hour = worker['allowed_end_hour']
+    
+    # Handle time range that crosses midnight (e.g., 19:00 - 06:00)
+    if start_hour > end_hour:
+        # Allowed if current hour >= start OR current hour < end
+        allowed = current_hour >= start_hour or current_hour < end_hour
+    else:
+        # Normal range (e.g., 8:00 - 17:00)
+        allowed = start_hour <= current_hour < end_hour
+    
+    return allowed
 def signal_handler(sig, frame):
     """Handle termination signals"""
     message = (