refactor: wrap start function execution in try-except block

Improve error handling by catching Failed exceptions during the run and ensuring the running flag is properly released on failure. This prevents the application from remaining in a locked state after critical errors.

VERSION

@@ -1 +1 @@
-4.6.3-develop3
+4.6.3-develop4

qbit_manage.py

@@ -455,6 +455,8 @@ def start():
     # Acquire lock only briefly to set the flag, then release immediately
     with is_running_lock:
         is_running.value = True  # Set flag to indicate a run is in progress
+
+    try:
         start_time = datetime.now()
         args["time"] = start_time.strftime("%H:%M")
         args["time_obj"] = start_time
@@ -569,18 +571,8 @@ def start():
             body = logger.separator(msg)[0]
             return body
 
-    try:
         cfg = Config(default_dir, args)
         qbit_manager = cfg.qbt
-    except Exception as ex:
-        logger.stacktrace()
-        logger.print_line(ex, "CRITICAL")
-        logger.print_line("Exiting scheduled Run.", "CRITICAL")
-        finished_run(next_scheduled_run_info_shared)
-        # Release flag when config validation fails
-        with is_running_lock:
-            is_running.value = False
-        return None
 
         if qbit_manager:
             # Execute qBittorrent commands using shared function with error handling
@@ -615,6 +607,15 @@ def start():
                 with is_running_lock:
                     is_running.value = False
                 logger.info("Released lock for web API requests despite webhook error")
+    except Failed as ex:
+        logger.stacktrace()
+        logger.print_line(ex, "CRITICAL")
+        logger.print_line("Exiting scheduled Run.", "CRITICAL")
+        finished_run(next_scheduled_run_info_shared)
+        # Release flag when any Failed exception occurs during the run
+        with is_running_lock:
+            is_running.value = False
+        return None
 
 
 def end():