feat: support independent task queue for workforce (#3232)

Co-authored-by: Wendong-Fan <133094783+Wendong-Fan@users.noreply.github.com>

Author: a7m-1st

camel/societies/workforce/task_channel.py

@@ -16,8 +16,11 @@
 from enum import Enum
 from typing import Dict, List, Optional, Set
 
+from camel.logger import get_logger
 from camel.tasks import Task
 
+logger = get_logger(__name__)
+
 
 class PacketStatus(Enum):
     r"""The status of a packet. The packet can be in one of the following
@@ -269,6 +272,46 @@ async def get_dependency_ids(self) -> List[str]:
         async with self._condition:
             return list(self._task_by_status[PacketStatus.ARCHIVED])
 
+    async def get_in_flight_tasks(self, publisher_id: str) -> List[Task]:
+        r"""Get all tasks that are currently in-flight (SENT, RETURNED
+        or PROCESSING) published by the given publisher.
+
+        Args:
+            publisher_id (str): The ID of the publisher whose
+            in-flight tasks to retrieve.
+
+        Returns:
+            List[Task]: List of tasks that are currently in-flight.
+        """
+        async with self._condition:
+            in_flight_tasks = []
+            seen_task_ids = set()  # Track seen IDs for duplicate detection
+
+            # Get tasks with SENT, RETURNED or PROCESSING
+            # status published by this publisher
+            for status in [
+                PacketStatus.SENT,
+                PacketStatus.PROCESSING,
+                PacketStatus.RETURNED,
+            ]:
+                for task_id in self._task_by_status[status]:
+                    if task_id in self._task_dict:
+                        packet = self._task_dict[task_id]
+                        if packet.publisher_id == publisher_id:
+                            # Defensive check: detect if task appears in
+                            # multiple status sets (should never happen)
+                            if task_id in seen_task_ids:
+                                logger.warning(
+                                    f"Task {task_id} found in multiple "
+                                    f"status sets. This indicates a bug in "
+                                    f"status management."
+                                )
+                                continue
+                            in_flight_tasks.append(packet.task)
+                            seen_task_ids.add(task_id)
+
+            return in_flight_tasks
+
     async def get_task_by_id(self, task_id: str) -> Task:
         r"""Get a task from the channel by its ID."""
         async with self._condition: