refactor: migrate broker initialization to taskiq_app and remove unused broker import

feat: add channel event processing handler for Telegram and Slack

backend/app/worker/background/channel.py

@@ -0,0 +1,27 @@
+"""In-process handler for channel-bot webhook events (Telegram, Slack).
+
+Dispatched via FastAPI ``BackgroundTasks`` from the webhook routes so the platform
+gets a fast 200 OK while routing/AI happens in the background.
+"""
+
+import logging
+from typing import Any
+
+from app.db.session import get_db_context
+from app.services.channels.router import ChannelMessageRouter
+
+logger = logging.getLogger(__name__)
+
+
+async def process_channel_event(incoming: Any) -> None:
+    """Route an incoming channel event to its handler.
+
+    Errors are logged with full traceback but never re-raised — the response to the
+    platform has already been sent, and an unhandled exception here would just become
+    a noisy stack trace in the API process logs.
+    """
+    try:
+        async with get_db_context() as db:
+            await ChannelMessageRouter().route(incoming, db)
+    except Exception:
+        logger.exception("channel_event_processing_failed")

backend/app/worker/broker.py

@@ -1,14 +0,0 @@
-"""Taskiq broker — shared across all task modules."""
-
-from taskiq_redis import ListQueueBroker, RedisAsyncResultBackend
-
-from app.core.config import settings
-
-# Create Taskiq broker with Redis
-broker = ListQueueBroker(
-    url=settings.TASKIQ_BROKER_URL,
-).with_result_backend(
-    RedisAsyncResultBackend(
-        redis_url=settings.TASKIQ_RESULT_BACKEND,
-    )
-)

backend/app/worker/taskiq_app.py

@@ -2,13 +2,20 @@
 
 from taskiq import TaskiqScheduler
 from taskiq.schedule_sources import LabelScheduleSource
+from taskiq_redis import ListQueueBroker, RedisAsyncResultBackend
 
-from app.worker.broker import broker
-import app.worker.tasks  # noqa: F401 — register @broker.task decorated functions
-import app.worker.tasks.schedules  # noqa: F401 — register scheduled tasks
+from app.core.config import settings
+
+# Create Taskiq broker with Redis
+broker = ListQueueBroker(
+    url=settings.TASKIQ_BROKER_URL,
+).with_result_backend(
+    RedisAsyncResultBackend(
+        redis_url=settings.TASKIQ_RESULT_BACKEND,
+    )
+)
 
 # Create scheduler for periodic tasks
-# LabelScheduleSource auto-discovers @broker.task(schedule=[...]) decorated functions
 scheduler = TaskiqScheduler(
     broker=broker,
     sources=[LabelScheduleSource(broker)],
@@ -26,3 +33,6 @@ async def startup() -> None:
 async def shutdown() -> None:
     """Cleanup on shutdown."""
     pass
+
+
+import app.worker.tasks.schedules  # noqa: F401

backend/app/worker/tasks/rag_tasks.py

@@ -6,7 +6,7 @@ import tempfile
 from pathlib import Path
 from typing import Any
 
-from app.worker.broker import broker
+from app.worker.taskiq_app import broker
 
 logger = logging.getLogger(__name__)
 

backend/app/worker/tasks/schedules.py

@@ -1,6 +1,6 @@
 """Taskiq scheduled tasks (cron-like)."""
 
-from app.worker.broker import broker
+from app.worker.taskiq_app import broker
 from app.worker.tasks.rag_tasks import check_scheduled_syncs