fix(deploy): reduce backend worker footprint

backend/src/v1/agent/asr.py

@@ -3,9 +3,6 @@ from __future__ import annotations
 import asyncio
 from typing import Any
 
-import dashscope
-from dashscope.audio.asr import Recognition, RecognitionCallback
-
 from core.config.settings import config
 from core.logging import get_logger
 
@@ -28,6 +25,9 @@ class AsrService:
 
     async def transcribe_file(self, file_path: str, filename: str) -> str:
         try:
+            import dashscope
+            from dashscope.audio.asr import Recognition, RecognitionCallback
+
             dashscope.api_key = self._get_api_key()
 
             loop = asyncio.get_event_loop()

backend/src/v1/agent/dependencies.py

@@ -48,7 +48,7 @@ class TaskiqQueueClient:
 
     @staticmethod
     def _select_queue_task(command: dict[str, object]) -> Any:
-        from core.agentscope.runtime.tasks import (
+        from core.agentscope.runtime.task_handles import (
             run_command_task_agent,
             run_command_task_general,
         )

backend/src/v1/feedback/tasks.py

@@ -5,15 +5,11 @@ from pathlib import Path
 
 from sqlalchemy import select
 from structlog import get_logger
-from taskiq_redis import RedisScheduleSource
 
 from core.config.settings import config
 from core.db.session import AsyncSessionLocal
-from core.email.sender import EmailAttachment, EmailMessage, EmailSender
-from core.email.template_loader import load_template
-from core.taskiq.app import worker_general_broker
+from core.taskiq.app import worker_agent_broker
 from models.user_feedback import UserFeedback
-from v1.feedback.report import generate_feedback_report
 
 logger = get_logger("v1.feedback.tasks")
 
@@ -52,6 +48,8 @@ def _build_report_email_html(
     end_time: datetime,
     push_hour: int,
 ) -> str:
+    from core.email.template_loader import load_template
+
     template = load_template("feedback", "daily_report.html")
     return template.substitute(
         start_date=start_time.strftime("%Y-%m-%d"),
@@ -70,6 +68,8 @@ def _build_no_feedback_email_html(
     end_time: datetime,
     push_hour: int,
 ) -> str:
+    from core.email.template_loader import load_template
+
     template = load_template("feedback", "no_feedback.html")
     return template.substitute(
         start_date=start_time.strftime("%Y-%m-%d"),
@@ -87,6 +87,8 @@ async def _send_feedback_email(
     push_hour: int,
     report_path: Path | None = None,
 ) -> bool:
+    from core.email.sender import EmailAttachment, EmailMessage, EmailSender
+
     sender = EmailSender()
 
     if feedbacks:
@@ -123,12 +125,14 @@ async def _send_feedback_email(
 
 
 # type: ignore reportArgumentType for taskiq decorator
-@worker_general_broker.on_event("startup")  # pyright: ignore[reportArgumentType]
+@worker_agent_broker.on_event("startup")  # pyright: ignore[reportArgumentType]
 async def _register_feedback_report_schedule() -> None:
     if not config.feedback_report.enabled:
         logger.info("Feedback report scheduling disabled")
         return
 
+    from taskiq_redis import RedisScheduleSource
+
     schedule_source = RedisScheduleSource(
         url=config.taskiq_broker_url,
         prefix="schedule:feedback",
@@ -146,12 +150,14 @@ async def _register_feedback_report_schedule() -> None:
     )
 
 
-@worker_general_broker.task(task_name="tasks.feedback.generate_daily_report")
+@worker_agent_broker.task(task_name="tasks.feedback.generate_daily_report")
 async def generate_daily_feedback_report() -> str | None:
     if not config.feedback_report.enabled:
         logger.info("Feedback report is disabled, skipping")
         return None
 
+    from v1.feedback.report import generate_feedback_report
+
     now = datetime.now(timezone.utc)
     push_hour = 10
     end_time = now.replace(hour=push_hour, minute=0, second=0, microsecond=0)
@@ -192,6 +198,8 @@ async def generate_daily_feedback_report() -> str | None:
 
 
 async def generate_all_feedback_report() -> Path:
+    from v1.feedback.report import generate_feedback_report
+
     async with AsyncSessionLocal() as session:
         stmt = select(UserFeedback).order_by(UserFeedback.created_at.desc())
         result = await session.execute(stmt)