feat: add batch AI re-organize for transfer history and search result recommendation

- Implement batch AI re-organize endpoint for transfer history with progress tracking
- Add batch_manual_transfer_redo system task template and prompt generation
- Refactor agent_manager to support generic background prompt execution
- Add AIRecommendChain for search result recommendation using agent background prompt
- Update search endpoints to use new AIRecommendChain and remove legacy code
- Enhance test cases for batch manual transfer redo
- Minor code cleanup and style fixes

app/agent/tools/impl/query_schedulers.py

@@ -7,7 +7,6 @@ from pydantic import BaseModel, Field
 
 from app.agent.tools.base import MoviePilotTool
 from app.log import logger
-from app.scheduler import Scheduler
 
 
 class QuerySchedulersInput(BaseModel):
@@ -27,6 +26,8 @@ class QuerySchedulersTool(MoviePilotTool):
     async def run(self, **kwargs) -> str:
         logger.info(f"执行工具: {self.name}")
         try:
+            from app.scheduler import Scheduler
+
             scheduler = Scheduler()
             schedulers = scheduler.list()
             if schedulers:

app/agent/tools/impl/run_scheduler.py

@@ -6,7 +6,6 @@ from pydantic import BaseModel, Field
 
 from app.agent.tools.base import MoviePilotTool
 from app.log import logger
-from app.scheduler import Scheduler
 
 
 class RunSchedulerInput(BaseModel):
@@ -36,6 +35,8 @@ class RunSchedulerTool(MoviePilotTool):
     @staticmethod
     def _run_scheduler_sync(job_id: str) -> tuple[bool, str]:
         """同步触发定时服务，避免调度器扫描阻塞事件循环。"""
+        from app.scheduler import Scheduler
+
         scheduler = Scheduler()
         for scheduler_item in scheduler.list():
             if scheduler_item.id == job_id:

app/agent/tools/impl/transfer_file.py

@@ -6,7 +6,6 @@ from typing import Optional, Type
 from pydantic import BaseModel, Field
 
 from app.agent.tools.base import MoviePilotTool
-from app.chain.transfer import TransferChain
 from app.log import logger
 from app.schemas import FileItem, MediaType
 
@@ -124,6 +123,8 @@ class TransferFileTool(MoviePilotTool):
             if not media_type_enum:
                 return f"错误：无效的媒体类型 '{media_type}'，支持的类型：'movie', 'tv'"
 
+        from app.chain.transfer import TransferChain
+
         state, errormsg = TransferChain().manual_transfer(
             fileitem=fileitem,
             target_storage=target_storage,