feat: add new tools for download management and enhance query capabilities

- Introduced DeleteDownloadTool, QueryDirectoriesTool, ListDirectoryTool, QueryTransferHistoryTool, and TransferFileTool to the toolset for improved download management.
- Updated __all__ exports in init.py and factory.py to include the new tools.
- Enhanced QueryDownloadsTool to support querying downloads by hash and title, providing more flexible search options and detailed results.

app/agent/tools/impl/list_directory.py

@@ -0,0 +1,119 @@
+"""查询文件系统目录内容工具"""
+
+import json
+from datetime import datetime
+from pathlib import Path
+from typing import Optional, Type
+
+from pydantic import BaseModel, Field
+
+from app.agent.tools.base import MoviePilotTool
+from app.chain.storage import StorageChain
+from app.log import logger
+from app.schemas.file import FileItem
+from app.utils.string import StringUtils
+
+
+class ListDirectoryInput(BaseModel):
+    """查询文件系统目录内容工具的输入参数模型"""
+    explanation: str = Field(..., description="Clear explanation of why this tool is being used in the current context")
+    path: str = Field(..., description="Directory path to list contents (e.g., '/home/user/downloads' or 'C:/Downloads')")
+    storage: Optional[str] = Field("local", description="Storage type (default: 'local' for local file system, can be 'smb', 'alist', etc.)")
+    sort_by: Optional[str] = Field("name", description="Sort order: 'name' for alphabetical sorting, 'time' for modification time sorting (default: 'name')")
+
+
+class ListDirectoryTool(MoviePilotTool):
+    name: str = "list_directory"
+    description: str = "List contents of a file system directory. Shows files and subdirectories with their names, types, sizes, and modification times. Returns up to 20 items and the total count if there are more items."
+    args_schema: Type[BaseModel] = ListDirectoryInput
+
+    async def run(self, path: str, storage: Optional[str] = "local",
+                  sort_by: Optional[str] = "name", **kwargs) -> str:
+        logger.info(f"执行工具: {self.name}, 参数: path={path}, storage={storage}, sort_by={sort_by}")
+
+        try:
+            # 规范化路径
+            if not path:
+                return "错误：路径不能为空"
+            
+            # 确保路径格式正确
+            if storage == "local":
+                # 本地路径处理
+                if not path.startswith("/") and not (len(path) > 1 and path[1] == ":"):
+                    # 相对路径，尝试转换为绝对路径
+                    path = str(Path(path).resolve())
+            else:
+                # 远程存储路径，确保以/开头
+                if not path.startswith("/"):
+                    path = "/" + path
+            
+            # 创建FileItem
+            fileitem = FileItem(
+                storage=storage or "local",
+                path=path,
+                type="dir"
+            )
+            
+            # 查询目录内容
+            storage_chain = StorageChain()
+            file_list = storage_chain.list_files(fileitem, recursion=False)
+            
+            if file_list is None:
+                return f"无法访问目录：{path}，请检查路径是否正确或存储是否可用"
+            
+            if not file_list:
+                return f"目录 {path} 为空"
+            
+            # 排序
+            if sort_by == "time":
+                file_list.sort(key=lambda x: x.modify_time or 0, reverse=True)
+            else:
+                # 默认按名称排序（目录优先，然后按名称）
+                file_list.sort(key=lambda x: (
+                    0 if x.type == "dir" else 1,
+                    StringUtils.natural_sort_key(x.name or "")
+                ))
+            
+            # 限制返回数量
+            total_count = len(file_list)
+            limited_list = file_list[:20]
+            
+            # 转换为字典格式
+            simplified_items = []
+            for item in limited_list:
+                # 格式化文件大小
+                size_str = None
+                if item.size:
+                    size_str = StringUtils.str_filesize(item.size)
+                
+                # 格式化修改时间
+                modify_time_str = None
+                if item.modify_time:
+                    try:
+                        modify_time_str = datetime.fromtimestamp(item.modify_time).strftime("%Y-%m-%d %H:%M:%S")
+                    except (ValueError, OSError):
+                        modify_time_str = str(item.modify_time)
+                
+                simplified = {
+                    "name": item.name,
+                    "type": item.type,
+                    "path": item.path,
+                    "size": size_str,
+                    "modify_time": modify_time_str
+                }
+                # 如果是文件，添加扩展名
+                if item.type == "file" and item.extension:
+                    simplified["extension"] = item.extension
+                simplified_items.append(simplified)
+            
+            result_json = json.dumps(simplified_items, ensure_ascii=False, indent=2)
+            
+            # 如果结果被裁剪，添加提示信息
+            if total_count > 20:
+                return f"注意：目录中共有 {total_count} 个项目，为节省上下文空间，仅显示前 20 个项目。\n\n{result_json}"
+            else:
+                return result_json
+        except Exception as e:
+            logger.error(f"查询目录内容失败: {e}", exc_info=True)
+            return f"查询目录内容时发生错误: {str(e)}"
+