chore: initial commit for Pretor v0.1.0-alpha

正式发布 Pretor 平台的首个 alpha 版本。本项目旨在构建一个基于分布式架构的多智能体协同工作流水线。

核心功能实现：
1. 建立基于 BaseIndividual 的动态插件加载机制。
2. 实现三类核心 worker_individual 子个体。
3. 集成 Ray 框架支持分布式集群调度。
4. 基于 PostgreSQL 的全量持久化存储方案。
5. 提供完整的 FastAPI 后端与 React 前端交互界面。

pretor/utils/get_tool.py

@@ -0,0 +1,80 @@
+#  Copyright 2026 zhaoxi826
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
+import importlib.util
+import os
+import sys
+from typing import Callable, Dict, List
+import pathlib
+from pretor.utils.ray_hook import ray_actor_hook
+
+from pretor.utils.logger import get_logger
+logger = get_logger('get_tool')
+_tool_cache: Dict[str, Callable] = {}
+
+
+def _get_tool_func(tool_name: str) -> Callable | None:
+    func = _tool_cache.get(tool_name, None)
+    if func:
+        return func
+
+    app_root = "/app"
+    tool_plugin_dir = os.path.join(app_root, "pretor", "plugin", "tool_plugin", tool_name)
+
+    if not os.path.exists(tool_plugin_dir) or not os.path.isdir(tool_plugin_dir):
+        logger.error(f"Tool directory not found: {tool_plugin_dir}")
+        return None
+
+    init_file = os.path.join(tool_plugin_dir, "__init__.py")
+    if not os.path.exists(init_file):
+        logger.error(f"Tool init file not found: {init_file}")
+        return None
+
+    try:
+        module_name = f"pretor.plugin.tool_plugin.{tool_name}"
+        spec = importlib.util.spec_from_file_location(module_name, init_file)
+        if spec is None or spec.loader is None:
+            logger.error(f"Failed to create spec for {module_name}")
+            return None
+
+        module = importlib.util.module_from_spec(spec)
+        sys.modules[module_name] = module
+        spec.loader.exec_module(module)
+
+        func = getattr(module, tool_name, None)
+
+        if not callable(func):
+            logger.error(f"Tool function '{tool_name}' not found or not callable in {module_name}")
+            return None
+        _tool_cache[tool_name] = func
+        return func
+    except Exception as e:
+        logger.error(f"Failed to load module {module_name}: {e}")
+        return None
+
+def del_tool_cache(tool_name: str) -> None:
+    if tool_name in _tool_cache:
+        del _tool_cache[tool_name]
+
+def load_tools_from_list(tool_names: List[str] | None) -> List[Callable]:
+    if not tool_names:
+        return []
+
+    tool_list = []
+    for tool_name in tool_names:
+        tool_func = _get_tool_func(tool_name)
+        if tool_func:
+            tool_list.append(tool_func)
+
+    return tool_list