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/core/database/table/user.py

@@ -0,0 +1,31 @@
+#  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.
+
+from sqlmodel import SQLModel, Field
+from enum import IntEnum
+
+class UserAuthority(IntEnum):
+    SUPER_ADMINISTRATOR = 100
+    ADMINISTRATOR = 50
+    USER = 20
+    UNAUTHORIZED_USER = 10
+    GUEST = 0
+
+class User(SQLModel, table=True):
+    __tablename__ = 'user'
+    user_id: str = Field(primary_key=True)
+    user_name: str = Field(index=True)
+    hashed_password: str
+    user_authority: UserAuthority = Field(default=UserAuthority.USER)
+