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/module/user.py

@@ -0,0 +1,135 @@
+#  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 pretor.core.database.table.user import User
+from sqlmodel import select
+from pretor.utils.error import UserNotExistError, UserPasswordError
+from pretor.core.database.database_exception import database_exception
+from pretor.core.database.table.user import UserAuthority
+from pretor.utils.access import Accessor
+
+class AuthDatabase:
+    def __init__(self, async_session_maker):
+        self.async_session_maker = async_session_maker
+
+    @database_exception
+    async def add_user(self, user_name: str, hashed_password: str) -> User:
+        from ulid import ULID
+        async with self.async_session_maker() as session:
+            # Check if any users exist
+            statement = select(User).limit(1)
+            results = await session.execute(statement)
+            existing_user = results.first()
+
+            authority = UserAuthority.USER
+            if existing_user is None:
+                authority = UserAuthority.SUPER_ADMINISTRATOR
+
+            user = User(
+                user_id=str(ULID()),
+                user_name=user_name,
+                hashed_password=hashed_password,
+                user_authority=authority
+            )
+            session.add(user)
+            await session.commit()
+            await session.refresh(user)
+            return user
+
+    @database_exception
+    async def change_password(self, user_name, old_password, new_password) -> User:
+        async with self.async_session_maker() as session:
+            statement = select(User).where(User.user_name == user_name)
+            results = await session.execute(statement)
+            user = results.scalar_one_or_none()
+            if user is None:
+                raise UserNotExistError()
+            if not Accessor.verify_password(old_password, user.hashed_password):
+                raise UserPasswordError()
+            user.hashed_password = new_password
+            session.add(user)
+            await session.commit()
+            await session.refresh(user)
+            return user
+
+    @database_exception
+    async def delete_user(self, user_name: str) -> None:
+        async with self.async_session_maker() as session:
+            statement = select(User).where(User.user_name == user_name)
+            results = await session.execute(statement)
+            user = results.scalar_one_or_none()
+            if user is None:
+                raise UserNotExistError()
+            session.delete(user)
+            await session.commit()
+
+    @database_exception
+    async def delete_user_by_id(self, user_id: str) -> None:
+        async with self.async_session_maker() as session:
+            user = await session.get(User, user_id)
+            if user is None:
+                raise UserNotExistError()
+            session.delete(user)
+            await session.commit()
+
+    @database_exception
+    async def login_user(self, user_name: str) -> str:
+        async with self.async_session_maker() as session:
+            statement = select(User).where(User.user_name == user_name)
+            results = await session.execute(statement)
+            user = results.scalar_one_or_none()
+            if user is None:
+                raise UserNotExistError()
+            return user
+
+    @database_exception
+    async def get_all_users(self) -> list[User]:
+        async with self.async_session_maker() as session:
+            statement = select(User)
+            results = await session.execute(statement)
+            users = results.scalars().all()
+            return list(users)
+
+    @database_exception
+    async def get_user_authority(self, user_id: str) -> UserAuthority:
+        async with self.async_session_maker() as session:
+            user = await session.get(User, user_id)
+            if user is None:
+                raise UserNotExistError()
+            return user.user_authority
+
+    @database_exception
+    async def change_user_authority(self, user_id: str, new_authority: UserAuthority) -> User:
+        """
+        Changes the authority level of a specific user.
+
+        Args:
+            user_id: The ID of the user whose authority is to be changed.
+            new_authority: The new authority level to assign to the user.
+
+        Returns:
+            User: The updated user object.
+
+        Raises:
+            UserNotExistError: If the specified user does not exist.
+        """
+        async with self.async_session_maker() as session:
+            user = await session.get(User, user_id)
+            if user is None:
+                raise UserNotExistError()
+            user.user_authority = new_authority
+            session.add(user)
+            await session.commit()
+            await session.refresh(user)
+            return user