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/individual.py

@@ -0,0 +1,83 @@
+#  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.individual import WorkerIndividual
+from sqlmodel import select
+from typing import List, Optional
+from pretor.core.database.database_exception import database_exception
+
+from ulid import ULID
+
+class IndividualDatabase:
+    def __init__(self, async_session_maker):
+        self.async_session_maker = async_session_maker
+
+    @database_exception
+    async def add_worker_individual(self, **kwargs) -> WorkerIndividual:
+        async with self.async_session_maker() as session:
+            agent_id = str(ULID())
+            individual = WorkerIndividual(agent_id=agent_id, **kwargs)
+            session.add(individual)
+            await session.commit()
+            await session.refresh(individual)
+            return individual
+
+    @database_exception
+    async def get_worker_individual(self, agent_id: str) -> Optional[WorkerIndividual]:
+        async with self.async_session_maker() as session:
+            statement = select(WorkerIndividual).where(WorkerIndividual.agent_id == agent_id)
+            results = await session.execute(statement)
+            return results.scalar_one_or_none()
+
+    @database_exception
+    async def get_worker_individual_list(self, owner_id: str) -> List[WorkerIndividual]:
+        async with self.async_session_maker() as session:
+            statement = select(WorkerIndividual).where(WorkerIndividual.owner_id == owner_id)
+            results = await session.execute(statement)
+            return list(results.scalars().all())
+
+    @database_exception
+    async def update_worker_individual(self, agent_id: str, **kwargs) -> Optional[WorkerIndividual]:
+        async with self.async_session_maker() as session:
+            statement = select(WorkerIndividual).where(WorkerIndividual.agent_id == agent_id)
+            results = await session.execute(statement)
+            individual = results.scalar_one_or_none()
+            if not individual:
+                return None
+            for key, value in kwargs.items():
+                if value is not None:
+                    setattr(individual, key, value)
+            session.add(individual)
+            await session.commit()
+            await session.refresh(individual)
+            return individual
+
+    @database_exception
+    async def delete_worker_individual(self, agent_id: str) -> bool:
+        async with self.async_session_maker() as session:
+            statement = select(WorkerIndividual).where(WorkerIndividual.agent_id == agent_id)
+            results = await session.execute(statement)
+            individual = results.scalar_one_or_none()
+            if not individual:
+                return False
+            session.delete(individual)
+            await session.commit()
+            return True
+
+    @database_exception
+    async def get_all_worker_individual(self) -> List[WorkerIndividual]:
+        async with self.async_session_maker() as session:
+            statement = select(WorkerIndividual)
+            results = await session.execute(statement)
+            return list(results.scalars().all())