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/provider.py

@@ -0,0 +1,64 @@
+#  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 typing import List
+
+from pretor.core.database.table.provider import Provider
+from sqlmodel import select
+from pretor.core.database.database_exception import database_exception
+
+class ProviderDatabase:
+    def __init__(self, async_session_maker):
+        self.async_session_maker = async_session_maker
+
+    @database_exception
+    async def get_provider(self) -> List[Provider]:
+        async with self.async_session_maker() as session:
+            statement = select(Provider)
+            results = await session.execute(statement)
+            results = results.scalars().all()
+            providers = [Provider(provider_title=provider.provider_title,
+                                  provider_url=provider.provider_url,
+                                  provider_apikey=provider.provider_apikey,
+                                  provider_models=provider.provider_models,
+                                  provider_type=provider.provider_type) for provider in results]
+            return providers
+
+    @database_exception
+    async def add_provider(self, **kwargs) -> None:
+        async with self.async_session_maker() as session:
+            provider = Provider(**kwargs)
+            session.add(provider)
+            await session.commit()
+
+    @database_exception
+    async def delete_provider(self, provider_id: str) -> None:
+        async with self.async_session_maker() as session:
+            provider = await session.get(Provider, provider_id)
+            if provider is not None:
+                session.delete(provider)
+                await session.commit()
+
+    @database_exception
+    async def update_provider(self, provider_id: str, **kwargs) -> Provider:
+        async with self.async_session_maker() as session:
+            provider = await session.get(Provider, provider_id)
+            if provider is not None:
+                for key, value in kwargs.items():
+                    setattr(provider, key, value)
+                session.add(provider)
+                await session.commit()
+                await session.refresh(provider)
+                return provider
+            return None