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/individual.py

@@ -0,0 +1,38 @@
+#  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 typing import List, Optional
+from sqlalchemy import Column, JSON
+from enum import Enum
+
+class AgentType(str, Enum):
+    SKILL_INDIVIDUAL = "skill_individual"
+    ORDINARY_INDIVIDUAL = "ordinary_individual"
+    SPECIAL_INDIVIDUAL = "special_individual"
+
+class WorkerIndividual(SQLModel, table=True):
+    __tablename__ = "worker_individual"
+    agent_id: str = Field(primary_key=True)
+    agent_name: str = Field(index=True)
+    agent_type: AgentType
+    description: str = Field(nullable=False)
+    provider_title: str
+    model_id: str
+    system_prompt: Optional[str]
+    output_template: Optional[dict] = Field(sa_column=Column(JSON),description="输出模板标识")
+    bound_skill: Optional[str] = Field(sa_column=Column(JSON))
+    workspace: Optional[List[str]] = Field(sa_column=Column(JSON))
+    tools: Optional[List[str]] = Field(sa_column=Column(JSON), default=None)
+    owner_id: str