feat: 人设模板系统、节点调度标签、pydantic-settings收敛、错误处理增强

新增persona_template表和CRUD API，BaseIndividualModel增加node_affinity和template_origin_id字段，
WorkerCluster支持多集群Ray资源调度，环境变量收敛到pydantic-settings统一校验，
数据库异常转换为结构化BusinessError/RetryableError，系统节点支持custom_system_prompt。

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

kilostar/core/postgres_database/model/__init__.py

@@ -34,6 +34,7 @@ from kilostar.core.postgres_database.model.mcp_server import MCPServerModel
 from kilostar.core.postgres_database.model.tool_config import ToolConfigModel
 from kilostar.core.postgres_database.model.custom_toolset import CustomToolsetModel
 from kilostar.core.postgres_database.model.system_event_log import SystemEventLog
+from kilostar.core.postgres_database.model.persona_template import PersonaTemplate
 
 # 兼容旧代码的别名
 Provider = ProviderModel
@@ -63,5 +64,6 @@ __all__ = [
     "ToolConfigModel",
     "CustomToolsetModel",
     "SystemEventLog",
+    "PersonaTemplate",
     "AgentType",
 ]

kilostar/core/postgres_database/model/individual.py

@@ -43,6 +43,12 @@ class BaseIndividualModel(BaseDataModel):
     owner_id: Mapped[str] = mapped_column(String(64), index=True)
 
     agent_type: Mapped[str] = mapped_column(String(32))
+    node_affinity: Mapped[str] = mapped_column(String(32), nullable=False, default="cpu")
+    template_origin_id: Mapped[Optional[str]] = mapped_column(
+        ForeignKey("persona_template.template_id", ondelete="SET NULL"),
+        nullable=True,
+        index=True,
+    )
 
     __mapper_args__ = {"polymorphic_on": "agent_type", "polymorphic_identity": "base"}
 

kilostar/core/postgres_database/model/persona_template.py

@@ -0,0 +1,26 @@
+from typing import List, Optional
+from sqlalchemy import String, Text, Boolean, text
+from sqlalchemy.dialects.postgresql import JSONB
+from sqlalchemy.orm import Mapped, mapped_column
+
+from .base import BaseDataModel
+
+
+class PersonaTemplate(BaseDataModel):
+    __tablename__ = "persona_template"
+
+    template_id: Mapped[str] = mapped_column(String(64), primary_key=True)
+    name: Mapped[str] = mapped_column(String(100), nullable=False, index=True)
+    description: Mapped[str] = mapped_column(Text, nullable=False, default="")
+    system_prompt: Mapped[str] = mapped_column(Text, nullable=False, default="")
+    agent_type: Mapped[str] = mapped_column(String(32), nullable=False, default="ordinary")
+    provider_title: Mapped[Optional[str]] = mapped_column(String(50))
+    model_id: Mapped[Optional[str]] = mapped_column(String(100))
+    tools: Mapped[Optional[List[str]]] = mapped_column(
+        JSONB, default=list, server_default=text("'[]'::jsonb")
+    )
+    tags: Mapped[Optional[List[str]]] = mapped_column(
+        JSONB, default=list, server_default=text("'[]'::jsonb")
+    )
+    is_builtin: Mapped[bool] = mapped_column(Boolean, default=False, nullable=False)
+    owner_id: Mapped[Optional[str]] = mapped_column(String(64), index=True)