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>

tests/unit/test_persona_template_db.py

@@ -0,0 +1,74 @@
+"""``PersonaTemplateDatabase`` — list_templates 查询逻辑单元测试。"""
+
+from __future__ import annotations
+
+import pytest
+from unittest.mock import AsyncMock, MagicMock, patch
+
+from kilostar.core.postgres_database.module.persona_template import PersonaTemplateDatabase
+
+
+def _make_db():
+    session = AsyncMock()
+    session.__aenter__ = AsyncMock(return_value=session)
+    session.__aexit__ = AsyncMock(return_value=False)
+    session_maker = MagicMock(return_value=session)
+    return PersonaTemplateDatabase(session_maker), session
+
+
+@pytest.mark.anyio
+async def test_list_owner_and_builtin_uses_or():
+    """owner_id + include_builtin=True 应构造 OR 条件，不拉出其他人的模板。"""
+    db, session = _make_db()
+    execute_result = MagicMock()
+    execute_result.scalars.return_value.all.return_value = []
+    session.execute = AsyncMock(return_value=execute_result)
+
+    result = await db.list_templates(owner_id="alice", include_builtin=True)
+    assert result == []
+    # 确认 execute 被调用（OR 条件路径走通）
+    session.execute.assert_awaited_once()
+
+
+@pytest.mark.anyio
+async def test_list_owner_only():
+    db, session = _make_db()
+    execute_result = MagicMock()
+    execute_result.scalars.return_value.all.return_value = []
+    session.execute = AsyncMock(return_value=execute_result)
+
+    await db.list_templates(owner_id="alice", include_builtin=False)
+    session.execute.assert_awaited_once()
+
+
+@pytest.mark.anyio
+async def test_list_builtin_only():
+    db, session = _make_db()
+    execute_result = MagicMock()
+    execute_result.scalars.return_value.all.return_value = []
+    session.execute = AsyncMock(return_value=execute_result)
+
+    await db.list_templates(owner_id=None, include_builtin=True)
+    session.execute.assert_awaited_once()
+
+
+@pytest.mark.anyio
+async def test_delete_nonexistent_returns_false():
+    db, session = _make_db()
+    execute_result = MagicMock()
+    execute_result.scalar_one_or_none.return_value = None
+    session.execute = AsyncMock(return_value=execute_result)
+
+    result = await db.delete_template("missing")
+    assert result is False
+
+
+@pytest.mark.anyio
+async def test_update_nonexistent_returns_none():
+    db, session = _make_db()
+    execute_result = MagicMock()
+    execute_result.scalar_one_or_none.return_value = None
+    session.execute = AsyncMock(return_value=execute_result)
+
+    result = await db.update_template("missing", name="new")
+    assert result is None