feat(models): 组织、用户、角色、客户、会话与消息模型

按组织边界定义数据关系，补齐仓储层与通用工具，迁移脚本可重复执行。

backend/app/models/schemas/jira.py

@@ -0,0 +1,32 @@
+"""
+Copyright 2024-2026 ChatterMate
+
+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 pydantic import BaseModel
+from typing import Optional, List, Any
+from app.models.schemas.agent import AgentResponse
+
+class AgentWithJiraConfig(AgentResponse):
+    """Model for agent data with Jira configuration."""
+    tools: Optional[List[Any]] = None
+    is_default: bool = False
+    jira_enabled: bool = False
+    jira_project_key: Optional[str] = None
+    jira_issue_type_id: Optional[str] = None
+    groups: List[Any] = []
+    organization: Optional[Any] = None
+    
+    class Config:
+        arbitrary_types_allowed = True