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/shopify/__init__.py

@@ -0,0 +1,29 @@
+"""
+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 app.models.schemas.shopify.shopify_shop import (
+    ShopifyShopBase,
+    ShopifyShopCreate,
+    ShopifyShopUpdate,
+    ShopifyShopInDB,
+    ShopifyShop,
+)
+from .agent_shopify_config import (
+    AgentShopifyConfigBase,
+    AgentShopifyConfigCreate,
+    AgentShopifyConfigUpdate,
+    AgentShopifyConfig
+) 

backend/app/models/schemas/shopify/agent_shopify_config.py

@@ -0,0 +1,60 @@
+"""
+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
+from datetime import datetime
+
+
+class AgentShopifyConfigBase(BaseModel):
+    """Base Shopify agent configuration schema."""
+    enabled: bool
+    shop_id: Optional[str] = None
+
+
+class AgentShopifyConfigCreate(AgentShopifyConfigBase):
+    """Schema for creating a new Shopify agent configuration."""
+    agent_id: str
+
+
+class AgentShopifyConfigUpdate(AgentShopifyConfigBase):
+    """Schema for updating a Shopify agent configuration."""
+    pass
+
+
+class ShopifyShopInfo(BaseModel):
+    """Basic info about a Shopify shop."""
+    id: str
+    shop_domain: str
+    
+    class Config:
+        orm_mode = True
+
+
+class AgentShopifyConfigInDB(AgentShopifyConfigBase):
+    """Schema for Shopify agent configuration stored in the database."""
+    id: str
+    agent_id: str
+    created_at: datetime
+    updated_at: datetime
+
+    class Config:
+        orm_mode = True
+
+
+class AgentShopifyConfig(AgentShopifyConfigInDB):
+    """Schema for API response."""
+    shop: Optional[ShopifyShopInfo] = None 

backend/app/models/schemas/shopify/shopify_shop.py

@@ -0,0 +1,62 @@
+"""
+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, Field
+from typing import Optional
+from datetime import datetime
+from uuid import UUID
+
+class ShopifyShopBase(BaseModel):
+    """Base schema for ShopifyShop"""
+    shop_domain: str = Field(..., description="Shopify shop domain")
+    organization_id: Optional[str] = Field(None, description="ID of the organization this shop belongs to")
+
+class ShopifyShopCreate(ShopifyShopBase):
+    """Schema for creating a shopify shop"""
+    access_token: Optional[str] = Field(None, description="Shopify access token")
+    scope: Optional[str] = Field(None, description="Shopify OAuth scopes")
+    is_installed: bool = Field(False, description="Whether the app is installed on this shop")
+    oauth_state: Optional[str] = Field(None, description="CSRF protection state parameter")
+    oauth_state_expiry: Optional[datetime] = Field(None, description="CSRF protection state parameter expiry")
+
+class ShopifyShopUpdate(BaseModel):
+    """Schema for updating a shopify shop"""
+    access_token: Optional[str] = None
+    scope: Optional[str] = None
+    is_installed: Optional[bool] = None
+    organization_id: Optional[str] = None
+    oauth_state: Optional[str] = None
+    oauth_state_expiry: Optional[datetime] = None
+
+class ShopifyShopInDB(ShopifyShopBase):
+    """Schema for shopify shop from database"""
+    id: str
+    scope: Optional[str] = None
+    is_installed: bool
+    created_at: datetime
+    updated_at: datetime
+
+    class Config:
+        from_attributes = True
+        
+        # Add JSON encoders to convert UUID to string
+        json_encoders = {
+            UUID: str  # Convert UUID to string
+        }
+
+class ShopifyShop(ShopifyShopInDB):
+    """Schema for shopify shop response"""
+    pass