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/__init__.py

@@ -0,0 +1,150 @@
+"""
+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.database import Base
+from .organization import Organization
+from .user import User
+from .fcm_token import FCMToken
+from .auth_session import AuthSession
+from .customer import Customer
+from .role import Role
+from .permission import Permission
+from .ai_config import AIConfig, AIModelType
+from .agent import Agent
+from .knowledge_to_agent import KnowledgeToAgent
+from .knowledge import Knowledge
+from .chat_history import ChatHistory
+from .session_to_agent import SessionToAgent, SessionStatus
+from .rating import Rating
+from app.models.jira import JiraToken
+from app.models.shopify import ShopifyShop
+from app.models.workflow import Workflow
+from app.models.workflow_node import WorkflowNode, ExitCondition
+from app.models.workflow_connection import WorkflowConnection
+from app.models.mcp_tool import MCPTool, MCPToolToAgent, MCPTransportType
+from app.models.file_attachment import FileAttachment
+from app.models.customer import LeadStage
+from app.models.lead_capture import (
+    LeadCaptureConfig, LeadCaptureResponse,
+    LeadAssignmentMode, CrmSyncTarget,
+)
+from app.models.channels import (
+    ChannelAccount, ChannelType, ChannelConversation, AgentChannelConfig,
+)
+from app.models.faq_generation_job import (
+    FAQGenerationJob, FAQJobType, FAQJobStatus, FAQJobStage,
+)
+from app.models.faq import FAQ, FAQStatus
+from app.models.help_center import (
+    HelpCenterSettings, HelpCenterQuery, DomainStatus, SSLStatus,
+)
+from app.models.ticket import (
+    Ticket, TicketSequence, TicketSession,
+    TicketStatus, TicketPriority, TicketSource, ResolutionOutcome,
+)
+from app.models.ticket_activity import TicketActivity, TicketActivityType, TicketActorType
+from app.models.ticket_settings import OrganizationTicketSettings
+from app.models.investigation import (
+    InvestigationRun, InvestigationRunType, InvestigationRunStatus, InvestigationTrigger,
+    InvestigationHypothesis, InvestigationEvent, RCADocument, TicketProposal,
+)
+from app.models.ticket_db_connector import TicketDBConnector, DBConnectorAuditLog
+from app.models.crm import (
+    CrmConnection, CrmSyncJob, CrmCustomerSync,
+    CrmProvider, CrmConnectionStatus, CrmSyncJobStatus,
+)
+from app.models.notification_settings import UserNotificationSettings
+from app.models.guardrail_event import GuardrailEvent
+
+
+
+# This ensures all models are imported in the correct order
+__all__ = [
+    "Organization",
+    "User",
+    "FCMToken",
+    "AuthSession",
+    "Customer",
+    "Permission",
+    "Role",
+    "AIConfig",
+    "AIModelType",
+    "Agent",
+    "KnowledgeToAgent",
+    "Knowledge",
+    "ChatHistory",
+    "SessionToAgent",
+    "SessionStatus",
+    "Rating",
+    "JiraToken",
+    "ShopifyShop",
+    "Workflow",
+    "WorkflowNode",
+    "ExitCondition",
+    "WorkflowConnection",
+    "MCPTool",
+    "MCPToolToAgent",
+    "MCPTransportType",
+    "FileAttachment",
+    "LeadStage",
+    "LeadCaptureConfig",
+    "LeadCaptureResponse",
+    "LeadAssignmentMode",
+    "CrmSyncTarget",
+    "ChannelAccount",
+    "ChannelType",
+    "ChannelConversation",
+    "AgentChannelConfig",
+    "FAQGenerationJob",
+    "FAQJobType",
+    "FAQJobStatus",
+    "FAQJobStage",
+    "FAQ",
+    "FAQStatus",
+    "HelpCenterSettings",
+    "HelpCenterQuery",
+    "DomainStatus",
+    "SSLStatus",
+    "Ticket",
+    "TicketSequence",
+    "TicketSession",
+    "TicketStatus",
+    "TicketPriority",
+    "TicketSource",
+    "ResolutionOutcome",
+    "TicketActivity",
+    "TicketActivityType",
+    "TicketActorType",
+    "OrganizationTicketSettings",
+    "UserNotificationSettings",
+    "InvestigationRun",
+    "InvestigationRunType",
+    "InvestigationRunStatus",
+    "InvestigationTrigger",
+    "InvestigationHypothesis",
+    "InvestigationEvent",
+    "RCADocument",
+    "TicketProposal",
+    "TicketDBConnector",
+    "DBConnectorAuditLog",
+    "CrmConnection",
+    "CrmSyncJob",
+    "CrmCustomerSync",
+    "CrmProvider",
+    "CrmConnectionStatus",
+    "CrmSyncJobStatus",
+    "GuardrailEvent",
+]