B1: Fix duplicate __all__ in models/__init__.py — merged into single block with all models, no duplicates

app/models/__init__.py

@@ -1,48 +1,21 @@
 """SQLAlchemy models for LeoCRM."""
 
+from app.models.ai_conversation import AIConversation, AIMessage
+from app.models.attachment import Attachment
 from app.models.audit import AuditLog, DeletionLog
 from app.models.auth import ApiToken, PasswordResetToken
 from app.models.company import Company
 from app.models.contact import CompanyContact, Contact
 from app.models.currency import Currency
-from app.models.tax import TaxRate
-from app.models.sequence import Sequence
-from app.models.system_settings import SystemSettings
-from app.models.attachment import Attachment
 from app.models.notification import Notification
 from app.models.plugin import Plugin, PluginMigration
 from app.models.role import Role
+from app.models.sequence import Sequence
 from app.models.session import Session
+from app.models.system_settings import SystemSettings
+from app.models.tax import TaxRate
 from app.models.tenant import Tenant
 from app.models.user import User, UserTenant
-
-__all__ = [
-    "Tenant",
-    "User",
-    "UserTenant",
-    "Role",
-    "Session",
-    "AuditLog",
-    "DeletionLog",
-    "Notification",
-    "PasswordResetToken",
-    "ApiToken",
-    "Company",
-    "Contact",
-    "CompanyContact",
-    "Currency",
-    "TaxRate",
-    "Sequence",
-    "SystemSettings",
-    "Attachment",
-    "Attachment",
-    "SystemSettings",
-    "Sequence",
-    "TaxRate",
-    "Plugin",
-    "PluginMigration",
-]
-from app.models.ai_conversation import AIConversation, AIMessage
 from app.models.workflow import Workflow, WorkflowInstance, WorkflowStepHistory
 
 __all__ = [
@@ -60,6 +33,10 @@ __all__ = [
     "Contact",
     "CompanyContact",
     "Currency",
+    "TaxRate",
+    "Sequence",
+    "SystemSettings",
+    "Attachment",
     "Plugin",
     "PluginMigration",
     "AIConversation",