Implement flexible order status management system

Features:
- Created OrderStatus model for managing statuses per tenant
- Added system-level statuses: draft, new, confirmed, in_assembly, in_delivery, completed, return, cancelled
- Implemented CRUD views for managing order statuses
- Created OrderStatusService with status transitions and business logic hooks
- Updated Order model to use ForeignKey to OrderStatus
- Added is_returned flag for tracking returned orders
- Updated filters to work with new OrderStatus model
- Created management command for status initialization
- Added HTML templates for status list, form, and confirmation
- Fixed views.py to use OrderStatus instead of removed STATUS_CHOICES

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>

.claude/settings.local.json

@@ -4,7 +4,8 @@
       "Bash(dir /b /s settings.py)",
       "Bash(git add:*)",
       "Bash(..venvScriptspython.exe manage.py check)",
-      "Bash(python:*)"
+      "Bash(python:*)",
+      "Bash(dir:*)"
     ],
     "deny": [],
     "ask": []