Management command deprecation pattern

Arthexis no longer ships runtime shims for deprecated management commands. When a command is absorbed into a newer surface, keep the compatibility guidance in documentation and release notes instead of importing transitional helpers at runtime.

Minimal migration note template

Use a short mapping table in docs/changelog content so operators can update automation scripts:

Removed command Replacement
python manage.py old_command [args...] python manage.py new_command [args...]
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