Flask-Login's UserMixin provides is_active as a read-only property.
Attempting to set it as an instance attribute caused a conflict.
Solution:
- Store active status in private attribute _is_active
- Override is_active property to return custom value
- Update to_dict() to use _is_active
This allows proper Flask-Login integration while maintaining
custom active status tracking.
Bug found during login testing: AttributeError when calling
User.get_by_username() which triggered from_dict() → __init__().
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Co-Authored-By: Claude <noreply@anthropic.com>
gurixandClaude
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