- Replace left_joins with includes in auto-join queries for better performance
- Remove complex after_initialize callback since includes handles association loading
- Add automatic includes to find method for consistent behavior
- Add comprehensive performance tests with query counting
- Fix Sorbet type checking by adding ActiveSupport::Notifications to todo.rbi
Performance improvements:
- where() queries now use single query with includes
- N+1 queries avoided for multiple record loading
- All query methods (find, find_by, where) now optimized
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