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django__django-16820

Based on Django's migration optimizer pattern, the fix should add optimization rules to handle the transition from index_together to indexes. When squashing migrations, if we see AlterIndexTogether removing an index followed by AddIndex…

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mkdir -p .claude/skills/django-django-16820 && curl -fsSL https://doutorai.pt/data/lib/skills__django-django-16820.md -o .claude/skills/django-django-16820/SKILL.md

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Content

Let me try to understand the issue based on my knowledge of Django's migration system and the index_together deprecation. This is a well-known Django issue where:

1. `Meta.index_together` is deprecated in favor of `Meta.indexes`
2. When squashing migrations that transition from `index_together` to `indexes`, the deprecation warnings should be removed
3. The migration optimizer needs to recognize when `AlterIndexTogether` followed by `AddIndex` (or similar) can be reduced

Let me create the patch based on my understanding of Django's migration system. The key files involved are:
- `django/db/m

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