Issue : Missing `from __future__ import annotations`

```
It's good practice to include `from __future__ import annotations` in files that use type hints extensively, especially with forward references. This ensures that the code will behave as expected in older versions of Python where annotations are evaluated differently.
```

No files, tests, or entry points are named. Inspect the repository's Python files for extensive type hints and forward references, then determine the intended scope of the imports; the work is done when the applicable files consistently include the requested future import without changing their behavior.

Written by the indexing model from the issue text.