Use Pyright for typechecking

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (c696fdd) 94.45% compared to head (37812b7) 94.72%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #49 +/- ## ========================================== + Coverage 94.45% 94.72% +0.26% ========================================== Files 7 7 Lines 433 436 +3 ========================================== + Hits 409 413 +4 + Misses 24 23 -1 ```

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