chore: make codebase pass ruff 0.16

[M03ED]

Summary

Type of change

• Bug fix
• New feature
• Breaking change
• Refactor / cleanup
• Documentation
• Tests / CI

Checklist

• I tested the change locally or explained why it cannot be tested.
• I added or updated tests for behavior changes.
• I updated documentation, translations, or examples if needed.
• I checked database migrations when models or schema changed.
• I did not include secrets, tokens, private keys, or unrelated changes.

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Review skipped

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Review profile: CHILL

Plan: Pro Plus

Run ID: 45f15cea-8c15-4b99-b9b0-0ee165bfdd33

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch ruff-format

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