feat: add type hints and utility functions to db_manager.py

[ashrion]

Summary

Added comprehensive type hints to utils/db_manager.py and added two new utility functions.

Changes

• Added type hints to all function signatures and return types
• Added get_all_scores() to retrieve all scores for a game
• Added clear_scores() to clear scores for a game (useful for testing)
• Added from typing import List, Tuple import

How to Test

1. Run any game that uses high scores
2. Verify scores are saved and retrieved correctly
3. New functions can be imported: from utils.db_manager import get_all_scores, clear_scores

GSSoC 2026

[github-actions]

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