🧹 Refactor NewPostProcessor to use a dataclass

[marko1olo]

🎯 What: The code health issue addressed is 'Too Many Parameters' in NewPostProcessor. Refactored to use NewPostContext dataclass.
💡 Why: This improves maintainability and readability by explicitly defining the parameters in a structured object instead of passing 7 arguments positionally.
✅ Verification: Verified by compiling the script python3 -m py_compile main.py and running test suite.
✨ Result: Improved code health by removing the 'Too Many Parameters' issue while maintaining backward compatibility and functionality.

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PR created automatically by Jules for task 1810037359057258510 started by @marko1olo

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