[Bug]: Improve the Clustering Logic

[marcdhi]

• The existing code in traverse_file.py demonstrates functionality for generating different prompts based on the context. While it generally works well, there are instances where it crashes, causing instability.

https://github.com/LPE-Labs/reDocs.ai/blob/37853fa4de0defbdd6d7cf7c7b0716cb35f015a7/server/app/utils/traverse_file.py#L113-L117