Art Style Inconsistency (Low-Poly vs High-Resolution Assets)

## Description
The game mixes low-poly models with high-resolution textures, which creates visual inconsistency. This becomes especially noticeable when the witch character appears, as it clashes with the rest of the environment.

## Expected Improvement
- Unify art style across all assets
- Adjust textures or models so they match the dominant visual direction
- Rework or replace the witch model to better fit the environment

## Notes
- Before the witch appears, the visual style is mostly consistent
- Decide early whether the target style is low-poly or high-detail and refactor accordingly

The issue mentions the witch character and environment assets. Start by examining the project's asset folders in Unity to identify low-poly models and high-resolution textures. Look for the witch model and compare it to other assets. 'Done' means all assets have a unified art style, which requires artistic decisions and potentially creating or sourcing new assets.

Written by the indexing model from the issue text.