Use custom devcontainer images with unexpected python instalations

The uv setup relies on the standard devcontainer image which comes with the repo. If attempting to switch image, the default uv integration fails.

Resolved by clearing existing uv setup and installing fresh, then using `$ uv venv --seed --system-site-packages` to create the venv. Run programs with `$ uv run python /workspaces/path_to_file/file.py`.

Start by reproducing the uv setup with a custom devcontainer image and compare it with the repository's standard image. Verify the existing uv setup can be cleared and recreated with `uv venv --seed --system-site-packages`, then confirm programs run through `uv run python`.

Written by the indexing model from the issue text.