Slim S-Pen Holder for Galaxy Fold 5 / 6, tweaked

Based on darkcrow101's original, this version has two main improvements:

1. It is lengthened slightly, with a small bump at the end to keep the pen from sliding out accidentally
2. The open end is tapered to reduce the fragility and sharpness of those corners

When I first printed this, it held the pen too tightly, but after running the pen perpendicularly along its length to stretch the sides out a bit, it now works perfectly. It doesn't slide out when I don't want it to, but pressing and pushing at the stylus end easily ejects it.