ASHLIN-JOHN/singlepassdrone3d ? reverse-engineered prompt

Build me a working Python project for a simple 3D drone style app or tool that can run from the main script and has a small viewer so I can inspect the result visually.

I want it to be organized cleanly with code, tests, config, data, models, and output folders, and I want the project to actually run without me having to figure out missing pieces. If there are any dependencies or setup steps needed, please make them easy to follow, and if anything is unclear from the existing files, use sensible defaults and keep it lightweight.

The goal is that I can launch it, load whatever sample data or model files are included, and see the output in a simple viewer. Please also make sure the code is tidy, the main entry point works, and basic tests are in place so I can tell it’s functioning. If you need to look up current docs online for anything, go ahead and do that.