1HenrikGharagyozyan/Hydra — reverse-engineered prompt

Build me a working first version of this Hydra project as a Linux native C++ rendering engine with a simple editor app and a sandbox app I can launch.

I want the repo set up so I can clone it with submodules, run the setup script, generate project files, compile everything, and open the editor without guessing at missing steps. Keep it aligned with the current README, so focus on the existing foundation instead of big future ideas. Make sure the Vulkan rendering path, shader compilation flow, command line argument handling, and the recent rendering work are wired up cleanly enough to show something on screen.

If parts are still stubbed or half done, fill in the gaps in the most practical way while keeping the code clean and easy to extend later. Please also make the Linux setup smooth for Ubuntu or Debian, including any fixes to scripts, build flow, and launch steps so a normal person can get from a fresh machine to a running editor without hassle. Look up current docs online if you need to.