The mock server now correctly implements the newline-delimited JSON protocol observed in the Hyperion server and client code.
- It properly parses incoming JSON streams line-by-line.
- It creates QImage objects from the raw RGB data using the dimensions provided in the JSON payload.
- It sends a success reply to the client after receiving an image.
- This commit also updates lessons_learned.md with key findings from the debugging session.
- Remove all X11-related code and dependencies.
- Create a mock Hyperion server for testing.
- Refactor the main application to be Wayland-only.
- Update the build system and documentation.
