OpenVapeCN/VapeV4.21 ? reverse-engineered prompt

Build me this Java recovery project so it compiles cleanly and produces the same kind of artifacts described in the README.

I want a Gradle based Java 8 compatible build that can restore the main app, package the resources, verify the fixed baseline jar hash, and generate a self contained injection jar. Please also make the Windows x64 native bridge build work with a DLL and a small injector exe, and have it bundle the Java payload inside the DLL like the README says.

Keep the checks that confirm the source count, the payload structure, and that the classes are loadable on Java 8. If anything is missing or unclear, inspect the existing code and look up current docs online if you need to. I should be able to run the main build and the native bundle preparation commands from the README and get working output in the expected build folders.