Each generated folder must contain include/mpv/client.h and runtime-manifest.json. Platform runtime/build inputs live under lib/ or bin/. In particular, linux-x64/lib/ contains the pinned, dynamically linked LGPL-compatible libmpv closure used to link the out-of-process frame-copy helper. The binary runtime directories are ignored by git; generate, stage, or restore them before building the Electron backend.

Linux package profiles consume that one staged x64 source runtime differently:

DEB/RPM/Pacman remove the private closure and declare the system libmpv dependency.
AppImage/Snap/Flatpak retain the manifest-declared closure under app.asar.unpacked/electron-backend/native/lib/.
Non-x64 Linux packages retain no native artifacts and ship only the unavailable marker.

Only iptvnator_mpv_helper may link libmpv. Electron, embedded_mpv.node, and embedded_mpv_frame_reader.node must remain free of direct libmpv dependencies. See tools/embedded-mpv/README.md and docs/architecture/embedded-mpv-native.md.