3355

Added

• Hatari (Atari ST) MIDIResponder — PVHatariCore now conforms to MIDIResponder, enabling the MIDI device picker UI for Atari ST games. Note On/Off, Control Change, Program Change, and Pitch Bend messages are encoded to raw MIDI bytes and injected into the libretro retro_midi_interface input ring buffer so the Hatari core receives them each frame
• pv_libretro_midi_inject_byte() — new C function in PVThinLibretroFrontend.mm that pushes a raw MIDI byte into the shared input ring buffer; thread-safe via s_midiRingLock serializing writes through thin_midi_ring_write_byte. Exposed via PVLibRetroCoreBridge -injectMIDIByte: for downstream libretro core bridges