Yellow music was still silent because the background worker thread loads
ChipSynth.lua in a fresh Lua state with no GameVersion/Platform context.
The main thread's prefix never reached it.
ChipAudio.slimAudio now resolves the versioned cache prefix on the main
thread and includes it in the audio payload as `programPrefix`.
ChipSynth.loadBanks prefers `audio.programPrefix` when present, falling
back to its own NX detection for the sync path. Blue and Yellow are
handled the same way.
Tests cover the worker prefix hand-off and Blue's programs.bin path.
Co-authored-by: Cursor <cursoragent@cursor.com>
Andrew Quenehen
bryanthaboi