370 MB -> 17 MB without losing quality

First wasm bundle I built was a clean 370 MB. A piano sample is a 10 s stereo 44.1 kHz WAV and we ship one per key. Not quite portfolio material :upsidedown:

How I got to 17 MB:

• Subset preload. bash + jq script reads each track's notes, picks only the sampler slots actually used. ~70 samples -> 19
• Trim length. Source samples are 10 s sustained notes, but the sampler has its own release envelope. Tail past 2 s is wasted bytes. Wrote a 30-line host C tool using the engine's own wav_read_mono_f32
• Mono on disk. The sampler downmixes anyway. Halve the bytes for free
• FLAC: aborted. miniaudio decodes FLAC but only encodes WAV, and ffmpeg isn't on the build host. Not worth vendoring libFLAC for 6 MB

Loads in a few seconds even on 4G. Good enough :)