An app's manifest can list files beside its code as one quoted string,
"files":"beep.wav,track.mp3" (the manifest reader takes strings only). The
Store installs each into /apps/<id>.d/, the folder wada.fs and
wada.audio.play("beep.wav") already read, so an app can carry its sounds. On
the T-Display P4, whose Lua SD API is off, that was the only way to get a sound
there (#lua-app-dev). Files stream to storage through a 4 KB internal buffer
(SD writes from PSRAM come back short), the server must send a length, a
short read deletes the partial file and fails the install. Up to 8 files of
4 MB, names as wada.audio's. No app uses it yet, so existing installs are
unchanged. SDK page documents it.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
