Manual import used request.formData(), which buffers the whole body and caps out
around ~15MB — a real FLAC album is hundreds of MB (Hollywood's Bleeding is
584MB), so it failed with "expected multipart form data". Now the multipart body
is STREAMED with busboy: each file pipes straight to a hidden .import-<uuid>
staging dir on the library filesystem, then the dir is atomically renamed into
place. No full-body buffering, no size cap. Cleaned up on any failure; guards
(400 missing fields/audio, 409 exists) unchanged. web 161 tests.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Jonathan