Put wrote the blob and then the sidecar. A full disk or a crash between
the two left bytes on disk with no sidecar, and List walks sidecars, so
Prune could never see them: Put returned an error and an image nobody
knew about became permanent. The sidecar goes first, a failed write is
rolled back, and Prune also collects blob files that have no readable
sidecar and are past retention, which picks up whatever an older build
leaked.
The per-blob cap bounds one call and nothing bounded their sum. Content
addressing does not help, because one flipped pixel is a different
digest, so 64 MiB per call and an unlimited number of calls fills the
disk mavend's database lives on. The store now carries a whole-store
budget, seeded from disk at open so a restart does not begin at zero.
Found in review of #72.
The only cap was 64 MiB of input, and a decode bomb is a small file. A
20000x20000 PNG of flat colour compresses to a few hundred kilobytes,
decodes to 400 million pixels, and flattenAndScale then allocated a
second buffer of the same dimensions before scaling anything. That is
3.2 GB of live heap from one request, on a laptop, in the process that
owns the database and the socket, and max_dim never got a chance to
help. The header is read first now and a source over forty megapixels is
refused. The scaler reads the source through At and allocates only the
destination, so flattening no longer doubles the peak.
Found in review of #72.
Vision needs a second model this box does not have, so the shipped half is
the part that works without one: an image arrives, is sniffed, is stored
content-addressed, and is prepared for inference. The describing half is
written and tested against a fake server, and refuses any endpoint that is
not on this box.
internal/media is the intake all three senses share — hearing and speaker
recognition store their audio in the same place under the same retention.
Blobs stay out of the sqlite store; only the derived text becomes a note,
and only when the caller asks. Retention is enforced by an hourly prune
loop rather than by a comment.
The plan's RemoteProvider step is refused: no cloud model, inference stays
on the box, and vision.NewLocal validates that at construction.
kami