The gateway and backend halves of `discovered_printers` are hand-synced, so
every hand-written example in this file agrees with whichever side wrote it -
which is exactly how the two ends of /ws/edge/v1 drifted into different
protocols before. A capture is the only thing that catches that.
This one came off a live LAN with a Bambu P1P and H2C on it, through the
gateway's own serde enum, with its fleet file pointed at an empty file so
nothing was filtered out. The addresses and the shape are as captured.
The two serials are placeholders of the captured shape. They identify
someone's physical hardware, no test depends on their value, and no other
fixture here carries one - so the real ones are not something to commit on
the owner's behalf.
