Add the device->host WRITE half of the mota-seeder link so a device can capture
a .mota it is fetching off-mesh into the host folder (the same --dir used for
serving), stored as <mid>.mota — e.g. to grab an exact copy of a device's
firmware to build a delta against firmware you don't otherwise have.
- MotaSeederProto: OP_STAT / OP_BEGIN / OP_WRITE / OP_SREAD / OP_FIN (keyed by
mid). Resume needs no host bookkeeping: BEGIN 0xFF-fills the file; on reconnect
the device SREADs the leaves and re-requests only missing blocks (same as flash
resume). Partial = <midhex>.mota.part, published to <midhex>.mota on FIN.
- motatool `serve --dir <folder>` now also handles the storage ops on the same
folder/connection (SeederCore gains the store dir; serve_loop frames the
variable-length WRITE). Host round-trip test added.
Firmware side (FolderMotaStore + `ota pull <#> <dest>` + pause/resume) follows.
Valentin Kivachuk Burda
bd2ecb80a7