Lightweight mode — only TX ID (64 chars) needed. TX JSON stays on your main device.
Sign transfer request off-chain — no PRIVA needed. Copy JSON to main device to submit via privasc0785e114a6b512a109dcfeb897195af4
gscm-cli call --addr privasc0785e114a6b512a109dcfeb897195af4 --method sponsor_transfer --args "$(cat output.json)"