Avoids HTTPS-over-lossy-link TCP cwnd issues that pinned the previous
push to ~360 KB/s for 10 min on the batch-50 Step 3-4 commit. SSH key
generated on dev1 (~/.ssh/id_ed25519), public key posted to gitea via
/api/v1/user/keys (title "dev1-guangzhou"), origin URL updated to
ssh://git@git.deepknow.site:222/Facere/FacereDataset.git.
Also documents the kernel + git side optimizations applied:
sysctl net.ipv4.tcp_congestion_control=bbr (was cubic)
git config --global http.postBuffer 524288000 (500 MB)
Note: gitea git SSH port is 222, not 22 (22 is the host sshd).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>