Taildrop pitfalls: false success and iOS jetsam
Sending files to your phone can say 'sent' when it wasn't, and big files can knock the phone off the network.
how it works
`tailscale file cp` exits 0 on failed delivery and offline phones look present; iOS network-extension memory floor grows with uptime, so toggle Tailscale before big transfers.
Technique: A pattern or hard-won lesson, written down so it isn't learned twice.
The code for this one lives in a private repo. This page explains the idea so you can build your own.