Creates a oneshot user service (converge-wake.service) that runs
converge --sync after the network is online, and a systemd-sleep hook
(/usr/lib/systemd/system-sleep/converge-wake) that triggers the service
for each logged-in user on resume.
Uses After=network-online.target for proper network timing on
NetworkManager/systemd-networkd setups, with a 5-second ExecStartPre
delay as a safety net for netctl and other environments where
network-online.target may not gate on resume.
Updated PKGBUILD and AGENTS.md accordingly.
