Add a TollGate row (Enabled/Disabled/Not installed) to the Home
dashboard's Network tile, polling the existing openwrt.get-status RPC
on the same cadence as the other network rows. Only rendered once an
OpenWrt router is actually configured, so nodes without one aren't
cluttered with an always-"Not configured" row.
Also fixes the underlying reason this could never have worked: nothing
in the OpenWrt Gateway flow ever persisted the router's host/credentials
server-side — the "connect" form only kept them in local component
state, so any no-args openwrt.get-status call (this new tile, and even
the Gateway page's own reload) always failed with "No router
configured" despite a fully working, provisioned router. Now
handle_openwrt_get_status saves the connection to router_config.json
whenever a host is explicitly passed in and the connection succeeds.
ssmithx
e497f8fed1