A few client-side checks call their vendor directly instead of following
the configured base URL, so they fail on exactly the locked-down networks
Agent Network is built for while inference keeps working. Fast mode reports
a connectivity error, or reports itself disabled by the organization when
the agent holds only a proxy-issued token, and model discovery stays off
until it is turned on explicitly.
Name the variables that settle each case, and say plainly which ones
allowing direct egress does not fix.
