The Network permission's Settings label promises 'no IP addresses', and the
browser-side broker honours it — but the node-side tool forwarded
network.diagnostics verbatim, so a granted Network category sent the node's
WAN IP and SSID (both location-identifying) to cloud model backends. Strip
both at the tool boundary; NAT/UPnP/Tor/DNS connectivity shape stays.
Pure helper + unit test (123 assistant tests green).
Co-Authored-By: Claude <noreply@anthropic.com>