Summary

ListExternalNetworks bypasses the normal paginated Neutron helpers and performs a one-shot raw GET against ?router:external=true. That silently truncates results on larger deployments.

Evidence

• src/internal/network/networks.go:329-352 uses client.Get() with a raw query string instead of paginated iteration.
• Callers include src/internal/ui/routercreate/routercreate.go:494, src/internal/ui/fippicker/fippicker.go:274, and src/internal/ui/networkview/networkview.go:1316.

Impact

Users can miss external networks in router creation and floating-IP workflows once the deployment exceeds a single Neutron page.

Suggested fix

Switch to a paginated Neutron listing path and preserve the router:external=true filter across all pages.