Verdict: solid, mergeable. The networking rework is internally consistent, the regression-safety claim holds, and all four prior Copilot comments are addressed. The substantive risk is entirely in the real-apply assumptions the PR already calls out — below I rank them and add one operational footgun worth documenting before qa-mke wires this up.
I verified everything below locally on the branch (terraform fmt -check, terraform validate, and terraform console renders of the actual templates).
