* fix(e2e): resolve the listener inventory without a Go toolchain on the target node
tests/e2e/multinode/listener_invariant_test.go resolved
docs/security/network-connections/README.md at runtime via `go env
GOMOD`, which works under `go test` but not inside a compiled .test
binary shipped to a node with no Go toolchain. Embed the doc in a new
docs/security/network-connections package instead, so the content is
compiled into the binary and every caller parses bytes rather than a
resolved path. RepoRoot and DocPath are now unused and removed.
* docs: trim the embed package comment to the three-line standard
Josh Siviour