egress_entrypoint.sh is the mitmdump launcher for the egress data plane,
so it belongs with the gateway egress service, not at the package root.
Moved to bot_bottle/gateway/egress/entrypoint.sh (prefix stripped now
that the package namespaces it).
Only the Dockerfile.gateway COPY source changes; the runtime target
(/app/egress-entrypoint.sh, referenced by bootstrap's egress DaemonSpec)
is unchanged, and the infra images inherit it via FROM gateway. Updated
the test that resolves the script path and the infra-artifact docstring
example. Full unit suite green (2243).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
