Phase 2 of PRD 0014. New module
claude_bottle/backend/docker/cred_proxy_apply.py:
- fetch_current_routes(slug): docker exec cat of the live
routes.json from the running cred-proxy sidecar.
- validate_routes_json(content): syntactic check before SIGHUP so
failures keep the old routes live and surface a clearer error
than 'reload failed' in the sidecar logs.
- apply_routes_change(slug, new): fetch current → validate new →
write to temp → docker cp into sidecar → docker kill --signal HUP.
Returns (before, after) so the caller can render a real audit diff.
- CredProxyApplyError: caller surfaces to operator without crashing
the dashboard.
docker exec / cp / kill paths are covered by the integration test
in Phase 5; unit tests here cover the validator.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
