Address review feedback on the binary e2e suite:
- mocklapi: add an AppSec WAF stand-in (--appsec-addr) that blocks any URI
containing "rpc2" — the exact probe from examples/appsec-enabled — and allows
the rest. Lets the suite exercise the plugin's AppSec wiring (header
forwarding + allow/block enforcement) without the real CRS engine.
- new scenarios/appsec: benign request passes, /foo/rpc2 is 403.
- custom-ban-page: assert the banned response carries the custom remediation
header (remediationHeadersCustomName), per review.
- README: drop the "don't open issues / AppSec intentionally absent" framing;
describe what the suite actually covers, including AppSec wiring.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
