After migrating base image from Alpine to Debian Trixie (PR #550),
integration test scripts were using wget-style options with curl
that don't work correctly on Debian.
Changed curl -q -O- (wget syntax) to curl -sf (proper curl):
waf_integration.sh
cerberus_integration.sh
rate_limit_integration.sh
crowdsec_startup_test.sh
install-go-1.25.5.sh
Also added future phase to plan for Playwright security test helpers
to prevent ACL deadlock issues during E2E testing.
Refs: #550
