Caddy's certmagic creates storage dirs with hardcoded 0700 permissions,
making the web container's supplementary group membership ineffective.
Rather than working around this with ACLs or chmod hacks, remove the
feature entirely — it was cosmetic (issuer/expiry display) for certs
that Caddy auto-manages anyway.
Also bump access list dropdown timeout from 5s to 10s to fix flaky E2E test.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
b9a88c4330