fix: remove ACME cert scanning to eliminate caddy-data permission issue (#88)

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>

docker-compose.yml

@@ -58,7 +58,6 @@ services:
       - caddy-manager-data:/app/data
       - geoip-data:/usr/share/GeoIP:ro,z
       - caddy-logs:/logs:ro
-      - caddy-data:/caddy-data:ro
     depends_on:
       caddy:
         condition: service_healthy