- _build_acl_block: put all blocked IPs for a service in ONE acl block instead
of one block per peer — the first block's allow-all was silently granting
access to every peer after the first blocked one (first-match semantics)
- generate_corefile: add 'reload' plugin so SIGUSR1 triggers Corefile reload
in newer CoreDNS builds (without it the signal was a no-op)
- tests/test_firewall_manager.py: new tests for single merged ACL block and
the reload directive
- tests/e2e/api/test_peer_access_update.py: e2e tests for service_access,
internet_access, and peer_access updates persisting live to iptables/CoreDNS
- tests/e2e/api/test_cell_to_cell.py: e2e tests for cell-to-cell connection
management, permissions API, and cross-cell service access restrictions
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
