Web UI, packaging, systemd units, installer scripts, namespace integration tests

React/TS analyser (virtualised packet list, protocol tree, verified hex mapping),
setup wizard, network/devices/health/library/settings pages. Installer with
backup and rollback, uninstall/repair/diagnose. Docker+netns integration suite
covering DHCP, DNS, NAT, isolation, IPv6 blocking, capture and export.

.gitignore

@@ -3,3 +3,5 @@
 /web/dist/*
 !/web/dist/.gitkeep
 *.test
+*.test
+/.testbin/