- Managed hosts file (zz-dnsmasq-webui.hosts): app reads/writes only this;
addn-hosts in managed config loads it. SystemHostsPath is read-only display.
- Hosts page: editable managed file; then 'Other hosts (read-only)' (system
hosts when configured and !no-hosts, plus addn-hosts excluding managed).
- GET api/hosts/readonly for read-only files; no-hosts hides system hosts.
- HostsFileSection.razor component; fix space before read-only badge.
- Test harness: show container /etc/hosts (default SystemHostsPath).
- Config parsing/sources, tests and client updates for new hosts model.
- Static hosts: read dhcp-host from all config files; show external as read-only
with Source column; IsEditable + SourcePath on DhcpHostEntry; reject save if
managed entry duplicates MAC from another file (400 + message)
- Lease field: single input + datalist (type or select), remove Other dropdown
- MAC field: single input + datalist from current leases, TryFillFromLeaseByMac
- Add host: default Name=*, suggest next free IP from DHCP range
- Leases: configurable refresh polling; Settings modal for interval (client-side)
- DhcpHostsClient: surface 400 error body message on save failure
- App title config (ApplicationOptions), nav/layout/error/hosts tweaks
alex