fix: Dashboard and NetworkServices use live domain/cell_name from ConfigContext

- Dashboard: SERVICES array (Cell Home, Calendar, Files, Webmail) now builds
  URLs from useConfig() domain + cell_name instead of hardcoded 'mycell.cell'
- NetworkServices: imports useConfig() and cellAPI; shows current DNS zone and
  DHCP range in page header; fetches service_configs.network to display
  configured DHCP range and NTP servers alongside live operational data

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

webui/src/pages/Dashboard.jsx

@@ -1,12 +1,12 @@
 import { useState, useEffect } from 'react';
 import { useNavigate } from 'react-router-dom';
-import { 
-  Server, 
-  Users, 
-  Shield, 
-  Mail, 
-  Calendar, 
-  FolderOpen, 
+import {
+  Server,
+  Users,
+  Shield,
+  Mail,
+  Calendar,
+  FolderOpen,
   Wifi,
   Activity,
   CheckCircle,
@@ -17,16 +17,17 @@ import {
   RotateCcw
 } from 'lucide-react';
 import { cellAPI, servicesAPI } from '../services/api';
-
-const SERVICES = [
-  { name: 'Cell Home',   url: 'http://mycell.cell',    desc: 'Main UI — no login needed' },
-  { name: 'Calendar',    url: 'http://calendar.cell',  desc: 'Login: your WireGuard username' },
-  { name: 'Files',       url: 'http://files.cell',     desc: 'Login: admin / admin123' },
-  { name: 'Webmail',     url: 'http://mail.cell',      desc: 'Login: admin@rainloop.net / 12345' },
-];
+import { useConfig } from '../contexts/ConfigContext';
 
 function Dashboard({ isOnline }) {
   const navigate = useNavigate();
+  const { domain = 'cell', cell_name = 'mycell' } = useConfig();
+  const SERVICES = [
+    { name: 'Cell Home', url: `http://${cell_name}.${domain}`,   desc: 'Main UI — no login needed' },
+    { name: 'Calendar',  url: `http://calendar.${domain}`,       desc: 'Login: your WireGuard username' },
+    { name: 'Files',     url: `http://files.${domain}`,          desc: 'Login: admin / admin123' },
+    { name: 'Webmail',   url: `http://mail.${domain}`,           desc: 'Login: admin@rainloop.net / 12345' },
+  ];
   const [cellStatus, setCellStatus] = useState(null);
   const [servicesStatus, setServicesStatus] = useState(null);
   const [isLoading, setIsLoading] = useState(true);