feat: hide IP addresses by default, click to reveal

Added maskIp() helper that replaces IPs with ••••••••. A global
delegated click handler reveals the address on click. Applied to:
- Player list 'Address' column
- Player info 'Address' field

Styled .ip-masked with dimmed text and purple hover glow.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

js/pages/playerlist.js

@@ -84,7 +84,7 @@ function PlayerListPage(params, container) {
           '<td><a href="#/' + address + '/player/' + p.SteamID + '/">' + (p.DisplayName || '') + '</a></td>' +
           '<td class="text-end"><a href="#/' + address + '/player/' + p.SteamID + '/">' + p.SteamID + '</a></td>' +
           '<td class="text-end"' + fadeClass + '>' + (p.VoiationLevel || 0) + '</td>' +
-          '<td class="text-end">' + (p.Address || '') + '</td>' +
+          '<td class="text-end ip-cell">' + maskIp(p.Address) + '</td>' +
           '<td class="text-end">' + (p.Ping || 0) + '</td>' +
           '<td class="text-end">' + secondsToDuration(p.ConnectedSeconds || 0) + '</td>' +
         '</tr>';