Function handleHeadlessMode

web/scripts/ragnar_modern.js:7206–7231

* Detect and handle headless mode (server installations without a display) * Headless mode hides display-related UI elements

()

            <td class="px-2 py-1 font-mono ${r.virtual ? 'text-gray-500' : 'text-gray-200'}">${escapeHtml(r.iface)}</td>
            <td class="px-2 py-1">${badge}</td>
            <td class="px-2 py-1 font-mono ${red(r.accept_redirects)}">${r.accept_redirects}</td>
            <td class="px-2 py-1 font-mono ${red(r.accept_ra_rtr_pref)}">${r.accept_ra_rtr_pref}</td>
            <td class="px-2 py-1 font-mono text-gray-400">${r.accept_ra}</td>
        </tr>`;
    };
    if (rows.length) {
        html += '<table class="min-w-full text-xs text-gray-300 whitespace-nowrap"><thead>' +
            '<tr class="text-left text-gray-500"><th class="px-2 py-1">Interface</th><th class="px-2 py-1">Grade</th><th class="px-2 py-1">accept_redirects</th><th class="px-2 py-1">rtr_pref</th><th class="px-2 py-1">accept_ra</th></tr>' +
            '</thead><tbody>' + phys.map(fmt).join('');
        if (virt.length) {
            html += `<tr class="border-t border-slate-800"><td colspan="5" class="px-2 py-1"><button onclick="this.nextElementSibling.style.display=this.nextElementSibling.style.display==='none'?'':'none'" class="text-cyan-400 underline text-xs">${virt.length} virtual/container interface(s) ▸</button><span style="display:none"></span></td></tr>`;
            html += '<tr style="display:none" class="virt-rows"><td colspan="5" class="p-0"><table class="min-w-full text-xs"><tbody>' + virt.map(fmt).join('') + '</tbody></table></td></tr>';
        }
        html += '</tbody></table>';
    }
    const gws = d.gateways || [];
    if (gws.length) {
        html += '<p class="text-xs text-gray-500 mt-2">Accepted IPv6 gateway(s): ' +
            gws.map(g => `<span class="font-mono text-gray-300">${escapeHtml(g.gw)}</span> dev ${escapeHtml(g.dev)}${g.from_ra ? ' <span class="text-amber-300">(from RA)</span>' : ''}`).join(', ') + '</p>';
    }
    if (d.reasons && d.reasons.length) {
        html += '<ul class="text-xs text-gray-400 mt-2 list-disc pl-5">' +
            d.reasons.map(r => '<li>' + escapeHtml(r) + '</li>').join('') + '</ul>';
    }
    if (d.needs_hardening && !d.applied) {
        html += '<p class="text-xs text-amber-300 mt-2">Click <strong>Harden host</strong> to close these (sets accept_redirects=0 and accept_ra_rtr_pref=0; leaves accept_ra alone).</p>';
    }
    if (d.advisories && d.advisories.length) {
        html += '<ul class="text-xs text-cyan-400/80 mt-2 list-disc pl-5">' +