Function handleScanHostUpdate

web/scripts/ragnar_modern.js:3439–3489

(data)

                else _wifiHmPersistWalls();
            }
            _wifiHm.suppressClick = true;   // swallow the click that follows this press
            _wifiHm.drag = null; cv.style.cursor = '';
            try { cv.releasePointerCapture(e.pointerId); } catch (_) {}
            wifiHeatmapRender();
        };
        cv.addEventListener('pointerup', endDrag);
        cv.addEventListener('pointercancel', endDrag);
    }
}

function wifiThroughputTest() {
    const st = document.getElementById('wifi-hm-tp-status');
    const iperf = (document.getElementById('wifi-hm-iperf').value || '').trim();
    const secs = parseInt(document.getElementById('wifi-hm-tp-secs').value) || 5;
    st.textContent = 'Testing (~' + (iperf ? secs * 2 + 5 : secs + 3) + 's)…';
    fetch('/api/net/wifi/heatmap', { method: 'POST', headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ action: 'throughput', iperf_server: iperf, seconds: secs }) })
        .then(r => r.json()).then(d => {
            const dn = d.down_mbps != null ? d.down_mbps + '↓' : '—';
            const up = d.up_mbps != null ? ' ' + d.up_mbps + '↑' : '';
            const lat = d.latency_ms != null ? ` · ${d.latency_ms}ms` : '';
            const loss = d.loss_pct ? ` · ${d.loss_pct}% loss` : '';
            st.innerHTML = `<b>${dn}${up}</b> Mbps${lat}${loss} <span class="text-gray-600">(${d.method})</span>`
                + (d.error ? ` <span class="text-amber-400">⚠ ${d.error}</span>` : '');
        }).catch(() => { st.textContent = 'test failed'; });
}

// ---- Design / predictive coverage ------------------------------------------
function wifiHmSetMode(m) {
    _wifiHm.mode = m;
    const survey = m === 'survey';
    document.getElementById('wifi-hm-mode-survey').className =
        'wifi-hm-seg-btn ' + (survey ? 'wifi-hm-seg-on' : 'wifi-hm-seg-off');
    document.getElementById('wifi-hm-mode-design').className =
        'wifi-hm-seg-btn ' + (!survey ? 'wifi-hm-seg-on' : 'wifi-hm-seg-off');
    document.getElementById('wifi-hm-design-tools').classList.toggle('hidden', survey);
    _wifiHm.wallStart = null;
    wifiHeatmapRender();
}

function wifiHmSetTool(t) {
    _wifiHm.tool = t;
    _wifiHm.wallStart = null;
    const sel = (id, on) => { const el = document.getElementById(id); if (el)
        el.className = 'wifi-hm-seg-btn ' + (on ? 'wifi-hm-seg-on' : 'wifi-hm-seg-off'); };
    sel('wifi-hm-tool-wall', t === 'wall');
    sel('wifi-hm-tool-ap', t === 'ap');
    sel('wifi-hm-tool-column', t === 'column');
    const st = document.getElementById('wifi-hm-design-status');
    const msg = { wall: 'Click two points to draw a wall — or drag an existing wall to move it.',
        ap: 'Click the plan to drop an AP node (add several for a mesh) — or drag a node to move it.',
        column: 'Click to drop a structural column (pillar) — drag it to move, or drag its white edge handle to resize. Columns shadow WiFi behind them.' };
    if (st) st.textContent = msg[t] || '';
}