Function scaleToPos

js/main.js:404–404

// ── Mesh diagnostics DOM refs ────────────────────────────────────────────────
const meshDiagnostics    = document.getElementById('mesh-diagnostics');
const meshDiagDismiss    = document.getElementById('mesh-diag-dismiss');
const meshDiagFast       = document.getElementById('mesh-diag-fast');
const meshDiagRunBtn     = document.getElementById('mesh-diag-run-btn');
const meshDiagSpinner    = document.getElementById('mesh-diag-spinner');