try{
name = String(name||'').trim().toLowerCase();
var all = loadCodes();
if(all[name]){ delete all[name]; saveCodes(all); status('forgot "'+name+'"'); }
else status('no code named "'+name+'"');
}catch(e){}
}
/* ================= NODE PICK (tap-a-block) ================= */
var picking = null; // {k}
function armNodePick(k){
try{
picking = {k:k};
// hide panel, show banner
if(panelEl) panelEl.style.display = 'none';
var b = document.createElement('div');
b.id = 'cb-pickbanner';
b.style.cssText = 'position:fixed;left:50%;bottom:90px;transform:translateX(-50%);z-index:30006;'
+'background:rgba(10,8,4,0.95);border:2px solid #d8a920;border-radius:12px;'
+'color:#ffd700;font-family:Georgia,serif;font-size:14px;padding:12px 16px;'
+'display:flex;gap:12px;align-items:center;';
b.innerHTML = 'TAP A BLOCK'
+'\u2715';
document.body.appendChild(b);
function cx(e){ try{ if(e){ e.preventDefault(); e.stopPropagation(); } }catch(x){} cancelPick(); }
var xel = document.getElementById('cb-pickx');
if(xel){ xel.addEventListener('touchstart', cx, {passive:false}); xel.addEventListener('mousedown', cx); }
document.addEventListener('touchstart', pickTap, true);
document.addEventListener('mousedown', pickTap, true);
}catch(e){ cancelPick(); }
}
function cancelPick(){
picking = null;
try{
document.removeEventListener('touchstart', pickTap, true);
document.removeEventListener('mousedown', pickTap, true);
var b = document.getElementById('cb-pickbanner');
if(b && b.parentNode) b.parentNode.removeChild(b);
if(panelEl) panelEl.style.display = '';
}catch(e){}
}
function pickTap(e){
try{
if(!picking) return;
var t = e.touches && e.touches.length ? e.touches[0] : e;
var sx = t.clientX, sy = t.clientY;
// ignore taps on our own UI
var tgt = e.target;
if(tgt && tgt.closest && (tgt.closest('#cb-pickbanner') || tgt.closest('#codeBuilderPanel'))) return;
var nid = raycastNode(sx, sy);
try{ if(e.cancelable) e.preventDefault(); }catch(x){}
try{ e.stopPropagation(); }catch(x){}
if(nid){
pendingVals[picking.k] = nid;
status('picked '+shortId(nid));
} else {
status('no block there — tap a block');
return; // stay armed
}
cancelPick();
renderBody();
}catch(e){ cancelPick(); }
}
function raycastNode(sx, sy){
try{
if(typeof THREE==='undefined' || !window.scene || !window.camera) return null;
var ndc = new THREE.Vector2((sx/window.innerWidth)*2-1, -(sy/window.innerHeight)*2+1);
var rc = new THREE.Raycaster();
rc.setFromCamera(ndc, window.camera);
var map = window.__nodeMap || {};
var objs = [];
for(var k in map){ try{ if(map[k] && map[k].obj) objs.push(map[k].obj); }catch(e){} }
if(!objs.length) return null;
var hits = rc.intersectObjects(objs, true);
if(hits && hits.length){
var o = hits[0].object;
var guard = 0;
while(o && guard < 12){
if(o.userData && o.userData.nodeId) return o.userData.nodeId;
o = o.parent; guard++;
}
}
return null;
}catch(e){ return null; }
}
/* ================= UI BUTTON ================= */
function makeUIButton(){
try{
if(document.getElementById('builderBtn')) return;
var b = document.createElement('div');
b.id = 'builderBtn';
b.innerHTML = '\u270E';
b.style.cssText = 'position:fixed;right:12px;bottom:270px;width:52px;height:52px;'
+'z-index:29999;background:radial-gradient(circle at 35% 30%, #ffe27a, #d8a920 55%, #8a6a1c);'
+'border:2px solid #ffe27a;border-radius:50%;color:#3a2a08;'
+'font-size:24px;display:flex;align-items:center;justify-content:center;'
+'box-shadow:0 0 16px rgba(216,169,32,0.5);cursor:pointer;'
+'-webkit-tap-highlight-color:transparent;user-select:none;-webkit-user-select:none;';
function tap(e){
try{ if(e){ e.preventDefault(); e.stopPropagation(); } }catch(x){}
openPanel();
}
b.addEventListener('touchstart', tap, {passive:false});
b.addEventListener('mousedown', tap);
document.body.appendChild(b);
}catch(e){}
}
/* ================= runLine HOOK (loads last -> checked first) ================= */
function hookRunLine(){
try{
var tries = 0;
var iv = setInterval(function(){
tries++;
try{
if(typeof window.runLine === 'function' && !window.runLine.__builderHooked){
var orig = window.runLine;
window.runLine = function(line){
try{
var tl = String(line||'').trim().toLowerCase();