No + on the Signals folder's row, so it is like any folder's (#265)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

web/src/signals.ts

@@ -50,13 +50,11 @@ function signalFolder(list: HTMLElement, q: string){
   list.appendChild(feedRow(SIGNALS,'sigs',
     `<button class="chev" aria-expanded="${open}" title="Show or hide your signals" aria-label="Show or hide your signals">${ICON.caret}</button>`+
     sigArt()+`<div class="txt"><b>Signals</b><small>${n?plural(n,'signal'):'What matters, out of the noise'}</small></div>`+
-    // The + before the count, so the counts line up with the Signals' under it.
-    `<button class="iconbtn sigadd" title="New signal" aria-label="New signal">${ICON.plus}</button>`+
+    // No + of its own (#265): a row like any folder's. New signal is on the folder's page.
     badgeHTML(S.signals.reduce((k,s)=>k+s.unread,0)),
     ()=>selectFeed(SIGNALS)));
   const row=list.lastElementChild!;
   $('.chev',row).onclick=(ev: Event)=>{ ev.stopPropagation(); toggleGroup(SIGNALS); };
-  $('.sigadd',row).onclick=(ev: Event)=>{ ev.stopPropagation(); signalModal(); nav(false); };
   if(!open) return;
   for(const sg of mine){
     const el=feedRow(':signal:'+sg.id,'child',