Render an answer in full instead of folding it behind a control

The fold saved a scroll and cost a click on every long answer, and what it hid
was usually the part worth reading. Follow already handles holding your place
while an answer arrives.

Plugin/unraid/include/ai_chat.php

@@ -209,8 +209,6 @@ function vv_ai_chat_assets(): void {
 
 /* Folded answers cap at a readable height with a hard bottom edge rather than a fade — a fade
    over a code block reads as a rendering fault. */
-.vv-ai-fold { max-height:420px; overflow:hidden; }
-.vv-ai-more { display:block; margin:4px 0 2px; }
 
 .vv-ai-last { display:flex; gap:10px; padding:0 2px 4px; }
 .vv-ai-lnk { background:none; border:none; padding:0; font-size:10px; color:#4a4a4a;
@@ -1002,9 +1000,6 @@ vv_ai_profiles_script();
       }
       const node = el(h + '</div>');
       chatEl().appendChild(node);
-      // Measured after it is in the DOM — scrollHeight is 0 on a detached node, so a fold decided
-      // before appending would either never fire or fire on everything.
-      foldIfLong(node);
       // Obeys Follow like every other write. This was the one place that did not, and it was the
       // worst place for it: unticking the box to hold your place while an answer arrives, only to
       // be dragged to the bottom the instant it lands.
@@ -1012,19 +1007,11 @@ vv_ai_profiles_script();
       syncJump();
     }
 
-    // A long answer buries the composer on a 15" panel, and the composer is where the next thing
-    // happens. Folded to a readable height with the control always visible — never hover-revealed,
-    // because the surfaces this runs on have no pointer near them.
-    const FOLD_PX = 420;
-    function foldIfLong(node) {
-      const body = node.querySelector('.vv-ai-body');
-      if (!body || body.scrollHeight <= FOLD_PX) return;
-      body.classList.add('vv-ai-fold');
-      body.insertAdjacentHTML('afterend',
-        `<button type="button" class="vv-ai-lnk vv-ai-more" data-more>Show the rest`
-        + ` (${Math.round(body.scrollHeight / 20)} lines)</button>`);
-    }
-
+    // Answers render in full. They used to fold at 420px behind a "Show the rest" control, on the
+    // reasoning that a long answer buries the composer on a 15" panel — true, but the cost was
+    // paid on every answer to save a scroll, and the fold hid the part of a long answer that is
+    // usually the point. Scrolling is cheaper than a click plus a scroll, and Follow already
+    // handles keeping your place while an answer arrives.
     function addError(msg) {
       const p = $('pending'); if (p) p.remove();
       chatEl().appendChild(el(`<div class="vv-ai-msg bot"><div class="vv-ai-role">Varaverk</div>`
@@ -1076,14 +1063,6 @@ vv_ai_profiles_script();
         }
         return;
       }
-      const more = e.target.closest('[data-more]');
-      if (more) {
-        const body = more.previousElementSibling;
-        if (body) body.classList.remove('vv-ai-fold');
-        more.remove();
-        return;
-      }
-
       const stog = e.target.closest('[data-src-toggle]');
       if (stog) {
         const box = stog.parentElement;
@@ -1558,10 +1537,6 @@ vv_ai_profiles_script();
                       + `<div class="vv-ai-body">${fmt(m.content)}</div>`
                       + (m.offer ? offerHtml(m.offer, i) : '') + `</div>`);
         c.appendChild(node);
-        // Folded here too, not only on arrival. A reopened thread carrying several long answers
-        // is exactly the case the fold exists for — it is what buries the composer on a 15"
-        // panel. Measured after the append, because scrollHeight is 0 on a detached node.
-        foldIfLong(node);
       });
       scroll();
       syncLast();