fix

static/www/1.html

@@ -198,9 +198,11 @@
             position: fixed;
             right: 1rem;
             bottom: calc(var(--footer-h) + .75rem + var(--composer-h));
+            /* hover above composer+footer */
             z-index: 1100;
             /* above composer/footer */
             display: none;
+            /* hidden initially */
             align-items: center;
             justify-content: center;
             border: 1px solid #ced4da;
@@ -252,7 +254,7 @@
     <div class="composer py-3">
         <div class="container">
             <form id="promptForm" class="d-flex flex-column gap-2">
-                <!-- Single row: textarea + Go/Stop (scroll button removed from here) -->
+                <!-- Single row: textarea + Go/Stop -->
                 <div class="composer-row">
                     <textarea id="inputText" class="form-control" rows="1" placeholder=""></textarea>
                     <button id="goBtn" class="btn btn-primary" type="submit"></button>
@@ -265,7 +267,7 @@
     <!-- Fixed, non-scrollable footer -->
     <footer id="disclaimer"></footer>
 
-    <!-- Floating scroll-to-bottom button -->
+    <!-- Floating scroll button -->
     <button id="scrollDownBtn" type="button" aria-label="Scroll down" title="Scroll down">
         <svg viewBox="0 0 24 24" fill="currentColor" aria-hidden="true">
             <path
@@ -381,6 +383,7 @@
 
         function updateScrollButton() {
             const needs = isOverflowingAny() && !atBottom();
+            // hidden initially (no overflow) and whenever you’re at the bottom
             scrollDownBtn.style.display = needs ? 'inline-flex' : 'none';
         }
 
@@ -452,7 +455,7 @@
                     const { value, done } = await reader.read();
                     if (done) break;
                     const chunk = decoder.decode(value, { stream: true });
-                    rawMarkdown += chunk; // append chunk
+                    rawMarkdown += chunk; // append streamed chunk
                     flush();
                 }
                 flush();
@@ -504,7 +507,7 @@
             try { await fetch('/api/clear', { method: 'GET' }); } catch (_) { }
             await loadLocale(CURRENT_LOCALE);
             inputText.focus();
-            updateScrollButton(); // initial
+            updateScrollButton(); // initial -> hidden if no overflow
         });
     </script>
 </body>