feat(ui): reverse live activity feed to render chronological newest at the top

server/src/dashboard.html

@@ -612,7 +612,7 @@
                 loadGraph();
             } else if (tabId === 'activity-tab') {
                 const feed = document.getElementById('activity-feed');
-                feed.scrollTop = feed.scrollHeight;
+                feed.scrollTop = 0;
             } else if (tabId === 'task-tab') {
                 loadTasks();
             } else if (tabId === 'sticky-tab') {
@@ -985,7 +985,7 @@
                     feed.appendChild(div);
                 });
                 if (history.length > 0) {
-                    feed.scrollTop = feed.scrollHeight;
+                    feed.scrollTop = 0;
                 }
             } catch(e) {}
         }
@@ -1014,8 +1014,8 @@
                         }
 
                         // Auto-scroll logic
-                        if (isScrolledToBottom) {
-                            feed.scrollTop = feed.scrollHeight;
+                        if (isScrolledToTop) {
+                            feed.scrollTop = 0;
                         }
                     }
                 } catch (e) {