feat(web): visit 204 response, up page header/sort, trim system page

reaction_board/web/static/style.css

@@ -494,6 +494,8 @@ a.live-chip:hover { border-color: color-mix(in srgb, var(--accent) 55%, var(--bo
 }
 .status-grid span { display: block; color: var(--muted); font-size: 10.5px; }
 .status-grid strong { display: block; margin-top: 2px; font-size: 12.5px; font-weight: 650; }
+/* 预计下次运行等 3 项：PC 与移动端都保持一行 */
+.status-grid.status-row-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
 .status-panel .text-link { display: inline-block; margin-top: 10px; }
 
 .segmented {