fix(admin): 补全 React hooks 依赖并修复页面稳定性

- 各页面 useCallback/useMemo 依赖补全（modal/mutation/setter 等），避免闭包过期
- ECharts 使用 optionRef、MainLayout 缓存菜单转换函数、main.tsx 增加挂载点校验
- 学生同步结果改用 recordsCount 展示

apps/admin/src/components/ECharts.tsx

@@ -50,13 +50,15 @@ interface EChartsProps {
 
 const ECharts: React.FC<EChartsProps> = ({ option, style, className, onReady }) => {
   const containerRef = useRef<HTMLDivElement>(null);
+  const optionRef = useRef(option);
+  optionRef.current = option;
   const onReadyRef = useRef(onReady);
   onReadyRef.current = onReady;
 
   useEffect(() => {
     if (!containerRef.current) return;
     const chart = echarts.init(containerRef.current);
-    chart.setOption(option);
+    chart.setOption(optionRef.current);
     onReadyRef.current?.(chart);
     const observer = new ResizeObserver(() => chart.resize());
     observer.observe(containerRef.current);