修复布局：同步生成表格标签并移除跨帧补写

通过表格原生渲染统一生成手机布局标签，删除全页监听与后补扫描。动态等级列使用单一标题并保留颜色。

补齐首次插入、深链刷新、动态表头与首页延迟响应几何回归。全量214项通过，最终专项16项通过；不声明全站所有场景零位移。

app/plugins/04-table-labels.client.js

@@ -1,36 +0,0 @@
-/** 窄屏把表格行堆叠成卡片时，用列标题给每个单元格补 data-label，供 CSS 显示字段名。 */
-import { defineNuxtPlugin } from "#app";
-
-function labelTable(table) {
-  const names = [...table.querySelectorAll(":scope > thead > tr > th")].map(
-    (th) =>
-      th.querySelector(".p-datatable-column-title")?.textContent.trim() ?? "",
-  );
-  for (const row of table.querySelectorAll(":scope > tbody > tr")) {
-    [...row.children].forEach((cell, index) => {
-      const name = names[index] ?? "";
-      if (cell.dataset.label !== name) cell.dataset.label = name;
-    });
-  }
-}
-
-export default defineNuxtPlugin({
-  name: "table-cell-labels",
-  setup() {
-    let queued = false;
-    const run = () => {
-      queued = false;
-      document.querySelectorAll("table.p-datatable-table").forEach(labelTable);
-    };
-    const schedule = () => {
-      if (queued) return;
-      queued = true;
-      requestAnimationFrame(run);
-    };
-    new MutationObserver(schedule).observe(document.body, {
-      childList: true,
-      subtree: true,
-    });
-    schedule();
-  },
-});