chore(backlog): 记录 g311 完成

.ua/backlog.json

@@ -3189,7 +3189,7 @@
     {
       "id": "g311",
       "domain": "visual",
-      "status": "open",
+      "status": "done",
       "title": "骨架文本行高对齐正文：加载完成时表格不再窜一下",
       "motivation": ".ua-skeleton-text 写死 height: 12px，而表格单元格里的正文行盒是「13px 字号 × 1.55 行高 ≈ 20px」——骨架行比真实行矮 8px，五行就差 40px，dataTable 从骨架切到数据时整表高度突跳，比没有加载态更晃眼。",
       "acceptance": "① .ua-skeleton-text 的高度改成 calc(正文字号 × 正文档行高)，与真实文字行盒等高；② 同时消掉这处 12px 字面值；③ skeleton 手把手补一条说明为什么按行盒算；④ audit:visual / audit:motion 全绿，npm run check 通过。",

.ua/iterations.log

@@ -355,3 +355,4 @@
 {"ts":"2026-10-27T00:37:46+08:00","id":"g308","result":"done","commit":"f1916ef","summary":"sortableList 贴边自动滚：拖到容器上下沿按帧滚动，松手即停"}
 {"ts":"2026-10-27T00:39:08+08:00","id":"g309","result":"done","commit":"ae105b6","summary":"新增 ua iter done/add：留痕与补条目由 CLI 保证字段、时区与状态，删掉两个临时脚本"}
 {"ts":"2026-10-27T00:40:53+08:00","id":"g310","result":"done","commit":"be169b3","summary":"multiSelect 新增 selectAll：三态全选行 + 只作用于过滤结果 + 到 max 补满即停 + 键盘可达"}
+{"ts":"2026-10-27T00:41:42+08:00","id":"g311","result":"done","commit":"f794475","summary":"骨架文本高度改用字号×行高计算，与正文行盒等高，表格加载完成不再跳高"}