chore(backlog): 记录 g325 完成

.ua/backlog.json

@@ -3315,7 +3315,7 @@
     {
       "id": "g325",
       "domain": "visual",
-      "status": "open",
+      "status": "done",
       "title": "avatar 破图回退文字头像：src 加载失败不再露碎图标",
       "motivation": "avatar 有 src 时直接渲染 img，加载失败（404 / 网络断开 / 权限过期）会露出浏览器默认碎图标，圆形容器里一块灰裂图比没有头像更难看；image 组件已有 error 兜底，avatar 没跟，同类组件口径不一致。",
       "acceptance": "① avatar img 注册 error 监听：加载失败就地替换为与无 src 时同款的文字头像（名称首字 + role=img + aria-label），尺寸与语义底色不变；② 正常加载路径零变化（不加多余请求）；③ manifest 文档 avatar props/步骤同步补一条兜底说明，verify 双向校验过；④ npm run check 通过。",

.ua/iterations.log

@@ -369,3 +369,4 @@
 {"ts":"2026-10-27T01:10:49+08:00","id":"g322","result":"done","commit":"6beaf74","summary":"get_component name 逗号批量（json 数组 / md 水平线分块），解析抽 resolveEntry 供 CLI 与 MCP 共用，坏 id 报序号"}
 {"ts":"2026-10-27T01:13:27+08:00","id":"g323","result":"done","commit":"f842107","summary":"renderDocs 注入 RECIPES 数据：details 折叠 + 组件 chips + 代码与要点，导航补配方锚点，搜索态隐藏"}
 {"ts":"2026-10-27T01:16:37+08:00","id":"g324","result":"done","commit":"8e358c4","summary":"setColumns 与 setRows 对称：引用未变短路，失效 sorting/filters 按 key 剔除，分页选择不动；smoke 补 6 断言"}
+{"ts":"2026-10-27T01:18:12+08:00","id":"g325","result":"done","commit":"513304f","summary":"img error 监听就地替换为首字占位，role/aria/尺寸/底色不变；manifest 补兜底步骤"}