feat: 批量更新账号资料支持勾选字段（含AI打标）

- 更新全部账号ID 升级为 批量更新账号资料：弹窗勾选 账号ID/昵称/粉丝数/IP属地/性别/简介/标签
- 标签勾选时调用 LLM 重新打标（覆盖已有标签），AI_TAGGING_TOOL 未配置自动跳过
- 只写入选中字段，爬取为空的字段跳过不清空；演示账号（xhs- 前缀）不参与
- .env.app.example 为 SEED_DEMO_DATA 补充注释

app/globals.css

@@ -3043,6 +3043,48 @@ a {
   font-size: 10px;
 }
 
+.field-pick-note {
+  margin: 0 0 14px;
+  color: #8a978f;
+  font-size: 11px;
+  line-height: 1.7;
+}
+
+.field-pick-list {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+  margin-bottom: 12px;
+}
+
+.field-pick-item {
+  flex-direction: row;
+  align-items: center;
+  gap: 10px;
+  margin-bottom: 0;
+  padding: 9px 11px;
+  border: 1px solid #eef1ef;
+  border-radius: 9px;
+  cursor: pointer;
+}
+
+.field-pick-item:hover {
+  border-color: #d8e2dd;
+}
+
+.field-pick-item input {
+  width: 15px;
+  height: 15px;
+  padding: 0;
+  accent-color: #70ad95;
+  cursor: pointer;
+}
+
+.field-pick-item span {
+  color: #4a5854;
+  font-size: 12px;
+}
+
 .resource-platform-line {
   display: flex;
   min-width: 0;