fix: add missing span to van.tags destructuring

修复白屏问题：缺少 span 标签解构导致运行时错误。

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

web/src/work/view/parseModal.ts

@@ -5,7 +5,7 @@ import { WorkRoute } from '..'
 import { createTask, getPlayInfo } from '../data'
 import PQueue from 'p-queue'
 
-const { a, button, div, input, select, option, label } = van.tags
+const { a, button, div, input, select, option, label, span } = van.tags
 
 type Option = {
     workRoute: WorkRoute