{"id":"b72c85a8-048d-43e5-ad78-ca24675e9279","version_id":"56dd8045-06cf-46d2-84a7-8440d8793a9f","reporter":"mathviz-bug-archive","bug_summary":"[bug-4] 用户看到旧 app.js 报错: 'draw is not defined' (旧函数名)","root_cause":"index.html 引用 <script src=app.js> 无版本号，浏览器/CDN/中间代理可能缓存旧版（含已删除的 draw 函数）","fix_plan":"✓ 已修 (commit 59f1a0f): 1) <meta http-equiv=Cache-Control no-cache>; 2) <script src=app.js?v=2>; 3) nginx 区分 html（不缓存）和 static（7 天 immutable）","severity":"medium","status":"fixed","decision":"keep_as_is","reused_in_projects":[],"decided_at":"2026-06-22T02:02:22.895024","created_at":"2026-06-22T02:00:06.253978","requirement_id":null}