add deepwiki (#31182)

lumotai · web-flow · commit 21cbe6c0b390 · 2025-05-28T19:25:11.000+09:00
diff --git a/README.md b/README.md
@@ -5,6 +5,7 @@
 [![NPM Downloads][npm-downloads]][npmtrends-url]
 [![DeepScan][deepscan]][deepscan-url]
 [![Discord][discord]][discord-url]
+[![Ask DeepWiki](https://deepwiki.com/badge.svg)](https://deepwiki.com/mrdoob/three.js)
 
 #### JavaScript 3D library
 
