include atlases/ in the public asset manifest

resources/atlases/ wasn't in the manifest glob list, so the build
skipped hashing/copying it into static/_assets/ and the deploy
pipeline's R2 uploader had no keys for it — atlases 404'd on staging.

src/server/PublicAssetManifest.ts

@@ -11,6 +11,7 @@ import {
 const HASHED_PUBLIC_ASSET_GLOBS = [
   "changelog.md",
   "manifest.json",
+  "atlases/**/*",
   "cosmetics/**/*",
   "flags/**/*",
   "fonts/**/*",