Forgot to commit a couple things

Author: jeremy-rifkin

.gitignore

@@ -11,4 +11,5 @@ backup
 scratch
 indexes/wiki/*.json
 indexes/wiki/*.html
-!indexes/wiki/tsne.js
+indexes/cppref/*.json
+indexes/cppref/*.html

package-lock.json

@@ -64,6 +64,7 @@
         "linkedom": "^0.18.12",
         "lint-staged": "^16.2.7",
         "ml-pca": "^4.1.1",
+        "umap-js": "^1.4.0",
         "node-fetch": "^3.3.2",
         "prettier": "3.7.4",
         "vitest": "^4.0.16"