Started palette editor.

Cleaned up tests and lint errors.
Upgraded npm packages.

vitest.config.ts

@@ -1,9 +1,15 @@
+import * as path from "path";
 import topLevelAwait from "vite-plugin-top-level-await";
 import wasm from "vite-plugin-wasm";
 import { defineConfig } from "vitest/config";
 
 export default defineConfig({
   plugins: [wasm(), topLevelAwait()],
+  resolve: {
+    alias: {
+      "@": path.resolve(__dirname, "./src"),
+    },
+  },
   test: {
     environment: "jsdom",
   },