feat: update to react 19, pixi.js v8, tailwind v4, shad-cn

Also:

- center canvas on startup
- add version 1.21.9

components.json

@@ -1,15 +1,16 @@
 {
   "$schema": "https://ui.shadcn.com/schema.json",
-  "style": "default",
+  "style": "new-york",
   "rsc": false,
   "tsx": true,
   "tailwind": {
-    "config": "tailwind.config.js",
+    "config": "",
     "css": "src/index.css",
     "baseColor": "zinc",
-    "cssVariables": false,
+    "cssVariables": true,
     "prefix": ""
   },
+  "iconLibrary": "lucide",
   "aliases": {
     "components": "@/components",
     "utils": "@/lib/utils",
@@ -17,5 +18,5 @@
     "lib": "@/lib",
     "hooks": "@/hooks"
   },
-  "iconLibrary": "lucide"
-}
+  "registries": {}
+}