Add Craft.js site builder (v2) - complete rebuild from GrapesJS

Rebuilt the visual site builder from scratch using Craft.js, React 18,
and TypeScript. The new editor renders directly in the DOM (no iframe),
supports 40+ components, multi-page with shared header/footer, 16
templates, full-spectrum color/gradient controls, custom head code
injection, save/publish workflow, and auto-save.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

craft/package.json

@@ -0,0 +1,27 @@
+{
+  "name": "whp-site-builder",
+  "private": true,
+  "version": "2.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc && vite build",
+    "preview": "vite preview",
+    "test": "playwright test tests/site-builder.spec.ts --reporter=list",
+    "test:headed": "playwright test tests/site-builder.spec.ts --reporter=list --headed"
+  },
+  "dependencies": {
+    "@craftjs/core": "^0.2.10",
+    "@craftjs/layers": "^0.2.7",
+    "react": "^18.3.1",
+    "react-dom": "^18.3.1"
+  },
+  "devDependencies": {
+    "@playwright/test": "^1.59.1",
+    "@types/react": "^18.3.12",
+    "@types/react-dom": "^18.3.1",
+    "@vitejs/plugin-react": "^4.3.4",
+    "typescript": "^5.6.3",
+    "vite": "^6.0.5"
+  }
+}