Migrate from Vercel to Cloudflare Pages, fix distill command symbol

Replace Vercel serverless functions with Cloudflare Pages static
rewrites and lightweight download functions. Pre-generate all API
JSON data at build time for zero-invocation static serving. Also
fix stale simplify→distill rename in framework-viz periodic table.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

package.json

@@ -19,13 +19,17 @@
   "license": "SEE LICENSE FILE",
   "scripts": {
     "build": "bun run scripts/build.js",
-    "clean": "rm -rf dist",
+    "clean": "rm -rf dist build",
     "rebuild": "bun run clean && bun run build",
     "dev": "bun run server/index.js",
-    "start": "bun --production run server/index.js",
+    "preview": "bun run build && wrangler pages dev",
+    "deploy": "bun run build && wrangler pages deploy build/",
     "test": "bun test",
     "screenshot": "bun run scripts/screenshot-antipatterns.js",
     "og-image": "bun run scripts/generate-og-image.js"
   },
-  "type": "module"
+  "type": "module",
+  "devDependencies": {
+    "wrangler": "^4.71.0"
+  }
 }