fix: build config for dual Docker/Cloudflare support

- next.config.ts: Auto-detects Cloudflare Pages (CF_PAGES) to use 'export', defaults to 'standalone' for Docker
- wrangler.json: Removed invalid binding for static deploy
- package.json: Added build:static script

next.config.ts

@@ -1,7 +1,7 @@
 import type { NextConfig } from "next";
 
 const nextConfig: NextConfig = {
-  output: 'export',
+  output: (process.env.STATIC_EXPORT || process.env.CF_PAGES) ? 'export' : 'standalone',
   images: {
     unoptimized: true,
   },

package.json

@@ -5,6 +5,7 @@
   "scripts": {
     "dev": "next dev",
     "build": "next build",
+    "build:static": "STATIC_EXPORT=true next build",
     "start": "next start",
     "lint": "eslint",
     "test": "vitest run",