feat: Adopt Edge runtime for API routes, add Cloudflare Pages build configuration, remove icon.png, and configure npm legacy peer dependencies.

package.json

@@ -6,7 +6,8 @@
     "dev": "next dev",
     "build": "next build",
     "start": "next start",
-    "lint": "eslint"
+    "lint": "eslint",
+    "pages:build": "npx @cloudflare/next-on-pages@1"
   },
   "dependencies": {
     "@dnd-kit/core": "^6.3.1",
@@ -20,6 +21,7 @@
     "zustand": "^5.0.8"
   },
   "devDependencies": {
+    "@cloudflare/next-on-pages": "^1.13.16",
     "@tailwindcss/postcss": "^4",
     "@types/node": "^24",
     "@types/react": "^19",
@@ -30,4 +32,4 @@
     "tailwindcss": "^4",
     "typescript": "^5"
   }
-}
+}