feat: initial IPFS Portal — Next.js frontend for remote IPFS node management

Multi-file upload with Quick Upload + Crypto Payment tabs.
Dashboard with live IPFS metrics, Explorer, Peers, Pins, History, Settings pages.
Docker deploy (standalone output), full test suite (16 Playwright tests).
Payment integration via IPFSPortalPayment + MockUSDC contracts on zkSync.

package.json

@@ -0,0 +1,29 @@
+{
+  "name": "@maos/ipfs-portal",
+  "version": "1.0.0",
+  "private": true,
+  "description": "IPFS Portal — Next.js frontend for remote IPFS node management",
+  "scripts": {
+    "dev": "next dev --port 3445",
+    "build": "next build",
+    "export": "next build && npx serve out"
+  },
+  "dependencies": {
+    "@tailwindcss/postcss": "^4.3.1",
+    "clsx": "^2.1.1",
+    "lucide-react": "^0.577.0",
+    "next": "^16.2.7",
+    "postcss": "^8.5.15",
+    "react": "^19.2.7",
+    "react-dom": "^19.2.7",
+    "viem": "^2.29.0"
+  },
+  "devDependencies": {
+    "@playwright/test": "^1.61.1",
+    "@types/node": "^22.0.0",
+    "@types/react": "^19.0.0",
+    "@types/react-dom": "^19.0.0",
+    "tailwindcss": "^4.0.0",
+    "typescript": "^5.8.0"
+  }
+}