configure Next.js for static exports and add GitHub Pages deployment workflow

.github/workflows/frontend_deploy.yml

@@ -0,0 +1,49 @@
+name: Publish Frontend on GitHub Pages
+
+on:
+  push:
+    branches:
+      - master
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Setup Node.js
+        uses: actions/setup-node@v2
+        with:
+          # update the Node version to meet your needs
+          node-version: 24
+          cache: npm
+          cache-dependency-path: crypto_clash_frontend/package-lock.json
+
+      - name: Build with Next.js
+        run: npm run build
+        working-directory: crypto_clash_frontend
+
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: ./crypto_clash_frontend/out
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - name: Publish to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4

crypto_clash_frontend/next.config.ts

@@ -1,7 +1,8 @@
 import type { NextConfig } from "next";
 
 const nextConfig: NextConfig = {
-  /* config options here */
+  output: "export",  // <=== enables static exports
+  reactStrictMode: true,
 };
 
 export default nextConfig;