feat: add static score lookup site with Node.js DB builder

- Node script parses 119 Excel files into SQLite (847K students)
- Vite + React frontend with sql.js for client-side querying
- Search by exam ID (số báo danh) or student name
- Gzipped DB (36MB) with download progress bar
- GitHub Actions workflow for GitHub Pages deployment

2017/.github/workflows/deploy.yml

@@ -0,0 +1,63 @@
+name: Deploy to GitHub Pages
+
+on:
+  push:
+    branches: [main]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: pages
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          lfs: true
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+          cache-dependency-path: |
+            package-lock.json
+            web/package-lock.json
+
+      - name: Install root dependencies
+        run: npm ci
+
+      - name: Build database
+        run: npm run build:db
+
+      - name: Compress database
+        run: gzip -k -9 web/public/thptqg2017.db
+
+      - name: Install web dependencies
+        run: cd web && npm ci
+
+      - name: Build site
+        run: cd web && npx vite build
+
+      - name: Remove uncompressed db from dist
+        run: rm -f web/dist/thptqg2017.db
+
+      - uses: actions/upload-pages-artifact@v3
+        with:
+          path: web/dist
+
+  deploy:
+    needs: build
+    runs-on: ubuntu-latest
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - id: deployment
+        uses: actions/deploy-pages@v4