feat: add Cloudflare Worker to render README as GitHub Pages style

- worker/worker.js: fetches README.md from GitHub raw and renders with marked
- wrangler.toml: Cloudflare Worker configuration
- GitHub Actions workflow auto-deploys on README/worker changes
- Uses Cloudflare Cache (5min TTL) for performance

Author: Tomi

.github/workflows/deploy-worker.yml

@@ -0,0 +1,32 @@
+name: Deploy to Cloudflare Workers
+
+on:
+  push:
+    branches: [main]
+    paths:
+      - "README.md"
+      - "worker/**"
+      - "package.json"
+      - "package-lock.json"
+      - "wrangler.toml"
+  workflow_dispatch:
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+
+      - run: npm ci
+
+      - run: npm run build
+
+      - uses: cloudflare/wrangler-action@v3
+        with:
+          apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
+          accountId: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
+          command: deploy

.gitignore

@@ -0,0 +1,3 @@
+node_modules/
+dist/
+.wrangler/