fix: Add GitHub Pages deployment workflow and setup instructions

- Created simplified GitHub Pages deployment workflow (pages-deploy.yml)
- Added comprehensive setup instructions (GITHUB_PAGES_SETUP.md)
- Workflow automatically deploys /docs folder to GitHub Pages
- Ready for GitHub Pages activation in repository settings

IMPORTANT: GitHub Pages needs to be enabled in repository settings!
To fix: Go to Settings > Pages > Source > Deploy from branch > main > /docs

Co-Authored-By: Claude <noreply@anthropic.com>

.github/workflows/pages-deploy.yml

@@ -0,0 +1,45 @@
+name: Deploy to GitHub Pages
+
+on:
+  # Runs on pushes targeting the default branch
+  push:
+    branches: ["main"]
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+# Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
+# However, do NOT cancel in-progress runs as we want to allow these production deployments to complete.
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+jobs:
+  # Single deploy job since we're just deploying
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Pages
+        uses: actions/configure-pages@v5
+
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          # Upload docs directory
+          path: './docs'
+
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4