ci: add GitHub Pages deployment workflow for docs site

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: ryanbas21

.github/workflows/docs.yml

@@ -0,0 +1,49 @@
+name: Deploy Docs
+
+on:
+  push:
+    branches: [main]
+    paths:
+      - 'packages/docs-site/**'
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: 'pages'
+  cancel-in-progress: false
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: pnpm/action-setup@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          cache: 'pnpm'
+
+      - run: pnpm install --frozen-lockfile
+
+      - name: Build docs site
+        run: pnpm --filter docs-site build
+
+      - uses: actions/upload-pages-artifact@v3
+        with:
+          path: packages/docs-site/dist
+
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4