Fix deployment: build English locale only to stay under GitHub Pages 1GB limit

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

Author: mbyrdLCS

.github/workflows/deploy-docs.yml

@@ -24,7 +24,7 @@ jobs:
           node-version: 20
           cache: npm
       - run: npm ci
-      - run: npm run build
+      - run: npm run build -- --locale en
       - uses: actions/upload-pages-artifact@v3
         with:
           path: build