Add better error handling to site generation script

- Check for API errors before extracting content
- Add logging to show progress
- Use jq's empty operator to handle null values

Author: jamiew

.github/scripts/generate-site.sh

@@ -18,14 +18,23 @@ jq -n \
   > request.json
 
 # Call Claude API
+echo "Calling Claude API..."
 curl -s https://api.anthropic.com/v1/messages \
   -H "content-type: application/json" \
   -H "x-api-key: $ANTHROPIC_API_KEY" \
   -H "anthropic-version: 2023-06-01" \
   -d @request.json > response.json
 
+# Check for API errors
+if jq -e '.error' response.json > /dev/null 2>&1; then
+  echo "API Error:"
+  jq '.error' response.json
+  exit 1
+fi
+
 # Extract HTML
-jq -r '.content[0].text' response.json > docs/index.html.new
+echo "Extracting generated HTML..."
+jq -r '.content[0].text // empty' response.json > docs/index.html.new
 
 # Verify output
 if [ ! -s docs/index.html.new ]; then