Fix JSON generation in workflow

Use jq to properly build request JSON and handle prompt escaping.

Author: jamiew

.github/workflows/generate-site.yml

@@ -30,20 +30,28 @@ jobs:
       - name: Generate site with Claude API
         env:
           ANTHROPIC_API_KEY: ${{ secrets.CLAUDE_CODE_OAUTH_TOKEN }}
+          PROMPT_CONTENT: ${{ steps.prompt.outputs.content }}
         run: |
-          # Build the prompt
-          cat > request.json <<'JSONEOF'
-          {
-            "model": "claude-sonnet-4-20250514",
-            "max_tokens": 8192,
-            "messages": [
-              {
-                "role": "user",
-                "content": "You are a web developer creating a GitHub Pages site.\n\nHere are the requirements:\n\n${{ steps.prompt.outputs.content }}\n\nPlease generate a complete, production-ready index.html file. Output ONLY the HTML code, no explanations or markdown code blocks."
-              }
-            ]
-          }
-          JSONEOF
+          # Build the JSON request with jq to handle escaping
+          jq -n \
+            --arg model "claude-sonnet-4-20250514" \
+            --arg prompt "You are a web developer creating a GitHub Pages site.
+
+Here are the requirements:
+
+$PROMPT_CONTENT
+
+Please generate a complete, production-ready index.html file following all requirements. Output ONLY the HTML code, no explanations or markdown code blocks." \
+            '{
+              model: $model,
+              max_tokens: 8192,
+              messages: [
+                {
+                  role: "user",
+                  content: $prompt
+                }
+              ]
+            }' > request.json
 
           # Call Claude API
           RESPONSE=$(curl -s https://api.anthropic.com/v1/messages \