Fix critical JSON formatting bug in ampcode workflow (#1955)

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Co-authored-by: Adam <[email protected]>

Author: devin-ai-integration[bot]

.github/workflows/ampcode-pr-review.yml

@@ -92,16 +92,19 @@ jobs:
           # Read the review output
           REVIEW_CONTENT=$(cat ampcode_review.txt)
           
-          # Sanitize the review content to prevent injection attacks
-          SANITIZED_CONTENT=$(echo "$REVIEW_CONTENT" | sed 's/"/\\"/g' | sed 's/`/\\`/g' | sed 's/\$/\\$/g' | tr '\n' ' ')
+          # Create a comprehensive PR review comment using proper JSON escaping
+          # Use jq to properly escape the review content for JSON
+          ESCAPED_CONTENT=$(echo "$REVIEW_CONTENT" | jq -Rs .)
           
-          # Create a comprehensive PR review comment with sanitized content
-          cat > review_comment.json << EOF
-          {
-            "body": "## 🤖 Automated Code Review by Ampcode\n\n**Review Summary:**\n\nI've analyzed the changes in this PR using AI-powered code review. Here are my findings:\n\n### 📋 Review Results\n\n\`\`\`\n${SANITIZED_CONTENT}\n\`\`\`\n\n### 🔍 Key Areas Reviewed\n- Code quality and best practices\n- Potential bugs and security issues\n- Performance considerations\n- Maintainability and readability\n\n### 📝 Notes\n- This is an automated review generated by Ampcode AI\n- Please review the suggestions and apply them as appropriate\n- For questions about specific recommendations, feel free to ask!\n\n---\n*Generated by [Ampcode](https://ampcode.com) • [View Workflow](https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }})*",
-            "event": "COMMENT"
-          }
-          EOF
+          # Create the JSON payload with proper escaping
+          jq -n \
+            --arg content "$REVIEW_CONTENT" \
+            --arg run_id "${{ github.run_id }}" \
+            --arg repo "${{ github.repository }}" \
+            '{
+              "body": ("## 🤖 Automated Code Review by Ampcode\n\n**Review Summary:**\n\nI'\''ve analyzed the changes in this PR using AI-powered code review. Here are my findings:\n\n### 📋 Review Results\n\n```\n" + $content + "\n```\n\n### 🔍 Key Areas Reviewed\n- Code quality and best practices\n- Potential bugs and security issues\n- Performance considerations\n- Maintainability and readability\n\n### 📝 Notes\n- This is an automated review generated by Ampcode AI\n- Please review the suggestions and apply them as appropriate\n- For questions about specific recommendations, feel free to ask!\n\n---\n*Generated by [Ampcode](https://ampcode.com) • [View Workflow](https://github.com/" + $repo + "/actions/runs/" + $run_id + ")*"),
+              "event": "COMMENT"
+            }' > review_comment.json
           
           # Post the review comment
           curl -X POST \