✨ Add badges

• Implement tests for existing user badge SVG retrieval.


• Ensure placeholder SVG is returned for non-existent users.


• Verify case-insensitive username lookup for badges.


• Test badge filtering by domain to return correct deployment messages.


• Check response for unknown domains with no deployments.


• Validate status tiers based on deployment recency.

🎨 Revise README for clarity and conciseness

Streamline content and enhance API usage examples for better understanding.

✨ Enhance API response structure and tests

Improve error handling in API responses and update tests to validate
new response formats and status codes.

🎨 Refine AI coding agent guide structure

Enhance organization and clarity of the guide for better usability.