add redis for job queuing

feat(content): enhance logging for Gradio client initialization and API calls

feat(auth): add country and language support to user registration

feat: add keyword analysis functionality and enhance content service

feat: Generate absolute URL for job image endpoint in job status response

feat: Implement image data processing utility and enhance post content generation logic

fix: Update JWT handling in cookies to avoid modifying immutable headers

feat: Enhance image handling in post generation and display logic

Refactor project structure and remove outdated documentation

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