Mercado Pago

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After reviewing existing application code, generate production-ready code as follows:

Frontend:

1. Replace current checkout UI with Mercado Pago checkout interface;
2. Handle payment form integration;
3. Implement client-side success/failure flows.

Backend:

1. Set up credentials and SDK integration in the most recent version;
2. Create payment processing endpoints;
3. Implement webhook handling with validations.

Requirements:

• Mercado Pago security best practices and validation;
• Error handling with status codes;
• Test cases for critical flows;
• Inline documentation;
• Verify all steps against Mercado Pago MCP Server documentation.

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