Implement Robust Error Handling for Duplicate Evidence Submissions

[Obludka]

Implement Robust Error Handling for Duplicate Evidence Submissions

Original Task

Develop Error Handling and Logging for Duplicate Evidence

Summary of Changes

This pull request adds comprehensive error handling and logging for duplicate evidence submissions to improve system reliability and user experience.

Acceptance Criteria

Create a custom DuplicateEvidenceError class
Log duplicate submission attempts with source IP, timestamp, and evidence details
Provide clear, actionable error messages to API consumers
Implement rate limiting for repeated duplicate submissions
90% test coverage for error handling and logging components

Tests

• Verify DuplicateEvidenceError class creation and proper error throwing
• Ensure logging captures source IP, timestamp, and evidence details for duplicate submissions
• Test rate limiting mechanism prevents excessive duplicate submissions
• Validate error messages are clear and actionable for API consumers
• Confirm 90% test coverage for error handling components