Code Quality: Fix remaining lint/formatting issues in services-v2

[AyanB-dev]

Summary

Address remaining lint and formatting issues in the refactored services-v2 codebase to ensure full compliance with project standards.

Current State

The core refactoring work is complete and functional, but there are remaining formatting issues in some files that need cleanup.

Issues to Address

Lint/Formatting Issues

• Fix remaining lint errors in LeaderboardService.js and VoiceTrackingService.js
  • Indentation inconsistencies (2 spaces vs 4 spaces)
  • Quote style standardization (single quotes required)
  • Trailing comma removal where needed

Optional Enhancements

• Review and optimize remaining console.log statements across all test files
• Ensure all service files follow consistent JSDoc documentation patterns
• Validate ESLint configuration compliance across services-v2

Acceptance Criteria

• npm run lint passes with 0 warnings/errors
• All services-v2 files follow consistent formatting
• JSDoc documentation is complete and standardized

Priority

LOW - Does not block functionality, cosmetic/quality improvements

Notes

The core architecture refactoring is complete and validated. These remaining items are code quality improvements that can be addressed incrementally without impacting the working system.

Estimated Effort: 30-60 minutes
Risk: Very Low - formatting changes only