Implement structured logging with JSON output for production

[nanaf6203-bit]

Problem

NestJS Logger outputs plain text logs. Production logging systems require structured JSON for querying and alerting.

Expected Outcome

All logs output structured JSON in production mode.

Acceptance Criteria

• Integrate pino or winston as logger backend
• JSON log format in production, pretty-print in development
• Automatic inclusion of timestamp, module, correlation ID
• No sensitive data in logs

Files Affected

src/main.ts, new src/common/logger.ts

Difficulty

Easy

Estimated Effort

Small (1-2 days)

Labels

observability, enhancement, ops

[mikevill20]

@mikevill20 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hello maintainer, please assign this issue to me. Thanks

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[directorfloo]

@directorfloo has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

I would love to work on this issue expertly, please assign it to me

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[khalyaro]

@khalyaro has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hi
Can i please work on this issue?

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[Inspector222]

@Inspector222 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hi! I understand the requirements and can deliver an efficient, well-tested solution. Please consider assigning this issue to me.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Inspector222 to this issue.

[drips-wave]

Congratulations, @khalyaro! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on July 30, 2026.

🧑‍💻 @khalyaro: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

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