[devin-ai-integration]

Summary

Adds SLF4J logging instrumentation to the UserService class with entry/exit logging for both public methods (createUser and updateUser). The logging captures non-sensitive identifiers only (username for creation, userId for updates) and uses INFO level as specified.

Review & Testing Checklist for Human

• Verify that no sensitive data (passwords, emails) is being logged - only username and userId are captured
• Confirm INFO log level is appropriate for your production environment (may be verbose)
• Run the application and trigger user creation/update to verify logs appear correctly

Notes

• Compilation verified locally with ./gradlew compileJava --no-daemon
• SLF4J is already included via Spring Boot dependencies

Link to Devin run: https://partner-workshops.devinenterprise.com/sessions/f8a59ee00c59496fa4687ca3fcb3eea3

[devin-ai-integration]

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