February 2025 (2025-02) monthly summary for micronaut-core focusing on strengthening logging configuration diagnostics and developer experience. Key feature delivered: improved error reporting for Logback configuration when the specified config file is missing, providing a clear System.err message instead of ambiguous failures. This includes a new test to verify the exact error output, ensuring consistent behavior across environments. Impact: faster diagnosis of logging setup issues, reduced time spent on misconfiguration troubleshooting, and more reliable startup diagnostics for applications relying on Logback. Technologies/skills demonstrated: Java, robust error handling, test-driven development, and logging configuration best practices within Micronaut-core.