September 2025 monthly summary for nf-core/mag focusing on release preparation and test-suite alignment for the 5.1.0dev cycle. Delivered essential version bumps across config and tests, ensuring the development baseline and CI snapshots are in sync for a smooth post-release development phase.

During August 2025, nf-core/configs delivered targeted enhancements to Sanger/LSF configurations, focusing on modularizing cluster-specific presets for farm22 and tol22 and introducing default resource allocations for the LSF executor to guarantee baseline CPU, memory, and wall-time. This work, underpinned by commits 6eb5d65f62a705ffd2d3a8c96996d95e4ea2bf2c and 0a3d34befa25b3cd52845c5ee3d980cbb608f328, improves reliability and consistency across clusters. A separate bug fix corrected a cluster identification typo by renaming 'cluster' to 'clustername', ensuring correct application of cluster-specific configuration files (commit d9e7108f9995ef9de9b4a09d1bb67a0862503a76). The combined results yield more predictable scheduling, better resource governance, and reduced risk of misconfiguration. Technologies demonstrated include config modularization, LSF integration, cluster-aware defaults, and proactive bug-hunting and hygiene.