Worked on stabilizing the plugin manifest pipeline for the grafana/grafana-plugin-sdk-go repository by addressing a bug related to node_modules filtering. Improved the manifest generation process in Go to exclude frontend dependencies from the backend manifest, specifically refining the exclusion to apply only at the root node_modules level while preserving nested directories. Enhanced test reliability and maintainability by fixing lint errors using errcheck and gosec, and by introducing test utilities for file and directory management. Updated file and directory permissions to align with security best practices, resulting in a more robust backend development workflow and smoother future changes to plugin manifest generation.