April 2025 monthly summary for lsst-pst/pstn-019. Delivered comprehensive Pex Config documentation enhancements with practical examples, strengthening the foundation for configuration management, data provenance, reproducibility, and validation. The work details core concepts (Fields and Config objects), composability, and flexible value application, and introduces built-in support for both human-readable and machine-parsable documentation. Added a Python code example within the Pex Config docs demonstrating how to configure shape measurement routines by loading a Python script and setting plugin parameters, highlighting Python-based configuration flexibility. Commits tied to this work: ed899c9585ab9875ff0c02a2b0926a7241579bc2 (Add text on pex config) and 2ee46f7298fe414f16a9cf213e86535ef5d4e7bd (Add python example). This enhances onboarding, reduces configuration errors, and improves reproducibility of experiments by providing clear, testable config patterns and examples.