During December 2025, Sharko focused on improving data quality and consistency in the bramstroker/homeassistant-powercalc repository. He addressed a critical bug by standardizing Shelly device naming across all JSON model files, correcting inconsistencies in capitalization to ensure accurate data handling and device identification. This work involved careful JSON handling and attention to data management, reducing mapping errors in automations and dashboards while minimizing user confusion. Sharko also updated related documentation in Markdown to align with these changes, enhancing maintainability and traceability. His contributions demonstrated a methodical approach to data integrity, though the scope was limited to a single targeted bug fix.