June 2026 monthly summary for cdce8p/ha-core: Delivered targeted diagnostics reliability and privacy improvements, expanded BSCO2 sensor support and naming consistency, preserved main controller during partial node refresh to prevent device removal, introduced ventilation state select for Duco box nodes, upgraded Python dependencies for duco-connectivity, and completed code quality and test suite improvements. These changes enhance robustness, privacy, sensor coverage, user experience, and overall maintainability, while reducing operational risk and enabling faster iteration.

May 2026 Duco integration across core, core-based, and docs repositories delivered substantial modernization, reliability, and observability improvements. Key features include dynamic handling of unknown device types with automatic entity creation and improved retry/logging, a migration to the python-duco-connectivity library with cleanup of legacy temperature sensors, and expanded diagnostics plus a new system health platform. Dependency updates to python-duco-client (extending from 0.3.x to 0.5.x) ensured compatibility with latest features and fixes. Cross-repo enhancements also included VLV node support for CO2/humidity sensors, standardized ventilation state codes, better LAN info handling, and refactored tests with shared fixtures. Documentation updates clarify polling behavior, fan control scenarios, and sensor module support, improving user guidance and reduce support questions. Overall, these changes reduce maintenance burden, improve issue triage with API version diagnostics, and deliver more reliable, faster, and scalable Duco integrations for Home Assistant users.

April 2026 (2026-04) monthly summary for developer work in home-assistant/core. Key feature delivered: Duco Ventilation Systems Integration, enabling control and monitoring of Duco ventilation systems directly within Home Assistant. This work extends device compatibility, supports user automation for energy efficiency and indoor air quality, and is implemented in the core repository with a clearly scoped integration path. The change is associated with the commit noted as 'Add Duco integration (#167220)' (hash: e7e4c495fd2112b1b2d69a1af2284751711d2fe9).

March 2026: Delivered enhanced PoolDose integration in Home Assistant core with diagnostics and dependency upgrades, improving operational visibility and compatibility for PoolDose-powered setups. Implemented new binary sensors for diagnostics and upgraded PoolDose to 0.9.0 to access new features and fixes. No major bugs reported; stability maintained through diagnostic enhancements and dependency alignment. Overall impact: reduced downtime risk, faster issue triage, and improved maintainability. Technologies/skills demonstrated: binary sensor development, manifest/requirements management, and cross-team collaboration (co-authored commits).