Daikin weather compensation — 21% less heat from one offset
Installer left the weather-compensation offset at +5. Dropping it to 0 cut heat-pump energy about 21% — same house, same week of March, Shelly numbers.
One AGENTS.md for every coding agent — stop maintaining three rule files
Put shared project rules in AGENTS.md, keep a thin CLAUDE.md that imports it, and leave Skills for verbs — so Cursor, Claude Code, and Codex stop drifting apart.