# Observations

## Open

- The cost metric records planned first-dose spend, not actual purchase price,
  amount added, or follow-up outcome; do not optimize autonomously against it
  until those are captured.

## Closed

- Replaced universal CYA and salt assumptions with homeowner-entered generator
  targets after manufacturer guidance proved inconsistent.

## Notes

- Sensor APIs, report photos, and colorimetric images should become input
  adapters to the same deterministic plan engine.