Gas calculation visibility — 26 October 2026

The supplied screenshot had v50 6 → 4 and an envelope area of 680 m² saved, but no gas heating confirmation or indoor temperature. Weather and a warmwater base alone do not provide these prerequisites. The overview previously hid this behind a year-on-year comparison message.

The overview now lists missing prerequisites together and links directly to the heating inputs. Once suitable data exist, it displays the airtightness estimate for the actual measurement period with sensitivity range. A second measurement year is not required. Numeric comfort input saves on valid input, avoiding reliance on blur/change before navigation.

Validation: full npm test suite passed before the final input handler change; final gas visibility, simple entry and analysis tests passed afterwards, including the actual input handler. Pages package and Worker JSON checks passed. Browser test with synthetic hourly measurements showed the two missing inputs, then a visible calculated outcome after selecting gas heating and filling temperature. This is QA data, not a personal savings calculation. Browser screenshot capture timed out.