[pathik-vyas]

Hi Riley, thank you for Gingham. It's lovely on the wall. I'd like the weather in Celsius, and there was no way to change it, so this adds one.

What it does

A new Temperature setting in the frame's Settings, under Appearance, next to Clock: Automatic / °F / °C.

• It works like the Clock setting. On Automatic it follows the country of the place picked on the setup page: Fahrenheit in the US and the few places that use it (BS, BZ, KY, LR, PW, FM, MH), Celsius everywhere else.
• A household whose country isn't known yet stays on Fahrenheit, so nothing changes for anyone until they pick a place or a unit.
• Every temperature on the wall follows it: now, H/L, feels-like, the week's forecast and tomorrow's evening row (including the aria labels).

How

• The server still asks Open-Meteo in Fahrenheit, so the weather cache, the fixtures and the design-review screens are unchanged. The wall converts as it draws, through one small deg() helper in dist/app.js.
• The feels-like note keeps the same threshold: 4 °F, or 2 °C.
• settings.js accepts temperature: 'auto' | 'F' | 'C', defaulting to 'auto'. Anything else is ignored, like the other settings.
• README mentions it, next to text size.

Tests

• test/settings.test.js: the setting's default, accepted values and persistence.
• test/wall.test.js: US and unknown-country households stay in °F, a GB household is in °C everywhere on the wall, Settings overrides the country both ways, and the three choices appear.
• test/updates-server.test.js: added temperature to the 0.1.0 upgrade test, as with the earlier settings.

npm run check && npm test passes: 212 tests.

Happy to change anything, such as the labels, where it sits in Settings, or the country list.

🤖 Generated with Claude Code

https://claude.ai/code/session_01QMXEQa7MreWUVb5BaDr9s9