max / goingson

Adopt surface-well on the four list containers The list surfaces read as bands on a panel today. Each is now a well: the content surface cut into the raised one it sits in, so a list reads as content in a container. Uses the .well class makeover-webview already emits rather than writing the fill and the inset bevel out four times. That class arrived unused with phase A; this is its first consumer, and it is why fill and edge are named together in the description. Adds --surface-well to the intent layer at the resolved goingson value. makeover derives it and themes.js applies the whole intent set, so this default only covers first paint, but it is required: an undefined var() invalidates the whole declaration rather than degrading, so a rule reading an intent with no default here would drop its background entirely until the theme loads. The filed task said to adopt the intent; it did not say this, and the same omission was already corrected once for the bevel. Containers: task list, event list, email list, contacts grid. Bumps makeover to 2.3.0, which is what carries the derivation.