v1.17.1 — no hover recolouring

Tappable readings dimmed under the pointer and metric tiles washed their background. On a card whose whole job is showing state, content changing colour reads as the data changing rather than as "this is clickable".

The pointer cursor is now the entire affordance, and nothing on a card recolours on hover.

That also settles an inconsistency predating this change: the wind card's rows never highlighted, while the rain rows and the metric tiles did.

The editor keeps its hover states — inputs, buttons and chips are controls rather than data, and there the feedback is doing real work.