feat(k-ui): motion: ring springs to focus, toggle knob slides, screens slide+fade in (theme motion tokens, 0 = off); 16ms frame timer only while moving; motion-only frames drawn+presented in part (whole elements, pixel-snapped rects, == full draw); virtio fb flushes only damage; TICKS_PER_MS in types

crates/types/src/time.rs

@@ -1,3 +1,6 @@
+/// The timebase: QEMU virt's 10 MHz.
+pub const TICKS_PER_MS: u64 = 10_000;
+
 #[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
 pub struct Ticks(u64);