fix(fitness): hoist rest timer above set table, persist across exercise switches

Rest timer was inlined as a row inside SetTable, tied to a specific set.
Switching to another exercise hid it from view. Now lives below the
exercise focus card, renders whenever a rest is active regardless of
focused exercise, and labels which set/exercise it belongs to when
looking at a different one.

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "homepage",
-	"version": "1.69.2",
+	"version": "1.69.3",
 	"private": true,
 	"type": "module",
 	"scripts": {