feat: desktop layout — macro split sidebar next to muscle heatmap

On desktop (≥1024px), protein/balance/adherence cards sit in a row above
the muscle heatmap, with the macro split card as a vertical sidebar on the
right spanning the full height. Includes ring/triangle legend for
actual vs target. Mobile layout unchanged.

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "homepage",
-	"version": "1.13.1",
+	"version": "1.13.2",
 	"private": true,
 	"type": "module",
 	"scripts": {