feat(fitness): redesign measure page with muscle-man map, inline edit, and desktop 2-col layout

- Weight + body fat cards share a unified .metric-card component with wheel
  + keyboard (Arrow/Shift+Arrow) stepping. Side-by-side on tablet and up.
- Replaced body-parts accordion with a prominent card showing a cropped
  muscle-front silhouette and overlay dots/bands marking which regions
  have measurements. Shoulders + chest render as dotted tape-measure
  bands; other parts as dots. "Last measured" now relative (N days ago).
- Desktop layout: .main-col (form + period tracker) left, history on
  right. Two columns center together at wider widths instead of drifting
  apart. Fitness layout detects measure index and bumps max-width to
  1400px, matching nutrition.
- Inline history edit: pencil swaps the row for a compact date/kg/%
  form (Enter saves, Escape cancels) via PUT /api/fitness/measurements.
  Full-edit link preserved for body-parts tweaks.
- Body-parts history heading renamed to "Past measurements" /
  "Frühere Messungen" to avoid collision with the period tracker's
  own history.
- "Profil bearbeiten" moved to the top-left of the main column.
- Same-sides toggle in the body-parts flow now uses the shared Toggle
  component.

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "homepage",
-	"version": "1.45.1",
+	"version": "1.46.0",
 	"private": true,
 	"type": "module",
 	"scripts": {