a11y: Touch-Target System mit Token-basierter Sizing (Redesign Phase E)

- Neue Tokens: --target-sm (32px), --target-md (40px), --target-lg (48px)
- Globale min-height:44px Regel aus reset.css entfernt
- Alle 28 min-height:unset Overrides eliminiert
- Strategy A: Buttons, Nav-Items, Inputs → 48px mobile, 40px desktop
- Strategy B: Kleine Elemente (Checkboxen, Swatches, Delete-Buttons)
  → ::before Pseudo-Element expandiert Touch-Area auf 48×48px

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

public/styles/meals.css

@@ -161,7 +161,7 @@
   font-size: var(--text-sm);
   padding: var(--space-2);
   transition: color var(--transition-fast);
-  min-height: unset;
+  min-height: var(--target-lg);
 }
 
 .meal-slot__add-btn:hover {
@@ -230,10 +230,16 @@
   display: flex;
   align-items: center;
   justify-content: center;
-  min-height: unset;
+  position: relative;
   transition: color var(--transition-fast), background-color var(--transition-fast);
 }
 
+.meal-card__action-btn::before {
+  content: '';
+  position: absolute;
+  inset: -12px;
+}
+
 .meal-card__action-btn:hover {
   color: var(--color-danger);
   background-color: var(--color-surface-2);
@@ -310,10 +316,16 @@
   align-items: center;
   justify-content: center;
   flex-shrink: 0;
-  min-height: unset;
+  position: relative;
   transition: color var(--transition-fast);
 }
 
+.ingredient-row__remove::before {
+  content: '';
+  position: absolute;
+  inset: -8px;
+}
+
 .ingredient-row__remove:hover {
   color: var(--color-danger);
 }
@@ -328,7 +340,7 @@
   border: none;
   cursor: pointer;
   padding: var(--space-1) 0;
-  min-height: unset;
+  min-height: var(--target-lg);
 }
 
 /* Einkaufsliste-Auswahl im Modal */