feat(weekplan): MIKRO WEEK-2 dagliga måltidsslots (vardag middag, helg lunch+middag)

apps/mobile/src/app/(tabs)/plan.tsx

@@ -79,6 +79,11 @@ export default function PlanScreen() {
   }, []);
   const mondayKey = toKey(monday);
   const weekDays = useMemo(() => Array.from({ length: 7 }, (_, i) => addDays(monday, i)), [monday]);
+  // Vardag: middag. Helg (lör/sön): lunch + middag. Realistisk förifylld default.
+  const mealSlots = useMemo(
+    () => weekDays.map((d) => (d.getDay() === 0 || d.getDay() === 6 ? ["lunch", "dinner"] : ["dinner"])),
+    [weekDays],
+  );
 
   const query = useQuery({
     queryKey: ["week-plan", mondayKey],
@@ -125,7 +130,7 @@ export default function PlanScreen() {
     mutationFn: () =>
       api("/v1/week-plans/generate", {
         method: "POST",
-        body: { weekStartDate: mondayKey, mealTypes: ["lunch", "dinner"] },
+        body: { weekStartDate: mondayKey, mealTypes: ["lunch", "dinner"], mealSlots },
       }),
     onSuccess: () => setGenerating(true),
     onError: onMutationError,