feat: manual nutrition entry on recipe editor

Lets authors enter nutrition values by hand instead of relying only on
the AI estimate; the detail-page panel now shows whether data was
manually entered or AI-estimated and offers to switch between them.

v0.35.0

apps/web/app/(app)/recipes/[id]/edit/page.tsx

@@ -61,6 +61,11 @@ export default async function EditRecipePage({ params }: Params) {
       preview: getPublicUrl(photo.storageKey),
     })),
     isBatchCook: recipe.isBatchCook,
+    // Only pre-fill the manual-nutrition editor with existing values when
+    // they were actually manually entered — AI-estimated data shouldn't
+    // silently become "manual" just because the recipe happened to have
+    // an estimate on file when it was opened for editing.
+    nutrition: recipe.nutritionManual ? recipe.nutritionData?.perServing ?? null : null,
     dishes: recipe.batchDishes.map((dish) => ({
       id: dish.id,
       name: dish.name,