feat: stabilization + recipe edit/create UI

frontend/src/api/shopping.ts

@@ -0,0 +1,45 @@
+import { apiFetch } from './client'
+
+export interface ShoppingItem {
+  id: string
+  name: string
+  amount?: number
+  unit?: string
+  checked: boolean
+  recipe_id?: string
+  recipe_title?: string
+  created_at?: string
+}
+
+export interface ShoppingGroup {
+  recipe_title: string
+  recipe_id?: string
+  items: ShoppingItem[]
+}
+
+export function fetchShopping() {
+  return apiFetch<ShoppingGroup[]>('/shopping')
+}
+
+export function addFromRecipe(recipeId: string) {
+  return apiFetch<{ added: number }>(`/shopping/from-recipe/${recipeId}`, { method: 'POST' })
+}
+
+export function addCustomItem(item: { name: string; amount?: number; unit?: string }) {
+  return apiFetch<ShoppingItem>('/shopping', {
+    method: 'POST',
+    body: JSON.stringify(item),
+  })
+}
+
+export function toggleCheck(id: string) {
+  return apiFetch<ShoppingItem>(`/shopping/${id}/check`, { method: 'PATCH' })
+}
+
+export function deleteItem(id: string) {
+  return apiFetch<void>(`/shopping/${id}`, { method: 'DELETE' })
+}
+
+export function deleteChecked() {
+  return apiFetch<void>('/shopping/checked', { method: 'DELETE' })
+}