feat: initial commit

apps/user-app/src/stores/favoritesStore.ts

@@ -0,0 +1,22 @@
+// Adapted from legacy henza_pwa/src/Mixins/favorite.ts + the `favorits` slice of
+// myDataStore. Legacy persisted favorites server-side via POST /add-to-fav; the
+// new API has no favorites endpoint yet, so this is local-only (Pinia state,
+// not persisted) until that backend support exists. Flagged — not a silent
+// behavior match, a deliberate stand-in.
+import { defineStore } from 'pinia'
+
+export const useFavoritesStore = defineStore('favorites', {
+  state: () => ({
+    ids: [] as string[],
+  }),
+  actions: {
+    toggle(id: string) {
+      const index = this.ids.indexOf(id)
+      if (index === -1) this.ids.push(id)
+      else this.ids.splice(index, 1)
+    },
+    isFavorite(id: string) {
+      return this.ids.includes(id)
+    },
+  },
+})