test(recipe-generation): hårda allergen-tester där härledda allergener överkör AI

packages/recipe-generation/src/types.ts

@@ -20,6 +20,8 @@ export interface RecipeCandidate {
   freezerFriendly: boolean;
   sourceType: "ai_generated";
   confidence: number;
+  /** AI:s påstådda allergener — används aldrig som facit; alltid härledda ur ingredienser. */
+  aiClaimedAllergens?: string[];
 }
 
 export interface RecipeCandidateIngredient {

packages/recipe-generation/src/verification.ts

@@ -135,7 +135,11 @@ export async function verifyCandidate(
   }
 
   // ── 2. Allergener (härledda, aldrig AI) ──────────────────────────────────
-  const allergens = deriveRecipeAllergens(canonicalIds, safetyInfos);
+  // AI:s eventuella påståenden om allergener ignoreras fullständigt.
+  // Säkerheten härleds alltid deterministiskt ur canonical_ingredients.
+  const aiClaims = candidate.aiClaimedAllergens ?? [];
+  const derivedAllergens = deriveRecipeAllergens(canonicalIds, safetyInfos);
+  const allergens = derivedAllergens;
 
   // ── 3. Näring (beräknad via nutrition-engine) ────────────────────────────
   const calcIngredients: RecipeIngredientForCalc[] = candidate.ingredients.map((ing) => ({

packages/recipe-generation/test/verification.test.ts

@@ -153,6 +153,54 @@ describe("verifyCandidate", () => {
     expect(result.allergens).toEqual([]);
   });
 
+  it("överkör AI:n när AI påstår inga allergener men ingrediens har mjölk", async () => {
+    const milkIngredient: ReturnType<CanonicalIngredientLookup["getById"]> = {
+      id: "milk_3",
+      nutritionPer100: {
+        basis: "per_100_g",
+        values: { kcal: 60, proteinG: 3.4, carbsG: 4.7, fatG: 3, saturatedFatG: 1.9, fiberG: 0, sugarG: 4.7, saltG: 0.1 },
+      },
+      defaultUnit: "DECILITER",
+      densityGPerMl: 1.03,
+      gramsPerPiece: null,
+      allergens: ["milk"],
+      isVegan: false,
+      isVegetarian: true,
+      containsGluten: false,
+      containsLactose: true,
+      isPork: false,
+      isBeef: false,
+      isAlcohol: false,
+    };
+    const lookup: CanonicalIngredientLookup = {
+      getById(id: string) {
+        return id === "milk_3" ? milkIngredient : undefined;
+      },
+    };
+    const c = makeCandidate({
+      aiClaimedAllergens: [],
+      ingredients: [
+        { canonicalIngredientId: "milk_3", displayNameSv: "mjölk", quantity: 5, unit: "DECILITER", optional: false, note: null },
+      ],
+    });
+    const result = await verifyCandidate(c, lookup, noSimilarity);
+    expect(result.allergens).toContain("milk");
+  });
+
+  it("slänger AI:n:s falska gluten-allergen när ingen ingrediens innehåller gluten", async () => {
+    const c = makeCandidate({
+      aiClaimedAllergens: ["gluten"],
+      ingredients: [
+        { canonicalIngredientId: "kycklingfile", displayNameSv: "kycklingfilé", quantity: 500, unit: "GRAM", optional: false, note: null },
+        { canonicalIngredientId: "ris", displayNameSv: "ris", quantity: 300, unit: "GRAM", optional: false, note: null },
+        { canonicalIngredientId: "krossade_tomater", displayNameSv: "krossade tomater", quantity: 400, unit: "GRAM", optional: false, note: null },
+      ],
+    });
+    const result = await verifyCandidate(c, mockIngredients, noSimilarity);
+    expect(result.allergens).not.toContain("gluten");
+    expect(result.status).toBe("verified");
+  });
+
   it("detekterar dubblett", async () => {
     const dupSimilarity: SimilarityLookup = {
       async hasSimilarity() {