diff --git a/apps/api/features/step-definitions/profile.steps.ts b/apps/api/features/step-definitions/profile.steps.ts
index 028c9b8..1503d92 100644
--- a/apps/api/features/step-definitions/profile.steps.ts
+++ b/apps/api/features/step-definitions/profile.steps.ts
@@ -1,7 +1,7 @@
 import assert from "node:assert/strict";
 import { Then, When } from "@cucumber/cucumber";
-import { prisma } from "../../src/db/prisma.js";
 import { getEnglishKey } from "../../src/db/catalog-en-keys.js";
+import { prisma } from "../../src/db/prisma.js";
 import type { CustomWorld } from "../support/world.js";
 
 /** Splits a comma-separated list of names from a `.feature` string into trimmed, non-empty parts. */
diff --git a/apps/api/features/step-definitions/recipe.steps.ts b/apps/api/features/step-definitions/recipe.steps.ts
index d5b684f..b18ccbc 100644
--- a/apps/api/features/step-definitions/recipe.steps.ts
+++ b/apps/api/features/step-definitions/recipe.steps.ts
@@ -1,7 +1,7 @@
 import assert from "node:assert/strict";
 import { Given, Then, When } from "@cucumber/cucumber";
-import { prisma } from "../../src/db/prisma.js";
 import { getEnglishKey } from "../../src/db/catalog-en-keys.js";
+import { prisma } from "../../src/db/prisma.js";
 import { TEST_REFERENCE_DATE } from "../../test-support/reference-date.js";
 import type { CustomWorld } from "../support/world.js";
 
@@ -12,7 +12,9 @@ import type { CustomWorld } from "../support/world.js";
  * matching.
  */
 async function findIngredientId(name: string): Promise<number> {
-  const ingredient = await prisma.ingredient.findFirstOrThrow({ where: { key: getEnglishKey(name) } });
+  const ingredient = await prisma.ingredient.findFirstOrThrow({
+    where: { key: getEnglishKey(name) },
+  });
   return ingredient.id;
 }
 
diff --git a/apps/api/features/step-definitions/reference.steps.ts b/apps/api/features/step-definitions/reference.steps.ts
index 722e945..82fb3c7 100644
--- a/apps/api/features/step-definitions/reference.steps.ts
+++ b/apps/api/features/step-definitions/reference.steps.ts
@@ -12,6 +12,9 @@ Then(
   function (this: CustomWorld, name: string) {
     const keys = (this.response.body as Array<{ key: string }>).map((item) => item.key);
     const expectedKey = getEnglishKey(name);
-    assert.ok(keys.includes(expectedKey), `expected ${JSON.stringify(keys)} to include "${expectedKey}"`);
+    assert.ok(
+      keys.includes(expectedKey),
+      `expected ${JSON.stringify(keys)} to include "${expectedKey}"`,
+    );
   },
 );
diff --git a/apps/api/scripts/generate-catalog-i18n.ts b/apps/api/scripts/generate-catalog-i18n.ts
index 6852241..cc1a80c 100644
--- a/apps/api/scripts/generate-catalog-i18n.ts
+++ b/apps/api/scripts/generate-catalog-i18n.ts
@@ -42,8 +42,8 @@ console.log(
   `diets: ${Object.keys(diets).length}, allergens: ${Object.keys(allergens).length}, ingredients: ${Object.keys(ingredients).length}`,
 );
 
-const localePath = here + "../../web/src/locales/fr/translation.json";
+const localePath = `${here}../../web/src/locales/fr/translation.json`;
 const locale = JSON.parse(readFileSync(localePath, "utf8"));
 locale.catalog = { diets, allergens, ingredients };
-writeFileSync(localePath, JSON.stringify(locale, null, 2) + "\n");
+writeFileSync(localePath, `${JSON.stringify(locale, null, 2)}\n`);
 console.log(`wrote ${localePath}`);
diff --git a/apps/api/scripts/validate-catalog-en-keys.ts b/apps/api/scripts/validate-catalog-en-keys.ts
index 05bab54..d7199b2 100644
--- a/apps/api/scripts/validate-catalog-en-keys.ts
+++ b/apps/api/scripts/validate-catalog-en-keys.ts
@@ -1,3 +1,4 @@
+import { getEnglishKey } from "../src/db/catalog-en-keys.js";
 /**
  * One-off validation, run by hand: checks that `catalog-en-keys.ts` has an
  * entry for every diet/allergen/ingredient currently in
@@ -6,7 +7,6 @@
  * pre-flight check while building/editing the dictionary by hand.
  */
 import { ALLERGENS, DIETS, INGREDIENT_GROUPS } from "../src/db/reference-seed-data.js";
-import { getEnglishKey } from "../src/db/catalog-en-keys.js";
 
 function check(label: string, names: string[]) {
   const keys = new Map<string, string>();
@@ -36,7 +36,10 @@ function check(label: string, names: string[]) {
 }
 
 check("Diets", DIETS);
-check("Allergens", ALLERGENS.map((a) => a.name));
+check(
+  "Allergens",
+  ALLERGENS.map((a) => a.name),
+);
 check(
   "Ingredients",
   INGREDIENT_GROUPS.flatMap((g) => g.items.map((i) => i.name)),
diff --git a/apps/api/src/db/reference-seed-data.ts b/apps/api/src/db/reference-seed-data.ts
index 5c9dade..1d7d63a 100644
--- a/apps/api/src/db/reference-seed-data.ts
+++ b/apps/api/src/db/reference-seed-data.ts
@@ -960,7 +960,10 @@ export async function seedReferenceData(prisma: PrismaClient): Promise<void> {
     );
   });
   for (const { name, icon, category, subcategory } of changed) {
-    await prisma.ingredient.update({ where: { key: getEnglishKey(name) }, data: { icon, category, subcategory } });
+    await prisma.ingredient.update({
+      where: { key: getEnglishKey(name) },
+      data: { icon, category, subcategory },
+    });
   }
 
   // Re-resolve every ingredient's id (existing + just-created) and every
diff --git a/apps/api/test/profile.test.ts b/apps/api/test/profile.test.ts
index 9a57cf0..4368267 100644
--- a/apps/api/test/profile.test.ts
+++ b/apps/api/test/profile.test.ts
@@ -3,8 +3,8 @@ import { faker } from "@faker-js/faker";
 import { expect } from "chai";
 import request from "supertest";
 import { createApp } from "../src/app.js";
-import { prisma } from "../src/db/prisma.js";
 import { getEnglishKey } from "../src/db/catalog-en-keys.js";
+import { prisma } from "../src/db/prisma.js";
 import { resetDatabase } from "../test-support/reset-db.js";
 
 function buildSignupPayload(): SignupInput {
@@ -40,7 +40,9 @@ describe("Profile", () => {
     it("sets the profile's regime to a valid, seeded diet", async () => {
       const agent = request.agent(app);
       await agent.post("/auth/signup").send(buildSignupPayload());
-      const diet = await prisma.diet.findFirstOrThrow({ where: { key: getEnglishKey("Végétarien") } });
+      const diet = await prisma.diet.findFirstOrThrow({
+        where: { key: getEnglishKey("Végétarien") },
+      });
 
       const res = await agent.patch("/profile/diet").send({ dietId: diet.id });
 
@@ -141,8 +143,12 @@ describe("Profile", () => {
     it("starts empty, then reflects a saved selection", async () => {
       const agent = request.agent(app);
       await agent.post("/auth/signup").send(buildSignupPayload());
-      const tomate = await prisma.ingredient.findFirstOrThrow({ where: { key: getEnglishKey("Tomate") } });
-      const oignon = await prisma.ingredient.findFirstOrThrow({ where: { key: getEnglishKey("Oignon") } });
+      const tomate = await prisma.ingredient.findFirstOrThrow({
+        where: { key: getEnglishKey("Tomate") },
+      });
+      const oignon = await prisma.ingredient.findFirstOrThrow({
+        where: { key: getEnglishKey("Oignon") },
+      });
 
       const initial = await agent.get("/profile/disliked-ingredients");
       expect(initial.body).to.deep.equal([]);
@@ -160,8 +166,12 @@ describe("Profile", () => {
     it("replaces (not merges) the previous selection", async () => {
       const agent = request.agent(app);
       await agent.post("/auth/signup").send(buildSignupPayload());
-      const tomate = await prisma.ingredient.findFirstOrThrow({ where: { key: getEnglishKey("Tomate") } });
-      const oignon = await prisma.ingredient.findFirstOrThrow({ where: { key: getEnglishKey("Oignon") } });
+      const tomate = await prisma.ingredient.findFirstOrThrow({
+        where: { key: getEnglishKey("Tomate") },
+      });
+      const oignon = await prisma.ingredient.findFirstOrThrow({
+        where: { key: getEnglishKey("Oignon") },
+      });
 
       await agent
         .patch("/profile/disliked-ingredients")
diff --git a/apps/api/test/recipe.test.ts b/apps/api/test/recipe.test.ts
index 889e2c7..5cb356e 100644
--- a/apps/api/test/recipe.test.ts
+++ b/apps/api/test/recipe.test.ts
@@ -4,8 +4,8 @@ import { faker } from "@faker-js/faker";
 import { expect } from "chai";
 import request from "supertest";
 import { createApp } from "../src/app.js";
-import { prisma } from "../src/db/prisma.js";
 import { getEnglishKey } from "../src/db/catalog-en-keys.js";
+import { prisma } from "../src/db/prisma.js";
 import { resetDatabase } from "../test-support/reset-db.js";
 
 /** See `auth.test.ts` — generated rather than hardcoded, no test fixture looks like a real person's data. */
@@ -22,7 +22,9 @@ function buildSignupPayload(): SignupInput {
 
 /** Resolves a reference ingredient's id by its `reference-seed-data.ts` French name (slugified to match its `key`). */
 async function ingredientId(name: string): Promise<number> {
-  const ingredient = await prisma.ingredient.findFirstOrThrow({ where: { key: getEnglishKey(name) } });
+  const ingredient = await prisma.ingredient.findFirstOrThrow({
+    where: { key: getEnglishKey(name) },
+  });
   return ingredient.id;
 }
 
diff --git a/apps/api/test/reference.test.ts b/apps/api/test/reference.test.ts
index e7ed4e0..8fb423d 100644
--- a/apps/api/test/reference.test.ts
+++ b/apps/api/test/reference.test.ts
@@ -1,9 +1,9 @@
 import { expect } from "chai";
 import request from "supertest";
 import { createApp } from "../src/app.js";
+import { getEnglishKey } from "../src/db/catalog-en-keys.js";
 import { prisma } from "../src/db/prisma.js";
 import { resetDatabase } from "../test-support/reset-db.js";
-import { getEnglishKey } from "../src/db/catalog-en-keys.js";
 
 describe("Reference data", () => {
   const app = createApp();
diff --git a/apps/web/cypress/e2e/onboarding.cy.ts b/apps/web/cypress/e2e/onboarding.cy.ts
index c8cf368..93c2af8 100644
--- a/apps/web/cypress/e2e/onboarding.cy.ts
+++ b/apps/web/cypress/e2e/onboarding.cy.ts
@@ -32,8 +32,8 @@ describe("Onboarding wizard (regime → foyer → allergens)", () => {
     cy.intercept("GET", "**/reference/diets", {
       statusCode: 200,
       body: [
-        { id: 1, name: "Omnivore" },
-        { id: 2, name: "Végétarien" },
+        { id: 1, key: "omnivore" },
+        { id: 2, key: "vegetarian" },
       ],
     });
     cy.intercept("PATCH", "**/profile/diet", {
@@ -48,8 +48,8 @@ describe("Onboarding wizard (regime → foyer → allergens)", () => {
     cy.intercept("GET", "**/reference/allergies", {
       statusCode: 200,
       body: [
-        { id: 1, name: "Arachides", kind: "ALLERGY" },
-        { id: 2, name: "Gluten", kind: "INTOLERANCE" },
+        { id: 1, key: "peanuts", kind: "ALLERGY" },
+        { id: 2, key: "gluten", kind: "INTOLERANCE" },
       ],
     });
     cy.intercept("PATCH", "**/profile/allergies", { statusCode: 200, body: [1] }).as(
diff --git a/apps/web/cypress/e2e/preferences.cy.ts b/apps/web/cypress/e2e/preferences.cy.ts
index fcaaa64..65f3111 100644
--- a/apps/web/cypress/e2e/preferences.cy.ts
+++ b/apps/web/cypress/e2e/preferences.cy.ts
@@ -16,15 +16,15 @@ describe("Dietary preferences (/parametres/preferences) — hot saving", () => {
     cy.intercept("GET", "**/reference/diets", {
       statusCode: 200,
       body: [
-        { id: 1, name: "Omnivore" },
-        { id: 2, name: "Végétarien" },
+        { id: 1, key: "omnivore" },
+        { id: 2, key: "vegetarian" },
       ],
     });
     cy.intercept("GET", "**/reference/allergies", {
       statusCode: 200,
       body: [
-        { id: 1, name: "Arachides", kind: "ALLERGY" },
-        { id: 2, name: "Gluten", kind: "INTOLERANCE" },
+        { id: 1, key: "peanuts", kind: "ALLERGY" },
+        { id: 2, key: "gluten", kind: "INTOLERANCE" },
       ],
     });
     cy.intercept("GET", "**/profile/allergies", { statusCode: 200, body: [2] });
diff --git a/apps/web/cypress/e2e/recipe-form.cy.ts b/apps/web/cypress/e2e/recipe-form.cy.ts
index 1464c8a..44ae9fb 100644
--- a/apps/web/cypress/e2e/recipe-form.cy.ts
+++ b/apps/web/cypress/e2e/recipe-form.cy.ts
@@ -82,10 +82,12 @@ describe("Recipe form — associating ingredients", () => {
 
     cy.contains("button", "Enregistrer").should("not.be.disabled").click();
 
-    cy.wait("@createRecipe").its("request.body").should("deep.include", {
-      name: "Salade de tomates",
-      ingredients: [{ ingredientId: 1, quantity: 3, unit: "unité" }],
-    });
+    cy.wait("@createRecipe")
+      .its("request.body")
+      .should("deep.include", {
+        name: "Salade de tomates",
+        ingredients: [{ ingredientId: 1, quantity: 3, unit: "unité" }],
+      });
     cy.url().should("include", "/recettes/42");
   });
 
@@ -152,9 +154,7 @@ describe("Recipe form — associating ingredients", () => {
       steps: [{ id: 1, description: "Battre les œufs.", picture: null, order: 0 }],
     };
     cy.intercept("GET", "**/recipes/7", { statusCode: 200, body: existingRecipe });
-    cy.intercept("PATCH", "**/recipes/7", { statusCode: 200, body: { id: 7 } }).as(
-      "updateRecipe",
-    );
+    cy.intercept("PATCH", "**/recipes/7", { statusCode: 200, body: { id: 7 } }).as("updateRecipe");
 
     cy.visit("/recettes/7/modifier");
 
diff --git a/apps/web/cypress/e2e/recipes.cy.ts b/apps/web/cypress/e2e/recipes.cy.ts
index 96556e6..318a410 100644
--- a/apps/web/cypress/e2e/recipes.cy.ts
+++ b/apps/web/cypress/e2e/recipes.cy.ts
@@ -12,9 +12,9 @@ const authenticatedProfile = {
   dietId: null,
 };
 
-const vegetarien = { id: 1, name: "Végétarien" };
-const gluten = { id: 1, name: "Gluten", kind: "INTOLERANCE" };
-const oeufs = { id: 2, name: "Œufs", kind: "ALLERGY" };
+const vegetarien = { id: 1, key: "vegetarian" };
+const gluten = { id: 1, key: "gluten", kind: "INTOLERANCE" };
+const oeufs = { id: 2, key: "eggs", kind: "ALLERGY" };
 
 const ratatouille = {
   id: 1,
@@ -47,7 +47,7 @@ const omeletteDetail = {
     {
       ingredient: {
         id: 10,
-        name: "Œuf",
+        key: "egg",
         icon: "EGG",
         category: "CREMERIE_FROMAGE",
         subcategory: "OEUFS",
@@ -181,7 +181,10 @@ describe("Recipe catalog", () => {
     cy.intercept("GET", /\/recipes\?/, { statusCode: 200, body: [] });
     cy.intercept("GET", "**/recipes/999", {
       statusCode: 404,
-      body: { code: 4041, message: "not found" },
+      // ErrorCode.RECIPE_NOT_FOUND (packages/shared/src/errors/error-codes.ts)
+      // — RecipeDetailPanel only renders the "not found" message for this
+      // exact code, anything else falls into its generic error state.
+      body: { code: 4045, message: "not found" },
     });
 
     cy.visit("/recettes/999");
@@ -204,9 +207,7 @@ describe("Recipe catalog", () => {
     cy.wait("@favorite");
 
     cy.get(".favorite-star-button").should("have.class", "is-favorite");
-    cy.contains(".recipe-table__name", "Omelette")
-      .find(".recipe-table__fav-mark")
-      .should("exist");
+    cy.contains(".recipe-table__name", "Omelette").find(".recipe-table__fav-mark").should("exist");
   });
 
   it("deletes a recipe after a two-step confirmation, then clears the selection", () => {
@@ -231,7 +232,10 @@ describe("Recipe catalog", () => {
 
     cy.visit("/recettes");
 
-    cy.contains(".recipes-page__new-button", "Nouvelle recette")
-      .should("have.attr", "href", "/recettes/nouvelle");
+    cy.contains(".recipes-page__new-button", "Nouvelle recette").should(
+      "have.attr",
+      "href",
+      "/recettes/nouvelle",
+    );
   });
 });