Drop legacy peer deps

.cursor/rules/storybook.mdc

@@ -91,12 +91,12 @@ story. If you need a new global, update `preview.js`.
 
 # Interaction tests (`play`)
 
-Use `@storybook/test` for interaction assertions — not `@testing-library/*`
+Use `storybook/test` for interaction assertions — not `@testing-library/*`
 directly. This matches `Checkbox.stories.js` and stays compatible with the
 Vitest portable-stories runner in `.storybook/vitest.setup.js`.
 
 ```javascript
-import { within, userEvent, expect } from "@storybook/test";
+import { within, userEvent, expect } from "storybook/test";
 
 export const Interactive = {
   play: async ({ canvasElement }) => {

.storybook/main.js

@@ -6,9 +6,9 @@ module.exports = {
   ],
   addons: [
     // Removed @storybook/addon-essentials due to version mismatch with Storybook 10.x
-    // Using individual addons instead
+    // Using individual addons instead. Interaction helpers import from storybook/test
+    // (bundled with storybook@10); @storybook/addon-interactions was merged into SB 8 core.
     "@storybook/addon-a11y",
-    "@storybook/addon-interactions",
   ],
   framework: {
     name: "@storybook/nextjs",

Dockerfile

@@ -10,19 +10,10 @@ ENV NEXT_TELEMETRY_DISABLED=1
 FROM base AS deps
 RUN apt-get update -y && apt-get install -y openssl && rm -rf /var/lib/apt/lists/*
 COPY package.json package-lock.json ./
-# --legacy-peer-deps: tolerates two pre-existing peer-dependency mismatches
-#   that local `npm install` papers over but container `npm ci` (npm 10.8.x)
-#   refuses:
-#     1. next-intl@3.26.5 declares peer next "^10..^15" while the project is
-#        on next@16. Upgrading to next-intl@4 supports next 16 cleanly.
-#     2. @storybook/addon-interactions@8 vs storybook@10 (devDep only;
-#        the addon was merged into Storybook 8 core and can be removed).
-#   Drop this flag in the follow-up that lands next-intl@4 + Storybook
-#   cleanup together.
 # --ignore-scripts: skips the project `postinstall` (`npm rebuild lightningcss
-#   && prisma generate`). The Prisma schema is not yet present in this stage;
+# && prisma generate`). The Prisma schema is not yet present in this stage;
-#   the builder stage runs `prisma generate` after `COPY . .`.
+# the builder stage runs `prisma generate` after `COPY . .`.
-RUN npm ci --no-audit --fund=false --legacy-peer-deps --ignore-scripts
+RUN npm ci --no-audit --fund=false --ignore-scripts
 
 FROM base AS builder
 RUN apt-get update -y && apt-get install -y openssl && rm -rf /var/lib/apt/lists/*

package.json

@@ -55,7 +55,7 @@
     "gray-matter": "^4.0.3",
     "jspdf": "^2.5.2",
     "next": "^16.0.0",
-    "next-intl": "^3.26.5",
+    "next-intl": "^4.0.0",
     "nodemailer": "^8.0.4",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
@@ -67,7 +67,6 @@
     "@lhci/cli": "^0.15.1",
     "@playwright/test": "^1.55.0",
     "@storybook/addon-a11y": "^10.2.0",
-    "@storybook/addon-interactions": "^8.6.14",
     "@storybook/nextjs": "^10.2.0",
     "@svgr/webpack": "^8.1.0",
     "@tailwindcss/postcss": "^4.1.11",

stories/buttons/Button.visual.stories.js

@@ -1,5 +1,5 @@
 import Button from "../../app/components/buttons/Button";
-import { within, userEvent } from "@storybook/test";
+import { within, userEvent } from "storybook/test";
 
 export default {
   title: "Components/Buttons/Button/Visual Regression",

stories/controls/Checkbox.stories.js

@@ -1,7 +1,6 @@
 import React from "react";
 import Checkbox from "../../app/components/controls/Checkbox";
-import { within, userEvent } from "@storybook/test";
+import { within, userEvent, expect } from "storybook/test";
-import { expect } from "@storybook/test";
 
 // Interaction functions for Storybook play functions
 const DefaultInteraction = {

stories/navigation/Footer.responsive.stories.js

@@ -1,5 +1,5 @@
 import Footer from "../../app/components/navigation/Footer";
-import { within, userEvent } from "@storybook/test";
+import { within, userEvent } from "storybook/test";
 
 export default {
   title: "Components/Navigation/Footer/Responsive",