Update mailhog platform

CONTRIBUTING.md

@@ -3,7 +3,7 @@
 ## Backend (local)
 
 1. Copy [`.env.example`](.env.example) to `.env.local` and set `SESSION_SECRET` (at least 16 characters).
-2. Start Postgres (and optional Mailhog): `docker compose up -d postgres mailhog`
+2. Start Postgres (and optional Mailhog): `docker compose up -d postgres mailhog`. On Apple Silicon, Mailhog is configured for `linux/amd64` in [`docker-compose.yml`](docker-compose.yml) (clear emulation path). You can use `docker compose up -d postgres` only and read OTPs from the dev server log instead of Mailhog (see `.env.example`).
 3. Install dependencies: `npm ci`
 4. Apply migrations: `npx prisma migrate dev`
 5. Run the app: `npm run dev`

docker-compose.yml

@@ -11,8 +11,10 @@ services:
     volumes:
       - pgdata:/var/lib/postgresql/data
 
+  # Official image is amd64-only; pin platform so Apple Silicon uses emulation cleanly.
   mailhog:
     image: mailhog/mailhog:v1.0.1
+    platform: linux/amd64
     restart: unless-stopped
     ports:
       - "1025:1025"

package.json

@@ -55,7 +55,7 @@
     "gray-matter": "^4.0.3",
     "next": "^16.0.0",
     "next-intl": "^3.26.5",
-    "nodemailer": "^6.9.16",
+    "nodemailer": "^8.0.4",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
     "zod": "^3.25.76"