feat: Enable host trust for authentication and update example environment configuration

- Set AUTH_TRUST_HOST to true in env.example for improved security.
- Updated NextAuth configuration to trust the host during authentication.

env.example

@@ -4,6 +4,7 @@ DATABASE_URL="postgresql://user:password@localhost:5432/mirrormatch?schema=publi
 # NextAuth
 NEXTAUTH_URL="http://localhost:3000"
 NEXTAUTH_SECRET="your-secret-key-here-generate-with-openssl-rand-base64-32"
+AUTH_TRUST_HOST=true
 
 # Email Configuration (for production)
 SMTP_HOST="smtp.example.com"

lib/auth.ts

@@ -9,6 +9,7 @@ if (!nextAuthSecret) {
 }
 
 export const { handlers, auth, signIn, signOut } = NextAuth({
+  trustHost: true,
   providers: [
     Credentials({
       name: "Credentials",