changed auth method

.env.example

@@ -13,12 +13,8 @@ CORS_ALLOWED_ORIGINS=http://localhost:3000
 # URL of your Vaultwarden instance (no trailing slash)
 VAULTWARDEN_URL=https://vault.yourdomain.com
 
-# Authentication Method 1: API Keys (RECOMMENDED - doesn't expire)
-VAULTWARDEN_CLIENT_ID=user.xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
-VAULTWARDEN_CLIENT_SECRET=your-long-client-secret-here
-
-# Authentication Method 2: Session Token (LEGACY - expires after some time)
-# VAULTWARDEN_ACCESS_TOKEN=your-session-token-here
+# Authentication
+VAULTWARDEN_ACCESS_TOKEN=your-session-token-here
 
 # Performance & Caching
 # How long to cache secrets in memory (reduces API calls)