chore: remove test trigger file

deployment/stacks/application/.env.example

@@ -13,9 +13,9 @@ APP_DEBUG=false
 APP_URL=https://michaelschiemer.de
 
 # Database Configuration
-# Note: MySQL runs in Stack 5 (PostgreSQL) or external server
-DB_HOST=mysql
-DB_PORT=3306
+# Note: Using PostgreSQL from postgres stack
+DB_HOST=postgres
+DB_PORT=5432
 DB_NAME=michaelschiemer
 DB_USER=appuser
 DB_PASS=<generate-with-openssl-rand-base64-32>