Remove .env from version control

self_hosted_env/.env

-# PostgreSQL
-POSTGRES_USER=db_admin
-POSTGRES_PASSWORD=7h%yAv3)5£U*8G
-POSTGRES_DB=embeddings_db
-
-# MinIO
-MINIO_ROOT_USER=minio_admin
-MINIO_ROOT_PASSWORD=F2v9(41}PRPiG|
-
-# n8n
-N8N_BASIC_AUTH_USER=n8n_admin
-N8N_BASIC_AUTH_PASSWORD=77Y?HRQw8g|1:7
-N8N_HOST=localhost
-N8N_PORT=5678
-N8N_PROTOCOL=http
-
-# Your n8n webhook 
-WEBHOOK_URL=http://n8n:5678/
-N8N_WEBHOOK_URL=http://n8n:5678/webhook-test/b470cc56-de9b-4b92-9c50-39bac33143cc
-# MinIO endpoint & bucket for Python script
-MINIO_ENDPOINT=http://minio:9000
-MINIO_ACCESS_KEY=minio_admin
-MINIO_SECRET_KEY=F2v9(41}PRPiG|
-MINIO_BUCKET=conversation
-
-# Timezone (as before)
-GENERIC_TIMEZONE=UTC