diff --git a/backend/.env.example b/backend/.env.example
deleted file mode 100644
index 436987d..0000000
--- a/backend/.env.example
+++ /dev/null
@@ -1,9 +0,0 @@
-APP_NAME=YG Fine-Tune Platform API
-APP_ENV=local
-API_PREFIX=/api
-LOG_LEVEL=INFO
-LOG_DIR=./logs
-LOG_FILE_PREFIX=backend
-LOG_ERROR_FILE_PREFIX=error
-LOG_MAX_BYTES=20971520
-LOG_RETENTION_DAYS=10
diff --git a/docker/app/.env.example b/docker/app/.env.example
deleted file mode 100644
index d10ccb9..0000000
--- a/docker/app/.env.example
+++ /dev/null
@@ -1,46 +0,0 @@
-APP_ENV=prod
-APP_NAME=YG Fine-Tune Platform API
-MODELTF_ROUTE_PREFIX=/modelTF
-CORS_ALLOW_ORIGINS=http://localhost:16801,http://127.0.0.1:16801
-
-FRONTEND_IMAGE=yg-ft-frontend-runtime:latest
-BACKEND_API_IMAGE=yg-ft-backend-api:latest
-
-# Five-digit host ports exposed outside the application server.
-FRONTEND_PORT=16801
-BACKEND_API_PORT=17861
-POSTGRES_PORT=15432
-REDIS_PORT=16379
-
-POSTGRES_DB=yg_ft
-POSTGRES_USER=yg_ft
-POSTGRES_PASSWORD=change_me
-DATABASE_URL=postgresql+psycopg://yg_ft:change_me@postgres:5432/yg_ft
-
-REDIS_URL=redis://redis:6379/0
-
-# Development uses the built-in PostgreSQL/Redis services in docker-compose.yml.
-# For enterprise infrastructure, replace DATABASE_URL/REDIS_URL and remove or disable those services.
-USE_BUILTIN_POSTGRES=true
-USE_BUILTIN_REDIS=true
-
-LOG_LEVEL=INFO
-LOG_DIR=/opt/yg-ft/logs/backend
-LOG_FILE_PREFIX=backend
-LOG_ERROR_FILE_PREFIX=error
-LOG_MAX_BYTES=20971520
-LOG_RETENTION_DAYS=10
-
-BACKEND_PROXY_PASS=http://backend-api:8000
-
-# Split deployment: set these to the compute server address, for example http://10.10.20.31:19100.
-COMPUTE_API_BASE_URL=http://compute-api:9100
-COMPUTE_SERVICE_TOKEN=change_me
-FILE_GATEWAY_BASE_URL=http://compute-api:9101
-
-# The application side polls Compute API for job state to avoid opening reverse network access.
-COMPUTE_MODE=real
-COMPUTE_STATUS_SYNC_MODE=polling
-COMPUTE_POLL_INTERVAL_SECONDS=3
-COMPUTE_POLL_BATCH_SIZE=100
-COMPUTE_REQUEST_TIMEOUT_SECONDS=5