feat: 完善模型平台相关功能

.env.example

@@ -1,12 +1,21 @@
-COMPOSE_PROJECT_NAME=model-platform
+COMPOSE_PROJECT_NAME=model-platform-develop
 
 # External port of the Nginx gateway. Only Nginx is exposed to the host
 # (architecture §2.2); backend/runtime/schedule stay on the Docker internal
 # network. Override here to expose Nginx on a different host port.
-GATEWAY_PORT=8888
+GATEWAY_PORT=8890
 
-# MySQL connection URI (async SQLAlchemy driver)
-DATABASE_URL=mysql+asyncmy://model_platform:ChangeMe_MySQL_App_2026@mysql:3306/model_platform?charset=utf8mb4
+# External MySQL. URL-encode reserved characters in DATABASE_URL.
+MYSQL_HOST=127.0.0.1
+MYSQL_PORT=3306
+MYSQL_USER=root
+MYSQL_PASSWORD=change-me
+MYSQL_DATABASE=model_platform
+DATABASE_URL=mysql+asyncmy://root:change-me@127.0.0.1:3306/model_platform?charset=utf8mb4
+
+# Demo login is only intended for this self-hosted development UI.
+DEMO_AUTH_ENABLED=true
+JWT_SECRET=change-this-development-secret
 
 # Object storage (S3-compatible, RustFS).
 # RUSTFS_ENDPOINT is the single upstream URL consumed by all 4 services:
@@ -19,8 +28,12 @@ DATABASE_URL=mysql+asyncmy://model_platform:ChangeMe_MySQL_App_2026@mysql:3306/m
 #   RUSTFS_WORKSPACE_BUCKET — workspace files (notebooks, scripts, working
 #     copies); layout is ``s3://<bucket>/<workspace_id>/...``.
 # Future: RUSTFS_VERSION_BUCKET, RUSTFS_RUN_LOG_BUCKET, ...
-RUSTFS_ENDPOINT=http://rustfs:9000
-RUSTFS_ACCESS_KEY=modelplatform
-RUSTFS_SECRET_KEY=ChangeMe_RustFS_2026
+RUSTFS_HOST=127.0.0.1
+RUSTFS_PORT=9000
+RUSTFS_ENDPOINT=http://127.0.0.1:9000
+RUSTFS_ACCESS_KEY=change-me
+RUSTFS_SECRET_KEY=change-me
 RUSTFS_WORKSPACE_BUCKET=workspaces
+RUSTFS_VERSION_BUCKET=versions
+RUSTFS_RUN_LOG_BUCKET=run-logs