Merge branch 'develop' of gitee.com:hezhaohui123/gen2d into feat/async-generate-pipeline

Signed-off-by: 何朝晖 <hezhaohui0807@163.com>

backend/.env.example

@@ -5,6 +5,10 @@
 GEN2D_PORT=8080
 GEN2D_MODE=debug
 
+# 日志配置
+GEN2D_LOG_LEVEL=info    # debug / info / warn / error
+GEN2D_LOG_FORMAT=text   # text / json
+
 # SQLite 数据库路径
 GEN2D_DSN=data/gen2d.db
 
@@ -27,3 +31,16 @@ GEN2D_IMAGE_MODEL=gpt-image-2
 GEN2D_IMAGE_WIDTH=1024
 GEN2D_IMAGE_HEIGHT=1024
 GEN2D_IMAGE_QUALITY=low
+GEN2D_IMAGE_TIMEOUT=120
+GEN2D_IMAGE_MAX_RETRIES=2
+GEN2D_IMAGE_RETRY_DELAY=5
+GEN2D_IMAGE_NUM_IMAGES=1
+GEN2D_IMAGE_STEPS=30
+GEN2D_IMAGE_CFG_SCALE=7.0
+
+# 七牛云对象存储
+GEN2D_QINIU_ACCESS_KEY=your-access-key
+GEN2D_QINIU_SECRET_KEY=your-secret-key
+GEN2D_QINIU_BUCKET=your-bucket-name
+GEN2D_QINIU_CDN_HOST=https://cdn.example.com
+GEN2D_QINIU_USE_HTTPS=true