PR #252: redis_url配置修复

fix: 修复worker配置中redis_url字段未正确映射REDIS_URL环境变量

Signed-off-by: CI Bot <bot@xiaoxiajianji.com>

apps/worker/worker_app/core/config.py

@@ -17,6 +17,7 @@ class WorkerSettings(BaseSettings):
     database_pool_recycle: int = 3600
     environment: str = "development"
     auto_create_schema: bool = False
+    redis_url: str = "redis://redis:6379/0"
 
     # 渲染引擎选择：legacy=旧VideoComposeService，unified=新UnifiedRenderService
     render_engine: str = "legacy"