fix(worker): 统一OSS配置读取为SharedSettings，解决oss_helpers读不到.env配置的问题

apps/worker/video_processing/oss_helpers.py

@@ -15,6 +15,8 @@ from urllib.parse import urlparse
 
 import oss2
 
+from packages.shared.config import get_shared_settings
+
 logger = logging.getLogger(__name__)
 
 # OSS 上传配置
@@ -31,14 +33,18 @@ OSS_MULTIPART_NUM_THREADS = 3  # 分片上传并发数
 def oss_settings() -> tuple[str, str, str, str] | None:
     """获取 OSS 配置。
 
+    统一使用 SharedSettings 读取配置，与 SharedStorageService 保持一致，
+    支持从 .env 文件加载，避免两套配置路径不一致。
+
     Returns:
         (access_key_id, access_key_secret, endpoint, bucket_name) 元组，
         配置缺失时返回 None。
     """
-    access_key_id = os.getenv("OSS_ACCESS_KEY_ID")
-    access_key_secret = os.getenv("OSS_ACCESS_KEY_SECRET")
-    endpoint = os.getenv("OSS_ENDPOINT")
-    bucket_name = os.getenv("OSS_BUCKET_NAME")
+    settings = get_shared_settings()
+    access_key_id = settings.oss_access_key_id
+    access_key_secret = settings.oss_access_key_secret
+    endpoint = settings.oss_endpoint
+    bucket_name = settings.oss_bucket_name
     if not all([access_key_id, access_key_secret, endpoint, bucket_name]):
         return None
     return access_key_id, access_key_secret, endpoint, bucket_name