feat: OTA热更新 — 版本检测API + App端WGT下载安装 + app_versions表

backend/app/schemas/app_version.py

@@ -0,0 +1,14 @@
+"""App 版本 Schema"""
+from pydantic import BaseModel
+
+
+class AppVersionResponse(BaseModel):
+    """返回给 App 的版本信息"""
+    version: str
+    version_code: int
+    has_update: bool
+    wgt_url: str | None = None
+    description: str | None = None
+    force_update: bool = False
+
+    model_config = {"from_attributes": True}