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

backend/app/models/__init__.py

@@ -5,6 +5,7 @@ from app.models.product import Product
 from app.models.task import Task, TaskRecord
 from app.models.task_log import TaskLog
 from app.models.notification import Notification
+from app.models.app_version import AppVersion
 __all__ = [
     "Base",
     "ProductionOrder",
@@ -13,4 +14,5 @@ __all__ = [
     "TaskRecord",
     "TaskLog",
     "Notification",
+    "AppVersion",
 ]

backend/app/models/app_version.py

@@ -0,0 +1,44 @@
+"""App 版本管理模型 — 用于 OTA 热更新"""
+import uuid
+from datetime import datetime
+from sqlalchemy import String, DateTime, Boolean, Text, Integer
+from sqlalchemy.dialects.postgresql import UUID
+from sqlalchemy.orm import Mapped, mapped_column
+
+from app.models.base import Base
+from app.core.time_utils import get_beijing_time
+
+
+class AppVersion(Base):
+    __tablename__ = "app_versions"
+
+    id: Mapped[uuid.UUID] = mapped_column(
+        UUID(as_uuid=True), primary_key=True, default=uuid.uuid4,
+    )
+
+    version: Mapped[str] = mapped_column(
+        String(20), nullable=False, unique=True, comment="版本号，如 T1.0.1",
+    )
+
+    version_code: Mapped[int] = mapped_column(
+        Integer, nullable=False, default=100, comment="数字版本号，用于比较",
+    )
+
+    wgt_url: Mapped[str] = mapped_column(
+        String(500), nullable=False, comment="WGT 升级包下载地址",
+    )
+
+    description: Mapped[str | None] = mapped_column(
+        Text, nullable=True, comment="更新说明",
+    )
+
+    is_active: Mapped[bool] = mapped_column(
+        Boolean, default=True, comment="是否启用",
+    )
+
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), default=get_beijing_time,
+    )
+
+    def __repr__(self) -> str:
+        return f"<AppVersion {self.version}>"