新增车辆表及OTA权限与逻辑优化

新增车辆任务与报警表，完善实体与DbContext配置。细化OTA权限校验，增强回传会话IP安全。优化OTA上传与设置面板，调度器支持重启恢复。报警采集逻辑支持历史分段。

MiGu.Server/Controllers/OtaController.cs

@@ -48,7 +48,10 @@ public class OtaController : ControllerBase
         if (string.Equals(Scope, "Platform", StringComparison.OrdinalIgnoreCase)) return true;
         var ops = User.FindFirst("ops")?.Value ?? "";
         var set = ops.Split(' ', StringSplitOptions.RemoveEmptyEntries);
-        return set.Contains("*") || set.Any(o => o.StartsWith("ops.ota", StringComparison.OrdinalIgnoreCase));
+        return set.Contains("*")
+               || set.Contains("ops.ota")
+               || set.Contains("ops.ota.write")
+               || set.Any(o => o.StartsWith("ops.ota.", StringComparison.OrdinalIgnoreCase));
     }
 
     private bool DenyWrite(out ActionResult denied)
@@ -147,12 +150,32 @@ public class OtaController : ControllerBase
             var receiveBase = $"{baseUrl.TrimEnd('/')}/api/ota/receive";
             var time = DateTime.Now.ToString("yyyyMMddHHmmss");
             await _wd.TriggerPullAsync(car.Ip, receiveBase, time, ct);
-            // 等待文件落盘
+            // 等待文件落盘：绝对超时 + 收到文件后的空闲窗口，避免首个组件到达就清会话导致半包
             await Task.Delay(1500, ct);
-            for (var i = 0; i < 40; i++)
+            var deadline = DateTime.UtcNow.AddSeconds(90);
+            var idleAfterReceive = TimeSpan.FromSeconds(8);
+            var lastCount = 0;
+            DateTime? lastProgressAt = null;
+            while (DateTime.UtcNow < deadline)
             {
+                ct.ThrowIfCancellationRequested();
                 var info = _store.ScanPackage(pkgId);
-                if (info.Components.Count > 0) break;
+                if (info.Components.Count > lastCount)
+                {
+                    lastCount = info.Components.Count;
+                    lastProgressAt = DateTime.UtcNow;
+                }
+                else if (_store.TryGetLastReceiveAt(car.Ip, out var recvAt) &&
+                         (lastProgressAt == null || recvAt > lastProgressAt.Value))
+                {
+                    lastProgressAt = recvAt;
+                }
+
+                if (lastCount > 0 &&
+                    lastProgressAt != null &&
+                    DateTime.UtcNow - lastProgressAt.Value >= idleAfterReceive)
+                    break;
+
                 await Task.Delay(500, ct);
             }
             _store.ClearActivePull(car.Ip);