Initial Commit

OtaFleet.Api/Data/Entities/Deployment.cs

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+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace OtaFleet.Api.Data.Entities;
+
+public class Deployment
+{
+    public int Id { get; set; }
+    
+    public int UpdateId { get; set; }
+    
+    [ForeignKey("UpdateId")]
+    public FirmwareUpdate Update { get; set; } = null!;
+    
+    public string? TargetVin { get; set; }
+    
+    public int? TargetGroupId { get; set; }
+    
+    public string Status { get; set; } = "Pending"; // Pending, InProgress, Completed, Failed
+    
+    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+}

OtaFleet.Api/Data/Entities/FirmwareUpdate.cs

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+using System.ComponentModel.DataAnnotations;
+
+namespace OtaFleet.Api.Data.Entities;
+
+public class FirmwareUpdate
+{
+    public int Id { get; set; }
+    
+    [Required]
+    public string Version { get; set; } = string.Empty;
+    
+    public string? Description { get; set; }
+    
+    [Required]
+    public string FilePath { get; set; } = string.Empty;
+    
+    public DateTime UploadedAt { get; set; } = DateTime.UtcNow;
+}

OtaFleet.Api/Data/Entities/Vehicle.cs

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+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace OtaFleet.Api.Data.Entities;
+
+public class Vehicle
+{
+    [Key]
+    public string Vin { get; set; } = string.Empty;
+    
+    public string Status { get; set; } = "Offline"; // Online, Offline, Updating
+    
+    public string CurrentVersion { get; set; } = "1.0.0";
+    
+    public DateTime LastHeartbeat { get; set; }
+    
+    public int? GroupId { get; set; }
+    
+    [ForeignKey("GroupId")]
+    public VehicleGroup? Group { get; set; }
+}

OtaFleet.Api/Data/Entities/VehicleGroup.cs

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+using System.ComponentModel.DataAnnotations;
+
+namespace OtaFleet.Api.Data.Entities;
+
+public class VehicleGroup
+{
+    public int Id { get; set; }
+    
+    [Required]
+    public string Name { get; set; } = string.Empty;
+    
+    public string? Description { get; set; }
+    
+    public List<Vehicle> Vehicles { get; set; } = new();
+}