Add domestic vendor push infrastructure

backend/MiaoJiZhang.Domain/Entities/Push.cs

@@ -0,0 +1,155 @@
+namespace MiaoJiZhang.Domain.Entities;
+
+public static class PushProviders
+{
+    public const string Huawei = "huawei";
+    public const string Honor = "honor";
+    public const string Xiaomi = "xiaomi";
+    public const string Oppo = "oppo";
+    public const string Vivo = "vivo";
+    public const string Meizu = "meizu";
+
+    public static readonly IReadOnlySet<string> All = new HashSet<string>(
+        [Huawei, Honor, Xiaomi, Oppo, Vivo, Meizu],
+        StringComparer.OrdinalIgnoreCase);
+}
+
+public static class PushCategories
+{
+    public const string System = "system";
+    public const string Budget = "budget";
+    public const string Operations = "operations";
+
+    public static readonly IReadOnlySet<string> All = new HashSet<string>(
+        [System, Budget, Operations],
+        StringComparer.OrdinalIgnoreCase);
+}
+
+public static class PushActions
+{
+    public const string None = "none";
+    public const string Home = "home";
+    public const string Budget = "budget";
+    public const string Update = "update";
+
+    public static readonly IReadOnlySet<string> All = new HashSet<string>(
+        [None, Home, Budget, Update],
+        StringComparer.OrdinalIgnoreCase);
+}
+
+public static class PushMessageStates
+{
+    public const string Draft = "draft";
+    public const string Scheduled = "scheduled";
+    public const string Queued = "queued";
+    public const string Sending = "sending";
+    public const string Completed = "completed";
+    public const string PartiallyFailed = "partially_failed";
+    public const string Cancelled = "cancelled";
+}
+
+public static class PushDeliveryStates
+{
+    public const string Queued = "queued";
+    public const string Sending = "sending";
+    public const string Accepted = "accepted";
+    public const string Failed = "failed";
+    public const string Skipped = "skipped";
+}
+
+public class PushDevice
+{
+    public long Id { get; set; }
+    public long UserId { get; set; }
+    public User User { get; set; } = null!;
+    public string InstallationId { get; set; } = null!;
+    public string Provider { get; set; } = null!;
+    public string TokenCiphertext { get; set; } = null!;
+    public string TokenHash { get; set; } = null!;
+    public string UnbindTokenHash { get; set; } = null!;
+    public string PackageName { get; set; } = null!;
+    public string Flavor { get; set; } = null!;
+    public string AppVersion { get; set; } = null!;
+    public int VersionCode { get; set; }
+    public bool NotificationsAllowed { get; set; }
+    public bool IsActive { get; set; } = true;
+    public string? DisabledReason { get; set; }
+    public DateTime CreatedAt { get; set; }
+    public DateTime UpdatedAt { get; set; }
+    public DateTime LastSeenAt { get; set; }
+
+    public List<PushDelivery> Deliveries { get; set; } = [];
+}
+
+public class UserPushPreference
+{
+    public long Id { get; set; }
+    public long UserId { get; set; }
+    public User User { get; set; } = null!;
+    public string Category { get; set; } = null!;
+    public bool IsEnabled { get; set; }
+    public DateTime UpdatedAt { get; set; }
+}
+
+public class PushMessage
+{
+    public long Id { get; set; }
+    public string PublicId { get; set; } = null!;
+    public string Source { get; set; } = null!;
+    public string State { get; set; } = PushMessageStates.Draft;
+    public string Category { get; set; } = null!;
+    public string Title { get; set; } = null!;
+    public string Body { get; set; } = null!;
+    public string Action { get; set; } = PushActions.None;
+    public string? EntityId { get; set; }
+    public long? TargetUserId { get; set; }
+    public string Flavor { get; set; } = "production";
+    public string? ProviderFilter { get; set; }
+    public int? MinVersionCode { get; set; }
+    public int? MaxVersionCode { get; set; }
+    public int TtlSeconds { get; set; }
+    public bool IsTest { get; set; }
+    public long? TestDeviceId { get; set; }
+    public DateTime? ScheduledAt { get; set; }
+    public DateTime CreatedAt { get; set; }
+    public DateTime UpdatedAt { get; set; }
+    public DateTime? StartedAt { get; set; }
+    public DateTime? CompletedAt { get; set; }
+    public DateTime? CancelledAt { get; set; }
+
+    public List<PushDelivery> Deliveries { get; set; } = [];
+}
+
+public class PushDelivery
+{
+    public long Id { get; set; }
+    public long PushMessageId { get; set; }
+    public PushMessage PushMessage { get; set; } = null!;
+    public long PushDeviceId { get; set; }
+    public PushDevice PushDevice { get; set; } = null!;
+    public long UserId { get; set; }
+    public string Provider { get; set; } = null!;
+    public string State { get; set; } = PushDeliveryStates.Queued;
+    public int AttemptCount { get; set; }
+    public DateTime NextAttemptAt { get; set; }
+    public string? LeaseId { get; set; }
+    public DateTime? LeaseExpiresAt { get; set; }
+    public string? ProviderMessageId { get; set; }
+    public string? ErrorCode { get; set; }
+    public string? ErrorMessage { get; set; }
+    public DateTime CreatedAt { get; set; }
+    public DateTime UpdatedAt { get; set; }
+    public DateTime? AcceptedAt { get; set; }
+}
+
+public class BudgetNotificationReceipt
+{
+    public long Id { get; set; }
+    public long UserId { get; set; }
+    public User User { get; set; } = null!;
+    public long BudgetId { get; set; }
+    public Budget Budget { get; set; } = null!;
+    public int Period { get; set; }
+    public int Threshold { get; set; }
+    public DateTime CreatedAt { get; set; }
+}

backend/MiaoJiZhang.Domain/Entities/User.cs

@@ -38,9 +38,11 @@ public class User
     public DateTime CreatedAt { get; set; }
     public DateTime? LastLoginAt { get; set; }
 
-    public List<Ledger> Ledgers { get; set; } = [];
-    public List<UserFeaturePermission> FeaturePermissions { get; set; } = [];
-}
+    public List<Ledger> Ledgers { get; set; } = [];
+    public List<UserFeaturePermission> FeaturePermissions { get; set; } = [];
+    public List<PushDevice> PushDevices { get; set; } = [];
+    public List<UserPushPreference> PushPreferences { get; set; } = [];
+}
 
 /// <summary>AI 伙伴设置（形象/昵称/性格/滑杆），1:1 User</summary>
 public class UserFeaturePermission