initialize admin panel and necessry pages

src/GreenHome.Application/Dtos/Admin/AdminDtos.cs

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+using Domain = GreenHome.Domain;
+
+namespace GreenHome.Application.Dtos.Admin;
+
+// ==================== Dashboard ====================
+
+public sealed class AdminDashboardDto
+{
+    public int TotalUsers { get; set; }
+    public int TotalDevices { get; set; }
+    public int OnlineDevices { get; set; }
+    public int OfflineDevices { get; set; }
+    public int AlertsLast24h { get; set; }
+    public int SmsLast7Days { get; set; }
+    public int AiQueriesLast7Days { get; set; }
+
+    /// <summary>تعداد SMS بر اساس روز برای ۷ روز اخیر (sparkline)</summary>
+    public IReadOnlyList<UsageDayDto> SmsDailyLast7Days { get; set; } = [];
+}
+
+// ==================== Users ====================
+
+public sealed class AdminUserFilter
+{
+    public string? Search { get; set; }
+    public int Page { get; set; } = 1;
+    public int PageSize { get; set; } = 20;
+}
+
+public sealed class AdminUserListItemDto
+{
+    public int Id { get; set; }
+    public string Name { get; set; } = string.Empty;
+    public string Family { get; set; } = string.Empty;
+    public string Mobile { get; set; } = string.Empty;
+    public Domain.UserRole Role { get; set; }
+    public bool IsDisabled { get; set; }
+    public int DeviceCount { get; set; }
+    public DateTime? LastLoginAt { get; set; }
+    public DateTime CreatedAt { get; set; }
+}
+
+public sealed class AdminUserDetailDto
+{
+    public int Id { get; set; }
+    public string Name { get; set; } = string.Empty;
+    public string Family { get; set; } = string.Empty;
+    public string Mobile { get; set; } = string.Empty;
+    public Domain.UserRole Role { get; set; }
+    public bool IsDisabled { get; set; }
+    public DateTime CreatedAt { get; set; }
+    public DateTime? LastLoginAt { get; set; }
+    public IReadOnlyList<AdminDeviceListItemDto> Devices { get; set; } = [];
+}
+
+public sealed class ChangeUserRoleRequest
+{
+    public Domain.UserRole Role { get; set; }
+}
+
+public sealed class ChangeUserStatusRequest
+{
+    public bool IsEnabled { get; set; }
+}
+
+/// <summary>
+/// نتیجه تغییر نقش/وضعیت کاربر توسط admin.
+/// </summary>
+public enum UserMutationOutcome
+{
+    Ok,
+    NotFound,
+    ConflictSelf,
+    ConflictLastAdmin
+}
+
+// ==================== Devices ====================
+
+public sealed class AdminDeviceFilter
+{
+    public string? Search { get; set; }
+    public int Page { get; set; } = 1;
+    public int PageSize { get; set; } = 20;
+}
+
+public sealed class AdminDeviceListItemDto
+{
+    public int Id { get; set; }
+    public string DeviceName { get; set; } = string.Empty;
+    public string Location { get; set; } = string.Empty;
+    public string OwnerName { get; set; } = string.Empty;
+    public string OwnerMobile { get; set; } = string.Empty;
+    public bool IsOnline { get; set; }
+    public DateTime? LastTelemetryAt { get; set; }
+    public decimal? TemperatureC { get; set; }
+    public decimal? HumidityPercent { get; set; }
+}
+
+public sealed class AdminDeviceDetailDto
+{
+    public int Id { get; set; }
+    public string DeviceName { get; set; } = string.Empty;
+    public string Location { get; set; } = string.Empty;
+    public string OwnerName { get; set; } = string.Empty;
+    public string OwnerFamily { get; set; } = string.Empty;
+    public string OwnerMobile { get; set; } = string.Empty;
+    public bool IsOnline { get; set; }
+    public int MemberCount { get; set; }
+
+    public string? ProductType { get; set; }
+    public string? Province { get; set; }
+    public string? City { get; set; }
+    public string? DevicePhoneNumber { get; set; }
+    public int? UploadIntervalMin { get; set; }
+    public int? RelayCount { get; set; }
+
+    public IReadOnlyList<TelemetryDto> LastTelemetry { get; set; } = [];
+}
+
+// ==================== Usage ====================
+
+public sealed class UsageDayDto
+{
+    public DateTime Date { get; set; }
+    public int SmsCount { get; set; }
+    public int VoiceCallCount { get; set; }
+    public int AiQueryCount { get; set; }
+    public int AiTokenCount { get; set; }
+}