feat: strengthen P0 security and operations

Tiku.Application/Jobs/BackgroundJobModels.cs

@@ -3,23 +3,34 @@ using Tiku.Domain.Operations;
 
 namespace Tiku.Application.Jobs;
 
+public sealed class BackgroundJobException(string code, string message) : Exception(message)
+{
+    public string Code { get; } = code;
+}
+
 public sealed record CreateBackgroundJobCommand(
     Guid TenantId,
     string JobType,
     JsonElement Payload,
     DateTimeOffset? RunAfter = null,
-    int MaxRetries = 3);
+    int MaxRetries = 3,
+    string? IdempotencyKey = null,
+    bool IsSystemJob = false);
 
 public sealed record BackgroundJobItem(
     Guid Id,
     Guid TenantId,
     string JobType,
+    string? IdempotencyKey,
     BackgroundJobStatus Status,
     int RetryCount,
     int MaxRetries,
     DateTimeOffset? RunAfter,
     DateTimeOffset? StartedAt,
     DateTimeOffset? CompletedAt,
+    DateTimeOffset? CancellationRequestedAt,
+    Guid? CancellationRequestedBy,
+    string? CancellationReason,
     string? LastError,
     Guid? OutputAssetId,
     JsonElement Result);
@@ -48,4 +59,29 @@ public interface IBackgroundJobService
         string? jobType = null,
         int limit = 50,
         CancellationToken cancellationToken = default);
+
+    Task<BackgroundJobItem?> GetAsync(
+        Guid jobId,
+        Guid? tenantId,
+        CancellationToken cancellationToken = default);
+
+    Task<IReadOnlyCollection<BackgroundJobItem>> ListPlatformAsync(
+        Guid? tenantId = null,
+        string? jobType = null,
+        BackgroundJobStatus? status = null,
+        int limit = 100,
+        CancellationToken cancellationToken = default);
+
+    Task<BackgroundJobItem> RequestCancellationAsync(
+        Guid jobId,
+        Guid? tenantId,
+        Guid actorUserId,
+        string reason,
+        CancellationToken cancellationToken = default);
+
+    Task<BackgroundJobItem> RetryAsync(
+        Guid jobId,
+        Guid? tenantId,
+        Guid actorUserId,
+        CancellationToken cancellationToken = default);
 }