feat: Jobs infrastructure, endpoints, UI and worker prioritization

src/Predictalytics.Infrastructure/Data/AppDbContext.cs

@@ -20,6 +20,7 @@ public class AppDbContext : DbContext
     public DbSet<MarketOutcomePriceSnapshot> MarketOutcomePriceSnapshots => Set<MarketOutcomePriceSnapshot>();
     public DbSet<TraderCategoryPerformance> TraderCategoryPerformances => Set<TraderCategoryPerformance>();
     public DbSet<TradeContext> TradeContexts => Set<TradeContext>();
+    public DbSet<BackgroundJob> BackgroundJobs => Set<BackgroundJob>();
 
     public AppDbContext(DbContextOptions<AppDbContext> options) : base(options) { }
 
@@ -220,5 +221,17 @@ public class AppDbContext : DbContext
             e.Property(ps => ps.Price).HasPrecision(10, 6);
             e.HasOne(ps => ps.MarketOutcome).WithMany().HasForeignKey(ps => ps.MarketOutcomeId).OnDelete(DeleteBehavior.Cascade);
         });
+
+        // BackgroundJob
+        mb.Entity<BackgroundJob>(e =>
+        {
+            e.HasKey(j => j.Id);
+            e.HasIndex(j => j.Status);
+            e.HasIndex(j => j.JobType);
+            e.Property(j => j.JobType).HasConversion<string>().HasMaxLength(64);
+            e.Property(j => j.Status).HasConversion<string>().HasMaxLength(64);
+            e.Property(j => j.ErrorMessage).HasMaxLength(4096);
+            e.HasOne(j => j.Trader).WithMany().HasForeignKey(j => j.TraderId).OnDelete(DeleteBehavior.SetNull);
+        });
     }
 }

src/Predictalytics.Infrastructure/DependencyInjection.cs

@@ -66,6 +66,7 @@ public static class DependencyInjection
         services.AddScoped<IMarketRepository, MarketRepository>();
         services.AddScoped<IWatchlistRepository, WatchlistRepository>();
         services.AddScoped<IAlertRepository, AlertRepository>();
+        services.AddScoped<IJobRepository, JobRepository>();
 
         // Application Services
         services.AddScoped<IPositionPnLEngine, PositionPnLEngine>();

src/Predictalytics.Infrastructure/Migrations/AppDbContextModelSnapshot.cs

@@ -67,6 +67,51 @@ namespace Predictalytics.Infrastructure.Migrations
                     b.ToTable("Alerts");
                 });
 
+            modelBuilder.Entity("Predictalytics.Domain.Entities.BackgroundJob", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    MySqlPropertyBuilderExtensions.UseMySqlIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime?>("CompletedAt")
+                        .HasColumnType("datetime(6)");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("datetime(6)");
+
+                    b.Property<string>("ErrorMessage")
+                        .HasMaxLength(4096)
+                        .HasColumnType("varchar(4096)");
+
+                    b.Property<string>("JobType")
+                        .IsRequired()
+                        .HasMaxLength(64)
+                        .HasColumnType("varchar(64)");
+
+                    b.Property<DateTime?>("StartedAt")
+                        .HasColumnType("datetime(6)");
+
+                    b.Property<string>("Status")
+                        .IsRequired()
+                        .HasMaxLength(64)
+                        .HasColumnType("varchar(64)");
+
+                    b.Property<int?>("TraderId")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("JobType");
+
+                    b.HasIndex("Status");
+
+                    b.HasIndex("TraderId");
+
+                    b.ToTable("BackgroundJobs");
+                });
+
             modelBuilder.Entity("Predictalytics.Domain.Entities.Event", b =>
                 {
                     b.Property<int>("Id")
@@ -795,6 +840,16 @@ namespace Predictalytics.Infrastructure.Migrations
                     b.Navigation("Trader");
                 });
 
+            modelBuilder.Entity("Predictalytics.Domain.Entities.BackgroundJob", b =>
+                {
+                    b.HasOne("Predictalytics.Domain.Entities.Trader", "Trader")
+                        .WithMany()
+                        .HasForeignKey("TraderId")
+                        .OnDelete(DeleteBehavior.SetNull);
+
+                    b.Navigation("Trader");
+                });
+
             modelBuilder.Entity("Predictalytics.Domain.Entities.Market", b =>
                 {
                     b.HasOne("Predictalytics.Domain.Entities.Event", "Event")