feature: In-App Simulation Runner (Backend)

VigilCareClinicalAPI/Data/Configurations/PatientConfiguration.cs

@@ -25,6 +25,7 @@ public class PatientConfiguration : IEntityTypeConfiguration<Patient>
             .HasColumnName("name_search_token")
             .HasMaxLength(64);
         builder.Property(p => p.CreatedAt).HasColumnName("created_at").HasDefaultValueSql("NOW()");
+        builder.Property(p => p.IsSimulated).HasColumnName("is_simulated").HasDefaultValue(false);
 
         // MRN uses exact-match unique index — MRN lookups are always equality checks,
         // never LIKE/ILIKE. A B-tree unique index satisfies O(log n) point lookup.
@@ -33,5 +34,9 @@ public class PatientConfiguration : IEntityTypeConfiguration<Patient>
         // at this scale (pg_trgm GIN would be warranted at >500k patients).
         builder.HasIndex(p => p.Mrn).IsUnique();
         builder.HasIndex(p => p.NameSearchToken);
+        // Filtered index keeps Phase 38 simulated-patient purge cheap.
+        builder.HasIndex(p => p.IsSimulated)
+            .HasDatabaseName("IX_Patients_IsSimulated")
+            .HasFilter("is_simulated = true");
     }
 }

VigilCareClinicalAPI/Data/Configurations/SimulationRunConfiguration.cs

@@ -0,0 +1,34 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+
+public class SimulationRunConfiguration : IEntityTypeConfiguration<SimulationRun>
+{
+    public void Configure(EntityTypeBuilder<SimulationRun> builder)
+    {
+        builder.ToTable("simulation_runs");
+        builder.HasKey(r => r.Id);
+        builder.Property(r => r.Id).HasColumnName("id").HasDefaultValueSql("gen_random_uuid()");
+        builder.Property(r => r.ScenarioId).HasColumnName("scenario_id").HasMaxLength(100).IsRequired();
+        builder.Property(r => r.ScenarioName).HasColumnName("scenario_name").HasMaxLength(200).IsRequired();
+        builder.Property(r => r.Speed).HasColumnName("speed");
+        builder.Property(r => r.Status).HasColumnName("status").HasMaxLength(20).IsRequired()
+            .HasConversion(
+                v => v.ToDbString(),
+                v => SimulationRunStatusExtensions.FromDbString(v));
+        builder.Property(r => r.PatientId).HasColumnName("patient_id");
+        builder.Property(r => r.EncounterId).HasColumnName("encounter_id");
+        builder.Property(r => r.StartedByUserId).HasColumnName("started_by_user_id").HasMaxLength(100).IsRequired();
+        builder.Property(r => r.StartedAt).HasColumnName("started_at");
+        builder.Property(r => r.CompletedAt).HasColumnName("completed_at");
+        builder.Property(r => r.ObservationsSent).HasColumnName("observations_sent");
+        builder.Property(r => r.MedicationsSent).HasColumnName("medications_sent");
+        builder.Property(r => r.OrdersPlaced).HasColumnName("orders_placed");
+        builder.Property(r => r.LastOffsetMinutes).HasColumnName("last_offset_minutes");
+        builder.Property(r => r.TotalOffsetMinutes).HasColumnName("total_offset_minutes");
+        builder.Property(r => r.FailureReason).HasColumnName("failure_reason").HasMaxLength(2000);
+
+        builder.HasIndex(r => new { r.Status, r.StartedAt })
+            .IsDescending(false, true)
+            .HasDatabaseName("IX_simulation_runs_status_started_at");
+    }
+}