feat(engine): add FinlyticEngine microservice with trade lifecycle, AI reasoning gate, composite scoring, and unit tests

FinlyticEngine/Program.cs

@@ -0,0 +1,65 @@
+using System;
+using FinlyticCore.Database;
+using FinlyticCore.Services;
+using FinlyticEngine.Database;
+using FinlyticEngine.Services.Ai;
+using FinlyticEngine.Services.Derivatives;
+using FinlyticEngine.Services.Mqtt;
+using FinlyticEngine.Services.Scoring;
+using FinlyticEngine.Services.Trading;
+using FinlyticEngine.Util;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+
+var builder = Host.CreateApplicationBuilder(args);
+
+// 1. Register DbContext & Settings Provider
+builder.Services.AddDbContext<EngineDbContext>(options =>
+    options.UseNpgsql(builder.Configuration.GetConnectionString("DefaultConnection")));
+builder.Services.AddScoped<ISettingsDbContext>(sp => sp.GetRequiredService<EngineDbContext>());
+
+// 2. Register Core Services & Logger
+builder.Services.AddSingleton<ISettingsService, SettingsService>();
+builder.Services.AddSingleton(typeof(IFinlyticLogger<>), typeof(FinlyticLogger<>));
+
+// 3. Register HTTP Client & AI Gate
+builder.Services.AddHttpClient<IAiReasoningGateService, AiReasoningGateService>();
+builder.Services.AddSingleton<IAiReasoningGateService, AiReasoningGateService>();
+
+// 4. Register MQTT Client & RPC Bridge
+builder.Services.AddSingleton<EngineMqttClient>();
+builder.Services.AddSingleton<IEngineRpcClient>(sp => sp.GetRequiredService<EngineMqttClient>());
+builder.Services.AddHostedService(sp => sp.GetRequiredService<EngineMqttClient>());
+
+// 5. Register Engine Domain Services
+builder.Services.AddSingleton<ICompositeOpportunityScorer, CompositeOpportunityScorer>();
+builder.Services.AddSingleton<IKnockOutDerivativeResolver, KnockOutDerivativeResolver>();
+builder.Services.AddSingleton<ITradeLifecycleService, TradeLifecycleService>();
+builder.Services.AddSingleton<IEvaluationHistoryService, EvaluationHistoryService>();
+
+// 6. Register Background Poller & Monitoring Services
+builder.Services.AddHostedService<OpportunityPollerBackgroundService>();
+builder.Services.AddHostedService<ActiveTradeMonitoringBackgroundService>();
+
+var host = builder.Build();
+
+// 7. Startup database migrations
+using (var scope = host.Services.CreateScope())
+{
+    try
+    {
+        var context = scope.ServiceProvider.GetRequiredService<EngineDbContext>();
+        var connStr = builder.Configuration.GetConnectionString("DefaultConnection") ?? "";
+        await context.MigrateWithBootstrapAsync(connStr);
+        Console.WriteLine("Database migrations successfully executed for FinlyticEngine.");
+
+    }
+    catch (Exception ex)
+    {
+        Console.WriteLine($"Migration notice on startup: {ex.Message}");
+    }
+}
+
+await host.RunAsync();