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

FinlyticEngine/Dockerfile

@@ -0,0 +1,22 @@
+FROM mcr.microsoft.com/dotnet/runtime:10.0 AS base
+USER $APP_UID
+WORKDIR /app
+
+FROM mcr.microsoft.com/dotnet/sdk:10.0 AS build
+ARG BUILD_CONFIGURATION=Release
+WORKDIR /src
+COPY ["FinlyticEngine/FinlyticEngine.csproj", "FinlyticEngine/"]
+COPY ["FinlyticCore/FinlyticCore.csproj", "FinlyticCore/"]
+RUN dotnet restore "FinlyticEngine/FinlyticEngine.csproj"
+COPY . .
+WORKDIR "/src/FinlyticEngine"
+RUN dotnet build "FinlyticEngine.csproj" -c $BUILD_CONFIGURATION -o /app/build
+
+FROM build AS publish
+ARG BUILD_CONFIGURATION=Release
+RUN dotnet publish "FinlyticEngine.csproj" -c $BUILD_CONFIGURATION -o /app/publish /p:UseAppHost=false
+
+FROM base AS final
+WORKDIR /app
+COPY --from=publish /app/publish .
+ENTRYPOINT ["dotnet", "FinlyticEngine.dll"]