Initial push

samples/SampleWebApi/Program.cs

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+using Microsoft.EntityFrameworkCore;
+using SqrtSpace.SpaceTime.AspNetCore;
+using SqrtSpace.SpaceTime.Core;
+using SqrtSpace.SpaceTime.EntityFramework;
+using SqrtSpace.SpaceTime.Linq;
+using SampleWebApi.Data;
+using SampleWebApi.Services;
+
+var builder = WebApplication.CreateBuilder(args);
+
+// Add services to the container
+builder.Services.AddControllers();
+builder.Services.AddEndpointsApiExplorer();
+builder.Services.AddSwaggerGen(c =>
+{
+    c.SwaggerDoc("v1", new() { 
+        Title = "SqrtSpace SpaceTime Sample API", 
+        Version = "v1",
+        Description = "Demonstrates memory-efficient data processing using √n space-time tradeoffs"
+    });
+});
+
+// Configure SpaceTime services with memory-aware settings
+builder.Services.AddSpaceTime(options =>
+{
+    options.EnableCheckpointing = true;
+    options.CheckpointDirectory = Path.Combine(Path.GetTempPath(), "spacetime-sample");
+    options.CheckpointStrategy = CheckpointStrategy.SqrtN;
+    options.DefaultChunkSize = 1000;
+    options.StreamingBufferSize = 64 * 1024; // 64KB
+    options.ExternalStorageDirectory = Path.Combine(Path.GetTempPath(), "spacetime-external");
+});
+
+// Add Entity Framework with in-memory database for demo
+builder.Services.AddDbContext<SampleDbContext>(options =>
+{
+    options.UseInMemoryDatabase("SampleDb");
+    // SpaceTime optimizations are available via EF integration
+});
+
+// Add application services
+builder.Services.AddScoped<IProductService, ProductService>();
+builder.Services.AddScoped<IOrderAnalyticsService, OrderAnalyticsService>();
+builder.Services.AddHostedService<DataGeneratorService>();
+
+// Configure memory limits
+builder.Services.Configure<SampleWebApi.Models.MemoryOptions>(builder.Configuration.GetSection("MemoryOptions"));
+
+var app = builder.Build();
+
+// Configure the HTTP request pipeline
+if (app.Environment.IsDevelopment())
+{
+    app.UseSwagger();
+    app.UseSwaggerUI();
+}
+
+app.UseHttpsRedirection();
+
+// Enable SpaceTime middleware for automatic memory management
+app.UseSpaceTime();
+
+app.MapControllers();
+
+// Ensure database is created and seeded
+using (var scope = app.Services.CreateScope())
+{
+    var context = scope.ServiceProvider.GetRequiredService<SampleDbContext>();
+    await DataSeeder.SeedAsync(context);
+}
+
+app.Run();