chore: initial commit of TaskTracker project

Existing ASP.NET API with vanilla JS SPA, WindowWatcher, Chrome extension, and MCP server.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

TaskTracker.Api/Program.cs

@@ -0,0 +1,58 @@
+using Microsoft.EntityFrameworkCore;
+using TaskTracker.Core.Interfaces;
+using TaskTracker.Infrastructure.Data;
+using TaskTracker.Infrastructure.Repositories;
+
+var builder = WebApplication.CreateBuilder(args);
+
+// EF Core
+builder.Services.AddDbContext<TaskTrackerDbContext>(options =>
+    options.UseSqlServer(builder.Configuration.GetConnectionString("DefaultConnection")));
+
+// Repositories
+builder.Services.AddScoped<ITaskRepository, TaskRepository>();
+builder.Services.AddScoped<IContextEventRepository, ContextEventRepository>();
+builder.Services.AddScoped<IAppMappingRepository, AppMappingRepository>();
+
+// Controllers + JSON
+builder.Services.AddControllers()
+    .AddJsonOptions(o =>
+    {
+        o.JsonSerializerOptions.Converters.Add(new System.Text.Json.Serialization.JsonStringEnumConverter());
+        o.JsonSerializerOptions.ReferenceHandler = System.Text.Json.Serialization.ReferenceHandler.IgnoreCycles;
+    });
+
+// Swagger
+builder.Services.AddEndpointsApiExplorer();
+builder.Services.AddSwaggerGen();
+
+// CORS — allow Chrome extension and local MCP server
+builder.Services.AddCors(options =>
+{
+    options.AddDefaultPolicy(policy =>
+    {
+        policy.AllowAnyOrigin()
+              .AllowAnyHeader()
+              .AllowAnyMethod();
+    });
+});
+
+var app = builder.Build();
+
+// Auto-migrate on startup in development
+if (app.Environment.IsDevelopment())
+{
+    using var scope = app.Services.CreateScope();
+    var db = scope.ServiceProvider.GetRequiredService<TaskTrackerDbContext>();
+    db.Database.Migrate();
+}
+
+app.UseSwagger();
+app.UseSwaggerUI();
+
+app.UseCors();
+app.UseDefaultFiles();
+app.UseStaticFiles();
+app.MapControllers();
+
+app.Run();