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.Core/Enums/TaskStatus.cs

@@ -0,0 +1,10 @@
+namespace TaskTracker.Core.Enums;
+
+public enum WorkTaskStatus
+{
+    Pending,
+    Active,
+    Paused,
+    Completed,
+    Abandoned
+}