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.Infrastructure/Repositories/AppMappingRepository.cs

@@ -0,0 +1,55 @@
+using Microsoft.EntityFrameworkCore;
+using TaskTracker.Core.Entities;
+using TaskTracker.Core.Interfaces;
+using TaskTracker.Infrastructure.Data;
+
+namespace TaskTracker.Infrastructure.Repositories;
+
+public class AppMappingRepository(TaskTrackerDbContext db) : IAppMappingRepository
+{
+    public async Task<List<AppMapping>> GetAllAsync()
+    {
+        return await db.AppMappings.OrderBy(m => m.Category).ToListAsync();
+    }
+
+    public async Task<AppMapping?> GetByIdAsync(int id)
+    {
+        return await db.AppMappings.FindAsync(id);
+    }
+
+    public async Task<AppMapping> CreateAsync(AppMapping mapping)
+    {
+        db.AppMappings.Add(mapping);
+        await db.SaveChangesAsync();
+        return mapping;
+    }
+
+    public async Task UpdateAsync(AppMapping mapping)
+    {
+        db.AppMappings.Update(mapping);
+        await db.SaveChangesAsync();
+    }
+
+    public async Task DeleteAsync(int id)
+    {
+        var mapping = await db.AppMappings.FindAsync(id);
+        if (mapping is not null)
+        {
+            db.AppMappings.Remove(mapping);
+            await db.SaveChangesAsync();
+        }
+    }
+
+    public async Task<AppMapping?> FindMatchAsync(string appName, string windowTitle, string? url)
+    {
+        var mappings = await db.AppMappings.ToListAsync();
+
+        return mappings.FirstOrDefault(m => m.MatchType switch
+        {
+            "ProcessName" => appName.Contains(m.Pattern, StringComparison.OrdinalIgnoreCase),
+            "TitleContains" => windowTitle.Contains(m.Pattern, StringComparison.OrdinalIgnoreCase),
+            "UrlContains" => url?.Contains(m.Pattern, StringComparison.OrdinalIgnoreCase) == true,
+            _ => false
+        });
+    }
+}