Initial build: WishNinja self-hosted gift wishlist manager

ASP.NET Core Blazor (.NET 10) + EF Core/SQLite + Identity. Features:
- Wishlists & items with local image storage (upload, clipboard paste,
  or URL fetched and stored locally)
- Owner-hidden claims (enforced at the query layer) to preserve surprises
- Admin-invite-only onboarding with email-based password resets
- All state under /data; ships as a single Docker image

Includes Dockerfile, docker-compose, Gitea Actions CI (test + push image),
Unraid template, and xUnit tests (claim privacy, invite lifecycle, image validation).

Co-Authored-By: Claude Opus 4.8 <[email protected]>

tests/WishNinja.Tests/TestDb.cs

@@ -0,0 +1,30 @@
+using Microsoft.Data.Sqlite;
+using Microsoft.EntityFrameworkCore;
+using WishNinja.Data;
+
+namespace WishNinja.Tests;
+
+/// <summary>
+/// An <see cref="IDbContextFactory{TContext}"/> backed by a single shared in-memory SQLite
+/// connection, so data written by one context is visible to the next. Dispose to tear down.
+/// </summary>
+public sealed class TestDb : IDbContextFactory<ApplicationDbContext>, IDisposable
+{
+    private readonly SqliteConnection _connection;
+    private readonly DbContextOptions<ApplicationDbContext> _options;
+
+    public TestDb()
+    {
+        _connection = new SqliteConnection("DataSource=:memory:");
+        _connection.Open();
+        _options = new DbContextOptionsBuilder<ApplicationDbContext>()
+            .UseSqlite(_connection)
+            .Options;
+        using var ctx = CreateDbContext();
+        ctx.Database.EnsureCreated();
+    }
+
+    public ApplicationDbContext CreateDbContext() => new(_options);
+
+    public void Dispose() => _connection.Dispose();
+}