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]>

.gitignore

@@ -0,0 +1,17 @@
+## .NET build output
+bin/
+obj/
+*.user
+
+## Local runtime data (db, uploads, data-protection keys)
+data/
+**/Data/*.db
+**/Data/*.db-shm
+**/Data/*.db-wal
+src/WishNinja/smoke-data/
+src/WishNinja/Data/
+
+## IDE
+.vs/
+.idea/
+*.suo