Refactor authentication system to use MongoDB

- Removed Entity Framework Core identity schema and related migrations.
- Introduced MongoDB-based authentication service with user seeding functionality.
- Updated Program.cs to configure authentication and authorization using cookies.
- Created new Login.razor component for user login interface.
- Added RedirectToLogin component for handling unauthorized access.
- Updated Dockerfile and docker-compose files for development and production environments.
- Removed SQLite connection strings and related configurations.
- Added MongoDB connection settings in appsettings.json and Docker configurations.
- Implemented IMongoAuthService interface and MongoAuthService class for user management.
- Created MongoAuthUser model for MongoDB user representation.

README.Docker.md

@@ -0,0 +1,35 @@
+Running and debugging with Docker (includes MongoDB)
+
+Quick run (Docker Engine required):
+
+1. Build and start services:
+
+   docker compose up --build
+
+2. App will be available on host port 8002 -> container 8080 (http://localhost:8002).
+
+Development in VS Code (F5):
+
+- The repository uses `docker-compose.yml` plus `docker-compose.override.yml` as the single development stack.
+- The override file switches the app container to the SDK-based `dev` image, mounts the workspace into `/workspace`, installs `vsdbg`, and runs `dotnet watch`.
+- Press F5 in VS Code with the `Docker: Attach .NET in Compose - F5` configuration selected.
+- VS Code starts Docker Compose, waits for `http://localhost:8002`, opens the browser, and attaches the debugger to the `worktracker-dev` container.
+
+Manual development start:
+
+- `docker compose up --build`
+
+Manual shutdown:
+
+- `docker compose down`
+
+MongoDB:
+
+- The compose stack includes a `mongo` service and a named volume `mongo_data` for persistence.
+- The app uses `MongoDb__ConnectionString: mongodb://mongo:27017` inside the compose network.
+
+Notes:
+
+- The base compose file remains production-oriented; the override file is the development/debug layer that VS Code uses automatically.
+- The first container build takes longer because the dev image installs the .NET debugger.
+- The Dockerfile pins the .NET 10 images to the `*-noble` tags because the generic `10.0` SDK tag does not provide a usable SDK in this environment.