TonyTroeff

Implements features, bug fixes, refactoring, and code changes by breaking work into focused sub-problems. Use whenever writing, modifying, or creating code. Use when the user asks to implement, build, create, add, fix, update, refactor, or change anything in the codebase.

Best practices for collection handling in .NET. Load when creating/initializing collections, choosing collection types for properties/fields/return types, designing public APIs with collections, or modernizing collection syntax.

Guides .NET snapshot test work that uses Samples and Snapshots folders. Use when creating, updating, or reviewing snapshot tests, golden-file tests, approval tests, or expected-output files in a .NET test project.

WPF best practices: MVVM, UI threading, XAML, project layout, mandatory solution builds, and passing tests after every code change. Use when editing or creating WPF projects, .csproj/.sln files, XAML, code-behind, ViewModels, or resource dictionaries in this repository.

Plan and implement web scraping workflows with robust target clarification and selector strategy. Use when the user asks to scrape websites, extract page data, crawl pages, parse HTML, or build scraping scripts.

MANDATORY rules and helpers for writing or running back-end (FastAPI/SQLAlchemy) tests in expAInses. Use this whenever you add, edit, or run a Python test, create a test file under backend/tests, set up pytest, or verify back-end behavior. Enforces: random test data only, a REAL on-disk SQLite database, and full data cleanup after every test.