gui-cs.Terminal.Gui/.cursorrules

# Terminal.Gui - Cursor AI Rules

This project uses comprehensive AI agent instructions. See:
- `.github/copilot-instructions.md` - Complete onboarding guide (primary reference)
- `AGENTS.md` - General AI agent guidelines

## Quick Reference

### Project Type
- .NET 8.0 cross-platform console UI toolkit
- 496 source files in core library
- GitFlow branching (v2_develop = default)

### Essential Commands

```bash
# Always run from repo root in this order:
dotnet restore                                              # First! (~15-20s)
dotnet build --configuration Debug --no-restore            # ~50s, expect ~326 warnings
dotnet test Tests/UnitTestsParallelizable --no-build       # Preferred test suite
dotnet run --project Examples/UICatalog/UICatalog.csproj   # Demo app
```

### Code Style (Enforced)
- **DO**: Use explicit types (avoid `var`), target-typed `new()`, 4-space indent
- **DO**: Format only files you modify (ReSharper/Rider `Ctrl-E-C` or `Ctrl-K-D`)
- **DO**: Follow `.editorconfig` and `Terminal.sln.DotSettings`
- **DON'T**: Add new linters, modify unrelated code, decrease test coverage

### Testing Rules
- Add new tests to `Tests/UnitTestsParallelizable/` (preferred)
- Avoid `Application.Init` and static dependencies in tests
- Don't use `[AutoInitShutdown]` attribute (legacy)
- Maintain 70%+ code coverage on new code

### API Documentation (Required)
- All public APIs need XML docs (`<summary>`, `<remarks>`, `<example>`)
- Use `<see cref=""/>` for cross-references
- Complex topics → `docfx/docs/*.md`

### Common Issues
- ~326 build warnings are normal (nullable refs, etc.)
- Tests can take 5-10 minutes
- Run `dotnet restore` before any build
- Read `.github/copilot-instructions.md` for full troubleshooting

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**See `.github/copilot-instructions.md` for complete instructions**