ag-avalonia-zafiro-development

# Avalonia Zafiro Development This skill defines the mandatory conventions and behavioral rules for developing cross-platform applications with Avalonia UI and the Zafiro toolkit. These rules prioritize maintainability, correctness, and a functional-reactive approach. ## Core Pillars 1. **Functional-Reactive MVVM**: Pure MVVM logic using DynamicData and ReactiveUI. 2. **Safety & Predictability**: Explicit error handling with `Result` types and avoidance of exceptions for flow control. 3. **Cross-Platform Excellence**: Strictly Avalonia-independent ViewModels and composition-over-inheritance. 4. **Zafiro First**: Leverage existing Zafiro abstractions and helpers to avoid redundancy. ## Guides - Core Technical Skills & Architecture: Fundamental skills and architectural principles. - Naming & Coding Standards: Rules for naming, fields, and error handling. - Avalonia, Zafiro & Reactive Rules: Specific guidelines for UI, Zafiro integration, and DynamicData pipelines. - Zafiro Shortcuts: Concise mappings for common Rx/Zafiro operations. - Common Patterns: Advanced patterns like `RefreshableCollection` and Validation. ## Procedure Before Writing Code 1. **Search First**: Search the codebase for similar implementations or existing Zafiro helpers. 2. **Reusable Extensions**: If a helper is missing, propose a new reusable extension method instead of inlining complex logic. 3. **Reactive Pipelines**: Ensure DynamicData operators are used instead of plain Rx where applicable. ## When to Use This skill is applicable to execute the workflow or actions described in the overview. ## Limitations - Use this skill only when the task clearly matches the scope described above. - Do not treat the output as a substitute for environment-specific validation, testing, or expert review. - Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.