All Skills

Create or review Blazor components (.razor files) with correct architecture, covering parameters, EventCallback, RenderFragment, lifecycle, async patterns, disposal, and CSS isolation.

Diagnoses and fixes .NET MAUI development environment issues by validating .NET SDK, workloads, Java JDK, Android SDK, Xcode, and Windows SDK with version requirements discovered dynamically from NuGet.

Handle .NET MAUI application state transitions, Window lifecycle events, and state preservation across backgrounding and resume cycles.

Provides canonical patterns for MSBuild item groups: Include/Remove/Update semantics, item metadata, batching with %(Metadata), transforms, per-item filtering, and cross-product batching pitfalls.

Generates and writes unit tests for any programming language using a multi-agent pipeline that researches, plans, and implements tests with build and verification steps.

Detects the test platform (VSTest vs Microsoft.Testing.Platform) and test framework (MSTest, xUnit, NUnit, TUnit) from .NET project files.

Audits test files for anti-patterns and quality issues, producing a severity-ranked report across multiple languages and frameworks.

Guides creation and modification of ASP.NET Core Web API endpoints with correct HTTP semantics, OpenAPI metadata, and error handling.

Guidance for implementing CollectionView in .NET MAUI apps — data display, layouts (list & grid), selection, grouping, scrolling, empty views, templates, incremental loading, swipe actions, and pull-to-refresh.

Diagnose and improve MSBuild project evaluation performance by analyzing phases, glob patterns, import chains, and property functions.

Guides MSBuild extensibility through CustomBefore/CustomAfter hooks, wildcard imports, import gating, and NuGet package build extension layout.

Canonical patterns for writing custom MSBuild targets, covering the three-level target chain, chain extension, DependsOnTargets vs BeforeTargets vs AfterTargets, Returns vs Outputs, and common pitfalls.

Provides guidance on new System.Text.Json APIs introduced in .NET 11, including typed JsonTypeInfo access and PascalCase naming policy.

Generates personalized greetings based on the time of day and the person's name.

Build forms, validate data, and react to user input in Blazor applications.

Guides developers through capturing diagnostic artifacts to diagnose production .NET performance issues, including tool selection and data collection across Windows, Linux, containers, and Kubernetes.

Add the /bl switch to MSBuild-based commands to generate binary logs for build diagnostics and performance analysis.

Optimize MSBuild build parallelism by configuring /maxcpucount, graph build mode, project references, and analyzing binlogs to reduce multi-project solution build times.

Diagnose and fix slow MSBuild incremental builds by identifying why targets re-execute unnecessarily, covering common causes like missing Inputs/Outputs, volatile properties, and FileWrites registration.

Provides canonical MSBuild property definition patterns including conditional defaults, composition, path normalization, target framework detection, and evaluation order for diagnosing and fixing property issues in .props and .csproj files.

Audits test code in any language using the academic testsmells.org 19-smell catalog, producing a severity-ranked report with specific locations and actionable fixes.

Write, create, modernize, or fix comprehensive MSTest unit tests with MSTest 3.x/4.x APIs, covering assertions, data-driven tests, lifecycle, and async patterns.

Resolve IL trim and AOT analyzer warnings in .NET projects to make them compatible with Native AOT and trimming.

Call APIs, load data into components, and handle the async lifecycle in Blazor.

Implement Shell-based navigation in .NET MAUI apps, including AppShell setup, URI-based navigation with GoToAsync, route registration, query parameters, flyout and tab configuration, and navigation guards.

Parse source files to find which ones have no test file referencing their declared types, producing a prioritized worklist of untested files.

Fix interactive Blazor components that break during prerender: duplicate data loads, null references, UI flicker, and state loss. Persist state across the prerender-to-interactive handoff, disable prerendering, exclude pages from interactive routing, and detect prerender vs interactive at runtime.

Measure and optimize .NET build performance by establishing baselines, enabling MSBuild Server, using artifacts output, and trimming dependency graphs.

Detects MSBuild projects with conflicting OutputPath or IntermediateOutputPath to diagnose build failures.

Share state between Blazor components across render mode boundaries using cascading values, scoped services with change events, or CascadingValueSource via DI.

Scaffolds new Blazor web applications with the correct render mode, project structure, and authentication setup.

Detects and fixes common MSBuild anti-patterns in .csproj, .vbproj, .fsproj, .props, .targets, and .proj files, covering Exec misuse, unquoted conditions, hardcoded paths, and more.

Provides file paths to language-specific extension files for the code-testing pipeline, enabling discovery of guidance for .NET, Python, TypeScript, and other languages.

Analyzes .NET Framework CLR activation logs to diagnose runtime loading failures, version selection issues, and Feature-on-Demand dialog behavior.

Migrate legacy MSBuild project files to SDK-style format, reducing .csproj complexity and enabling modern .NET features.

Provides file paths to language-specific reference files for polyglot test analysis skills, enabling framework-aware detection of test markers, assertions, and patterns across .NET, Python, TypeScript, Java, Go, Ruby, Rust, Swift, Kotlin, PowerShell, and C++.