All Skills

Symbolicate .NET runtime frames in Apple platform .ips crash logs by extracting UUIDs and addresses, locating dSYM debug symbols, and running atos to produce function names with source file and line numbers.

Configure dependency injection in .NET MAUI apps — service registration in MauiProgram.cs, lifetime selection, constructor injection, Shell navigation auto-resolution, platform-specific registrations, and testability patterns.

Diagnose MSBuild build performance bottlenecks using binary log analysis, covering timeline analysis, performance summary interpretation, and seven common bottleneck categories.

Mechanically replace static dependency call sites with wrapper or built-in abstraction calls across a bounded scope, such as migrating DateTime.UtcNow to TimeProvider.GetUtcNow() or File.ReadAllText to IFileSystem.

Migrates .NET Framework code using Thread.Abort to cooperative cancellation with CancellationToken in modern .NET 6+.

Optimize Entity Framework Core queries by fixing N+1 problems, choosing correct tracking modes, using compiled queries, and avoiding common performance traps.

Diagnose MSBuild build failures by analyzing .binlog files using an MCP server or text-log replay.

Scan C# source files for hard-to-test static dependencies and produce a ranked report of static call sites by frequency.

Set up NuGet trusted publishing (OIDC) on a GitHub Actions repo, replacing long-lived API keys with short-lived tokens.

Scans C#/.NET code for ~50 performance anti-patterns across async, memory, strings, collections, LINQ, regex, serialization, and I/O with tiered severity classification.

Fix MSBuild targets so generated files are compiled, copied to output, and cleaned properly.

Implement file upload endpoints in ASP.NET Core minimal APIs (.NET 8+) with size limits, content validation, and streaming.

Prevents misguided optimization of MSBuild's ResolveProjectReferences target by explaining that its reported time is wall-clock wait time, not CPU work, and redirects to task self-time analysis.

Guides creation and validation of custom dotnet new templates from existing projects, including template.json authoring and packaging for NuGet distribution.

Finds, inspects, and compares .NET project templates by resolving natural-language descriptions to ranked template matches with pre-filled parameters.

Generate wrapper interfaces, default implementations, and DI registration code to make hard-to-test static dependencies in C# testable, using built-in abstractions like TimeProvider or custom wrappers.

Upgrade .NET 8 projects to .NET 9 by updating target frameworks, resolving breaking changes, and fixing build errors.

Optimizes hot-path scalar loops in .NET 8+ with cross-platform Vector128/Vector256/Vector512 SIMD intrinsics, or replaces manual math loops with single TensorPrimitives API calls.

Compares two or more dotnet new templates side by side to help users choose between them based on parameters, feature support, frameworks, and classifications.

Validates custom dotnet new templates for correctness before publishing, catching missing fields, parameter bugs, shortName conflicts, constraint issues, and common authoring mistakes.

Migrate .NET 9 projects to .NET 10 by updating target frameworks, resolving breaking changes, and fixing build errors.

Enable nullable reference types in a C# project and systematically resolve all warnings, file-by-file or project-wide.

Resolves native backtrace frames from .NET Android app crashes to function names, source files, and line numbers using ELF BuildIds and Microsoft's symbol server.

Audits .NET test mock usage by tracing each mock setup through the production code's execution path to find dead, unreachable, redundant, or replaceable mocks.

Organize multi-project .NET repos with Directory.Build.props, Directory.Build.targets, Directory.Packages.props, and Directory.Build.rsp for centralized MSBuild settings and NuGet Central Package Management.

Migrates .NET test projects from VSTest to Microsoft.Testing.Platform (MTP), updating project files, CLI arguments, and CI/CD pipelines for MSTest, NUnit, and xUnit.net.

Upgrade .NET 10 projects to .NET 11 by updating target frameworks, fixing breaking changes, and updating infrastructure.

Analyzes .NET test suites for duplicated boilerplate, copy-paste tests, and structural maintainability issues, producing a report with concrete before/after refactoring suggestions.

Creates .NET projects from templates with validated parameters, Central Package Management adaptation, and multi-project composition.

Fix build errors and breaking changes when upgrading MSTest from v3 to v4, or plan a complete migration.

Migrate .NET test projects from xUnit.net (v2 or v3) to MSTest v4, converting attributes, assertions, fixtures, and project configuration.

Fills in cross-parameter defaults when creating .NET projects with dotnet new, keeping related parameters consistent without overriding values the user set explicitly.

Migrate test projects from MSTest v1 (assembly references) or v2 (NuGet 1.x-2.x) to MSTest v3, handling breaking changes like assertion overloads, DataRow constructors, .testsettings replacement, and target framework updates.

Migrates .NET test projects from xUnit.net v2 to xUnit.net v3, updating package references, project files, and code to compile and pass tests.

Converts a pre-.NET 8 Blazor Server app into a .NET 8+ Blazor Web App by updating project files, migrating entry points, and adopting new render modes.

Configure OpenTelemetry distributed tracing, metrics, and logging in ASP.NET Core using the .NET OpenTelemetry SDK.