What problem does it solve? Test analysis skills need framework-specific lookup tables (assertion APIs, skip annotations, sleep patterns, tag syntax) that differ across languages, and this Skill centralizes those per-language reference files so analysis stays accurate across polyglot codebases. ## Core Features & Use Cases - Per-Language Reference Files: Ships extension files for .NET, Python, TypeScript/JavaScript, Java, Go, Ruby, Rust, Swift, Kotlin, PowerShell, and C++ covering their major test frameworks. - Standardized Capability Categories: Each file documents test discovery, assertion detection, sleep patterns, skip/ignore markers, setup/teardown, mystery guest indicators, integration markers, and tag support. - Tag Support Gating: Declares auto-edit, report-only, or convention-based tagging capability per language so the test-tagging skill behaves safely. - Use Case: When auditing a mixed Jest and Mocha TypeScript repository, the test-quality-auditor agent reads typescript.md to correctly detect unawaited promises, .only commits, and framework-specific assertion forms. ## Quick Start Invoke this skill to list the available extension files, then read the extension file matching your codebase's language and test framework before running test analysis.