Quality Assurance skill for planning, executing, and improving testing across functional and non-functional dimensions. Use when creating test strategies, writing test plans/cases, defining...

It's not DNS / There's no way it's DNS / It was DNS. Diagnose and troubleshoot DNS issues including delegation verification, record conflicts, authoritative vs local DNS comparison, and SPF...

Use when writing, debugging, or reviewing Playwright tests for web apps; before writing test code; when tests are flaky, slow, or brittle; when seeing timeout errors, element not found, or race...

Resolve NixOS issues using research and sequential thinking

Fix GitHub Actions CI failures using GitHub CLI (gh): inspect runs/logs, identify root cause, patch workflows/code, rerun jobs, and summarize verification. Use when GitHub Actions CI is failing or...

Parallel test execution orchestration with intelligent scheduling, retry logic, and comprehensive result aggregation.

Write AST-based code search and rewrite rules using ast-grep YAML. Create linting rules, code modernizations, and API migrations with auto-fix. Use when the user mentions ast-grep, tree-sitter...

Find and edit symbols in code using ast-grep (tree-sitter based). Use when finding function definitions, class definitions, symbol usages, renaming symbols, or replacing code in JavaScript,...

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Expert deployment engineer specializing in modern CI/CD pipelines,

Expert deployment engineer specializing in modern CI/CD pipelines,

Expert deployment engineer specializing in modern CI/CD pipelines,

Write comprehensive end-to-end tests using Playwright with page object