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Reliable automation, in-depth debugging, and performance analysis in Chrome using Chrome DevTools and Puppeteer

Comprehensive feature development workflow with specialized agents for codebase exploration, architecture design, and quality review

Core skills library for Claude Code: TDD, debugging, collaboration patterns, and proven techniques

Harness-native ECC operator layer - 67 agents, 271 skills, 92 legacy command shims, reusable hooks, rules, selective install profiles, and production-ready workflows for Claude Code, Codex, OpenCode, Cursor, and related agent harnesses

Design fluency for frontend development. 1 skill with 23 commands (/impeccable polish, /impeccable audit, /impeccable critique, etc.) and curated anti-pattern detection.

Behavioral guidelines to reduce common LLM coding mistakes, derived from Andrej Karpathy's observations on LLM coding pitfalls