Manages benchmark documentation across multiple platforms. Use when updating benchmark results, adding performance data, or documenting jq comparison benchmarks. Triggers on terms like "benchmark", "performance", "jq comparison", "benchmark results", "update benchmarks".

Bit-level optimization patterns for succinct data structures. Use when optimizing rank/select, popcount, or balanced parentheses operations. Triggers on terms like "rank", "select", "popcount", "bit manipulation", "lookup table", "optimization".

Analyze git commits and generate better commit messages based on actual changes. Use when amending commit messages, reviewing commit quality, or writing commits. Triggers on terms like "commit message", "amend commit", "fix commits", "reword commits".

JSON semi-indexing implementation details and patterns. Use when working on JSON parsing, semi-index construction, or cursor navigation. Triggers on terms like "JSON index", "semi-index", "interest bits", "balanced parentheses", "JSON cursor".

Formats markdown tables with fixed-width columns for consistent alignment. Use when creating tables, reformatting existing tables, or ensuring table readability. Triggers on terms like "format table", "align table", "fix table", "table columns", "markdown table".

SIMD optimization patterns and learnings for x86_64 and ARM. Use when implementing SIMD code, optimizing vectorized operations, or debugging SIMD issues. Triggers on terms like "SIMD", "AVX", "SSE", "NEON", "vectorization", "intrinsics".

Best practices for writing and structuring Claude Code skills. Use when creating new skills, improving existing skills, or asking how to structure a SKILL.md file.

YAML semi-indexing implementation details and debugging patterns. Use when working on YAML parsing, semi-index construction, or cursor navigation. Triggers on terms like "YAML index", "YAML parser", "sequence item", "block sequence", "YAML cursor".