I wanted a corpus anyone could regenerate without trusting a download or my choice of files. Run python benchmarks/generate_corpus.py, then python benchmarks/run_benchmarks.py. The generator uses fixed seed 1729 and creates Python and Arduino source, JSON, Markdown, duplicates, tiny and empty files, timestamped telemetry, low-cardinality states, random noise, and deterministic gzip data.

The generated corpus/ and result files stay local and do not need to be committed. Oh! The important reading rule is simple: a result describes only that generated corpus and the environment printed beside it.