Adding a language

A language is a closed-set id (python, rust, javascript, csharp, c). The folder name may differ (c-sharp/ → id csharp).

Required

<runner_dir>/
  README.md
  scripts/run-benchmarks.sh
  src/   # or language equivalent

scripts/run-benchmarks.sh must:

1. source "$PROJECT_ROOT/scripts/lib/config.sh"
2. Accept smoke|all-single|full|research|custom
3. Use bench_mode_reps — never hard-code 2/10/100/500
4. Export BENCHMARK_TS, BENCHMARK_SEED, bench_export_run_config
5. Write logs/<id>/YYYY-MM-DD-HHMMSS.csv using the shared CSV ABI
6. Optionally write .errors.csv and let analysis write .configs.json

Also update

• config/benchmark_config.yaml → languages.<id> and paths.language_log_dirs
• scripts/check-host-requirements.sh / install-host-requirements.sh
• .github/workflows/benchmark-ci.yml
• mkdocs.yml Languages nest and docs/<lang>/index.md
• dashboard LANGUAGE_CATALOG / sync-data.py
• .grok/skills/prepare-pr/scripts/detect-changed-langs.sh