Agent Skills: dyad:run-benchmark

Run the app-builder benchmark (benchmarks/app-builder) for one or more models — build the three apps through headless Dyad against neon-sim and the recording proxy, score them (Playwright CUJs + security probes + LLM judge), verify the wire ledger, and regenerate RESULTS.md and the scores page. Use this whenever the user asks to benchmark, bench, or eval a model, run it "at low/high effort", compare cost or scores of models on the apps, rerun a lost cell, or asks what a model scored. Also use it for follow-up questions about a run (why a checkpoint failed, how much it cost) — the procedures for diagnosing cells live here.