Adds benchmarking tools

[arcanis]

Note

Adds end-to-end benchmarking and CI perf checks.

• CI: New Benchmarks workflow runs hyperfine on base vs head, caches builds, uses a local mock proxy, merges JSON results, and posts a PR comment with stats
• CLI: New debug bench commands (prepare/iteration/cleanup/run) with modes (install-full-cold, etc.) and fixtures (gatsby, next); --silent added to install and add
• Mock NPM proxy: New debug mock-proxy HTTP server (hyper) with response caching and URL rewriting for deterministic runs
• Bench harness: Adds divan benchmark benches/cli.rs and fixture package.json; ignores /bench-*.json
• Resolver tweak: Normalize npm tarball URLs (http→https, %2f handling) and use conventional vs URL locator accordingly
• Plumbing: Allow run_default/extract_bin_meta to accept argv; new error variants and deps (hyper, http-body-util, codspeed-divan-compat)

^{Written by Cursor Bugbot for commit ab717ac. This will update automatically on new commits. Configure here.}

[codspeed-hq]

CodSpeed Performance Report

Congrats! CodSpeed is installed 🎉

🆕 1 new benchmark was detected.

You will start to see performance impacts in the reports once the benchmarks are run from your default branch.

Detected benchmark

• search_vector: 10.9 s

[github-actions]

⏱️ Benchmark Results

Metric	Base	Head	Difference
Mean	5.515s	5.510s	-0.08% ✅
Median	5.513s	5.503s	-0.19% ✅
Min	5.447s	5.405s
Max	5.627s	5.645s
Std Dev	0.041s	0.055s

📊 Raw benchmark data

Base times: 5.493s, 5.516s, 5.546s, 5.540s, 5.513s, 5.627s, 5.508s, 5.531s, 5.481s, 5.447s, 5.463s, 5.491s, 5.581s, 5.552s, 5.500s, 5.478s, 5.526s, 5.497s, 5.452s, 5.538s, 5.459s, 5.477s, 5.556s, 5.513s, 5.572s, 5.503s, 5.491s, 5.563s, 5.519s, 5.515s

Head times: 5.615s, 5.536s, 5.590s, 5.557s, 5.531s, 5.465s, 5.483s, 5.510s, 5.503s, 5.568s, 5.405s, 5.487s, 5.494s, 5.511s, 5.507s, 5.538s, 5.442s, 5.443s, 5.510s, 5.466s, 5.462s, 5.477s, 5.609s, 5.495s, 5.443s, 5.503s, 5.501s, 5.538s, 5.645s, 5.475s

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Benchmark: gatsby install-full-cold

[arcanis]

@BugBot review

[cursor]

✅ Bugbot reviewed your changes and found no bugs!