ci(benchmark): provenance

[KSXGitHub]

https://claude.ai/code/session_011Gvuor8Hf1Q12P2xfVV71v

[Copilot]

Pull request overview

This PR extends the release deployment workflow to generate a GitHub artifact attestation (build provenance) for the benchmark report archive produced during the tagged-release “Benchmark” job.

Changes:

• Add explicit job-level permissions needed to upload release assets and create attestations (including OIDC token access) for the benchmark job.
• Create an actions/attest-build-provenance@v2 attestation for tmp.benchmark-reports.tar.gz before uploading it to the release.

[github-actions]

Performance Regression Reports

commit: 7301ac4

--quantity=apparent-size --max-depth=1 --min-ratio=0.01

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
pdu	68.9 ± 9.0	56.8	81.8	1.19 ± 0.16
pdu-0.20.0	57.8 ± 0.5	57.0	58.8	1.00

Logs

Benchmark 1: pdu
  Time (mean ± σ):      68.9 ms ±   9.0 ms    [User: 52.2 ms, System: 170.2 ms]
  Range (min … max):    56.8 ms …  81.8 ms    39 runs
 
Benchmark 2: pdu-0.20.0
  Time (mean ± σ):      57.8 ms ±   0.5 ms    [User: 51.8 ms, System: 172.6 ms]
  Range (min … max):    57.0 ms …  58.8 ms    51 runs
 
Summary
  pdu-0.20.0 ran
    1.19 ± 0.16 times faster than pdu

JSON

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