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* fix(eval): move skill-evolution to a self-hosted runner and fix the sandbox's Python 3 trust gap GitHub-hosted runners hard-cap job execution at 6 hours, which is too short once a benchmark session actually invokes Skill/MCP tools for real (the --bare fix in #2584 means sessions no longer no-op). Move the job onto a self-hosted runner (5-day cap instead) and document the activation step in the workflow's own checklist. Validating the self-hosted run surfaced a real bug: gitnexus-plan sessions inside the bwrap sandbox failed with "planning must create or modify exactly one plan artifact; observed 0". Root cause: evidence-provenance.mjs's atomic plan-writer only trusts a Python 3 binary owned by root or by the current process. Inside this --unshare-user sandbox only the calling uid is mapped (root isn't), so the real, root-owned /usr/bin/python3 surfaces as the kernel's overflow uid and gets correctly refused as untrusted. Fix: provision a small, self-owned wrapper script (same pattern already used for shell-prefix) that execs the real interpreter, so the sandbox has a Python 3 candidate the existing trust check can actually accept -- without touching that security-sensitive validation logic at all. Also add visibility so this class of failure isn't quiet next time: report.md now shows why each row failed (error_kinds), not just resolved 0/1, and the benchmark now exits non-zero when an incumbent arm -- the currently-shipped skill -- resolves zero across every task, since that reads as a broken harness rather than a normal candidate miss. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> * fix(eval): close the broken_incumbent_arms zero-valid-runs gap; document runner exposure tradeoff Addresses the two MEDIUM findings from the gitnexus-review-agent on this PR (https://github.com/abhigyanpatwari/GitNexus/pull/2600#issuecomment-5033363096). broken_incumbent_arms required valid_runs > 0 before flagging an incumbent, so an incumbent that fails every run with an excluded-but-non-systemic error_kind (e.g. evidence-unverified, which the outage-streak breaker explicitly resets on rather than accumulates) never accumulated a single valid run and sailed through silently -- the exact quiet no-promotion outcome this guard exists to catch, and arguably worse than the some-runs-resolved-zero case since here nothing completed at all. aggregate() never marks an excluded/unverifiable row resolved=True, so dropping the valid_runs requirement and checking resolved == 0 alone correctly covers both cases. Added a test for exactly this all-excluded scenario, which none of the existing three did. Updated the workflow's own activation checklist to reflect what's actually true now (the gitnexus-evolution environment's branch policy and the self-hosted runner are both live, codified in infra/gitnexus-evolution/ in a companion PR) and documented the exposure-window tradeoff the review flagged: the runner is stopped between runs but not destroyed/recreated per run, so it isn't fully ephemeral. Stopping already bounds the exposure window to the job's own runtime on one day out of seven; full per-job ephemeral provisioning is a deliberate non-goal for a job that runs at most weekly, revisit if that changes. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> * docs(eval): remove public infra/ pointers from the activation checklist PR #2603 (the Terraform codification this checklist pointed to) got closed -- publishing the exact IAM roles, security group rules, and self-hosted runner topology for a real, live AWS account isn't safe to do in a public repo, even with no literal secrets or resource IDs in the diff. The underlying AWS/GitHub setup is unaffected and still documented privately; this just removes the now-dangling references to a directory that won't exist in this repo. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> * ci(actionlint): register the gitnexus-evolution self-hosted runner label actionlint rejected `runs-on: [self-hosted, linux, x64, gitnexus-evolution]` in gitnexus-skill-evolution.yml because it can't discover custom runner labels. Register it in .github/actionlint.yaml so the Workflow Lint check passes. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> --------- Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
5 lines
210 B
YAML
5 lines
210 B
YAML
# Custom self-hosted runner labels actionlint can't discover on its own.
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# gitnexus-evolution: the skill-evolution EC2 runner (infra/gitnexus-evolution/).
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self-hosted-runner:
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labels:
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- gitnexus-evolution
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