loopx-benchmark

# LoopX Benchmark Workflow Use this skill for a LoopX-managed benchmark experiment. The builtin `benchmark-toolkit` capability owns provider-neutral experiment state and integrity boundaries. This packaged skill is its task-triggered Agent playbook. The capability is catalog-ready without a per-Goal enable switch. Installing this skill does not grant runner, shell, network, credential, private-evidence, or Goal mutation authority. Respect the selected todo's required capabilities, any external provider binding, host permissions, and user gates. ## Capability surface - `loopx capability show benchmark-toolkit --format json` — catalog entry with usage hints, role boundaries, and the post-run case-insight template. - `loopx benchmark --help` — subcommands (experiment-board-show, experiment-board-upsert, source-revision-fence, integrity-qualification, classify-artifacts). ## Share a study through the public-safe contract When another benchmark developer needs portable study data, use the capability's typed study flow rather than sharing a runner-specific ledger or raw evidence: 1. Validate `benchmark_study_manifest_v0` with `benchmark study-validate`. 2. Wrap one allowlisted manifest, experiment-board row, redacted insight, or runtime observation with `benchmark upload-envelope`. 3. Run `benchmark upload-local` without `--execute` first, then explicitly execute against a caller-selected local JSONL store. 4. Verify the record/digest/revision binding with `bench...