ci-local-exportlisted

# ci-local-export The lefthook time-wrap (`packages/ci-steward/bin/time-wrap.sh`) records a START and an END line for every hook command in `$(git rev-parse --git-common-dir)/ci-steward/local-timings.jsonl`. That file lives only on this machine, so a GitHub Actions job cannot read it. This job pushes one aggregate per finished day to `local/<clone>/YYYY-MM-DD.json` on the `ci-steward-data` branch, where the daily collector turns it into the `local-commit` and `local-push` SLOs. It runs at 04:30 UTC, half an hour before the collector. ## Run ```bash pnpm ci:local-export ``` Then report its output in one or two lines: how many days it exported, whether it pushed, and whether it rotated the file. It never needs anything else. ## What it does 1. Reads the timings file and pairs each START with its END. An END with a signal status (128 + HUP, INT or TERM) is a killed run, and so is a START with no END older than `local.killed_after_seconds` in `ci/config.yaml` (the pre-push watchdog's ceiling plus margin); a younger unmatched START might still be running and is left for tomorrow. 2. Writes each finished day under `local/<clone>/`. The clone name is a short digest of this machine and this clone, never the hostname (the branch is public); set `CI_STEWARD_CLONE` or pass `--clone <name>` to choose one. 3. Pushes with fetch, rebase and retry. It never creates the branch: before the collector's first run it says so and pushes nothing. 4. Writes a heartbeat, `local/<clone>/exported