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Two fixes from Ed's run. ## The assertion I called load-bearing was measuring nothing `backend_migration` is a DETACHED job: the trigger spawns the handler and returns 202 in milliseconds, carrying no outcome and no run_id. I had modelled it on `admin_jobs.hurl`, where the jobs are synchronous and the response IS the outcome. So `duration < 120000` on the trigger would have passed against the ORIGINAL unbounded behaviour — it timed the dispatch, not the migration. The one assert the file existed for proved nothing. The bound is now a polling budget: `/runs?limit=1` with `retry: 60`, `retry-interval: 2000`. 120s, then hurl fails on the last assert. Against a 15-minute hang the row sits in `Running` and the budget exhausts, which is the failure this file is for. `run_id` comes from `$[0].id` (runs are `ORDER BY started_at DESC`), since the 202 body has none. ## A count assert on a registry, again `storage_multi_entry.hurl` asserted `$.entries count == 3` and `s3_blackhole` made it 4. The failure reads "expected 3, got 4", naming neither the entry that appeared nor whether it belonged. Replaced with per-name `contains`, which is what a registry wants: membership asserted per item, so declaring a new entry does not break an unrelated file. Positional asserts stay — entry ORDER is a separate property and a real one, since the boot fallback picks `[0]` when no active pointer exists. Its comment also said "Two entries declared" while asserting three: the drift a count invites, visible in the same three lines. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>