{
 "id": "client-reliability-8",
 "area": "client-reliability",
 "status": "in-progress",
 "title": "Measure and scope active URL-media last-owner cancellation with shared/rejoin controls",
 "blockedOn": null,
 "addedOn": "2026-10-20",
 "filedAt": "6609269ea11aaff753e6d9f3d8b91eb04e219a20",
 "evidence": "At5b77fd20 actual observer/controller controlled media last-owner retains1resource/3listeners/1timer/1slot/unsettled1;strict disposed/fifo checks naturally fail after cleanup. Queue3active/2waiting unchanged until controlled completion;shared/cross/legacy/rejoin/timeout/error/replacement7controls exit0,existing lifecycle18pass. Proposal controller retain/active-media settle cleanup only,explicit queued-only cache/rejoin test contract correction pending dispatch independent confirmation/routing. Evidence test_logs/TEST_LOG_2026-10-20_20-55-00_client-reliability-8-investigation.md. No product/tests/full/build/browser changes."
}