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* fix(sandbox): stop E2B reconciliation from reviving warm-pool sandboxes Periodic reconciliation probed every discovered remote sandbox with Sandbox.connect() before the locality check, and the check itself only consulted _sandboxes, not _warm_pool. A sandbox parked by release() was therefore adopted back to active on the first pass, and because the SDK normalizes connect(timeout=None) to its 300s default and the control plane extends a running sandbox's expiry when now+timeout is later, each 60s pass kept pushing the expiry forward — idle warm sandboxes never hit their configured idle_timeout. Treat _sandboxes and _warm_pool ids as locally tracked up front: skip probing them (no timeout-mutating connect), keep them canonical, and route only genuinely remote candidates through the duplicate-reap path. Extend the post-probe adoption recheck to _warm_pool so a release that lands mid-probe cannot be promoted back to active either. Fixes #5550 * fix(sandbox): keep active E2B VMs alive and sweep expired warm entries Address review on #5562: - Reconciliation now refreshes the remote TTL of locally active sandboxes through their cached client (never connect()), restoring the keepalive for turns that outlive idle_timeout without reviving warm-pool VMs. - Warm-pool entries parked longer than idle_timeout are dropped during reconciliation — their VMs are expected to be reaped by the control plane — releasing the ownership lease and the capacity slot they would otherwise pin until reclaim, eviction, or shutdown. - Remove the now-dead thread-local canonical sort; locally tracked ids are skipped unconditionally, so the ordering hint had no effect. * fix(sandbox): preserve active E2B keepalive and shared capacity * fix(sandbox): serialize E2B reconciliation lifecycle transitions * fix(sandbox): fence E2B ownership and timeout lifecycle writes * fix(sandbox): isolate ownership heartbeats from E2B timeout IO --------- Co-authored-by: Totoro-qaq <279883115+Totoro-qaq@users.noreply.github.com> Co-authored-by: Willem Jiang <willem.jiang@gmail.com>