Under the hood
Useful1 Signal2
Failed handoff pushes now report finer reasons and the HTTP status.
What's wrong with this entry?
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What
Outbound push failures are classified more finely: route_refused is gone, route_unavailable and rejected are added, the HTTP status is attached to both the error and its detail text, and a lane-unavailable result now carries its underlying cause. An optional pre-upload callback is awaited first, with its errors ignored. No user-visible surface.
Evidence
await t.beforeUpload?.(J).catch(() => {});
Strings lifted out of the shipped bundle, so the claim above can be checked against them.