diagnostics

Live stream of diagnostics events emitted by this module's pipeline.

Host apps (e.g. the showcase DevZone surface) can collect this flow to render a real-time log of request lifecycle and failure diagnostics. The stream is hot (no replay) with a 64-event buffer that drops the oldest event on overflow; late subscribers see only events emitted after subscription.

URL-bearing fields are redacted before emission; subscribers never see raw advertising IDs.