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Bhargav
47d510aa16
Design at: designs/mobile-rum-sdk-evaluation/design-docs The page showed a single error event: header, tag strip, stack trace, replay button, event list. It could not say how bad the error was, who it reached, whether it was new, or where it concentrated — it never queried anything beyond that one row. It is now a two-column triage surface: the diagnosis path (occurrences chart, stack trace, breadcrumbs) on the left, corroborating evidence (replay, backend trace, breakdown, who hit it) on the right. - ErrorHeader: error type as the title with handling/source badges, the message in an alert banner, and a context line carrying event id, route and the service/version/env chips. Copy-permalink and copy-event-id actions. - ErrorImpactStrip: occurrences, users, sessions, first/last seen. A dash, not a zero, when a figure is unavailable. - ErrorOccurrencesChart: this signature over time, marking the bucket that holds the event the page was opened on. - ErrorFacetBreakdown: browser / OS / release / page as share-of-occurrences bars, calling out any value that owns 80%+ of the traffic — usually the fix. - ErrorContextCard: identity, device, geo and deployment for this occurrence. Supersedes ErrorTags, which is removed. Backed by useErrorDetail + errorDetailQueries: an impact aggregate gates a histogram and two facet group-bys. Three searches, staged inside the server's work-group cap and aborted when the view is left. Facets are split across two group-bys on purpose — one query over all four columns returns their cross product. Also fixes the breadcrumb trail: it read an hour of the whole stream with no session filter, so "what the user did before the crash" could be other people's clicks. It is now scoped to the session id.