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Opt in to enableStandaloneAppStartTracing (SDK 9.28) so app start is its own app.start root, and extend it past the first frame around feature-flag hydration and the initial catalog fetch. Co-authored-by: Cursor <cursoragent@cursor.com>
Parent the main-thread plant-cache I/O to the stream-mode extension span so sentry_file's file.write/file.read attach to app.start instead of ui.load. Co-authored-by: Cursor <cursoragent@cursor.com>
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Summary
sentry_flutter(and sibling packages) to 9.28.0enableStandaloneAppStartTracingwhile keeping span streaming (SentryTraceLifecycle.stream).extendAppStartbeforerunApp, child spans for feature-flag hydration and the first catalog fetch (viagetExtendedAppStartSpanV2), thenfinishExtendedAppStart.Test plan
App Startroot (app.start) in Explore/Traces, independent of the firstui.load.Extended App Startplus child spansHydrate feature flagsandFetch product catalog.Made with Cursor