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Added
PerfSpoolReplayReader validates spool files while retaining definitions instead of every sample, then decodes samples and raw stacks sequentially.
Replay readers expose recorded frame-module contexts, and PerfSymbolizer::for_replay plus its builder and stack methods preserve mapping-generation-aware symbolization.
Performance
Sequential replay uses a bounded 8 MiB sample-range index and switches to allocation-free record scanning for any unindexed suffix.