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Replace the per-package scan of all vulnerabilities and the pairwise alias comparison with map-based indexing, memoize config path lookups, and avoid recomputing severity and fix versions per group.
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Removes quadratic work when building results and grouping aliases:
buildVulnerabilityResultsindexes vulnerabilities by package once instead of scanning all vulnerabilities per package.grouper.Groupuses union-find over identifiers instead of a pairwise comparison. This also fixes transitive alias chains being split into separate groups when the joining link is discovered late (regression test added).config.Manager.Getmemoizes the target path to config path resolution, avoiding a stat syscall per package.Benchmarks (
go test -bench, Apple M-series):Output is unchanged; all snapshot tests pass.