perf(resolver): micro-optimize single-thread hot path#233

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perf/micro-opt-resolver

Commits on May 21, 2026

chore: ignore optimization-artifacts/ used by micro-opt profiling
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perf(resolver): cut allocs and std::path overhead on cold-cache single-thread
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perf(path): preallocate normalize_with output to avoid Vec regrowth
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perf(cache): pre-size PathBuf when joining hot module/package paths
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perf(cache): byte-level path parent in Cache::value on unix
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perf(cache): skip normalize_with allocation when realpath chain has no symlinks
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perf(fs): use sync std::fs in FileSystemOs for metadata/read calls
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