feat(bench): geometric scale curves for yaml/soup/protobuf/multipart#91
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Summary
Adds
TestScaleCurvebenchmark classes to 4 parser modules, using geometric input sizes to reveal complexity behavior across the full range.Modules covered:
yaml— document key count: 10 → 50 → 200 → 500 → 1000 → 5000 itemssoup— HTML node count: 50 → 200 → 500 → 1000 → 2500 → 5000 → 25000 nodesprotobuf— message count / field size sweepmultipart— part count and payload size sweepMotivation
Three fixed S/M/L sizes can't reveal where complexity inflects. For example,
soupCSS select shows near-parity at 50 nodes but zerodep pulls ahead by 10x+ at 5000 nodes — invisible with only 3 data points.Test results
120 tests pass across all 4 modules.
Closes #86