perf: LatencyHistogram → @stackbilt/wasm-core adapter (closes #96)#101
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…loses #96) Thin adapter over @stackbilt/wasm-core@0.1.0. Rust impl uses sorted Vec with binary search (O(log N) insert, O(1) percentile) and circular eviction (O(1)) instead of Array.shift + sort-on-read. Exact nearest-rank semantics preserved; all 487 tests pass. Vitest config updated to enable --experimental-wasm-modules in the fork pool so WASM loads in Node. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
LatencyHistogramwith a thin adapter over@stackbilt/wasm-core@0.1.0(Phase 0 of the wasm-core roadmap)Vecwith binary search insertion — O(log N) insert, O(1) percentile read; O(1) circular eviction replacingArray.shift()allSummaries()uses a tracked providerSeton the adapter side (works around aall_summaries()gap in the WASM binding where the map returns{})Test plan
npm test) —observability.test.tsLatencyHistogram suite covers all semantics including eviction, allSummaries, reset (specific + all), and percentile mathnpm run typecheck)pool: 'forks'+execArgv: ['--experimental-wasm-modules']to load WASM in the Node.js test environmentCloses #96
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