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fix(benchmarks): stop history benches sleeping in jsdom's traversal timers The history benches were skip-warned by CodSpeed for excessive syscall time (5-26ms, highly variable across runs). Root cause: jsdom delivers history traversals through two nested window.setTimeout(0) tasks, and Node clamps zero timers to 1ms of wall time — so while awaiting onRendered after back/forward/go, the event loop blocked in epoll_wait until each timer expired. That blocked wall-time is recorded as syscall time, and its duration depends on host timer behavior, hence the variability. The harness now reroutes zero-delay window.setTimeout calls onto setImmediate for the duration of a benchmark (non-zero delays pass through; clearTimeout handles both). Zero-delay timeouts carry no ordering semantics a check-phase immediate doesn't satisfy, and the suite's conventions already forbid real-delay timers in measured code. Instrumented A/A verification (2 runs per framework): history syscall time react 23-26ms -> 2.5ms, solid 14-23ms -> 1.1ms, vue 11-12ms -> 1.2ms, with bit-identical syscall counts across runs and measured values stable to 0.06%. The benches also stopped measuring sleep: locally an iteration dropped from ~42-49ms to ~5-11ms of actual CPU work. All 39 benches pass. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

nx affected --targets=test:eslint,test:unit,test:e2e,test:types,test:build,build --parallel=3

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