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@@ -18,7 +18,7 @@ Each `yield` in an async stream can create a new microtask boundary, so `Notifie
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Keeping the live Think row horizontally pinned to the end of the accumulated text is purely visual alignment and does not require synchronous layout reads on every React commit. An in-component scheduler coalesces consecutive requests into one update every three frames, reads `scrollWidth` and `clientWidth` from the latest DOM, and updates `scrollLeft` directly to the latest position; the fixed visual cadence keeps summary changes readable without allowing browser smooth-scroll animations to accumulate. This throttling applies only to Think's horizontal summary and does not delay Chat body scrolling, history-prepend anchoring, or user-triggered `scrollIntoView`.
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-`pnpm run test:web:stress` remains keyless, opt-in browser performance evidence. The deterministic `?fixture` session emits 100,000 `reasoning-delta` events at a cadence independent of painting, and a terminal marker proves that the events cross production session reduction and reach the live Think row; a 50-millisecond heartbeat and a pre-scheduled DOM event measure main-thread stalls and interaction latency, respectively, with a 250-millisecond budget for identifying clear regressions. `DSH_WEB_STRESS_HEADFUL=1` lets developers profile the same scenario in a visible browser with the Performance panel; the Vite web shell and tsdown client-plugin bundle always generate source maps, and the module host keeps `client.js.map` alongside every dynamic `client.js` in the build tree, allowing the browser to map samples back to TS/TSX source. The stress lane is evidence for manual performance diagnosis and fix acceptance, not a default CI gate or a substitute for deterministic scheduling unit tests.
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+`pnpm run test:web:stress` remains keyless, opt-in browser performance evidence. The deterministic `?fixture` session emits 100,000 `reasoning-delta` events at a cadence independent of painting, and a terminal marker proves that the events cross production session reduction and reach the live Think row; a 50-millisecond heartbeat and a pre-scheduled DOM event measure main-thread stalls and interaction latency, respectively, with a 250-millisecond budget for identifying clear regressions. `DSH_WEB_STRESS_HEADFUL=1` lets developers profile the same scenario in a visible browser with the Performance panel. The stress lane is evidence for manual performance diagnosis and fix acceptance, not a default CI gate or a substitute for deterministic scheduling unit tests.
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Focused tests pin `Notifier`'s per-frame coalescing, structural-event preemption, invalidated callbacks, and no-rAF fallback, and prove at the `Session` layer that a frame publishes the latest accumulated text only once and that finalization is not followed by a duplicate notification from a stale frame callback. Small fixture unit tests continue to pin input validation, external arrival pacing, concurrency rejection, exact event count, and terminal-marker delivery without bringing the 100,000-chunk workload into the default test suites.
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imccyu