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ccd9c1f48e
* fix: reduce CPU usage during large XML streaming Skip Prism syntax highlighting while tool call is streaming — use plain <pre> during streaming and only run Prism once at completion. Also throttle scrollIntoView to once per 150ms to avoid layout thrashing. Profiled with Playwright + CDP: for 200-cell diagrams the longest browser task dropped from 6.7s to ~450ms and total long-task time fell from ~10.9s to ~1.1s. * fix: add trailing edge to scroll throttle Ensures the chat scrolls to the bottom after streaming ends, even if the last messages update arrives during the 150ms throttle window.