Fix WebUI rolling-window and buffer-wrap display bugs

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Replace fragile zoomGuard boolean with userInteracting flag so that
programmatic scale updates (rolling window, resize, fit) never lock
p.xRange.  Only genuine mouse drag or scroll-wheel events on the uPlot
canvas set userInteracting=true and allow onZoom to freeze the view.

Also move stale-xRange detection out of the needsRedraw gate so that a
plot whose circular buffer has scrolled past a frozen zoom range
automatically returns to rolling-window mode every frame, fixing the
second bug where data disappeared as the buffer wrapped.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

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Martino FerrariandClaude Sonnet 4.6 committed 2026-05-17 23:48:31 +02:00

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commit 82005ec5d3

3 files changed

+1292 -765

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