fix(plausible): Prevent duplicate HTTP calls for read progress

[sentry]

DESCRIBE YOUR PR

This PR fixes issue DOCS-A7B by preventing duplicate HTTP calls to Plausible Analytics for 'Read Progress' events.

Root Cause:
The useEffect hook within the ReaderDepthTracker component (src/components/track-reader-depth.tsx) was missing a dependency array. This caused the effect to run on every component re-render, leading to the accumulation of multiple scroll event listeners. Each listener would then independently trigger a 'Read Progress' event to Plausible, resulting in duplicate HTTP POST requests.

Changes Made:
An empty dependency array ([]) has been added to the useEffect hook in src/components/track-reader-depth.tsx. This ensures the effect runs only once when the component mounts, correctly registering a single scroll event listener and preventing the accumulation of duplicate listeners.

Impact:
This fix addresses the issue of inflated analytics data for 'Read Progress' metrics and reduces unnecessary network traffic to Plausible, improving data accuracy and network efficiency without affecting the user experience.

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LEGAL BOILERPLATE

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Project	Deployment	Actions	Updated (UTC)
develop-docs	Error		Feb 11, 2026 11:51pm
sentry-docs	Error		Feb 11, 2026 11:51pm