Add engagement events - #3
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GA4 enhanced measurement gives a pageview and one scroll event at 90%, which for an article built out of interactive figures answers neither useful question: was a figure touched, and where do people stop. Three events — read_depth at 25/50/75/100, widget_interact once per figure, and crosslink_click — inlined through SiteHead so both this page and the tool page get them, the same way they already share the analytics and social tags. The source is a copy of tools/engagement/engagement.js in the orbitope.github.io repo, imported with ?raw so it stays one file to edit rather than a snippet pasted into an .astro template. The two sites build in completely different ways, so a copy is the honest option; there is no shared package here. Verified against the built docs/ over a local server: nothing fires on load and all four depth marks fire on a full read. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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Adds the three engagement events, matching the eight hand-written articles.
Why
GA4 enhanced measurement gives a pageview and one scroll event at 90%. For an article made of fifteen interactive 3D figures, that answers neither useful question: was a figure touched, and where do people stop.
Events
read_depthpercentwidget_interactidcrosslink_clicklink_urlWired through
SiteHead, so the tool page gets them too — the same reason the analytics and social tags already live there rather than in the layout.On the copied file
engagement.jsis a copy oftools/engagement/engagement.jsin the orbitope.github.io repo, imported with?rawso it stays one file to edit rather than a snippet pasted into an.astrotemplate. The two sites build in completely different ways and there is no shared package between them, so a copy is the honest option; the duplication is noted in both places.Verification
Built
docs/served locally and driven with a real browser, readingwindow.dataLayerwith Google's endpoints blocked: nothing fires on load, and all four depth marks fire on a full read.🤖 Generated with Claude Code