Change Details

Implement event logging for the Mobile Page Previews experiment (T418812) so we can measure the feature's impact and evaluate success criteria. === Context This is an A/B test delivered via the Test Kitchen framework. We need instrumentation to track the user funnel and support the experiment analysis. === Funnel events We probably want to capture the following events as they happen: - Link tap (qualifying link tapped, preview flow initiated) - Preview shown (bottom sheet opened with content visible) - Article opened (reader tapped "Open article" to navigate) - Preview dismissed (reader closed the sheet without navigating — via X, outside tap, or back button) Additional signals to consider: - Time spent viewing the preview before action (open or dismiss) - Whether the previewed article had an image or not - API latency (time from tap to content rendered) - API errors (request failed or timed out) Other things we need to capture?

Implement event logging for the Mobile Page Previews experiment (T418812) so we can measure the feature's impact and evaluate success criteria. Note: we also need to write the spec and then code the implementation against the spec === Context This is an A/B test delivered via the Test Kitchen framework. We need instrumentation to track the user funnel and support the experiment analysis. === Funnel events We probably want to capture the following events as they happen: - Link tap (qualifying link tapped, preview flow initiated) - Preview shown (bottom sheet opened with content visible) - Article opened (reader tapped "Open article" to navigate) - Preview dismissed (reader closed the sheet without navigating — via X, outside tap, or back button) Additional signals to consider: - Time spent viewing the preview before action (open or dismiss) - Whether the previewed article had an image or not - API latency (time from tap to content rendered) - API errors (request failed or timed out) Other things we need to capture? -link clicks in the control group (click throughs to the target page) -Jennifer's green light -do gud dezign

Implement event logging for the Mobile Page Previews experiment (T418812) so we can measure the feature's impact and evaluate success criteria. Note: we also need to write the spec and then code the implementation against the spec === Context This is an A/B test delivered via the Test Kitchen framework. We need instrumentation to track the user funnel and support the experiment analysis. === Funnel events We probably want to capture the following events as they happen: - Link tap (qualifying link tapped, preview flow initiated) - Preview shown (bottom sheet opened with content visible) - Article opened (reader tapped "Open article" to navigate) - Preview dismissed (reader closed the sheet without navigating — via X, outside tap, or back button) Additional signals to consider: - Time spent viewing the preview before action (open or dismiss) - Whether the previewed article had an image or not - API latency (time from tap to content rendered) - API errors (request failed or timed out) Other things we need to capture? -link clicks in the control group (click throughs to the target page) -Jennifer's green light -do gud dezign