User Story:
As part of the WMF Contributors Growth, I need Key Result metrics to be available and compatible in GrowthBook so that planned experiments can use them to measure outcomes.

Related: T424695: DE1.3 - Editor second-week retention

Description:

All DE (Deepen Engagement) Key Results have a defined metric, but those metrics aren't yet defined in GrowthBook or aren't compatible with event-based architecture. This task tracks the work needed to make the KR metrics usable as an experiment metric in GrowthBook.
This is an enabler task, sequenced ahead of the experiments that depend on it.

• KR: DE1.3 - https://www.mediawiki.org/wiki/Personal_Dashboard
• Metric: Editor second-week retention
• Hypothesis: By the end of Q2, achieve at least a 12% relative increase in second-week retention for editors who are presented with interventions focused on editor progression through controlled experiments, compared to editors in the control group.

Acceptance Criteria:

• Editor second-week retention available in GrowthBook

Timeline: ideally we have this metric available in GrowthBook by the end of August, 2026.