Wire the Phase 7 analytics API endpoints into the store analytics
page with interactive visualizations:
- Revenue chart (Chart.js bar+line combo): monthly points earned as
bars + active customers as line overlay with dual Y axes.
- At-risk members panel: ranked list of churning cards showing
customer name and days inactive, with count badge.
- Cohort retention table: enrollment month rows × M0-M5 retention
columns with color-coded percentage cells (green >60%, yellow
>30%, red <30%).
Chart.js loaded on-demand via existing CDN loader with local fallback.
Data fetched in parallel via Promise.all for the 3 analytics endpoints.
All sections gracefully degrade to "not enough data" message when empty.
7 new i18n keys (EN only — FR/DE/LB translations to be added).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Samir Boulahtit
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