Complete and enable statistics/analytics dashboard

[OlivierJM]

Feature Parity: Statistics & Analytics Dashboard

Legacy app has a comprehensive usage analytics dashboard. sparked-next has statistics commented out of the admin sidebar — this issue is to complete and enable it.

Legacy capabilities

• Platform-wide usage overview (page visits, resource views, active users)
• Per-user detailed statistics (what they viewed, when)
• User overview table with click-through to individual user stats
• Usage metrics and engagement trends
• Export data to CSV (see related issue)
• Track which resources are viewed most

Current state in sparked-next

• Dashboard home shows aggregate counts (page_views, searches) via stats API
• page_views collection records view counts per media item (via 45-second view tracking)
• searches collection partially tracked
• Statistics admin section is commented out of navigation

Acceptance criteria

• Statistics admin section re-enabled in navigation
• /admin/statistics page with platform-wide overview
• Per-user activity breakdown (which resources each user viewed)
• Most-viewed content list
• Search term analytics (what users search for)
• Date range filtering for statistics
• CSV export of statistics data (see separate issue)

Identified via feature-parity audit against legacy Sparked (Meteor) app.