Each tab now has an Export CSV button that downloads the currently
displayed data as a CSV file, respecting the active time filter.
Exports: usage-over-time, top-users, top-models, top-agents.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Express.js + Chart.js dashboard for LibreChat usage analytics.
Queries MongoDB transactions collection for model/agent usage, costs, and top users.
Dark theme with Montserrat font, black/gold (#FFC407) color scheme.
Docker-ready with API key authentication.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
