Review discount analytics

Primary path

1. Open Discounts (/dashboard/discounts), then Analytics (/dashboard/discounts/analytics).
2. Review Bar, Line, and Pie charts by type and month plus the Top discounts table by redemption amount.
3. Pick a 7, 30, 90, or 365-day range and a single discount to compare.
4. From the discount row click View Analytics or open /dashboard/discounts/[id]/analytics and review total redemptions, total amount, orders, per-order average, redemption rate, and last use.
5. Cross-check with /dashboard/orders/[id] via data.discounts[] lines and data.totals.discountTotal.

Documented notes

• Redemptions record on POST /api/orders/create, not at validation.
• The current handler reads tenant only and ignores range and discount.
• Export Report is not implemented; use Export CSV from the list.