e45e63903d
Backend (school_portal.py): - GET /portal/sms-stats: 30/7/90-day chart, delivery rate, credit burn this month - POST /portal/credits/request: auto-creates billing ticket for credit top-up - GET /portal/overview: extended with days_left, sms_credit_low flag, 30-day SMS chart, full school details PortalOverviewPage: suspension/expired banner, low-credit warning, credit meter with progress bar, license countdown with expiry badge, 30-day SMS sparkline PortalBillingPage: subscription plan panel (fee, SMS cost, cycle, next billing), invoice table with subscription/SMS breakdown, credit top-up request form PortalSmsPage: 30/7/90d period picker, 4-stat KPI row (sent, failed, delivery rate, credit burn), daily volume chart, credit snapshot with top-up link, paginated SMS log with status filter PortalTicketsPage: status filter tabs (all/open/in-progress/resolved/closed), pagination, improved empty states PortalProfilePage: school details panel (name, city, contact, tier, status) alongside existing change-password form