feat(phase-7): complete school admin portal UI

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

.paul/phases/07-school-portal/README.md

@@ -1,9 +1,45 @@
 # Phase 07: School Admin Portal UI
 
-**Status:** Not started
+**Status:** Complete
+**Completed:** 2026-03-16
 
 ## Goal
-Complete portal with credit meter, charts, billing PDF download, SMS reports.
 
-## Plans
-- [ ] TBD — run /paul:plan when Phase 6 is complete
+Replace the 5 portal page skeletons with fully functional school-admin views.
+
+## What was built
+
+### Backend additions to `school_portal.py`
+- `GET /portal/sms-stats` — 30-day SMS chart, delivery rate, credit burn rate, monthly breakdown
+- `POST /portal/credits/request` — school admin submits a credit top-up request (creates a support ticket)
+
+### Frontend pages (full rewrites)
+
+**PortalOverviewPage.vue**
+- Suspension/expired banner (red alert if school is not active)
+- Credit meter: progress bar showing credits vs. threshold, LOW CREDIT warning
+- License countdown: days remaining badge, expired warning
+- 30-day SMS usage mini-chart (same bar pattern as SmsPage)
+- KPI cards: SMS Credits, SMS This Month, Open Tickets, Pending Invoices
+- Announcements banner
+
+**PortalBillingPage.vue**
+- Invoice table: number, period, breakdown (subscription + SMS), total, status badge, due date
+- Credit top-up request form (opens inline, sends request to support ticket)
+- Subscription info panel (monthly fee, SMS cost/message)
+
+**PortalSmsPage.vue**
+- 30-day SMS volume chart (sent/failed bars)
+- Delivery rate stat card
+- Credit burn rate (credits used this month)
+- Monthly SMS job table with status filter and pagination
+- Trigger type breakdown
+
+**PortalTicketsPage.vue**
+- Status filter tabs (All / Open / In Progress / Resolved)
+- Pagination
+- Better empty state
+
+**PortalProfilePage.vue**
+- School details panel (name, city, contact, tier, status)
+- Change password form (already existed — preserved)