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/STATE.md

@@ -3,16 +3,16 @@
 ## Current Position
 
 Milestone: v1.0 — Foundation & Core Services
-Phase: 6 of 15 (Super Admin Dashboard UI — complete)
-Plan: Phase 6 complete — Phase 7 next
-Status: **Phase 6 applied — ready to begin Phase 7**
-Last activity: 2026-03-16 — Phase 6 complete (rich dashboard: KPI row, SMS volume chart, revenue snapshot, school health table with sort/filter, quick actions, refresh button)
+Phase: 7 of 15 (School Admin Portal UI — complete)
+Plan: Phase 7 complete — Phase 8 next
+Status: **Phase 7 applied — ready to begin Phase 8**
+Last activity: 2026-03-16 — Phase 7 complete (portal pages: suspension banner, credit meter, license countdown, SMS chart, delivery stats, top-up request form, ticket filter/pagination, school details)
 
 ## Loop Position
 
 ```
 PLAN ──▶ APPLY ──▶ UNIFY
-  ·        ·        ·     [No active plan — Phase 7 planning next]
+  ·        ·        ·     [No active plan — Phase 8 planning next]
 ```
 
 ## Progress
@@ -25,7 +25,7 @@ PLAN ──▶ APPLY ──▶ UNIFY
 - Phase 4  (SMS Gateway):                    [██████████] 100% ✓
 - Phase 5  (On-Prem SMS Polling Agent):      [██████████] 100% ✓
 - Phase 6  (Super Admin Dashboard UI):       [██████████] 100% ✓
-- Phase 7  (School Admin Portal UI):         [░░░░░░░░░░]   0%
+- Phase 7  (School Admin Portal UI):         [██████████] 100% ✓
 - Phase 8  (Billing Engine + Invoice PDF):   [░░░░░░░░░░]   0%
 - Phase 9  (Email Dispatcher):               [░░░░░░░░░░]   0%
 - Phase 10 (Support Ticket System):          [░░░░░░░░░░]   0%
@@ -37,8 +37,8 @@ PLAN ──▶ APPLY ──▶ UNIFY
 
 ## Next Action
 
-Run: `/paul:plan` for Phase 7 — School Admin Portal UI
-Resume file: .paul/ROADMAP.md → Phase 7
+Run: `/paul:plan` for Phase 8 — Billing Engine + Invoice PDF
+Resume file: .paul/ROADMAP.md → Phase 8
 
 ## Repo