feat(phase-1): TapTrack Hub initial scaffold

Full project scaffold for TapTrack Hub — cloud SaaS control plane
for managing on-prem TapTrack school deployments.

## Infrastructure
- Docker Compose: backend (gunicorn+uvicorn), Celery worker + beat,
  frontend (Vite build + nginx), PostgreSQL 15, Redis 7, nginx proxy
- Dockerfile for backend and frontend, nginx reverse proxy config

## Backend (FastAPI + SQLAlchemy async + Celery)
Database schema (10 tables):
  hub_users, schools, licenses, sms_jobs, sms_credit_ledger,
  invoices, invoice_line_items, school_subscriptions,
  support_tickets, ticket_replies, audit_logs, announcements

Auth: JWT (python-jose) + bcrypt + role-based FastAPI dependencies
  (get_current_user, require_super_admin, require_school_admin)

Routers (11): auth, schools, licenses, sms, billing, tickets,
  users, dashboard, school_portal, announcements, sync

Celery tasks (6):
  sms.process_queue, billing.generate_monthly_invoices,
  billing.send_invoice_email, billing.check_overdue,
  license.check_expiry, reports.send_monthly_reports

Services: SMTP email helper (smtplib + Jinja2)
Seed script: creates super admin admin@taptrack.io

## Frontend (Vue 3 + Vite + Pinia + Tailwind CSS)
Router: 14 routes across super admin + school portal layouts
Stores: Pinia auth store with localStorage persistence
API client: full axios client for all backend endpoints
Layouts: AppLayout (super admin), PortalLayout (school), AuthLayout
Components: AppSidebar, PortalSidebar, SidebarItem, KpiCard,
  StatusBadge, ToastStack
Pages: Login, Dashboard, Schools, SchoolDetail, Licenses, SMS,
  Billing, Tickets, TicketDetail, Users, Announcements, 404
Portal pages: Overview, Billing, SMS Reports, Tickets, Profile

## PAUL Planning Files
- .paul/ROADMAP.md: full 15-phase roadmap with detailed scope
- .paul/STATE.md: current position, tech stack, architecture notes
- .paul/phases/01-setup/01-PLAN.md: complete Phase 1 plan (done)
- .paul/phases/02 through 15: README stubs for all future phases

backend/app/services/email.py

@@ -0,0 +1,32 @@
+"""Simple SMTP email service."""
+import smtplib
+import logging
+from email.mime.text import MIMEText
+from email.mime.multipart import MIMEMultipart
+from app.config import settings
+
+logger = logging.getLogger(__name__)
+
+def send_email(to: str, subject: str, body: str, html: str | None = None) -> bool:
+    """Send email via configured SMTP. Returns True on success."""
+    if not settings.SMTP_HOST:
+        logger.warning(f"SMTP not configured — would send to {to}: {subject}")
+        return False
+    try:
+        msg = MIMEMultipart("alternative")
+        msg["Subject"] = subject
+        msg["From"] = settings.SMTP_FROM
+        msg["To"] = to
+        msg.attach(MIMEText(body, "plain"))
+        if html:
+            msg.attach(MIMEText(html, "html"))
+        with smtplib.SMTP(settings.SMTP_HOST, settings.SMTP_PORT) as smtp:
+            smtp.starttls()
+            if settings.SMTP_USER:
+                smtp.login(settings.SMTP_USER, settings.SMTP_PASSWORD)
+            smtp.sendmail(settings.SMTP_FROM, [to], msg.as_string())
+        logger.info(f"Email sent to {to}: {subject}")
+        return True
+    except Exception as e:
+        logger.error(f"Email failed to {to}: {e}")
+        return False