feat(phases-10-15): complete TapTrack Hub v1.0

Phase 10 — Support Ticket System:
- tickets.py router: SLA status (on_track/at_risk/breached/responded), email
  notifications on create+reply via background threads, school_name in list,
  priority filter, bulk-close endpoint
- tasks/tickets.py: escalate_stale Celery task (48h→high, 72h no reply→urgent)
- worker.py: escalate_stale scheduled every hour
- templates/email/ticket_notification.html: HTML ticket notification email
- TicketsPage.vue: status tabs, SLA badge, priority badge, school name column,
  checkbox bulk-close, pagination
- TicketDetailPage.vue: inline priority/status/assignee selectors, SLA timer,
  internal note lock icon, closed-ticket guard

Phase 11 — Monthly Report Generation:
- models/report.py: MonthlyReport + SchoolMonthlyStats ORM models
- tasks/reports.py: send_monthly_reports enhanced with SMS stats, attendance
  data, invoice summary, stores MonthlyReport record per school per month

Phase 12 — On-Prem Monthly Report Pull:
- tasks/reports.py: pull_monthly_stats task — httpx GET to each school's
  hub_base_url, upserts SchoolMonthlyStats; runs 1st at 5am
- worker.py: pull_monthly_stats scheduled 1st at 5am

Phase 13 — Feature Flags + Suspension:
- models/school.py: hub_base_url, feature_overrides (JSON), onboarding_completed_at
- routers/schools.py: PUT /{id}/feature-overrides endpoint
- routers/sync.py: _tier_features() merges school.feature_overrides into poll config

Phase 14 — Onboarding Wizard + Welcome Email:
- tasks/onboarding.py: send_welcome_email Celery task with license key
- routers/schools.py: auto-trigger welcome email on POST /schools,
  POST /{id}/activate (status→active + onboarding_completed_at),
  POST /{id}/resend-welcome

Phase 15 — UX Polish + Ops Tools:
- routers/search.py: GET /api/search?q= (schools + invoices + tickets, 5 each)
- routers/audit.py: GET /api/audit-logs (paginated, filterable)
- AppLayout.vue: global search bar with debounced dropdown, result navigation
- AuditLogsPage.vue: new page with filter + pagination
- AppSidebar.vue: Audit Logs nav item added
- router/index.ts: /audit-logs route
- api.ts: globalSearch, getAuditLogs, activateSchool, resendWelcomeEmail,
  updateFeatureOverrides, bulkCloseTickets

Deployment:
- docker-compose.yml: x-backend-env anchor (DRY), PDF_DIR env var,
  seed service (one-shot python seed.py on first boot)
- migrations/003_phases11_15.py: monthly_reports, school_monthly_stats tables
  + schools hub_base_url/feature_overrides/onboarding_completed_at columns

backend/app/tasks/reports.py

@@ -1,35 +1,196 @@
-"""Celery task: send monthly reports to schools."""
+"""Celery tasks: monthly report generation and on-prem data pull."""
 import logging
+from datetime import datetime, timezone, timedelta, date
+
 from app.worker import celery_app
 
 logger = logging.getLogger(__name__)
 
-@celery_app.task(name="reports.send_monthly_reports")
-def send_monthly_reports():
-    """Send monthly attendance and SMS report email to each active school."""
-    import os
-    from datetime import date, timedelta
-    from sqlalchemy import create_engine, select
-    from sqlalchemy.orm import sessionmaker
-    from app.models.school import School, SchoolStatus
-    from app.services.email import send_email
 
+def _make_session():
+    import os
+    from sqlalchemy import create_engine
+    from sqlalchemy.orm import sessionmaker
     db_url = os.getenv("DATABASE_URL", "postgresql://postgres:postgres@db:5432/taptrack_hub")
     engine = create_engine(db_url.replace("postgresql+asyncpg://", "postgresql://"), pool_pre_ping=True)
-    db = sessionmaker(bind=engine)()
+    return sessionmaker(bind=engine)()
+
+
+@celery_app.task(name="reports.pull_monthly_stats")
+def pull_monthly_stats():
+    """
+    Pull attendance stats from each on-prem TapTrack instance.
+    Runs 1st of month at 5am, before report generation at 7am.
+    """
+    import httpx
+    from sqlalchemy import select
+    from app.models.school import School, SchoolStatus
+    from app.models.license import License
+    from app.models.report import SchoolMonthlyStats
+
+    db = _make_session()
     try:
         today = date.today()
-        prev_month_end = date(today.year, today.month, 1) - timedelta(days=1)
-        prev_month_start = date(prev_month_end.year, prev_month_end.month, 1)
+        prev_end = date(today.year, today.month, 1) - timedelta(days=1)
+        report_month = f"{prev_end.year}-{prev_end.month:02d}"
+
         schools = db.execute(select(School).where(School.status == SchoolStatus.active)).scalars().all()
+        for school in schools:
+            lic = db.execute(select(License).where(License.school_id == school.id)).scalar_one_or_none()
+            hub_url = getattr(school, 'hub_base_url', None)
+
+            existing = db.execute(
+                select(SchoolMonthlyStats).where(
+                    SchoolMonthlyStats.school_id == school.id,
+                    SchoolMonthlyStats.report_month == report_month,
+                )
+            ).scalar_one_or_none()
+            stats = existing or SchoolMonthlyStats(school_id=school.id, report_month=report_month)
+
+            if hub_url and lic:
+                try:
+                    resp = httpx.get(
+                        f"{hub_url.rstrip('/')}/api/hub/monthly-report",
+                        params={"key": lic.key, "month": report_month},
+                        timeout=10,
+                    )
+                    if resp.status_code == 200:
+                        data = resp.json()
+                        stats.total_students = data.get("total_students")
+                        stats.school_days = data.get("school_days")
+                        stats.present_days_total = data.get("present_days_total")
+                        stats.absent_days_total = data.get("absent_days_total")
+                        stats.late_days_total = data.get("late_days_total")
+                        stats.avg_attendance_rate = data.get("avg_attendance_rate")
+                        stats.sms_sent = data.get("sms_sent")
+                        stats.pull_status = "success"
+                        stats.pulled_at = datetime.now(timezone.utc)
+                        stats.hub_base_url = hub_url
+                    else:
+                        stats.pull_status = "failed"
+                except Exception as e:
+                    logger.warning("Failed to pull stats for %s: %s", school.name, e)
+                    stats.pull_status = "failed"
+            else:
+                stats.pull_status = "unavailable"
+
+            if not existing:
+                db.add(stats)
+
+        db.commit()
+        logger.info("pull_monthly_stats complete for %s", report_month)
+    except Exception as e:
+        db.rollback()
+        logger.error("pull_monthly_stats error: %s", e)
+    finally:
+        db.close()
+
+
+@celery_app.task(name="reports.send_monthly_reports")
+def send_monthly_reports():
+    """Send monthly report emails to all active schools on the 1st at 7am."""
+    from sqlalchemy import select, func
+    from app.models.school import School, SchoolStatus
+    from app.models.sms import SmsJob, SmsJobStatus
+    from app.models.billing import Invoice
+    from app.models.report import MonthlyReport, SchoolMonthlyStats
+    from app.services.email import send_email
+
+    db = _make_session()
+    try:
+        today = date.today()
+        prev_end = date(today.year, today.month, 1) - timedelta(days=1)
+        prev_start = date(prev_end.year, prev_end.month, 1)
+        report_month = f"{prev_end.year}-{prev_end.month:02d}"
+        month_label = prev_start.strftime("%B %Y")
+
+        schools = db.execute(select(School).where(School.status == SchoolStatus.active)).scalars().all()
+        sent = 0
+
         for school in schools:
             if not school.billing_email:
                 continue
-            send_email(
-                to=school.billing_email,
-                subject=f"Monthly Report — {school.name} — {prev_month_start.strftime('%B %Y')}",
-                body=f"Dear {school.contact_name or school.name},\n\nPlease find your monthly summary for {prev_month_start.strftime('%B %Y')} in your TapTrack Hub portal.\n\nSMS Credits Remaining: {float(school.sms_credits):.0f}\n\nLog in to view full details.\n\nThank you,\nTapTrack Hub Team",
+
+            sms_sent_count = db.execute(
+                select(func.count()).where(
+                    SmsJob.school_id == school.id, SmsJob.status == SmsJobStatus.sent,
+                    func.date(SmsJob.sent_at) >= prev_start, func.date(SmsJob.sent_at) <= prev_end,
+                )
+            ).scalar_one()
+            sms_failed_count = db.execute(
+                select(func.count()).where(
+                    SmsJob.school_id == school.id, SmsJob.status == SmsJobStatus.failed,
+                    func.date(SmsJob.created_at) >= prev_start, func.date(SmsJob.created_at) <= prev_end,
+                )
+            ).scalar_one()
+
+            inv = db.execute(
+                select(Invoice).where(Invoice.school_id == school.id, Invoice.billing_period_start == prev_start)
+            ).scalar_one_or_none()
+
+            att = db.execute(
+                select(SchoolMonthlyStats).where(
+                    SchoolMonthlyStats.school_id == school.id,
+                    SchoolMonthlyStats.report_month == report_month,
+                )
+            ).scalar_one_or_none()
+
+            report_data = {
+                "month": month_label, "sms_sent": sms_sent_count, "sms_failed": sms_failed_count,
+                "credits_remaining": float(school.sms_credits),
+                "attendance": {
+                    "available": att is not None and att.pull_status == "success",
+                    "total_students": att.total_students if att else None,
+                    "school_days": att.school_days if att else None,
+                    "avg_attendance_rate": float(att.avg_attendance_rate) if att and att.avg_attendance_rate else None,
+                },
+                "invoice": {"number": inv.invoice_number, "total": float(inv.total_amount), "status": inv.status.value} if inv else None,
+            }
+
+            existing_report = db.execute(
+                select(MonthlyReport).where(
+                    MonthlyReport.school_id == school.id, MonthlyReport.report_month == report_month,
+                )
+            ).scalar_one_or_none()
+
+            if not existing_report:
+                report = MonthlyReport(school_id=school.id, report_month=report_month, report_data=report_data)
+                db.add(report)
+                db.flush()
+            else:
+                report = existing_report
+                report.report_data = report_data
+
+            att_section = ""
+            if report_data["attendance"]["available"]:
+                att_section = (f"\nAttendance Rate: {report_data['attendance']['avg_attendance_rate']:.1f}%"
+                               f" | School Days: {report_data['attendance']['school_days']}"
+                               f" | Students: {report_data['attendance']['total_students']}")
+
+            plain = (
+                f"Dear {school.contact_name or school.name},\n\n"
+                f"Monthly summary for {month_label}:\n\n"
+                f"SMS Sent: {sms_sent_count} | Failed: {sms_failed_count}\n"
+                f"SMS Credits Remaining: {float(school.sms_credits):.0f}\n"
+                f"{att_section}\n\n"
+                f"Log in to view full details.\n\nTapTrack Hub Team"
             )
-        logger.info(f"Sent monthly reports to {len(schools)} schools")
+
+            ok = send_email(
+                to=school.billing_email,
+                subject=f"Monthly Report — {school.name} — {month_label}",
+                body=plain,
+                email_type="monthly_report",
+                school_id=school.id,
+            )
+            if ok:
+                report.email_sent_at = datetime.now(timezone.utc)
+                sent += 1
+
+        db.commit()
+        logger.info("send_monthly_reports: %d/%d sent", sent, len(schools))
+    except Exception as e:
+        db.rollback()
+        logger.error("send_monthly_reports error: %s", e)
     finally:
         db.close()