Add Protection Report Generator with HTML/PDF output and scheduled delivery (FRE-4575)

- Report service: data collection from all three engines, HTML rendering (Handlebars), PDF generation (pdfkit)
- REST API: /reports endpoints for generate, history, view, PDF download, scheduling
- BullMQ workers: queued report generation with retry, monthly/annual scheduler triggers
- DB: SecurityReport model with Prisma schema and type exports
- Email: report_ready template in shared-notifications
- All dependencies wired through existing packages

Co-Authored-By: Paperclip <noreply@paperclip.ing>

packages/report/src/index.ts

@@ -0,0 +1,4 @@
+export { ReportService, reportService } from './report.service';
+export { collectAllReportData, collectExposureSummary, collectSpamStats, collectVoiceStats, collectHomeTitleStats, generateRecommendations, calculateProtectionScore } from './data-collector';
+export { HtmlRenderer, htmlRenderer } from './html-renderer';
+export { PdfGenerator, pdfGenerator } from './pdf-generator';