feat: implement security report generation backend (task 21)

- Add report-schedules DB schema table
- Create reports tRPC router with getReports, generateReport, getReport,
  deleteReport, getScheduledReports, updateSchedule procedures
- Create reports service with async report generation lifecycle
- Create report generator (compileData, renderHTML, generatePDF, uploadPDF)
- Add HTML templates for monthly-plus, annual-premium, weekly-digest
- Add Valibot schemas for input validation
- Wire router into root.ts and update DB schema exports/relations
- Install puppeteer for HTML-to-PDF conversion
- Write unit tests for router (11 tests) and service (12 tests)

web/src/server/db/schema/index.ts

@@ -13,4 +13,5 @@ export * from "./hometitle";
 export * from "./removebrokers";
 export * from "./invitation";
 export * from "./notifications";
+export * from "./report-schedules";
 export * from "./relations";