Observer dashboard extraction, PDF reports, jury UX overhaul, and miscellaneous improvements

- Extract observer dashboard to client component, add PDF export button
- Add PDF report generator with jsPDF for analytics reports
- Overhaul jury evaluation page with improved layout and UX
- Add new analytics endpoints for observer/admin reports
- Improve round creation/edit forms with better settings
- Fix filtering rules page, CSV export dialog, notification bell
- Update auth, prisma schema, and various type fixes

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

package.json

@@ -61,6 +61,9 @@
     "clsx": "^2.1.1",
     "cmdk": "^1.0.4",
     "date-fns": "^4.1.0",
+    "html2canvas": "^1.4.1",
+    "jspdf": "^4.1.0",
+    "jspdf-autotable": "^5.0.7",
     "leaflet": "^1.9.4",
     "lucide-react": "^0.563.0",
     "minio": "^8.0.2",