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>

src/components/forms/round-type-settings.tsx

@@ -213,17 +213,17 @@ function FilteringSettings({
                 <Input
                   id="minReviews"
                   type="number"
-                  min="1"
+                  min="0"
                   value={settings.autoEliminationMinReviews}
                   onChange={(e) =>
                     onChange({
                       ...settings,
-                      autoEliminationMinReviews: parseInt(e.target.value) || 1,
+                      autoEliminationMinReviews: parseInt(e.target.value) || 0,
                     })
                   }
                 />
                 <p className="text-xs text-muted-foreground">
-                  Min reviews before auto-elimination applies
+                  Min reviews before auto-elimination applies (0 for AI-only filtering)
                 </p>
               </div>
             </div>