Jury UX: fix COI modal, add sliders, redesign stats, gate evaluations

- Switch COI dialog from Dialog to AlertDialog (non-dismissible)
- Replace number inputs with sliders + rating buttons for criteria/global scores
- Redesign jury dashboard stat cards: compact strip on mobile, editorial grid on desktop
- Remove ROUND_ACTIVE filter from myAssignments so all assignments show
- Block evaluate page when round is inactive or voting window is closed
- Gate evaluate button on project detail page based on voting window status

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

src/server/routers/assignment.ts

@@ -253,7 +253,6 @@ export const assignmentRouter = router({
     .query(async ({ ctx, input }) => {
       const where: Record<string, unknown> = {
         userId: ctx.user.id,
-        round: { status: 'ROUND_ACTIVE' },
       }
 
       if (input.roundId) {