Multi-role members, round detail UI overhaul, dashboard jury progress, and submit bug fix

- Add roles UserRole[] to User model with migration + backfill from existing role column
- Update auth JWT/session to propagate roles array with [role] fallback for stale tokens
- Update tRPC hasRole() middleware and add userHasRole() helper for inline role checks
- Update ~15 router inline checks and ~13 DB queries to use roles array
- Add updateRoles admin mutation with SUPER_ADMIN guard and priority-based primary role
- Add role switcher UI in admin sidebar and role-nav for multi-role users
- Remove redundant stats cards from round detail, add window dates to header banner
- Merge Members section into JuryProgressTable with inline cap editor and remove buttons
- Reorder round detail assignments tab: Progress > Score Dist > Assignments > Coverage > Jury Group
- Make score distribution fill full vertical height, reassignment history always open
- Add per-juror progress bars to admin dashboard ActiveRoundPanel for EVALUATION rounds
- Fix evaluation submit bug: use isSubmitting state instead of startMutation.isPending

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

src/server/routers/project.ts

@@ -2,7 +2,7 @@ import crypto from 'crypto'
 import { z } from 'zod'
 import { TRPCError } from '@trpc/server'
 import { Prisma } from '@prisma/client'
-import { router, protectedProcedure, adminProcedure } from '../trpc'
+import { router, protectedProcedure, adminProcedure, userHasRole } from '../trpc'
 import { getUserAvatarUrl } from '../utils/avatar-url'
 import {
   notifyProjectTeam,
@@ -133,7 +133,7 @@ export const projectRouter = router({
       }
 
       // Jury members can only see assigned projects
-      if (ctx.user.role === 'JURY_MEMBER') {
+      if (userHasRole(ctx.user, 'JURY_MEMBER')) {
         where.assignments = {
           ...((where.assignments as Record<string, unknown>) || {}),
           some: { userId: ctx.user.id },
@@ -428,7 +428,7 @@ export const projectRouter = router({
       }
 
       // Check access for jury members
-      if (ctx.user.role === 'JURY_MEMBER') {
+      if (userHasRole(ctx.user, 'JURY_MEMBER')) {
         const assignment = await ctx.prisma.assignment.findFirst({
           where: {
             projectId: input.id,